A pressure plug is a common way of working to stop a leak or overflow in a pipe, container, or equipment during maintenance, repair, or inspection. Testing standards for pressure closure are designed to ensure the stability, effectiveness and reliability of pressure closure work to protect workers and equipment from potential hazards and damage.

2. Preparation for testing

1. Determine the sealing target: Specify the pipe, container or equipment that needs to be sealed with pressure, including its size, material and working pressure.

2. Choose the right plugging material: according to the characteristics of the working environment and the plugging target, choose the right plugging material to ensure its pressure resistance, corrosion resistance and high temperature resistance.

3. Prepare necessary tools and equipment, including plugging tools, pressure gauges, and leak detection instruments.

4. Formulate a work plan: make clear the steps, tasks and responsibilities of the plugging work to ensure the orderly progress of the work.

3. Blocking work flow

1. Stability measures: Before sealing with pressure, it is necessary to ensure the stability of the working area, including providing adequate ventilation, setting warning signs and prohibiting entrances, and wearing personal protective equipment.

2. Preparation: Check the integrity and suitability of the sealing material, clean the surface of the sealing target, and ensure that there are no leakage points and impurities.

3. Plugging operation: According to the plugging process requirements, use the appropriate tools and equipment to plug. Ensure that the sealing material completely fills the sealing target and is in close contact with the surrounding material without gaps.

4. Pressure test: After plugging is complete, use tools such as pressure gauges to test the plugging target to detect whether there is leakage or pressure instability.

5. Leakage detection: Leakage detection equipment is used to detect leakage around the blocked target to ensure good sealing effect and no leakage point.

6. Finishing work: After the plugging work is completed, the tools and equipment used will be cleaned and arranged to ensure the cleanliness of the work site.

4. Evaluation of test results

1. Plugging effect evaluation: Evaluate the plugging effect according to the pressure test and leak detection results. If there is leakage or pressure instability, you need to plug again.

2. Stability assessment: Evaluate whether the stability measures in the process of sealing with pressure are proper, and whether there are operational risks and potential dangers.

Five, stable roll precautions

1. Do not use improper tools, materials, or equipment during sealing with pressure.

2. Operators must wear personal protective equipment, including mirrors, gloves, protective clothing, etc.

3. The plugging work must be carried out under the guidance and supervision of technical personnel.

4. During the plugging process, do not exceed the pressure limit of the plugging material.

5. After plugging is complete, pressure test and leak detection must be carried out to ensure good plugging effect.

6. If the blocked object is found to have abnormal conditions (such as damage, corrosion, etc.), it must take timely measures to repair or replace.

Vi. Summary

The testing standard of sealing with pressure is an important basis to ensure the stability, effectiveness and reliability of sealing with pressure. Before plugging with pressure, you must make adequate preparations and follow the standard procedures. Evaluate the sealing effect through pressure testing and leak detection, and conduct stability assessment to ensure the quality and reliability of the work. At the same time, the operator must strictly abide by the stability precautions to ensure that no accidents and accidents occur during the work process.