IIAR 8 - International Institute of Ammonia Refrigeration
Contents
1. Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 12 HAR 8 Public Review 2 Caution tape barricades and or posting personnel at key locations may be used to restrict access to these areas 5 3 1 3 Identify any changes to the site security procedures that are necessary during pump outand decommissioning activities 5 3 1 4 Decide whether to limit and or control access by motorized vehicles such as tank trucks and forklifts during the pum p out and decommissioning activities 5 3 1 5 Identify the vessels tank trucks or tanks that will be used to accumulate any ammonia that is being transferred and ensure that they are designed for ammonia service 5 3 1 6 Determine where any tank truck s will be parked and what connections will be used on the ammonia refrigeration system so that ammonia can be transferred from the system into the tank truck s 5 3 1 7 Determine if any additional labels signs or placards need to be installed during the pump cut anddecommissioning activities such as temporary emergency exit signs 5 3 1 8 Identify any inspections and associated precautions that shall be taken prior to the pump outand decommissioning activities 5 3 1 8 1 If any hoses will be used to transfer ammonia define the steps used to inspect and or test the hoses prior to these activities to ensure that the hoses are designed for use in the conveyan2. Pieter See ed be Goo palena Sascha et es St Theat te leet e Heee Op e pein is ANa a USEPA Fie a Progam RM D Ven EE n 4 5 SE sebereare tothe GRE con cE EA AAR EE ao En cen 5 6 2 A Management of Change Procedure shall be initiated if the facility is subject to the OSHA Process Safety Management PSM Standard and the EPA Risk eae near 2M sea a eee If DP is not oe to Pelu Amona Eo Monagekaedi ARM MDA that are typically addressed as part of the change procedures include 6 2 4 a Review of the impact on safety and health during the pump out and decommissioning activities 5 6 2 2 b Identification of the documentation to be modified to reflect the pump out and decommissioning activities including as applicable al Ammonia inventory b2 Refrigeration system flow diagrams and or piping amp instrumentation diagrams P amp IDs e3 Facility plan view s and or site plan s Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 18 HAR 8 Public Review 2 d4 Equipment list e5 Desired system operating ranges f6 Safety systems g7 Pressure relief system design basis h8 Ventilation system design basis 49 W ritten oOperating procedures 410 Safe work practices k11 Operator training program 412 Contractor program m13 Visitor safety program 14 Preventive maintenance schedules an
3. Training provided and any materials from training activities e g agenda handouts manuals attendance lists Documents showing special qualifications e g welding certifications PPE training use of respirators Regulatory Requirements Confirm decommissioning activities comply with applicable codes standards and regulations Management of Change Procedure initiated Review of the impact of safety and health Identification of documentation that needs to be modified Pre startup Procedures Equipment Equipment Requirements e g specific consumables tools and equipment to be available Materials are confirmed to be ammonia compatible and safe for subject use Maintenance of Equipment and Tools Hoses rated for ammonia service and within their service life Eyewash and body showers Fixed and or portable ammonia detectors Emergency shutdown and isolation Equipment Fixed and or portable ventilation units Operations Prepare Facility Suspend or modify operations Ensure decommissioning precautions and general steps are written Ensure training and safety meetings have been completed Ensure regulatory requirements have been met including the Management of Change Procedure Assemble and or install specific equipment and tools to be used Assemble manpower needed Decommissioning Activities Raising lowering
4. Control of Hazardous Energy 4 1 4 6 29 CFR Part 1910 252 General Requirements Welding Cutting and Brazing Environmental Protection Agency EPA 40 CFR Part 68 Chemical Accident Prevention Provisions Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 10 HAR 8 Public Review 2 Section 5 Preparation 5 1 5 1 1 Initial Planning The following items shall be considered when developing an initial plan to pump cut and decommission a close circuit refrigeration system 5 1 1 1 The reason or reasons that the system or parts there of are to be pamped out e O H the siok is ities sania and or decommissioned PA des A ae 5 1 1 2 Designation of the person s coordinating the pump cxt and decommissioning activities 5 1 1 3 If the complete system is not to be decommissioned specify the refrigeration equipment components and piping that will be pumped out and these parts thahwwt be decommissioned Determine if there are any additional risks due to the physical and operational condition of the equipment components and piping and the approximate amount of ammonia that will be removed 5 1 1 4 Areas at the facility that will be shut down and or the personnel to be evacuated during the pump out and decommissioning activities the preterred pump outand decommissioning activities shall be clearly designated _and res
5. be installed during these activities i Components used to connect equipment tank trucks and or tanks to the system such as portable hoses that are designed for ammonia service j Equipment such as portable lifts that could be used to safely access the equipment components and piping k Fixed ammonia detectors and or portable ammonia detection devices that can be used to detect ammonia levels during the pump ovtanddecommissioning activities l Equipment that can be used to shut down and isolate the system or parts of the system in an emergency Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 20 HAR 8 Public Review 2 6 2 6 2 1 6 3 6 3 1 m Fixed ventilation units and or portable ventilation units for use during these activities n Equipment that will be used to dispose of ammonia lubricating oil and other chemicals after they have been removed from the system Materials All equipment and materials used during pump out and decommissioning activities shall be designed for ammonia refrigerant at the coincident temperature and pressure to which the component shall be subjected No materials shall be used that will deteriorate because of the presence of ammonia or lubricating oil or a combination of both or any normal contaminant such as air or water NOTE The equipment components and piping may be exposed to lower temperatures and
