Fume cupboards - installation and maintenance
Contents
1. 105 EXdmibationand Test OF re clrCcU avon TUNIS CUDDO SNES cst uu ere T NAR 17 TG TACHI I Velie ERAAN AAAA ANANA ANNAA ANANA RANNAN NANNAN AAN meuspene not 17 I E Gl eis O c OR LS AAE ten toner I em teen te en ee ee ene ee eee re I7 t2 BECOMING O AOAO ANN sga E 17 ED FunNnTrad ecc andina O i E E ee ne een ee eee 18 Appendix 1 SMAGT NEWA ECA TUS CD OC ANG S 20 Appendix 2 Flow chart of ducted fume cupboard examination and testing process tat Appendix 3 VOP ORC N46 6 Mammen ine ee oer ere tre erate mere een ne reer nn enon ener ee ee ee ene 25 University of Reading 2015 Page 3 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation 3rd Edition September 2014 1 SCOPE This Safety Code of Practice CoP describes the University of Reading standards for selection installation commissioning use maintenance and decommissioning of fume cupboards This includes fume cupboards walk in fume cupboards and recirculatory fume cupboards It is intended for laboratory managers Estates and Facilities inspection and test contractors and suppliers This CoP EXCLUDES microbiological safety cabinets capture hoods down flow benches and other forms of Local Exhaust Ventilation LEV e This CoP should be read in conjunction with e Safety Guide 28 The Assessment and Control of Hazardous substances COSHH e Safety Guide 46 Management and Safe Use of Work Equipment which describes the management2. a red fail label must not be used If the test engineer is not able to access any areas the Building Manager must be informed and the cupboards in that area must not be used E amp F are responsible for forwarding the written results of tests to the Building Manager Where remedial work or repair is required the School should confirm to E amp F that the fume cupboard is required or not If the fume cupboard is to remain in use it is E amp F s responsibility to decide exactly what remedial work is required taking into account the test engineer s recommendations bearing in mind that engineering judgement may be required University of Reading 2015 Page 16 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation 3rd Edition September 2014 If the fume cupboard is not fit for use it must not be used and it must be labelled as above and unambiguously taken out of commission either until it has been satisfactorily repaired or fully decommissioned Where flow rates have been adjusted E amp F are responsible for ensuring that the room intake air is balanced Appendix 2 summarises the process for thorough examination and test of DUCTED fume cupboards 10 5 Examination and test of re circulatory fume cupboards Recirculating fume cupboards are also subject to maintenance and testing under COSHH regulations These cupboards are considered to be School departmental equipment As such maintenance and
3. e Sound pressure measurement see 5 11 of BS EN 14175 4 e Commissioning and testing of any other systems installed with the fume cupboard such as scrubbers or fire extinguishing systems In addition to the tests above on site testing of variable air volume fume cupboards should include e Extract volume flow rate at the minimum opening and at 50 of the test sash position e Testofset points see 5 3 4 BS EN 14175 6 e Testofresponse time see 6 4 BS EN 14175 6 All user equipment that may impinge on the performance of the cupboard must be installed in the lab and where relevant switched on during the commissioning tests Any equipment that will be used within the cupboard and which may affect its performance must also be installed and Switched on 8 2 Re circulatory fume cupboards Commissioning procedures shall be in accordance with BS 7989 2001 for recirculating fume Cupboards The commissioning tests required include e Visualinspection e Face velocity e Containment test e Room air velocity test e Alarmsystem test PEUS e Particulate filter and seal integrity test where fitted in accordance with BS EN 12469 with a leakage rate of lt 003 leakage to HEPA filter where fitted e Installed gaseous phase filter tests optional If mobile re circulatory fume cupboards will be moved within a laboratory commissioning tests Should be carried out at each location where practical to confirm satisfactory performance 9 INFO
4. required to confirm whether the performance of a fume cupboard is acceptable with any given situation Guidance Existing installations may not always conform to these guidelines for siting Where there is doubt about effectiveness testing may be required to confirm a satisfactory level of user protection See section 10 5 7 1 2 Extraction system Design and installation of the ductwork fans and related air handling systems within the laboratory should be in accordance with BS 7258 Part 2 sections 3 2 and 3 3 and the general principles described in the HSE guidance note HSG 258 Controlling airborne contaminants at work 7 1 3 Dispersal of contaminants Ducted cupboards rely on the dilute and disperse principle to remove contaminated air from the workplace and exhaust it to open air normally at roof level They must not create a hazard at the point of dispersal the exit dispersal point and contaminated air must not be drawn into the building through open windows ventilation systems etc The normal location for exhausts is 3m above roof level or 125 of the building height above ground whichever is the greater Ducted units must have the exhaust fans sited as far away from the cupboard as practicable This is usually on the roof of the building This ensures that if the ducting develops a leak then air will be sucked into the duct If the ducting was under positive pressure any air in the duct would leak out into the b
