La. Admin. Code tit. 33 § V-30406

Current through Register Vol. 50, No. 11, November 20, 2024

Section V-30406 - Maximum Operating Pressure [49 CFR 195.406]

A. Except for surge pressures and other variations from normal operations, no operator may operate a pipeline at a pressure that exceeds any of the following: [ 49 CFR 195.406(a)]

1. the internal design pressure of the pipe determined in accordance with §30161 However, for steel pipe in pipelines being converted under §30111, if one or more factors of the design formula (§30161) are unknown, one of the following pressures is to be used as design pressure: [ 49 CFR 195.406(a)(1)]

a. eighty percent of the first test pressure that produces yield under section N 5.0 of appendix N of ASME/ANSI B31.8 (incorporated by reference, see §507), reduced by the appropriate factors in §30161.A and E; or [ 49 CFR 195.406(a)(1)(i)]

b. if the pipe is 12-3/4 in. (324 mm.) or less outside diameter and is not tested to yield under this Paragraph, 200 p.s.i. (1379 kPa) gage; [ 49 CFR 195.406(a)(1)(ii) ]

2. the design pressure of any other component of the pipeline; [ 49 CFR 195.406(a)(2)]

3. eighty percent of the test pressure for any part of the pipeline which has been pressure tested under Chapter 303; [ 49 CFR 195.406(a)(3)]

4. eighty percent of the factory test pressure or of the prototype test pressure for any individually installed component which is excepted from testing under §30305; [ 49 CFR 195.406(a)(4)]

5. for pipelines under §30302. B.1 and B.2.a that have not been pressure tested under Chapter 303 of this Subpart, 80 percent of the test pressure or highest operating pressure to which the pipeline was subjected for four or more continuous hours that can be demonstrated by recording charts or logs made at the time the test or operations were conducted. [ 49 CFR 195.406(a)(5)]

B. No operator may permit the pressure in a pipeline during surges or other variations from normal operations to exceed 110 percent of the operating pressure limit established under §30406. A Each operator must provide adequate controls and protective equipment to control the pressure within this limit. [ 49 CFR 195.406(b)]

La. Admin. Code tit. 33, § V-30406

Promulgated by the Department of Natural Resources, Office of Conservation, Pipeline Division, LR 29:2826 (December 2003), Amended LR 441027 (6/1/2018).

AUTHORITY NOTE: Promulgated in accordance with R.S. 30:753.