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#1 Posted : 13 February 2009 12:21:00(UTC)
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Posted By Melanie Fellows
Is there a set pressure at which specialist training is required for pressure washing?

I've trawled the Internet with no real answers.

I now know that over 1700 bar is UHP, and between 680 bar and 1700 bar is HP.
So obviously these would need specialist, but what about for pressures under this level?

Many thanks,
Mel
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#2 Posted : 13 February 2009 14:00:00(UTC)
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Posted By David Matthew
Try the water jetting association who publish a couple of guidance documents which should point you in the right direct. Dependant on the pressures involved specialist PPE may also be required as water jet injuries can be nasty.
Regards
David
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#3 Posted : 13 February 2009 15:21:00(UTC)
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Posted By Melanie Fellows
I had a look on their website before posting the question, but didn't see anything.
I'll go back and take a closer look!
Thanks,
Mel
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#4 Posted : 13 February 2009 15:32:00(UTC)
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Posted By David Matthew
Unfortunately they are priced publications unless you have access to Barbours or similar
Regards
David
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#5 Posted : 13 February 2009 15:39:00(UTC)
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Posted By Melanie Fellows
Ah, well that's me stumped then!

Thanks anyway,
Mel
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#6 Posted : 13 February 2009 16:01:00(UTC)
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Posted By stephen d clarke
Hi,
I think the Water Jetting Association includes all pressures up to 1700 bar as HP above this is UHP and even at a few bar pressure water will penetrate the skin. According to the WJA recommendations operators should have appropriate training and work in teams where the ratio of experienced to inexperienced operatives never falls below 50%.
Steve
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#7 Posted : 15 February 2009 19:27:00(UTC)
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Posted By Alan Nicholls
Melanie have you read INDG68

Advised instruction and training for this type of equipment Steam cleaners and water pressure washers. Risk assess if you think you have a better solution to the HSE's guidance. You know what happens if it goes wrong.

For HP and UHP jetting go to www.waterjetting.org/fil...002_Health-Safety_uk.pdf

You may find some interesting reading if you purchase the Watterjetting Blue Code book (codes of practice).

UHP uses less volume of water than HP but,
The jet velocity of 2,500 barg UHP system is in excess of 2,400kmph.

Training and supervision without exception. SSoW, Special PPE also by specific RA

Regards Alan

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#8 Posted : 16 February 2009 13:05:00(UTC)
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Posted By Melanie Fellows
Very comprehensive information and advice, thank you.

Mel
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#9 Posted : 16 February 2009 18:58:00(UTC)
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Posted By Steve Clark
Try,

INDG261 Pressure Systems;

Safety of pressure systems. Pressure Systems Safety Regulations
2000. Approved Code of Practice L122 HSE Books 2000
ISBN 0 7176 1767 X

Pressure Equipment Regulations 1999 (SI 1999 No 2001)

Pressure Systems Safety Regulations 2000 (SI 2000 No 128)
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