5. responsibility of the School Department The difference between them is University of Reading 2015 Page 17 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation 3rd Edition September 2014 e Mothball the facility is retained for future use with services still available but made safe so that it cannot be used in the interim i e isolated from any ducting for example with a blanking plate utilities and if fitted the waste discharge sink capped to prevent fumes or smells being drawn into the room when the waste trap dries out The mothballed fume cupboard must be clearly labelled Do not use out of commission Decommissioned the facility will not be required in the future and it is either removed completely or physically disconnected from all services so that it cannot be used again All utilities must be Strioped out or physically disconnected and capped back to a safe point Complete removal of the entire unit is preferred if possible but if not it must be locked off to prevent accidental usage In both cases the unit will be removed from the maintenance register The School Department must take all reasonably practicable measures to clean and decontaminate fume cupboards as part of the handover or decommissioning process It is the responsibility of the Laboratory Manager to ensure that any fume cupboard is made safe before vacating the area All waste and redundant materials must be removed Accessible s
6. testing must be organised by the School The test requirements are the same as for ducted fume cupboards with the addition of an integrity check for HEPA filters Other filters should be tested and or replaced at intervals as recommended by the manufacturer 10 6 Maintenance e E amp F are responsible for identifying maintenance requirements and for arranging maintenance and repair Maintenance requirements will be defined by reference to the Manufacturer s O amp M manual where available e Apply arisk assessment based approach to determine the maintenance programme planned planned preventative or reactive for fume cupboards taking into account the substances in use and the consequences of failure of containment e After any maintenance works which might affect fume cupboard performance a face velocity measurement and a smoke pencil test should be carried out by a competent person Major modifications to the fume cupboard or extract system may require full recomissioning including containment testing 11 CHANGE OF USE If the use of a laboratory or a process changes the suitability of the fume cupboard must be reviewed For some types of work e g work with radioisotopes perchloric or hydrofluoric acids additional wash downs or scrubbers may be required while work with nanoparticles may require special HEPA filters fitted to a recirculating system 12 DECOMMISSIONING OR MOTHBALLING The option to decommission or mothball is the
7. the process and hazardous substance concerned c The date of the last thorough examination and test d Theconditions at the time of test and whether this was normal or special conditions e Information about the fume cupboard which shows its intended operating performance for adequately controlling the hazardous substance li whether the system is still achieving the same performance lil if not the adjustments or repairs needed to achieve that performance f Themethods used to make a judgement at e ii and e iii e g visual pressure measurements air flow measurements dust lamp air sampling tests to check the condition and effectiveness of the filter g The date of examination and test h Thename job title e g senior engineer and employer of the person carrying out the examination and test i The signature or other acceptable means of identifying the person carrying out the examination and test j The details of repairs carried out or needed The effectiveness of the repairs should be proved by are test to be organised by E amp F All fume cupboards must be labelled with the results of the most recent examination and test and with a retest date If a fume cupboard fails a test the engineer must affix a red fail label immediately and inform the School normally the Building Manager in addition to sending the test results to E amp F The School must ensure that all users understand that cupboards marked with
8. to operate the fume cupboard correctly as well as the limitations of the system A user manual must be provided including the general operating and safety instructions and maintenance and cleaning instructions This is in addition to the Operation amp Maintenance Manual 9 4 Registration with E amp F All new ducted fume cupboard installations must be registered with E amp F Maintenance This is the responsibility of the School Department even where E amp F Projects have been responsible for procurement installation and commissioning 10 THOROUGH EXAMINATION TEST AND MAINTENANCE A thorough examination is required at least every 14 months in accordance with COSHH Competent persons must design maintain and carry out the thorough examination and be qualified to BOHS P601 amp 2 or equivalently qualified For ducted systems selection of the competent person is the responsibility of E amp F For recirculating systems the responsibility lies with the School 10 1 Preparation for thorough examination and test E amp F must advise Building Managers when test engineers are due to carry out maintenance and testing The fume cupboards must be made safe by the School to ensure that there is no risk to the engineers or their equipment This will include e Removing allitems where possible e Sealing chemicals e Removing all sharp items such as needles or glass pipettes e Wiping down the interior of the fume cupboard to remove a
