Clarifications and Interpretations of the PSM Standard The guidance contained in this appendix is provided for compliance assistance. This appendix contains clarifications agreed to in a settlement agreement dated April 5, 1993, between OSHA, the United Steelworkers of America, the Oil, Chemical and Atomic Workers International Union, and the Building and Construction Trades Department of…...
Managing static electricity during the transfer of flammable liquids is based on the fluid’s conductivity, measured in picosiemens per meter (pS/m). High-conductivity liquids dissipate charge quickly, while low-conductivity liquids (static accumulators) hold onto the charge, creating a spark hazard. The following table summarizes the maximum flow velocities recommended by NFPA 77 and API 2003 to…...
A five-pound CO2 cylinder being stored in a compressed gas storage cage at a power plant failed catastrophically and became a missile. The cylinder destroyed the storage cage, then struck one of six stationary hydrogen storage cylinders used as emergency make-up for the hydrogen supply system. One of the hydrogen cylinders was broken away from…...
Here is a list of questions investigators may ask to determine whether line management deficiencies affected the accident. These questions are based on the seven (7) guiding principles of an SMS. These are not intended to be exhaustive. Investigator(s) should adapt these questions or develop new ones based on the specific characteristics of the accident…....
Meer Corporation (Meer) was cited on January 9, 1995, for serious and non-serious violations of numerous safety requirements for managing hazards associated with processes using highly hazardous chemicals. The standard prescribing the multiple procedures is referred to as process safety management (PSM). The serious citation also includes an item alleging violation of the machine guarding…...
