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As a consultant my newest client has taken me into a new industry sector, meat packing. The factory received headless carcases from abattoirs, not much blood about, the factory is very modern and 'clean' (gets cleaned down well), skilled butchers, manual handling is minimised, the employees keep active working in temperatures below 10 degC.
So far the hazards that have mainly attracted my attention are slippy floors, access to freezer rooms not controlled/monitored, and sawing carcases.
Actually there is not much sawing, they mainly use bandsaws and operators are doing so safely.
But there is a circular saw that hangs at head height, and is oriented so that the blade is horizontal. It's not used continually. But when it is used bone and flesh are 'atomised' (for want of a better word) at head height. Nobody wears a mask/rpe.
What are the hazards of inhaling bone/flesh/blood?
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Rather than the bone/blood I’d be more worried about the exposure to biological agents. You can assume that any meat, no matter how clean has some microbiological contamination which might pose a risk. The problem is that this risk is difficult to quantify: you won’t know (and it would be difficult to find out) what organisms are present and what actual risk they pose.
It is not just a respiratory risk but a general hygiene risk, as well, with the splatter being deposited on surfaces including the operative themselves. It is hard to judge what the risk from the splatter might be as some microorganisms can remain hazardous for ages and other die very quickly once they have dried out. As precaution I’d think about some sort of respiratory protection as least while using this circular saw. I am not sure if this this can be controlled by the use of LEV.
You have raised good point but I don’t think that there is a categorical answer.
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Thanks A Kurdziel.
As I thought, it's going to be difficult to know what the hazards are, but yes it just seems an unsafe process without any respiratory protection. The microbiological contamination subject is where I am struggling.
In fact lack of general ventilation is likely a hazard to everyone in the butchery/processing area. They keep the processing area (20 people) at just above 5degC but there seems to be no fresh air input other than the opening of doors to other parts of the factory. Having a general ventilation system would cost them energy.....
So there are issues for The Workplace Regulations, regulation 5, as well as COSHH and HaSaWA of course.
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xRockape,
The blade looks about 50% guarded. It's above head height, one hand on the handle/button, the other hand is much lower down holding the carcase steady.
Only watched the process once this week. I think the saw is cutting a bone that sometimes doesn't get pulled out by the machine process that all carcases undergo. Hanging this carcase on a hook is one of the few manual handling tasks, but it's not a frequent task, not all carcases need this sawing.
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Thanks A Kurdziel, I'll check those sites when I get to my PC
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A Kurdziel, the US reports are possibly alarming but it's hardly appropriate to bring them to the attention of my client, I would need some acknowledgement of those or other studies in UK/HSE.
Pete, yes I soon obtained a copy of the BMPA guidance, a good reference that my client should know about, we'll see. It will be good to have more than just HSE references in reports.
For first time in many years I've been down and out for a week with the flu, doc wouldn't prescribe antibiotics, and I'm realising now that at my >60 age it's going to take me longer to recover from such things.
Mrs W blames the visit to the meat-packing factory :o)
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¨Creutzfeldt-Jakob disease (CJD)
Background Information
CJD is a very rare, fatal neurodegenerative
disease, which is thought to be caused by
the build up of an abnorm
al form of the na
turally occurring ‘prion’ protein in the
brain.
There are four types of CJD (variant, spor
adic, inherited and iatrogenic), of which
only variant CJD (vCJD) is an
occupationally acquired disease.
CJD belongs to a group of Transmissible
Spongiform Encephalopa
thies (TSEs) which
affect humans and animals.
Organism:
Bovine Spongiform
Encephalopathy (BSE) agent
Incidence and Transmission:
The first reported case of vCJD was in
1996 and since then there have been alm
ost
200 deaths in the UK.
vCJD is strongly linked to exposure to – and
in particular consumption of – beef or
beef products from cattle suffering from BSE or ‘mad cow disease’. The first reported
case of BSE in cattle in the UK was in
1986. BSE was spread via feed made from
rendered material from infected cattle or
sheep, a process which has been banned
since 1988.
There has never been a reported case of
disease following occupational exposure
(despite more than 184 600 cases in cattle
in the UK), however it remains a theoretical
risk. It is thought the most
likely route of occupational
infection would be via broken
skin and it is thought unlikely that the di
sease would be transmitted via aerosols.
There is no evidence of spread from person
to person, but this remains theoretically
possible.
