TECHNICAL SPECIFICATIONHYDROGEN INDUCED CRACKING SENSITIVITY TEST (AMENDMENTS/SUPPLEMENTS TO NACE TM0284) MESC SPE 74/125 September 2012 MESC SPECIFICATION DOCUMENT This document is restricted. Neither the whole nor any part of this document may be disclosed to any third party without the prior written consent of Shell Global Solutions International B.V., The Netherlands. The copyright of this document is vested in this company. All rights reserved. Neither the whole nor any part of this document may be reproduced, stored in any retrieval system or transmitted in any form or by any means (electronic, mechanical, reprographic, recording or otherwise) without the prior written consent of the copyright owner. The use of MESC SPEs by these Operating Units is subject in all respects to the terms and conditions of the relevant Service Agreement.V. and they are supplemented with the experience of Shell Operating Units. The copyright of MESC SPEs vests in Shell GSI. in most cases under Service Agreements primarily with Shell companies and other companies receiving technical advice and services from Shell GSI or another Shell Service Company. of: Shell Global Solutions International B.MESC SPE 74/125 September 2012 Page 2 PREFACE MESC (Materials and Equipment Standards and Code) SPE documents reflect the views. be disclosed by users to any company or person whomsoever and the MESC SPEs shall be used exclusively for the purpose for which they have been provided to the user. which will achieve the same level of integrity as reflected in the MESC SPEs. (SIEP) and/or other Shell Service Companies. Where appropriate they are based on. and thereby to achieve maximum technical and economic benefit from standardization. MESC SPEs shall not. materials supplied or . The information set forth in these publications is provided to Shell companies for their consideration and decision to implement. or reference is made to. construction. three categories of users of MESC SPEs can be distinguished: 1) Operating Units having a Service Agreement with Shell GSI or other Shell Service Company. without the prior written consent of Shell GSI.V. 3) Contractors/subcontractors and Manufacturers/Suppliers under a contract with users referred to under 1) or 2) which requires that tenders for projects. If in doubt. even if it is wholly or partly caused by negligence on the part of Shell GSI or other Shell Service Company. They shall be returned after use. Subject to any particular terms and conditions as may be set forth in specific agreements with users. which shall only be made by users with the express prior written consent of Shell GSI. including any copies.generally . They are based on the experience acquired during their involvement with the design. This is of particular importance where MESC SPEs may not cover every requirement or diversity of condition at each locality. The system of MESC SPEs is expected to be sufficiently flexible to allow individual Operating Units to adapt the information set forth in MESC SPEs to their own environment and requirements. Users shall arrange for MESC SPEs to be held in safe custody and Shell GSI may at any time require information satisfactory to them in order to ascertain how users implement this requirement. In particular. oil and gas production facility. application or implementation of any MESC SPE. Without prejudice to any specific terms in respect of confidentiality under relevant contractual arrangements. consult the Principal or its technical advisor. without detracting from his own responsibility.work performed on behalf of the said users comply with the relevant standards. (Shell GSI) and/or Shell International Exploration and Production B. gas handling installation. combination of MESC SPEs or any part thereof. or companies affiliated to these companies. international. 2) Other parties who are authorized to use MESC SPEs subject to appropriate contractual arrangements (whether as part of a Service Agreement or otherwise). national and industry standards. that may issue MESC SPEs or require the use of MESC SPEs. the Contractor or Manufacturer/Supplier shall. . Shell GSI disclaims any liability of whatsoever nature for any damage (including injury or death) suffered by any company or person whomsoever as a result of or in connection with the use. operation and maintenance of processing units and facilities. The objective is to set the standard for good design and engineering practice applied by Shell companies operating an oil refinery. All administrative queries should be directed to the MESC SPE Administrator in Shell GSI. the Principal will expect them to follow those practices. Consequently. The benefit of this disclaimer shall inure in all respects to Shell GSI and/or any Shell Service Company. for those requirements not specifically covered. The right to use MESC SPEs is granted by Shell GSI. regional. chemical plant. at the time of publication. When Contractors or Manufacturers/Suppliers use MESC SPEs they shall be solely responsible for the quality of work and the attainment of the required design and engineering standards. or any other such facility. .......2 1.. INTENDED USE AND REGULATORY CONSIDERATIONS ............. 