# Regulus search export - Query: `56 FR 11` - Source type: All - Part: All - Source: All - Status: All - Jurisdiction: All - Collection: All - Incident class: All - Sort: relevance - Date from: Any - Date to: Any - As of: Current corpus - Results: 17 - Exported: 2026-08-24T21:27:03.651Z ## 1. NTSB Safety Recommendation P-88-001 **Citation:** P-88-001 **Type / status:** guidance / guidance **Agency:** National Transportation Safety Board **Effective / published:** 1988-05-10 / 1988-05-10 THE NTSB RECOMMENDS THAT THE RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION: ESTABLISH, BASED ON KNOWN TOXICOLOGICAL DATA, A MAXIMUM ALLOWABLE CONCENTRATION OF HYDROGEN SULFIDE IN NATURAL GAS PIPELINE SYSTEMS, AND AMEND 49 CFR PART 192 TO REFLECT THIS DETERMINATION. ### Provenance - Official: Yes - Source: - Source ID: `ntsb-pipeline` - SHA-256: `2f4f46cb157e4feb6f9724ad80e690a4c137d9541ad2743dad23c09112ea7c2d` - Retrieved: 2026-08-20T04:57:24.741Z - Document slug: `ntsb-recommendation-p-88-001` - Related records: 1 ## 2. NTSB Safety Recommendation P-88-002 **Citation:** P-88-002 **Type / status:** guidance / guidance **Agency:** National Transportation Safety Board **Effective / published:** 1988-05-10 / 1988-05-10 THE NTSB RECOMMENDS THAT THE RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION: REVISE 49 CFR PART 191 TO REQUIRE THAT PIPELINE OPERATORS REPORT ALL INCIDENTS IN WHICH CONCENTRATIONS OF HYDROGEN SULFIDE IN EXCESS OF THE MAXIMUM ALLOWABLE CONCENTRATION ARE INTRODUCED INTO PIPELINE SYSTEMS THAT TRANSPORT NATURAL GAS INTENDED FOR DOMESTIC OR COMMERCIAL PURPOSES. ### Provenance - Official: Yes - Source: - Source ID: `ntsb-pipeline` - SHA-256: `03ed71f352af5273be80d0f1397d09a7c4c7fc1fd1739ad10275535445c4a5d9` - Retrieved: 2026-08-20T04:57:24.741Z - Document slug: `ntsb-recommendation-p-88-002` - Related records: 1 ## 3. NTSB Safety Recommendation P-88-003 **Citation:** P-88-003 **Type / status:** guidance / guidance **Agency:** National Transportation Safety Board **Effective / published:** 1988-05-10 / 1988-05-10 THE NTSB RECOMMENDS THAT THE RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION: REQUIRE GAS PIPELINE OPERATORS TO INSTALL ON THEIR SYSTEMS EQUIPMENT CAPABLE OF AUTOMATICALLY DETECTING AND SHUTTING OFF THE FLOW OF GAS WHEN THE MAXIMUM ALLOWABLE CONCENTRATIONS OF HYDROGEN SULFIDE-CONTAMINATED GAS ARE EXCEEDED. ### Provenance - Official: Yes - Source: - Source ID: `ntsb-pipeline` - SHA-256: `1238cdfe43384e7a40114b87f8e80fc96511aaf1001cf6627e7c657b7c949726` - Retrieved: 2026-08-20T04:57:24.741Z - Document slug: `ntsb-recommendation-p-88-003` - Related records: 1 ## 4. Approval of non-domestic chemical analyses and tests. **Citation:** 49 CFR 173.300b **Type / status:** regulation / historical **Agency:** Pipeline and Hazardous Materials Safety Administration **Effective / published:** 2001-10-01 / Not stated (a) Any person who manufactures cylinders outside the United States may apply to the Department for approval to have the chemical analyses and tests of those cylinders required by part 178 of this subchapter performed outside the United States for the purpose of qualifying them for use in the transp ### Provenance - Official: Yes - Source: - Source ID: `govinfo-cfr` - SHA-256: `62eca553a13db5169ab6772cfd947decf90355196d64be23d4e504d9cb8a40cc` - Retrieved: 2026-08-13T06:37:25.439Z - Document slug: `49-cfr-173-300b` - Related records: 8 ## 