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[MW:2084] RE: 2041] Bolting issues on Flange joints

By Materials & Welding
I remember having same problem during my days in construction. What we
did is weld the stud bolt on the other side of the valve flange
connection. I presume the problem here is inserting the nuts because the
bonnet stbn is constricting the space for valve flange.

Hope this could help

Faigal Fernando Agbanawag
Sr. Piping Engineer
Clough ZFP
T+966 3 8828818 Ext: 241
F+966 3 8828622
M+966 (0) 507780576


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-----Original Message-----

From: materials-welding@googlegroups.com
[mailto:materials-welding@googlegroups.com] On Behalf Of ptvvtp
Sent: Tuesday, April 28, 2009 8:21 AM
To: Materials & Welding
Cc: Aaron.D'Cunha@akersolutions.com; pv.shivkumar@akersolutions.com;
pradeep.kumar2@akersolutins.com
Subject: [MW:2041] Bolting issues on Flange joints


We have the following scenario in one of our projects . Due to
inadequate space availability caused by the valve body studs, the
piping flange studs could not be inserted into the flange joint.. The
case in question is a 10" , 900# Flange which carries 16 no.s studs.
It is not possible to insert 2no.s stud bolts in the flange joint.
Does B16.5 mention anything about the safety / operability / validity
of a flange joint which has two no.s stud bolts less in a 16 stud
flange joint ?


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