2　Normative References

Clauses contained in the following documents constitute clauses of this Standard by being cited by this Standard.For dated cited documents，subsequent amendments（excluding corrections）or revisions are not applied for this Standard.However，parties who reach agreements based on this Standard are encouraged to investigate the possibility of applying the latest edition of the documents.For undated references，the latest version is applicable for this Standard.

GB/T 3323　　　Radiographic examination of fusion welded joints in metallic material

GB 7251　　　Low-voltage complete switch equipment and controller

GB 8923-1988　　　Rust grades and preparation grades of steel surfaces before application of paints

GB 18241.1-2001　　　Rubber lining　Part 1　Anticorrosive lining for equipment

GB 18241.4-2006　　　Rubber lining　Part 4　Lining for flue gas desulfurization

GB 50026　　　Code for engineering surveying

GB 50168　　　Code for construction and acceptance of cable levels electric equipment installation engineering

GB 50169　　　Code for construction and acceptance of earthed device electric equipment installation engineering

GB 50171　　　Code for construction and acceptance of panels，cabinets and secondary circuit wiring in electric installation works

GB 50212-2002　　　Specification for construction and acceptance of anticorrosive engineering of building

GB 50257　　　Code for construction and acceptance of electric device for explosion

atmospheres and fire hazard electrical equipment installation engineering

GB 50270-1998　　　Code for construction and acceptance of continuous conveyer equipment installation engineering

GB 50275　　　Code for construction and acceptance of compressor，fan and pump installation engineering

GB 50303　　　Code of acceptance of construction quality of electrical installation in building

GB J149　　　Installation work for electric devices code for erection and acceptance of busbar device

DL/T 679　　　Code for welder technical qualification

DL/T 752　　　Code of the welding on dissimilar steel for power plant

DL/T 776　　　Technical requirements for insulation material of thermal power plants

DL/T 819　　　Code of welding heat treatment for power plant

DL/T 820-2002　　　Code of ultrasonic inspection section for butt welds of pipes

DL/T 821-2002　　　Code of radiographic examination of butt welded-joints of pressure steel pipes

DL/T 868　　　Code of welding procedure qualification

DL/T 869-2004　　　Code of welding for power plant

GB 5047-1995　　　Code of erection and acceptance of electric power construction，section of steam boiler set

DL/T 5161.1-5161.17　Specification for construction quality checkout and evaluation of electric equipment installation

DL/T 5210.1　　　Specification for construction quality acceptance and evaluation of electric power construct Part 1:Civil construction engineering

HG/T 2640-2004　　　Application specifications for glass flake lining

HG/T 20677-1990　　　Chemical processing equipment of rubber lining