5. Approval of independent inspection agency. **Citation:** 49 CFR 173.300a **Type / status:** regulation / historical **Agency:** Pipeline and Hazardous Materials Safety Administration **Effective / published:** 2001-10-01 / Not stated (a) Any person who (1) does not manufacture cylinders for use in the transportation of hazardous materials and (2) is not directly or indirectly controlled by any person or firm which manufactures cylinders for use in the transportation of hazardous materials, may apply to the Department for approva ### Provenance - Official: Yes - Source: - Source ID: `govinfo-cfr` - SHA-256: `391dbedfa0ff7dda32ca1aa897b612d88c23e7f1ea8d47478ca74afa8b96c68d` - Retrieved: 2026-08-13T06:37:25.439Z - Document slug: `49-cfr-173-300a` - Related records: 16 ## 6. Use of Specification IM portable tanks. **Citation:** 49 CFR 173.32c **Type / status:** regulation / historical **Agency:** Pipeline and Hazardous Materials Safety Administration **Effective / published:** 2000-10-01 / Not stated (a) No person may offer a hazardous material for transportation in an IM portable tank except as authorized by this subchapter. (b) Except as otherwise provided in this subpart, an IM portable tank may not be used for the transportation of a hazardous material unless it meets the requirements of th ### Provenance - Official: Yes - Source: - Source ID: `govinfo-cfr` - SHA-256: `55a7c01661e35fbe8931593c56cde3532834d018628f4db2842abb78bb9f7310` - Retrieved: 2026-08-13T06:37:23.437Z - Document slug: `49-cfr-173-32c` - Related records: 21 ## 7. Termination of approval. **Citation:** 49 CFR 173.300c **Type / status:** regulation / historical **Agency:** Pipeline and Hazardous Materials Safety Administration **Effective / published:** 2001-10-01 / Not stated (a) The Associate Administrator may terminate an approval issued under § 173.300a or § 173.300b of this subpart if he determines: (1) That information upon which approval was based is fraudulent or substantially erroneous; (2) That the holder has not complied with subchapter C of this chapter; (3 ### Provenance - Official: Yes - Source: - Source ID: `govinfo-cfr` - SHA-256: `60d5958fa02c4b026c3c724afb45e18c88ebf8e05c75282fb4ee98690c147fe3` - Retrieved: 2026-08-13T06:37:25.439Z - Document slug: `49-cfr-173-300c` - Related records: 3 ## 8. Required markings. **Citation:** 49 CFR 178.358-5 **Type / status:** regulation / historical **Agency:** Pipeline and Hazardous Materials Safety Administration **Effective / published:** 2013-10-01 / Not stated (a) Markings must be as prescribed in § 178.3. (b) Specification marking on the outside of each overpack must be as follows: “USA-DOT-21PF-1”, “1A”, “1B”, or “2”, as appropriate. (1) For Specifications 21PF-1 and 21PF-2 only, if the inner shell is constructed of stainless steel, additional marking ### Provenance - Official: Yes - Source: - Source ID: `govinfo-cfr` - SHA-256: `4e0b248b2422c053ddbfcced1f7741e5ba44d26ef39c37d31bc73316121a1670` - Retrieved: 2026-08-12T01:41:52.959Z - Document slug: `49-cfr-178-358-5` - Related records: 0 ## 9. Public docket room. **Citation:** 49 CFR 107.9 **Type / status:** regulation / historical **Agency:** Pipeline and Hazardous Materials Safety Administration **Effective / published:** 2001-10-01 / Not stated There is established in the RSPA offices at 400 7th Street, SW., Washington, DC, a public docket room in which there is available for public