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CIS Training Manual – Gx Version

1. You can take multiple photographs at a test site by repeating the process outlined above For example the Picture screen shown below shows two renamed images 40 Pictures Gx Data logger So gt fe D 12 53 Pm If you would like to adjust the camera settings from their default settings you can do so via the Settings button on the Pictures screen For example you can change the size and resolution of the image to be captured the lighting conditions under which the image will be captured and the focusing method to be used for example By tapping on the settings button the screen shown below will be displayed 41 eyeSEEsetup gx_ss_image File Options Help Save File Viewfinda 4f gt Image Format Lighting ISxGA 1280x960 Daylight Focus Mode a Ej Near Limit Auto v so En Far Limit POLE As indicated on the above screen there are a number of page tabs labeled Camera Accessories Save etc For information on the selections available via the various tabs please see Appendix 3 Camera Settings of the Gx Pipeline Survey Data logger User s Manual Note For the default picture size SXGA 1280x960 the Flash light is not available However you can turn on the LED Lamp which is turned OFF by default if direct light is required You can do so via the Accessories tab on the above screen Also please note that the Flash light is available for the l
2. 52 Waveform SystemCF GX_Data wfm1 wfm Bal 5 7 DC 400 MOhm Single 1 169 0 00 1 00 Sec hak oeei Waveprints are very useful with regard to confirming switching synchronization of current interrupters for example and with regard to checking for On to Off and Off to On transition spikes Settings By tapping on the Settings button on the Waveform screen the screen shown below will be displayed depending on the previous settings 53 Waveform Settings Voltage Range 5 7 DC 400 MOhm Display Mode Single x Waveform Time s fid Baj PST roe Since all of the DC channels on the Gx data logger are fast response channels you can select any Voltage Range setting amongst the DC options regardless of the interruption cycle rate The main issue with regard to optimum Range selection is sensitivity in terms of the magnitude of the voltages being measured You can also change the Display Mode selection by tapping on the menu button in the Display Mode field In the case of the Single reading mode option you can select the number of waveform periods to be displayed viewable via the horizontal scroll bar by tapping inside the Waveform Time box and entering a value manually for number of seconds For example if the interruption cycle period is 5 seconds 4 seconds On 1 second Off and you entered 10 seconds you would have 2 waveform cycles displayed S
3. Answering No on the above screen will return you directly to the Survey screen 76 Since in our example section of pipe the valve represents the end of the line segment you would terminate the survey by tapping on Survey at the top of the screen and tapping on Finish Survey Tap again on Survey and this time select Exit to close the pipeline survey program At this point you have completed the CIS on this section of the pipeline and the survey data have been stored saved on the data logger s Flash memory card in the file that you named when you setup the survey SECTION V HOW TO COPY SURVEY FILES FROM THE DATA LOGGER TO YOUR PC V 1 Introduction Survey data are stored in independent files one file for each survey on the Flash memory card on the Gx data logger and you can copy survey files to your PC using one of two approaches manually or via the driver in the ProActive software program The ProActive software program represents MCM s CP data management system and this program allows integration of pipeline survey data in a database system and offers extensive reporting both textual and graphical capabilities on the survey data If you have the ProActive software program installed on your PC or you can bring your Gx to a PC that has ProActive installed on it you can use the ProActive program to automatically access survey files on the Gx If either of these situations applies you would
4. Note Several seconds are required to open and close the camera program The Pictures screen shown below will be displayed Pictures No Pictures SADE 1141 am To take a photograph tap on the Take Pict button The camera will go through a focusing process and you will see a Ready to Take indication at the top of the screen when you can take a picture as indicated below 37 At this point press and release the camera button located at the top right hand corner of the keypad You will have the choice of saving the picture or deleting it as indicated by the 4 to Save 1 to Delete indication on the screen below To save the picture press and release the 4 key 38 An example of a saved image is shown below on the Picture screen Pictures 07_13_201008_27_01 Sae SUG awe As indicated in the above screen the image is given a filename by default which represents the date time stamp for the image The above image for example was recorded on July 13 2010 at 8 27am You can rename the image if you prefer by highlighting the image tapping on the image and tapping on the Rename button You can then enter a new name for the image For example the image above has been renamed Office Desk on the screen shown below 39 Pictures e You can view a larger version of the image by highlighting the image tapping on the image and tapping on the View button
5. you can enter the name or number of the valve segment to be surveyed if known Starting Location very important Provide the Starting Location for the survey by tapping in the field labeled Starting Location and entering the location 24 You can select to have location information displayed on the survey screen as station number feet or milepost station number meters or kilometer post for the metric case Whichever selection you make here will determine how you enter your starting location information For example if your pipeline locations are represented by station numbers you would select Station Number from the menu list and you would enter a starting location for the survey in the form of a station number If you do not know the station number associated with the beginning your survey enter 0 0 0 Step 18 Tap on the Next button on the above screen A version of the screen shown below will be displayed depending on the current Date amp Time and also the filename entered for your survey Set up 4 of 5 Work Order Technician Name Comments f Description Survey Date 7 6 2010 15 27 23 Survey Name fisystemCF Gx_Datalrp4 rp4 mem tak eim E Work Order optional By tapping in the field labeled Work Order you can enter the work order number associated with the survey if known 25 Technician Name optional By tapping in the field labeled Techni
6. s Manual Note Several seconds are required to open the picture program How to Position the Camera for a Picture Since the camera on the Gx is located on the underside of the handheld unit it is necessary to remove the unit from its mounting platform by grasping the unit around its mid section and pulling in an upward motion The unit should snap out of its retaining brackets You can now position the camera to take your photograph since the coiled cable connecting the Gx to the dual probe adapter provides a considerable degree of flexibility The unit can then be snapped back into position on the platform after picture taking by lining up the groove on the bottom orange bumper with the registration post on the platform and pressing in a downward motion Note By tapping on the X button on the Pictures screen top right hand corner after taking a photograph you will be returned to the Survey screen Answering No on the above screen will return you directly to the Survey screen see below 12 station 94 97 5 4 26546 von Total Dist 997 5 Last Ref i 0 9365 voff a od rT poe T Redo GPS Status Standard GPS Cl RAUDNE As can be seen from the above screen the Gx data logger s software assumes that you are 2 5 feet short of the other side of the asphalt road The reason for this is that when you trigger your next reading you will be standing at the other side of the skip and at that point t
7. be 5 otherwise an error window will be displayed on the screen The error window will present 2 options Option 1 Retake Near Reading Option 2 Accept This Error 18 By selecting Option 1 you are given the opportunity to retake the Near Ground P S reading perhaps you need to re do the connection If the percentage difference is then below your threshold level there will be no error message By selecting Option 2 you will be choosing to ignore the difference in the readings and move on with the survey perhaps there is a significant current flowing in the pipe between the 2 test stations Step 13 Select Local Electricity AC Frequency By tapping on the menu button in the AC Cycle field on the screen shown above you will have the choice of 60Hz or 50Hz AC Select 60Hz for all U S applications This is an important select with regard to the AC filtering system that s applied to all of the DC voltage channels Step 14 Select the Beep if below value This gives you the opportunity to receive an alarm a beep sound if the reading is below an entered threshold level The entered value should be in volts and should be a negative value if you are measuring negative pipe to soil readings One option is to set a low threshold value for example 0 2 for 0 2 volts since any readings below this value say zero volts would be indicative of a trail wire break for example which is useful information If you not w
8. Reconnect Device will be displayed as shown below depending on previous settings Device Readings Reconnect Near Ground reading on 1 2546 v off 0 9365 v Reading Onjfofr DSP v Reading 5 7 VDC 400 MOhm v Bsa PATSA esa In this case you are being prompted to save the Near Ground readings after connecting the trail wire to the second test station TS2 68 After tapping on the Save button on the above screen you will be returned to the Survey screen assuming that the difference between the Far Ground and the Near Ground pipe to soil readings expressed as a percentage is smaller than the threshold percentage value that you entered for this parameter during the survey setup process If not you will be presented with an error screen that will indicate the actual percentage difference values and will give you the option to retake the Near Ground readings When the Reconnect device data are saved you will be given the opportunity to take a photograph at the Device location as indicated by the question displayed on the screen shown below Single Test Station Bsa SW 729 4 Answering Yes on the above screen will take you to the Pictures screen as described in Appendix 3 of the Gx Data logger Pipeline Survey User s Manual Note Several seconds are required to open the picture program How to Position the Camera for a Picture Since the camera on the Gx is located on t
