# Western Manufacturing Corp. — Hazardous Materials Safety Interpretation **Citation:** 11-0211 **Type / status:** guidance / guidance **Agency:** Pipeline and Hazardous Materials Safety Administration **Effective:** Not stated **Published:** 2011-11-21 11-0211 response to Western Manufacturing Corp. concerning 173.29. ## Document text <<>> U.S. Department 1200 New Jersey Avenue SE of Transportation Washington. DC 20590 Pipeline and Hazardous Materials Safety Administration NOV 2 2 2011 John H. Evanski President Western Manufacturing Corp. 2476 S. Railroad Ave. Fresno, CA 93706 Reference No.: 11·0211 Dear Mr. Evanski: This is in response to your August 26, 2011 letter requesting clarification of the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) as they pertain to shipments of refurbished propane tanks. You state that a California enforcement agent issued your driver a warning for prohibited placarding and marking of your empty UN 1075 propane tank shipments. You ask if the HMR permits the removal of the relevant hazard communication (e.g. markings, placards, etc.) when your propane tank shipments contain only a flammable gas residue. The requirements for empty packages in § 173.29 state that empty packages containing the residue of a hazardous material must be offered and transported in the same manner as when they previously contained a greater quantity of the hazardous material unless the packages are sufficiently cleaned of residue and purged of vapors to remove any potential hazard, or are refilled with a material that is not subject to the HMR to an extent that nullifies any hazard. The methods and limits used for determining what qualifies as "cleaned and purged" under the HMR will vary depending on the properties of the particular hazardous material and type of packaging. In previous interpretations (03-0285 and 00·0117) this office has indicated that a propane cylinder would be considered to be sufficiently cleaned and purged when the vapors in the cylinder are no longer capable of sustaining combustion. Our previous interpretation on the meaning of cleaned and purged remains true and any such determination must be made by the shipper. In the instance you describe, if you determine that the propane tanks have been sufficiently cleaned and purged of vapors to remove any potential hazard, the required hazard communication would not need to be displayed. I hope this satisfies your inquiry. Please contact us if we can be of further assistance. Senior Regulatory Advisor Standards and Rulemaking Division <<>> WESTERN MANUFACTURING CORP. 2476 S. RAILROAD AVENUE FRESNO, CALIFORNIA 93706-5109 PH. (559) 445-9008 FAX (559) 445-0540 August 18, 2011 Mr. Charles E. Betts Director, Office of Hazardous Materials Standards U.S. DOT/PHMSA (PHH-I0) 1200 New Jersey Avenue, SE East Building, 2nd Floor Washington, DC 20590 MC/MX #: 509089 US DOT: 1311621 CA #: 0286094 Company: John Evanski Inc. dba Western Mfg. Corp. Re: Formal Letter of Interpretation Mr. Betts: On 8/10/2011 the California ,Highway Patrol Chowchilla River Inspection Facility issued our driver a warning stating~,tha,t we were in violation of Section 1'Z2.502(a)(1) and 172.303(a) because the load on the truck consisted of vacuumed refurbished propane tanks that were placarded with 1075. Western Mfg. Corp has been in the propane tank refurbishing business for over 11 years and we have operated our own truck since 2005. We haul mostly Hazmat loads that consist largely of used and refurbished propane tanks throughout California as well as interstate. We transport tanks with propane vapor to our location and send them out with a vacuum as some of our customers require their propane tanks, once contaminated with oxygen, to be vacuumed (oxygen free). We evacuate the air in the tank to about 24" to 26" of mercury vacuum. We currently placard all of our :tanks, with or without vacuum, believing they are both considered Hazmat. The majority. of the ta!1ks that we deal with are ASME 120g to 1150g propane tanks. In addition, we have moved small DOT cylinders to larger 20,000g tanks. ## Provenance - Official: Yes - Source: - Source ID: `phmsa` - SHA-256: `b5d893320746d68d78f7df5cbb51c7aee478f4823e59139768527f9a29ad254d` - Retrieved: 2026-08-20T00:59:31.977Z - Exported: 2026-08-22T10:08:33.222Z - Document slug: `phmsa-interpretation-11-0211` ### Source metadata ```json { "materialSubtype": "interpretation", "interpretationArea": "hazardous_materials", "representation": "full_text_from_official_pdf", "companies": [ "Western Manufacturing Corp." ], "individuals": [ "Mr. John H. 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