Removal of penetrant

[israr ahmed]

Dear all
During pt examination on weld we are using wire brush wrapped with cloth to remove penetrant from the grooves of weld passes.
Can anybody reply. Is it correct practice?
With ref to code and std.

[hardik desai]

No...its a wrong practice....you have to use lint free cotton...because it may possible in case of wire brush that it will remove the penetrant from flaws as well and in penetrant test, to have sufficient penetrant presnce in flaws during the is mandatory...

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[prem_nautiyal26]

No it's wrong practice.

Please follow your approved PT procedure for removal of excess penetrant.

Use lint free cloth and remove excess penetrant  with max 3 to 4 dry wiping.

Then use solvent moistened cloth for final wiping.

Only unidirectional wiping is allowed.

Regards

Prem Nautiyal 

ASNT LEVEL III( RT PT MT UT)

Sent from my Samsung Galaxy smartphone.

-------- Original message --------

From: israr ahmed <ahmedi...@gmail.com>

Date: 12/10/2016 09:24 (GMT+05:30)

To: material...@googlegroups.com

Subject: [MW:25522] Removal of penetrant

Dear all
During pt examination on weld we are using wire brush wrapped with cloth to remove penetrant from the grooves of weld passes.
Can anybody reply. Is it correct practice?
With ref to code and std.

--
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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[Israr Ahmed]

Dear Prem,

I am only ASNT Level II and during Level II Certification same thing is explained to me as you suggested,

But L&T Level III and AI given instruction that any way they can Clean since no where it is specified to clean in Uni Direction as well as Time to Clean.

They Have Instructed clean the Penetrant until the any penetrant races visible.

Cleaning time They are taking 10 to Minutes.

Since I don't have any ref in Code and Specification or Any Std. ASTM E 165 so I can't argument.

If you have any ref. Pls tell me.

[prem_nautiyal26]

Then follow whatever method is mentioned in your approved written PT  procedure for excess penetrant removal.

Regards 

Prem  Nautiyal 

Sent from my Samsung Galaxy smartphone.

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