Code for Inspection of Power Station Boiler Pressure Vessels DL 647-2004

Author: National Development and Reform Commission of the People's Republic of China
Publisher:
Publish Date: 2004-07-01
Features: This standard specifies the content and corresponding requirements for inspection work in three stages: equipment manufacturing, installation, and in-service for power station boilers, pressure vessels in thermal systems, and main steam and water pipelines.
This standard applies to power station boilers, pressure vessels in thermal systems, and main steam and water pipelines with a rated steam pressure of 3.8 MPa or higher for power generation. Power station boilers, pressure vessels in thermal systems, and main steam and water pipelines with a rated steam pressure lower than 3.8 MPa may refer to this standard for implementation.