Coding Question

[Shaz]

Hello lovely peeps. I thought someone on here might know the answer to this one. Petrol vapour alarms... those irritating things which chirp non stop which have suddenly sprung up all over the place. Is one of these delightful gadgets an absolute requirement for coding or is it surveyor discretion ?

Thanks:-)

[Poly]

"Any compartment which contains a gas consuming appliance or any compartment into
which flammable gas may leak or accumulate, should be provided with a hydrocarbon gas
detector and alarm"

[Searider]

Poly,
That's not the wording. I think you're getting gas confused with petrol.

Shaz
This is the wording from MGN280 regarding hydrocarbon detectors for petrol engined boats:

7.3.2 In locations where an accumulation of hydrocarbon vapours is likely to occur, a suitable
hydrocarbon gas detector should be fitted under or adjacent to the tank (located in a safe
place). The detector components, and any other electrical equipment residing in the vapour
area should not be capable of causing ignition.

It's not at the surveyors discretion. If you have a compartment where fuel vapour could acumulate then you have to have to have a HC Detector.
If you've only got portable tanks on deck then there's no compartment where fuel vapour could acumulate so no requirement for a detector.

[Poly]

Originally Posted by Searider

Poly,
That's not the wording. I think you're getting gas confused with petrol.
.

Yeah sorry - must not copy and paste at 1am!

[Shaz]

Thanks, so all boats will in built fuel tank. I will add it to the ever increasing shopping list :-)

[Dry_Doc]

Our surveyor advised that if you add floor level vents to the compartment that the fuel tank is in, then it is no longer a sealed space where vapour can collect.