9. A EEANN Il 7 1 4 E INS aee aeea E E E E E E E E E E E A E E E 11 S LOMME ONN a eee ee EEE E ee E E E EE ee A ee 11 8 1 UCO TUR O OO ae a etnee ceonE eceo oeO ne 11 8 2 Rome EA T T a O E aa ee T2 2 EE CRG Gaateis guROLa sesle 9 8 s elrciellaciys c14 0 1 ee ee en eee ers Er Erk F err a ener ete ere et es 1 2 9 1 COMMISSIONING FECOMS o ceecccsecccseesssessseessseeseseesesecseecsecesseeeesecsesesseessecesseeessessesessetesateesaeessieseeteeeeiees 12 9 1 4 BO CTIE UO elssee reer renner E E tren rere cerven eareren terrane rarer tarry 13 Liz Recirculating fume CUPDOAMCS cececcceessetsteeseteseesesseecseceeseeseecseeesseeecseeessessssesseesseeesseeeees 13 g2 fas 1610 709 a gt 010 ete me nr ee IS 2 5 WIS od Gre 90 E eee ee eee 14 9 4 PS IS lr OM OU A E S E E E E E E E EE E E E E T 14 10 Thorougnhexamiination testanamMantendNOC seinci tirni an SENARES ER RERNE 14 101 Preparationtforthoroughexamination and TeS Eessen onn naig a i a aE niie 14 10 2 Personal Protective EQUIPMENT ccccccccsccsccsscssecssccseessecseccsscssecseccsecsaesssccsscseecsecesecseecseeestesesstens 5 10 3 Examination and test FQUIFGMIGIUS vsisvsaxssinesicyncxs cain cious evmneiatnn spent nentisyncaeanstannckebloneaaeeelabtekentagenss 15 104 Recordo lt clagia eNOgre Guts Une te tet et ek tt ee ee he eee eee ee re 16 University of Reading 2015 Page 2 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation 3rd Edition September 2014
10. Health amp Safety Services TA University of lt Reading afety Code of Practice 49 Part 2 University of Reading 2015 Page 1 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation 3rd Edition September 2014 Contents TO ace 4 2 Summary of the COSHH Regulations in relation to FUME CUPDOANIAS oo cccceetcsecteteeteeeeeteeteens 4 CEE pc s 812 O cls nen tte enn eee en ee ee 5 Du Duties on Heads of Schools and department Managers cecccecccceeeseeeeeeseseeseeeeseteeeesseeeeteeeeae 5 5 2 Estates and Facilities reSDONSIDINITIOS ccc ccccsscsssessecseccseessecssccsecsaecseccsecssecsecesscaesaeeesseaeenees 5 R AE A OS aE E E E 6 5 FUME cupboard performance CLiteLia cccccccccsecsecscsececsecsesecsecsecsesacsecsecsesscsecsecsesscsecsessesassessesatsaeseeaees 6 Design and Ss c t i eresie a E EE EE 7 6 1 segoe koe o n n a E E E ee y 6 2 Design of fume cupboards and associated extract SYSTEMS ccccccceteetesetesteeeseeesteeeeen 8 one Ducted cabinets cccccsessessssssssssssssesssssesecssessessesesessesseseeesaesersaeseeesseseeseeseseserserseaesersarseesaesarsaneness g 6 2 2 SM URTO CUS T koetaan a Oa O E ROE R AR Oaa g 7 Siting and installation OF NEW CADINETS sessen EErEE EEE EA EEE EEEE E EEEE EEE EEEE 10 7 1 SOU CUI ets a ii ete es ei A ee ele eae 10 M VARTA CEDO a O oiei iein E E T EE E E R sonic 10 Telz OSA E N EE E E E E E E 11 7 dco DIEPE Oy Ci co INO e eenean AAEE EEEN EEREN ENE
11. RMATION TO BE SUPPLIED AT INSTALLATION 9 1 Commissioning records University of Reading 2015 Page 12 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation 3rd Edition September 2014 9 1 1 Ducted fume cupboards The commissioning records must be provided to E amp F and to the School Department before first use of the fume cupboard Commissioning results must be available for reference with the user manual or system logbook 9 1 2 Recirculating fume cupboards The commissioning records must be provided to the School Department before first use of the fume cupboard Commissioning results must be available for reference with the user manual or system logbook 9 2 Product manual All new installations must be supplied with a product Operation and Maintenance manual as defined in BS EN14175 2 2003 and other information to include a Description of main construction parts and materials for the fume Cupboard and any associated extract systems b Installation instructions c Drawings showing the complete final installation d General operating and safety instructions e Maintenance and cleaning instructions and spare part list f Type test report g Theresults of the commissioning tests undertaken by the installer and any proposed amendments to the purchaser s requirements PLUS for re circulatory fume cupboards h Limitations on the suitability of the fume cupboard and filters i Filter retention capaci
12. UME CUPBOARDS Selection installation 3rd Edition September 2014 e Mobility some models Disadvantages of re circulatory fume cupboards Filters are specific for groups of chemicals and hence the filter selected must be compatible with all Substances to be used Substances used must not change without first checking compatibility with the filter Filters may not be available for work with some substances Filters will become saturated after continual use or in the event of a significant spillage If breakthrough occurs hazardous substances will be recirculated into the laboratory Filters will require periodic replacement with associated costs HEPA filters are required for hazardous particulates including nanoparticles Redundant filters need to be handled and disposed of as hazardous waste with associated safety requirements and on going costs Requirement for enhanced user education to enable them to recognise the limitations of re circulatory cabinets If recirculating cabinets are used in proximity to traditional ducted cabinets users may be confused and limitations may not be recognised If the cabinet is mobile and is moved performance may be compromised by external influences such as air flow Each move will require a commissioning test University of Reading requirements Recirculating fume Cupboards must not be used for Highly toxic chemicals Regular use of toxic and or flammable solvents in large quantities Rad
