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  • Redoing calculations if RMP*Comp is updated

    Will RMP*Comp be updated? If so, would I have to redo calculations I might already have made with an earlier version? No, you do not have to redo your work if you have already completed your consequence analyses. RMP*Comp is based on the EPA's Offsite Consequence Analysis Guidance (OCA Guidance)…

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  • Different distances to toxic endpoints with different versions of RMP*Comp

    I've noticed that for certain chemicals, RMP*Comp gives substantially different distances to the toxic endpoint than previous versions. Why? In the current version of RMP*Comp, we have incorporated new chemical-specific distance tables for ammonia, chlorine, and sulfur dioxide. The generic tables are still used for other chemicals (you can see…

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  • Distance to endpoint calculations used by RMP*Comp

    Does RMP*Comp perform some math or modelling in order to arrive at an endpoint distance, or is it simply interpolating from the tables in the EPA's Offsite Consequence Analysis Guidance (OCA Guidance)? RMP*Comp follows the procedures set out in the OCA Guidance . This means that for some scenarios, the…

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  • Can a facility divide a process when assigning program levels?

    My process includes a series of interconnected units, as well as several storage vessels that are co-located. Several sections of the process could qualify for Program 1. Can I divide my process into sections for the purpose of assigning Program levels? No, you cannot subdivide a process for this purpose…

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  • If a stationary source has processes ineligible for Program 1, are all processes ineligible?

    If a stationary source has several processes that are covered under 40 CFR Part 68, and some of those processes have had an accidental release within the past five years (effectively making those processes ineligible for Program 1 status), are the individual processes from which no accidents have occurred also…

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  • If a covered process has an accident, when does it lose eligibility for Program 1 status?

    A process covered under 40 CFR Part 68 is eligible for Program 1 requirements if it meets all of the criteria listed at 40 CFR §68.10(b). Those criteria include a requirement that the process cannot have had an accidental release of a regulated substance that led to offsite death, injury…

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  • Applicability of program levels and prevention program requirements for co-located vessels

    I have a tank with 1,000,000 pounds of toluene diisocyanate (TDI), which is covered under the RMP rule, but not under OSHA PSM. Considered by itself, the TDI would be Program 2 for EPA. The tank, however, is close to equipment that has chlorine above the applicable threshold and is…

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  • Changing from a Program 2 or 3 process to a Program 1 process

    If five years have passed since the last accident involving a covered process, and that process meets the other two requirements identified under 40 CFR §68.10(b) for Program 1 eligibility, could that process become a Program 1 process even if it had previously been identified as a Program 2 or…

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  • Assigning program level 1 if a public receptors is just beyond distance to endpoint

    Our distance to the endpoint for the worst-case release is 0.3 miles. The nearest public receptor is 0.32 miles away. What tools are available to document that the public receptor is beyond the distance to the endpoint so we can qualify for Program 1? The results of any air dispersion…

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  • Process that meets Program 1 requirements and Program 3 applicability

    Program 3 applies to processes in certain NAICS codes as well as any process subject to the OSHA Process Safety Management (PSM) standard, unless the process is eligible for Program 1. If a process meets the requirements of Program 1, but is also in NAICS code 32211 (one of those…

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  • Can a process qualify for Program 1 if it has had an accident?

    A process with more than a threshold quantity of a regulated substance had an accident with off-site consequences three years ago. After the accident, we altered the process to reduce the quantity stored onsite. Now the worst-case release scenario indicates that there are no public receptors within the distance to…

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  • Program level 1 eligibility and accident history

    A process with more than a threshold quantity of a regulated substance had an accident with off-site consequences three years ago. After the accident, we altered the process to reduce the quantity stored on site, although the quantity still exceeds the threshold quantity. Now the worst case release scenario indicates…

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  • Program level 3 applicability and whether states have delegated OSHA programs

    I am a publicly owned facility in a state with a delegated OSHA program. Why are my processes considered to be in Program 3 when the same processes in a state where federal OSHA runs the program are in Program 2? Federal OSHA cannot impose its rules on state or…

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  • Are evacuations and sheltering-in-place considered for Program 1 eligibility?

    A facility performed a worst-case release scenario and determined that there are no public receptors within the endpoints. There are several residences located just outside the endpoint. In reviewing the five year accident history, there were several releases of a regulated substance, in which the residences were notified by the…

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  • RMP*Comp and emergency response

    Can I use RMP*Comp for emergency response? No. It's a planning tool. Many other tools are available for response, including ALOHA . You can learn more by reading CAMEO tools for RMP .

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