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['Risk Management Program']
['Risk Management Program']
01/02/2024
Copyright 2026 J. J. Keller & Associate, Inc. For re-use options please contact copyright@jjkeller.com or call 800-558-5011.
InstituteToxic Substance ControlRisk Management ProgramRisk Management ProgramEnvironmentalWhat Would you Do QuestionsEnglishAnalysisFocus AreaUSA
Threshold quantity in a process under the RMP rule
Scenario 1: There is a pipeline feeding multiple vessels (4) that total above the threshold quantity. Does this scenario have a threshold quantity of a regulated substance in a vessel involved in a single process?
Yes
No
Scenario 2: There are two vessels that are co-located with the same substance. The total is above the threshold quantity. Does this scenario have a threshold quantity of a regulated substance in a vessel involved in a single process?
Yes
No
Scenario 3: There are two vessels. They are located so they won’t be involved in a single release. They have different substances, each above the threshold quantity. Does this scenario have a threshold quantity of a regulated substance in a vessel involved in a single process?
Yes
No
Click below to see the answers.
Threshold quantity in a process under the RMP rule: Answers
Scenario 1 Answer: Yes. A facility must determine whether the maximum quantity of each substance in a process is greater than the threshold quantity listed. If it is, the facility must comply with the RMP rule for that process. The maximum quantity in a pipeline will usually be the capacity of the pipeline (volume). In most cases, pipeline quantity will be calculated and added to the interconnected vessels.
Scenario 2 Answer: Yes. For co-located vessels that are one process, a facility must determine the maximum quantity for each vessel and sum up the quantities of all such vessels.
Scenario 3 Answer: No. This is two processes and not one. There is no concrete rule for how great the distance should be between separate vessels before a facility does not need to consider the vessels as part of one process. Two vessels at opposite ends of a large warehouse room might have to be considered as one process if the entire warehouse or room could be engulfed in a fire. Two vessels separated by the same distance out of doors might be far enough apart that a fire affecting one would be unlikely to spread to the other. Ask yourself how much of the regulated substance could be released if the worst-case scenario happens.
risk-management-program
Risk Management Program
risk-management-program
Risk Management Program
Threshold quantity in a process under the RMP rule
Scenario 1: There is a pipeline feeding multiple vessels (4) that total above the threshold quantity. Does this scenario have a threshold quantity of a regulated substance in a vessel involved in a single process?
Yes
No
Scenario 2: There are two vessels that are co-located with the same substance. The total is above the threshold quantity. Does this scenario have a threshold quantity of a regulated substance in a vessel involved in a single process?
Yes
No
Scenario 3: There are two vessels. They are located so they won’t be involved in a single release. They have different substances, each above the threshold quantity. Does this scenario have a threshold quantity of a regulated substance in a vessel involved in a single process?
Yes
No
Click below to see the answers.
Threshold quantity in a process under the RMP rule: Answers
Scenario 1 Answer: Yes. A facility must determine whether the maximum quantity of each substance in a process is greater than the threshold quantity listed. If it is, the facility must comply with the RMP rule for that process. The maximum quantity in a pipeline will usually be the capacity of the pipeline (volume). In most cases, pipeline quantity will be calculated and added to the interconnected vessels.
Scenario 2 Answer: Yes. For co-located vessels that are one process, a facility must determine the maximum quantity for each vessel and sum up the quantities of all such vessels.
Scenario 3 Answer: No. This is two processes and not one. There is no concrete rule for how great the distance should be between separate vessels before a facility does not need to consider the vessels as part of one process. Two vessels at opposite ends of a large warehouse room might have to be considered as one process if the entire warehouse or room could be engulfed in a fire. Two vessels separated by the same distance out of doors might be far enough apart that a fire affecting one would be unlikely to spread to the other. Ask yourself how much of the regulated substance could be released if the worst-case scenario happens.
Scenario 1: There is a pipeline feeding multiple vessels (4) that total above the threshold quantity. Does this scenario have a threshold quantity of a regulated substance in a vessel involved in a single process?
Yes
No
Scenario 2: There are two vessels that are co-located with the same substance. The total is above the threshold quantity. Does this scenario have a threshold quantity of a regulated substance in a vessel involved in a single process?
Yes
No
Scenario 3: There are two vessels. They are located so they won’t be involved in a single release. They have different substances, each above the threshold quantity. Does this scenario have a threshold quantity of a regulated substance in a vessel involved in a single process?
Yes
No
Click below to see the answers.
Scenario 1 Answer: Yes. A facility must determine whether the maximum quantity of each substance in a process is greater than the threshold quantity listed. If it is, the facility must comply with the RMP rule for that process. The maximum quantity in a pipeline will usually be the capacity of the pipeline (volume). In most cases, pipeline quantity will be calculated and added to the interconnected vessels.
Scenario 2 Answer: Yes. For co-located vessels that are one process, a facility must determine the maximum quantity for each vessel and sum up the quantities of all such vessels.
Scenario 3 Answer: No. This is two processes and not one. There is no concrete rule for how great the distance should be between separate vessels before a facility does not need to consider the vessels as part of one process. Two vessels at opposite ends of a large warehouse room might have to be considered as one process if the entire warehouse or room could be engulfed in a fire. Two vessels separated by the same distance out of doors might be far enough apart that a fire affecting one would be unlikely to spread to the other. Ask yourself how much of the regulated substance could be released if the worst-case scenario happens.
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Copyright 2026 J. J. Keller & Associate, Inc. For re-use options please contact copyright@jjkeller.com or call 800-558-5011.