Louisiana Administrative Code › Title 33 - ENVIRONMENTAL QUALITY › Part V - Hazardous Wastes and Hazardous Materials › Subpart 3 - Natural Resources › Chapter 305 - Transportation of Hazardous Liquids by Pipeline-Qualification of Pipeline Personnel [49 CFR Part 195 Subpart G] and Corrosion Control [49 CFR Part 195 Subpart H] › Subchapter B - Corrosion Control [49 CFR Part 195 Subpart H] › Section V-30588 - What standards apply to direct assessment? [49 CFR 195.588]

Current through Register Vol. 50, No. 6, June 20, 2024
A. If you use direct assessment on an onshore
					 pipeline to evaluate the effects of external corrosion, you must follow the
					 requirements of this Section for performing external corrosion direct
					 assessment. This Section does not apply to methods associated with direct
					 assessment, such as close interval surveys, voltage gradient surveys, or
					 examination of exposed pipelines, when used separately from the direct
					 assessment process. [
					49 CFR
					 195.588(a)]
B. The requirements for performing external
					 corrosion direct assessment are as follows. [
					49 CFR
					 195.588(b)]
1. General. You must follow the requirements
					 of NACE SP0502 (incorporated by reference, see §30107). Also, you must develop
					 and implement an external corrosion direct assessment (ECDA) plan that includes
					 procedures addressing pre-assessment, indirect examination, direct examination,
					 and post-assessment. [
					49 CFR
					 195.588(b)(1)]
2. Pre-Assessment. In addition to the
					 requirements in section 3 of NACE SP0502 (incorporated by reference, see
					 §30107), the ECDA plan procedures for pre-assessment must include: [
					49 CFR
					 195.588(b)(2)]
a. provisions for applying more restrictive
					 criteria when conducting ECDA for the first time on a pipeline segment; [
					49 CFR
					 195.588(b)(2)(i)]
b. the basis on which you select at least two
					 different, but complementary, indirect assessment tools to assess each ECDA
					 region; and [
					49 CFR
					 195.588(b)(2)(ii)
					 ]
c. if you utilize an indirect
					 inspection method not described in appendix A of NACE Standard SP0502
					 (incorporated by reference, see §30107), you must demonstrate the
					 applicability, validation basis, equipment used, application procedure, and
					 utilization of data for the inspection method. [
					49 CFR
					 195.588(b)(2)(iii)
					 ]
3. Indirect
					 examination. In addition to the requirements in Section 4 of NACE SP0502
					 (incorporated by reference, see §30107), the procedures for indirect
					 examination of the ECDA regions must include: [
					49 CFR
					 195.588(b)(3)]
a. provisions for applying more restrictive
					 criteria when conducting ECDA for the first time on a pipeline segment; [
					49 CFR
					 195.588(b)(3)(i)]
b. criteria for identifying and documenting
					 those indications that must be considered for excavation and direct
					 examination, including at least the following: [
					49 CFR
					 195.588(b)(3)(ii)]
i. the known sensitivities of assessment
					 tools; [
					49 CFR
					 195.588(b)(3)(ii)(A)
					 ]
ii. the procedures for using each
					 tool; and [
					49 CFR
					 195.588(b)(3)(ii)(B)
					 ]
iii. the approach to be used for
					 decreasing the physical spacing of indirect assessment tool readings when the
					 presence of a defect is suspected; [
					49 CFR
					 195.588(b)(3)(ii)(C)
					 ]
c. for each indication
					 identified during the indirect examination, criteria for: [
					49 CFR
					 195.588(b)(3)(iii)] :
i. defining the urgency of excavation and
					 direct examination of the indication; and [
					49 CFR
					 195.588(b)(3)(iii)(A)
					 ]
ii. defining the excavation
					 urgency as immediate, scheduled, or monitored; and [
					49 CFR
					 195.588(b)(3)(iii)(B)
					 ]
d. criteria for
					 scheduling excavations of indications in each urgency level. [
					49 CFR
					 195.588(b)(3)(iv)
					 ]
4. Direct Examination.
					 In addition to the requirements in section 5 of NACE SP0502 (incorporated by
					 reference, see §30107), the procedures for direct examination of indications
					 from the indirect examination must include: [
					49 CFR
					 195.588(b)(4)]
a. provisions for applying more restrictive
					 criteria when conducting ECDA for the first time on a pipeline segment; [
					49 CFR
					 195.588(b)(4)(i)]
b. criteria for deciding what action should
					 be taken if either: [
					49 CFR
					 195.588(b)(4)(ii)]
i. corrosion defects are discovered that
					 exceed allowable limits (section 5.5 2.2 of NACE SP0502 (incorporated by
					 reference, see §30107), provides guidance for criteria); or [
					49 CFR
					 195.588(b)(4)(ii)(A)
					 ]
ii. root cause analysis reveals
					 conditions for which ECDA is not suitable (section 5.6 2 of NACE SP0502
					 (incorporated by reference, see §30107), provides guidance for criteria); [
					49 CFR
					 195.588(b)(4)(ii)(B)
					 ]
c. criteria and
					 notification procedures for any changes in the ECDA plan, including changes
					 that affect the severity classification, the priority of direct examination,
					 and the time frame for direct examination of indications; and [
					49 CFR
					 195.588(b)(4)(iii)
					 ]
d. criteria that describe how and
					 on what basis you will reclassify and re-prioritize any of the provisions
					 specified in section 5.9 of NACE SP0502 (incorporated by reference, see
					 §30107). [
					49 CFR
					 195.588(b)(4)(iv)
					 ]
5. Post Assessment and
					 Continuing Evaluation. In addition to the requirements in section 6 of NACE
					 SP0502 (incorporated by reference, see §30107), the procedures for post
					 assessment of the effectiveness of the ECDA process must include: [
					49 CFR
					 195.588(b)(5)]
a. measures for evaluating the long-term
					 effectiveness of ECDA in addressing external corrosion in pipeline segments;
					 and [
					49 CFR
					 195.588(b)(5)(i)]
b. criteria for evaluating whether conditions
					 discovered by direct examination of indications in each ECDA region indicate a
					 need for reassessment of the pipeline segment at an interval less than that
					 specified in sections 6.2 of NACE SP0502 (see appendix D of NACE SP0502)
					 (incorporated by reference, see §30107). [
					49 CFR
					 195.588(b)(5)(ii)
					 ]