ML20010J095

Responds to NRC 810821 Ltr Re Violations Noted in IE Insp Rept 50-389/81-05.Corrective Actions:Welding Supervision Added for Weldments Requiring Gas Shielding & Purging & Weld Procedure Placed Into Work Package.Affidavit Encl

ML20010J095
Person / Time
Site:	Saint Lucie
Issue date:	08/31/1981
From:	Robert E. Uhrig FLORIDA POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20010J076	List: ML20010J095 ML20010J115 ML20010J122
References
L-81-378, NUDOCS 8109290586
Download: ML20010J095 (3)

Text

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P.O. BOX 529100 lC11,AMI, Fi 33152 f!4,g

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August 31, 1981

'L-81-378 Mr. James P. O'Reilly, Director, Region II Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303

Dear Mr. O'Reilly:

Re: RII:WPX:BRC St. Luc.ie Unit 2 Docket No. 50-389/81-05 In accordan:e with the August 21, 1981 request from Mr. Bill Kleinsorge, this supplementary response provides additional clarification of corrective actions taken with respect to open violations 81-05-01 concerning preservation of safety-related equipment and 81-05-02, control of welding and welder qualification.

Florida Power & Light was asked to address under example A.2 of violation 81-05-01 the effect of failure to apply heat to the motor on Waste Gas Compressor 2A. No heaters are permanently installed in this motor. The design of the motor does not require heat once installed and turned over.

Turnover for the waste gas compressor occurred on April 9, 1981. Since failure to apply heat to the motor was considered a violation by the NRC, temporary heat was applied to the motor. A check on August 14, 1981, verified that heat is still being applied to the motor. There was no effect on the motor from not applying heat at the time of the subject NRC inspection as it is not required.

Also asked was a question under example A.3 of violation 81-05-01 concern-ing the method used to advise supervision not to permit scaffolding / rigging from pipe smaller than four inches in diameter. On August 24, 1981, a memo was prepared by Constructi n to reinforce previous verbal instructions to the field. This memo advi. :d that all scaffolding used in St. Lucie 2 is under the jurisdiction of two (2) civil suncrvisors. These supervisors are aware that no scaffolding is to be erected from pipe smaller than four inches in diameter. They have instructed all of their people to this effect and in addition, as an added reminder, a copy of the memorandum stating this requirement is posted on the supervisors' building bulletin board.

In addition, in any case where the above-noted responsible supervisors have a question as to the structural integrity of the supporting pipe structures, the responsible area engineer will be consulted to assure proper evaluation of the given configuration.

Additional information was requested concerning excessive purge cas flow on 8109290586 810918 PDR ADOCK 05000389 G PDR PEOPLE. . SERVING PEOPLE

Office of Inspection and Enforcement Page Two welding of containment spray piping under example B.3 of violation 81-05-02:

1) FPL concurs with the finding.

2) The welders increased the argon flow to purge the line free of oxygen and after checking the zcne to be welded, the condition was found to be acceptable for welding. The welder failed to reduce the argon flow per welding procedure requirements.

3; Corrective action included placing the weld procedure into ,

the work package for the welder to review prior to making the weld, also additional welding supervision has been added to surveil weldments requiring gas shielding and purging.

4) Excess gas purging generates a concave weld when restricted or pressure builds up at the molten metal zone within the weld nugget. Radiography reveals the cavity if such exists and Weld Repair Reports are generated to correct these rejected welds.

Seam #CS 0032 002 - Rejected Concave Weld, repaired WRR 3999 AAJ Seam #CS 0024 902 - Rejected Concave Weld, repair in process WRR 4934 Seam #CS 0024 903 - RT Acceptable.

5) The practice of placing the weld procedure into the work package for the welder was implemented on August 3, 1981.

However, no attempt was made to backfit work in progress.

Metallurgical effects are negligible when molten metal is purged with argon; therefore, concave welds will be detected by RT and repaired.

Ver yours,

$ }

Robert E. Uhrig Vice President Advanced Systems & Technology i

RAJ/TCG/ah cc: Harold F. Rais, Esquire

STATE OF FLORIDA )

) ss.

COUNTY OF DITE ')

Robert E.

Uhrig, being first duly sworn, deposes and says:

That he is a Vice President of Florida Power & Light Company, the Licensee herein; That he has executed the foregoing document; that the state-ments made in this said document are true and correct to the best of his knowledge, infermation, and belief, and that he is authorized to execute the document on behalf of said Licensee.

/

Robert E. Uhrig Subscribed and sworn to before me this 3/ day of h.44t d ,

19h a

b- AJ-4 AY NOTARY PUBLIC, in and for the county of Dade, State of Florida Netsey pun;c. ? tree ei Florida at Larga

.My commission expires: 74 cer w h oo - onow 30. 283 uonc.N mtu a m . .#c a Cauc4ny Agcacy

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