道达尔勘探开发 规范 GS_EP_PLR_502_EN.pdf

Exploration Production GENERAL SPECIFICATION PIPELINES - RISERS GS EP PLR 502 Precommissioning of gas pipelines 05 01/2011 General review 04 10/2008 General review 03 10/2007 General review 02 10/2005 Addition of “EP” root to GS identification 00 02/2001 First issue Rev. Date Notes Owner: EP/TDO/TEC Managing entity: EP/TDO/TEC/PLR This document is the property of Total. It must not be stored, reproduced or disclosed to others without written authorisation from the Company. Exploration Production General Specification Date: 01/2011 GS EP PLR 502 Rev: 05 Contents 1.  Scope 4  2.  Reference documents 4  3.  Definitions 5  4.  Precommissioning philosophy 6  4.1  General 6  4.2  Precommissioning phases 7  4.3  Precommissioning plan8  4.4  Safety8  5.  Pipeline Cleaning 9  5.1  General 9  5.2  Monitoring of pig trains 10  5.3  Mechanical cleaning and caliper run. 10  6.  Pipeline dewatering and swabbing 12  6.1  General 12  6.2  Dewatering and swabbing principles 12  6.3  Dewatering12  6.4  Final documentation 13  7.  Pipeline drying 14  7.1  General 14  7.2  Vacuum drying 14  7.3  Drying by circulation of dry air or nitrogen 16  7.4  Drying by circulation of natural gas17  8.  Selection of the drying method 18