9. be permitted to use invalid characters such as slashes or as part of a filename You will be alerted if you try to use any invalid characters Step 4 Once you have entered a filename tap the OK button on the above screen The screen shown below will be displayed The specific selections indicated on the screen will reflect the selections made for the previous survey Setup 1 0f 5 Survey Trigger CIS Rect Mode cycle ON OFF Cane Button s Allowed To D C P Survey Survey Locations Left Right Flag Read E DCYG Sidedrains in CIS Surveys E Use Metric estat fe Z O D 3 04 PM Step 5 Select the survey type by tapping on the menu button in the Survey Type field and highlighting the survey type of your choice Increasing Decreasing Setup 1 0f 5 Survey a 4 nad Mods Trigger CIS Cane Button incys D DCVGICIS None Surface Potential Save L DCYG Sidedrains in CIS Surveys B Use Metric Role SoBe 10 For Close Interval Potential Surveys there are 2 options for type of survey Trigger CIS and Continuous CIS Trigger CIS should be selected if you plan to either manually trigger readings using the push button data probes or you plan to use an automatic triggering cable in conjunction with a trail wire measure counter system Continuous CIS should be selected if you do not plan on either manually triggering rea
10. figure a 3 wire cable coiled black cable connects the hip pack or the back pack to the counter display unit Two of the wires carry the wire measure signal and the third wire connects to the structure pipe via the trail wire The structure can be connected to either the positive or the negative side of the data logger s voltmeter by connecting a banana plug cable from the counter unit to either the red or the black banana plug terminal on the data logger By connecting this cable to the red banana plug terminal positive side of the voltmeter and using two black band cables to connect the data probes to the data logger via the dual probe adapter effectively connecting the data probes to the negative side of the voltmeter you would read normally negative pipe to soil voltages This situation is illustrated in Figure 1 If you wanted to read normally positive pipe to soil voltages you 83 would connect the banana plug cable from the counter unit to the black banana plug terminal on the data logger and you would use two red band data probe cables Trail Wire 3 pin terminal mE Chainer Test Station Hip Pack or Back Pack Counter Display 3 pin terminal Optional External Beeper To Dual Probe Adapter Use Black Band p Cables With Trail Wire Connected as Shown erminal for negative pipe to soil readings Figure 1 Set up for manual triggering of
11. indicated by the question displayed on the screen shown below 58 Single Test Station woes DW 7294 Answering Yes on the above screen will take you to the Pictures screen as described in Appendix 3 of the Gx Data logger Pipeline Survey User s Manual Note Several seconds are required to open the picture program How to Position the Camera for a Picture Since the camera on the Gx is located on the underside of the handheld unit it is necessary to remove the unit from its mounting platform by grasping the unit around its mid section and pulling in an upward motion The unit should snap out of its retaining brackets You can now position the camera to take your photograph since the coiled cable connecting the Gx to the dual probe adapter provides a considerable degree of flexibility The unit can then be snapped back into position on the platform after picture taking by lining up the groove on the bottom orange bumper with the registration post on the platform and pressing in a downward motion Note By tapping on the X button on the Pictures screen top right hand corner after taking a photograph you will be returned to the Survey screen Answering No on the above screen will return you directly to the Survey screen You are now ready to proceed with the walking portion of the CIS 59 IV 4 How to Perform a CIS In order to illustrate some of the important processes associ
12. indicated on the screen shown below 62 oe 0 1 2546 von Total Dist Last Ref _ 0 9365 voff Geo Feat Device GPS Data Undo Flag GPS Status Standard GPS e start fe FADE i 8 29 am The Gx data logger s software program will add 2 5 feet in this example survey to the total distance from the starting station every time the right hand cane push button is pressed If you recall we also set things up so that when the left hand cane s push button is pressed triggered we would register the location of survey flags which are typically placed at 100 feet intervals down the length of the pipe In this case triggering the left hand cane would have the same effect as tapping on the Flag button on the Survey screen Consequently when you encounter your first survey flag and trigger the left hand cane the data logger s software will assume that you have traveled a distance of 100 feet from the starting test station At this point the screen will be displayed as shown below 63 MEE wet 0 mA 2546 YOn Total Dist HOOO 0 Last Ref vist 0 9365 voff GPS Data Undo Flag Dp Read GPS Status Standard GPS fale SUR nea Notice that the station number is now 1 00 0 The 1 represents 100 feet so the Gx assumes that you are now 100 feet from your reference zero location Notice also the F marker on the graph for Flag If you continue on down the pipe triggering
13. or CIS the details of which are discussed below I 3 CIS Overview With regard to Indirect Inspection of a buried pipeline one major technique that is employed is a close interval potential survey CIS which involves performing above the ground measurements of pipe to soil potential voltage along the entire length of the pipeline In a CIS it is critical that measurements be made in a highly consistent fashion from individual technician to individual technician and data pipe to soil potentials be recorded and analyzed in a consistent fashion in order that such data can be considered an integral part of an ECDA evaluation Close interval potential surveys are performed in order to obtain a continuous potential profile along the pipeline In the Cathodic Protection industry it is well known that pipe to soil potential measurements at test stations which are typically spaced a considerable distance apart are insufficient to judge the overall condition of a pipeline and to judge whether or not there is complete protection As a result close interval potential surveys involving the measurement of potentials at short intervals along the entire length of a pipeline have become the industry standard In fact with regard to the ECDA protocol pipe to soil potential readings are typically recorded at 2 5 feet intervals between test stations I 4 Key Components of a CIS Measurement System The diagram below Figure 1 illustrates
14. or kilometer post for the metric option 33 Survey Screen for the Trigger CIS Mode cod station Q 0 0 0 0524 On Total Dist sane mam 0 0520 vo Read GPS Status Differential GPS start fe Pom EE Survey Screen for the Continuous CIS Mode MEE stationf0 0 0 0 0529 vonr Total Dist ira mm 0 0531 vor Device a aes GPS Status Standard GPS sstart fe Pom E 34 You are now ready to perform a close interval survey using the Gx data logger and associated pipeline survey equipment I 2 Survey Options Menu including Picture Taking Option and Editing Option By tapping on the Survey Options button on the Survey screen the Survey Options menu will be displayed as indicated below Settings View Settings Ctrl S Voltmeter Ctrl M Wave Ctrl V Take Pictures Alt P Edit Survey Data Ctri E Delete Last Reading Ctrl D Add comments Ctr oO Restart Flags Alt F a aii Tapping on the down arrow on the above menu will reveal additional options as illustrated in the screen shown below 35 tile Voltmeter Ctrl4 M Wave Ctrl V Take Pictures Alt P Edit Survey Data Ctrl E Delete Last Reading Ctrl D Add Comments Ctrl O Restart Flags Alt F Set Graph Scale Alt Y Memory Monitor Ctri R e aii Settings Once you ve setup the Gx data logger for a particular pipeline survey you can make chan
15. readings using the right hand cane s push button until you encounter the next survey flag and you then press the left hand cane s push button switch to register this second survey flag the screen will appear as shown below 64 FEE we 0 1 2546 von Total Dist 2000 0 Last Ref alg 0 9365 voff Geo Feat Device t eA MAS NAS R Read GPS Status Standard GPS ia PEOBiesa In this case the station number is now 2 00 0 The 2 represents an assumed 200 feet from the reference zero location A second Flag marker also appears on the graph Reconnect Device Let s now assume that you encounter a second test station TS2 in the above figure at a distance of 40 feet from the second survey flag location and you need to do a reconnect of the trail wire at this location In this case when you encounter the test station you would tap on the Device button on the screen and tap on reconnect The screen at this point will appear as shown below 65 Device Readings a ST eo Optional By checking off the box labeled Device Name you can manually enter a descriptive name for the test station The name you enter here will be associated with this device as opposed to a default name Also by checking off the box labeled Known Location you have the opportunity to manually enter the actual stationing for the test station if known if it is different from the currently displa
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17. APTER The GPS Antenna illustrated on the top side of the Gx represents the antenna employed by the data logger s internal GPS receiver An extension antenna is recommended for pipeline survey work External GPS receiver units if employed would be connected to the data logger via its built in serial port Com 1 Port assuming that connection is made via a serial cable to the Gx With either the internal GPS receiver or an external GPS receiver being used the location of items such as flags devices and geo features can be recorded during the performance of a CIS either manually by tapping on the Log GPS button on the survey screen at each critical location or automatically by pre programming the data logger as described above in Section II 1 49 SECTION IV HOW TO PERFORM CLOSE INTERVAL POTENTIAL SURVEYS IV 1 How to Carry the Test Equipment During a CIS With the equipment connected as shown in Section III above and the Gx data logger setup as described in Section II you are ready to perform a close interval survey Gx Belt Pack Option MCM offers a special harness the Gx Belt Pack that allows the Gx and a trail wire Hip Pack to be carried around the waist area in a hands free fashion allowing the individual to be able to position the reference electrode data probes over the pipeline every 2 5 feet or so in an alternating manner and to be able to trigger readings manually using the push button swit
