Intrinsic zone

[alexander jackson]

Morning Folks.
I am about to look at a job in a railway (steam loco) shed/workshop that has an inspection pit, currently there are no lights in it.
I assume that intrinsic lights need to be used in this pit, can anyone show me or link the regs for special locations on this one please.
Many thanks.

 

[James]

Not sure what you mean by intrinsic lights.
However, if the pit could be accidentally flooded then some IP67 or 68 light fittings may be the way forward.

If the pit is considered to be at risk of explosive gas buildup, the customer should be telling you and require you to install and work to different standards that are outside the remit of internet advice.

 

[alexander jackson]

Not sure what you mean by intrinsic lights.
However, if the pit could be accidentally flooded then some IP67 or 68 light fittings may be the way forward.

If the pit is considered to be at risk of explosive gas buildup, the customer should be telling you and require you to install and work to different standards that are outside the remit of internet advice.

The pit does contain a fair amount of grease and oil residue from under the steam locos so are EX lights needed, other than that the main fuels are coal and water. Not sure of the zones in a loco environment. There is also a sump pump to take any water out from the boilers should then need to get rid of any when undergoing repairs.

 

[snowhead]

I guess the O.P possibly either means the system where the light fittings are pressurised with a low pressure air supply and pressure switch and they cut off if the presure drops due to a fitting breakage.
I installed fluorescent lighing in some inspection pits in the 80's done that way.

Or explosion / unbreakable fittings.

This link might help,,

Why are ATEX Lights Required for Inspection Pits?

The reasons an Inspection Pit would require ATEX Lighting and how to identify the Zone Classification by assessing the presence of explosive atmospheres.

www.kellwoodlighting.co.uk

 

[alexander jackson]

I guess the O.P possibly either means the system where the light fittings are pressurised with a low pressure air supply and pressure switch and they cut off if the presure drops due to a fitting breakage.
I installed fluorescent lighing in some inspection pits in the 80's done that way.

Or explosion / unbreakable fittings.

This link might help,,

Why are ATEX Lights Required for Inspection Pits?

The reasons an Inspection Pit would require ATEX Lighting and how to identify the Zone Classification by assessing the presence of explosive atmospheres.

www.kellwoodlighting.co.uk

Many thanks for the link.

 

[freddo]

You would be wise to get some training first before undertaking any hazardous area installation work! : Qualifications - CompEx - https://compexcertification.com/qualifications/

After that get an ATEX design specialist to determine what areas are what zone and the equipment category required, select the equipment and fully design the installation. A detailed design is important as the installation must match the design exactly.

Hazardous area installations also require much more detailed, routine inspections.