49 CFR 179.16 - Tank-head puncture-resistance systems.

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There is 1 rule appearing in the Federal Register for 49 CFR 179. View below or at eCFR (GPOAccess)
§ 179.16 Tank-head puncture-resistance systems.
(a) Performance standard. When the regulations in this subchapter require a tank-head puncture-resistance system, the system shall be capable of sustaining, without any loss of lading, coupler-to-tank-head impacts at relative car speeds of 29 km/hour (18 mph) when:
(1) The weight of the impact car is at least 119,295 kg (263,000 pounds);
(2) The impacted tank car is coupled to one or more backup cars that have a total weight of at least 217,724 kg (480,000 pounds) and the hand brake is applied on the last “backup” car; and
(3) The impacted tank car is pressurized to at least 6.9 Bar (100 psig).
(b) Verification by testing. Compliance with the requirements of paragraph (a) of this section shall be verified by full-scale testing according to appendix A of this part.
(c) Alternative compliance by other than testing. As an alternative to requirements prescribed in paragraph (b) of this section, compliance with the requirements of paragraph (a) of this section may be met by installing full-head protection (shields) or full tank-head jackets on each end of the tank car conforming to the following:
(1) The full-head protection (shields) or full tank-head jackets must be at least 1.27 cm (0.5 inch) thick, shaped to the contour of the tank head and made from steel having a tensile strength greater than 379.21 N/mm2 (55,000 psi).
(2) The design and test requirements of the full-head protection (shields) or full tank-head jackets must meet the impact test requirements in Section 5.3 of the AAR Specifications for Tank Cars (IBR, see § 171.7 of this subchapter).
(3) The workmanship must meet the requirements in Section C, Part II, Chapter 5, of the AAR Specifications for Design, Fabrication, and Construction of Freight Cars (IBR, see § 171.7 of this subchapter).
[Amdt. 179-50, 60 FR 49077, Sept. 21, 1995, as amended by Amdt. 179-50, 61 FR 33255, June 26, 1996; 66 FR 45390, Aug. 28, 2001; 68 FR 75759, Dec. 31, 2003]

Title 49 published on 2013-10-01

The following are only the Rules published in the Federal Register after the published date of Title 49.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2013-10-02; vol. 78 # 191 - Wednesday, October 2, 2013
    1. 78 FR 60745 - Hazardous Materials: Minor Editorial Corrections and Clarifications (RRR)
      GPO FDSys XML | Text
      DEPARTMENT OF TRANSPORTATION, Pipeline and Hazardous Materials Safety Administration
      Final rule.
      Effective date: October 1, 2013. The incorporation by reference of certain publications listed in the rule was approved by the Director of the Federal Register as of January 7, 2013.
      49 CFR Parts 107, 130, 171, 172, 173, 174, 177, 178, 179, and 180

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United States Code

Title 49 published on 2013-10-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 49 CFR 179 after this date.

  • 2013-11-05; vol. 78 # 214 - Tuesday, November 5, 2013
    1. 78 FR 66326 - Hazardous Materials: Rail Petitions and Recommendations To Improve the Safety of Railroad Tank Car Transportation (RRR)
      GPO FDSys XML | Text
      DEPARTMENT OF TRANSPORTATION, Pipeline and Hazardous Materials Safety Administration
      Advance Notice of Proposed Rulemaking (ANPRM), extension of comment period.
      The comment period for the ANPRM closing on November 5, 2013 is extended until December 5, 2013. To the extent possible, PHMSA will consider late-filed comments during the next stage of the rulemaking process.
      49 CFR Parts 173, 174, 178, 179, and 180