18. CIS Training Manual Gx Version MICMILLER co M C Miller Co Inc 11640 U S Highway 1 Sebastian FL 32958 MANUAL CONTENTS Page SECTIONI INTRODUCTION AND BACKGROUND L1 AIntiod cton cs 2440cea0s siasii vir annan EEE seeareed cantons 4 I 2 Background on ECDA Methodology and Role of CIS 4 3 COIS OVGCIMICW cscs anak nesai e EEE E EEE Ee EEEE 5 I 4 Key Components of a CIS Measurement System 6 SECTION II HOW TO SETUP THE DATA LOGGER FOR CIS II 1 Gx Data Logger Setup for CIS Applications 2 2 0 eeeeeeeees 7 II 2 Survey Options Menu including Picture Taking Options and Editing Options i538 oan mee tabane desu tcuniting addeledaanice sine sae Me 35 SECTION III TEST EQUIPMENT HOOK UPS FOR CIS HI 1 How to Make Cable Hook Ups for CIS Measurements 46 SECTION IV HOW TO PERFORM CLOSE INTERVAL POTENTIAL SURVEYS IV 1 How to Carry Test Equipment During a CIS 04 50 IV 2 How to View and Save a Pipe to Soil On Off Waveform 51 IV 3 How to Record the Pipe to Soil Potentials at a Starting Test Station aa e ea nara aaan a a a E as 56 IV 4 How to Performa CIS ocsssnssincaiasvce eaa a sta A a E S 60 Continued Over SECTION V HOW TO COPY SURVEY FILES FROM THE Gx TO YOUR PC VoL Tntiod ct n seirer case etree dee iecdaaaeadeessverewiaae ged deren tes V 2 The Manual Approach o sasssh a ccoaistantieGe inkcaneteeoweeadams V 3 Using the Dri
19. Driver Window to appear Step 6 Identify the Survey File to be Copied The Get Pipeline Survey from Gx field on the Gx Driver window will list all of the survey files currently stored on your Gx s Flash memory card Highlight the survey file that you would like to be copied to your PC Also check off the box labeled Copy to Local Folder and identify the target folder s location on your hard drive in the field underneath using the browse button This is the folder that you set up previously Step 1 above in which to save all of your survey files copied from your Gx 81 Also if you used the metric system on the data logger check off the box labeled Use Metric Finally click on the Go button on the Gx Driver window Step 7 Examine the Survey Data Prior to Posting the Data to the ProActive Database You will have actually completed the process of copying a survey file to a local folder on your PC by this point using the Driver in ProActive However before exiting the Driver it is recommended that you examine your survey data prior to posting the data to the ProActive database The process of posting the pipeline survey data to the ProActive database is detailed in the ProActive Training Manual and is beyond the scope of this manual To examine the survey data in the Gx Driver you can click on the various page tabs now appearing on the Gx Driver Pipeline Survey window Su
20. With this option Option 2 you do not use the MCM data probe cables Instead you would connect banana plug cables not supplied with the package to the banana plug terminals on the data probes and via a common connection you would connect both banana plug cables to either the black or the red banana plug terminal on the data logger depending on whether you wanted to read negative or positive pipe to soil voltages see above 85 Trail Wire 3 pin terminal Chainer Test Station Hip Pack or Back Pack Counter Display N Trigger 3 pin terminal To Data Probes DATA LOGGER 5 pin erminal Figure 2 Set up for automatic triggering of readings every 2 5 feet or every meter in the metric case 86 APPENDIX 2 How to Delete Survey Files from the Gx Once you have copied your survey files to your PC see Section V you can if you wish delete the files from your Gx s Flash memory card Since your survey files are stored on the Flash card you will have to access this memory SystemCF in order to delete selected survey files The procedure would be as follows Tap on the Start button on the Gx Tap on Programs Tap on Windows Explorer Double tap on SystemCP Double tap on Gx_Data Tap and hold on the Survey File you wish to delete until a menu pops up e Tap on the Delete option This will delete the highlighted survey file 8
21. ana plugs rather than via the 5 pin terminal For the Continuous CIS selection the options will be as displayed on the screen shown below for the left hand data probe red handled data probe and the right hand data probe green handled data probe Setup 1 0f 5 Survey Continuous CIS Rect Mode cycle ON OFF Cane Button s Allowed To D C P Survey Survey Locations None Increasing E Decreasing C DCVG Sided Pause Yi C Use Metric Beatle PAUSA 20m In this case the 4 combinations possible for selection for the left hand and right hand switches are as follows Flag Pause means that the left hand switch will designate a survey flag and the right hand switch will be used to interrupt pause readings and to re start readings Pause Flag means that the left hand switch will be used to interrupt pause readings and to re start readings and the right hand switch will designate a survey flag 13 Flag Flag means that both switches can be used to designate survey flags and neither switch can be used to interrupt pause readings Pause Pause means that both switches can be used to interrupt pause readings and to re start readings D C P D C P stands for Data Collection Point and on a CIS usually would represent a test station either the initial hook up station or a reconnect test station where the trail wire is broken and reconnected to the pipe The data pr
22. argest picture size highest resolution setting QSXGA 2048x1944 You can return to the Survey screen after the picture taking process by tapping on the X button on the Picture screen Edit Survey Data Collected survey data can be edited by tapping on the Edit Survey Data button or by using the Ctrl and E keys The screen shown below will be displayed depending on the readings values and reading interval etc 42 Edit Survey Data Bal Dist Location OnjMax V Of a 1 0 00 0 00 0 011 0 a 2250 2 50 0012 0 5 00 5 00 0 012 0 7 50 7 50 0 013 a _iow Details Delete To End Delete Done sstart lfc SOAD 10 47 am The data to be viewed can be selected by entering values in the From and To fields and tapping on the Retrieve button Using the horizontal and vertical scroll bars you can scroll through the collected data A row of data can be deleted by highlighting the row and tapping on the Delete button Multiple rows can also be deleted at the same time Pictures can be viewed and or deleted by first highlighting the location see screen below and tapping on the Pictures button 43 Edit Survey Data Data Alt Quality Pe a nem Once highlighted the picture can be deleted by tapping on the Delete button or viewed by tapping on the Pictures button Delete Last Readin By selecting the Delete Last Reading option fr
23. ated with performing a CIS we have designed an example section of pipeline and the steps outlined below with regard to conducting a CIS pertain to this example section Our 350 foot long section of pipeline is shown below TS1 0 00 0 TS2 Asphalt Road 2 40 0 2 70 0 to 2 90 0 Flag Flag Flag 1 00 0 2 00 0 3400 0 valve 3 350 0 Example Section of Pipeline The important features on this section of pipe are as follows TS1 Test Station 1 Coincides with station 0 00 0 reference zero station Flags Located at 1 00 0 100 feet from reference zero station 2 00 0 200 feet from reference zero station and 3 00 0 300 feet from reference zero station TS2 Test Station 2 located at 2 40 0 240 feet from reference zero station 60 Asphalt Road A 20 feet wide asphalt road located b w 2 70 0 and 2 90 0 270 feet from reference zero to 290 feet from reference zero Valve Located at 3 50 0 350 feet from reference zero station Let s consider as an example that you are doing a Trigger Mode CIS with the left hand cane set to flag and the right hand cane set to read Also you are performing a current interrupted CIS with a 0 7 sec ON and a 0 3 sec OFF interruption cycle Also let s assume that you are beginning your survey at the beginning of the pipeline or at reference location zero Since in our example we have set up the right hand cane to be the read cane voltages will be recorded each t
24. ave To record a waveprint tap on the Save button on the Waveform screen The screen shown below will be displayed Note The specific folders presented on the screen will reflect the contents of the Gx_Data folder on your Flash memory card SystemCF The Gx_Data folder is used to store all of your survey files 54 Save As 2462SU01_2110 chuch bcd cnT1 hgg cab ddd hh eee ik Franks SU101 Name Untitled Type Waveform Files agstart fe 2 1 SM i 8st am You have a number of options regarding saving the waveform data The recommended option if you are recording waveform data in the context of a pipeline survey is to save the waveform data file inside the actual pipeline survey file To do so you would double tap on the survey file folder and enter a descriptive name for the waveform data file in the Name field For example the screen shown below would be displayed for the case of selecting the ccc survey file for storage of the waveform data file named Test Station 1 55 Save As 3J S stemCF GX_Data ccc 2 fox x Name Test Station 1 Type Waveform Files x Baj oeeo Alternatively you could just enter a name of the waveform data file in the Name field and tap on the OK button In this case the waveform data file will be saved directly to the Gx_Data folder Regardless of your target folder you should tap on the OK bu
25. ave encountered by tapping on the menu button in the Feature field and highlighting your selection Alternatively you could perform a quick search for the feature by entering in the Quick Search field the number associated with the feature or the first few letters of the name of the feature Skip Distance Example If for example the geo feature is an Asphalt Road and the width of the road that you have to cross without taking readings is 30 feet you would enter a Skip Distance of 30 feet In this example you are telling the data logger to assume that when you trigger the next reading you will be 30 feet beyond where you triggered your last reading Optional You can enter a Feature Length value if you wish although this entry does not have any impact on the stationing In addition you can check off the box labeled Known Station and enter a station value if you know that the current stationing is incorrect This will give the software a new location reference going forward When the Geo Feature data are saved by tapping on the Save button you will be given the opportunity to take a photograph at the Geo Feature location as indicated by the question displayed on the screen shown below 71 Single Test Station Beatle TE Answering Yes on the above screen will take you to the Pictures screen as described in Appendix 3 of the Gx Data logger Pipeline Survey User
26. ble connection of the adapter s output to the data logger Since the Backpack has an integrated chainer unit the trail wire connection to the Gx data logger is made by connecting a banana plug cable from the counter display unit to the Gx please see Appendix 1 IV 2 How to View and Save a Pipe to Soil On Off Waveform When you are performing a current interrupted CIS it is recommended that you examine the pipe to soil voltage waveform at your starting location starting test station and it is suggested that you make a recording of the waveform using your Gx data logger With at least one of the two reference electrode data probes making good electrical contact with the soil above the pipe at the starting test station and a test cable connected from the pipe connection to the red banana plug terminal on the Gx assuming you are using black band cables with the data probes either tap on the WAVE button located at the top of the Survey screen or tap on Survey Options and then tap on Wave The screen shown below will be displayed depending on the previous settings 51 Waveform goat le SRE soa Read By tapping on the Read button on the above Waveform screen you can view the pipe to soil voltage waveform at the test site A typical waveform would be as shown in the screen below Note The example waveprint shown is not a real waveprint it is only presented for illustrative puposes
