Search for: Search. Process safety management system is a regulation promulgated by the U.S. Occupational Safety and Health Administration (OSHA). 40% ammonia), or any other HHC in threshold quantities. 2004). The majority of PSM employers have threshold quantities of ammonia, chlorine, or formaldehyde. When the system design requires more than 10,000 pounds of ammonia charge, both OSHA and the EPA get interested. Ammonia refrigeration systems that have 10,000 pounds of ammonia (approximately 2,000 gallons) or more are subject to OSHA’s process safety management requirements. Change ), You are commenting using your Facebook account. The Hazard Assessment must identify potential public and environmental receptors that may be affected in the event of an accidental release. This standard has been required since 1994. The following are list of OSHA/EPA programs that need to be implemented regardless of the amount of ammonia in the facility:– Bloodborne Pathogens (29 CFR 1910.1030)– Compressed Gases (29 CFR 1910.101)– Confined Space (29 CFR 1910.146)– Electrical Safety (29 CFR 1910.333)– Emergency Action Plan (29 CFR 1910.38)– Ergonomics (29 CFR 1900.900-945), Emergency Eyewash and Safety Shower (29 CFR 1910.151, ANSI Z358.1) Exit Routes (1910.34, 1910.35, 1910.36, 1910.37)-Fall Protection (29 CFR 1910.22)-Fire Prevention Plan (29 CFR 1910.39)– Powered Industrial Trucks (29 CFR 1910.178)– Hazard Communication (29 CFR 1910.1200)– HAZWOPER (29 CFR 1910.120)– Hearing Conservation Program (29 CFR 1910.95)– Housekeeping Program (29 CFR 1910.38)– Laboratory Standard (29 CFR 1910.1450)– Lockout/Tagout (29 CFR 1910.147)– Machine Equipment Safety and Guarding (29 CFR 1910.212)– Medical Surveillance Program (29 CFR 1910.95, 1910.120)– Personal Protective Equipment (29 CFR 1910.132, 1910.133)– Record Keeping (29 CFR 1910.1904)– Respiratory Protection (29 CFR 1910.134)– Spill Prevention, Control and Countermeasures (40 CFR Part112) Storm Water Pollution Prevention Plan (40 CFR Part122.26)– Superfund Amendments Reauthorization Act (SARA) (40CFRPart 355.30) Used Oil Management Program– Welding and Cutting Safety Program (29 CFR 1910.251 -255)Workplace Security Plan. Appendix A to § 1910.119 - OSHA’s Process Safety Management (PSM) Standard List of Highly Hazardous Chemicals, Toxics and Reactives (Mandatory) This is a listing of toxic and reactive highly hazardous chemicals that present a potential for a catastrophic event at or above the threshold quantity. . Therefore, facilities that want to operate safely and wish to comply with internationally recognized codes and standards should rely on what is called RAGAGEP or (Recognized and Generally Accepted Good Engineering Practices) applicable to ammonia refrigeration systems. McNeil’s PSM experts have worked in ammonia refrigeration facilities across the United States and will help you design and implement a complete PSM program. Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. (TQ amounts vary by chemical) OR A process which involves a flammable liquid or gas on site in one location, in a quantity of 10,000 pounds (4535.9 kg) or more e.g., 10,000 lbs. These clauses describe responsibilities owners and operators have to be diligent in preventing chemical releases. Ten percent by weight of 1,000 pounds is 100 pounds of diborane. This section provides a listing of alternate names for this chemical, including trade names and … General Duty vs. PSM/RMP: Is there a benefit to dropping below the 10,000lb threshold? These are our customers. For ammonia refrigeration the threshold is 10,000 pounds. OSHA Process Safety Management (PSM) Standard List . Resources ... (PSM) regulations. General Duty vs. PSM/RMP: Is there a benefit to dropping below the 10,000lb threshold? ( Log Out /  Many are opting to prevent bumping up against the 10,000lbs ammonia threshold and are evaluating cascade system by combining R717 with CO2 (R744) in system architectures by removing the ammonia circuit of the system from occupied spaces. chemicals stored at their facilities in excess of the PSM Threshold Quantities (PSM-TQ) and employers that are operating facilities that fall within known NAICS codes that commonly have chemicals stored at their facilities in excess of the PSM-TQ. For anhydrous ammonia (R-717), the most commonly used industrial refrigerant, the threshold value is 10,000 pounds, and a PSM program as defined by OSHA Standard 29CFR 1910.119 is required. Traditionally, the concentration at which individuals start to perceive an odor has been determined using threshold detection procedures that involve a forced-choice between blanks and odorant stimuli at varyi… of ammonia in their refrigeration systems, due to the amount of anhydrous ammonia stored in the facility. These lists, though not representative or inclusive for each country and state, are a good basis for understanding what programs a facility should have to operate safely and yet comply with outside agencies or local chapters with jurisdictions over their facility. Give us a call to discuss your training needs. 