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Below are the available interpretations and guidance for the given section. To return to the list of parts, use the Parts link above. If you do not see any guidance or interpretation information below, that means there is none available for the given part/section. Return to the search page to browse additional regulations sections.

PHMSA has published several Frequently Asked Questions (FAQ) documents on regulatory topics. Please review our FAQ documents below:

Additionally PHMSA has Hazardous Materials FAQs based on letters of interpretation on the following topics:

This section of the website provides the ability to find regulations information including regulations parts, content of sections, and interpretations for regulations sections. Below is a list of parts, identified by the part number and subject. To browse sections by part, click on the subject link below. You will be taken to the eCFR website to view sections for a part.

A written regulatory interpretation, response to a question, or an opinion concerning a pipeline safety issue may be obtained by submitting a written request to the Office of Pipeline Safety (PHP–30), PHMSA, U.S. Department of Transportation, 1200 New Jersey Avenue SE., Washington, DC 20590–0001 or at the email address: In addition to email address, the requestor must include his or her return address and should also include a daytime telephone number. Requests should be submitted at least 120 days before the time the requestor needs a response.

Note: electronic submission is provided as alternative to the 49 CFR Part 190.11(b) mail-in requirement.

The regulations text of the section can be found on the eCFR website. To view the regulations text, use the link below. For assistance, please send an email to

View part 195 on the ECFR website

Interpretation Responses

Ref ID Date Company Name Individual Name Response Document
PI-16-0006 Statoil Oil and Gas LP Mr. Ronnie Speer View
PI-17-0001 G2 Partners Mr. John A. Jacobi View
PI-12-0002 McAfee & Taft Chris A. Paul, Esq. View

Regulation Sections

Section Subject
195.0 Scope
195.1 Which pipelines are covered by this Part?
195.2 Definitions
195.3 What documents are incorporated by reference partly or wholly in this part?
195.4 Compatibility necessary for transportation of hazardous liquids or carbon dioxide
195.5 Conversion to service subject to this part
195.6 Unusually Sensitive Areas (USAs)
195.8 Transportation of hazardous liquid or carbon dioxide in pipelines constructed with other than steel pipe
195.9 Outer continental shelf pipelines
195.10 Responsibility of operator for compliance with this part
195.11 What is a regulated rural gathering line and what requirements apply?
195.12 What requirements apply to low-stress pipelines in rural areas?
195.48 Scope
195.49 Annual report
195.50 Reporting accidents
195.52 Immediate notice of certain accidents
195.54 Accident reports
195.55 Reporting safety-related conditions.
195.56 Filing safety-related condition reports
195.58 Report submission requirements
195.59 Abandonment or deactivation of facilities
195.60 Operator assistance in investigation
195.61 National Pipeline Mapping System
195.63 OMB control number assigned to information collection
195.64 National Registry of Pipeline and LNG Operators
195.100 Scope
195.101 Qualifying metallic components other than pipe
195.102 Design temperature
195.104 Variations in pressure
195.106 Internal design pressure
195.108 External pressure
195.110 External loads
195.111 Fracture propagation
195.112 New pipe
195.114 Used pipe
195.116 Valves
195.118 Fittings
195.120 Passage of In-Line Inspection tools
195.122 Fabricated branch connections
195.124 Closures
195.126 Flange connection
195.128 Station piping
195.130 Fabricated assemblies
195.132 Design and construction of aboveground breakout tanks
195.134 CPM leak detection
195.200 Scope
195.202 Compliance with specifications or standards
195.204 Inspection-general
195.205 Repair, alteration and reconstruction of aboveground breakout tanks that have been in service
195.206 Material inspection
195.207 Transportation of pipe
195.208 Welding of supports and braces
195.210 Pipelines location
195.212 Bending of pipe
195.214 Welding procedures
195.216 Welding: Miter joints
195.222 Welders and welding operators: Qualification of welders and welding operators
195.224 Welding: Weather
195.226 Welding: Arc burns
195.228 Welds and welding inspection: Standards of acceptability
195.230 Welds: Repair or removal of defects
195.334 Welds: Nondestructive testing
195.246 Installation of pipe in a ditch
195.248 Cover over buried pipeline
195.250 Clearance between pipe and underground structures
195.252 Backfilling
195.254 Above ground components
195.256 Crossing of railroads and highways
195.258 Valves: General
195.260 Valves: Location
195.262 Pumping equipment
195.264 Impoundment, protection against entry, normal/emergency venting or pressure/vacuum relief for aboveground breakout tanks
195.266 Construction records
195.300 Scope
195.302 General requirements
195.303 Risk-based alternative to pressure testing older hazardous liquid and carbon dioxide pipelines
195.304 Test pressure
195.305 Testing of components
195.306 Test medium
195.307 Pressure testing aboveground breakout tanks
195.308 Testing of tie-ins
195.310 Records
195.400 Scope
195.401 General requirements
195.402 Procedural manual for operations, maintenance, and emergencies
195.403 Emergency response training
195.404 Maps and records
195.405 Protection against ignitions and safe access/egress involving floating roofs
195.406 Maximum operating pressure
195.408 Communications
195.410 Line markers
195.412 Inspection of rights-of-way and crossings under navigable waters
195.413 Underwater inspection and reburial of pipelines in the Gulf of Mexico and its inlets
195.420 Valve maintenance
195.422 Pipeline repairs
195.424 Pipe movement
195.426 Scraper and sphere facilities
195.428 Overpressure safety devices and overfill protection systems
195.430 Firefighting equipment
195.432 Inspection of in-service breakout tanks
195.434 Signs
195.436 Security of facilities
195.438 Smoking or open flames
195.440 Public awareness
195.442 Damage prevention program
195.444 CPM leak detection
195.446 Control room management
195.450 Definitions
195.452 Pipelines integrity management in high consequence areas
195.501 Scope
195.503 Definitions
195.505 Qualification program
195.507 Recordkeeping
195.509 General
195.551 What do the regulations in this subpart cover?
195.553 What special definitions apply to this subpart?
195.555 What are the qualifications for supervisors?
195.557 Which pipelines must have coating for external corrosion control?
195.559 What coating material may I use for external corrosion control?
195.561 When must I inspect pipe coating used for external corrosion control?
195.563 Which pipelines must have cathodic protection?
195.565 How do I install cathodic protection on breakout tanks?
195.567 Which pipelines must have test leads and what must I do to install and maintain the leads?
195.569 Do I have to examine exposed portions of buried pipelines?
195.571 What criteria must I use to determine the adequacy of cathodic protection?
195.573 What must I do to monitor external corrosion control?
195.575 Which facilities must I electrically isolate and what inspections, tests, and safeguards are required?
195.577 What must I do to alleviate interference currents?
195.579 What must I do to mitigate internal corrosion?
195.581 Which pipelines must I protect against atmospheric corrosion and what coating material may I use?
195.583 What must I do to monitor atmospheric corrosion control?
195.585 What must I do to correct corroded pipe?
195.587 What methods are available to determine the strength of corroded pipe?
195.588 What standards apply to direct assessment?
195.589 What corrosion control information do I have to maintain?
195.591 In-Line inspection of pipelines
195.454 Integrity assessments for certain underwater hazardous liquid pipeline facilities located in high consequence areas.