13. appropriateness of heat recovery solutions e he appropriateness of high performance fume cupboards Guidance Each fume cupboards costs approximately 1 800 year to run based on 2012 prices therefore energy savings can be significant but must be considered in the context of safety requirements Further information on energy saving solutions can be obtained from the University Energy Manager Campus Services 6 2 1 Ducted cabinets Ducted cabinets are suitable for e Radioactive materials e Flammable liquids and solvents e Toxic materials They are not suitable for work with e Biological agents e Nanoparticles nanotubes due to the need for filters to be fitted which can adversely affect performance e Pilot plant scale quantities of hazardous substances e Larger quantities of incompatible materials which could mix within common extract ducting 6 2 2 Re circulatory cabinets Proposals to install re circulatory cabinets must be considered on a case by case basis While they have some inherent advantages primarily energy efficiency they are not suitable for all applications Avoids need for ducting with lower installation costs Avoids problems of having insufficient make up air to compensate for air extracted from the laboratory by ducted cupboards Energy cost savings by avoiding discharging cooled or heated air to atmosphere University of Reading 2015 Page 9 Safety Code of Practice 49 Part 2 F
14. ction e Washdown and drainage e Transport velocities air velocity required to ensure collected particles remain airborne and are not deposited along the extract system e Siting of discharge flue at sufficient height to minimise the risk of fumes being drawn into the building through open windows or intake grilles e Discharge velocity e Access for maintenance inspection and cleaning University of Reading 2015 Page 8 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation 3rd Edition September 2014 It must not be possible for a laboratory to be contaminated with hazardous materials from the fume cupboard or associated ductwork caused by failure of any parts of the system i e make up air opening and closing of doors or windows failure of other fume cupboards or back pressure from other rooms See BS EN 14175 2 2003 and BS EN 14175 3 2003 for more information on design issues Consideration must be given to energy saving solutions including e Ability for users to switch off when system is empty of hazardous materials and not in use e Variable Air Volume VAV controls to regulate face velocities at different sash heights aligned with variable controls to make up air Supply e Auto sash controllers to regulate face velocities aligned with VAV solutions e Fanspeed controllers with manual sashes where auto sashes are not feasible e Sash open warning systems where auto sash closure is not feasible e The
15. d Fail sticker and due date of next test Sends sticker and reports failure to School report with advice on any remedial representative and E amp F actions to E amp F E amp F forwards report to Building Manager AHSC for School to advise on E amp F forwards report to Building need to repair or decommission Manager AHSC School takes cabinet out of use School decides if cabinet is required for future use and liaises with E amp F to agree actions required School checks report if remedial workif identified as necessary School raises WREN for reactive maintenance UNLESS itis decided that cupboard is not required and should be taken out of use Cabinetis not needed or is not repairable E amp F organises remedial work and re test if required Confirmation ofworkcompleted and re test reports ifrequired sentto School OR lf not required E amp F arranges for fume cupboard to be decommissioned E amp F organises remedial work and re test Confirmation of work completed and re test reports sentto School E amp F decommissions cabinet University of Reading 2015 Page 22 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation Appendix 3 Version control 3rd Edition September 2014 APPROVAL DATE VERSION KEEPER REVIEWED APPROVED BY X X H amp S Every four years XXXXX X X H amp S Annually XXXXX University of Reading 2015 XX XX XX XX XX XX Page 23
16. ean face velocity Where the fume cupboard is used for work with highly toxic volatile materials carcinogens or substances that could cause irreversible damage to health in circumstances where there are doubts about the effectiveness of containment a containment test should be carried out to a standard of 0 005ppm In addition to the fume cupboard itself the associated fans and ductwork must also be examined This will include the following e Check that the extract fan does not overheat e Check onthe extract fan bearings University of Reading 2015 Page 15 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation 3rd Edition September 2014 e Check for excessive noise e Check that the anti vibration mountings are free where accessible e Check that the pulleys are tight e Measure of the fan motor speed e Check for build up of deposits in the fan and housing e Check of the impellers for wear e Check onthe condition and stability of the extract stack and ducting where access is possible e Thatthe correct exhaust duct is identified and that the extract fan is suitably labelled to enable identification 10 4Record of examination and test The test engineer must provide a record in respect of each thorough examination and test of the fume cupboard containing the following details a The name and address of the employer responsible for the plant b The identification and location of the cupboard and
