--- In [email protected], "Tony Brooks" <[EMAIL PROTECTED]> 
wrote:
> 
> I must question what you have just said about room sealed fridges. 
> I have correspondance that indicates your Boss has other ideas in 
> that a Thetford 3 way fridge has been ruled non-compliant.
> 
> Either you are allowed non-room sealed units or you are not. The 
BSS 
> seems to be saying you can have them unless you replace them. This 
> was the situation until the scheme was revised, but I thought that 
> had been removed.

Hi,
In a particular case, a boat was examined which had a Thetford 3-way 
fridge installed. It had a modified flue and did not have an 
isolation valve to a LPG supply-line hose. It is the latter point 
that prevent the issue of the certificate, not the flue check 
associated with the risk of carbon monoxide poisoning.

However, concerning the flue which is checked at item 8.10.2 i.e. Is 
the flue complete, properly fitted and maintained -  Flues must show 
no obvious signs of modifications not in accordance with the 
appliance manufacturer's recommendations? This is one of the 
BSS `advice' checks whereby owners are strongly encouraged to act 
upon a fault being identified but that the failure to meet the check 
will not prevent the issue of a BSS certificate.  This is because 
the responsibility to ensure the safety of those on board the boat 
rests with the owner and the BSS examination is used to help guide 
owners in this respect.

On this boat, the examiner was so concerned about the safety 
implications of what he found that he contacted Graham Watts, BSS 
manager, for his help to get view from the manufacturers as to 
whether this fridge could be safely installed in a boat.

His concerns were three fold; 
1) the extended and 'unauthorised' flue; 
2) the installation instructions stating clearly that the fridge was 
intended solely for installation in caravans and motorhomes by way 
of complete room-sealing with in a sealed enclosure; and finally,
3) the greatly restricted air-flow route to the burner as the flat 
bottom of the fridge sat directly onto carpet.  

One of our major concerns is the carbon monoxide risk presented by 
the 'extended flue'.  It is known for extended flues to allow 
condensation to run back down the flue onto the burner which 
eventually rusts or becomes blocked, leading to incomplete 
combustion and the production of carbon monoxide. As broadly 
mentioned before, there have been at least three carbon monoxide 
deaths on inland waterways associated with the use of LPG fridges in 
the past ten years.

Graham contacted Thetford to ask if this fridge could be fitted 
safely in a boat as far as they were concerned.  Their answer was 
unequivocal: `….not advising installing our refrigerators in boats 
due to installation difficulties and tilting issues.  Our 
refrigerators are designed for the caravan and motorhome market and 
we will not accept warranty on boat installations.  If our 
installation instructions are followed then end users/ engineers 
should not be installing our refrigerators into boats as this 
application is not mentioned.  I will however find out if any 
chandlers are purchasing our product and advise them accordingly…'. 

It is also worth stressing that all relevant British and European 
small craft LPG installation standards (eg ISO 10239 and PD5482 Part 
3) call for the use of room-sealed LPG appliances of this type when 
adding or replacing them. They also require the manufacturer to 
designate their use in the marine environment and state any boat-
specific installation instructions.  Engineers fitting such 
appliances should be aware of this aspect.

In such typical circumstances of this examination, where owners do 
not, or cannot by their absence at the time, act on the `advice' 
item, the examiner is expected to issue a BSS warning notice 
outlining the clear danger presented to people coming aboard the 
boat and label the appliance accordingly. 

It may also be worth considering whether in the event of a gas 
appliance causing a death or injury under such circumstances, if the 
owner's insurance policy would cover losses in this situation? From 
our conversations with the insurance trade, we think this is a 
relevant question.

Thanks for giving us the opportunity to expand on this issue Tony

Regards
[EMAIL PROTECTED] Office
Go boating – Stay safe


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