Rock accident prevention

When the rock drill hits the eye, wind and water pipes often fly out to injure people; the pumice loosely shakes and hurts the workers; the steel braze hits the blind blasthole, and the residual drug blasts and wounds. In order to prevent the above accidents, the following precautions should be taken:

1. Before drilling, you should have equipment and tools, such as lighting equipment, long and short crowbars, rock drilling equipment and tools.

2. Strictly implement the “knocking and asking top” system, carefully check whether there is loose pumice in the working space, whether the bracket is damaged or abnormal, and if it is found, it should be dealt with immediately. When handling, it should be carried out from the safe place from the outside to the inside. When handling, the personnel should stand in a safe place and use the long handle tool.

3. When the blasthole is opened, the amount of intake air should be reduced, and the amount of intake air should be increased after the drill head is drilled into 3-5 cm. The drill, wind drill and drill stand should be kept on the same vertical surface when the eye is drilled. The drill should be kept at the center of the blasthole to ensure that the blasthole is straight and reduce the friction between the drill and the eye wall. When you are eye-catching, the person holding the wind drill should stand on the side of the side of the wind drill, close to the wind drill, do not let the wind drill shake left and right to avoid broken brazing. In case of broken brazing, it is necessary to quickly hug the rig to prevent the drill rod from entering and leaving the wound.

4. After shooting, it is necessary to check in time whether there are blind cannons, residual explosions, problems found, and timely and correct treatment. It is strictly forbidden to make eyelashes along the residual eye.

5. Do not dry your eyes. When drilling, you must first open the water and then open the wind. When stopping the drilling, you must first stop the air and stop the water. The water supply should be appropriate to reduce the occurrence of dust.

PVC Non metallic Liquid Tight Connector

PVC No-nmetallic Liquid Tight Connector descriptions:


1.No-nmetallic Liquid Tight Connector-Straight
2.UL list
3.Straight Nonmetallic liquid-tight connectors are used to terminate andseal Liquid -Tight Flexible Nonmetallic Type B Conduit to either an oil-tight, liquid-tight or rain-tight box or enclosure.Connectors can beused with tapered thread femaleentry or unthreaded knock-out using the provided sealingwasher and locknut.
4. Resists Salt Water, Weak Acids, Gasoline, Alcohol,Oil, Grease and Common Solvents
5. No Disassembly Required
6.Reusable

liquid tight fittings

Pipe Fittings Sizes:


pvc pipe sizes chard id od inner diameter outer diameterAs mentioned in a previous blog post about PVC pipe outer diameter, PVC pipe and fittings use a nominal system for standard sizing. This is so all parts with the same size in their name will be compatible with each other. All 1" fittings will fit on 1" pipe, for example. That seems pretty straightforward, right? Well here's the confusing part: the outer diameter (OD) of PVC pipe is greater than the size in its name. That means that 1" PVC pipe will have an OD that is greater than 1", and a 1" PVC fitting will have an even larger OD than the pipe.

The most important thing when working with PVC pipe and fittings is the nominal size. A 1" fitting will fit on a 1" pipe, regardless of whether either one is schedule 40 or 80. So, while a 1" socket fitting has an opening wider than 1" across, it will fit on a 1" pipe because the OD of that pipe is also greater than 1".


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