Recent Blog Posts

P&IDs and MOCs (Part 6)

June 8th, 2021

A great way to maintain P&ID accuracy is to implement an effective management of change (MOC) program. If used correctly, an MOC will initiate modifications to PSM elements that require attention when a facility or process change takes place. Assuming the scope of an MOC includes process equipment, the P&IDs will require amendment. Here is […]

P&IDs and Training (Part 5)

May 25th, 2021

We advocate that P&IDs be included in the training program for operators of PSM processes. Due to the complexity of diagrams, it is important for operators to regularly interact with P&IDs to improve their ability to use them. Here are some suggestions on how to incorporate P&IDs into operator training: Operator Sketch – Give an […]

P&IDs and Emergencies (Part 4)

May 11th, 2021

Preparation is critical for emergency readiness. At a chemical facility, an accurate P&ID is an indispensable tool to aid hazmat responders in making decisions during a crisis. With this in mind, P&IDs must be readily available to responders at all times. Often, chemical leaks can be stopped by closing a downstream isolation valve. The P&ID […]

P&IDs and PHAs (Part 3)

April 27th, 2021

Title 29 CFR 1910.119(d) requires that process safety information be developed prior to conducting a PHA. Therefore, one can conclude that it is unacceptable to complete a PHA when P&IDs are absent. But if having P&IDs available is simply viewed as a formality, the PHA team will not reap the benefits of the drawings. Often […]

P&IDs and SOPs (Part 2)

April 13th, 2021

RMP, PSM, and CalARP regulations require that operating procedures (SOPs) be developed and implemented to provide clear instructions to safely conduct activities involved in a chemical process. The law requires that SOPs be “consistent with the process safety information”. If you accept the premise that P&IDs are the cornerstone of process safety information, then it […]