Re: [MW:5843] PMI using Spectroscopr JR on SDSS(F53) flanges

Sathyaprakash,

there should be no metallurgical problems with this as the depth of penetration of the spark is very small. It would never have been any use as a met tool if the testing caused metallurgical damage.......I had one of these some years ago and just used a file or some emery paper to remove most of the marks. XRF is definitely a better tool to use as you probably know it leaves no marks. Removing the sparks should not cause you any problems as they are just cosmetic in this instance.

regards

Declan

On 03/07/2010 08:29, TK, Sathyaprakash wrote:

One of our flange vendors have used Sptroscope JR  for performing PMI on SDSS (ASTM A182 F53) flanges.

It is violating two of our requirements

1.       Our purchase requisitions wants vendor to remove any PMI marks before supplying the items to us, vendor did not comply

2.       Our construction specification  allows us only XRF machines for PMI, we did not take this into consideration while approving vendor’s  PMI procedure.

 

Vendor has advised the marks shall only be removed by grinding and their pickling and passivation which was shown as the last stage in the manufacturing ITP was not able to remove the marks.

 

Now that the items are at our site Please advise

1.       If there is any adverse metallurgical effect on the SDSS material because of the sparking on the surface?

2.       We have tried removing the spark marks by touching it by pencil grinder and is getting removed is that advisable?

 

 

Regards,

Sathyaprakash

 

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