3/10/2021 0 Comments Oisd 141 Pdf
Minimum cover for Buried Pipelines 7. a) Pipe. bronze and other copper based materials shall not be used in sour multiphase service.2 General In addition to the applicable requirements of B31.Category: Pipeline Transport, Pipe (Fluid Conveyance), Stress (Mechanics), Strength Of Materials, Yield (Engineering).OISD-STD-141 (Revised) FOR RESTRICTEDCIRCULATION DESIGN AND CONSTRUCTION REQUIREMENTS FOR CROSS COUNTRY HYDROCARBON PIPELINES OISD-STD-141 First Edition, April 1990 Amended Edition, September 2001 Revised Edition, September 2003 OIL INDUSTRY SAFETY DIRECTORATE Government of India Ministry of Petroleum Natural Gas OISD-STD-141 Amended Edition, September 2001 Edition, September 2003 First Edition April 1990 Revised FOR RESTRICTED CIRCULATION DESIGN AND CONSTRUCTION REQUIREMENTS FOR CROSS COUNTRY HYDROCARBON PIPELINES Prepared by COMMITTEE ON DESIGN AND INSPECTION OF PIPELINES 7th FLOOR, NEW DELHI HOUSE 27, BARAKHAMBA ROAD NEW DELHI -110001 OIL INDUSTRY SAFETY DIRECTORATE NOTE OISD publications are prepared for use in the oil and gas industry under Ministry of Petroleum Natural Gas.
These are the property of Ministry of Petroleum Chemicals and shall not be reproduced or copied and loaned or exhibited to others without written consent from OISD. Though every effort has been made to assure the accuracy and reliability of the data contained in these documents. OISD hereby expressly disclaims any liability or responsibility for loss or damage resulting from their use. These documents are intended to supplement rather than replace their prevailing statutory requirements. Factory Inspectorate or any other Statutory body which must be followed as applicable. This standard is based on the accumulated knowledge and experience of industry members and the various national and international codes and practices. It is hoped that the provision of this standard if implemented objectively. Suggestions are invited from the users after it is put into practice to improve the standard further. With this in view. The present standard on Design and Construction Requirements for Cross Country Hydrocarbon Pipelines was prepared by the Functional Committee on Design and Inspection of Pipelines. Committee on Inspection of Design and Inspection of Pipelines. This standard in no way supersedes the statutory regulations of Chief Controller of Explosive (CCE). New Delhi House.. Suggestions for amendments to this standard should be addressed to:The Coordinator. The definition of Offshore as per B 31. For the purpose of this standard. Areas not covered by Offshore as defined in B 31.4 herein after is referred as B 31. DEFINITIONS a) MULTIPHASE FLUIDS The word Should is used to indicate that the provision is recommendatory as sound engineering practices.0 SCOPE This standard outlines the minimum requirements for design. SOUR MATERIALS FOR MULTIPHASE SERVICE Definition NACE Standard MR-OI-75 Sulfide Stress Corrosion Cracking Resistant Metallic Materials for Oil Field Equipment defines limiting concentrations on hydrogen sulphide in the fluid transported for it to be considered as sour service.. Other Loadings 4. Mill Hydrostatic Testing of line pipe is recommended as 90 of SMYS irrespective of grade of pipe material. If a pipeline is designed to operate at stress level of more than 50 of the specified minimum yield strength of the pipe.2. Braces and Anchors 5.65 shall be preheated. The pressure hold period should be 15 sec.2 Additional test requirements shall be as per Appendix-A of Part-I of this standard for steel pipes manufactured by Electric Resistance Welding andor Electric Induction welding. API-1104 shall be referred for guidance.4 DESIGN OF COMPONENTS 4. DESIGN OF PIPE SUPPORTING ELEMENTS Supports.4. CORROSION Whenever internal or external corrosion is expected during the design life of the pipeline. Ultrasonic testing for pipe skelp and weld seam is 100.5 VALVES Valves made of cast iron or ductile iron shall not be used.4 clause 404. B 31.7 STRESS VALUES Consideration shall be given to the use of lower allowable design stress if there is likelihood of repeated stress changes giving rise to fatigue conditions. Minimum cover for Buried Pipelines 7. Pipe. bronze and other copper based materials shall not be used in sour multiphase service.2 General In addition to the applicable requirements of B31.
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