17. eral details of the building in which the fume cupboard will be installed the location of exhaust ducting on roofs the location of the laboratory and the intended siting within the laboratory e Thelocations of doors windows other fume cupboards and LEV systems other laboratory furniture ventilation grilles diffusers or other air moving equipment and extract ducting e Details of laboratory make up air and room ventilation systems e Anylimits on noise levels e Details of existing services such as mechanical electrical plumbing and drainage The E amp F Project Manager should collate all this information and make it available to prospective designers suppliers 6 2 Design of fume cupboards and associated extract systems Designers must take account of e Theclient s requirements for current proposed use and predicted future use e Provision of laboratory make up air e Appropriate extract rate e Prevention of reverse flow and air disturbance e Risk from flammable substances including the airflow needed to dilute the concentration of highly flammable vapours to a Safe level prevention of the spread of fire and smoke and building fire compartmentation e Prevention of hazardous mixing of incompatible substances e Fume filtration e Fume scrubbing e Heat recovery e Energy efficiency solutions compatible with safety requirements e Resistance to chemical attack and physical conditions of use e Noise level e Condensate colle
18. for instalation BS 7989 2001 Specification for recirculatory filtration fume cupboards University of Reading 2015 Page 18 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation 3rd Edition September 2014 NERC guidance on he safe use maintenance and testing of laboratory fume cupboards December 2007 University of Reading 2015 Page 19 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation 3rd Edition September 2014 Figure 1 Minimum distances for new installations to avoid disturbance to the fume cupboard and operator FAR LEFT Keep pedestrian traffic away LEFT Locate fume cupboard clear of adjacent wall FAR LEFT Ensure sufficient distance between front of fume cupboard and bench opposite LEFT Locate fume cupboard clear of opposite wall FAR LEFT Do not have another worker at an adjacent bench LEFT Locate fume cupboard clear of door openings bench ABOVE LEFT Allow ABOVE Keep opposite adequate space for fume cupboards well other workers clear of each other gt 1500mm LEFT Maintain sufficient distance from any air supplies University of Reading 2015 Page 20 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation 3rd Edition September 2014 Figure 2 Minimum distances for new installations for maintaining escape routes I i I i I I i I Y ABOVE Locate fume cupboards in ABOVE D
19. iculate pre filter and a carbon filter before the air is passed back into the laboratory University of Reading 2015 Page 6 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation 3rd Edition September 2014 They are designed to reduce the airborne concentration of a defined range of chemical vapours fumes smells and dusts in the air to acceptable levels The filters are only suitable for specific chemicals Therefore recirculating fume cupboards must not be used for some applications see requirements set out in section 6 2 2 Fume cupboard face velocities Although no maximum face velocity has been set for either type of fume cupboard very high flow rates may cause turbulence and reduce the effectiveness of containment Therefore if the face velocity is more than 1 0 m sec a competent person should check whether or not containment is effective Table 1 Performance criteria for fume cupboards Minimum Face Velocity at sash Type of work l opening height of 500mm Ducted fume cupboards Standard work with hazardous 0 5 m s 20 substances ema High performance low flow fume 0 5 m s cupboards Variable airflow volume fume 0 5 m s 20 at minimum 50 cupboards maximum and maximum sash opening heights Recirculating fume cupboards Standard work with hazardous 0 5 m s substances In all cases the maximum permissible face velocity is 1 m sec Low airflow alarms should be fitted and se
20. ioactive substances Any substance for which the filters are not specified Small molecules such as nitrogen carbon monoxide or hydrogen Boiling off large quantities of solvents or acids High heat loadings where internal surfaces are heat sensitive plastics Unventilated work areas In addition careful evaluation needs to be given before they can be used for work with carbon nanotubes or other nanotechnologies Schools Departments should consult Health amp Safety Services 7 SITING AND INSTALLATION OF NEW CABINETS 7 1 Siting In general the guidance given in BS7258 2 1994 should be followed supplemented by BS EN 1417 5 5 7 1 1 Within the laboratory To enable satisfactory performance fume cupboards must be located where airflow will not be disrupted The proximity of air supply equipment fans open windows and other physical objects such as benches walls and doors can all affect performance University of Reading 2015 Page 10 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation 3rd Edition September 2014 All fume cupboards should be sited in accordance with BS 7258 Part 2 Section 3 BS EN 14175 5 may also be referred to for general guidance The diagrams in Appendix 1 Figures 1 and 2 are based upon BS 7258 Part 2 and outline the University s requirements for siting of fume Cupboards These guidelines will provide the basic conditions for satisfactory performance however commissioning tests are
