| 12/20/1979 | Transportation of natural gas and other gas by pipelines; Cathodically protected transmission lines. | PS-52 | final rule | FR | 44 FR 75384 |
| 12/13/1979 | Transportation of natural and other gas by Pipeline; Leakage Surveys | PS-62 | notice of proposed rulemaking-withdrawal | NPRM | 44 FR 72201 |
| 12/6/1979 | Transportation of hazardous liquids by pipeline; Reconsideration of Procedures for Operations, Maintenance and Emergencies | PS-51 | final rule response to petition for reconsideration | FR | 44 FR 70164 |
| 11/29/1979 | Transportation of natural and other gas by Pipeline; Hot taps in gas pipelines | PS-60 | notice of proposed rulemaking-withdrawal | NPRM | 44 FR 68491 |
| 11/29/1979 | Transportation of natural and other gas by pipeline; Maps and Records | PS-61 | advance notice of proposed rulemaking-withdrawal | ANPRM | 44 FR 68493 |
| 11/15/1979 | Transportation of natural and other gas by pipeline; Damage prevention program | PS-59 | notice of proposed rulemaking | NPRM | 44 FR 65792 |
| 10/4/1979 | Transportation of natural and other gas by pipeline; Joining of plastic pipe. | PS-54 | final rule-extension of effective date | FR | 44 FR 57100 |
| 9/13/1979 | Transportation of natural and other gas and hazardous liquids by pipeline; Temperature limits by pipeline; Temperature limits on steel pipe that has been cold expanded to meet the specified minimum yield strength | PS-58 | notice of proposed rulemaking | NPRM | 44 FR 53185 |
| 9/13/1979 | Transportation of Liquids by Pipeline; Valve spacing on Pipelines carrying HVL | PS-53 | notice of proposed rulemaking amended | NPRM | 44 FR 53187 |
| 8/30/1979 | Transportation of natural gas and other gas by pipeline; Joining of plastic pipe | PS-54 | final rule-extension of comment period | FR | 44 FR 50842 |
| 7/23/1979 | Transportation of natural gas and other gas by pipeline; Joining of plastic pipe | PS-54 | final rule | FR | 44 FR 42968 |
| 7/16/1979 | Transportation of hazardous liquids by pipeline; Reconsideration of Procedures for Operations, Maintenance and Emergencies | PS-51 | final rule | FR | 44 FR 41197 |
| 5/17/1979 | Pipeline Occupational Safety and Health Standards; Advance notice of proposed rulemaking | OPSO-39 | advance notice of proposed rulemaking | ANPRM | 44 FR 28831 |
| 3/5/1979 | Transportation of natural and other gas by pipeline: Annual Reports and Incident Reports | OPS-49 | notice of proposed rulemaking | NPRM | 44 FR 12070 |
| 2/22/1979 | Monitoring of Gas Odor Level | PS-57 | notice of proposed rulemaking | NPRM | 44 FR 10604 |
| 2/8/1979 | LNG Facilities Federal Safety Standards | OPSO-46 | notice of proposed rulemaking | NPRM | 44 FR 8142 |
| 2/5/1979 | Transportation of Liquids by Pipeline; Highly Volatile Liquids | PS-56 | advance notice of proposed rulemaking | ANPRM | 44 FR 6961 |
| 11/3/1978 | Transportation of Liquids by Pipeline: Testing Highly Volatile Liquid Pipelines | PS-55 | notice of proposed rulemaking | NPRM | 43 FR 52505 |
| 10/23/1978 | Transportation of natural gas and other gas by pipeline; Joining of plastic pipe | PS-54 | notice of proposed rulemaking | NPRM | 43 FR 49334 |
| 9/25/1978 | Transportation of natural or other gas by pipeline; Design of Plastic Pipelines | OPSO-42 | extension of final rule effective date | FR | 43 FR 43308 |
| 9/21/1978 | Recommendations by NTSB | OPS-29 | advance notice of proposed rulemaking-withdrawal | ANPRM | 43 FR 42772 |
| 9/21/1978 | Transporatation of natural and other gas by pipeline: Definition of gathering lines | OPS-31 | notice of proposed rulemaking | NPRM | 43 FR 42773 |
| 9/5/1978 | Transportation of natural and other gas by pipeline; Corrosion Control Requirements | PS-50 | final rule | FR | 43 FR 39389 |
| 9/5/1978 | Transportation of Liquids by Pipeline; Valve spacing on Pipelines carrying HVL | PS-53 | notice of proposed rulemaking | NPRM | 43 FR 39402 |
