I've been informed that under NFPA 86, a manual shut-off valve (MSOV) is required at the inlet of a fuel train. However, I'm unsure about the specific requirements for this valve. I assume it must be lockable to comply with lock-out/tag-out (LOTO) procedures and should be non-sparking for safety. But beyond that, I haven't found clear specifications in the NFPA 86 text itself.
According to the National Board of Boiler and Pressure Vessel Inspectors:
Does anyone have more insight into what standards or best practices apply to MSOVs in this context? Are there UL, FM, or other third-party certifications typically required?
According to the National Board of Boiler and Pressure Vessel Inspectors:
Does anyone have more insight into what standards or best practices apply to MSOVs in this context? Are there UL, FM, or other third-party certifications typically required?