6. emergencies 5 3 1 20 Determine how to use and ormodifythe facility ventilation systems will be operated during the pump ovt and decommissioning activities NOTE Options requitine consideration include shutting off facility HVAC unit s running machinery roof ventilation system s continuously and or providing portable ventilation units during these activities Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 14 HAR 8 Public Review 2 5 3 2 5 4 5 4 1 5 3 1 21 Determine how the ammonia lubricating oil and other chemicals will be disposed of in compliance with applicable regulations 5 3 1 22 Determine the manpower requirements for the pump out and decommissioning activities including when the buddy system shall be practiced 5 3 1 23 Determine whether additional training is needed for the personnel involved in the pump outand decommissioning activities 5 3 1 24 Determine if the emergency action and or response plan needs to be modified to address the pump cut anddecommissioning activities Issues that shall be addressed include release reporting and evacuation procedures Local representatives including the Fire Department and the Local Emergency Planning Committee LEPC shall be contacted in advance of the pyunp out and decommissioning activities and provided a summary of the activities that will take place for those activities where t
7. has be completed and properly documented 9 2 1 4 Ensure that the pre startup procedures have been completed and documented if appleable Complete the Management of Change Procedures which are applicable to the decommissioning activities Consult Section 5 6 for a description of Li ee ee onh 9 2 921 these procedures 9 3 Notification Procedures 9 3 1 Government agencies shall be notified once the pump out and decommissioning activities are completed including 9 3 1 1 Notify representatives from the Fire Department and the Local Emergency Planning Committee LEPC NOTE This notification may be accomplished by submitting a copy of the updated emergency action and or response plan for the facility to these representatives Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 25 HAR 8 Public Review 2 9 3 1 2 Notify applicable government agencies NOTE The following requirements apply in the United States a The RMP eSubmit User s Manual contains instructions to de register a facility from the US EPA s Risk Management Program Rule if the ammonia inventory in the process drops below the threshold in this Rule The process involves submitting a letter to the RMP Reporting Center within six months of the change b Facilities are required to submit an annual inventory report for each hazardous chemical as defined by th
8. lower pressures during pump out and decommissioning activities than during normal operations NOTE See ANSI HAR 2 Reference 4 1 2 for a description of materials Maintenance of Equipment and Tools All equipment and tools used during pump cvtand decommissioning activities shall be properly maintained and in good working order 63 44 Maintenance Pa uc nine Deca E E ae befor Le Re ene aces haem 6 3 1 21 Special attention shall be taken to ensure that the following items will function properly during pump out and decommissioning activities a Hoses rated for ammonia service and within their service life b Eyewash and body showers c Fixed ammonia detectors and portable ammonia detectors d Equipment that would be used to shut down and isolate the system or parts of the system in an emergency e Fixed ventilation units and or portable ventilation units for use during these activities Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 21 HAR 8 Public Review 2 Section 7 Operations 7 1 7 1 1 7 2 7 2 1 Prepare Facility The specific preparations needed before pump out and decommissioning activities commence shall be identified during the preparation stage see Section 5 These preparations may include 7 1 1 1 Suspend and or modify operations at the facility as described in Section 5 3 1 7 1 1 2 Ensure that
9. routes As with any hazardous vapor adequate ventilation is the key to effective control Ammonia in vapor form is lighter than air Typically ammonia vapor rises and diffuses simultaneously when released into the atmosphere It is biodegradable and when released it combines readily with water and or carbon dioxide to form relatively harmless compounds Ammonia may also neutralize acidic pollutants in the atmosphere Additional information regarding the properties of ammonia is published in the HAR Ammonia Data Book At the time of publication of this Standard for the Decommissioning of Closed Circuit Ammonia Refrigeration Systems the ILAR Standards Review Committee had the following members Robert J Czarnecki Chair Campbell Soup Company Don Faust Vice Chair Gartner Refrigeration amp Mfg Inc Eric Brown PE ALTA Refrigeration Dennis R Carroll PE Frick by JCI John Collins Zero Zone Inc Eric Johnston ConAgra Peter Jordan MBD Risk Management Services Inc Trevor Hegg Evapco Inc Thomas A Leighty Refrigeration Systems Company Brian Marriott Marriott and Associates LLC Rich Merrill PE Retired Evapco Inc Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 4 HAR 8 Public Review 2 Joseph W Pillis PE JCI Dave Schaefer Bassett Mechanical Ron Worley Retired Nestl USA Copyright 2014 International Inst