10 ...............................................................5 INTRODUCTION . 6 PART III REFERENCES ....................................1 1........MESC SPE 74/125 September 2012 Page 3 TABLE OF CONTENTS PART I 1..................................4 1.................................................................................................................. 4 DISTRIBUTION.. 4 COMMENTS ON THIS MESC SPE ......3 1.................................................. 4 SCOPE........................ 4 CHANGES SINCE PREVIOUS EDITION ...................................................................................................................................................................... 5 PART II AMENDMENTS/SUPPLEMENTS TO NACE TM0284 .................................... 4 DEFINITIONS .................................................................................. In all cases the Contractor shall inform the Principal of any deviation from the requirements of this MESC SPE which is considered to be necessary in order to comply with national and/or local regulations. procurement. Any clauses of NACE TM0284 that are not amended or supplemented by this MESC SPE shall apply as written. supply/distribution installations. or operation or maintenance of a facility.1 General definitions The Contractor is the party that carries out all or part of the design. the Principal. chemical plants. INTENDED USE AND REGULATORY CONSIDERATIONS Unless otherwise authorised by Shell GSI.MESC SPE 74/125 September 2012 Page 4 PART I INTRODUCTION 1. In addition. The Principal may also include an agent or consultant authorised to act for. The Principal may then negotiate with the Authorities concerned. 1. If national and/or local regulations exist in which some of the requirements may be more stringent than in this MESC SPE the Contractor shall determine by careful scrutiny which of the requirements are the more stringent and which combination of requirements will be acceptable with regards to safety. the objective being to obtain agreement to follow this MESC SPE as closely as possible.4 CHANGES SINCE PREVIOUS EDITION The previous edition of this SPE is dated May 2010. The Manufacturer/Supplier is the party that manufactures or supplies equipment and services to perform the duties specified by the Contractor.3 DEFINITIONS 1. ‘Modify to read’ or ‘Delete’. The word shall indicates a requirement. The Principal is the party that initiates the project and ultimately pays for it. purchase order or requisition sheet. . and on behalf of. economic and legal aspects. The Principal may undertake all or part of the duties of the Contractor. This MESC SPE is intended for use in oil refineries. gas plants. which are covered in Part II of this MESC SPE. the distribution of this MESC SPE is confined to Shell companies and. construction. The main changes are to invoke and align with the 2011 version of NACE TM0284. The word should indicates a recommendation.2 DISTRIBUTION. where necessary. the email address of MESC SPE administrator is updated.3. 1. commissioning or management of a project.1 SCOPE This MESC SPE specifies requirements for hydrogen induced cracking (HIC) sensitivity testing and is based on NACE TM0284-2011. where applicable. exploration and production facilities and. This MESC SPE shall apply in addition to the applicable MESC Buying Description. This MESC SPE is written as amendments and supplements to NACE TM0284-2011. 1. engineering. to Contractors and Manufacturers/Suppliers nominated by them. environmental. The clause numbering of NACE TM0284 has been retained and any amendments are identified as ‘Add’. 5 COMMENTS ON THIS MESC SPE Comments on this MESC SPE may be sent to the MESC SPE Administrator at [email protected] SPE 74/125 September 2012 Page 5 1. . Shell staff may also post comments on this MESC SPE on the Surface Global Network (SGN) under the Standards folder. 2. NaCl. subject to the approval of the Principal). a sodium chloride. CH3COOH) solution saturated with H2S at ambient temperature and pressure. Type 3. acetic acid (NaCl. For wall thickness greater than 30 mm (1. internal and external). . the test specimen thickness shall be limited to a maximum thickness of 30 mm (1.e.C (for which the piping material or equipment supplier or steel manufacturer shall appoint the witnessing party.36 ± 0.6 Add new clause Materials shall be subjected to HIC testing at a frequency of one test per heat unless specified otherwise in following sections..1.e. 2.5 Add new clause Compliance with the HIC testing requirements is the responsibility of the piping material or equipment supplier but the testing shall be performed by the steel manufacturer (i.3 Add The H2S purity shall be 99.80 ± 0. 