620.271.0037 First, the quantity in the mixture does not count if the partial vapor pressure of the HHC is less than 10 mm Hg. News . – adhering to industry codes and standards. Management of change 8. • Installation of ammonia detection system ( to activate emergency exhaust fans for continuous ventilation) with properly installed , maintained and strategically located sensors which are the essential element in preserving the safety of employees and products in any cold store facility. PSM and RMP: Ammonia Refrigeration systems containing 10,000 pounds or more of ammonia must comply with OSHA’s Process Safety Management (PSM) of Highly Hazardous Chemicals guidelines and the EPA’s Risk Management Program (RMP) for Chemical Accidental Release Prevention. Applicability of PSM • Wherever the Threshold Quantity (TQ) of the chemicals listed in the PSM std exceeds • For example TQ for Ammonia is 10,000lbs,TQ for Chlorine is 1500lbs (to refer the std for other chemicals) • Flammable liquid or gas greater than 10,000lbs in one location G . “This article published in AAR Newsletter of June 2017 is being reproduced herein with permission of Mr Mehdizadeh , MD of Roxara Engineering , Houston , Tx (USA)”. In order to arrange for training classes in any country, it is advisable that a “train-the-trainer” approach is followed where employers arrange for training of their senior staff to coordinatewith relevant inspection companies in the US. SOP-Example-150×150. Among others, PSM applies to facilities with over 10,000 pounds of anhydrous ammonia contained in a refrigeration system. The RMP threshold for ammonia is 20,000 pounds, but only for solutions where the concentration is above 20%; the OSHA threshold for ammonia solutions is 15,000 pounds for solutions with an ammonia concentration above 44%. What Must a Covered Facility Do? The Clean Air Act of … A careful review of multiple systems must be done to determine the appropriate action to take in the PSM standard. EPA has lower concentrations (e.g., aqueous ammonia) OSHA PSM 5/7/2013 Adopting an OSHA compliant process safety program must be easy for all companies using ammonia refrigeration, and all PSM professionals who help them. Posted on February 26, 2018 by Brian Chapin Several times a year I get a phone call or an email from a client that wants to lower the NH3 inventory below the federal 10,000lb threshold so they are no longer subject to the PSM/RMP rules. OSHA’s New 1% Test for PSM Posted on September 9th, 2016 by Mike Schmidt in Chemical Manufacturing Excellence “OSHA requirements are set by statute, standards and regulations. As stated TRAINING becomes an essential practice for recognition, avoidance, and prevention where a number of methods are recommended and must be available on-site & ondemand.These include classroom, online and self-taught social media based training which has the benefit of access anywhere in the world and can includevariety of areas thus :• Ammonia Safety• Auditing• Effective Operating Procedures• Incident Investigation/RCA• Process Hazards Analysis• Management of Change/PSSR• Mechanical Integrity• Safe Work Practices• OSHA General Safety & Compliance. in the refrigeration system. Thank You for Visiting Our Website You are exiting the Department of Labor's Web server. Mechanical integrity 3. ethanol. ... or if you are modifying a smaller system that will put you over the 10,000 pound Threshold Quantity. Companies that operate, process or store highly hazardous chemicals in excess of threshold quantities set forth in the Environmental Protection Agency (EPA) list of regulated chemicals 40 CFR Part 68 must comply with the Occupational Safety and Health Administration (ASHA) Process Safety Management (PSM) standard 29 CFR 1910.119 and Environmental Protection Agency (EPA) Risk Management … Presented by Sara Willman. Ammonia PSM Threshold; Chemical Threshold Quantity Typical Uses / Sources; Anhydrous Ammonia: 10,000 lbs: Industrial refrigeration: Regardless of whether your refrigeration is covered by this standard, the requirements are