27. by tapping on the menu button in the Condition field and making an appropriate selection When the Valve Device data are saved by tapping on the Save button you will be given the opportunity to take a photograph at the Device location as indicated by the question displayed on the screen shown below 75 Single Test Station Beatle TE Answering Yes on the above screen will take you to the Pictures screen as described in Appendix 3 of the Gx Data logger Pipeline Survey User s Manual Note Several seconds are required to open the picture program How to Position the Camera for a Picture Since the camera on the Gx is located on the underside of the handheld unit it is necessary to remove the unit from its mounting platform by grasping the unit around its mid section and pulling in an upward motion The unit should snap out of its retaining brackets You can now position the camera to take your photograph since the coiled cable connecting the Gx to the dual probe adapter provides a considerable degree of flexibility The unit can then be snapped back into position on the platform after picture taking by lining up the groove on the bottom orange bumper with the registration post on the platform and pressing in a downward motion Note By tapping on the X button on the Pictures screen top right hand corner after taking a photograph you will be returned to the Survey screen
28. ches on the data probes when appropriate to do so With the Belt Pack option the Gx data logger mounts onto a platform at waist level allowing the operator to view the screen at all times and to make any selections required by tapping on the screen Also the dual probe adapter shown in Section III is mounted on the underside of the platform allowing convenient 5 pin cable connection of the adapter s output to the data logger The Hip Pack containing a spool of insulated copper wire trail wire typically 1 mile or 3 miles in length is attached to the waist band of the Belt Pack and a banana plug cable in the case of the Hip Pack without chainer connects the banana plug terminal located on the underside of the Hip Pack to the Gx data logger In the case of a Hip Pack with chainer the trail wire connection to the Gx data logger is made by connecting a banana plug cable from the counter display unit to the Gx please see Appendix 1 Gx Backpack Option The MCM Backpack allows a 5 mile spool of trail wire to be used with the trail wire spool mounting directly onto the backpack assembly 50 As with the Gx Belt Pack the data logger mounts onto on a platform that attaches to the Backpack allowing the operator to view the screen at all times and to make any selections required by tapping on the screen Also the dual probe adapter shown in Section II is mounted on the underside of the platform allowing convenient 5 pin ca
29. cian Name you can enter the name of the surveyor Comments Descriptions By tapping in the field labeled Comments Descriptions you can enter any general comments you might have regarding the survey perhaps weather conditions soil conditions etc Also shown on the above screen are the survey filename Survey Name field and the Start Date and Start Time for the survey Survey Date field Note The survey files are stored in the Gx_Data folder on the Gx data logger s CompactFlash memory SystemCF a non volatile memory Note These data cannot be changed manually Step 19 Tap on the Next button on the above screen A version of the screen shown below will be displayed depending on the settings selected for the previous survey Setup 5 of 5 Voltmeter Setting Read Mode on off Pairs DSP mode Range 5 7 YDC 400 MOhm Cycle ms On roo off eoo E hal eoio E 26 Read Mode The 5 choices available for the voltmeter s reading mode are displayed by tapping on the menu button in the Read Mode field on the above screen The new screen will be displayed as shown below Setup 5 of 5 Voltmeter Setting Read Mode Spe ime eat nee On Off Pairs DSP mode On Off Pairs Min Max mode Cycle ms ON On Off Pairs GPS sync mode Single Read GPS Timing Range Beatle ST ABa Note Your selection of voltmeter reading mode should be made with r
30. dings or having the readings triggered automatically using a triggering cable In the Continuous CIS mode readings are logged based on timing For example if you indicate that you require 40 readings to be logged between 100 foot survey flags and that it will take you 60 seconds to walk 100 feet the data logger will log readings every 1 5 seconds You can have the data logger learn your walking pace which might turn out to be different from 60 seconds for 100 feet in which case the software will adjust the timing between logged readings accordingly in order to target 40 logged readings between 100 foot survey flags see Setup screen 3 of 5 for the options available if the Continuous CIS mode is selected An advantage of Continuous CIS over Trigger CIS is that manual triggering of readings using push buttons is not required nor is an automatic triggering cable with associated trail wire measure counter system However pre measured equally spaced survey flags are required for Continuous CIS and if the pipeline does not run through an open area extensive pausing may be required Step 6 Select the function operating mode of the push button switches associated with the data probes during the survey itself and at test stations data collection points D C P s Survey The functionality available for the data probe switches depends on the survey mode selected in Step 5 Trigger CIS or Continuous CIS For the Trigg
31. e associated with this device as opposed to a default name Also by checking off the box labeled Known Location you have the opportunity to manually enter the actual stationing for the test station if known if it is different from the location entered during survey setup for the Start Location You should then tap on the Next button The screen shown below will be displayed depending on the previous settings 57 Device Readings Sinale Test Station Pipe To Soil on 1 2546 v 0 9365 v Reading OnjOfF DSP v Reading 5 7 VDC 400 MOhm v esate BUBA 705 4m The On and Off pipe to soil potentials measured per cycle at the starting test station will be displayed on the above screen assuming that one of the On Off pairs voltmeter reading modes has been selected see the Reading field on the screen Should you be performing an uninterrupted CIS you should select one of the Single Read options in which case only a single field will be presented for the voltage reading You would then tap on the Save button to record the data at the first test station As an alternative you could press the push button switch on either one of your data probes canes to record the data assuming that you selected the save option for the canes at D C P s during the survey setup process When the data are saved you will be given the opportunity to take a photograph at the Device location as
32. e established automatically If the connection is not established automatically make sure that the connection option on the Gx is USB_Serial which it should be by default To do so tap on the Start button on the Gx screen tap on Settings tap on Control Panel and double tap on PC Connection If USB_Serial is not indicated tap on the Change Connection button and select USB_Serial from the drop down menu Repeat the connection process Step 3 Double click on the ProActive icon on your PC s desktop screen 80 This will open up ProActive s main menu window A window labeled Entire Database will also be seen here The suggested organization of your database is discussed in the ProActive Training Manual Step 4 Click on the Surveys button on the speed button bar This will open a window labeled Data Logger Get Pipeline Survey By clicking on the menu button in the Data Logger field you can select the data logger from which you are copying the survey file The various data loggers currently supported by ProActive are offered as choices in the menu list Step 5 Select the Gx Data logger Option Highlight GX in the menu list and make the appropriate Survey Type selection CIS in this case Next click on the Go button This will open up a window labeled Gx Driver Pipeline Survey Note It may take a few seconds for the
33. ed GPS This box should be checked if you only want differentially corrected GPS data to be logged by the Gx data logger on the survey Leaving this box un checked will result in standard GPS data being logged in cases where differentially corrected data are not available Note If this boxed is checked and the unit is not receiving a differential correction message no GPS data will be logged Use GPS Altitude If this box is checked altitude data will be logged in addition to the Lat Long data whenever GPS data are logged Note Altitude data on some GPS units are not particularly accurate Log GPS at Flags If this box is checked GPS data will be logged automatically at survey flags when either the flag button is tapped directly on the Survey screen or when the push button switch on the designated flag cane is pressed Log GPS at DCP Feature If this box is checked GPS data will be logged automatically at Devices or Geo Features when either the Device button is tapped on the Survey screen and a Device reading is logged or when the Geo Feat button is tapped on the Survey screen and a geo feature is registered Auto Log GPS By tapping on the menu button in the Auto Log GPS field the selections available will be displayed By selecting one of these options you can elect to have GPS data logged automatically at every CIS reading at every second CIS reading at every fifth CIS readin
34. eference to your previous selections of Rectifier Mode and GPS Receiver Type Single Read This voltmeter mode would be selected if you were performing a non interrupted CIS with either the rectifiers ON continuously Always ON or OFF continuously depolarized pipeline On Off Pairs DSP mode This voltmeter mode would be selected if you were performing a rectifier current interrupted CIS In this mode the software uses digital signal processing D S P to determine the voltage during the ON portion of the interruption cycle and the voltage during the OFF portion of the cycle for each successive cycle 27 Note A measurable difference between the ON and the OFF voltage readings is required for this reading mode ie a measurable IR drop is required Note In this reading mode you do not have to concern yourself with selecting recording times for the On and Off readings for each cycle with respect to the On to Off transitions and the Off to On transitions of the waveform as the software determines appropriate locations on the waveform for you This is in contrast to the GPS Sync reading mode see below On Off Pairs Min Max mode This voltmeter reading mode should be selected if you were performing a rectifier current interrupted CIS and there was considerable interference indicated on the waveform In such a case in the absence of well defined steps IR drops the software determines a average value for the maxi