21. ny chemical residues e Where practical removal of any tubing or pipework protruding from the front of the cupboard e Making available records of fume cupboard usage fume cupboard log book see CoP 49 Part 1 to include all processes and materials used The Laboratory Manager must issue a Permit To Work to authorise work This must specify the laboratories to be visited and the specific fume Cupboards to be tested Any specific instructions or precautions must be identified A Roof Access Permit may also be required University of Reading 2015 Page 14 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation 3rd Edition September 2014 The general laboratory must be made safe with enough clear access for the engineer Where either the fume cupboard or the laboratory has not been adequately cleared the engineer is under instruction not to enter or not to undertake testing Any fume cupboard not tested and out of test must be labelled by the engineer as Not tested do not use The Schoo will be required to take it out of use until it has been tested and passed Where fume cupboards have been used for ionising radiation work the Radiation Protection Supervisor RPS must also sign off the Permit to Work 10 2 Personal Protective Equipment Any person carrying out fume cupboard testing must wear appropriate PPE as a minimum this will be laboratory coat and enclosed footwear Gloves and safety glasses should be
22. o not locate fume cupboards in positions where there is an unobstructed positions where an escape route is forced escape route to cross the hazard area I I I y LEFT Provide alternative escape routes if one route has to pass close to the hazard area ee ee ee ee bench BELOW Provide alternative escape routes from hazard area in laboratories that have more than one fume cupboard A bench I I La I I Tr L University of Reading 2015 Page 21 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation 3rd Edition September 2014 Appendix 2 Flow chart of ducted fume cupboard examination and testing process School ensures fume cupboard is registered with E amp F via E amp F Helpdesk even if the fume cupboard is a new installation installed via E amp F Projects E amp F arranges fora competentengineer to carry out examination and testing onan annual basis Engineer contacts Building Manager AHSC to arrange access Obtains a Permit to Work Checks Log Book for Chemical Usage Data Engineer carries outathorough examination and test comprising Measurement of face velocity Function ofall alarms lights and indicators Check Everwatch airflow sensor with anemometer results Checks sash stop and marks up safe sash height Inspects ductwork fan Engineer sends reportto E amp F Fume cupboard passes est Engineer labels cabinet with Pass Engineer labels cabinet with re
23. pboard that fails this examination must not be used for work with hazardous materials until it has been repaired or replaced University of Reading 2015 Page 4 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation 3rd Edition September 2014 3 RESPONSIBILITIES 3 1 Duties on Heads of Schools and department managers Safety Guide 46 Part 4 section 3 1 summarises manager s general responsibilities for LEV systems In addition with specific reference to the selection and maintenance of fume cupboards Schools and Departments must e Before any new fume cupboard is specified or installed complete a risk assessment that describes the processes for which the installation will be used see LEV selection form on H amp SS website and consult with Estates and Facilities E amp F and Health and Safety Services H amp SS about the selection installation and maintenance E amp F must not to undertake work unless they have been provided with a completed form e Check with E amp F that ducted fume cupboards that the School uses are included in the register of items maintained inspected by E amp F e Co ordinate with E amp F to ensure that ducted fume cupboards are given a through examination at least every 14 months e Provide information about the type of work and risks from substances materials used in the fume cupboard to E amp F so that risks to E amp F maintenance staff contractors and engineering inspectors can be asse
24. rk with radioactive materials Where noted in this CoP BS7258 2 Recommendations for the exchange of information and recommendations for installation is also relevant e Recirculating BS 7989 2001 Specification for recirculatory filtration fume cupboards 5 FUME CUPBOARD PERFORMANCE CRITERIA All fume cupboards have differing characteristics which must be matched to the materials in use within them The following requirements apply Low volume fume cupboards Low volume fume cupboards are now available on the market that operate at only 0 3 m sec compared to the more traditional 0 5 m sec face velocity These have significant energy savings and reduced CO output However if it is proposed to install a low volume cupboard this must be risk assessed using the form on the H amp SS website and H amp SS must be consulted Ducted fume cupboards These operate by extracting hazardous airborne materials to a point above the building where it is diluted with atmospheric air The British Standards do not give fixed performance criteria for different types of work undertaken in a fume cupboard Therefore the University of Reading has adopted the criteria set out in Table 1 below which are in accordance with HSE control guidance sheet 201 Fume cupboard and are considered to represent good practice Recirculating fume cupboards These operate by drawing air into the fume cupboard and exhausting it though a set of filters usually a part
