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Tel: 18004275506

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Zip code: 124200

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Address: Dawa Lingang Economic Zone, Panjin, Liaoning


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What are the requirements for the test of pressure, water pressure and leakage of steel skeleton PE composite pipes?

Release date:2018-07-19 Author: Click:

What are the requirements for the test of pressure, water pressure and leakage of PE steel skeleton composite pipe?


In recent years, with the continuous occurrence of large and small pipeline accidents, the safety and quality of pipeline construction has gradually been concerned by people, especially for the staff often engaged in pipeline construction, in the construction safety also began to pay attention to. You know, after the completion of the pipeline construction, in order to prevent leakage, burst and other conditions, we need to carry out a series of safety tests on the pipeline, these tests in operation must be strictly in accordance with the provisions of construction, construction quality can be put into use after all qualified. Today we will tell you about the steel skeleton PE composite pipe in the air pressure, water pressure and leakage test must comply with what specific provisions.


Air pressure test


(1) First of all, the experimental pressure of the pipeline receiving internal pressure should be 1.15 times that of the planned pressure. When the planned pressure of the pipeline is greater than 0.6 MPa, it is necessary to have the rules of the planning documents or with the consent of the construction unit before the pressure test can be carried out with gas.


(2) Before the experiment, it is necessary to add pressure gradually and slowly. When the pressure rises to 50% of the experimental pressure, if no abnormality or leakage is found, the pressure will be stepped up by 10% of the experimental pressure, and the pressure will be stabilized for 3.0 minutes until the experimental pressure is reached.


(3) the time of stopping pressure should be determined according to the need of leak detection operation.

PE steel skeleton composite pipe

 

Two. Hydraulic pressure test


(1) clean water should be used in experiment, and air should be discharged when irrigation.


(2) When the pressure of the pipeline is boosted, when it is found that the gauge needle of the tension spring manometer swings unsteadily and the boost is slow, it should be re-exhausted and then boosted.


(3) The experimental pressure is 1.25-1.5 times of the planning pressure, and the value is 1.5 when the planning pressure is less than or equal to 1.0 MPa, and 1.25 when the planning pressure is greater than 1.0 MPa.


(4) during the experiment, the ambient temperature should not be lower than 5 C, and when the ambient temperature is below 5 C, anti freezing measures should be adopted.


(5) when carrying out the pressure test, the restricted area shall be designated, and the irrelevant personnel shall not enter.


(6) when the leak is found during the experiment, no pressure can be applied. After eliminating the shortcomings, we should retest.


(7) The net pressure of the experimental medium shall be taken into account in the experimental pressure for the pipeline with a large contraposition difference. The experimental pressure of the liquid pipeline shall be based on the highest point of pressure, but the lowest point of pressure shall not exceed the acceptance of the components of the pipeline.


Three. Leakage test


(1) the pressure of leak test should be planned pressure.


(2) leak test is carried out after the pressure test is qualified.


(3) leak test is not conducted after passing the pressure test and without dismantling the pipeline after pressure test.


(4) leak test should check valve stuffing box, flange, vent valve, exhaust valve, drain valve and so on.


(5) it is qualified to check the leakage without foaming agent.


The above three items are the steel skeleton PE composite pipe must be tested after the completion of the construction, we must pay attention to the actual specific operation process must strictly abide by the relevant regulations, safety is not trivial, in the detection process of any unqualified inspection procedures must be carefully improved, can not leave any construction quality. Security risks, we hope to help everyone.


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Liaoning Zhong Ji Technology Co., Ltd.

Contact: Manager Wang

Tel: 18004275506

Eighteen billion four million two hundred and seventy-five thousand five hundred and nine

Tel: 0427-6515296

Fax: 0427-6515299

Mailbox: Wang35055@163.com

Zip code: 124200

Address: Dawa Lingang Economic Zone, Panjin, Liaoning

PE钢骨架复合管