Recent Blog Posts

Ammonia Pressure Vessel Nameplates

October 30th, 2017

Pressure vessels are used pervasively in the ammonia refrigeration industry for a variety of different functions. It is required that every vessel be constructed in accordance with ASME B&PV Code Section VIII, Division 1. The quickest way to verify that the design and construction requirements have been met is by inspecting the vessel nameplate. The […]

Respirator Fit Testing

October 17th, 2017

OSHA (Title 29 CFR 1910.134 and Title 8 CCR §5144) requires employers to develop a Respiratory Protection Program and provide respirators to employees “when such equipment is necessary to protect the health of such employee”. Ammonia refrigeration operators and technicians must utilize respirators for a variety of their job functions including, but not limited to: […]

Oil Storage and Machinery Rooms

October 3rd, 2017

The material in this post is outdated. Refer to the 10/7/25 blog post titled “Navigating New Oil Storage Rules: A Look at ANSI/IIAR 6-2025” for current oil storage requirements. Every closed-circuit ammonia refrigeration system utilizes oil for compressor lubrication. Facilities typically maintain new oil onsite in 55-gallon drums. We have observed that it is common […]

PSI Explained: Electrical Supply and Distribution Systems

August 22nd, 2017

CalOSHA’s PSM regulation (Title 8 CCR §5189(d)(3)(A)(9)) uniquely requires that the “information pertaining to the equipment in the process shall include: Electrical supply and distribution systems”. None of the other California or Federal process safety regulations (FedOSHA PSM, USEPA RMP, or CalARP) contain such a requirement. As such, literature describing best practices for implementation of […]

PSI Explained: Safety Systems

August 8th, 2017

Title 8 CCR §5189(d)(3)(A)(8) and Title 29 CFR §1910.119(d)(3)(i)(H) requires that “information pertaining to the equipment in the process shall include: Safety systems (e.g. interlocks, detection or suppression systems)”. At minimum, Safety Systems documentation must identify and summarize all Safety Systems associated with the chemical process. Once developed, this documentation will serve as a useful […]