Girard Equipment, Inc. — Hazardous Materials Safety Interpretation

Page 1202. U.S.Department of Transportation Washington, D.C. 400 Seventh Street, S.W. 20590 Research and Special Programs Administration APR 20 1998 Mr. John Freiler Engineering Manager Girard Equipment, Inc. 1004 Route 1 Rahway, NJ 07065 Dear Mr. Freiler: This is in response to your letter requesting clarification of the venting requirements for DOT 407 and DOT 412 tanks under the Hazardous Materials Regulations (HMR: 49 CFR Parts 171-180). Your questions are paraphased and answered below: Q1. Does the HIMR require American Society Mechanical Engineers (ASME) """ stamped pressure relief devices on DOT 407 or DOT 412 cargo tank motor vehicles? Al. The answer is no. The intent of the HMR is not to require ASME "V" stamped pressure 1221: relief devices on DOT 407 or DOT 412 cargo tanks. The provisions specified in § 178.345-10 are the applicable requirements for pressure relief devices used on a DOT 407 or DOT 412 cargo tank. These provisions do not preclude use of pressure relief devices certified to the ASME. 02. Does the HIMR require an ASME pressure relief device in addition to the devices specified in 178.345-10? 1 A2. The answer is no. Section 178.345-10 does not require the use of an ASME "V" stamped pressure relief device in addition to the devices specified in the HMR. I hope this information is helpful. Please contact this office if you require additional assistance. Sincerely, Hathe 2. mitthelt Hattie L. Mitchell, Chief Regulatory Review and Reinvention : Office of Hazardous Materials Standards#

Page 2Posten 7il: 178,347 GIRARD EQUIPMENT INC. SC: 324 D.O.T. REGISTERED TANK COMPONENT MANUFACTURER REG. NO. CT-0035. 1004 ROUTE 1, 732-382-4600 • FAX 732-382-4650 • WATTS 1-800-526-4330 RAHWAY, NEW JERSEY 07065 P.O. BOX 302-B November 13, 1997 Office of Hazardous Materials Standards Edward Mazzullo DHM-10 Research and Special Programs Administration U.S. Department of Transportation DOT- 407-35 psE f 400 Seventh St. S.w. Washington DC 20590 greeter Dear Mr. Mazzullo; The following is a request for interpretation of 49CFR $178.347- 1 (d) DOT-407 and DOT-412 tanks. and $178.348-1 (e) as it applies to venting requirements for At the public meeting held on March 24 & 25, 1993 with RSPA in the Ranuilding in Paint time As ate minated fe Alan I. Roberts, at that Office of Hazardous Material Safety, that it was not the intent of requirements of the DOT code superseded the requirements of the the DOT code to require ASME-type venting and further more that the ASME code when it comes to tank truck venting. However,, it remains unclear if the DOT code requires an ASME vent in addition to the DOT venting. It does not agown trut net 178-345-10 interpretation, please fell free to call or write me at the above have any questions regarding this request address. Sincerely, ASME-CERTified • John Freiler Engineering Manager ASME-conformance GIRARD EQUIPMENT, INC. 178.345-1#

Page 3Fold Girard Equipment Inc. D.O.T. REGISTERED TANK COMPONENT MFG. • REG. NO. CT-0035 P.O. Box 302-B, 1004 Route 1, Rahway, NJ 07065 Office of Mr. Edward DHM-10 Research a U.S. Depar 400 Sevent Washington#