This standard specifies the basic principles, basic steps and commonly used life assessment methods for life assessment of thermal power unit components. This standard is applicable to the life assessment of key metal components of thermal power units of 50MW (inclusive) and above in thermal power plants. Thermal power units below 50MW can be implemented as a reference.
DL/T 654-2009 Referenced Document
DL/T 438-2009 The technical supervision codes for metal in fossil-fuel power plant
DL/T 439-2006 The technical guide for high-temperature bolt of fossil-fired power plant
DL/T 440-2004 The code of inspection and evaluation for existing boiler drum in fossil-fuel power plants
DL/T 441-2004 Supervision code for creep strain of steam pipe in high temperature and high pressure in fossil fuel power plant
DL/T 674-1999 The gradational standard of spherular pearlite for carbon steel No.20 used in fossil power plant
DL/T 773-2001 Spheroidization evaluation standard of 12Cr1MoV steel used in power plant
DL/T 786-2001 Standard of inspection and estimating carbon steel graphitiaztion
DL/T 787-2001 The gradational standard of spherular pearlite for 15CrMo steel used in fossil power plant
DL/T 820-2002 The code of ultrasonic inspection section for butt welds of pipes
DL/T 882-2004 The terminology of metallic speciality of fossil-fuel power plants
DL/T 884-2004 Power plant metallography inspection and assessment guideline
DL/T 939-2005 Guide for boiler tube monitoring and inspection in fossil fuel power plant
GB/T 15248 The test method for axial loading constant-amplitude low-cycle fatigue of metallic materials
GB/T 19624-2004 Safety assessment for in-service pressure vessels containing defects