inspection and copying: (a) Copies of notices of proposed rulemaking issued by the RSPA or its predecessor agency, including advance notices, together with th ### Provenance - Official: Yes - Source: - Source ID: `govinfo-cfr` - SHA-256: `47a84e53447ba55ef22fc5055bd0e59f93afcb9f17a31d0167c99933be3914fc` - Retrieved: 2026-08-13T06:37:25.439Z - Document slug: `49-cfr-107-9` - Related records: 1 ## 10. Materials of construction and other requirements. **Citation:** 49 CFR 178.356-2 **Type / status:** regulation / historical **Agency:** Pipeline and Hazardous Materials Safety Administration **Effective / published:** 2013-10-01 / Not stated (a) Phenolic foam insulation must be fire-resistant and fabricated in accordance with USDOE Material and Equipment Specification SP-9, Rev. 1 and Supplement (IBR, see § 171.7 of this subchapter), which is a part of this specification. (Note: Packagings manufactured under USAEC Specification SP-9 and ### Provenance - Official: Yes - Source: - Source ID: `govinfo-cfr` - SHA-256: `4065381ce726a8b7ec4112ad02faa5b3afd121a4e38be564d38709ddb4b7d0d2` - Retrieved: 2026-08-12T01:41:52.959Z - Document slug: `49-cfr-178-356-2` - Related records: 0 ## 11. NTSB Safety Recommendation P-11-009 **Citation:** P-11-009 **Type / status:** guidance / guidance **Agency:** National Transportation Safety Board **Effective / published:** 2011-09-26 / 2011-09-26 TO THE PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION: Require operators of natural gas transmission and distribution pipelines and hazardous liquid pipelines to ensure that their control room operators immediately and directly notify the 911 emergency call center(s) for the communities and jurisdictions in which those pipelines are located when a possible rupture of any pipeline is indicated. (Supersedes Saf ### Provenance - Official: Yes - Source: - Source ID: `ntsb-pipeline` - SHA-256: `1e9c9ea97229525e4711e685abd3e776ea8d1519afb320226842cab724776a48` - Retrieved: 2026-08-20T04:57:24.741Z - Document slug: `ntsb-recommendation-p-11-009` - Related records: 13 ## 12. NTSB Safety Recommendation P-04-007 **Citation:** P-04-007 **Type / status:** guidance / guidance **Agency:** National Transportation Safety Board **Effective / published:** 2004-11-04 / 2004-11-04 The National Transportation Safety Board makes the following safety recommendations to the Research and Special Programs Administration: Revise the emergency response planning requirements in the pipeline safety regulations to include coordination with electric and other utilities that may need to respond to a pipeline emergency. ### Provenance - Official: Yes - Source: - Source ID: `ntsb-pipeline` - SHA-256: `2dde4049e87a261cc2668c47be6d11dbc85580706a16cfc1a7ea16dfc49c2d69` - Retrieved: 2026-08-20T04:57:24.741Z - Document slug: `ntsb-recommendation-p-04-007` - Related records: 4 ## 13. NTSB Safety Recommendation P-87-026 **Citation:** P-87-026 **Type / status:** guidance / guidance **Agency:** National Transportation Safety Board **Effective / published:** 1987-09-09 / 1987-09-09 THE NTSB RECOMMENDS THAT THE OFFICE OF PIPELINE SAFETY: OBTAIN SUFFICIENT DATA ON LOW FREQUENCY, ELECTRIC RESISTANCE WELDED PIPE AND DETERMINE IF ITS CONTINUED USE PRESENTS AN UNREASONABLE HAZARD TO PUBLIC SAFETY AND TAKE APPROPRIATE REGULATORY ACTION FOR IDENTIFIED DEFICIENCIES. ### Provenance - Official: Yes - Source: - Source ID: `ntsb-pipeline` - SHA-256: `cb229a7bc0fc4be5648fa4c3b3d822677e354f9cd53d9f03b35821a18835e469` - Retrieved: 2026-08-20T04:57:24.741Z - Document slug: `ntsb-recommendation-p-87-026` - Related records: 1 ## 14. NTSB Safety Recommendation P-02-004 **Citation:** P-02-004 **Type / status:** guidance / guidance **Agency:** National Transportation Safety Board **Effective / published:** 2002-10-11 / 2002-10-11 The National Transportation Safety Board therefore makes the following safety recommendation to the Pipeline and Hazardous Materials Safety Administration (Originally issued to RSPA): Develop and issue guidance to pipeline operators on specific testing procedures that can (1) be used to approximate actual operations during the commissioning of a new pumping station or the installation of a new relief valve, and (2) b ### Provenance - Official: Yes - Source: - Source ID: `ntsb-pipeline` - SHA-256: `439a70ea80379a7f560db0a8bc6362b301cbc1f58ac915ae49b42be2c7f064d4` - Retrieved: 2026-08-20T04:57:24.741Z - Document slug: `ntsb-recommendation-p-02-004` - Related records: 3 ## 15. NTSB Safety Recommendation P-97-007 **Citation:** P-97-007 **Type / status:** guidance / guidance **Agency:** National Transportation Safety Board **Effective / published:** 1998-01-06 / 1998-01-06 THE NTSB RECOMMENDS THAT THE RSPA: COMPLETE A FINAL RULE ON EMPLOYEE QUALIFICATION TRAINING, AND TESTING STANDARDS WITHIN ONE YEAR. REQUIRE OPERATORS TO TEST EMPLOYEES ON THE SAFETY PROCEDURES THEY ARE EXPECTED TO FOLLOW AND TO DEMONSTRATE THAT THEY CAN CORRECTLY PERFORM THE WORK. ### Provenance - Official: Yes - Source: - Source ID: `ntsb-pipeline` - SHA-256: `df2a830774ccf443e854edb96ce8d28de7b039ae021ffd70e737d7a97c4f9251` - Retrieved: 2026-08-20T04:57:24.741Z - Document slug: `ntsb-recommendation-p-97-007` - Related records: 1 ## 16. NTSB Safety Recommendation P-98-030 **Citation:** P-98-030 **Type / status:** guidance / guidance **Agency:** National Transportation Safety Board **Effective / published:** 1998-11-18 / 1998-11-18 THE NTSB RECOMMENDS THAT THE PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION (ORIGINALLY ISSUED TO RSPA): ASSESS THE POTENTIAL SAFETY RISKS ASSOCIATED WITH ROTATING PIPELINE CONTROLLER SHIFTS AND ESTABLISH INDUSTRY GUIDELINES FOR THE DEVELOPMENT AND IMPLEMENTATION OF PIPELINE CONTROLLER WORK SCHEDULES THAT REDUCE THE LIKELIHOOD OF ACCIDENTS ATTRIBUTABLE TO CONTROLLER FATIGUE. ### Provenance - Official: Yes - Source: - Source ID: `ntsb-pipeline` - SHA-256: `84d34546c9582a8732195f51f8b9ba4424430ec4333030ca71ec3033e1be2803` - Retrieved: 2026-08-20T04:57:24.741Z - Document slug: `ntsb-recommendation-p-98-030` - Related records: 1 ## 17. NTSB Safety Recommendation P-99-012 **Citation:** P-99-012 **Type / status:** guidance / guidance **Agency:** National Transportation Safety Board **Effective / published:** 1999-06-01 / 1999-06-01 TO THE PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION (ORIGINALLY ISSUED TO RSPA): Establish within 2 years scientifically based hours-of-service regulations that set limits on hours of service, provide predictable work and rest schedules, and consider circadian rhythms and human sleep and rest requirements. ### Provenance - Official: Yes - Source: - Source ID: `ntsb-pipeline` - SHA-256: `5697b13bc02e3998e763a8b24d6c8e02a4bfc89fdce9dab7d4f41ef192c9bb6a` - Retrieved: 2026-08-20T04:57:24.741Z - Document slug: `ntsb-recommendation-p-99-012` - Related records: 4