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ASME B31G-2012 pdf free

ASME B31G-2012 pdf free.Manual for Determining the Remaining Strength of Corroded Pipelines.
This document is intended solely for thc purpose of providing guidance in the evaluation of metal loss in pressurized pipelines and piping systems. It is applicable to all pipelines and piping systems within the scope of the transportation pipeline codes that are part of ASME B31 Code for Pressure Piping, namely:
ASME 831.4, Pipeline Transportation Systems for Liquid Hydrocarbons and Other Liquids; ASME B31.8, Gas Transmission and l)istribution Piping Systems; ASME B31.11, Slurry Transportation Piping Systems; and ASME 831.12, Hydrogen Piping and Pipelines, Part PL Where the term pipeline is used, it may also be read to apply to piping or pipe conforming to the acceptable applications and within the technical limitations discussed below.
1.2 Acceptable Applications
The application of this document is limited to the evaluation of wall loss in metal pipe within the following limitations:
(a) metal loss in pipelines located belowground, abovcground, or offshore
(b) metal loss due to external or internal corrosion
(c) metal loss produced by grinding where used to completely remove mechanical damage, cracks, arc bums, manufacturing defects, or other defects from the pipe surface
(d) metal loss in field bends, induction bends, and elbows
(e) metal loss that incidentally affects longitudinal or helical electric seam welds or circumferential electric welds of sound quality and having ductile characteristics. provided workmanship flaws are not present in sufficiently close proximity to interact with the metal loss
(fi metal loss of any depth with respect to the pipe wall, except that due consideration shall be given to the accuracy of measurements and effective corrosion rates when the depth of metal loss exceeds 80% of the actual pipe wall dimension
(g) metal loss in new pipe where allowed by the applicable code of construction
(h) metal loss in pipe material having ductile fracture initiation characteristics [see paras. 1.7(e) and (f)] unless using a Level 3 assessment in accordance with paras. 2.2(b) and 2.4
(i) metal loss in pipe operating at temperatures above ambient within the range of operating temperature recognized by the governing standard, and provided material strength properties at temperature are considered
(j) metal loss in pipe operating at any level of allowable design hoop stress [see paras. 1.4(a) and (b) for additional considerations]
(k) metal loss in pipe where internal pressure is the primary loading [see paras. 1.4(c) and (d) for additional considerations]ASME B31G pdf free download.

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