25. ssed and managed generally achieved by maintaining a fume cupboard logbook see CoP 49 Part 1 e Make safe any fume cupboard before maintenance work is undertaken and issue a Permit to Work Permit to work in Labs i e removing hazardous substances decontamination fumigation where necessary Tasks such as electrical isolation is the responsibility of E amp F e Establish asystem to record e The location of each fume cupboard ducted and recirculatory e Theresults of every examination and test plus details of any maintenance taken e Have a management system to report any defects in ducted fume cupboards promptly to E amp F to act on service or test reports from E amp F and ensure that cupboards are taken out of service where system failures have been identified e With respect to recirculating fume cupboards which are the responsibility of the School Department arrange for competent engineers to carry out a thorough examination at least every 14months The School must ensure that items onthe report are acted on anda competent engineer is employed to carry out reactive maintenance e Ensure that fume cupboards are used in the most energy efficient manner consistent with safety requirements e Display appropriate signage and emergency contact details where on going experiments are in progress 3 2 Estates and Facilities responsibilities E amp F will e Design to meet the standards referenced in this Code of Practice and
26. systems required to purchase use and maintain all types of equipment used at work e Safety Guide 46 Part 4 Local Exhaust Ventilation which summarises the legal and management requirements for selecting installing and using all types of LEV e Safety Code of Practice 49 Safe use of laboratory fume cupboards For the purposes of this CoP a fume cupboard is defined as an item of local exhaust ventilation with the following characteristics e If installed after 1990 marked as complying with BS7258 BS EN 14175 or BS 7989 e If installed before 1990 they are enclosed on all sides with an adjustable sash to the front hinged or sliding with an integral work surface and with air entrained in through the front aperture and extracted either directly or indirectly from a point at the top of the fume Cupboard 2 SUMMARY OF THE COSHH REGULATIONS IN RELATION TO FUME CUPBOARDS Suitable LEV systems must be installed where airborne workplace exposure limits are still exceeded after other controls have been put in place HSE publication EH40 Table 1 gives workplace exposure limits The fume cupboard must be correctly specified and designed to ensure it provides the level of protection necessary It must be serviced and maintained to ensure that it remains effective Fume cupboards must be subjected to a thorough examination and test at least every 14 months so as to demonstrate that performance is still within the design parameters Any cu
27. t to alarm at 0 42 m s visual and audio Recommended transport velocity for fume cupboard ductwork Fume cupboards used for vapours smoke and fumes 10 m s Fume cupboards used for light medium dusts and powders 15 m s 6 DESIGN AND SELECTION 6 1 School requirements It is essential that fume Cupboards are matched to proposed use especially when specifying a new installation Therefore Schools Departments need to be able to identify e Thetypes and quantities of hazardous materials that they intend to use or generate e Thekey properties of these materials e The potential risk to operators from airborne hazardous materials e he short and long term Work Exposure Limits WELs for airborne chemical substances to be used and hence how much control will be required University of Reading 2015 Page 7 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation 3rd Edition September 2014 e Lower explosion limit LEL of any highly flammable liquids to be used with the aim of ensuring that the concentration in the body of the fume cupboard and any ductwork does not exceed 10 of the LEL e Compatible and incompatible materials of construction of the fume cupboard e Requirements for electrical gas water and other services A form for describing the proposed activity to be undertaken within each new fume cupboard is available on the H amp SS website E amp F are responsible for identifying and checking e The gen
28. the identified needs of the client School Department e Design and maintain fume cupboard installations in the most energy efficient manner consistent with safety requirements University of Reading 2015 Page 5 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation 3rd Edition September 2014 e Maintain a record of the location of all ducted fume cupboards with identification asset tags e Apply arisk assessment based approach to determine the maintenance programme for fume Cupboards taking into account the substances in use e Arrange for and maintain a record of all maintenance and inspection of ducted fume Cupboards e Inform Schools Departments of any ducted fume cupboard that requires remedial work or which fails an inspection e Arrange for remedial work to be carried out on ducted fume cupboards after confirmation from the School that the fume cupboard is required e Decommission any ducted fume cupboards that fail a thorough examination and test and which are not repaired Section 11 refers to the information to be provided for handover commissioning 4 RELEVANT STANDARDS The relevant standards to be followed by the University of Reading for the manufacture installation commissioning and testing of fume cabinets are as follows e Ducted cabinets BS EN 14175 Fume Cupboards in particular Part 2 Safety and Performance Requirements and Part 4 On site test methods but excluding cupboards used for wo
