Chemical Process Safety (PSM/RMP)

Is a double walled tank “passive mitigation”?

Performance of the hazard assessment required under 40 CFR Part 68, Subpart B, includes analysis of both worst-case release scenarios (40 CFR §68.25) and alternative release scenarios (40 CFR §68.28). In each of these analyses, passive mitigation systems may be taken into consideration. If a tank has a “double wall,” does that qualify as “passive…...

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Maintenance requirements for leased tanks

 I use propane as a raw material in my manufacturing process. I lease the tank from the propane supplier. The supplier does all the maintenance. My staff never work on the equipment. What should I do?… Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here...

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States with authority to implement / enforce the risk management program rule

Which states have been granted a delegation of EPA’s authority to implement and enforce the risk management program rule?… Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here...

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What is the definition of a “technically qualified individual”?

Certain exemptions may apply to determine whether more than a threshold amount of a regulated substance is present at a stationary source under 40 CFR Part 68. One exemption is for regulated substances that are “manufactured, processed, or used in a laboratory at a stationary source under the supervision of a technically qualified individual as…...

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After a reportable accident, do I have to revise my RMP?

I recently submitted my five-year RMP update required by section 68.190 (b)(1) and included my accident history for the previous five years. Two months later, we had another reportable accident. Do I have to do anything to revise my RMP?… Membership Required You must be a member to access this content.View Membership LevelsAlready a member?...

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Who is responsible for preparing and submitting an RMP for leased propane tanks?

If an owner of a stationary source leases propane tanks from a gas supplier, who is responsible for preparing and submitting the risk management plan (RMP) addressing the propane tanks?… Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here...

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How does this active mitigation system affect my selection and analysis of an alternative release scenario?

 I run a wastewater treatment plant that is subject to the risk management program regulations in 40 CFR Part 68 for a covered process containing chlorine. A chlorine scrubber system at the plant is designed to prevent any possible releases from reaching a toxic endpoint offsite. How does this active mitigation system affect my selection…...

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Determining frequency of ER coordination activities

The Risk Management Program regulations require owners and operators of stationary sources to coordinate their response needs annually, or more frequently if necessary, with local emergency planning and response organizations (40 CFR §68.93(a)). Are stationary sources responsible for determining if coordination activities should occur more often than annually?… Membership Required You must be a member...

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Are Mechanical Controls Considered Administrative Controls?

To analyze the worst-case release scenario required as part of the hazard assessment at 40 CFR Part 68, Subpart B, the worst-case release quantity is identified as the greatest amount held in a single vessel or pipe, taking into account administrative controls that limit the maximum quantity (40 CFR §68.25(b)). Are mechanical controls such as…...

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Does the distance to endpoint start at the process or stationary source boundary?

Does the “greatest distance to an endpoint” refer to the greatest total distance from the process (e.g., vessel or pipeline) or to the distance beyond the stationary source boundary?… Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here...

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How close must a stationary source be to a weather station in order for that station’s data to be applicable to the stationary source?

How close must a stationary source be to a weather station in order for that station’s data to be applicable to the stationary source?… Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here...

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