35. eform for both the On and Off readings with respect to the On to Off transitions and the Off to On transitions of the waveform as opposed to the software determining appropriate locations on the waveform for you as in the case of the On Off Pairs D S P reading mode see above With this voltmeter reading mode selected the screen shown below will be displayed revealing an additional button GPS Settings 29 Setup 5 of 5 Voltmeter Setting Read Mode onjorF Pairs GPS sync mode Range 5 7 YDC 400 MOhm Cycle ms On roo Off fod Rak ove E GPS Settings By tapping on the GPS Settings button the screen shown below will be displayed depending on the previous settings GPS Sync On Off Settings On Delay fiso mS GPS Port com 4 Off Delay 150 mS GPS Type MCM Internal Downbeat Each Minut x Cycle Start On gt Off sstart f E MB 25m 30 GPS Type Select the type of GPS receiver being used Currently only the MCM Internal GPS Receiver can be used with the GPS Sync reading mode On Delay amp Off Delay By tapping in the fields labeled On Delay and Off Delay you can enter specific times in milli seconds for these parameters For example if 150 ms was selected for the Off Delay the data logger would record the voltage value sampled 150 ms after the rectifier current was switched from the ON to the OFF state Also if 150 ms was
36. er CIS selection the options will be as displayed on the screen shown below for the left hand data probe red handled data probe and the right hand data probe green handled data probe 11 Setup 1 0f 5 survey Trigger CIS Rect Mode Cyce ON OFF X Cane Button s Allowed To D C P Survey Locations start fe WB 11 40 a Manual Triggering of Readings When the data probe switches are used to trigger readings as opposed to an automatic triggering cable there are 4 combinations possible for selection for the left and right switches as indicated by tapping on the menu button in the Survey field on the above screen Read Read means that both switches can be used to trigger readings Flag Read means that the left hand switch will designate the location of a survey flag and the right hand switch will be used to trigger readings Read Flag means that the left hand switch will be used to trigger readings and the right hand switch will designate the location of a survey flag Flag Flag means that both switches can be used to designate survey flags and neither switch can be used to trigger readings 12 Automatic Triggering of Readings The selection in this case should be Read Read only since the readings are triggered by an automatic triggering cable In this case the data probe switches have no function since the data probes are connected to the Gx Data logger via the ban
37. erformed to fully satisfy the integrated requirements of an ECDA evaluation The 4 major steps in the process are summarized below Step 1 Pre Assessment This step requires the integration of historical construction operations and maintenance records for each ECDA Region Step 2 Indirect Inspection The objective of this step is to estimate areas of active corrosion by performing above the ground measurements The results obtained in Step 2 are compared with the information compiled in Step 1 and areas that need to receive Direct Examination are identified Step 3 Direct Examination The objective of this step is to excavate dig at least in those areas identified using the complementary steps above steps 1 and 2 and by direct inspection to measure the extent of corrosion in those areas Typically wall thickness is measured and other corrosion related data are collected in this step Step 4 Post Assessment The objective of this step is to prioritize the repair schedule and to decide on the mitigation approaches to be used based on the results obtained in Step 3 The period of time before the next integrity evaluation is to be undertaken is also decided in this step for each ECDA Region The subject of this Training Manual is a measurement process that is applied in Step 2 of the ECDA evaluation process ie in the Indirect Inspection Step The measurement process is known as a close interval potential survey CIPS
38. g at every tenth CIS reading or not at all never at CIS readings Step 17 Tap on the Next button on the above screen The specific screen that will be displayed will depend on if you selected Trigger CIS or Continuous CIS on the first screen 21 Screen for Trigger CIS Case Name of P L Valve Segment Starting Location e 0 Flag Dist Error Limit Dist Per Reading k s ft Distance Between Flags fico ft Number of Data Probes Screen for Continuous CIS Case Name of P L Valve Segment Starting Location 1 25 0 Station Number Flag Dist Error Limit Dist Per Reading 5 ft Distance Between Flags 1100 ft Time to walk between iat Secscesccccnccsccncenceece Seidel 22 Dist Per Reading By tapping in the field on the above screen labeled Dist Per Reading you can type in the interval distance in feet or meters for the metric case expected between reading Typically in CIS work this expected interval distance is 2 5 feet or 1 meter in the metric case Note 2 5 feet or 1 meter should be selected for the Dist Per Reading when readings are to be triggered using an automatic triggering cable since the counter is calibrated for this distance Distance Between Flags By tapping in the field labeled Distance Between Flags you can type in the survey flag interval distance between survey flags for the section of pipeline being measured as
39. ges to your setup selections with the exception of your Survey Type selection and the currently indicated Station If you have selected a Trigger Mode CIS for example you cannot change to a Continuous Mode CIS without setting up a new survey You can however make other selection changes For example if you examine the pipe to soil voltage waveform prior to beginning a CIS survey highly recommended and discover that there is considerable noise on the waveform you might decide to switch the voltmeter reading mode from On Off Pairs DSP to On Off Pairs Min Max Or in another case you might decide to change the Distance Per Readings interval from 2 5 feet to 5 0 feet for example To change survey settings tap on Settings and tap on Change Global Settings View Settings To simply view your setup selections you can tap on View Settings on the above menu Alternatively you can use the Ctrl and S keys 36 Voltmeter To run the stand alone voltmeter either tap on the Voltmeter option on the menu or use the Ctrl and M keys Wave To run the stand alone waveprint generator either tap on the Wave option on the menu or use the Ctrl and W keys Please see section IV 6 below for more information on running the stand alone voltmeter Take Pictures You can run the integrated camera program by either tapping on the Take Pictures option on the menu or by using the Ctrl and A keys
40. he stationing will be correct 3 00 in this example Notice that a G designation has been added to the graph for Geo Feature You would also trigger the flag cane your left hand reference electrode cane at this point to register the survey flag Now let s assume that you encounter a Valve at an additional 50 feet down the pipe from this latest survey flag Since a valve is considered a Device you would stop and tap once on the Device button on the Survey screen By tapping on Valve from the Device List the screen will be displayed as shown below 73 Device Readings 8g start fe SADE 10 41 am By tapping on the Next button the screen shown below will appear Device Readings valve Pipe To Soil on 1 2546 v of 0 9365 Reading Oni OFF DSP x Reading 5 7 YDC 400 MOhm v Se BB 1042 4m 74 In order to view the pipe to soil voltages at the valve you would connect a banana plug test lead from the red banana plug terminal on the Gx to the valve temporarily disconnecting the trail wire lead from the Gx You would save the displayed pipe to soil readings at the valve location by triggering the right hand cane button or by tapping on the Save button on the above screen Having done so the screen shown below will appear Device Readings asta fe A 10 46 am This screen allows you to note the condition of the valve
41. he underside of the handheld unit 69 it is necessary to remove the unit from its mounting platform by grasping the unit around its mid section and pulling in an upward motion The unit should snap out of its retaining brackets You can now position the camera to take your photograph since the coiled cable connecting the Gx to the dual probe adapter provides a considerable degree of flexibility The unit can then be snapped back into position on the platform after picture taking by lining up the groove on the bottom orange bumper with the registration post on the platform and pressing in a downward motion Note By tapping on the X button on the Pictures screen top right hand corner after taking a photograph you will be returned to the Survey screen Answering No on the above screen will return you directly to the Survey screen Geo Feature Now let s assume that at an additional 30 feet down the pipeline from the Reconnect location you encounter an asphalt road which is an example of a Geo Feature ie a geographical feature When you reach such a location you would tap on the Geo Feat button on the Survey screen and the screen shown below will be displayed Geographic Feature Quick Search Feature 1 Highway Notes Feature Length Skip Distance Cancel a Known Location estat fe sO BM 10 10 am 70 You can select the type of geo feature that you h
42. ime you trigger the right hand cane s push button by pressing down on the button as you walk down the length of the pipeline Triggering a reading using the right hand cane button in this case would have the same effect as tapping on the Read button on the Survey screen Since you would have recorded pipe to soil voltages at the starting test station see Section IV 3 above you would have already established a Device location and as shown below the device is identified in the graph on the Survey screen by the letter D In fact all Devices registered as you go down the line segment will be designated on the graph in this fashion 61 station 0 0 1 2546 von Total Dist ara Last Ref a 0 9365 vor Geo Feat GPS Data Undo Flag Red GPS Status Differential GPS sate SevB wso Since we indicated during the survey setup process that we expected to record voltages every 2 5 feet each time you trigger readings using the right hand cane s push button the data logger will assume that you have traveled an additional 2 5 feet down the line segment Consequently you should try to place the electrodes over the pipe at 2 5 feet intervals in this example The first triggered reading should be taking when you are physically standing at the starting test station location When this first reading is triggered the screen will indicated a total distance from start of zero as
