Recent Blog Posts
Summary In May 2021, a three-inch strip of tarp was sucked into a lower bunker fan for a postcooler room. Two fan blades broke and flew into the bunker evaporator coil, resulting in a release of approximately 4,600 lbs of ammonia. Incident Description The postcooler room is equipped with a bunker that contains two evaporator […]
This is an update to a blog that was originally posted on 8/4/15. You can read the original blog here. Most people who have worked around the ammonia refrigeration industry for any period of time recognize the importance that strainers play in the proper operation and maintenance of an ammonia refrigeration system. Typically located upstream […]
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 […]
Summary In May 2019, ammonia began leaking from a suction regulator installed on the roof of a facility. The incident resulted in seven reported injuries and one fatality. The leak calculations determined that approximately 12 lbs of ammonia was released before the valve was isolated. Incident Description One of the eight bolts holding the suction […]
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 […]