It is a very hurtful thing to leak water leaks or leaks in the drainage pipes during home renovation. Therefore, understanding the knowledge of the house drainage pipes and mastering some techniques can help maintain and improve indoor environmental hygiene. Drainage piping refers to the system of collections and discharges of sewage, waste water and rainwater drainage pipes and their associated facilities. Including trunks, branch pipes, and pipelines leading to treatment plants, whether built on the street or anywhere else, as long as they are drainage pipes, they should be used as drainage pipe statistics. Then what is the standard for the inspection and acceptance of water supply and drainage pipes ?

Pipeline acceptance criteria

First, to the drainage pipe inspection

1. The quality of the water supply and drainage pipe and fittings must meet the standard requirements. The drain pipe should be made of rigid PVC drainage pipe and parts.

2. Before the work, it is necessary to check whether the original pipeline is unblocked, and then proceed with construction. After the construction, check whether the pipeline is unblocked. Concealed water supply pipelines should be inspected for water. Newly installed water supply pipelines must be pressure tested in accordance with the relevant regulations. There should be no leakage, and inspections can only be carried out in the next process.

3, the water pipeline should be temporarily sealed before the construction of the original pipeline, to avoid debris into the pipeline.

4. For the installation of the water pipe with an outer diameter of 25mm or less, a pipe card shall be installed at the corner of the pipe, water meter, faucet or angle valve, and pipe end 100mm. The installation of the pipe card must be firm. Pipes shall be threaded with exposed threads at their junctions. The installation shall be completed with a pipe clamp in a timely manner. There shall be no loosening between the pipe and the pipe or valve.

5. The position of various valves installed should meet the design requirements and be easy to use and maintain.

6. Joints, valves, and piping connections should be tightly closed without leakage. The slope of the pipeline should meet the requirements.

7. The kind of pipeline must not change the original nature of the pipeline.

8. The route arrangement should meet the design requirements. The pipeline installation should be fixed firmly, no looseness, leading, the valve is installed flat, flexible opening, smooth water, and the water meter is running normally. Acceptance by visual inspection and feel.

Second, the pipeline acceptance techniques

1, water supply and drainage works. As the galvanized pipe is apt to rust, foul, not keep warm, and will be frozen, it will be phased out. At present, the most used are plastic aluminum composite pipes, plastic steel pipes and PPR pipes. These tubes have good plasticity and toughness, and the insulation does not crack or foul. The use of special copper joints or thermoplastic joints guarantees quality assurance and low energy consumption.

First of all, it should be checked whether the drainage pipe is open, and tap water is opened to see if there is any leakage. Then take a look at the water pressure, observe whether the drainage speed is satisfactory, and then take a glass of water under the faucet. Observe whether there is rust. If you think there is a problem with the quality of the water supply, you can ask the developer to provide the water quality inspection certificate issued by the epidemic prevention department; Whether the position of the drain pipe is reasonable and whether there is any trace of water seepage around it, the place where the water leaked will usually leave a stain on the wall. Everyone can inspect it as a matter of fact.

2, electrical pipeline project. The best is galvanized copper pipe, but if it is not suitable for use on the first floor, because of the serious corrosion of copper rust on the wire skin; second is the galvanized steel pipe, that is, galvanized pipe, the use is not bad, but also There is the possibility of rust, but the corrosion of the wire is not great; the cheapest should be PVC, and sometimes it is easy to block the bent position.

3. Gas pipelines: Under normal circumstances, gas pipelines should be taken out of the pipeline, so that once a gas leak can be discovered in time, it is easy to maintain, does not leave security risks, the degree of inspection of water, electricity, gas meters by the way when the inspection of the house inspection is zero.

4. Whether the bathroom exhaust hole has been left well is a link that should not be neglected in the acceptance. The ceiling can be opened to check whether the pipeline is installed in place.