43. ing black band cables negative pipe to soil readings will be recorded 47 For normally positive pipe to soil readings red band cables should be used to connect the data probes to the dual probe adapter as illustrated in the figure below HOOK UPS FOR CIS Trail Wire sees She Hip Pack a a ae Pipeline Dual Probe Adapter Right Hand Left Hand Cane Use Cane Use Red Band Red Band Cable Cable For Normally Positive Readings Cable Connections for Hook Up of MCM s CIS Test Equipment for Positive Pipe to Soil Readings The red band cables indicated in the above figure will connect the data probes to the positive side of the voltmeter The pipe under survey should be connected via the trail wire to the positive side of the data logger s voltmeter red banana plug jack in the case of normally negative pipe to soil readings and to the negative side of the voltmeter black banana plug jack in the case of normally positive pipe to soil readings Please see the figure below for the layout of the terminals on the Gx For the case of normally positive readings the black banana plug jack would be used for the trail wire connection and the red jack would not be used 48 Top Side of Gx Data logger Screen Side GPS Antenna O O Terminal 3 Terminal 2 Terminal 1 Red Banana Plug Black Banana Plug 5 Pin Data Probe Terminal Terminal Connector Terminal CONNECTS TO CONNECTS TO DUAL HIP PACK NOT USED PROBE AD
44. ish to hear any alarm sounds enter 9999 Step 15 Select the Type of GPS Receiver Being Used If Any By tapping on the menu button in the GPS Type field on the above screen the screen shown below will be displayed 19 Setup 2 0f 5 z v Only Log Corrected GPS Use GPS for Altitude Log GPS at Flags Log GPS at DCP Featur 9999 Never Beep Max Far Near Diff f AC Cycle fo Hz Bsa SDH rom As can be seen from the above screen there are 5 choices for GPS Type None This means that a GPS receiver is not being used MCM External This means that an external MCM GPS Accessory is being used currently not available NMEA This means that an external NMEA compatible GPS receiver is being used such as a Trimble unit Manual This means that location data will be entered manually when the GPS button is tapped on the survey screen during a CIS MCM Internal This means that the Gx s internal GPS unit will be used a u blox NEO WAAS enabled receiver Select the appropriate choice by tapping on your selection Com Ports When using an external GPS unit NMEA option connected via a serial cable select the COM 1 option which represents the built in serial port located under the flap on the bottom left hand side of the Gx data logger The COM 4 option will be automatically selected when the MCM Internal GPS receiver option is selected 20 Step 16 Select GPS Data Logging Options Only Log Correct
45. ll be permanently ON at least for the duration of the CIS Always OFF Select this option if all rectifiers or other DC voltage sources having an affect on the line will be permanently OFF at least for the duration of the CIS Note The selection you make for the Rectifier Mode should relate to the Reading Mode selection you make on Setup screen 5 of 5 Step 11 Tap on the Next button following your selection of Rectifier Mode 17 The screen shown below will be displayed Note The specific selections shown on the screen will depend on the selections made for the previous survey Setup 2 Of 5 GPS Type mcm Intern v Only Log Corrected GPS V Use GPS for Altitude GPS Port com 4 E Log GPS at Flags Auto Log GPS Never Auto Log GPS at DCP Featur Beep if below 0 850 y 9999 Never Beep Max Far Near Diff fl AC Cycle eo Hz start fe SBS B 4 15PM Step 12 Make Selection of Max Far Near Diff value The value entered in this field will represent a threshold level with respect to the difference between a Far Ground P S reading and a Near Ground P S reading expressed as a percentage recorded at a trail wire reconnect test station For differences above the entered threshold value an alarm message will be displayed on the Gx survey screen For example if the number 5 is entered in this field the maximum allowable difference between FAR and NEAR GROUND P S readings will
46. llow the procedures detailed below Double click on My Computer on your PC Double click on Mobile Device Double click on SystemCF Double click on Gx_Data Right click on the survey file you wish to copy amp select Copy Paste the file into a local folder on your hard drive Create a compressed zipped version of the file You would now be in a position to send the compressed file via email for example to a recipient who has access to the ProActive software program Note Do not rename the survey file prior to sending the file to the recipient as the survey file must have the same name as the survey itself V 3 Using the Driver in the ProActive Software Program Step 1 Create a folder on your PC s hard drive perhaps in your My Documents folder that will be used to permanently save files copied from your data logger You might choose to name this folder something like Surveys Step 2 Establish a connection between the Gx and your PC Gx Data loggers can be connected to a PC using the USB cable supplied with the unit Connection via the USB Cable The requirements and procedures with regard to Gx Data logger PC connectivity depend on the operating system of the PC 79 Case 1 Windows XP or earlier PC Operating System The Microsoft ActiveSync communication program is required on the PC If not currently installed the application can be installed from
47. ma and an average value for the minima occurring in the waveform as being representative of the On and the Off value per cycle With this voltmeter reading mode selected an addition field Moving Average Samples will be displayed as indicated on the screen shown below Setup 5 of 5 Voltmeter Setting Read Mode on off Pairs Min Max mode Range 5 7 YDC 400 MOhm Cycle ms On roo off fs00 Moving Average Samples f make eib E 28 Moving Average Samples The default value for Moving Average Samples is 4 In this case 4 sample readings would be used to compute an average value for the Minimum Min voltage reading during each OFF portion of the cyclic waveform and also 4 readings would be used to compute an average value for the Maximum Max voltage reading during each ON portion of the waveform Different values can be entered for this parameter in order to try to optimize the On Off readings depending on the nature of the interference occurring On Off Pairs GPS Sync This voltmeter reading mode can only be selected if you are using the built in MCM Internal GPS receiver AND GPS current interrupters Note A primary feature of this reading mode is that the readings data are GPS time stamped Consequently applications such as telluric current compensation tools can be applied to such data With this reading mode elected you can select the recording times on the wav
48. obe switches can have no functionality at these devices the none selection or they can be used to save the D C P readings such as Near Ground P S or Far Ground P S readings at a reconnect test station the Save selection Step 7 Make Survey Locations selection Once a value has been entered for the Distance between Readings see the Setup 3 of 5 screen that distance for example 2 5 feet can be added to each successive station number each time a reading is triggered or it can be subtracted from each successive station number each time a reading is triggered Your selection of Increasing or Decreasing will depend on your walking direction over the pipe with respect to the pipe s stationing You would select Increasing if the station number will be increasing as you perform the survey and you would select Decreasing if the station number will be decreasing as you perform the survey Step 8 Make selection of Metric units if required By checking off the box labeled Metric the reading interval distance between triggered readings and the flag internal survey flag spacing will be displayed on the Setup 3 of 5 screen in meters as opposed to feet Step 9 Check off the box labeled DCVG Sidedrains in CIS Survey if you plan to log DCVG sidedrain readings at previously located anomalies during the course of your CIS 14 Note This is a special case tha
49. oltmeter mode is similar to the Single Read mode except that in this case the data logger uses the GPS clock signal to associate readings with the actual time they were made When the Single Read GPS Timing mode is selected the screen shown below will be displayed Setup 5 of 5 Voltmeter Setting Read Mode Single Read GPS Timing Range 5 7 VDC 400 MOhm Bak Caieoem The only addition information that needs to be supplied here is the type of GPS receiver you will be using via the GPS Settings button Note Currently only the MCM Internal GPS Receiver can be selected for this voltmeter reading mode Note A primary feature of this reading mode is that the readings data are GPS time stamped Consequently applications such as telluric current compensation tools can be applied to such data Click on the OK button on the GPS Settings screen in order to return to the Voltmeter Settings screen Screen 5 of 5 32 Cycle On amp Off Times The specific On and Off times setup on the current interrupters should be entered in the On and Off fields respectively on the Setup 5 of 5 Screen Note The On and the Off times should be entered in milli seconds Note Ideally the interruption period On time plus Off time should be less than the time between triggered readings on a CIS For short waveform periods 1 second for example this is not a concern as a typical
50. om the menu you can have your last reading deleted without having to go through the Edit Survey Data option Alternatively you can use the Ctrl and D keys to access the function Add Comments You can add remarks comments at anytime on your survey by selecting the Add Comments option and manually entering data on the screen shown below 44 Add Coments f Note asta fe SOA 11 39 4m Alternatively you can use the Ctrl and O keys to access the function Tap on the OK button on the above screen to return to the Survey screen after entering your comments Restart Flags You can reset survey flags by selecting the Restart Flags option from the menu This action will establish your current location as the new zero reference as far as flagging is concerned and zero should be entered automatically in the Last Reference Distance field on the Survey screen Set Graph Scale Rather than having the software auto scale the graph on the Survey screen to accommodate the actual data values logged you can establish the maximum and minimum values for the graph scale in order to restrict the data values to be displayed on the graph To do so you would un check the box labeled Auto Scale on the window shown below and enter specific values for maximum and minimum 45 Maximum 0 500 Minimum ar GPS Status Standard GPS tale PoaBi nsa Tapping on the OK but
