Whats this?

[stephen1974]

Came across a sign yesterday that read

If warning light is on uncoded entry

If warning light is off adopt code 1 entry procedure

Blue and white sign with an exclamation mark at the top above the writting.

It was on a sewage pumping station. Ive never seen it before and a colleague who has been in the industry for 15+ years has never seen it either.

[Messy]

Is it anything to do with build up of gases within a space and restricting entry when such an atmosphere exists ?

Just a guess -

[stephen1974]

It would be, hydrogen sulphide, but no one know what the hell its on about. We dont have any codes of entry

[stephen1974]

Its exactly that, the problem is no one knows what it means. No one has seen one before. No one knows of any 'codes of entry', It doesnt even make that much sense when you read it. Why would you have an entry procedure when there is no alrm but not one for when there is an alarm.

[Keith1983]

Any chance you could share a photograph? i have a colleague who worked in water utilities and he might just be old enough to tell us!

I'll only tell him that we're using him for his age after I've shown him not before!