70e safety question

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jimbo123

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Does underground duct banks get labeled during in arc flash survey ? Where would these labels be placed since there really isn't anywhere to place them ? People do enter these for repairs or inspections so this is a great way to make sure they enter when safe .
 
jimbo123 said:
Does underground duct banks get labeled during in arc flash survey ? Where would these labels be placed since there really isn't anywhere to place them ? People do enter these for repairs or inspections so this is a great way to make sure they enter when safe .
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Unless there are switching devices associated with the undergound duct banks in underground vaults why would you think there would be any arc flash hazard associated with them? The hazard occurs WHEN such switching operation is executed, so the warning label could be placed on or at the switching device itself.
 
The reason being is in the pass the cables have been below water , the feeders are exposed and to me are a hazard. The cables have burned apart and have been repaired a couple of times before. I believe if a worker has to go below he should know the hazards before hand. Deenergize. Multible 600-800amp 480 volt feeders.If you are
surrouned by energized cables thats a hazard.
 
jimbo123 said:
The reason being is in the pass the cables have been below water , the feeders are exposed and to me are a hazard. The cables have burned apart and have been repaired a couple of times before. I believe if a worker has to go below he should know the hazards before hand. Deenergize. Multible 600-800amp 480 volt feeders.If you are
surrouned by energized cables thats a hazard.
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In your OP you have asked about arc-flash survey and labeling, not damaged, unsafe equipment or installation. Arc flash labeling is not the appropriate response.
 
I am not trying to mislead anyone labels contain flash and shock protection, this would be helpfull to the entrents. I , ll be much clearer next time.
You are correct and thanks for you response very help full.
 
Minimum

Minimum

The labeling is the minimum required. The owner can always post the arc flash level for the various conductors in a handhole or vault; even if there is no operable equipment. The owner can also post requirements for vault entry that exceed OSHA hazardous entry permit levels. The owner can post as many "DANGER" signs as they want. (Not that anyone reads them!)
 
beanland said:
The labeling is the minimum required. The owner can always post the arc flash level for the various conductors in a handhole or vault; even if there is no operable equipment. The owner can also post requirements for vault entry that exceed OSHA hazardous entry permit levels. The owner can post as many "DANGER" signs as they want. (Not that anyone reads them!)
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The OP's unfolding story added this bit:

"The reason being is in the pass the cables have been below water , the feeders are exposed and to me are a hazard. The cables have burned apart and have been repaired a couple of times before. I believe if a worker has to go below he should know the hazards before hand. Deenergize. Multible 600-800amp 480 volt feeders.If you are surrouned by energized cables thats a hazard. "

Either they have been adequately repaired or there are exposed live electrical parts.

In the first case, no warning signs are required.
In the later case the space contains indeterminable level of shock and calculable flash hazard, but it is unsafe to enter under any energized condition because of the indeterminable component.
 
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