recommended practices and thus those a part of industrial ammonia refrigeration applications should be familiar. Odor and lateralization (irritation) thresholds (LTs) for ammonia vapor were measured using static and dynamic olfactometry. quantities of anhydrous ammonia at their principal place of business(s) may fall under the rule requirements for Process Safety Management (PSM)1910.119. The Anhydrous Ammonia Standard (29 CFR 1910.111) addresses the storage and handling of anhydrous ammonia. Second, the 1% test does not apply if the HHC has a mixture concentration associated with its listing. ), Compiling and updating the following information are essential to GDC compliance:• Process Safety Information (PSI) including current P&ID’s(NOTE: A crucial standard to be considered is in IIAR Bulletin 110 -Section 4: Records). • Installing of remote monitoring systems can be a valuable safety tool, as it would cover from detection of leaks and high liquid levels to a change in system pressure and can beanalyzed 24/7/365 by an expert in-house technician. IF THE FACILITY HAS LESS THAN 10,000 lbs – (LIGHTER CHARGE OF AMMONIA)When a facility has less than 10,000 pounds of ammonia charge in its refrigerating system, both OSHA’s PSM and EPA’s RMP use their respective General Duty Clause (GDC) and RAGAGEP getsinvolved to inspect and generate citations . 13. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations.” –Statement on every OSHA letter of interpretation. When a facility has less than 10,000 pounds of ammonia charge in its refrigerating system, both OSHA’s PSM and EPA’s RMP use their respective General Duty Clause (GDC) and RAGAGEP gets involved to inspect and generate citations. Home; About; Blog Subscriptions ← How should I FIX a PSM program? (3,516 US gallons) for Ammonium Hydroxide. ( Log Out /  If your facility has more than the threshold quantity for any chemical designated as regulated, then the RMP program applies to your facility. Our average of twenty two years of experience in ammonia PSM provides our customers with the knowledge and understanding to mitigate regulatory liabilities. Aqueous ammonia is also a regulated substance in the RMP regulation, but only when in concentrations greater than 20%. We tailor our 30 years of PSM expertise to your facility's needs. The 1% test states that any Appendix A HHC in a process contributes to the threshold quantity (TQ) if it is in a mixture at concentrations greater than 1%, and that only the contained amount of the HHC counts toward the TQ, not the entire quantity of … Ammonia Process Safety Management. (While this is the rule that most companies follow, there is some confusion in the wording which suggests that any release meeting or exceeding the RQ must be reported immediately.) Is … OSHA Response: Yes. OSHA considers anhydrous ammonia to be “immediately dangerous to life and health” at a concentration of 300 parts per million (ppm), or 0.03%. These clauses describe responsibilities owners and operators have to be diligent in preventing chemical releases. For refrigeration systems the standard applies to systems that contain 10,000 pounds of ammonia, although multiple systems that are not interconnected, have less than 10,000 pounds each may still be covered … . Contractors • Recommended practices for proper ventilation of plant rooms to manage ammonia leaks , is of crucial importance in the design & safety standards set forth in the IIAR-2-2014 standards. AutoPSM is ammonia PSM software that helps achieve refrigeration safety with process simplicity. This includes both an employer’s recognition of hazards and most importantly the industry’s recognition of hazards! Only the contained amount of the HHC counts toward the TQ, not the entire quantity of the mixture. �?�uZ�?��������ʟ�������k�[B����F�Vڏ��˱^��Ƿ�%vD���$��ܛ���ݦi+?r>�7���m$w;����jd�͢���_�,��o���m���B$\�urǛW��������*!���x����ϟ�������q�L>���g���}Q'Α�Ľ[/����o���~�|L!