# Fortco Plastics, Inc. — Hazardous Materials Safety Interpretation - **operation:** document - **citation:** 06-0029 - **title:** Fortco Plastics, Inc. — Hazardous Materials Safety Interpretation - **source type:** guidance - **agency:** Pipeline and Hazardous Materials Safety Administration - **status:** guidance - **official:** true - **published on:** 2006-02-22 - **effective on:** Not available - **summary:** 06-0029 response to Fortco Plastics, Inc. concerning 178.601. - **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-06-0029.json - **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-06-0029.md - **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-06-0029 - **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2006/060029.pdf **body:** <<>> ..i" 2 200 Mr. Stephen Jetter Ref. No. 06-0029 Fortco Plastics, Inc. 500 Industrial Park Road Portland, IN 47371 Dear Mr. Jetter: This is in response to your letter requesting clarification of the stacking requirements under the Hazardous Materials Regulations (HMR; 49CFR, Parts 171-180). Specifically, you ask whether either stack test method in § 178.606 may be used to comply with Variation 5 in § 178.601(g)(5). The answer is no. The option for using either the stack test method in § 178.606(c)(1) or (c)(2)(ii) applies to periodic retesting only. For design qualification testing, you must use the stacking test prescribed in § 178.601(c)(1). If you wish to use an alternative test method for compliance with Variation 5, you may apply for an approval in accordance with Subpart H of Part 107. I hope this information helpful. Please contact this office should you have additional questions. Sincerely, * Male t Hattie L. Mitchell Chief, Regulatory Review and Reinvention Office of Hazardous Materials Standards 1786016916) 060029 <<>> January 18, 2006 06-0029 Delmer Billings U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration Office of Hazardous Materials Safety 400 7th St., S.W. Washington, DC 20590 Dear Mr. Billings: Fortco Plastics is requesting a clarification on section 178:601 (g) (5) (Selective testing variation V for plastic single packages). Subpart ii of the section calls out the requirement for the stacking test as specified in 178.606. Section 178.606 contains two stacking test methods; the 28 days stack test and the dynamic compression stack test. Can either method be used to comply with the variation V requirement? Thank you for taking the time to clarify this question. Sincere site that Stephen Jetter VP - Engineering MANUFACTURERS OF BLOW MOLDED CONTAINERS - **truncated:** false - **body characters:** 1855