Recent Blog Posts

Ammonia Week in Review | June 27, 2025

June 27th, 2025

Ammonia Heats Up in this week’s edition of the Ammonia Week in Review… Ammonia Leak at Tuem Ice Factory Sparks Panic, Swift Response Averts Disaster – On reaching the site, firefighters detected ammonia gas—commonly used in ice manufacturing—spread across the area. […keep reading] Blythe Ammonia Leak Contained – Hazmat crews Friday are investigating an anhydrous ammonia leak that […]

PSI Explained: Relief System Design and Design Basis

June 24th, 2025

This is an update to a blog that was originally posted on 6/13/17. You can read the original blog here. Relief System Design and Design Basis is one of the most commonly inspected components of Process Safety Information (Title 8 CCR §5189(d)(3)(A)(4) and Title 29 CFR §1910.119(d)(3)(i)(D)). This documentation, when prepared correctly, will describe the […]

Relief Valve Piping System Design Scenario

May 13th, 2025

This is an update to a blog that was originally posted on 1/24/17. You can read the original blog here. One often overlooked aspect of a relief valve discharge termination piping system is the scenario that was used as the basis of the piping design. Most designers understand that termination piping must be sized so […]

Ammonia Week in Review | April 18, 2025

April 18th, 2025

Repeats and Fines in this week’s edition of the Ammonia Week in Review… Second Ammonia Leak in Six Years Forces Arena Shutdown in Port Alberni – This is the second time in six years that the chiller has suffered a “catastrophic failure,” according to city officials. […keep reading] Ammonia Leak Happens at Tyson Foods Poultry Plant – All workers […]

Relief Valve Replacement (Dual Assembly)

April 15th, 2025

This is an update to a blog that was originally posted on 3/10/15. You can read the original blog here. Question: Do both relief valves on a dual assembly have to be replaced every five (5) years, or just the relief valve that has been subject to system pressure? Answer: Most pressure vessels in an […]