ML11140A087

Sor Event 46821 Evaluation of Deviation for Defect

ML11140A087
Person / Time
Site:	Braidwood, Duane Arnold
Issue date:	05/13/2011
From:	Turney C SOR
To:	Office of Nuclear Reactor Regulation
References
43821
Download: ML11140A087 (4)

Text

Roberta Chandler From:

Roberta Chan-dler on behalf of Colbert Turney Sent:

Friday, May 13, 2011 3:27 PM To:

'mshd.resource@nrc.gov' Cc:

Joel Bradley; Joe Modig; Bert Benton; Ben Harper

Subject:

SOR Event 46821 Evaluation of Deviation for Defect Attachments: SOR Part 21 Eval of Dev.pdf This Evaluation of Deviation for Defect is being sent as a follow up to a call made to Steve Pannier, Eric Thomas and Jessie Robles of the NRC on May 12, 2011.

We look forward to the NRC's closure of this Part 21 Non-Emergency Event. Please email or call me if you need additional information or if there are any questions.

SOR Part 21 Eval of Dev.pdf (2...

Colbert Turney Vice President of Quality 1-800-676-6794, 913-956-3160 or cell 816-419-6666 cturneycDsorinc.com

14685 West 105t" Street Lenexa KS 66215 USA 913-888-2630 Evaluation of Deviation for Defect Report See SOR Procedure 8303-110 Reporting of Deviations for Defects per NRC 10CFR Part 21 Documented on:

RMA 30503 NCR CSS Event DESCRIPTION:

THIS PRODUCT RETURN OR COMPLAINT IS NUCLEAR FACILITY"RELATED***

IF COMMERCIAL GRADE PRODUCT, DOES THE CONTRACT INVOKE 10CFR50 APP.

B OR 10CFR PART 21? YES Q.A.

TO REVIEW PER NUCLEAR PROCEDURE 8303-110 EVALUATION OF DEVIATION FOR DEFECT.

YES MODEL NUMBER:

9013737 (201RT-B125-U9-C7A-TTNQ)

SERIAL NUMBER OR SALES ORDER NUMBER: 100901789 DESCRIPTION OF PROBLEM: CONDUCTOR IS NOT VISIBLE IN END OF TERMINAL NO.1 LUG.

INITIALS & DATE: JJ 2/9/11 PROCESS MEDIA (OPT.): N/A CONTACTS EMAIL ADDRESS (OPT.):

CHARGES QUOTED (OPT.): N/A ADVANCE REPLACEMENT SENT (YES or NO): NO CREDIT FREIGHT?

(NO or YES & $): NO WILL RETURN ON SOR UPS ACCOUNT RESOLUTION:

UNIT GAVE TO JOE MODIG FOR EVALUATION.

CP 02-17-11 lea #9013737

/ S/N#100901789 ON THE "NO" WIRE THE CONDUCTOR IS NOT VISIBLE ON THE LUG.

WARRANTY REPAIR.

PER JOE WE WILL NEED TO This is the RMA with the improper wire crimp.

It also appears there is a chip on the corner of the terminal block where it is fastened to the bracket.

I propose we do the following.

1. Disconnect all three wires from the terminal block.

2.

Remove the terminal block.

3.

Remove the terminal block bracket.

4. Cut off the bad lug and install new lug. Record traceability.

5. Clean all internal and external threads from of any Loctite residue.

6.

Scrap the old terminal block and replace it with a new one. Record traceability.

7.

Re-install all parts per standard nuclear procedures, recording traceability on Loctites used.

8.

Document all assembly steps on the appropriate nuclear assembly procedures.

9.

Make sure to verify that the wires are connected to the appropriate terminals.

10.

Re-do final cal and document on test data sheet.

CP 02-18-11 Evaluation:

'/ Deviation only 0

Defect Evaluation of Deviation The returned unit, serial number 100901789, from Duane Arnold Nuclear Power Plant passed all internal testing prior to leaving SOR. This verified that there was conductivity between the wire and the terminal lug.

After the unit was returned to SOR, evaluation of the terminal lug in question by the customer showed that while the stripped wire was not easily visible at the ring side of the lug, the wire was secure in the crimp. The unit was re-tested, once again verifying the conductivity of the wire to the terminal lug.

Follow up evaluation of our internal production process verified that the correct hand crimper as specified by the terminal lug manufacturer was used. It was found that the terminal lug manufacturer recommends a.219

+/-.016 in. wire strip length and our internal process instructions call for a slightly shorter strip dimension of 3/16 in. (.1875). Regardless, the conductivity of the wire to the terminal lug is still established using the shorter strip dimension. To verify that the current strip length would be visible when inserted properly, a new sample wire was prepared with the 3/16 in. strip length. When this sample wire was fully inserted into the terminal lug, conductor strands were visible on the lug side of the terminal crimp barrel. This meets the generally accepted Form 760 (10.10)02010 SOR Inc.

Ref-8303-110 Page 1 of 2

SUR 14685 West 1 051 Street Lenexa KS 66215 USA 913-888-2630 workmanship standards for this type of wire termination. However, as a continuous improvement, the internal process instructions have since been changed to agree with the manufacturer's recommended length.

The evaluation conclusion is that a random operator error resulted in the wire not being fully inserted into the terminal lug prior to crimp termination thus resulting in the wire conductors not being visible. Because it was a random error and because conductivity was still present even under this condition, a Part 21 is not required.

Name, Title Signature Date Bert Benton inue Vice President, Manufacturing John Fortino

_-2S-I Vice President, Engineering Colbert Turney Vice President, Quality 2 1 2o/

See 8303-117 Approved Personnel List If Evaluated as Defect per NRC 10CFR Part 21:

Preliminary notification issued on (date)

Notification of Defect per 1 OCFR21 Requirements issued on (date)

Notification rescinded on (date)

If Defect, see CAR Retain per 094-129 Procedure for Controlling Quality Records:

L:\\$Quality\\Nuclear\\10CFR Pt 21 - Evaluation of Deviations & Defects Form 760 (10.10) ©2010 SOR Inc.

Ref: 8303-110 Page 2 of 2

.joP Part 21 Event Number: 46821 Rep Org: SOR INC PROCESS INSTRUMENTATION Licensee: SOR INC PROCESS INSTRUMENTATION Region: 4 City: LENEXA State: KS County:

License #:

Agreement: Y Docket:

NRC Notified By: COLBERT TURNEY HQ OPS Officer: BILL HUFFMAN Notification Date: 05/04/2011 Notification lime: 12:14 [ETI Event Date: 05/04/2011 Event Time: [CDT]

Last Update Date: 05/04/2011 I

Emergency Class: NON EMERGENCY 10 CFR Section:

21.21 - UNSPECIFIED PARAGRAPH Person (Organization):

DAVID PROULX (R4DO)

PART 21 GROUP 0 MARK RING (R3DO)

Event Text PRESSURE SWITCH WITH POSSIBLE SUB-STANDARD ELECTRICAL LEAD TERMINATIONS SOR Process Instruments has determined that certain model pressure switches it has manufactured may have leads attached to the terminal blocks that are not in conformance with good manufacturing practice. The pressure switches in question may have lead wire attached to the terminal block in which the connection between the stripped, stranded wire and a crimped terminal may not be flush with the terminal end. SOR states that there have been no known field problems associated with this issue.

This condition applies to SOR model switches with terminal block "X" options 9013-737, 9013-747, 9013-7674. SOR has provided this information to those customers that purchased these switches. The U.S. plants that received these switches are Braidwood and Duane Arnold.