Safety protection techniques for pipe opening

Pipe hole for pipe wall scaling, corrosion of pipeline and pipeline deformation for general specifications, oil, petrochemical, natural gas, chemical systems flammable, toxic and harmful to the production line, all must ensure the security of the importance of pipe openings, here is to introduce an important method to improve the safety of the pipeline opening:

1, the opening of the pipe, the first step is to open the valve to the maximum caliber, so as to facilitate the opening of the bucket knife.

2, bore machine stabilized, and then began to feed hand wheel clockwise, center drill (drill) top to the main line, half of the week (to prevent reverse handwheel knife).

3, ready to start the motor, clockwise rotation of the hand wheel feed, feel drilled through the pipe wall, cut off the power supply. After cutting off the power supply, if you can manually feed it, it means that it has been drilled.

4, the hand wheel clockwise idle feed, when the bucket knife top to the wall after the reversal of half of the week (to prevent breakage).

5 、 start the motor with the pressure opening machine again, turn the handwheel slowly and then feed it. Feel the bucket knife, cut off the pipe wall, cut off the power supply. After cutting off the power supply, hand feed, if the handwheel does not move, that cutting is not completed, to reverse the half week handwheel, restart the motor, and then continue to slow feed. When the motor cuts off the power supply, the handwheel can rotate feed, indicating that the cutting of the hole has been completed.

6. With pressure opening machine, turn the handwheel counterclockwise, return the knife to zero, turn off the gate valve, remove the opening machine, and open the hole.