^A���x�� ����ӵ�1��v��K���_vq�H����輸m[%ULz�1�N��#6��"���� threshold, the EPA requires that you submit a Risk Management Plan. Our training programs feature a problem-based learning approach that provides a collaborative job-focused experience to accelerate skill development and helps develop a holistic understanding of a ammonia Process Safety Management (ammonia PSM) system. Information 2. Wenck has a thorough working knowledge of the PSM /RMP standards and understands Recognized and Generally Accepted Good Engineering Practice (RAGAGEP) for ammonia and a variety of industries. Updating the List of Highly Hazardous Chemicals in Appendix A of the PSM Standard; GCAP is concerned that as part of this re-evaluation, the threshold quantity of Ammonia may be reduced to reflect the lower numbers in NJ (5,200#) or CA (500#) resulting in a significant increase in the number of covered processes. Applicability threshold criteria are different for the two programs. Training 5. The real cost of an OSHA/EPA fine isn’t the check you write → Maximum Intended Inventory (1910.119(d)(2)(i)(C)) Posted on October 18, 2012 by Brian … These provide energy efficiency and are internally piped, insulated & factory wired thus reducing in house labor and eliminating construction of big machinery rooms. ACGIH Threshold Limit Value (TLV) 25 ppm (17 mg/m3) as 8-hour TWA (Time-Weighted Average) ... anhydrous ammonia and able to be used for entry and escape in emergencies. Our web based AutoPSM software makes PSM easy for all our customers. Aqueous ammonia is also a regulated substance in the RMP regulation, but only when in concentrations greater than 20%. Refer to 29 CFR 1910. TAO Compliance – PSM News for Ammonia Refrigeration. The majority of PSM employers have threshold quantities of ammonia, chlorine, or formaldehyde. We provide professional ammonia PSM consulting. Change ), You are commenting using your Twitter account. These new comers need to get familiar with regulatory bodies concerned with worker & public safety such as OSHA (Occupational Safety and HealthAdministration) and the EPA (Environmental Protection Agency).This will ensure that risks are mitigated at proven knowledge levels as employed to industry practitioners. • Instead of traditional stick-built ammonia systems, a low charge ammonia package (modular) skid-mounted units be incorporated. An RMP is a set of documents and procedures that govern the following actions at a facility when that facility has the highly hazardous chemicals in a process in quantities above a Threshold Quantity. This standard was developed to give requirements for the management of hazards associated with processes using highly hazardous chemicals to help assure safe and healthy workplaces. Chemical Name CAS Number Threshold Quantity (TQ) Ammonia solutions (>44% ammonia by weight) 7664-41-7: 15000 pounds: Ammonia, Anhydrous: 7664-41-7: 10000 pounds (OSHA, 2011) Alternate Chemical Names. ( Log Out /  Our spectrum of ammonia refrigeration training is customized to the quick start with no experience to the seasoned operator. PSMWriter Videos . Several times a year I get a phone call or an email from a client that wants to lower the NH3 inventory below the federal 10,000lb threshold so they are no longer subject to the PSM/RMP rules. For ammonia systems over the 10,000 lb. Posted on February 26, 2018 by Brian Chapin Several times a year I get a phone call or an email from a client that wants to lower the NH3 inventory below the federal 10,000lb threshold so they are no longer subject to the PSM/RMP rules. Thus safe workpractices should be clearly communicated and become part of the corporate culture where the focus should continue to be on recognition of safety and health hazards in their workplace. This includes all currently operating systems with refrigerant charges above the threshold limit. 1.1: Chemical Sources of Aqueous Ammonia 1.2: De Minimis Concentrations 1.3: General TRI Reporting Instructions Section 2: Guidance for Reporting Aqueous Ammonia 2.1: Determining Threshold and Release Quantities for Ammonia 2.2: Chemical Sources of Aqueous Ammonia Section 3: CAS Number List of Some Chemical Sources of Aqueous Ammonia ( Log Out /  Two of those more important differences are the requirements to model a Worst-Case and Alternate Case release scenario and to register with the EPA on their CDX (Central Data … To help prevent and/or minimize the consequences of a release of ammonia, High Liner Foods has developed a Process Safety Management (PSM) Program, and a … Ammonia (anhydrous) 7664-41-7: 10,000: Ammonia (conc 20% or greater) 7664-41-7: … With regard to anhydrous ammonia, it is fairly well known that the threshold quantity in RMP is 10,000 lb, while the CalARP threshold is 500 lb (20x lower). ���o��/�����'�]^�?ʔ�-��&��������������D�x�y͋�C�. Change ), You are commenting using your Google account. At this threshold, both agencies require preparedness plans known as OSHA’s PSM (Process Safety Management) and the EPA’s RMP (Risk Management Plan). We tailor our 30 years of PSM expertise to your facility's needs. Specifically, this PSM standard is applicable to ammonia manufacturers and facilities with large ammonia refrigeration systems; it does not apply to retail … Working in the great state of California confuses matters further since one has to also navigate the requirements of the California Accidental Release Prevention (CalARP) Program and Cal/OSHA’s Process Safety Management (PSM) regulation. 