United States Nuclear Regulatory Commission - Protecting People and the Environment

95114
ACCESSION #: 9504110327

Industrial Valves DRESSER               DRESSER VALVE & CONTROLS DIVISION
                                        Post Office BOX 1430
Industrial Valve Operation              Alexandria, Louisiana 71309-1430
                                        TEL:318/640-2250
                                        TELEX:58-6423
                                        CABLE. DIVID
                                        RAPIFAX: 318/640-6222

                                                            Page 1 Of 2

April 4, 1995

Document Control Desk
U. S. Nuclear Regulatory Commission
Washington, DC 20555

Subject:  Industrial Valve Operation, Dresser Valve And Controls
          Division, Dresser Industries, Inc.
          10 CFR Part 21 Notification, Dresser Investigation File No.
          95-01 Reporting of a noncompliance to a Main Steam Safety Valve
          that could cause the valve not to perform its safety function.

Gentlemen:

The following noncompliance has been determined to be reportable within
the requirements of 10 CFR Part 21.  The noncompliance occurred in a Main
Steam Safety Valve owned by Entergy Operations, Inc., Arkansas Nuclear
One (ANO), Unit 1.  The noncompliance Is the use of a part In a safety
valve that was not manufactured to specification requirements.  The part
was not manufactured nor provided by Dresser Industrial Valve Operation.

Noncompliance and Brief History
A Dresser main steam safety valve from Entergy Operations,  Inc, Arkansas
Nuclear One (ANO), Unit 1, was refurbished at Wyle Laboratories,
Huntsville, Alabama, In February 1995.  This was a Type 3707R safety
valve with serial number BM-02978.  During the refurbishment, Dresser's
service engineer found the following nonconformances:

     (1)  A foreign lower adjusting ring pin was found In the safety
          valve.  The ring pin was not of Dresser manufacture.  And was
          not In conformance with design criteria.  The tip of the pin
          was worn to the point of failure.

     (2)  The seal wire had been cut and stuck back into the seal.  And
          had been re-crimped with regular pliers.  Adjusting ring pins
          are required to be sealed using special pliers that impresses a
          Dresser Identification Into the seal.

     (3)  The upper adjusting ring was found in a position other than the
          position previously set by Dresser.

                 CONSOLIDATED o DEWRANCE o HANCOCK o MASONEILAN o NIL-COR

Document Control Desk                                       Page 2 of 2
U. S. Nuclear Regulatory Commission
Washington, DC 20555                         April 4, 1995

Subject:  Industrial Valve operation, Dresser valve And Controls
          Division, Dresser industries, inc. 10 CFR Part 21 Notification,
          Dresser investigation File No. 95-01
          Reporting of a noncompliance to a Main Steam Safety Valve that
          could cause the valve not to perform Its safety function.

Adjusting ring pins are essential to the safety function.  if the
adjusting ring pin had failed In service, the lower adjusting ring will
most likely rotate downward until It stopped on the nozzle threads.  At
this low position, the safety valve will not attain rated lift and
capacity.  And the safety valve will not execute Its safety function.
Dresser is concerned about other safety valves at Arkansas Nuclear One
(ANO).  If safety related parts are used that do not meet design
criteria, then we question the ability of the valves to execute their
safety f unction.  Also, the as found position of the upper adjusting
ring may have caused the blowdown of the valve be as high as 15%.

Report SV-404, Failure Analysis Report 3707R Main Steam Safety Valve,
Revision 0, Dated 3/24/95, for valve serial number BM-02978 is included
for NRC review and records.

Sincerely,

J.M. Cooper
Executive Vice President & General Manager

acting in the behalf of the above

R. D. Danzy
Vice President, Engineering

cc: A. R. Casler
    R. D. Danzy
    R. S. Huffman
    C. E. McDavid
    J. W. Richardson
    D. K. Sharma
    J. P. Watz

Attachments

                                                            Page 1

                       Industrial Valves  DRESSER

INDUSTRIAL VALVE OPERATIONS             Phone 318-640-2250
Dresser Industries, Inc.                 Fax: 318-640-6222
P.O. Box 1430
Alexandria, Louisiana 71309-1430

                             RAPIFAX MESSAGE
                                                  wpwln\nrcrpt.fax

To:       Nuclear Regulatory Commission Operations Center
          Document Control Desk
          Phone: 301-816-5100       Fax No.:301-816-5151

From:     R. D. Danzy
          Vice President Engineering
          Phone: 318-640-9001                Fax: 318-640-6175

Attached is a reportable noncompliance. Dresser Report SV-404, Failure
Analysis Report 3707R Main Steam Safety Valve, Revision 0, Dated 3/24/95,
for valve serial number BM-02978 is being sent separately by mail.

*** END OF DOCUMENT ***
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