United States Nuclear Regulatory Commission - Protecting People and the Environment


ACCESSION #: 9806240191



Wyle

     Laboratories                       Wyle Reference No.: 45510B-050



June 22, 1998



Document Control Desk

U.S. Nuclear Regulatory Commission

Washington, DC 20855



Subject:  Siemens Circuit Breaker Potential Part 21



Reference:     1.   Entergy Operations, Inc. (EOI) PC No. 962027 --

                    Safety Related Siemens 4KV, 350 MVA, 1200 A Circuit

                    Breakers



               2.   Wyle Laboratories Potential Part 21 Notification

                    Letter 45510B-48 dated April 21, 1998



Dear Sirs:



Pursuant to the 10 CFR Part 21 requirements, this letter provides the

findings, resolutions, and conclusions pertaining to Potential Part 21

notification contained in Wyle's 4/21/98 letter along with Notice of

Anomaly (NOA) No. 8.



The equipment was supplied to Entergy Operations Inc.  (EOI),

Russellville, AR under EOI PO No. 982027.  NOA No. 8 included two

anomalies that are reprinted and resolved as follows:



Anomaly No. 1: The circuit breaker did not latch closed in the test

position with the GE test flag installed.  As a result, the MOC did not

maintain a change of state condition



Resolution No. 1: The Siemens vacuum circuit breakers should utilize a

Siemens test flag.  However, the Siemens flag had not been provided with

the breakers to EOI.  Subsequent testing at Siemens using the GE test

flag also resulted in failure of the breakers to latch closed.  In

addition, Siemens and Wyle had not supplied EOI with adequate

installation and test procedures that may have prevented this occurrence.

Now manuals are in preparation, which will provide satisfactory

installation and test procedures.



The Siemens test flag has been tested on EOI 5 KV and 7KV breakers at

Siemens and proven to operate adequately.  The conclusions are that: (1)

The utilities should not attempt to use the GE test flag with the Siemens

replacement vacuum breakers and (2) Siemens/Wyle will provide new

procedures for the installation and test of the breakers with the

Siemens' test flag.



Anomaly No. 2: The stored energy mechanism did not discharge when the

breaker was withdrawn from the cubical.



Resolution No 2: Provisions for adequate adjustments of the positive

interlock switch roller have been added to the design which resolves this

anomaly.



Wyle Laboratories, Inc.  7800 Highway 20 West P.O. Box 077777

Huntsville, AL 35807-7777 Tel: (256)837-4411



Wyle Letter No. 45510B-050              To: Nuclear Regulatory Commission

June 22, 1998                                                      Page 2



Neither of the two anomalies described above affect the circuit breakers

operability when the breaker is in its connected position, i.e., the

position required for the breaker to perform its safety-related function.

Therefore, a Part 21 condition does not exist.



If you have any questions, please feel free to contact me by phone

(256/837-4411, extension 271), FAX (256/830-21 09), or e-mail

(esmith@hnt.wylelabs.com).



Sincerely,



Wyle Laboratories, Inc.

Director, Contracts & Purchasing



[GENERAL INFORMATION or OTHER                EVENT NUMBER: 34113



LICENSEE: WYLE LABORATORIES, INC        NOTIFICATION DATE:  04/21/98

    CITY:                REGION: 0      NOTIFICATION TIME:  15:36 (ET]

  COUNTY:                 STATE:        EVENT DATE:         04/21/98

LICENSE#:             AGREEMENT:        EVENT TIME:         12:00[EDT]

  DOCKET:                               LAST UPDATE DATE:   06/22/98



                                             NOTIFICATIONS



                                        ELMO COLLINS             RDO



NRC NOTIFIED BY: EDWARD W. SMITH        VERN HODGE               NRR

HQ OPS OFFICER: DICK JOLLIFFE



EMERGENCY CLASS: NOT APPLICABLE

10 CFR SECTION:

CCCC 21.21          UNSPECIFIED PARAGRAPH



                               EVENT TEXT



- POTENTIAL 10CFR PART 21 REPORT



ON 04/07/98, WYLE LABORATORIES, INC AND SIEMENS CORPORATION

PERSONNEL

INSTALLED AN INTERLOCK KIT TO UPGRADE WYLE/SIEMENS SAFETY RELATED 4

KV,

350 MVA, 1200 AMP CIRCUIT BREAKERS AT ARKANSAS UNITS 1 AND 2.  THIS

UPGRADE WAS BEING INSTALLED DUE TO CONDITIONS OBSERVED ON SIMILAR

SIEMENS

CIRCUIT BREAKERS IN NON-SAFETY RELATED APPLICATIONS AT SALEM/HOPE

CREEK.



HOWEVER, THE SIEMENS TECHNICIAN DID NOT INSTALL THE KIT INTO THE

CIRCUIT

BREAKER PER THE APPROPRIATE SIEMENS DRAWING.  THE IDENTIFIED CIRCUIT

BREAKER, ALONG WITH NINE ADDITIONAL CIRCUIT BREAKERS WILL BE SHIPPED

FROM

ARKANSAS TO THE SIEMENS MANUFACTURING FACILITY AT WENDELL, NORTH

CAROLINA

WHERE THEY WILL UNDERGO AN APPROVED EVALUATION PROCEDURE.



THIS REPORT IS CLASSIFIED AS A POTENTIAL 10CFR PART 21 REPORT.



     ***UPDATE ON 06/22/98 @ 1800ET BY ED W. SMITH TAKEN BY MACKINNON ***



THE FOLLOWING INFORMATION COMES FROM A FACSIMILE SENT,BY WYLE

LABS:



"THE ABOVE EQUIPMENT WAS SUPPLIED TO ENTERGY OPERATIONS INC.  (EOI),

RUSSELLVILLE, AR UNDER EOI PO NO. 962027.  NOA NO. 8 INCLUDED TWO

ANOMALIES THAT ARE REPRINTED AND RESOLVED AS FOLLOWS:



"ANOMALY NO. 1: THE CIRCUIT BREAKER DID NOT LATCH CLOSED IN THE TEST

POSITION WITH THE GE TEST FLAG INSTALLED.  AS A RESULT , THE MOC DID NOT

MAINTAIN A CHANGE OF STATE CONDITION.



                        (Continued on next page)



LICENSEE: WYLE LABORATORIES, I          PAGE # 2 OF EVENT NUMBER: 34113



"RESOLUTION NO.  1: THE SIEMENS VACUUM CIRCUIT BREAKERS SHOULD

UTILIZE A

SIEMENS TEST FLAG.  HOWEVER, THE SIEMENS FLAG DID NOT PROVIDE WITH

THE

BREAKERS TO EOI.  SUBSEQUENT TESTING AT SIEMENS USING THE GE TEST

FLAG

ALSO RESULTED IN FAILURE OF THE BREAKERS TO LATCH CLOSED.  IN

ADDITION,

SIEMENS AND WYLE HAD NOT SUPPLIED EOI WITH ADEQUATE INSTALLATION

AND TEST

PROCEDURES THAT MAY HAVE PREVENTED THIS OCCURRENCE.  NEW MANUALS

ARE IN

PREPARATION, WHICH WILL PROVIDE SATISFACTORY INSTALLATION AND TEST

PROCEDURES.

"THE SIEMENS TEST FLAG HAS BEEN TESTED ON EOI 5 KV AND 7 KV BREAKERS

AT

SIEMENS AND PROVEN TO OPERATE ADEQUATELY.  THE CONCLUSIONS ARE

THAT: (1)

THE UTILITIES SHOULD NOT ATTEMPT TO USE THE GE TEST FLAG WITH THE

SIEMENS

REPLACEMENT VACUUM BREAKERS AND (2) SIEMENS/WYLE WILL PROVIDE NEW

PROCEDURES FOR THE INSTALLATION AND TEST OF THE BREAKERS WITH

SIEMENS'

TEST FLAG.



"ANOMALY NO.  2: THE STORED ENERGY MECHANISM DID NOT DISCHARGE

WHEN THE

BREAKER WAS WITHDRAWN FROM THE CUBICAL.



"RESOLUTION NO.  2: PROVISIONS FOR ADEQUATE ADJUSTMENTS OF THE

POSITIVE

INTERLOCK SWITCH ROLLER HAVE BEEN ADDED TO THE DESIGN WHICH

RESOLVES THIS

ANOMALY"



R4DO (BILL JONES) NOTIFIED AND A FAX SENT TO NRR VERN HODGE.



*** END OF DOCUMENT ***

Page Last Reviewed/Updated Thursday, March 29, 2012