| 8/22/1978 | LNG Facilities Federal Safety Standards; Extension of comment period and Listing of Supplemenatary sources of Background Materials | OPSO-46 | advance notice of proposed rulemaking | ANPRM | 43 FR 42235 |
| 8/10/1978 | Transporation of liquids by pipeline; Procedures for operation, maintenance and emergencies | PS-51 | notice of proposed rulemaking | NPRM | 43 FR 35513 |
| 8/10/1978 | Transporation of natural and other gas by pipeline; Cathodically protected Transmission Lines, Separately Protected Service Lines | PS-52 | notice of proposed rulemaking | NPRM | 43 FR 39401 |
| 7/11/1978 | Transportation of natural and other gas by pipeline: Annual Reports and Incident Reports | OPS-49 | notice of proposed rulemaking-extension of comment period | NPRM | 43 FR 29811 |
| 6/28/1978 | Part 192 Transportation of natural and other gas by Pipeline
Part 195 Transportation of liquids by Pipeline:
Qualification and Design of Steel Pipe | OPSO-77-10 | final rule correction | FR | 43 FR 27540 |
| 6/8/1978 | Transportation of natural and other gas by pipeline: Annual Reports and Incident Reports | OPS-49 | notice of proposed rulemaking-correction | NPRM | 43 FR 24866 |
| 6/5/1978 | Transportation of natural and other gas by pipeline: Reports of Leaks | OPS-49 | notice of proposed rulemaking | NPRM | 43 FR 24478 |
| 5/18/1978 | Transportation of natural and other gas by Pipeline; Design of plastic pipelines | OPSO-42 | final rule postponement of effective date | FR | 43 FR 21462 |
| 5/1/1978 | Part 192 Transportation of natural and other gas by Pipeline
Part 195 Transportation of liquids by Pipeline:
Qualification and Design of Steel Pipe | OPSO-77-10 | final rule | FR | 43 FR 18553 |
| 4/3/1978 | Transportation of natural and other gas by Pipeline; Design of plastic pipelines | OPSO-42 | notice of proposed rulemaking | NPRM | 42 FR 8386 |
| 2/16/1978 | Transportation of liquids by pipeline Conversion of existing pipelines; General Requirements | OPSO-77-4 | final rule | FR | 43 FR 6786 |
| 2/10/1977 | Transportation of natural and other gas by Pipeline; Design of plastic pipelines | OPSO-42 | notice of proposed rulemaking | NPRM | 43 FR 13880 |
| 12/7/1977 | Transportation of hazardous gas or liquid by pipeline:
Qualification and Design of Steel Pipe | OPSO-77-10 | notice of proposed rulemaking | NPRM | 42 FR 62397 |
| 11/25/1977 | Transportation of liquids by Pipeline; Longintudinal seams in Pipebends; Correction | OPSO-38 | final rule correction | FR | 42 FR 60148 |
| 11/25/1977 | Transportation of natural and other gas by pipeline; Conversion of Existing Pipelines to Gas Service | OPSO-77-3 | final rule | FR | 42 FR 60146 |
| 10/25/1977 | Corrosion control for metal alloy fittings in plastic pipelines; Denial of petition for reconsideration | OPSO-37 | final rule denial of petition for reconsideration | FR | 42 FR 56397 |
| 9/26/1977 | Gas Pipeline Safety Program: Grant-in-Aid Program | OPSO-47 | notice of proposed rulemaking | NPRM | 42 FR 48900 |
| 9/1/1977 | Gas Pipeline Safety Grant-in-Aid Program | OPSO-47 | notice of proposed rulemaking | NPRM | 42 FR 44065 |
| 8/25/1977 | Transportation of liquids by pipeline; Longintudinal Seams in pipe bends | OPSO-38 | final rule | FR | 42 FR 42865 |
| 7/11/1977 | Transportation of natural and other gas by Pipeline: Corrosion control for Metal alloy fittings in plastic pipelines. | OPSO-37 | final rule | FR | 42 FR 35653 |
| 5/16/1977 | LNG Facilities Federal Safety Standards | OPSO-46 | advance notice of proposed rulemaking correction | ANPRM | 42 FR 24758 |
| 4/21/1977 | LNG Facilities Federal Safety Standards | OPSO-46 | advance notice of proposed rulemaking | ANPRM | 42 FR 20776 |
| 4/7/1977 | Transporation of hazardous liquids by pipeline conversion of existing pipelines; General Requirements | OPSO-77-4 | notice of proposed rulemaking | NPRM | 42 FR 18412 |
| 3/24/1977 | Transportation of natural and other gas by pipeline; Conversion of Existing Pipelines to Gas Service | OPSO-77-3 | notice of proposed rulemaking | NPRM | 42 FR 15932 |
