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Review and Recommendations on PWHT Exemptions for 2014 Edition of ASME B31.3

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A major significant change in fabrication/ welding of process piping was brought out by ASME B31.3 2014 addition Table 331.1.3 “Exemptions to Mandatory Postweld Heat Treatment” It now allowed for all carbon steel conforming to P- No1material group for all control Thickness and All weld type with exemption from Postweld heat treatment if a preheat of 95°C (200°F) is applied prior to welding on any nominal material thickness >25mm (1in). Similar exemptions are provided for P-No.3, P-No 4 group 1, and P-No. Group1. These exemptions required a closer scrutiny prior to adaptation. The review is an attempt to make end users aware of its significance.    

Product Number: 51320-14543-SG
Author: Deepak Mankar
Publication Date: 2020
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51318-10588-Corrosion Resistance of Roll-Bonded Clad Plates for Oil & Gas Applications

Product Number: 51318-10588-SG
Author: Sandra Le Manchet / Bastien Chareyre / Cédric Chauvy / Sarata Cissé
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This paper will be dedicated to the corrosion resistance of roll-bonded UNS N06625 and N08825 clad materials.
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Estimating the Financial Risk Reductions Associated with Cathodic Protection Programs

Product Number: 51320-14546-SG
Author: Parth Iyer, Yoko Nakazato, Han Wu, Millan Sen, Len Krissa
Publication Date: 2020
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On an increasingly frequent basis, pipeline operators are using risk-based decision making to prioritize cross-company expenditures. Due to the long-term mitigation benefits of Cathodic Protection (CP), when planning external corrosion mitigation activities, pipeline operators typically prioritize mitigation of deeper anomalies for integrity expenditures due to their higher Probability of Failure (PoF). However, anomalies that are not receiving adequate CP or those experiencing electrical interference may remain unaddressed using this rationale. This paper presents both a qualitative and semi-quantitative approach to support the quantification of the risk reduction benefits gained from external corrosion prevention on pipelines. This can help in the efficient prioritization of both pro-active and re-active integrity repair activities. Supporting examples are also discussed to help explain the intended use of the methodology and the interpretation of the results.
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00001 EFFECT OF ANIONS AND CATIONS ON THE PIT INITIATION IN CO2 CORROSION OF IRON AND STEEL

Product Number: 51300-00001-SG
ISBN: 00001 2000 CP
Author: G. Schmitt and S. Feinen
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