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The effect of reeling on the qualification of CRA lined and clad pipes according to NACE MR0175/ISO 15156-3: a methodology to qualify reeled pipelines

Picture for The effect of reeling on the qualification of CRA lined and clad pipes according to NACE MR0175/ISO 15156-3: a methodology to qualify reeled pipelines
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The use of carbon steel pipelines lined or clad with corrosion resistant alloys (CRAs) is increasing in the O&G industry. These pipelines combine the mechanical properties of carbon steel with the corrosion resistance of CRAs. Some CRAs such as AISI 316L (UNS 31603) are not pre-qualified according to ANSI/NACE MR0175/ISO 15156 part 3. The potential for corrosion and cracking of carbon steel in some applications can require a CRA liner/clad layer to resist corrosion but this can introduce the possible risk of stress corrosion cracking of some CRAs.

Product Number: 51323-18919-SG
Author: Riccardo Rizzo, Bjarte Lillebø, Stefan Marion, Erik Krogstad Sverre, Mads Arild Eidem, Karl Gunnar Solheim
Publication Date: 2023
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$20.00
$20.00

The use of carbon steel pipelines lined or clad with corrosion resistant alloys (CRAs) is increasing in the oil and gas (O&G) industry. These pipelines combine the mechanical properties of carbon steel with the corrosion resistance of CRAs. Some CRAs such as AISI 316L (UNS 31603) are not pre-qualified according to ANSI/NACE MR0175/ISO 15156 part 3. A note in table A.2 of the standard specifies that AISI 316L (UNS 31603) “shall be free from cold work caused by shaping, forming, cold reducing, tension, expansion, etc. after the final solution annealing and quenching treatment”. During installation in the reeling process, these pipes are subjected to cold deformation caused by cycles of compression and tension. Therefore, UNS 31603 liner or clad material must be qualified according to ISO 15156-3. These pipes are additionally welded with girth and longitudinal welds. This paper presents an approach to simulate the effect of the reeling process (cold deformation) during the qualification of UNS 31603 lined and clad pipes. This approach is in line with DNV ST-F101 which refers to DNV RP-F108. Throughout this paper, the methodology is described and the learnings are discussed.

The use of carbon steel pipelines lined or clad with corrosion resistant alloys (CRAs) is increasing in the oil and gas (O&G) industry. These pipelines combine the mechanical properties of carbon steel with the corrosion resistance of CRAs. Some CRAs such as AISI 316L (UNS 31603) are not pre-qualified according to ANSI/NACE MR0175/ISO 15156 part 3. A note in table A.2 of the standard specifies that AISI 316L (UNS 31603) “shall be free from cold work caused by shaping, forming, cold reducing, tension, expansion, etc. after the final solution annealing and quenching treatment”. During installation in the reeling process, these pipes are subjected to cold deformation caused by cycles of compression and tension. Therefore, UNS 31603 liner or clad material must be qualified according to ISO 15156-3. These pipes are additionally welded with girth and longitudinal welds. This paper presents an approach to simulate the effect of the reeling process (cold deformation) during the qualification of UNS 31603 lined and clad pipes. This approach is in line with DNV ST-F101 which refers to DNV RP-F108. Throughout this paper, the methodology is described and the learnings are discussed.

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