DEKRA Process Safety

Some Common Pitfalls in Designing Emergency Pressure Relief Systems - DEKRA Process Safety

Some Common Pitfalls in Designing Emergency Pressure Relief Systems

An emergency pressure relief system (EPRS) is the most frequently employed Basis of Safety or layer of protection optionAn emergency pressure relief system (EPRS) is the most frequently employed Basis of Safety or layer of protection optionfor overpressure safeguarding in the chemical, pharmaceutical and allied industries. It can provide protection to reactors,storage tanks, columns, boilers, dryers and other processing equipment. When designed and operated properly such asystem can be both cost-effective and reliable. Correct specification, operation, maintenance and inspection of the EPRS iscritical for the safety of staff and the environment. However, we continue to see incidents that put some focus on the commonfailures along the lifecycle of the system. In this paper we analyze some of the most common pitfalls in the design of an EPRSand how to overcome them. The paper is based on real cases collected along the years by DEKRA Process Safetyconsultants.