RE: [PipingDesign] Clarification regarding API 610 Analysis

From: <Sajit>
Date: Sat Oct 23 2004 - 23:43:00 EDT


Anchoring near the pump nozzles will leave a short length of pipe between the pump and the anchor. This effectively becomes 2 anchors (the pump being the other) on a straight length. This will theoritically create a very large end reaction on to the pump nozzle. Though it may be preventing the transfer of moments and forces from the other side of the piping.

I had a similar problem, an explanation that I got was that this expansion will be taken by the compression of the gasket. The gasket is already compressed to have the sealing, any more compression may fail the gasket in compression, I think. In the end I did not have those anchors.

This problem will be more significant if the temperatures are elevated as in your case of WHR.


-----Original Message-----
From: Thermal Systems Design [] Sent: Saturday, October 23, 2004 2:47 PM To:
Subject: [PipingDesign] Clarification regarding API 610 Analysis

From : K.V.Subba Rao <>

To :

Sub : Clarification regarding API 610 Analysis (CAESAR)

Sent : Sat, 23rd Oct '04

Dear Sir,

We are engaged in Design, Manufacture, Erection and Commissioning of WHR Systems.

We are having certain doubts about API 610 Analysis.

We are anchoring at pump suction flange Anchor was provided and ensure that no forces
and moments are transferred to pump suction flange.

And no API 610 Analysis required because we are anchoring near the flange. A anchoring support will be provided.

To understand we are enclosing here with Input file for the same. Can you comment we are correct or not.

Your early reply will be highly appreciated.

With Best Regards,

For Thermal Systems (Hyd) Pvt. Ltd.

K.V.Subba Rao

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Thermal Systems, Hyderabad, India

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