29. ties j Recommendations on the frequency and methods of monitoring the filters k Recommendations on the procedures for changing the filters safely including manual handling PPE and safe disposal After installation the fume cupboard should bear a plate in a permanently exposed position on which the following is clearly and indelibly marked by the installer a Theinstaller s name or readily identifiable mark if different from that of the vendor b Thevendor s name or readily identifiable mark c The date and reference number of the certificate of compliance specified in clause 9 of BS 72387199 d The face velocity ies specified by the purchaser e The face velocity measured during commissioning f The extract volume rate g The date of the tests when the face velocity ies were measured h Limitations of use including types of material or activities for which itis or is not suitable i Serial number In addition the sash height must be marked University of Reading 2015 Page 13 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation 3rd Edition September 2014 All information must be supplied at handover and not later The fume cupboard must not be used until this information has been supplied and users have been trained in correct performance 9 3 User manual The School Department must be provided with sufficient documents information and training from the supplier so as the user understand how
30. uilding along with possibly dangerous contaminants 7 1 4 Labelling All controls power supplies and ductwork must be labelled so that users and maintenance staff can clearly identify which services and ductwork serves which fume cupboard 8 COMMISSIONING Before first use the system must be formally commissioned and test results recorded so as to be able to demonstrate the correct performance of the entire system and to check for any adverse effects of the room airflow and of the extract system on the performance of the installed fume Cupboard 8 1 Ducted fume cupboards Commissioning procedures shall be in accordance with BS EN 14175 4 2004 for ducted fume cupboards The following inspections and tests will be carried out e Visualinspection see 5 2 of BS EN 14175 4 University of Reading 2015 Page 11 Safety Code of Practice 49 Part 2 FUME CUPBOARDS Selection installation 3rd Edition September 2014 e Face velocity see 5 4 of BS EN 14175 4 and 5 2 of BS EN 14175 3 Performance to be in accordance with the agreed design specification and Table 1 of this Code of Practice e Extract volume flow rate test see 5 5 of BS EN 14175 4 e Pressure drop test see 5 6 of BS EN 14175 4 e Air flow visualisation smoke test see 5 7 of BS EN 14175 4 e Room air velocity test see 5 8 of BS EN 14175 4 e Alarm system test see 5 9 of BS EN 14175 4 e Containment test see 5 10 of BS EN 14175 4 to astandard of less than 0 005 ppm
31. urfaces must be cleaned with a Suitable detergent Sinks should be flushed with copious amounts of water Filters must be removed from recirculating fume Cupboards and disposed of as hazardous waste in accordance with a safe system of work Once cleaned and decontaminated the fume cupboard must be labelled as such Measures must be taken to ensure that the fume cupboard cannot be used and that hazardous materials cannot be placed or stored init As described above this should include locking off and isolation E amp F must arrange for a competent person to decommission and remove ducted fume cupboards The School Department must arrange for safe decommissioning and removal of recirculating systems Any decommissioned fume cupboard can be disposed of as non hazardous waste if it is Known to have been effectively decontaminated If there is a risk that it remains contaminated materials should be handled and disposed of as hazardous waste 13 FURTHER ADVICE AND INFORMATION HSG258 Controlling airborne contaminants at work HSE 2012 http www hse gov uk pubns priced hsg258 pdf EH40 2005 Workplace exposure limits HSE 2011 ISBN 978 0 7176 6446 7 BS EN 14175 Fume Cupboards in particular Part 2 Safety and Performance Requirements Part 3 Type test methods and Part 4 On site test methods but excluding cupboards used for work with radioactive materials BS7258 2 Recommendations for the exchange of information and recommendations
32. worn if indicated by laboratory rules and risk assessment based on the records of fume cupboard usage In some cases respiratory protection may be required in which case itis the engineer s responsibility to assess the correct type and to provide it 10 3 Examination and test requirements See Safety Guide 46 for general requirements regarding inspection and test of LEV systems The University performance criteria to be verified during thorough examination and testing of fume cupboards are set out above in Section 5 Table 1 Thorough examination and test for a standard ducted fume cupboard will consist of e Face velocity test to the relevant performance standard and with reference to type test reports and commissioning reports e Extract volume flow rate test e Pressure drop test across fan and any air purification systems installed e Air flow visualisation smoke test e Alarm system test audible and visual flow rate indicators and associated sensors where fitted e Visualinspection including e visual physical check of the sash mechanism e check of the sash stop and alarm e check of the condition of the baseplate and rear and side walls e check of the condition of all services to the fume cupboard including power sockets controls and lighting e check of the water taps and gas taps where present to ensure they are clean and leak free e Verifying the accuracy of the airflow indicators which must be within 15 of m
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