DL/T 438-2016
The technical supervision codes for metal in fossil-fuel power plant (English Version)
- Standard No.
- DL/T 438-2016
- Language
- Chinese, Available in English version
- Release Date
- 2016
- Published By
- Professional Standard - Electricity
- Status
- 2024-04
- Replace By
- DL/T 438-2023
- Latest
- DL/T 438-2023
- Replace
- DL/T 438-2009
- Scope
- This standard specifies the scope of components for metal supervision in thermal power plants, the items, contents and corresponding criteria of inspection and supervision. The inspection and supervision of metal parts of waste heat boilers, steam turbines and generators of gas turbine power plants can be implemented with reference to this. This standard applies to the supervision of the following metal components: a) High-temperature pressure-bearing components with operating temperatures higher than or equal to 400°C (including main steam pipes, high-temperature reheat steam pipes, superheater tubes, reheater tubes, headers and tees ), and small tubes connected to pipes and headers. b) Steam guide pipes and contact pipes with working temperatures higher than or equal to 400°C. c) Steam-water separators, water storage tanks and pressure vessels of drums and once-through boilers with working pressures higher than or equal to 3.8MPa. d) Pressurized steam and water pipes and components with a working pressure higher than or equal to 5.9MPa (including cold wall pipes, economizer pipes, headers, desuperheating water pipes, drainage pipes and main water supply pipes). e) Steam turbine shaft, impeller, blades, rags, bearings and generator shaft, retaining ring and fan blades. f) Bolts with working temperature higher than or equal to 400℃. g) Cylinders, steam chambers, main valves, regulating valves, nozzles, partitions, partition sleeves and valve housings with operating temperatures higher than or equal to 40°C. h) Low-temperature reheat steam pipelines with longitudinal welds for units of 300MW and above. i) Boiler steel structure.
DL/T 438-2016 Referenced Document
- GB 50764 Design code of power piping for power plant
- GB 5310 Seamless steel tubes and pipes for high pressure boiler
- GB 713 Steel plates for boilers and pressure vessels
- GB/T 11263 Hot rolled H and cut T section steel*， 2017-05-31 Update
- GB/T 1591 High strength low alloy structural steels*， 2018-05-14 Update
- GB/T 16507.2 Water-tube boilers—Part 2: Materials*， 2022-03-09 Update
- GB/T 16507.4 Water-tube boilers—Part 4: Strength calculation of pressure parts*， 2022-03-09 Update
- GB/T 16507.5 Water-tube boilers—Part 5: Fabrication*， 2022-07-11 Update
- GB/T 16507.6 Water-tube boilers—Part 6: Inspection, testing and acceptance*， 2022-03-09 Update
- GB/T 17394.1 Metallic materials.Leeb hardness test.Part 1:Test method
- GB/T 19624 Safety assessment of in-service pressure vessels containing defects*， 2019-06-04 Update
- GB/T 20410 Steels for turbine bolts at high temperature
- GB/T 22395 Specification for design of boiler steel structures*， 2022-07-11 Update
- GB/T 3274 Hot-rolled plates、sheets and strips of carbon structural steels and high strength low alloy structural steels*， 2017-02-28 Update
- GB/T 5677 Castings—Radiographic testing*， 2018-09-17 Update
- GB/T 5777 Automated full peripheral ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of longitudinal and/or transverse imperfections*， 2019-06-04 Update
- GB/T 7233.2 Steel castings—Ultrasonic testing—Part 2:Steel castings for highly stressed components*， 2023-05-23 Update
- GB/T 8732 Steels of blade for steam turbine
- GB/T 9443 Steel and iron castings—Liquid penetrant inspection*， 2019-08-30 Update
- GB/T 9444 Steel and iron castings—Magnetic particle inspection*， 2019-08-30 Update
- NB/T 47008 Carbon steel and alloy steel forgings for pressure equipment*， 2017-03-28 Update
- NB/T 47010 Stainless steel and heat-resistant steel forgings for pressure equipment*， 2017-03-28 Update
DL/T 438-2016 history
- 2023 DL/T 438-2023 Technical Supervision Regulations for Metals in Thermal Power Plants
- 2016 DL/T 438-2016 The technical supervision codes for metal in fossil-fuel power plant
- 2009 DL/T 438-2009 The technical supervision codes for metal in fossil-fuel power plant
- 2000 DL 438-2000 Technical supervision codes for metal in thermal power plants
