Re[2]: [PipingDesign] Trunnion on an Elbow

From: <Tushar>
Date: Mon Sep 09 2002 - 06:52:00 EDT

Hello Friends,

Use of trunion on elbow is generally accepted practice. Some companies do not allow at all and some companies do allow on conditional basis.

You can use it for temp. below 150 deg C (No problem at all.) But it's not good to use it above 150 deg C. The reason is simple that we can take advantage of flexibility associated with the elbow in stress analysis. Also I would suggest to avoid it above 60 deg C for Stainless Steel and Alloy Steel lines.

Better go for a support at the pipe (horizontal or vertical as well).

Thanks and regards.

Tushar Zope
Piping Engineer
Foster Wheeler Eastern Pte. Ltd, Singapore Ph: 6890 0837 Fax: 6223 2989

Disclaimer
'The information contained in this email and the files transmitted with it are confidential and intended only for the use of the individual or entity to whom they are addressed. If you have received this message in error, please immediately notify the sender and delete the mail. The views or opinions presented in this email are those of the author and do not necessarily represent those of the company. The recipient should check this email and any attachments for the presence of viruses. Foster Wheeler Eastern Pte Ltd accepts no liability for any damage caused by any virus transmitted by this email.'

____________________Reply Separator____________________

Subject: Re: [PipingDesign] Trunnion on an Elbow Author: Sachin_Bapat@ril.com
Date: 9/7/02 8:46 AM

        If you go through piping design books you will find that
        trunnion on elbow
        reduces the flexiblity of trunnion & also it modifies the value
        of sif &
        flexibility factor . piping design book (M W kellogg) chapter 4
        -local
        components   expilicitly derives relation for the same, thats
        why most of
        design companies dont prefer trunnion on elbows & use of pads
        for trunnion
        on elbow is highly discarded as all these reduce flexibility of
        trunnion ,
        which may be of concern in rigid layouts
        hope this answers your query.
        regards
        sachin





        Yahoo! Groups Sponsor
        ADVERTISEMENT

        <http://rd.yahoo.com/M=229441.2336363.3766536.2225242/D=egroupw
        eb/S=1705083319:HM/A=1189560/R=0/*http://www.bmgmusic.com/acq/e
        e/q6/enroll/mhn/10/>

        Texas Flange - a good source for information on industrial
        flanges, all they ask is for referrals for designs they help
        with.
        877-610-8924.
        www.texasflange.com
        =====================================================
        unsubscribe: PipingDesign-unsubscribe@yahoogroups.com

        Your use of Yahoo! Groups is subject to the Yahoo! Terms of
        Service <http://docs.yahoo.com/info/terms/>.

Received on Mon Sep 09 06:52:00 2002