10. that may accumulate in low points in the system 7 2 1 5 Flushing the system or subsystem with an inert gas such as nitrogen to remove any residual ammonia vapor felewine the pump outactuties Precautions shall be taken to ensure that the gas used to flush the system is not discharged directly to the atmosphere if it contains residual ammonia One option is to purge these gases into water NOTE The disposal of all chemicals including ammonia water solutions shall be in compliance with applicable codes standards and regulations 7 2 1 6 Physically removing equipment components or piping from the refrigeration system following lockout tagout line breaking hot work permit and confined space entry procedures where applicable NOTE Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 23 HAR 8 Public Review 2 Section Do not use cutting torches if the equipment components or piping could contain residual ammonia or oil Ammonia Disposal 8 1 8 1 1 8 2 8 2 1 General The method used to dispose of ammonia lubricating oils and other chemicals shall be identified during the preparation stage see Section 5 Issue Related to Ammonia Disposal Issues that shall be considered when disposing of ammonia lubricating oils and other chemicals include 8 2 1 1 Ensure that lubricating oil that might contain residual ammonia is compl
11. HAR 8 Decommissioning of Closed Circuit Ammonia Refrigeration Systems International Institute of Ammonia Refrigeration 1001 North Fairfax Street Suite 503 Alexandria VA 22314 Phone 703 312 4200 Fax 703 312 0065 Note This document shows substantive changes made subsequent to the first public review Certain portions of the original text remain to provide the reader with some context You are invited to provide comments on only the changes shown in blue and red below Please disregard formatting irregularities Contact the IIAR if you wish to see the entire document to gain further context Public Review 2 HAR 8 Public Review 2 Notes on the Standard Text Metric Policy The IIAR metric policy for ANSI standards bulletins and all IAR publications is to use the common engineering inch pound IP unit system as the primary unit of measure and the International System of Units SI as defined in United States National Institute of Standards and Technology Special Publication 330 The International System of Units for secondary units Normative Informative Elements This Standard includes both Normative required and Informative advisory language The bodies of the standard and labeled Appendices are Normative The Foreword Notes and any Appendices labeled Informative are non mandatory Informative material shall never be regarded as a requirement Notice The information contained in this Standar
12. and or response procedures including how to initiate an alarm release reporting procedures and evacuation procedures Regular daily or weekly safety meetings that include facility personnel and or contractors performing the pump out and decommissioning activities shall be conducted The safety meetings shall include as applicable 5 5 3 1 A review of daily work activities to be accomplished 5 5 3 2 A review of safety practices that shall be followed to support these activities 5 5 3 3 Address any concerns regarding the pump cutand decommissioning activities to be accomplished Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 17 HAR 8 Public Review 2 5 5 4 5 6 5 6 1 Records shall be kept to document the training provided and the safety meetings held These records shall include as applicable 5 5 4 1 Training summary sign off sheets 5 5 4 2 Agendas handouts manuals and attendance lists from any training activities 5 5 4 3 Documents showing special qualifications achieved from outside organizations such as welding certifications or training on the use of personal protective equipment such as respirators Regulatory Requirements Purap out and dDecommissioning activities shall comply with applicable codes standards and regulations NOTE requirements Section 112444 of the Clean Air Act and tothe General Duty _ Clause
13. been addressed and the resolutions have been documented Ensure the training has been completed and documented Ensure that the pre startup procedures have been completed and documented if applicable Ensure authorization signatures have been obtained on the form s Notification Procedure s Notify representatives from the Fire Department and the LEPC that the decommissioning is completed Notify applicable government agencies COMMENTS Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 34 HAR 8 Public Review 2 Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 35
14. benefit of the public in light of available information and accepted industry practices However IAR does not guarantee certify or assume the safety or performance of any products components or systems tested installed or operated in accordance with IIAR s Standards or that any tests conducted under its Standards will be nonhazardous or free from risk Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 2 HAR 8 Public Review 2 This proposed Standard is subject to periodic review Up to date information about the status of the Standard may be received by contacting IAR This is a proposed Standard issued for public notice and comment under consensus procedures accredited by the American National Standards Institute It is not a final standard and shall not be used in place of an American National Standard COPYRIGHT This document may not in whole or in part be reproduced copied or disseminated entered into or stored in a computer database or retrieval system or otherwise utilized without the prior written consent of the IAR Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 3 HAR 8 Public Review 2 Foreword Informative This Standard specifies minimum criteria for removing the ammonia charge in conjunction with the decommissioning of closed circuit ammonia refrigeration systems A
15. ce of ammonia and that the expiration date s for use has not been exceeded 5 3 1 9 Determine what procedures shall be followed to remove transfer and or flush ammonia during pump oxtancddecommissioning activities including 5 3 1 9 1 The procedures that shall be followed to heat any components in the system 5 3 1 9 2 The procedures that shall be followed to remove any ammonia or lubricating oil that may accumulate in low points in the system 5 3 1 9 3 The procedures that shall be followed before cutting into and removing equipment components and piping in the system 5 3 1 9 4 The procedures that shall be followed to physically remove equipment components and piping from the facility and or isolate equipment components and piping that will be abandoned in place 5 3 1 10 Determine if any check valves vent valves drain valves isolation valves and or pressure relief valves need to be modified and or installed for the pump out and decommissioning activities Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 13 HAR 8 Public Review 2 5 3 1 11 Determine if any instrumentation such as temperature and pressure gauges need to be modified and or installed for the pump out and decommissioning activities 5 3 1 12 Determine if any insulation needs to be removed to facilitate the purp out ancd decommissioning process 5 3 1 13 Determine if changes are requ
