What NFPA standards address entry and work in confined spaces?
NFPA currently has two standards that address confined space issues, specifically NFPA 306, Control of Gas Hazards on Vessels, and NFPA 326, Safeguarding Tanks and Containers for Entry, Cleaning, and Repair. NFPA 306 provides the requirements for Marine Chemists to permit entry and work on tanks and confined spaces on vessels or in the shipyard. NFPA 326 deals with entry and work on aboveground and underground tanks, confined spaces, and containers that are not located in shipyards.