It is applicable to all pipelines and piping systems within the scope of: ASME B 4 – Pipeline Transportation Systems for Liquid. Hydrocarbons and Other. ASME B31G – Level 2 Option, otherwise known as RSTRENG is most commonly used in the pipeline industry. However, ASME B31G Level 2 that is based on. Integration with NDT tools. ▫ 3D surface measurements. ▫ UT. ▫ What’s next? ▫ Pit gage data entry interface. ▫ ASME B31G (), DNV RP-F

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ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME procedures zsme policies, which precludes b31 issuance of interpretations by individuals.

Care should be exercised when grouping or clustering anomalies indicated by inline inspection for purposes of evaluating interaction during the prioritization process. Persons wishing to attend any meeting should contact the Secretary of the B31 Standards Committee. Phrase the question as a request for an interpretation of a specific requirement suitable for general understanding and use, not as a request for an approval of a proprietary design or situation.

The Effective Area Method is expressed as follows: Rangus, Ex-Officio, Bechtel J. Coym, Intertek Moody C. It requires for input a detailed longitudinal distribution or profile of metal loss.

“ASME B31G” Piping Code Enhancements for AutoPIPE – AutoPIPE Wiki – AutoPIPE – Bentley Communities

Simply mail, phone, fax, or E-mail us and a Customer Care representative will handle your request. Campbell, Air Liquide J. The allowable reference pressure is calculated from the local allowable pressure, and the relative elevation.

Page Location Change 2 1. The inquirer may also include any plans or drawings that are necessary to explain the question; however, they should not contain proprietary names or information.

Depth, d, mm If the exact measured value is not listed, choose the row showing the next greater depth. Size px x x x x The Standards Committee that approved the Manual was balanced to assure axme individuals from competent and concerned interests b31b had an opportunity to participate. Errata to codes and standards may be posted on the ASME Web site under the Committee Pages to provide corrections to incorrectly published items, or to correct typographical or grammatical errors in codes and standards.


Locate the table corresponding to the size of the pipe, D.

Nominal B31y Diameter OD: There is an option available to automatically receive an e-mail notification when errata are posted to a particular code wsme standard. User Defined Outside Diameter schedtype: Validation of software should include documented evidence that correct results are obtained over the full range of parameters that could reasonably be expected to occur when making evaluations.

Determine applicable pipe material properties from appropriate records. While each method can be applied as presented, source documents may provide additional information to the user. The user is cautioned against overstating the precision of evaluations applied with flaw dimensions indicated by inline inspection without adequate calibration or verification of actual flaw sizes by investigations carried out in the field.

The methods and criteria provided herein do not asmf failure by perforation.

Incorporation of these other methods into a recognized Code document provides the pipeline operator or other user with a formalized framework within which to use such methodologies, as well as a wider range of codified technical options with which to make an evaluation. Wall Thickness Schedule Type tnu: Further references may be found in other documents available in the public domain. Owing to its iterative nature, it is a practical necessity to use a computer program or other algorithmic approach e.

In the case where an interpretation is corrected by errata, the original interpretation number with the suffix E is used.

[Pipeline Corrosion Assessment] – ASME B31G Compliance | Creaform

Wall Thickness Corrosion Allowance ttoltype: Noninteracting flaws should be evaluated as separate flaws. This definition remains an inherent element of the Level 0 assessment and is recommended with the Level 1 assessment performed in accordance with para. Cases may be issued for the purpose of providing alternative rules when justified, to permit early implementation of an approved revision when the need is urgent, or to provide rules not covered by existing provisions. If spaced sufficiently closely, the metal loss areas may interact so as to result in failure at a lower pressure than would be expected based on an analysis of the separate flaws.


Other seam and weld types shall be investigated to establish fracture properties before applying methods described herein to metal loss affecting such welds. Silvia, Process Engineers and Constructors, Inc. As such, users of this Standard may interact with the Committee by requesting interpretations, proposing revisions, and attending Committee meetings.

Our representatives are ready to assist you in the following areas: B31J Pipeline Personnel Qualification. Such proposals should be as specific as possible, citing the paragraph number sthe proposed wording, and a detailed description of the reasons for the proposal, including any pertinent documentation.


Approved revisions will be published periodically. The interpretations have been assigned numbers in chronological order. Clean the corroded pipe surface to bare metal. The revision of B31G reflected those objectives.

Therefore, the tables may show that a given corroded area is unsuitable for the current 2. A Level 2 evaluation may be suitable for use in prioritizing metal-loss anomalies azme by high-resolution inline inspection. Use either the nominal pipe diameter and wall thickness, or the measured pipe diameter and wall thickness for the ASME B31G checks.

October 24, The next edition of this Manual is scheduled for publication in If using a grid pattern, the analysis must be repeated along each meridian to establish the governing solution. Thank you for interesting in our services.

When evaluating anomalies identified by inline inspection, use of larger factors of safety will result in smaller flaws being left in service following field investigation and pipeline repairs. Wall Thickness Fabrication Tolerance Type tfu: