Can holes be made in explosion-proof walls to accommodate instrument cable trays?
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Can holes be made in an explosion-proof wall to pass instrument cable trays? How to do a good job with the sealing at the back
If it really has to be worn, the cost is too high; it’s recommended to go outside instead and then come back.
No, it’s not possible; either one has to go through the cable trench underground, and that trench also needs to be filled with sand. Either go around to the outside to set up a cable shaft and then enter.
This is a blast-proof wall that also serves as a fire wall. Is a blast-proof wall the same as an explosion-resistant wall? An explosion-resistant wall cannot have any openings
It’s a conceptual error; there is no such term as an explosion-proof wall in this industry. There are blast-resistant walls
Typical cabinet rooms are designed with shielding walls and blast-resistant walls; outside these walls, there are also blast valves for the heating and ventilation systems. For electrical and instrumentation components, design firms usually arrange for cable trays and instrumentation cable ducts to be installed below the outdoor ground level, with openings provided at the locations where these ducts emerge from the blast-resistant walls (which are made of reinforced concrete). It is necessary to discuss this with the civil engineering team to determine the most appropriate modifications. Normally, cables that go outside are buried underground
Explosion-proof walls must not be punctured, otherwise the holes in the wall will become vents for the release of explosion forces. Furthermore, unlike fire resistance, there is no method to evaluate whether post-sealing is also blast-resistant.
Explosion-proof walls must not have any openings; their structure cannot be damaged
The civil engineering section states that it is an explosion-proof wall as well as a fire wall, with a fire resistance rating of 4 hours. When I asked the civil engineering staff, they said that after openings are made for cable trays, those areas need to be sealed tightly
There is no such thing as an explosion-proof wall; it should be an explosion-resistant wall. Holes cannot be made in such walls; if cables need to be passed through, ducts or shafts must be used, as mentioned above.