TERASEN PIPELINES (TRANS MOUNTAIN) INC. ENGINEERING STANDARDS AND PRACTICES MAIN LINE HYDROSTATIC TEST PROCEDURE MP4121, Revision 2, July 1999 TERASEN PIPELINES (TRANS MOUNTAIN) INC. ENGINEERING STANDARDS AND PRACTICES MP4121 Revision 2 July 16, 1999 Page 1 of 23 Title: MAIN LINE HYDROSTATIC TEST PROCEDURE TABLE OF CONTENTS 1.0 SCOPE...............................................................................................................................4 2.0 REFERENCE PUBLICATIONS .....................................................................................4 3.0 DEFINITIONS ...................................................................................................................4 3.1 Fabricated Assemblies........................................................................................4 3.2 Hydrostatic Testing ..............................................................................................4 3.3 km ...........................................................................................................................4 3.4 Main Line Piping ...................................................................................................5 3.5 MOP........................................................................................................................5 3.6 NPS ........................................................................................................................5 3.7 PN...........................................................................................................................5 3.8 Station Piping ........................................................................................................5 3.9 SMYS .....................................................................................................................5 4.0 TEST REQUIREMENTS .................................................................................................5 4.1 General..................................................................................................................5 4.1.1 Test Supervision......................................................................................... 5 4.1.2 Application .................................................................................................. 6 4.1.3 Safety .......................................................................................................... 6 4.2 Test Medium .........................................................................................................6 4.2.1 General ....................................................................................................... 6 4.2.2 Additives ..................................................................................................... 7 4.2.3 Hydrocarbons.............................................................................................. 7 4.2.4 Volatile Liquids ............................................................................................ 7 4.3 Test Duration.........................................................................................................7 4.3.1 Buried Piping During Testing...................................................................... 7 4.3.2 Piping Exposed During Testing .................................................................. 7 4.3.3 Pre-Testing Main Line Piping ..................................................................... 7 4.3.4 Fabricated Assemblies ............................................................................... 7 4.4 Test Pressure........................................................................................................7 4.4.1 Strength Test Pressure, Piping .................................................................. 7 4.4.2 Strength Test Pressure, Fabricated Assemblies........................................ 8 4.4.3 Strength Test Pressure, Maximum............................................................. 8 4.4.4 Strength Test Pressure, Minimum.............................................................. 8 4.4.5 Leak Test Pressure..................................................................................... 8 4.5 Test Equipment.....................................................................................................9 4.5.1 Equipment Required ................................................................................... 9 4.5.2 Equipment Calibration ................................................................................ 9 TERASEN PIPELINES (TRANS MOUNTAIN) INC. ENGINEERING STANDARDS AND PRACTICES MP4121 Revision 2 July 16, 1999 Page 2 of 23 Title: MAIN LINE HYDROSTATIC TEST PROCEDURE 4.5.3 Certification ................................................................................................. 9 4.5.4 Instrumentation Arrangements ................................................................... 9 4.5.5 Test Head Assemblies................................................................................ 9 5.0 TEST PREPARATION...................................................................................................12 5.1 Test Plan..............................................................................................................12 5.1.1 Test Organization ..................................................................................... 12 5.1.2 Test Medium ............................................................................................. 12 5.1.3 Test Temperature ..................................................................................... 12 5.1.4 Test Pressure, New Construction............................................................. 13 5.1.5 Test Pressure, Existing Pipeline Systems................................................ 13 5.1.6 Drawings ................................................................................................... 13 5.1.7 Safety ........................................................................................................ 14 5.1.8 Public and Environment............................................................................ 14 5.1.9 Notification ................................................................................................ 14 5.1.10 Failures...................................................................................................... 14 5.2 Cleaning ...............................................................................................................15 5.2.1 New Construction ..................................................................................... 15 5.2.2 Retesting Main Line .................................................................................. 15 5.3 Pre-Test Logistics...............................................................................................15 5.3.1 Insulation................................................................................................... 15 5.3.2 Shelters..................................................................................................... 15 5.3.3 Temperature Recorders ........................................................................... 15 5.3.4 Fill Connections (Injection of Test Medium)............................................. 16 5.3.5 Pre-Test Organization .............................................................................. 16 5.3.6 Valve Integrity ........................................................................................... 16 6.0 TEST PROCEDURES...................................................................................................17 6.1 General................................................................................................................17 6.2 Filling ....................................................................................................................17 6.2.1 Fill Pigging ................................................................................................ 17 6.2.2 Fill Suction ................................................................................................ 18 6.3 Temperature Stabilization.................................................................................18 6.4 Pressurization .....................................................................................................18 6.4.1 Pressure-Volume Plots............................................................................. 18 6.4.2 Pressurizing .............................................................................................. 19 6.4.3 Leaks......................................................................................................... 19 6.5 Strength Test.......................................................................................................19 6.5.1 Relief of Test Medium............................................................................... 19 6.6 Leak Test .............................................................................................................19 6.6.1 Piping Buried During Testing.................................................................... 19 TERASEN PIPELINES (TRANS MOUNTAIN) INC. ENGINEERING STANDARDS AND PRACTICES MP4121 Revision 2 July 16, 1999 Page 3 of 23 Title: MAIN LINE HYDROSTATIC TEST PROCEDURE 6.6.2 Piping Exposed During Testing ................................................................ 19 6.7 Depressurizing and De-Watering.....................................................................20