Method to Increase Operating Pressure for Low-pressure Gas Pipeline

To meet the needs of gas field development and gas resource regulation for the gas to the eastern Sichuan and to increase the operating pressure for Weiwu Gas Pipeline (original design pressure is 4. 0 MPa, the actual pressure is 0. 1 - 1. 2 MPa due to mountain and high way crossing), the in-line pressure increasing program is made based on ASME B31. 8- 1997. According to the site increasing work requirements, safety measures and operation procedure are put forward.