16. d has been obtained from sources believed to be reliable However it should not be assumed that all acceptable methods or procedures are contained in this document or that additional measures may not be required under certain circumstances or conditions The Standards Committee and Consensus Body that approved the Standard were balanced to assure that individuals from competent and concerned interests have had an opportunity to participate The proposed Standard was made available for review and comment for additional input from industry academia regulatory agencies and others The HAR makes no warranty or representation and assumes no liability or responsibility in connection with the use of any information contained in this document Use of and reference to this document by private industry government agencies and others is intended to be voluntary and not binding unless and until its use is mandated by authorities having jurisdiction The IAR does not approve or endorse any products services or methods This document should not be used or referenced in any way which would imply such approval or endorsement Note that the various codes and regulations referenced in this document may be amended from time to time and it should be assumed that the versions referenced herein are the versions of such codes and regulations in effect at the time of the publication of this Standard HAR uses its best efforts to promulgate Standards for the
17. d or procedures e15 Emergency action and or response plan 5 6 2 3 c Pre startup procedures associated with the pusp out and decommissioning activities Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 19 HAR 8 Public Review 2 Section 6 Equipment 6 1 6 1 1 Equipment Requirements The specific consumables tools and equipment that shall be available during the pump out anddecommissioning activities shall be identified during the preparation stage see Section 5 NOTE This equipment may include a Caution tape and or barricades b Additional labels signs and placards c Tank trucks drums and or tanks that can be used to contain and or store ammonia lubricating oil and other chemicals removed from the system d Compressors ammonia pumps or vacuum pumps that can be used to raise lower pressure during these activities e Equipment that can be used to safely apply heat to equipment components and piping during these activities f A supply of inert gas such as nitrogen or air which can be used to flush the lines and equipment components and piping after ammonia has been removed g Additional check valves vent valves drain valves isolation valves and or pressure relief valves that need to be installed to facilitate these activities h Additional instrumentation such as temperature and pressure gauges that need to
18. dditional requirements may be imposed by particular circumstances system design or jurisdictional considerations This document reflects the consensus reached by ammonia refrigeration industry representatives but does not constitute a comprehensive detailed technical manual and should not be used as such For the purposes of this Standard it is assumed that the refrigeration system was designed for the duty that it was to perform that all installed piping and electrical equipment is fully functional and that adequate access is available for the safe removal of the charge Since this document defines the minimum requirements for the decommissioning of closed circuit ammonia refrigeration systems it may not be sufficient to meet other standards and or regulations that are applicable to specific refrigeration systems Experience shows that ammonia is very difficult to ignite and is very stable under normal conditions The ignition point of ammonia is limited to a range of 160 000 ppm to 250 000 ppm This concentration far exceeds the 50 ppm permissible exposure level published by OSHA Ammonia s strong odor alerts those nearby to its presence at levels well below those that present a hazard This self alarming odor is so strong that a person is unlikely to voluntarily remain in an area where ammonia concentrations are hazardous The principal hazard to persons is ammonia vapor since exposure occurs more readily by inhalation than by other
19. decommissioning precautions and general steps writer eperatine procedures have been_written developed see Section 5 4 7 1 1 3 Ensure that training and safety taHsate meetings have been completed see Section 5 5 7 1 1 4 Ensure that regulatory requirements have been met imehidine the Vie te Chee Procedures orhe C hanse Prosedures see Section 5 6 7 1 1 5 Assemble and or install the specific equipment and tools that shall be available during the pump outand decommissioning activities see Section 6 7 1 1 6 Assemble the manpower needed for the pump cut and decommissioning activities NOTE Appendix C Informative contains a sample decommissioning check list that may be used to confirm that the preparations have been completed Pump Outand Decommissioning Activities The precautions and general steps and precautions that will be followed during the pump out and decommissioning activities shall be documented is the w itter eperatine procedures see Section 5 4 These steps typically include 7 2 1 1 Raising lowering pressure on the system components to transfer ammonia to a pump oxut vessel tank truck and or tank NOTE Often ammonia will be removed from the evaporators and the piping manifolds before it is removed from the main vessels in the machinery room Once liquid has been removed from the evaporators and piping a vacuum is often placed on the piping and evaporators to remo