4..04 in) wide.1 Add . H 2S gas.1.04 in) may be removed from each of the surfaces (i. and distilled or deionized water. 4. 1.2 Modify to read The test specimen thickness shall be the full wall thickness of the pipe up to a maximum of 30 mm (1. Material inspection certificates shall be in accordance with ISO 10474.2 in).1 Modify to read The reagents for Test Solution A shall be nitrogen gas for purging.. CH3COOH.. 1. 1.04 in) long x 20 ± 1 mm (0. After a specified time the test specimens shall be removed and evaluated.1.5 vol% or better and oxygen free. Test specimen blanks shall not be flattened.2 in).MESC SPE 74/125 September 2012 Page 6 PART II AMENDMENTS/SUPPLEMENTS TO NACE TM0284 1.7 Add new clause The Principal shall indicate if any of these tests are to be witnessed.2 in) as described in Section 5.2 Modify to read The tests shall be performed with Solution A.except that for seamless pipe and fittings the specimens shall be 60 ± 1 mm (2. A maximum of 1 mm (0. testing shall be done by the original material manufacturer as a qualification of his manufacturing route for HIC resistant steel material). 2. SAWL.2. They shall be handled using only degreased tongs or clean gloves. The method used shall be reported.5 Add new clause For plate or strip where more than one thickness may be rolled from the same heat. SSC test SMLS. 6. An increase or decrease in the cold-expansion ratio of more than 0. extreme care shall be taken not to contaminate the specimens. thereafter. The adequacy of the degreasing method shall be determined for each batch of test specimens by the atomizer test in accordance with ASTM F 21 or another equivalent method. At least one pipe from every steel melt and heat treatment combination shall be tested in the test solution. tests shall be performed on both the thickest and the thinnest material produced from each heat.3). SAWH Two tests per test unit of pipe with the same cold expansion a) ratio . One test for heats less than 100 tonne Hardness testing of hard spots in welded pipe HFW. Specimens shall not be coated in any way before exposure in the test environment. HFW. Thereafter. SAWH Each hard spot found on the internal or external surface of the pipe Non-destructive inspection SMLS. one test for each test unit of not more than 10 heats of steel If required. SAWL. HFW. One test for heats less than 100 tonne Hardness testing of longitudinal or helicalseam weld of welded pipe HFW.MESC SPE 74/125 September 2012 Page 7 4. One test for each pipe provided for manufacturing procedure qualification NOTE: a) The cold-expansion ratio is designated by the manufacture (see 8. SAWL. 5. HFW. SAWL. SAWH One test for each of the first three heats applied.2. SAWL.4. SAWL. SAWH In accordance with Annex K HIC test SMLS. the test specimens shall be degreased with a suitable degreasing solution and rinsed with an appropriate solvent. Where products of different dimensions . the required HIC testing frequency shall be as per table below: Type of inspection Type of pipe Frequency of inspection Hardness testing of pipe SMLS.9. HFW. SAWH Two tests per test unit of pipe with the same cold expansion a) ratio .1 Modify to read Prior to testing. such as acetone.1 Add Three test specimens shall be taken from each test pipe. tests shall be performed both on products with the thickest and the thinnest dimensions.6 Add new At least one fitting from every steel melt and heat treatment combination shall be tested in the test solution.002 requires the creation of a new test unit 4. For line pipe ordered to ISO 3183 PSL2. Where products of different dimensions are produced in one steel melt and heat treatment combination. 3. H2S gas shall be bubbled through the test solution.2 in).1. 8.The pH of the Solution A at the end of the test shall be measured and shall not exceed 4.1 Add The tendency to blister shall be reported after visual examination. a) Calculated values (refer to ISO 15156-2:2009. the H2S flow 3 rate may be reduced to 10 cm /min per litre of test solution and maintained at this rate for the remainder of the test period to ensure that the test solution remains saturated with H2S. and photographs shall be taken of the two wide faces of each coupon to show any blistering. multiple specimens representing the full thickness shall be prepared) and the microstructure evaluated for the degree of banding according to .1. If at any time during the test a white haze clouds the solution. The initial pH shall be 2.1 Modify to read pH at start of test . An acceptable iodometric titration procedure is detailed in Appendix C (nonmandatory). HIC susceptible material shall be tested to demonstrate the effectiveness of the solution.0% of the quantities specified. The test solution shall consist of 5.The pH of the Solution A at the start of the test shall be measured immediately after H2S saturation and shall not exceed 3. If any specimen fails to meet any of the above acceptance criteria. 8.4 Modify to read If specified by the Principal.2 Modify to read pH at end of test . 