[PSUBS-MAILIST] Hp valves

[Alan James via Personal_Submersibles]

Hi Brian,I questioned G.L. on a number of items in thier rules for submarines& there are some grey areas that you would have to argue the point overwith an inspector.One general rule is that no one failure can cause a major event.If the pipe failed at that elbow & you couldn't stop the flow of HP air,what sort of pressure could you be left with in the hull?Would you be able to blow the ballast tanks if you lost your airfrom that failure or do you have a redundant air supply?Cheers Alan


 

      From: Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org>
 To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
 Sent: Saturday, January 23, 2016 6:34 AM
 Subject: Re: [PSUBS-MAILIST] Hp valves
   
ABS says " as close as possible"  I guess I'm ok with a short nipple coming off a elbow. Brian

--- personal_submersibles at psubs.org wrote:

From: Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org>
To: "PSubs " <personal_submersibles at psubs.org>
Subject: [PSUBS-MAILIST] Hp valves
Date: Wed, 20 Jan 2016 08:34:43 -0800

Is there any distinction as to how close a HP shut off valve or check valve has to be to the hull penetration so as to meet ABS requirements?   Can there be a short nipple between an elbow and the valve for instance? Brian Cox_______________________________________________Personal_Submersibles mailing listPersonal_Submersibles at psubs.orghttp://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
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