20. e Emergency Planning and Community Right to Know Act EPCRA The Tier I and or Tier II reports shall be updated to reflect any changes in the ammonia inventory which occurred during decommissioning activities Tier I and Tier II forms and instructions may be obtained on line from the US EPA c Facilities are required to submit a Section 313 report Form R for each toxic chemical exceeding a threshold by July 1 in the following year to the US EPA and to the State Emergency Response Commission SERC Form R reporting forms and related guidance may be obtained on line from the US EPA d The Chemical Security Assessment Tool CSAT Top Screen Survey Application User Guide contains instructions on the procedures that shall be followed to update facility information in the CSAT system used by the US Department of Homeland Security DHS 9 4 Removal of Pressure Vessels 94D e If a pressure vessel is removed from service the authority having jurisdiction AHJ shall be notified if required by applicable codes Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 26 HAR 8 Public Review 2 Appendix A Informative Informative References A l HAR Ammonia Data Book A 2 HAR Introduction to Ammonia Refrigeration Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 27 HAR 8 Public Review 2 A
21. etely de gassed before being placed in a sealed non pressure containing lubricant receptacle 8 2 2 2 The disposal of all chemicals including ammonia water solutions shall be in compliance with applicable codes standards and regulations 8 2 2 3 Obtain tracking information such as shipping waybills and endpoint receipts to document the disposal of all chemicals removed from the facility Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 24 HAR 8 Public Review 2 Section 9 Close out 9 1 9 1 1 General Section 5 summarizes the codes standards and regulations that may apply to pep eut and decommissioning activities Once the pyump cut and decommissioning activities are completed the following close out activities shall be completed where applicable Manacementof Change Procedures Updated Facility Documentation FRENGE E PER e EE AE IE EAE TO E activities are ceaipleted ie Pinas Frona net to denen these acthities shallimust be completed Ppa vebes 9 2 4 1 Ensure that facility documentation has been updated See Section 5 6 2 for a list of documentation that may need to be updated 9 2 4 2 Ensure that any action items identified have been addressed and that the resolution of these action items has been documented 9 2 4 3 Ensure that the training associated with the pump out and decommissioning activities
22. geration All rights reserved Reproduction prohibited Page 29 HAR 8 Public Review 2 Preparation Initial Planning Reason s for decommissioning Designation of person s coordinating the decommissioning activities Specify what is being decommissioned Areas of facility to be shutdown Transfer to and or stored location identified Disposal means identified Dismantled or abandoned left in place list Management of Change Procedure s Documentation Requirements Physical properties MSDS SDS IIAR Ammonia Book Data Process flow diagrams amp P amp ID s Facility plan view Pressure relief valves information Emergency Action and or Response Plan Coordination Meeting s Decide to suspend or modify daily operations Identify facility areas to be restricted Identify if site security changes are needed Decide to limit and or control motorized vehicle access Identify accumulation and transfer vessel s Identify tank truck parking and connections Determine labels signs or placards needed Identify inspections and precautions needed Define steps for hose inspections Determine removal transfer and or flush procedures Determine if valves need to be modified and or installed Determine if any instrumentation needs to be modified e g pressure or temperature gauges Determine if insulation
23. ght 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 15 HAR 8 Public Review 2 possibility the sequence of steps shall assure that liquid has been removed from the system component s to be isolated before the last isolation valve is closed 5 4 1 5 2 Precautions that shall be taken to ensure that temperatures do not go below the minimum design temperature of any equipment components and piping during the pump outand decommissioning activities including precautions taken to address the flashing of subcooled liquid ammonia 5 4 1 5 3 Precautions that shall be taken to ensure that the pressure does not go above the maximum allowable pressure of any equipment components and piping during the pump ovt and decommissioning activities 5 4 1 5 4 Precautions that shall be taken to avoid the rapid release of pressure from one portion of the system to another portion of the system 5 4 1 5 5 Precautions that shall be taken to avoid ammonia liquid being released into equipment components and piping that is under vacuum 5 4 1 5 6 Precautions that shall be taken to ensure that the liquid levels stay within safe limits in the vessels during the pump out and decommissioning activities 5 4 1 5 7 Precautions that shall be taken to avoid any excessive vibrations shocks or movement of equipment components and piping in the system 5 3 1 5 8 Precautions taken to ensure that valves wil
24. here may be significant risk of an ammonia release Written Operatine PreceduresDecommissioning Precautions and Steps Weritten_operatine_procedures Specify in writingshalbe develepedte specify the precautions and the general steps that shall be followed during pump out and decommissioning activities the w ritten procedures shatHncludinge as applicable 5 4 1 1 A description or list of the items discussed during coordination meeting s held with personnel who will be directly involved in the pump out and decommissioning activities see Section 5 3 5 4 1 2 References to existing safety programs such as lockout tagout line breaking hot work permit and confined space entry procedures NOTE Facilities in the United States shall comply with applicable OSHA standards which address these safety programs Reference 4 1 4 5 4 1 3 Description of safety systems that will be functional such as ammonia detection systems ventilation systems pressure relief systems and emergency shutdown systems 5 4 1 4 Steps that shall be taken during pump out and decommissioning activities 5 4 1 5 Precautions that shall be taken during pump cvut and decommissioning activities including 5 4 1 5 1 Precautions that shall be taken to prevent trapping liquid ammonia when closing valves to isolate system components or piping Hydrostatic pressure can develop when liquids become trapped with no gases present Whenever this is a Copyri