5. • Process Hazard Analysis (PHA) with a discussion of potential release scenarios and their impacts. The PSM rule has a limited retail establishment exemption based on federal OSHA’s conclusion that these facilities do not present the … Process Safety Management. Skip to content . stream Ammonia Training Material & Books. The Department of Labor does not endorse, takes no responsibility for, and exercises no control over the linked organization or its views, or contents, nor does it vouch for the accuracy or accessibility of the information contained on the destination server. Prerequisite: NONE “Implementing Process Safety Management for Ammonia Refrigeration Systems” 6th Edition. Additionally OSHA requires that employers keep records on employee training so that whenemployers conduct mandatory audits of the program, any inconsistencies can be detected and corrected. OSHA Process Safety Management (PSM) Standard List . SOP-Example-150×150. To partially reduce the regulatory burden, the following safety services are also recommended for implementation:• Modern cold storage applications call for bigger systems to support increasing low temperature requirements. • The use of analytics technology (sensors and software) to identify trends and patterns is another practice that can be implemented. Although this plan is similar in many ways to your OSHA PSM program, there are unique differences. These lists contain threshold values for each chemical with specific requirements dependant upon amount of chemical on site. The 1% test states that any Appendix A HHC in a process contributes to the threshold quantity (TQ) if it is in a mixture at concentrations greater than 1%. • Recommended practices for proper ventilation of plant rooms to manage ammonia leaks , is of crucial importance in the design & safety standards set … (1,758 US gallons), and 20,000 lbs. The test allows for two important exceptions. 5 0 obj In recent years, OSHA has stepped up adherence to this standard via rigorous inspections enforced by its National Emphasis Program (NEP) on Process Safety Management regulatedindustries which include the eco-friendly ammonia refrigeration facilities. Wenck’s PSM/RMP compliance team has over four years of PSM consultation experience specializing in Ammonia refrigeration PSM/RMP programs. <> In this case, the threshold for an ammonia release, the Reportable Quantity (RQ) is 100 pounds in a 24 hour period and must be reported within one hour of the release. Ammonia Week in Review . Also vulnerable to EPA sanctions are new or expanded facilities that exceed 10,000 lbs. With regard to anhydrous ammonia, it is fairly well known that the threshold quantity in RMP is 10,000 lb, while the CalARP threshold is 500 lb (20x lower). What is PSM? Ammonia PSM/RMP Compliance Audit; Ammonia PSM/RMP GAP Analysis; Personalized Compliance Services; Discussion Group; PSM Safety Videos; Contact GCAP; NH3 Safety Days; Online Courses; 3rd Party Compliance Audits; Dates and Registration; Search Search Close. Airborne volatiles can provoke 2 types of sensations in the nose: the first one being sensations of smell, mediated by the olfactory nerve (CN I), and the second one being sensations of irritancy (typically: burning, tingling, or prickling), mediated primarily by the trigeminal nerve (CN V; Doty et al. The lists will generally be completed in order or for best use of available resources. VENTILATION Local exhaust sufficient to keep ammonia gas below Permissible Exposure Limits. A process is any activity or combination of activities including any use, storage, manufacturing, handling or the on-site movement of highly hazardous chemicals (HHCs) as defined by OSHA and the Environmental Protection Agency. Operating procedures 4. Question 2: A process comprises 10,000 pounds of 50 percent diacetyl peroxide solution. This means that owners and operators of large ammonia systems in excess of 10,000 pounds now have the addedresponsibility and expense of continuous record keeping in preparation for NEP inspections. The threshold quantity for this rule to apply is 10,000 pounds or 1,943 gallons of anhydrous ammonia. Change ), Important Factors in Cold Room Storage Selection, Major Issues in Supply Chain of Fruits and Vegetables, Preventive