BUS INDUSTRIES ORION V 1991: FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES

NHTSA Campaign ID Number: 95E005001

Production Dates: 1991-10-01 - 1995-02-01

Manufacturers Involved: BUS & TRUCK SUPPLY CO.

Component: FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES

Potential Number Of Units Affected: 278

Report Initiator: MFR MFR Report

PREMATURE OPENING OF THE THERMALLY ACTUATED PRESSURE RELIEF DEVICES HAS OCCURRED WITHIN A SHORT PERIOD OF TIME AFTER FILLING THE VEHICLE WITH FUEL, EXPELLING COMPRESSED NATURAL GAS TO THE ENVIRONMENT.

IF CNG WERE RELEASED TO THE ENVIRONMENT AND AN IGNITION SOURCE WERE PRESENT, A FIRE COULD RESULT.

MIRADA IS CONDUCTING THE OWNER NOTIFICATION AND REMEDY FOR THIS CAMPAIGN. IN THE INTERIM, BUS OPERATORS ARE REQUESTED TO TAKE THE FOLLOWING PRECAUTIONS WHEN FUELING THESE VEHICLES: "1" FOLLOW THE INSTRUCTIONS OF THE FUEL STATION SUPPLIER TO ENSURE THAT HEAT DOES NOT BUILD UP IN THE FUEL SYSTEM. "2" AFTER FUELING, STORE VEHICLES OUTSIDE. "3" BUSES SHOULD BE CHECKED FOR ANY ABNORMAL DROP IN THE FUEL PRESSURE BEFORE STARTING AFTER REFUELING. "4" TRANSIT BUSES IN SERVICE SHOULD HAVE THE PRESSURE RELIEF DEVICE INSPECTED AND ALSO INSPECT THE RUBBER CAPS THAT ARE INSTALLED ON THE VENTING ARRANGEMENTS ON THE DEVICES. PLEASE CONTACT MIRADA AT 1-612-448-3686.

SYSTEM: FUEL; COMPRESSED NATURAL GAS 'CNG'; PRESSURE RELIEF VALVE/DEVICE. VEHICLE DESCRIPTION: URBAN TRANSIT BUSES EQUIPPED WITH CNG SYSTEMS THAT USE MIRADA PART NOS. B-51298-1 AND B-51300 'BUS INDUSTRIES NOS. 0540832465 AND 050832253' THERMALLY ACTUATED PRESSURE RELIEF DEVICES. NOTE: IF YOUR VEHICLE IS PRESENTED TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND THE REMEDY IS NOT PROVIDED FREE OF CHARGE WITHIN A REASONABLE TIME, CONTACT BUS INDUSTRIES AT 1-315-768-8101. ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-800-424-9393.