Re: [PipingDesign] Re:Utilization of Jackscews

Our problem is that we are allowing the utilization of Jackscrews to facilitate flange separation for maintenance. Joint assemblies which often require frequent separation include orifice plates, spectacle plates, spacers, screens, and drop-out spools. The question which came out from the Project Group and plants, what are the sizes NPS to utilize the jackscrewes?, Is there any API recommended practice or ASME document governing here? i had received feedback from Hafiz & Hasan, however, it seems there is no designated standard govern here, all depends on the project specs. which differ from location to another  
Thanks

• On Mon, 12/8/08, bruce.r.raymond@fluor.com <bruce.r.raymond@fluor.com> wrote:

From: bruce.r.raymond@fluor.com <bruce.r.raymond@fluor.com> Subject: Re: [PipingDesign] Re:Utilization of Jackscews To: PipingDesign@yahoogroups.com
Date: Monday, December 8, 2008, 6:40 AM

Jackscrews have been around just about forever - The concept is great, but in the real world the locations where jackscrews are common (spec blinds, orifice plated, etc.) are normally non operational. The reality is half the time jackscrews are not properly protected, and suffer thread corrosion, with actual operability requiring a lot of WD-40 + Muscle. Nowadays hydraulic flange spreaders do a better job, faster, and with less man-hours involved. Just my point of view - awaiting your feedback. Bruce R. Raymond
Senior Design Supervisor
Fluor
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[Non-text portions of this message have been removed] Received on Mon Dec 08 11:14:00 2008