CERTAIN COMPRESSED NATURAL GAS FUEL CONTAINERS, MODEL ALT823D, P/N 1273147, EQUIPPED ON CERTAIN 2003 AND 2004 ORION VII BUSES. THE NVG CONTAINER'S PRESSURE RELIEF DEVICES FAIL TO TIMELY AND FULLY ACTIVATE AS REQUIRED BY FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 304, COMPRESSED NATURAL GAS FUEL CONTAINER INTEGRITY.
SOME TEMPERATURE SENSITIVE TRIGGERS WERE NOT X-RAYED. THESE TRIGGERS COULD CONTAIN INTERNAL VOIDS THAT WOULD MAKE THE TRIGGERS SUSCEPTIBLE TO ADVANCED CREEP CAUSING FALSE ACTIVATION AND VENTING OF THE CNG.
UPON EXPOSURE TO IMPURITIES IN THE NATURAL GAS FUEL IN COLD WEATHER, AN INTERNAL O-RING ON THESE DEVICES CAN BLISTER DURING DECOMPRESSION AFTER FAST-FILL REFUELING RESULTING IN SEAL LEAKAGE.
UPON EXPOSURE TO IMPURITIES IN THE NATURAL GAS FUEL IN COLD WEATHER, AN INTERNAL O-RING ON THESE DEVICES CAN BLISTER DURING DECOMPRESSION AFTER FAST-FILL REFUELING RESULTING IN SEAL LEAKAGE.
UPON EXPOSURE TO IMPURITIES IN THE NATURAL GAS FUEL IN COLD WEATHER, AN INTERNAL O-RING ON THESE DEVICES CAN BLISTER DURING DECOMPRESSION AFTER FAST-FILL REFUELING RESULTING IN SEAL LEAKAGE.
UPON EXPOSURE TO IMPURITIES IN THE NATURAL GAS FUEL IN COLD WEATHER, AN INTERNAL O-RING ON THESE DEVICES CAN BLISTER DURING DECOMPRESSION AFTER FAST-FILL REFUELING RESULTING IN SEAL LEAKAGE.