25. ions For other definitions refer to ANSI IIAR 1 Reference 4 1 1 Decommissioning The permanent deactivation of a closed circuit refrigeration system or part thereof from service including the removing or transferring of the entire ammonia charge from the system or part thereof Pump out er a refrigeration mets or as Career Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 9 HAR 8 Public Review 2 Section 4 References 4 1 Normative References 4 1 1 4 1 2 4 1 3 4 1 4 4 1 5 International Institute of Ammonia Refrigeration IAR ANSI ITAR 1 latest edition Definitions and Terminology Used in IAR Standards International Institute of Ammonia Refrigeration IAR ANSI ITAR 2 latest edition Equipment Design and Installation of Closed Circuit Ammonia Mechanical Refrigerating Systems Occupational Safety and Health Administration OSHA U S Department of Labor 29 CFR Part 1910 119 Process Safety Management of Highly Hazardous Chemicals Occupational Safety and Health Administration OSHA U S Department of Labor Latest Editions 4 1 4 1 29 CFR Part 1910 132 General Requirements Personal Protective Equipment 4 1 4 2 29 CFR Part 1910 133 Eye and Face Protection 4 1 4 3 29 CFR Part 1910 134 Respiratory Protection 4 1 4 4 29 CFR Part 1910 146 Permit Required Confined Spaces 4 1 4 5 29 CFR Part 1910 147 The
26. ired so that the equipment components and piping can be safely accessed 5 3 1 14 Identify the pressure and temperature limitations of the equipment components and piping involved in the pussp out anc decommissioning activities 5 3 1 15 Determine what communication equipment will be required so that key personnel can be readily contacted during these activities 5 3 1 16 Determine what personal protective equipment PPE shall be worn when performing pump oxteand decommissioning activities NOTE The ITAR s Introduction to Ammonia Refrigeration contains a description of personal protective equipment applicable to ammonia that can be adjusted to suit the specific activities performed at the facility and incorperated inte the pump out and Sh S ES 5 3 1 17 Ensure that equipment for quick drenching and flushing of the eyes and body such as eyewash and body showers will be available for immediate emergency use in areas where activities could expose personnel to ammonia 5 3 1 18 Determine how ammonia releases will be detected during the pump out and decommissioning activities Options that shall be considered include the use of fixed ammonia detectors and or portable ammonia detection devices during these activities 5 3 1 19 Determine how equipment components and piping can be shut down and isolated in an emergency during the pump cxt and decommissioning activities and identify the personnel who would respond to these
27. itute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 5 HAR 8 Public Review 2 Table of Contents Section 1 Purpose Section 2 Scope Section 3 Definitions Section 4 References Section 5 Preparation Section 6 Equipment Section 7 Operations Section 8 Ammonia Disposal Section 9 Close out Appendix A Informative References Appendix B Source of All References Informative Appendix C Decommissioning Check List Informative Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 6 HAR 8 Public Review 2 Section 1 Purpose This Standard specifies minimum criteria and procedures for decommissioning of closed circuit ammonia refrigeration systems Section 2 Scope 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 This Standard provides minimum criteria and procedures for the safe removal of an ammonia charge and in conjunction with the decommissioning of closed circuit ammonia refrigeration systems The specific requirements for a particular system shall be considered when applying the minimum requirementsgenerat recommendations expressed in this Standard This Standard refers to those parts of a closed circuit ammonia refrigeration system that are in direct contact with ammonia including components that are temporally connected to the system or system components that are to be decommissioned for example portable pump ovtco
28. l not be inadvertently opened 5 5 5 5 1 or closed during decommissioning activities such as a list of the valves which will be marked or flagged during these activities 5 4 1 6 Steps that shall be taken to shut down and isolate equipment components and piping in an emergency during the pump out and decommissioning activities including the identification of the personnel who would respond to these emergencies Training Additional training shall be provided where necessary to those facility personnel and or contractors performing the pump out and decommissioning activities The training shall include as applicable 5 5 1 1 An overview of the pump out and decommissioning activities 5 5 1 2 A description of the safety health hazards and properties of ammonia lubricating oil and other chemicals involved in the pump out and decommissioning activities including first aid for exposure to these chemicals 5 5 1 3 A review of the items considered during the initial planning stages See Section 5 1 for a list of these items Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 16 HAR 8 Public Review 2 5 5 2 5 5 3 5 5 1 4 A review of the items reviewed during the coordination meeting s See Section 5 2 for a list of these items 5 5 1 5 A review of the operating limits that are applicable such as the expected temperatures pressures and leve
