1、DL/T1925-2018Inspection and Maintenance Specification of Instrument ControlSystem in Gas Turbine Combined-cycle Power Generation Plant1 ScopeThis specification sets force the items,methods and technical management requirements for the check,tests andmaintenance on instrument control(I&C)system in co
2、mbined cycle power generation unit.This specification is applicable to the check and operation maintenance of I&c system in combined-cyclepower generation plant with drum-type unfired heat recovery steam generator(HRSG).2 Normative ReferencesThe following referenced documents are indispensable for t
3、he application of this document.For dated refer-ences,only the edition cited applies.For undated references,the latest edition of the referenced document(including any amendments)applies.GBIT 2624.2 Measurement of fluid flow by means of pressurs diferential devices inserted in circular cross-section
4、 conduits running full-Part 2:Orifice platesGB/T 2624.3 Measurement of fluid flow by means of rre,sure differential devices inserted in circular cross-section conduits running full-Part 3:Nozzles and iuri nozzlesGB/T 15135 Gas Turbines VocabularyGB/T 18604 Measurement of natural gas fiow by gas ultr
5、asonic flow metersGBIT 21391 Measurement of natural gas j!ow by turbine metersGB/T 26863 Terminology of monitoring and control system of thermal power stationGBIT 30370 Guide of primary frequency control test and performance acceptance for thermal powergenerating unitsGB/T 34578-2017 Technical requi
6、rements for operation,maintenance and test of instrumentation andactuating equipment in thermal power plantDL/T 261 Reliability assessment techniques guidance of thermodynamic automatic system for fossil fuelpower plantsDL/T 571 Guide for operation and maintenance of phosphate ester first-resistant
7、fluid used in power plantDL/T 656 Code for acceptance test of turbine control system in fossil fuel power plantDL/T 657 Code for acceptance test of modulating control system in fossil fuel power plantDLIT 658 Code ofpractice for acceptance test ofon-off control system in fossil fuel power plantDL/T
8、659Code for acceptance test of distributed control system in fossil fuel power plantDL/T 701 Terminology of thermodynamic automation for fossil fuel power plantsDL/T 774 Overhaul maintenance code of instrumentation control system in thermal power plantDL/T 1056 Technical supervision guide for instru
9、ment and control system in power plantDL/T1210Code for performance test and acceptance of automatic generation control in fossil fuel powerplantDL/T 1340 Emergency handling guidance for distributed control system in fossil fuel power plantDL/T 5004 Guide for furnishing test apparatus,maintenance device and architectural area of fossil power