PRESSURE TEST METHOD FOR MAIN STEAM LEAD PIPE OF TURBINE

摘要

PURPOSE: To reduce the manhours for working and manufacturing an engine frame which is required for a test on site by omitting installation of a blank cap for pressure test. ;CONSTITUTION: A main steam lead pipe 1 is connected to regular positions of a main stop valve/main steam control valve 4 and a turbine casing inlet 3. A pressure test jig 5 is arranged on the turbine casing inlet 3, while a pressure test cover 6 and pressure test jigs 7, 8 are arranged on the main stop valve/main steam control valve 4. A pressure test jig 9 is arranged on the main steam lead pipe 1. Water is poured into the main steam lead pipe 1 for carrying out pressure test.;COPYRIGHT: (C)1994,JPO