29. ls anticipated during these activities 5 5 1 6 A description of the actions that shall be taken if the operating limits deviate from the expected values 5 5 1 7 A review of the decommissioning precautions and general steps eperating procedures foreach operating phase including the sequence of operations the steps invelved and_the precautions that shall be followed during the pump cut and decommissioning activities see Section 5 4 ReferteSection 54 fora deseriptionof hei Sere Fa eei 5 5 1 8 A review of emergency action and or response operations including the steps that shall be taken to shut down and isolate equipment components and piping in an emergency 5 5 1 9 A review of safety programs such as lockout tagout line breaking hot work permit and confined space entry procedures applicable to these activities Awareness training shall be provided where necessary to all personnel who could be affected by the pamp out and decommissioning activities The awareness training shall include as applicable 5 5 2 1 An overview of the pump out and decommissioning activities including the effect of these activities on the daily operations at the facility 5 5 2 2 A description of the safety health hazards and properties of ammonia lubricating oil and the other chemicals involved in the pump cut and decommissioning activities including first aid for exposure to these chemicals 5 5 2 3 A review of emergency action
30. mp IDs depicting the refrigeration system or subsystem that will be pumped out and decommissioned 5 2 1 3 A facility plan view showing the orientation of the facility and the general location of the ammonia refrigeration system or subsystem that will be pum ped out aacd decommissioned 5 2 1 4 Information describing the location and setpoint of any pressure relief valves installed on equipment components and piping that will be pumped out and decommissioned 5 2 1 5 Emergency action and or response plan for the facility 5 2 2 5 3 5 3 1 i atc orn nani oe be eomideredoahen oreo te E a O nd decompo oA 0i a 5 2 1 6 Information describing the maximum allowable pressure and the minimum design temperature for the equipment components and piping that will be pumped eutancddecommissioned such as manufacturer s data reports Coordination Meeting s Coordination meeting s shall be held with personnel who will be directly involved in the pump cut and decommissioning activities Items that shall be addressed if applicable during the meeting s include 5 3 1 1 Decide whether to suspend and or modify daily operations at the facility during the pump oxt and decommissioning activities 5 3 1 2 Identify areas at the facility that need to be restricted during the pump cxtand decommissioning activities to limit persennel access_to authorized personnel theel oeeo hl a a e da o O a i NOTE
31. mpressors and hoses Unless otherwise noted it is the responsibility of the owner or the owner s representative to meet the objectives of this Standard as they pertain to their particular closed circuit refrigeration system or systems It is permissible for the owner or the owner s representative to delegate this responsibility by contract This Standard shall apply to complete systems that are decommissioned and or to those parts of a system that are decommissioned This Standard shall apply to systems or parts thereof whether they are dismantled and removed or abandoned in place This Standard shall not apply to the shutdown of closed circuit ammonia refrigeration systems that operate periodically or seasonally or are otherwise mothballed periodically whether or not the ammonia charge is isolated or removed In addition this Standard shall not apply to pump dewns orammonia charge removal for system maintenance or servicing This Standard shall not apply to ammonia absorption refrigeration systems Informative material shall never be regarded as a requirement see Notes on the Standard Text inside front cover Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 7 HAR 8 Public Review 2 Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 8 HAR 8 Public Review 2 Section 3 Definit
32. needs to be removed Determine if access changes are needed Identify pressure and temperature limitations Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 30 HAR 8 Public Review 2 Determine communication equipment needed Determine PPE needed Ensure Eyewash Shower equipment is available Determine detection methods during decommissioning activities Determine emergency shutdown and qualified emergency responders Determine ventilation system operations during decommissioning activities Determine disposal compliance requirements Determine manpower requirements Determine if additional training is needed Determine if Emergency Action and or Response plan needs to be modified Contact local Fire Department and LEPC and provide summary of activities Decommissioning Precautions and Steps Description or list of discussion items for to be covered with those directly involved References to existing safety programs e g lockout tagout line breaking hot work permit confined space entry procedures Description of safety systems that will function during activities e g ammonia detection ventilation pressure relief and emergency shutdown Steps that shall be taken during decommissioning activities Precautions that shall be taken during decommissioning activitie
33. ng s items Review of the applicable and anticipated operating limits e g temperatures pressures and levels Description of the actions that shall be taken if the operating limits deviate from the expected values A review of the decommissioning precaution and general steps that shall be followed during the decommissioning activities A review of emergency action and or response operations that include steps for shutdown and isolation A review of safety programs e g lockout tagout line breaking hot work permit confined space entry procedures Awareness Training For all personnel who could be affected by the decommissioning activities An overview of the decommissioning activities and its effects on the daily operations A description of the safety health hazards and properties of ammonia oil and other chemicals including first aid for exposure A review of emergency action and or response procedures including how to initiate an alarm evacuation and release reporting procedures Regular daily or weekly Safety Meetings For all personnel and or contractors involved Review of work activities Review of safety practices Address any concerns Records Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 32 HAR 8 Public Review 2 Training summary sign off sheets
