Check valves are a common piece of equipment within chemical processes; however, often times these specialized valves go years without any inspection or verification they are performing as designed. In some processes, these valves play a pivotal role in PREVENTING the initiation of an incident and can even be the sole layer of protection for the process deviation. And yet, most check valves sit in the pipe circuits and go un-noticed and un-inspected! This Temporary Instruction (TI) procedure developed by the U.S. Nuclear Regulatory Commission (NRC) for nuclear power plants may be an excellent start for those wishing to establish some means to INSPECT and VALIDATE their “check valves”…