metering vault classification

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fields2004

Member
Situation:
A municipal has residential or commercial gas (natural gas) meters installed in vaults under the sidewalks and the vaults are covered with solid metal doors. I assume there are regulator present in the vaults.

Q1. Would the vaults be classified?
Q2. If so, which classification is most apppropriate?

Thanks
 
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petersonra

Senior Member
Location
Northern illinois
Occupation
engineer
fields2004 said:
Situation:
A municipal has residential or commercial gas (natural gas) meters installed in vaults under the sidewalks and the vaults are covered with solid metal doors. I assume there are regulator present in the vaults.

Q1. Would the vaults be classified?
Q2. If so, which classification is most apppropriate?

Thanks
Click to expand...

Is it just a meter, or are other things present?
 
M

muskiedog

Senior Member
Location
Minnesota
It would be for personnel working in if the following applies

It would be for personnel working in if the following applies

Not per NEC put per OSHA it would depending on the following:

Is large enough for a person to enter and perform assigned work, has an entry and exit opening that may be limited in size and/or number and is not intended for continuous human occupancy

You would have to review the space for the following potntial hazards.
Hazardous atmospheres
Engulfment hazards
The internal configuration of the confined space
Physical hazards
Structural hazards
Electrical hazards
Mechanical hazards
Biological hazards
Radiation hazards
 
P

petersonra

Senior Member
Location
Northern illinois
Occupation
engineer
None of this makes it a classified area for electrical purposes.

muskiedog said:
Not per NEC put per OSHA it would depending on the following:

Is large enough for a person to enter and perform assigned work, has an entry and exit opening that may be limited in size and/or number and is not intended for continuous human occupancy

You would have to review the space for the following potntial hazards.
Hazardous atmospheres
Engulfment hazards
The internal configuration of the confined space
Physical hazards
Structural hazards
Electrical hazards
Mechanical hazards
Biological hazards
Radiation hazards
Click to expand...
 
F

fields2004

Member
Gentlemen,

Thanks for the replies.

I'm trying to obtain photos and list of what is in the vault.

Lets pick this up after I have more info.
 
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