51. proceed to Section V 3 Note The ProActive program is required to actually view the survey data If you do not have ProActive installed on your PC and you cannot bring your Gx to a PC that has ProActive installed on it you can copy survey files manually from your Gx to your PC and you can subsequently send the copied files to a recipient who is a ProActive user If this situation applies you would proceed to Section V 2 11 V 2 The Manual Approach Step 1 Establish a connection between the Gx and your PC Gx Data loggers can be connected to a PC using the USB cable supplied with the unit Connection via the USB Cable The requirements and procedures with regard to Gx Data logger PC connectivity depend on the operating system of the PC Case 1 Windows XP or earlier PC Operating System The Microsoft ActiveSync communication program is required on the PC If not currently installed the application can be installed from the CD provided with the Gx Data logger Once installed make sure that the Allow USB Connections option is selected in the Connection Settings window of the ActiveSync application Next connect the USB cable from the Gx Data logger to the PC and switch ON the Gx via the RED power button The connection should be automatic and you will be asked if you d like to set up a partnership or not between the Gx and the PC Answer NO to this question as the ability to transfer file data is all that i
52. readings between the two flags By checking the box labeled Auto Pacing Mode you will enable the data logger to automatically adjust the reading locations in order to evenly space the readings between two survey flags Auto Learn Read Rate optional Finally in the case of the Continuous CIS mode readings are logged based on timing For example if you indicate that you require 40 readings to be logged between 100 foot survey flags and that it will take you 60 seconds to walk 100 feet the data logger will log readings every 1 5 seconds You can have the data logger learn your walking pace which might turn out to be different from 60 seconds for 100 feet by checking the box labeled Auto Learn Read Rate In which case the software will adjust the timing between logged readings accordingly in order to target 40 logged readings between 100 foot survey flags in this example Number of Data Probes In the case of the Trigger CIS mode you can use one data probe or two data probes for the CIS Highlight the appropriate radio button based on your situation Note Two data probes are required for a Continuous CIS Name of P L optional By tapping in the field labeled Name of P L you can enter the pipeline name Note This is not necessarily the same name as the filename for the CIS that you used to setup the survey file Valve Segment optional By tapping in the field labeled Valve Segment
53. readings in response to the beep emitted by the counter unit every 2 5 feet or every meter for the metric case 84 Option 2 _ Automatic Triggering Figure 2 illustrates the cabling configuration for this option A trigger cable is connected from the counter unit to the 5 pin terminal on the data logger as shown in the figure The red and the black wires of the trigger cable are connected to the External Beeper connection terminals on the underside of the counter unit The red and the black wires connect to the terminals labeled positive and negative respectively Again as in Option 1 the structure pipe can be connected to either the positive or the negative side of the voltmeter by connecting a banana plug cable from the counter display unit to either the red or the black banana plug terminal on the data logger By connecting this cable to the red banana plug terminal of the data logger positive side of the voltmeter as shown in the figure the data probes would be connected to the negative side of the voltmeter via the black banana plug terminal on the data logger In this case you would read normally negative pipe to soil voltages If you wanted to read normally positive pipe to soil voltages you would connect the banana plug cable from the counter display unit to the black banana plug terminal on the data logger and you would connect the data probes to the red banana plug terminal on the data logger Note
54. rvey Settings Readings Device Readings Graph By clicking on these page tabs you can view information on the Survey settings or you can view the actual survey and device data please see the ProActive Training Manual for details 82 Appendix 1 How to Connect the Chainer and Counter Unit for Close Interval Survey Applications The following section describes how you would make appropriate connections in order to incorporate the MCM chainer wire measure and counter unit for CIS applications When properly configured the counter emits a short audible signal beep each time 2 5 feet or 1 meter for the metric version of trail wire is fed through the chainer A longer beep is emitted each time 100 feet or 100 meters for the metric version of trail wire is fed through the chainer An operator can then trigger readings or designate survey flag locations in response to the audible signals using the push button switches on the MCM data probes This represents the manual triggering option An alternative approach is possible which is known as the automatic triggering option In this case readings are triggered automatically each time 2 5 feet or 1 meter for the metric version of trail wire is fed through the chainer In this case the gray colored trigger cable Part SINO24 is required Option 1 _ Manual Triggering Figure 1 illustrates the cabling configuration for this option As can be seen from the
55. s operating system and our pipeline survey application program Gx_PLS pre installed The survey application will remain installed unless the batteries are allowed to fully discharge Application re installation is an automatic process however during a Cold Boot process please see the Gx Pipeline Survey Data Logger User s Manual for details However your pipeline survey data will always be safe regardless of battery status as these data are stored in a non volatile Flash memory on the Gx I 1 Gx Data logger Setup for CIS Step 1 Double tap on the Gx_PLS icon on the Gx desktop The screen shown below will be displayed Step 2 Tap on the Survey button located on the menu bar The screen shown below will be displayed xi trl Under Survey there are several options If this is a new survey not a continuation of a previous survey tap on New Survey The screen shown below will be displayed Enter New Survey Filename col ak Sosa Dp Step 3 Enter a filename for the Survey This should be a descriptive name that will help you identify the survey at a later stage Perhaps the name of the section of pipe you are surveying could be part of the filename CIS and the survey date do not have to be part of the filename as these tags are incorporated with the survey on the ProActive side assuming that you will be downloading the survey data to the ProActive application Note You will not
56. s required as opposed to a synchronized partnership You can then exit the Activesync application If the connection is not established automatically make sure that the connection option on the Gx is USB_Serial which it should be by default To do so tap on the Start button on the Gx screen tap on Settings tap on Control Panel and double tap on PC Connection If USB_Serial is not indicated tap on the Change Connection button and select USB_Serial from the drop down menu Repeat the connection process Case 2 Windows Vista or Newer such as Windows 7 PC Operating System The Gx Data logger connects to these systems via the Mobile Device Center which replaces the Activesync program on the PC side Make sure that the USB connection option is set up via the Mobile Device Center Connect the USB cable between the Gx Data logger and the PC and switch ON the Gx The connection should be established automatically 78 If the connection is not established automatically make sure that the connection option on the Gx is USB_ Serial which it should be by default To do so tap on the Start button on the Gx screen tap on Settings tap on Control Panel and double tap on PC Connection If USB_Serial is not indicated tap on the Change Connection button and select USB_Serial from the drop down menu Repeat the connection process Step 2 Fo
57. selected for the On Delay the data logger would record the voltage value sampled 150 ms after the rectifier current was switched from the OFF to the ON state The delay times selected should be based on knowledge of the waveform particularly in terms of any transition spiking The idea is to select sampling times that will avoid any spiking Downbeat By tapping on the menu button in the Downbeat field you can select the downbeat schedule associated with the particular current interrupters you are using for the survey The three options are Each Minute Each Hour and Midnight For example if Each Minute is applicable to your interrupters and you select this option for the Downbeat schedule you are indicating to the data logger software that at the top of each minute there will be an On to Off transition the rectifier current will switch from On to Off at the top of each minute This would mean in this example that the software would only have to count back to the top of the last previous minute to have a timing reference Cycle Start Finally if your interruption cycle starts with the current in the ON state the first transition is from ON to OFF check off the box labeled Start Cycle un check this box if the opposite is true Click on the OK button on the GPS Settings screen in order to return to the Voltmeter Settings screen Screen 5 of 5 31 Single Read GPS Timing This v
58. suming that survey flags have been laid out Typically survey flags are located at 100 feet intervals In such a case you would have a new reference a stationing correction every 100 feet Note If survey flags are not in use enter zero in this field In this case tapping accidentally on the Flag button will not adversely impact your stationing Flag Dist Error Limit Select the maximum permissible error between the actual number of readings logged between 2 survey flags and the expected number of readings By tapping in the field labeled Flag Dist Error Limit you can type in the maximum permissible error For example the maximum permissible error is indicated as 20 on the above screen If the reading interval is expected to be 2 5 feet and the survey flag separation is 100 feet this means that 40 readings are expected If however only 30 readings are actually logged between survey flags an error window will appear on the screen since there is a 25 difference between the expected and actual number of reading in this example No error window will appear if the difference is less than 20 For this example you could have a minimum of 32 readings and a maximum of 48 readings between survey flags to stay within the 20 max error allowance 23 Auto Pacing Mode optional Select whether or not you would like the readings to be uniformly spaced between any two survey flags regardless of the actual locations of the
