Re: [MW:17814] Radiographic Film Interpretation Excess Penetration..

Dear

I find your main concerns as if the inspector does not know his job.You also says that your management has taken this issue very seriously.I believe they should taken it during welder qualification.

I believe your client inspector may be having enough experience where he clearly states the repair.

Please note that where limited information available for the imperfection by any method you as a constructor demonstrate any other method to prove that internal protrusion/penetration is with in the code limit. Destructive or NDT for one or two dispute cases.

The case of intelligent pigging will come later if it required as per specification. Excess penetration will stuck the pig in the line.

Please read below clauses of API-1104. specially rights of rejection.

13.8.4 Rejection Based On Reinforcement
The inside-diameter weld reinforcement shall not be raised
above the parent material by more than 1/16 in. (2 mm). The
outside-diameter weld reinforcement shall not be raised
above the parent material by more than 1/8 in. (3 mm).
13.

9.2 RIGHTS OF REJECTION
All nondestructive test methods are limited in the information
that can be derived from the indications they produce.
The company may therefore reject any weld that appears to
meet these acceptance standards if, in its opinion, the depth of
an imperfection may be detrimental to the weld.

Regards

On 27 May 2013 12:24, Dominic v.k.dominic <v.k.dominic@gmail.com> wrote:

Dear friend ,

that code is API 1104..

my question is excess penetration how is measuring the rt film like ruler scale..your knowledge it is possible

Thanks

Dominic V.K.  

On Mon, May 27, 2013 at 10:28 AM, Babur Khan <mbabur.bwp@gmail.com> wrote:

Dear friend,

1st you mention construction code which applicable if ASME B31.3-2008 then see Table 341.3.2 Acceptance Criteria for Welds and Examination Methods for Evaluating Weld Imperfections

as per this
L Height of reinforcement or internal protrusion [Note (8)] in For T w, mm (in.) Height, mm (in.)
any plane through the weld shall be within limits of
the applicable height value in the tabulation at right, ≤ 6 (1⁄4) ≤ 1.5 (1⁄16)
except as provided in Note (9). Weld metal shall merge > 6 (1⁄4), ≤ 13 (1⁄2) ≤ 3 (1⁄8)
smoothly into the component surfaces. > 13 (1⁄2), ≤ 25 (1) ≤ 4 (5⁄32)
> 25 (1) ≤ 5 (3⁄16)
M Height of reinforcement or internal protrusion [Note (8)] Limit is twice the value applicable for L above
as described in L. Note (9) does not apply.

so and same like API 1104 have criteria
 

On Mon, May 27, 2013 at 9:28 AM, Dominic v.k.dominic <v.k.dominic@gmail.com> wrote:

Dear Expertise,

I have this issue please anyone clarify me,

One QA/QC- Inspector 20 years Experience person  he rejected one 24" pipe line  RT film   because of excessive penetration by measuring the dimension with a ruler and required the joint to be repaired..

This is Acceptable or Not Acceptable.

if Acceptable where is mentioned the code?

Please clarify me, Because my management take this issue very serious  

Best Regards 

Dominic V.K.

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Regards

BABUR KHAN LASHARI

Welding Inspector

(QA/QC)

SATORP (JERP)

Mob: +966 (0) 56 2179280

         +92334 6186285  

Skype Id : babur.lashari

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