ML20024G421
| ML20024G421 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 03/02/1978 |
| From: | Wachter L NORTHERN STATES POWER CO. |
| To: | Heishman R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML20024G414 | List: |
| References | |
| NUDOCS 9102120424 | |
| Download: ML20024G421 (3) | |
Text
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NORTHERN STATES POWER COMPANY Minneapolis, Minnesota 55401 March 2, 1978 Mr. R. F. Heishman, Chief Reactor Construction and Engineering Support Branch Region III United States Nuclear Regulatory Comission 799 Roosevelt Road Glen Ellyn, IL 60137
Dear Mr. Heishman:
FONTICELLO NUCLEAR GENERATING PLANT Docket No.60-263 License No. DPR-22 Your letter of February 9,1978, identified 4 items which appeared to be in noncompliance with NRC requirements and requested that we reply within 20 days of receipt of your letter.
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The first three items concern missing records and signoffs related to feed-water nozzle clad removal and feedwater sparger installation.
Our investiga-tion indicates that the associated work was performed properly and that all required quality control signoffs were completed.
Correction of documenta-tion will be completed by March 10, 1978.
The fourth item neerns missing documentation related to CRD Nozzle Capping.
The work associa ed with this item was also properly performed. The documenta-tion will be corrected by March 10, 1978.
Further explanation and additional corrective acticas for each item are as follows:
Item 1 General Electric Company (GE) did not maintain the Ultrasonic re-calibration and verification records while performing thickness measurement of the RPV feedwater nozzle safe-ends as required by GE procedure NSP-77-W-09E para-graph 7.2.
_ Response Calibration and/or verification was performed immediately prior to machining operation as evidenced by production and quality control signoffs in the machining procedure and travelers as follows:
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l 1.
Machining Procedure NSP-77-FW-09H steps 7.4.2 and 7.4.3 2.
Traveler CRM-45-D steps 2a and 2b 3.
Traveler RCRM-45E steps Sa and Sb 4.
Travelers CRM-135, CRM-225 and CRM-315 steps 14a and 14b The ultrasonic data was taken at the reactor vessel flange crea and was to be trar posed to the official procedures which were kept in a glove box on the refueling floor. However, this could not be done since the data sheets in the official procedure were page numbered and no sheets were provided for the recalibration or verification of the ultrasonic data. For future projects the data shcets will not be page numbered and sufficient
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sheets will be available i
Item 2 The following GE travelers were not signed-off by Quality Control and/or Production:
a.
Sequence 8 on traveler No. CRM-45-D.
b.
Sequence 21 on traveler No. CRM-315.
Response
2a.
The signof fs on Traveler CRM-45D were deliberately omitted to signify that the sequence was not completed in a satisfactory manner.
This sequence was to complete the safe end cut and clean the nozzle.
The safe end cut was completed. However, it appeared that the finish was not acceptable. A Non-Conformance Report was written and the response was to re-machine the nozzle. Sequence 8 was then incorporated into the repair traveler as Sequence 9 and properly signed off by both pro-duction and quality control personnel.
2b. This signoff is for blending of the face cut to the vessel wall and was signed off by the quality control inspector. The production sign-offs are a check point prior to subsequent operations. However, that sequence was the last operation on the traveler. The omission of the signoff was an oversight that will be corrected by the appropriate production personnel.
Item 3 The following GE weld joint process control sheets were not signed-off by Quality Control and/or Production:
Steps 5.d and 5.g on joint process control sheets for veld joint No.
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a.
FW-135-3.1, No. FW-135-3.2 and No. FW-J 35-4.1 through 4.4 b.
Step 3(b)1 on joint process control sheet for veld joint No. FW-135-5.
's Mr. R. Heishman March 2, 1978 s
Response
3a.
Step Sd is a verification of fillet size and was signed off by quality control. However, the production check point was not signed due to oversight. This will be corrected by the appropriate production personnel.
Step Sg is the signoff for postweld cleaning and was a checkpoint for production and was not signed off due to oversight. The post veld l
cleaning 10 verified as being performed by both production end quality control on traveler SP-135-3 and by production, on procedure NSP-77-W-15.
The joint process control sheets will be corrected by the appropriate l
production personnel.
3b.
The signoff for this step was indicated as a mandatory quality control signoff for the liquid penetrant inspection of the weld joint. A re-view of the joint process control sheet shows that the inspection was performed and the quality control signoff made in the space provided for the production signoff. This will be corrected by a notation on the joint process control sheet.
Item 4 Cherne Contracting Corporation (Cherne) liquid penetrant examination reports
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of weld joints No. B2104-001-0001 and No. B2104-002-0001 did not specify the caterial and technique used as required by Peabody procedure No. 3.23.A.1-4, paragraph No. 7.2.
Response
Notwithstanding the fact that the caterials and techniques used were not re-corded on the Liquid Penetrant Examination Report, certifications of the material used were included in the turnover documentation. The technique used was the visible dye - solvent removed technique. Materials used were:
Magnaflux Corp. SKL-HF Batch #7F012 Penetrant Magnaflux Corp. SKC-NF Batch #7F038 Remover Developer Magnaflux Corp. SKD-NF Batch #6F052 Cherne will amend the incon:plete reports. The Cherne Liquid Penetrant Examina-tion Report form has been revised to include designated spaces for recording the material used.
Should you have any questions concerning our response, please communicate directly with the plant management.
Yours very tr,uly, W hlfAn$
.J L. J. Wachter
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Vice President - Power Production and System Operation cc:
Mr. G. Charnoff
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