59. t would only apply if a DCVG survey had been perform in advance of your CIS and it was specified that you should have the anomaly locations determined by the DCVG survey integrated with your CIS file By checking this box an additional Device named Mark DCVG will be made available in the Device list which has a sidedrain prompt associated with it as indicated in the screens shown below Device Readings isa Lanbi 15 Mark DCVG Mark DCVG DC G Side Drain On mY OFF mY Total m Drop 82 23 1 71 89 94 Reading Mode Onjorr DsP Voltage Range 400 m DC 10 MOhm jeystat fe SBUB 320 The Mark DCVG device will not appear in the Device list if this box is not checked which would be the case if you were conducting a regular CIS Step 10 Make Rectifier Mode selection By tapping on the menu button in the Rectifier Mode field on the above screen the screen shown below will be displayed 16 Setup 1 0f 5 Survey Trigger CIS DCG Sidedrains in CIS Surveys _ Use Metric tale Carei E As can be seen from the above screen there are 3 choices for Rectifier Mode as follows Cycle ON OFF Select this option if the DC current flowing in the soil to the pipe will be interrupted switched ON and OFF in a cyclic fashion during the CIS Always ON Select this option if all rectifiers or other DC voltage sources having an affect on the line wi
60. the CD provided with the Gx Data logger Once installed make sure that the Allow USB Connections option is selected in the Connection Settings window of the ActiveSync application Next connect the USB cable from the Gx Data logger to the PC and switch ON the Gx via the RED power button The connection should be automatic and you will be asked if you d like to set up a partnership or not between the Gx and the PC Answer NO to this question as the ability to transfer file data is all that is required as opposed to a synchronized partnership You can then exit the Activesync application If the connection is not established automatically make sure that the connection option on the Gx is USB_Serial which it should be by default To do so tap on the Start button on the Gx screen tap on Settings tap on Control Panel and double tap on PC Connection If USB_Serial is not indicated tap on the Change Connection button and select USB_Serial from the drop down menu Repeat the connection process Case 2 Windows Vista or Newer such as Windows 7 PC Operating System The Gx Data logger connects to these systems via the Mobile Device Center which replaces the Activesync program on the PC side Make sure that the USB connection option is set up via the Mobile Device Center Connect the USB cable between the Gx Data logger and the PC and switch ON the Gx The connection should b
61. the essential components of a close interval potential survey measurement apparatus Data L Test Reference Electrode aa ae Station z so foste D Buried Pipeline Figure 1 Key Components of a CIS Test Equipment System Pipe potentials versus the copper copper sulfate electrode potential are recorded at close intervals for example every 2 5 feet using a data logger The data logger s internal voltmeter is connected between the pipe and typically two copper copper sulfate reference electrodes For negative pipe to soil readings the pipe is connected to the positive side of the voltmeter while the reference electrodes one of which should be in contact with the soil at all times are connected to the negative side of the voltmeter For the case of pipelines that are cathodically protected via impressed current rectifier anode systems CIS surveys are performed as the rectifier current is interrupted switched On and Off in a cyclic fashion In such cases both On and Off pipe to soil potential values can be determined and saved by the data logger for each interruption period The advantage of being able to interrupt the CP current is that the polarized pipe potential the On potential value minus the IR drop in the soil can be determined which is typically known as the instant off potential SECTION II HOW TO SETUP THE DATA LOGGER FOR CIS APPLICATIONS Your Gx data logger will arrive from MCM with the Window
62. ton will return you to the Survey screen SECTION HI TEST EQUIPMENT HOOK UPS FOR CIS III 1 How to make Cable Hook Ups for CIS Applications The hook up connections for CIS applications employing MCM test equipment are illustrated in the figure below Note The connections shown below are for normally negative readings 46 HOOK UPS FOR CIS Trail Wire ee ee Hip Pack a aye ea Pipeline Dual Probe Adapter Right Hand Left Hand Cane Use Cane Use Black Band Black Band Cable Cable For Normally Negative Readings Cable Connections for Hook Up of MCM s CIS Test Equipment for Negative Pipe to Soil Readings As can be seen from the above figure a pair of canes reference electrode data probes is illustrated the left hand cane red handled cane and the right hand cane green handled cane These canes which will be placed on the soil above the pipeline in an alternating fashion have push buttons on top of the handles so that the operator can trigger readings on his command at each of the CIS measurement locations as well as at Devices The canes data probes are connected as shown to the input terminals of the dual probe adapter and the output of the adapter is connected to the 5 pin connector on the top side of the data logger This effectively connects the reference electrodes to the negative side of the data logger s voltmeter since black band cables are shown in the above Figure By us
63. tton to save the waveform data file Load By tapping on the Load button on the Waveform screen and highlighting a particular waveform data file displayed you can have the previously saved waveprint displayed by tapping on the OK button on the screen IV 3 How to Record the Pipe to Soil Potential s at a Starting Test Station It is also recommended that you record the pipe to soil potential s at the starting test station This will represent the first Device Data Collection Point associated with the survey To do so tap on the Device button on the survey screen The screen shown below will appear 56 Note An additional device named Mark DCVG will be available for selection if the box labeled DCVG Sidedrains in CIS Survey was checked off during initial survey setup Device Readings Single Test Station Reconnect CU Single Test Station Test Station wi AC Line Crossing w No Bond Line Crossing w Bond Line Casing Test Station Consumer Purchase Sales Tap POD Device Name Known Location pro 8 estat fe gt WO ocean As can be seen from the above screen you can choose from a number of Devices In this case you would tap on Single Test Station to highlight this selection Optional By checking off the box labeled Device Name you can manually enter a descriptive name for the test station The name you enter here will b
64. ver in the ProActive Program eeeeee APPENDIX 1 How to Connect the Chainer and Counter Unit for CIS Applications ccc cece eens APPENDIX 2 How to Delete Survey Files from the Gx SECTION I INTRODUCTION AND BACKGROUND I 1 Introduction This manual is designed to provide individuals who will be performing Close Interval Potential Surveys CIPS or CIS with a practical knowledge of how to select appropriate test equipment how to setup and properly connect the test apparatus how to actually perform close interval potential surveys and ultimately how to download pipeline survey data from the data logger to a PC using either the ProActive or Gx ESD software applications I 2 Background on the ECDA methodology and the role of CIS By way of background the National Association of Corrosion Engineers NACE under a directive from the U S Government recently developed a methodology for assessing and reducing the impact of external corrosion on the integrity of onshore buried pipelines primarily ferrous pipelines The methodology is termed an External Corrosion Direct Assessment ECDA ECDA is a continuous improvement process designed to not only identify areas where external corrosion is underway but to also predict potential future corrosion areas which will assist greatly in future corrosion prevention The ECDA methodology is a 4 step process and each step must be p
65. walking pace would translate to a time between triggered readings of greater than 1 second However care should be taken if longer waveform periods are in effect for example several seconds in which case a slower than normal walking and triggering pace would have to be employed in order to avoid recording several same value readings until the waveform data are refreshed 1 e until a new cycle of data is used Range By tapping on the menu button in the Range field you can select the voltmeter range and associated input impedance setting for your application from the full list of available options Note Use the scroll bar to view all options The recommended setting for the Range for CIS is 5 7 Volts DC which provides an associated input impedance value of 400MOhm This setting provides a relatively fast response time 80 ms which is important in fast cycle interruption applications Also the 400MOhm input impedance minimizes reading errors associated with any high source resistance measurements and the 5 7 V DC Range should be suitable for most On and Off CIS reading values Step 20 Tap on the OK button on the Setup 5 of 5 screen Versions of the screens shown below will be displayed for the Trigger CIS and the Continuous CIS modes depending on the start location entered previously and the location type entered previously station number feet or milepost or station number meters
66. yed station You should then tap on the Next button The screen shown below will be displayed depending on the previous settings 66 Device Readings Reconnect Far Ground reading on 1 2546 v of 0 9365 Reading On OFF DSP x Reading 5 7 VDC 400 MOhm v estat fe Po EE You are being prompted here to record the Far Ground reading prior to breaking the trail wire connection to the starting test station By tapping on the Save button the screen shown below will be displayed depending on previous settings Device Readings Reconnect Metal IR o 0 0056 0 0049 Reading On OfFF DSP 7 Reading 5 7 YDC 400 MOhm v Bsa c SDM ea 67 At this point you are being prompted to take Metal IR readings between your current test station TS2 and the previous test station TS1 To do so you would connect a test lead from the black banana plug terminal on the Gx to the test station TS2 and remove the reference electrode data probes from the measurement circuit you could place the reference electrodes on top of your shoes for example At this point the Gx will be reading the potential difference between the two test stations the far ground station and the near ground station If you d like to record the Metal IR data you would save the readings by tapping on save after setting up to take the readings The third prompt screen associated with a

CIS Training Manual – Gx Version

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CIS Training Manual &ndash; Gx Version

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CIS Training Manual – Gx Version