Recent Blog Posts
The International Institute of Ammonia Refrigeration (IIAR) recently published Low Charge Ammonia Refrigeration Management (ARM-LC) Guidelines, to provide guidance to owners, contractors, and manufacturers of ammonia refrigeration systems with a total inventory of less than 500 lbs of ammonia. Peter Thomas, P.E. played an instrumental role in developing these guidelines that will serve our industry […]
In Part 1 of this series, we examined the purpose of Management of Change and Pre-Startup Safety Review (MOC/PSSR) and how to determine when it is required. In Part 2 of the series, we reviewed the specific requirements of MOC/PSSR. While it may feel like a daunting task, we will now review how to implement Management of […]
In Part 1 of this series, we examined the purpose of Management of Change and Pre-Startup Safety Review (MOC/PSSR) and how to determine when it is required. We will now review the specific requirements of MOC/PSSR. RMP/PSM/CalARP regulations are very similar on the prescriptive requirements for both MOC and PSSR. For simplicity, we will look […]
When I first got into Process Safety Management, Peter Thomas advised me, “If you want to be an expert in anything, be an expert in Management of Change and Pre-Startup Safety Review.” He then added that if you understand MOC/PSSR requirements, you will understand how every other element is affected by a process change. Now […]
Machinery room ventilation systems have long been required by model codes and standards. Dating back to at least the 1967 Uniform Mechanical Code[1], refrigeration machinery rooms have been required to be configured with adequate ventilation in the event of a refrigerant release. While we have written previously about the current ventilation design, control, and testing […]
