Recent Blog Posts

Determining Compressor Relief Valve Required Capacity

July 22nd, 2025

This is an update to a blog that was originally posted on 10/14/14. You can read the original blog here. Question: What is the proper procedure for selecting the pressure relief valve capacity for a positive displacement compressor? Answer: ANSI/IIAR 2-2021 §8.2.2.2 addresses this very question. Furthermore, Appendix E (Informative) of that same document gives […]

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 […]

Ammonia Week in Review | May 30, 2025

May 30th, 2025

No Harm, No Foul in this week’s edition of the Ammonia Week in Review… Chemical Leak at Pasadena Plant Facility Posed no Threat to Community – In a statement Thursday afternoon, Ineos Styrolution said the leak was isolated and posed no threat to the surrounding community. Officials had issued a precautionary onsite shelter-in-place while identifying the source of […]

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 | May 9, 2025

May 9th, 2025

Ammonia Takes A Stroll Downtown in this week’s edition of the Ammonia Week in Review… Ammonia Leak at Riverfront Contained After Overnight Response – Fire apparatus from Station 1, located downtown at 44 W. Riverside, encountered the smell of ammonia outside of the structure housing the ice ribbon’s mechanical room as well as an alarm indicating the same. […keep […]