Rank: Forum user 
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Just had a strange request from our engineering department asking at what temperature a surface should have a "hot surface" label on it.
As far as I know there is nothing written down saying at this temp it should be labeled, but I am just after the general opinion.
The engineer is off for a week so I can't get any more information as to why he is asking yet.
Thanks
Richard
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Rank: Super forum user 
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A hot surface of 60 degrees can cause a burn to the skin. But we don't label all surfaces that are 60 >, that is ridiculous.
I have seen signs on chip shop counters, or in hot food display cabinets and can see the sense in that, but would not expect to see one on a radiator, cooker, furnace, kettle etc.
I know some people don't understand the concept, but it does come down to common sense risk assessment, and the engineer should be able to make that judgement for him / herself.
This sounds like a disagreement between the engineer and a manager to me. I would ask what the issue was first and ask what their view is on the matter.
Steve
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Rank: Forum user 
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The extent of a burn from a hot surface is also dependent on the 'contact time' of the person etc as well as the actual temperature.
There is a British Standard on the matter, but sorry can't remember its number with out searching my collection.
The usual minimum temperature that can cause burns is usually quoted to be in the region of 40/45*C.
No I won't send it too you, as its copy right.
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Rank: Super forum user 
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Rank: Super forum user
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Hot surfaces are mentioned in HSG220 - Health and safety in care homes.
Hot surfaces
154 High temperatures of circulating water in heating and domestic hot water systems have also given rise to serious injuries and fatalities from contact with hot pipes or radiators. Where there is a risk of a vulnerable person sustaining a burn from a hot surface, eg radiator or pipe, then the surface should not exceed 43 °C when the system is running at the maximum design output.
http://books.hse.gov.uk/...alogueCode=9780717620821
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Rank: Super forum user 
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The duty rests with the Designer of the equipment, and the 'hierarchy of control' should be applied then.
Is this something your engineering shop are making, or something they've encountered?
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Rank: Forum user
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BS EN ISO 13732-1:2006
Ergonomics of the thermal environment. Methods for the assessment of human responses to contact with surfaces. Hot surfaces
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Rank: Super forum user 
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I usually wet my finger first, if it sizzles...it's hot!
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Rank: Super forum user
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Richard
Used to be a research paper on the RoSPA web site which compared materials temperature and contact time to risk of burns.
Some of this was aimed a domestic market (oven doors etc) but it did have some useful information on other surfaces. I have used this information in conjunction with risk assessment to decide what controls were needed - usual this would be additional guarding or reducing the temperature. If a surface is so hot that it could result in a Burn I don't see the point in a warning sign on its own.
Brian
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Rank: Super forum user 
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With this kind of query, I usually find that the person asking doesn't so much want a factual answer to the question, as to draw attention to something they see as a problem. So my response wouldn't be to try to answer the question, but just to ask more questions.
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Rank: Super forum user
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Ray does that mean you have burnt your fingers a few times then?
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