34. ppendix B Informative Sources of All References American National Standards Institute ANSI 11 West 42 Street New York NY 10036 USA www ansi org International Institute of Ammonia Refrigeration ITAR 1001 North Fairfax Street Suite 503 Alexandria VA 22314 USA www liar org Occupational Safety and Health Administration OSHA United States Department of Labor Washington DC 20210 USA www osha gov www dol gov www osha gov tdc United States Environmental Protection Agency EPA Ariel Rios Building 1200 Pennsylvania Avenue NW Washington DC 20460 USA WWW epa OV Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 28 HAR 8 Public Review 2 Appendix C Informative Decommissioning Check List Example Modify Daily C Contact Local Representatives Restrict Access at the Facility Limit or Control Access by Motorized Equipment Tank Trucks Parked near System Labels Signs and Placards Installed Precautions and General Steps Documented Traini Loe ee Regulatory Requirements Met Equioment and Tools Assembled Decommissioning Check List Date Facility Name Location Description of Decommissioning Activities Date Completed Verified By Copyright 2014 International Institute of Ammonia Refri
35. pressure on the system components to transfer ammonia to a vessel tank truck and or tank Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 33 HAR 8 Public Review 2 Use of a vessel s tank truck s and or a tank s for transfer accumulation Safely applying heat to evaporate residual liquid ammonia Using service valves to remove any remaining low point ammonia and or oil Flushing the system or subsystem with an inert gas e g nitrogen to remove residual ammonia vapor purging the gas to water is an option to keep it from discharging directly to the atmosphere Physically removing equipment components or piping following safe work practices e g lockout tagout line breaking hot work permit and confined space entry procedures Ammonia Disposal Ensure removed lubricating oil that might contain residual ammonia is completely de gassed before placing in a sealed non pressure lubricant receptacle Disposal of all chemicals including ammonia water solutions is in compliance with applicable codes standards and regulations Obtain tracking information e g shipping waybills and endpoint receipts of all chemicals removed from the facility Close out Management of Change Procedure s Ensure facility documentation has been Updated Ensure any action items identified have
36. s to prevent trapping liquid Precautions to ensure temperatures do not drop below the minimum design temperature and address flashing of subcooled liquid Precautions to ensure pressures do not exceed the maximum allowable pressure Precautions to avoid rapid release of pressure from one portion of the system to another portion of the system Precautions to avoid liquid being released into equipment components and piping under a vacuum Precautions to assure liquid levels remain within safe limits in the vessels Precautions to avoid any excessive vibration shocks or movement of any part of the system being decommissioned Precautions to ensure valves will not be inadvertently opened or closed during Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 31 HAR 8 Public Review 2 activities e g list of valves involved that will be marked or flagged Steps that shall be taken for emergency shutdown and isolation Training Additional Training For those facility personnel and or contractors who will be performing the decommissioning activities An overview of the decommissioning activities Safety health hazards and properties of ammonia oil and other chemicals involved including first aid for exposure Review of considered initial planning items Review of coordination meeti
37. tricted 5 1 1 5 Location where the ammonia lubricating oil and other chemicals that are to be removed from the system will be transferred to and or stored 5 1 1 6 Means used to dispose of any ammonia lubricating oil and other chemicals removed from the system remain service after the ro E activities are oA 5 1 1 7 A list of the SpecHie efreeration equipment components and piping that will be dismantled or abandoned and left in place shall be developed 5 1 1 8 The Management of Change Procedures erthe ChangePrecedures which are applicable to the shaH be imitiated_to addressthe pump out and decommissioning activities Consult Section 5 62 for a description of these procedures Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 11 HAR 8 Public Review 2 5 2 5 2 1 Documentation Requirements The following documents shall be available when developing the initial plan to pamp eutanddecommission a closed circuit refrigeration system 5 2 1 1 Documents that describe the physical properties and the potential hazards of anhydrous ammonia lubricating oil and other chemicals involved in the pump out and decommissioning activities such as material safety data sheets MSDSs safety data sheets SDSs and the HAR Ammonia Data Book 5 2 1 2 Refrigeration system flow diagrams and or piping amp instrumentation diagrams P a
38. ve residual ammonia vapors Copyright 2014 International Institute of Ammonia Refrigeration All rights reserved Reproduction prohibited Page 22 HAR 8 Public Review 2 NOTE Precautions shall be taken to ensure that residual ammonia vapors are not discharged directly to the atmosphere Options include transferring these vapors to a collection vessel or purging these vapors into water 7 2 1 2 Using vessels tank trucks and or tanks to accumulate any ammonia that is being transferred NOTE Once ammonia has been removed from evaporators and piping the liquid ammonia that has accumulated inside the machinery room vessels can be removed into a tank truck and or tank s 7 2 1 3 Safely applying heat to a system component to evaporate residual liquid ammonia Fuel burning appliances having open flames and that use combustion air from the area near the system shall not be used to evaporate residual ammonia in the system NOTE External heat application options include ambient temperature water provided the ammonia pressure is above 32 F equivalent hot water approximately 180 F low pressure less than 15 psig steam and hot air guns Hot ammonia vapor is ineffective for vaporizing liquid ammonia However depending on the geometry of the equipment components or piping ammonia vapor can effectively displace liquid ammonia 7 2 1 4 Using service valves to safely remove any remaining ammonia and or lubricating oil
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