INSPECTION &
MAINTENANCE BULLETIN
ARI 1108 & HP1108
Safety Relief Valve
These instructions are applicable to the following models:
ARI 1108
ARI HP1108
Only facilities with AAR Activity Code C5 are certified to recondition, repair, retest and qualify
tank car safety relief valves. Personnel performing inspection and test must be certified Level I
per AAR Manual of Standards and Recommended Practices, M-1002, Appendix T, 1.4.3.
American Railcar Industries, Inc.