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Search Results   Report Date : November 21, 2009 at 08:09 AM NHTSA Action Number : PE02071 N/A NHTSA Action Number : PE02071 NHTSA Recall Campaign Number : N/A Make / Models :         Model/Build Years:          FORD / CROWN VICTORIA     1996-2003 Manufacturer : FORD MOTOR COMPANY Component : FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY Date Investigation Opened : October 1, 2002 Date Investigation Closed : January 27, 2003 Summary: AN EXPLOSION OF A COMPRESSED NATURAL GAS (CNG) TANK SHOULD NOT BE ABLE TO OCCUR, AS THE TANK IS FITTED WITH A PRESSURE RELIEF DEVICE (PRD). THIS PRD SHOULD RELEASE THE CNG IN THE TANK, PRIOR TO THE PRESSURE REACHING THE TANK BURST PRESSURE. THE PRD DID NOT RELEASE IN THE SUBJECT WISCONSIN POLICE CRUISER EXPLOSION. NHTSA HAS RECOVERED THE PRD VALVE FROM THE TANK THAT EXPLODED AND TESTING WILL BE NECESSARY TO ESTABLISH WHY THIS TANK SAFETY VALVE DID NOT RELEASE IN THE VERY HIGH TEMPERATURE FIRE THAT OCCURRED IN THE POLICE CRUISER. THERE IS ONLY THE SINGLE KNOWN EVENT, BUT DUE TO THE CATASTROPIC FORCE OF SUCH AN EXPLOSION AND THE POTENTIAL FOR INJURY AND LOSS OF LIFE, THIS INVESTIGATION IS BEING UPGRADED. Check to Request Research. Submit below.