Recent Blog Posts

PSI Explained: Design Codes and Standards Employed

July 11th, 2017

In addition to the technical documentation that we have discussed previously (P&IDs, Ventilation System Design, Relief System Design and Design Basis, etc.), Title 8 CCR §5189(d)(3)(A)(6) and Title 29 CFR §1910.119(d)(3)(i)(F) require that a facility have documentation describing the “Design Codes and Standards Employed” readily available for each PSM chemical process. This documentation serves multiple purposes: […]

Ammonia Detection in Non-Machinery Rooms

May 11th, 2015

Question: Is ammonia detection required in rooms that contain ammonia, but are not classified as machinery rooms? Answer: To answer this question properly, we must first consider the various occupancy classifications and refrigerant restrictions within those classifications. ANSI/ASHRAE 15-2013 Safety Standard for Refrigeration Systems defines two (2) main types of refrigeration systems: Direct Systems and Indirect Systems. Indirect Systems are further divided into […]