RE: fire water system

From: <Geoff>
Date: Fri Oct 03 2003 - 02:13:00 EDT

Ali,

The platform I am doing the water hammer analysis for is using Zeron 100 for the sea water lines. There is no reason that PE lined CS couldnt be used.

geoff
--- LIEZWSC@adma.ae wrote:

---

Geoff,

No. we have not tried the PE lines CS, actually I forgot to mention that I
work in the offshore. we have LP and HP fire system the HP max pressure reaches up to 120 psig. The problem is with the cement lining when it gets
break it become very susceptible to leak where salt water meets the SC pipe.

Regards,
Ali

> -----Original Message-----
> From: Geoff Stone DD&D Australia [SMTP:blenrayaust@yahoo.co.uk]
> Sent: Friday, October 03, 2003 7:22 AM
> To: <a href="/group/PipingDesign/post?postID=fHT0ZjOEobL5h9GEUHmnl5VkcxK5q2SWTAVCL97H0sLTGrQZZfSCPKPoeO2Epni0_YAw-qNg5Bqzq6Om7WiTHNrspkDO">PipingDesign@yahoogroups.com</a>
> Subject: Re: [PipingDesign] fire water system
>
> Ali,
>
> Fire water system underground have been installed using ABS or PE
> piping materials. For building cPVC has been used. Above ground
spiral
> wound 316 ss for large bore and dairy tube for smaller, up to 100mm
> diameter has proved cost effective.
>
> I am unsure if this complies with NFPA regulations however is used
> extensively in Australia.
>
> Have you tried PE lined carbon steel?
>
> Be careful that a waterhammer analysis is done because when the fire
> water pumps kick in you can experience high pressure transients. When
> they stop, particularly diesel sets, then transient pressures of a
> magnitude >design pressure can occur.
>
>
> Geoff Stone
> --- LIEZWSC@adma.ae wrote:
>
> ---------------------------------
> hi,
>
> we are using cement lined carbon steen for our fire water piping
> system, and
> we experience many localised metal deterioration and consequently
> leaks. Is
> there any solution for this or alternative material apart from GRP
> piping.
>
> Regards,
> Ali
>
>
>
>
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> Design Detail and Development (a division of Blenray Pty Ltd)
> We specialise in pipe network and waterhammer analysis, pipe stress
> analysis, the design of buried pipelines and thermoplastic pipe
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Information presented on this list is given as helpful advice, nonsense, carefully-considered calulation or any combination of the above. The intent is to spark discussion and encourage knowledge-sharing amongst professionals. If you blow yourself up by doing stuff remotely described by info gleaned from reading this list, you are an idiot.

Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.

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“ When you have eliminated the impossible, whatever remains, however improbable, must be the truth. ”

Sir Arthur Conan Doyle

Design Detail and Development (a division of Blenray Pty Ltd) We specialise in pipe network and waterhammer analysis, pipe stress analysis, the design of buried pipelines and thermoplastic pipe systems.

Overseas tel 61 2 402 35 2313 fax 61 2 8850 2313 mobile 0402 35 2313 Mail Address PO Box 1351 Castle Hill NSW 1765 Australia

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The New Yahoo! Shopping - with improved product search <a href="http://shopping.yahoo.com">http://shopping.yahoo.com</a> Received on Fri Oct 03 02:13:00 2003