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Posted By Jason911
Does anyone have any experience of these exploding within a coffee machine, refrigeration unit, or compressed air appliance?
I have recently taken over responsibility for these and am struggling to know exactly how I am expected to know which pieces of our hundreds of units of plant contain them. i am considering sending a letter to all our vendors, suppliers and maintenance companies requesting this information, but as some we longer deal I am not holding my breath.
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Posted By Mitch
Jason,
Our insurers send out a surveyor, annually, to inspect all our pressure vessels, limited in our company to air receivers and central heating boilers, It will be worth speaking to your insurers they should have a list from previous inspections, if not request a surveyor to come out and advise.
Mitch
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Posted By holmezy
Jason
why are you worried about coffee machines, frdges or air appliances exploding?
The pressure regs wern't written with coffee machines or fridges in mind. Air appliances like what?
Think you're worrying about nothing?
Holmezy
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Posted By MP
I'm with Holmezey
It's been a long time since I heard of an exploding fridge
MP
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Posted By Catman
Hi Jason
I would suggest working from your asset register (if you have one, if not this would be a good place to start).
Going through the register you should be able to group the appliances such as steam, refrigeration, compressed air etc.
You can then break it down, if the refrigeration plant is below 25kw it can be discounted, above 25kw it needs a WSE.
Any sealed vessel holding steam is applicable such as coffee making equipment would be applicable, an urn, which is not sealed, is not applicable.
Air systems will be applicable depending on the pressure and capacity, 250 bar/litres being the trigger point for WSE with these.
Working like that, you should, over time be able to drill down what you need to do. The insurance company surveyors are normally a good source of advice.
CAIS11 or the guidance on the regulations and free leaflets from the HSE on this subject would be a useful reference point for starters.
Cheers
TW
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Posted By Michelle L Dugard
I'm confused about this too...
We have 2 x Multitubular heating boilers running at 5.17 bar and a cold water booster set running at 10 bar.
Do we require a written scheme?
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Posted By Catman
Hi There
Only if the water is at a temperature of above 110 degrees C.
Have a look at the HSE guidance for further info.
Cheers
TW
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Posted By Christopher Kelly TechIOSH MIIRSM AIEMA
Jason
Some coffee machines do have pressurised steam vessels within them (eg gaggia type). The old type 'Stills' water boiler (vertical silver one) is a steam pressure vessel.
Speak to an insurance company who have an engineering inspection dept - give them details of the equipment (get all the manufacturer's information together and fax it to them if possible) they will be able to tell you fairly quickly. Don't talk to the manufacturer as they probably don't understand UK Pressure Systems requirements and will tie you in knots or give you the wrong answer.
If it is a 'relevant fluid' operating over 0.5bar / 250Bar/litres it is a pressure system. With regards to hot water if it is operating above 100degreesC / can flash off as steam (ie is at 100degreesC - not just water vapour).
Most refrigeration / air conditioning isn't a pressure system but if any system combined power is above 25kW (or equivalent horsepower) and pressure above 0.5bar / 250Bar/litres then it will be a pressure system. If it's ammonia then it almost certainly will be - doubt you have any of this.
Hot water heating is generally not a pressure system as it cannot flash off as steam, however pressurised systems can have a pressure vessel on them - again an insurance company will advise you.
Trust of help,
Regards,
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