Third, the correct procedure for pipeline acceptance

Pipeline engineering includes gas pipelines, water supply and drainage pipelines, air pipelines, etc. The construction quality of these pipelines has a direct impact on our daily lives and must be accepted with care. The pipeline acceptance procedure is as follows:

1. Check whether the gas meter is installed, whether the gas meter is equipped with the number of gas alarms, check whether the natural gas has been entered, check the number of the gas meter, record it with paper, and later deduct the gas fee. Whether to set a dedicated exhaust pipe.

2. Check the pipeline gas You can use the smoked paper roll to put it near the alarm device to see if the alarm device is sensitive. The alarm sound and light prompts to close the air solenoid valve at the same time. If it can't move, repair it in time.

3, to see if the balcony has a floor drain or downpipe. Pour some water in the floor drain to see if the water is open. Although the floor drain is small, its function cannot be overlooked. When there is no floor drain or outlet pipe during a heavy rain, the rainwater will diffuse into the living room, causing great trouble to the owners' lives.

4, kitchen and toilet should be close to the ventilation channel. The kitchen and toilet should be arranged near the air passages, which will facilitate the rapid discharge of odors, exhaust gases, etc., and keep the indoor air clean. Fire extinguishment after ignition with a paper roll, place about ten centimeters below the mouth of the flue, and see if the smoke rises to the mouth of the flue.

5, the bathroom should leave vents under the ceiling. When you stay on the ceiling, you need to check the hand lamp to see if it has the installation property. At the same time, use the method to measure the pumping force. Check the presence of construction waste with a flashlight in the flue and vent. Toilets with windows in the corridor should be equipped with security nets. If there are no windows, there should be ventilation holes, ventilation holes should be set under the ceiling.

6, check the pipe installation, smooth and sealed: shake the heating pipe and the water pipe by hand, should be firmly fixed. If loose, fix it again. Open the water valve to see if the drainage is smooth (otherwise, the water pipe is blocked by the construction garbage). At the same time, use the toilet paper to wipe the bottom of the upper and lower pipes to see if there is any leakage.

Pipeline acceptance considerations

1, water pipes: galvanized pipe teeth less than 8 teeth, raw material with more than 6 winding wrapped tightly, not rotten teeth. Plastic pipe or aluminum plastic pipe Note that the installation of special tools, in strict accordance with the provisions of the operation, the final pressure test (pressure test is greater than 24 hours).

2. Pay attention to the discharge of water pipes from the wall. Do not leave the floor, under the floor tiles, or at high altitude. If you must go to the floor and floor tiles, the installation of the water pipes must be straight and no joints are allowed. The valves should be installed on the ground. The water inlet pipes of the buckets should be equipped with triangular valves.

3, electrical circuit emissions, in addition to hollow floor, but also to wear the pipe, such as the use of PVC pipe, the wall thickness of not less than 1.2mm. The electric circuit discharges the wall body and does not go under the floor or the floor tile.

4, gas (natural gas) to use the bright tube, control slope, joints to use thick white linen paint, do not use raw materials, but also to test gas.

5. In the end, don’t forget to let the construction team leave the wiring diagrams, especially the dark lines. Be sure to leave accurate electrical wiring diagrams in case you need urgent repairs.

Drainage pipe leak solution:

1 Scrub the surrounding area with alcohol, acetone and other organic solvents to remove dust and oil.

2 If the drain pipe is a cast iron pipe. Use iron sandpaper to remove the old paint or floating rust on the surface of the iron pipe, and then scrub it again with alcohol and other solvents to remove the floating dust;

3 Dry the sand and washing area with a hair dryer and keep it in a slightly hot state.

4 Apply to a sanded, cleaned surface with a paste of pasteur, adhesive, or the like. Follow the adhesive's instructions for use.

Before repair, it is best to make a greeting with the upstairs and agree on a time period without water, so as to ensure that there is no water seepage during the glue application period, and that the glue can be successfully cured and cured.

Editor's summary: The above is the drainage pipeline inspection and acceptance criteria. Opinions on the decoration of drainage pipelines are for reference only. I hope to be helpful to everyone. If you want to know more related information, you can pay attention to this website information.

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