8. The rate 3 of bubbling shall be at least 200 cm /min per litre of test solution for the first 60 min.0 wt% NaCl and 0. 8. which has been subject to nitrogen purging in advance.5): % (maximum) Average per specimen CLR CTR CSR 15 5 2 b) The maximum individual crack length on any section shall not exceed 5 mm (0.6 Add new clause Unless otherwise specified.50 wt% CH3COOH in distilled or deionized water (i. tests shall be performed both on products with the thickest and the thinnest dimensions.4 Add For each section containing cracks.7 ± 0.e. while maintaining a positive pressure of H2S gas. 9.MESC SPE 74/125 September 2012 Page 8 clause are produced in one steel melt and heat treatment combination. Clause B. 50.00 g of CH3COOH dissolved in 945 g of distilled or deionized water).1.3 Modify to read After purging. the heat of steel represented by the test shall be rejected. The concentration of H2S in the test solution shall be measured by iodometric titration and shall be a minimum of 2.2. one photograph shall be taken showing the complete transverse sections.7 Add new clause One specimen from each plate/strip shall be polished and etched (in thicker plates.0 for the test to be valid. All reagents added to the test solution shall be measured to ± 1. this is evidence that oxygen ingress has occurred so the test shall be stopped and repeated with new specimens and fresh solution. 9.300 ppm at the end of the test. 8.3 Modify to read The test solution (Solution A) shall be prepared in a separate sealed vessel 3 that is purged with nitrogen for at least one hour at a rate of 100 cm /min per litre of test solution before transferring the test solution to the test vessel.6 Add new clause Oxygen Contamination 9.. the following acceptance criteria shall be met: The small positive pressure of H2S shall be maintained in the test cell by the use of an outlet trap to prevent oxygen contamination from the air.3. 8.3.0 g of NaCl and 5. 9. thereafter. (c) pH of the test solution before introduction of H2S .2.4 Add For each section.3. and (f) Temperature of the test solution—specified in Paragraph 8. showing the parent material microstructure. showing any blisters.2.2 Modify to read The following shall be reported: (a) Method of testing for adequacy of test specimen degreasing. (b) Photographs of specimens.1. for information only. showing the type of inclusions in the steel.3. using ASTM E 1268 reporting nomenclature.5. For each value.6 Add new clause The report shall also include: (a) Photomicrographs of the specimens showing cracking. (b) Test solution used (Solution A). Assessment of microstructure banding in accordance with ASTM E1268. a pass/fail mark shall be reported according to the specified acceptance criteria in 9. (g) H2S content of test solution . Micro-indentation hardness tests are not required. the maximum individual crack length shall be reported. iii. (d) pH of the test solution at start of test (after saturation with H 2S) specified in Paragraph 8.specified in Paragraphs 8. Unetched.6. together with photomicrographs of adjacent material structures and photomicrographs of the bulk material structure (samples) used to assess microstructure banding: i. including analysis for microalloying elements. (d) Full chemical analysis of material tested.specified in Paragraph 8. 10.3 10. Etched. . (e) Mechanical properties of materials tested after a simulated PWHT cycle. ii.1. (e) pH of the test solution at end of test—specified in Paragraph 8. Results shall be reported.3. if applicable. (c) Location and dimensions of specimens.MESC SPE 74/125 September 2012 Page 9 ASTM E 1268. 10. com/standards.MESC SPE 74/125 September 2012 Page 10 PART III REFERENCES In this MESC SPE.O. ch. and the use of cast irons ISO 15156-2:2009 Issued by: ISO Central Secretariat 1. Texas 77218 USA INTERNATIONAL STANDARDS Steel and steel products – Inspection documents ISO 10474 Petroleum and natural gas industries — Materials for use in H2S-containing environments in oil and gas production — Part 2: Cracking-resistant carbon and low alloy steels. the latest edition of each publication shall be used.shell. . Most of the referenced external standards are available to Shell staff on the SWW (Shell Wide Web) at http://sww. West Conshohocken PA 19428-2959 USA Test Method – Evaluation of Pipeline Steels for Resistance to Stepwise Cracking NACE TM0284-2011 Issued by: NACE International P. 2. Unless specifically designated by date. de la Voie-Creuse Case postale 56 CH-1211 Genève 20 Switzerland Copies can also be obtained from national standards organizations. Box 218340 Houston. AMERICAN STANDARDS Standard practice for assessing the degree of banding or orientation of microstructures ASTM E 1268 Standard Test Method for Hydrophobic Surface Films by the Atomizer Test ASTM F 21 Issued by: American Society for Testing and Materials 100 Barr Harbor Drive. reference is made to the following publications: NOTES: 1. together with any amendments/supplements/revisions thereto.