Revisions to the 2013 version of National Fire Protection Association (NFPA) 52 Vehicular Gaseous Fuel Systems Code will impact upon the design of Compressed Natural Gas (CNG) filling station in the United States, according to a newsletter item published by Las Vegas-based Natural Gas Vehicle Institute (NGVi). NGVi draws attention to a new chapter titled General Fueling Station Requirements, subsection 4.4 Installation Validation, which imposes a Hazard and Operability Analysis (HAZOP).
NGVi says a basic CNG fueling station HAZOP review would include these elements:
- Identify the typical CNG fueling station (all the components combined) to be analyzed.
- Compare the typical CNG fueling station with NFPA 52 and all other codes and standards that govern the design and installation of the station.
- Review industry safety experience as identified in current literature.
- Identify potential hazards of internal and external events leading to potential accidents.
- Analyze potential accident scenarios determined from the hazards analysis.
The end result of the HAZOP analysis is a detailed evaluation of each potentially hazardous condition and recommendations for corrective action.
NFPA develops, publishes, and disseminates more than 300 consensus codes and standards intended to minimize the possibility and effects of fire and other risks. Many NFPA codes and standards appear as mandatory references cited throughout government agency regulations.