Re: [MW:18254] corrosion inside valve,NACE

Dear Rateesh,

 

What is the time frame between dispatch and receipt of these valves ? What is the end application of thses valves ? ie. process fluid and service. Gate valves generally be used for drain/ vent purpose.  Is there any visible sign of corrosion on outside of these valves also ? Check corrosion allowances of these lines sizes also.

 

Pl take a call after due consideration. Rejection is simplest, but would not be optimum solution for this case.

 

regards,

 

Jignesh Rana.

On Mon, Jul 22, 2013 at 6:20 PM, Ritesh Rajput <riteshgrajput@gmail.com> wrote:

Dear My Friends.

please Check Whether these Corrosion is removable or not by Simple Spirit Immersed clothes . if It is Removable, then remove it Properly .Reinspect again .

Second option.go to Mill who manufactured These Valve , and get confirmation Letter which describe that these is not Serious Defect , and it was not effect to Valve Life ,

And Rearrange ,other visit of TPI and solve it .

Corrosion is never be strong  Point Reject any Material.

Regrads

Ritesh Rajput

On Mon, Jul 22, 2013 at 8:27 AM, Ravikumar, Thattekere Siddappa <travikumar@flowserve.com> wrote:

Water may be of Hydro test  not cleaned properly , But this issue will essaly resolved by cleaning this area by rust remover Maintain 100 spry .

Regards

TSRK

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Ratheesh Ramachandran
Sent: 21 July 2013 19:53
To: materials-welding@googlegroups.com
Subject: [MW:18231] corrosion inside valve,NACE

 

Dear All,

 

            During our material receiving inspection here in  project site laydown yard,we noticed small quantity of water inside the newly arrived lot of  imported(Bonney Forge,Italy ) gate valves and piston check valves(1",3/4",A105N/F316 NACE) .These valves when tilted or put in inverted position, we could see drops of water coming out .We also saw some discoloration in the disc and in other internal parts of these valves  when checked from the outside ,which seems like rust.

 

         Some inspectors here are having the opinion that this water content inside the valves is due to the improper drying after the hydro tests at the vendors shop and these valves shall be rejected due to the rusting took place in the valve internals.But some are having the opinion that these discoloration of the internal of these valves are not serious and cannot result in any damage to the valves once put in the service lines.Kindly see the photograph attached.

 

        Dear Experts,kindly mail me your valuable opinion on this issue

 

thanks&regards

ratheesh nair

ksa

 

 

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