Weak current College】 【go; water supply and drainage and HVAC common specifications in the mandatory provisions of the Rollup 3 --- Power By】 【China power house network.

<br> Third, the construction of water supply and sewerage and heating engineering construction quality approval standard "GB500242-20023.3.3 basement or underground structure wall have pipeline crossing of waterproofing measures should be taken. Request for strict proof, must adopt a flexible waterproof .casing. 3.3.16 various pressure piping systems and devices to the hydraulic test should be done, non-pressure piping systems and equipment should be water test. 4.1.2 use feedwater piping must be commensurate with the pipe fittings. Domestic water supply system of .the material must meet drinking water standards. 4.2.3 production water system piping in delivery must be washed and disinfected, and sampling inspection by the relevant authorities, in line with national standards for the drinking water before use. Inspection methods: inspection departments provide test .reports. 4.3.1 indoor hydrant system after installation should take the roof level (or the water tank compartment) test fire hydrant and first floor for the second branch of the test, the test-fire hydrant do meet the design requirements for qualified. Test .method: test checks in the field. 5.2.1 hidden or buried in drainage piping in covert testing must be done before, the irrigation water height shall be not less than the bottom and the top edge of the sanitary appliances or underlying the ground level. .Test method: full water water drop 15min, then filled with the liquid not observed 5min, pipeline and interface does not have the leakage is qualified. 8.2.1 pipeline installation slope, when design is not annotated, should satisfy the following requirements: 1 gas ., water and heating to the flow of pipeline and steam, water and steam pipes of the flow and slope of the condensate pipeline should be 3 ‰, shall not be less than 2 percent; 2 gas, water reverse flow of hot water heating piping and .steam, water reverse flow of steam pipe, slope should not be less than 5 percent; 3 radiator pipes of the gradient should be 1 ‰, slope to be detrimental to the exhaust and discharge. Test method: observation, level tape, pull cord, .length of check. 8.3.1 radiator group, as well as the entire factory heat sink before installing hydraulic test should be conducted. Test pressure as design without requires should be working pressure 1.5 times, but no less than 0.6Mpa. Test method: test .of time is 2 ~ 3min, pressure drop and no penetration does not leak. 8.5.1 underground laying of the coil part should not be buried. Test method: covert front site view. 8.5.2 coil concealed hydraulic test must be carried out before ., the test pressure is the pressure of 1.5 times, but no less than 0.6Mpa. Test method: voltage 1h pressure drop is not greater than 0.05Mpa without penetration does not leak. 8.6.1 heating system is installed, pipe insulation hydraulic test should .be carried out before. The test pressure must meet the design requirements. When the design is not annotated, should satisfy the following requirements: 1 steam, hot water heating system, should work with system vertex pressure 0.1 Mpa for water pressure test, and test .the system vertex pressure less than 0.3 Mpa. 2 high temperature hot water heating system, the test pressure should work for system vertex pressure 0.4 Mpa. 3 use of plastic and composite tube hot water heating system, should work with system vertex pressure 0.2 Mpa for .water pressure test, and test the system vertex pressure less than 0.4 Mpa. Test method: the use of steel and composite pipes of the heating system should be in the test pressure in the pressure drop under 10min not greater than 0.02 Mpa pressure down to work ., not permeability after checking not leak; the use of plastic pipes of the heating system should be in the test pressure in the pressure drop under 1h not greater than 0.05 Mpa, and buck to working pressure 1.15 times voltage 2h, pressure drop is not greater .than the Mpa, while 0.03 connections not permeability, not leak. 8.6.3 system flush completed should be filled with water, heating conduct test running and debugging. Test method: observation and measurement of room temperature should meet the design requirements. 9.2.7 .water pipeline in completed, must be carried out on the pipe to clean, potable water pipes must be disinfected after rinsing, meet drinking water hygiene requirements. Test method: observation of irrigation water turbidity, view the relevant departments of the inspection report. 10.2. .1 drainage pipe grade must be meet design requirements, is strictly prohibited without slope or down-slope. Test method: use level, line and gauge the amount of the check. 11.3.3 pipeline processing end should pass water, heating conduct test running and .debugging. When you do not have the heating conditions, should be postponed. Test method: measurement of the thermal water at the entrance to the building and return water temperature and pressure. 13.2.6 boiler steam, water system after installation, hydrostatic test must .be carried out, the hydrostatic test pressure shall be consistent with the requirements of the table 13.2.6. 13.2.6 hydraulic test pressure table provides the time device name working pressure P (Mpa) test pressure (Mpa) 1 boiler body P < .0.591.5P but not less than 0.20.59 ≤ p ≤ 1.18P +0.3 P> 1.181.25P2 can be fractional economizer p1.25p + 0.53 non-pressure boiler pressure 0.2 note ① working pressure P refers to the steam boiler drum work pressure ., hot water boiler and boiler rated water pressure; ② cast iron boiler pressure test with hot water boilers; ③ unconfined boiler pressure test pressure is the pressure during the test 0.2Mpa should remain unchanged. Test method: 1, in the test pressure in the .pressure drop under 10min 0.02 Mpa; and then reduced to working pressure, pressure drop, and do not leak; 2, observation checks, no residual deformation, pressure parts metal wall and shall, in addition to the weld bead of water and water spray. .13.4.1 boiler and economizer safety valve set pressure and adjustment should be consistent with the requirements of the table 13.4.1. The boiler is equipped with two safety valves, one of the tables in the higher value of the constant pressure, another lower value .to the constant pressure. Equipped with a safety valve, you should press the lower value of the constant pressure. 13.4.1 safety valve set pressure table provides the working equipment safety valve opening pressure (MPa), 1 steam boiler pressure + 0.02 MPa pressure .+ 0.04 MPa2 hot water boiler 1.12 times the pressure of work, but not less than the working pressure + 0.07 MPa1.14 times the working pressure, but not less than the working pressure + 0.10 MPa3 economizer 1.1 times the working pressure inspection methods: inspection .certificate for pressureBook. 13.4.4 boiler of water level alarms and over-temperature alarm and interlock, overpressure protection device must be installed according to the design requirements are complete and valid. Test method: start, linkage experiment and test records. 13.5.3 .boiler in the oven, cooking stove, there should be a continuous load of 48h pilot, at the same time should be safety valve set pressure of the hot state inspection and adjustments. Test method: check the oven, cooking stove and try to run the .whole process. 13.6.1 heat exchanger should be based on the maximum working pressure of the hydraulic test 1.5 times, steam section should not be less than steam for steam pressure 0.3 Mpa; water should not be lower than 0.4 Mpa. Test method: test .pressure, the pressure to keep 10min..