Occupations and processes where vCJD may present a risk
Occupational exposure to vCJD
may occur in those who:
are in contact with infected animals; or
work with materials or products from in
fected animals, in particular brain,
spinal cord and lymphatic tissue
http://www.hse.gov.uk/ag...oses-data-sheets/cjd.pdf
http://www.nhs.uk/Condit.../Pages/Introduction.aspx
http://www.patient.co.uk...irosis-and-weils-disease
https://www.gov.uk/gover...ist-of-zoonotic-diseases
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Thanks JohnM. Yes I recall the BSE/vCJD outbreak.
The carcasses here have no head or organs, so no brain and no lymphatic tissue, spinal column is there but not in the saw work. There's a process that pulls the carcass apart.
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The lymphatic system exists in other areas besides the head, the head containing, obviously, less than the rest of the carcass.
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Yes, I said the carcasses have no organs with lymphatic tissue. John.
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two aspects from what I can gather; 1) direct contact with the saw 2) contact with animal product coming off the saw.
I'll leave the guarding to yourself, as hard to comment without seeing in situ.
As far as the "spatter" goes I would think about using a full face visor. This would cover and protect both the eyes and mouth/nose etc. Small piece of bone in the eye hurts. Remember though that vision will be obscured fairly quickly, particularly with fat smearing, so may need to provide some wipes etc to clean nearby for operatives.
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JohnW
I sent you the information: what you do with is upto you but remember that biological agents are no respecters of national boundaries: if (big if) it is a genuine problem in the US it will be an issue everywhere. Furthermore just because the HSE is silent on an issue does not mean that it is not an issue. It is the responsibility of the duty holder find out as much as they can from whatever reliable sources exist, not just HSE guidance.
My previous employer got into trouble with the HSE over BSE. The HSE guidance at the time was vague, implying that the agent was in HG2(Hazard Group 2) but when, following an accident, the HSE investigated our set up they said that our classification was wrong and that we should have been managing the material as if it was HG3. They got a Crown Censure for that. The guidance was updated and BSE was reclassified as HG3 AFTER they got done.
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Kurdziel, yes of course I should take note of any publications on this subject and at least make client aware. Must learn from the BSE episode and what led to it.
James, yes a full face visor seems appropriate, I'll have to observe further if Rpe needed
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Quite interesting and somewhat amusing reading the posts here. I spent 6 months in an abattoir as part of my Environmental Health training. Before that I was a Meat Scientist and before that a Microbiologist. One thing I would say is beware what research papers you read. it easy to do research and produce a paper. This does not mean that every scientist agrees with it. Research needs to be consistent and reproducible to be meaningful. If the carcase is completely de-skinned and eviscerated, the main problems of contamination comes when they wash it (usually soft jet washing). this activity alone can produce 1000's of aerosols contaminated with bacteria - typically coliforms and enterobacteria, which can be pathogenic. face shields may be useful for macro particles, but not for microorganisms which would require a P3 filter as minimum. Viruses are a possibility, but not significant - remember the HSE want us to be "sensible & proportionate". Manual handling when handling carcases are important and also consider what if the saw gets blocked and fails? What safe system is there of unblocking it? Also consider electrical shocks from electrical equipment that may be poorly earthed. Consider Puwer and Electricity at Work. The environment is very wet ! There is a plenty to consider, but only at risk of boring you all sorry. For example have you considered what would happen if the animal wasn't stunned correctly? It could turn on people. I have seen this myself.
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…”Viruses are a possibility, but not significant…”
How do you know viruses are not an issue? The problem with environmental microbiology is the tendency to focus attention on easy to culture organisms like the aforementioned enterobacteria and coliforms or even worse “indicator species”, which may(but may not) demonstrate the presence of really nasty bugs. The real problem with this is that we do not know what organisms are present on any carcass; we can only make an educated guess. Hopefully in the future using molecular techniques we might have a way to quickly scan for whatever is there but that is currently in the realm of the ‘Star Trek tricorder.’
So a risk might exist and so based on current knowledge some action needs to be taken with risk identified and managed. It could be as simple as using respirators, with a suitable protection factor, but you have to include it in the risk assessment.
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AS, as I said earlier, at this client the 'carcasses' have no head, no organs, no skin, very little blood. There is a lot of washing, splashing water, wet floors, in fact last two hours of every shift is washing down the facilities, conveyors etc
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