This Part of DL/T 5210 specifies the relevant requirements in construction quality acceptance standard, quality evaluation of single project, quality evalution of single unit, and quality evaluation of overall project of the pipeline and system in thermal power generation project.
This Part is applicable to the construction quality acceptance and engineering quality evaluation of the pipeline and system in the constructed, extended and renovated thermal power generation projects with unit capacity of 300MW~1000MW.The construction quality acceptance and engineering quality evaluation of the pipeline and system in the 300MW and bellow thermal power generation project, conventional island of nuclear power station and power plant public part (BOP) may comply with this Part by reference.
2 Normative References
The following standards contain provisions which, through reference in this part, constitute provisions of this part. For dated reference, subsequent modification to (excluding correction to), or revisions of, any of these publications do not apply. For undated references, the latest edition of the normative document is applicable to this Part.
GB 50235—1997 Code for Construction and Acceptance of Industrial Metallic Piping
GB 50375 Evaluating Standard for Excellent Quality of Building Engineering
DL 5031—1994 The Code of Erection and Acceptance for Electric Power Construction (Piping Section)
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 852-2004 Guide for Boiler Start-up Commissioning Test
DL/T 869 The code of Welding for Power Plant
3 General Provisions
3.0.1 This standard is formulated with a view to intensifying construction engineering quality control in electric power industry, improving construction quality level, and unifying the relevant requirements in construction quality acceptance standard and evaluation for thermal power generation engineering.
3.0.2 The construction quality acceptance for thermal power generation project shall be conducted by inspection lot, subitem project, subsection project and unit project. The construction quality acceptance is only applied with a quality grade "qualified"; in case of any nonconformity, it shall comply with Article 4.1.12 in this Part.
3.0.3 The engineering quality evaluation shall be conducted for the projects with the "high quality" engineering objective.
3.0.4 The engineering quality evaluation shall be conducted by the three phases (stage) - single project, single unit and overall project.
3.0.5 The construction quality evaluation for single project shall be conducted upon that the construction quality acceptance for all unit projects is qualified and the collection and rearrangement of engineering technical document is completed, and the evaluation shall cover the whole work content before 168-h trial operation with full load.
3.0.6 The quality evaluation for single unit shall be conducted after the construction quality acceptance for all single projects and the 168-h trial operation of the unit with full load are completed and the environmental protection projects supported are normally put into operation. The synergic system shall be bought into the evaluation for the first unit.
3.0.7 The quality evaluation for overall project shall be conducted after the quality evaluation for all single units, the performance tests of the units and the engineering archives evaluation are completed.
DL/T 5210.5-2009 The following standards are cited：
