IR 05000263/1974009
| ML20024G126 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 12/03/1974 |
| From: | Choules N, Jordan E, Vandel T NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML20024G121 | List: |
| References | |
| 50-263-74-09, 50-263-74-9, NUDOCS 9102070557 | |
| Download: ML20024G126 (6) | |
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U. S. ATOMIC ENERGY COMMISSION DIRECTORATE OF REGUd. TORY OPERATIONS
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REGION III
Report of Operations Inspection RO Inspection Report No. 050-263/74-09 Licensee-Northern States Power Company 414 Nicollet Mall Minneapolis, Minnesota 55401 Monticello Nuclear Generating Plant License No. DPR-22 Monticello, Minnesota Category:
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Type of Licensee:
BWR (GE), 545 Mwe Type of Inspection:
Special, Announced Date of Inspection: November 10,^1974 w,ctob..er 23-25, 1974 (Region IV, Joiner)
O v4m Dates of Previou #s luspection:
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Principal Inspector:
N. C. Choules
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Accompanying Inspector:
T. Vandel
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Other Accompanying Personnel; None
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M Reviewed By:
E. L. Jordan, Senior Reactor Inspector Reactor Operations Branch (Date)
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S_UMMARY OF r.lNDINGS
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Enforcement Action None Licensee Action o.1 Previously Identified Enf orcement Matters Not Applicable.
Unusual occurrences None Other Significant Findings A.
Current Findings 1.
The licensee performed ultrasonic testing of the 4-inch piping bypass recirculation line welds and found no cracks.
2.
The licensee performed liquid dye penetrant testing of the welds on the 2-inch equalizing lines around the loop cross connect valves and found no cracks.
B.
Unresolved Matters-mwo sn
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None C.
Status of Previousiv Reported Unresolved Itemn None Management Interview at the The following Northern States Power personnel were present management interview conducted at the conclusion of the inspection on November 10, 1974.
G.11. Neils, General Superintendent of Nuclear Power Plant Production C. E. Larsen, Plant Manager M.11. Clarity, Superintendent Plant Engineering and Radiation Protection P. J. Krumpos, Quality Assurance Engineer The inspectors stated that the purpose of the inspection was to reeicw the licensee program and actions related to the inupection of the welds on the recirculation bypass lines and on the equalizing lines for the loor cross connect valves for cracks.
The inspectors stated the following items were inspected and there were no apparent deficiencies.
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A.
The drywell was entered with the licennee's representative and the piping welda which were inspected for cracks were identified.
I B.
Records for the testing equipment calibrations and qualifications and for the testing personnci qualifications were reviewed.
C.
Testing proceduren utilized were reviewed.
D.
Test data obtained was reviewed.
The inspectors stated it was their understanding from discussions with the licensce's representatives and from review of test data that no cracks were found in the welds. The licensee confirmed this statement.
(Report Details)
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REPORT DETAll.S Personn Contacted The following individuals, in addition to the individuals listed in the Management Interview section of this report, were contacted during the inspection:
N" clear Services Corpg ation (NSC)
T. G. Lambert, Manager of Plant Testing V. J. Lovelace, Level 11 Inspector L. Thomas, Level 11 Inspector Hartford Steam Boller Insurance Company T. F. Wotier, Authorized Inspector Results of Inspection The nondest.uctive examination of the recirculation system bypass piping
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welds performed by NSC under contract to Northern States Power Company was reviewed by the inspectors.
The areas of review included:
1.
Visual identification of we.1ds v-n.
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The inspectors entered the drywell containment vessei a.ccompanied by the Northern States Power Company's Power Production Department Quality Assurance Engineer. The welds that were nondestructively inspected were visually examined by the R0 Inspector and were noted to be suf ficiently accessabic for the inspection, were reasonably smooth and evenly contoured, and no deterrent to t.he inspection was identified.
2.
Equipment ut]]ized The equipment utilized for the inspection was available for review and was reviewed by the RO Inspectors.
Equipment identification tags and calibration tags (showing valid calibrations) were in evidence and were determined to be tracenble to documentation et equipment accaptability availabic at the site office.
A calitration standard was examined that was utilized for the ultrasonic testing (UT) equipment calibration as prescribed by the procedures.
The s
equipment used appeared to be acceptable.
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3.
Records of Qon11fication Records were reviewed by the R0 inspector relative to the qualifications of the UT equipment used and the inspection personnel. The qualification records appeared to be adequate and included the following:
a.
Inspection personnel NSC provided certifications, results of testing, and eye examinations for 6 level 11 and level III UT inspectors, of which five were utilized in the performance of the UT inspect 1on.
b.
Equipment _ qualifications Certifications and calibration information were available for the transducers, the wedge blocks (45' wedge), the scopes and recorders, and for the couplant fluid utilized for the longitudival wave form inspection.
c.
Licennee Review The licensee representative stated, in responne to questioning.
that he had examined all of the certifications and qualifications information and had found everything in order.
4.
Procedures The licensee representative stated that the six NSC proceduresmutilized
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in the inspection had been reviewed and approved by NSP Co., that these procedures were the same procedures that were used for the llonticello f acility inservice inspections, and that these procedures are responsive to the requirements of the ASliE Section Ill and Section XI codes both through the summer 1973 addenda.
5.
Inspection Results The RO inspectors reviewed selected UT inspection chart records with the NSC Level III inspector. The charts selected included the wolds adjacent to the weldoletr of the 4-inch piping bypass tap from the recirculation piping.
The results appeared to be satisfactory.
6.
Liquid Penetrant (LP) Insp_ection The qualifications were examined for the LP inspection personnel and
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it was found that the name personnel utilized for the UT examination were also qualified for the LP testing.
In addition certifications were available that establiched that the penetrant materials met the applicable ASME requirements.
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RO Inspection Report No.
050-263/74-09 Transmittal Date
December 4. 1974 Distribution:
Distribution:
R0 Chief FS&EB RO Chief, FS&EB RO HQ (5)
RO:HQ (4)
DR Central Files L:D/D for Fuels & Materials Regulatory Standards (3)
DR Central Files
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Licensing (13)
RO Files R0 Files B.
RO Inquiry Report No.
Transmittal Date
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Dietreugegapso e
, pe*mJnistributions.
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R0 Chief, FS&EB RO Chief, FS&EB RO:HQ (5)
RO:HQ
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DR Central Files
'DR Central Files sa Ragulatory Standards (3),.,
.,RO. Files
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m Licensing (13)
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RO Files C.
Incident Notification From:
(Licensee & Docket No. (or License No.)
Transmittal Date
Distribution:
Distribution:
RO Chief, FS&EB RO Chief, FS&EB RO:HQ (4)
RO:HQ (4)
Licensing (4)
L:D/D for Fuels & Materials DR Central Files DR Central Files R0' Files R0 Files
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