Louisiana Administrative Code › Title 43 - NATURAL RESOURCES › Part XIII - Office of Conservation-Pipeline Safety › Subpart 3 - Transportation of Natural Gas or Other Gas by Pipeline: Minimum Safety Standards [49 CFR Part 192] › Chapter 27 - Operations [49 CFR Part 192 Subpart L] › Section XIII-2707 - Verification of Pipeline Material Properties and Attributes: Onshore Steel Transmission Pipelines [49 CFR 192.607]

Current through Register Vol. 50, No. 6, June 20, 2024
A. Applicability. Wherever required by this
				  part, operators of onshore steel transmission pipelines must document and
				  verify material properties and attributes in accordance with this Section.
				  [49
				  CFR 192.607(a)]
B. Documentation of Material Properties and
				  Attributes. Records established under this Section documenting physical
				  pipeline characteristics and attributes, including diameter, wall thickness,
				  seam type, and grade (e.g., yield strength, ultimate tensile strength, or
				  pressure rating for valves and flanges, etc.), must be maintained for the life
				  of the pipeline and be traceable, verifiable, and complete. Charpy v-notch
				  toughness values established under this Section needed to meet the requirements
				  of the ECA method at §2724.C.3 or the fracture mechanics requirements at
				  §2912 must be maintained for the life of the pipeline. [49
				  CFR 192.607(b)]
C. Verification of Material Properties and
				  Attributes. If an operator does not have traceable, verifiable, and complete
				  records required by Subsection B of this Section, the operator must develop and
				  implement procedures for conducting nondestructive or destructive tests,
				  examinations, and assessments in order to verify the material properties of
				  aboveground line pipe and components, and of buried line pipe and components
				  when excavations occur at the following opportunities: Anomaly direct
				  examinations, in situ evaluations, repairs, remediations, maintenance, and
				  excavations that are associated with replacements or relocations of pipeline
				  segments that are removed from service. The procedures must also provide for
				  the following. [49
				  CFR 192.607(c)]
1. For nondestructive tests, at each test
				  location, material properties for minimum yield strength and ultimate tensile
				  strength must be determined at a minimum of 5 places in at least 2
				  circumferential quadrants of the pipe for a minimum total of 10 test readings
				  at each pipe cylinder location. [49
				  CFR 192.607(c)(1)]
2. For destructive tests, at each test
				  location, a set of material properties tests for minimum yield strength and
				  ultimate tensile strength must be conducted on each test pipe cylinder removed
				  from each location, in accordance with API Specification 5L. [49
				  CFR 192.607(c)(2)]
3. Tests, examinations, and assessments must
				  be appropriate for verifying the necessary material properties and attributes.
				  [49
				  CFR 192.607(c)(3)]
4. If toughness properties are not
				  documented, the procedures must include accepted industry methods for verifying
				  pipe material toughness. [49
				  CFR 192.607(c)(4)]
5. Verification of material properties and
				  attributes for non-line pipe components must comply with Subsection F of this
				  Section. [49
				  CFR 192.607(c)(5)]