Maintenance for three major Cold Storage Facilities, Flooring Options for Cold Storage Facilities, In conversation with S K Bose, Managing Director of CAREL ACR Systems India (PVT) LTD, Safety Precautions for Cold Storage Owners, Refrigerated Vehicles and Cold Chain Management, Successful Packaging Solutions of Perishable Food, ANSI/IIAR-2 “Equipment, Design and Installation of Ammonia Mechanical Refrigeration Systems” IIAR Bulletin 109 “IIAR Minimum Safety Criteria for a Safe Ammonia Refrigeration System”, IIAR Bulletin 110 “Start-Up, Inspection and Maintenance of, Ammonia Mechanical Refrigeration Systems”, IIAR Bulletin 114 “Identification of Ammonia Refrigeration, ANSI/ASHRAE -15 “Safety Standards for Refrigeration Systems”, `Implementing above integrated safety solutions provides, Protect Employees, Investments and the Environment, Reduce Likelihood & Severity of Adverse Consequences. This selection of material will allow success in company’s regulatory requirements. g Ammonia Threshold = 10,000# • Cal/OSHA Process Safety Management (PSM) Program g Ammonia Threshold = 10,000# Risk Management Professionals Risk Management Professionals RMMP Key Elements of US EPA RMP & CalARP • Hazard Assessment (potential hazards to the community) g Estimate Potential Release Quantities g Determine Downwind Effects g Evaluate Scenarios Ranging … R A J A S E K A R A N M . CAA 112(r) has 27 chemicals not listed in PSM PSM has about 79 chemicals not listed in CAA 112(r) Thresholds Most CAA 112(r) threshold quantities (TQs) are higher than OSHA’s, with some exceptions Methyl chloride: EPA—10,000 lbs. The Process Safety Management (PSM) standard (29 CFR 1910.119) was established by OSHA. 134 and ANSI: Z9.2 for … Home. 1.1: Chemical Sources of Aqueous Ammonia 1.2: De Minimis Concentrations 1.3: General TRI Reporting Instructions Section 2: Guidance for Reporting Aqueous Ammonia 2.1: Determining Threshold and Release Quantities for Ammonia 2.2: Chemical Sources of Aqueous Ammonia Section 3: CAS Number List of Some Chemical Sources of Aqueous Ammonia Incident investigation 7. Non-routine work authorisations 9. Anhydrous ammonia is the gas or compressed liquid form of ammonia that contains no water. Recorded at Risk Management Professionals' Corporate Headquarters in Irvine, California on Tuesday, August 30, 2017. Industrial Consultants provides customized PSM consultation, development and training services that will help you stay compliant … Clarifying the PSM exemption for atmospheric storage tanks; 2. Process Safety Management/Risk Management Plan (PSM/RMP) Facilities with quantities of hazardous chemicals over OSHA’s threshold levels must comply with OSHA’s Process Safety Management standard. The General Duty Clause (GDC) compliance basically involves the following:• Identification and assessment of process hazards.• Maintaining a safe process system• Minimizing consequences of any ammonia release• MOST IMPORTANT! Chemical Name CAS Number Threshold Quantity (TQ) Ammonia solutions (>44% ammonia by weight) 7664-41-7: 15000 pounds: Ammonia, Anhydrous: 7664-41-7: 10000 pounds (OSHA, 2011) Alternate Chemical Names. News and Discussion Blog on Process Safety Management for Ammonia Refrigeration. GCAP’s Ammonia PSM/RMP Competencies . In addition it is important that the trainers continue to keep their certifications up to date by taking relevant training courses on a periodic or yearly basis. For example, the threshold quantity for hydrogen sulfide under PSM is 1500 pounds, whereas under RMP, the threshold is 10,000 pounds. Process Safety Management Risk Management Program OSHA Compliance … When Is an Ammonia Refrigeration System Covered by OSHA PSM? There is no threshold quantity in the Anhydrous Ammonia Standard. %PDF-1.4 Mechanical Integrity 101 . Refer to 29 CFR 1910. OSHA defines 14 elements of . Randy Williams and GCAP CoolCast team provides education for the industrial ammonia refrigeration operator, steam boiler operator, and PSM safety professional for efficiency, safety, and compliance. x��}]�-���,�Jе��se]k����h�n7���N��y�@@�y�d& � 3��@HV��}��j�}y�"=�:�Ū��ݫ�͏y�.n~�ҿ���z��������㷱����÷��b�G�vr����c}ؗ�r�����?��ޣ��Gl�����������n�����/cޅ���A*�u��|����ý����~��-��6\�}]7v�,K�c����[q�1�7�?�)�f�� Main page of the International Institute of Ammonia Refrigeration (IIAR) The U.S. Occupational Safety and Health Administration (OSHA) established the PSM standard to keep employees safe from highly hazardous chemicals, and facilities with an ammonia threshold of more than 10,000 lb must comply by developing and implementing a PSM plan.