IR 05000010/1974011
| ML19340A691 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 10/29/1974 |
| From: | Hunnicutt D, Williams C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| Shared Package | |
| ML19340A690 | List: |
| References | |
| 50-010-74-11, 50-10-74-11, NUDOCS 8009020619 | |
| Download: ML19340A691 (9) | |
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U. S.-ATOMIC ENERGY COMMISSION DIRECTORATE OF REGULATORY OPERATIONS
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REGION III
Report of Construction Inspection RO Inspection Report No. 050-010/74-11 J
Licensee:
Commonwealth Edison Company P.O. Box 767 Chicago, Illinois 60690 Dresden Unit 1 License No. DPR-2 Morris, Illinois Category:
C Type of Licensee:
BWR (GE) - 200 Mwe Type of Inspection: Announced, Special Date of Inspection:
October 3, 1974
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Dates of Previous Inspection: August 25 and 26, 1974 (Operations)
k PrincipalInspectorhC.C. Williams
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f Accompanying Inspectors: None Other Accompanying Personnel:
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Reviewed By:
D. M. Hunnicutt,
/ Af/77
, Senior Reactor Inspector (Acting)
(Date)
Engineering Support
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' SUMMARY OF FINDINGS
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Enforcement Action
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A.
Violations No violations of AEC requirements were identified.
B.
Safety Matters
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No safety matters were identified.
Licensee Action on Previously Identified Enforcement Matters
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No previously identified enforcement matters were inspected.
Design Changes None identified.
Other Significant Findings A.
Current Findings
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1.
The RO:III inspection of the in-service inspection activity, conducted by the licensee during the period of time from October 9, 1973, to July 3, 1974, resulted in a finding of conformance to the requirements in all areas. The AEC Division of Reactor Licensing letter (Skovholt) dated February 2, 1972, the Dresden Unit 1 technical specifications did not contain requirements for in-service inspection. However, such sur-veillance was conducted under an inspection program which was found by Licensing to conform to AEC recommendations.
(AEC document, "In-service Inspection Requirements for Nuclear Power Plants Constructed with Limited Accessibility For In-service Inspection", dated January 31, 1969, including tables in the form of Tables IS-251 and IS-261 of Section XI of the ASME Code).
Further, Commonwealth Edison Company (CE) committed to, and implemented the requirement stipulated in the CE letter to Licensing dated November 8, 1971, that "The inspection of certain piping, pumps, and valves will be conducted at three times the frequency given in Section XI of the code, i.e., a complete inspection of these components would be done three times in ten years". This commitment will prevail until certain engineered safeguard systems are in place and approved by Licensing.
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2.
Review of the current revision of the technical specifications
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showed that requirements for in-service inspection surveillance are now included as Table 4.6.1, and the effective date is
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July 27, 1974.
The surveillance activity, under RO:III review at this time, was not done to the revised technical specifications.
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3.
The NDT procedures for ultrasonic testing and the ultrasonic test blocks used for the current Dresden Unit 1 in-service inspection activity are the same as those used for Dresden Unit 3 and Quad-Cities Unit 1.
RO:III identified violatipns to the technier.1 requirements of ASME Section III during the
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RO:III review of Dresden Unit 3 and Quad-cities Unit 1 in-service inspection activity.
Subsequently, CE revised the NDT procedures (UT) and refabricated various UT test blocks.
The revised ultrasonic test procedures and refabricated test blocks were used for this Dresden Unit 1 in-service inspection.
The justification for these revisions and other changes made are documented on the CE report prepared by E. Potter, titled
" Operational Analysis Department Report on Evaluation of Ultrasonic Calibration Standards for Dresden Station - Document No. M-1426-74" dated June 28, 1974.
This report was transmitted to RO:III on July 28, 1974.
The significant impact of these changes on the Dresden Unit 1 in-service surveillance is that, in addition to the required
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coverage, certain of the welds on the 22" piping in the recirculation loop which were inspected during the Fall 1973 in-service test, will have to be re-inspected during the next in-service inspection.
4.
The scope of the current in-service inspection activity appeared to conform to the approved interim criteria (Table 1, CE records). The X-Ray Engineering Company provided the NDT personnel and instrumentation. CE provided the ultrasonic test standards, and the Hartford Steam and Boiler Company provided the third party surveillance (code inspector). This surveillance activity also included a full and complete response to Regulatory Operations Bulletin No. 74-3 and its Supplement A.
B.
Unresolved Matters No unresolved matters were identified.
C.
Status of Previously Reported Unresolved Matters No previously reported matters were reviewed.
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Management Interview A.
The 'following persons attended the management interview at the close of the inspection.
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Commonwealth Edison Company (CE)
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B. Stephenson, Station Superintendent J. W. Wujciga, Unit No.1 Lead Engineer
R. L. Williams, Technical Staff Engineer J
B.
Matters discussed and comments, on the part of management personnel were as follows:
The inspector stated that his review of the in-service inspection records and commitments documents showed that all areas conformed to the requirements. Review of the licensee's response to RO Bulletin No. 74-3, and its supplement, showed that the requirements had been met.
The inspector observed that records, to demonstrate the conformance of the ultrasonic test standards transducers and UT couplant materials to requirements, had been acquired after the fact. Further, certain areas of the current in-service inspection activity will be re-inspected as a result of necessary changes to procedures and test standards.
However, each of those deficiencies had been adequately identified and corrected by the licensee.
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The licensee acknowledged these remarks.
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REPORT DETAILS
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Persons Contacted
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No one, other than those listed under the Management Interview Section of this report, was contacted.
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Results of Inspection
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1.
In-service Inspection - Reactor Coolant System J
The RO:III inspection of the in-service inspection program included a review and examination of the applicable QA/QC provisions, non-destructive test procedures and the CE Table 1 which outlines the I
scope of the inspection activities in accordance with ASME Section
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XI, Table IS-251 and IS-261.
This inspection activity conformed to ASME Section XI-1971 and Summer iddenda, except that certain areas of the system will be inspected at three times the frequency specified by Section XI in accordance with a commitment (Steide'to Dr. Morris dated November 11, 1971) to AEC Licensing.
The licensee's implementation of RO Bulletin 74-3 was found to completely cover 100% of the specified areas of interest during this outage.
The licensee reported that the final report (data package) will be available in about six weeks. The current records were found to be
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satisfactory.
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The examinations were conducted under the direction of the Unit 1 lead engineer (Maintenance).
Test and examinations were performed (
by X-Ray Engineering personnel. The assigned code inspectors
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(Hartford Insurance) participated in the review of the examination.
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2.
Examination Techniques and Procedures
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All nondestructive test procedu_as were provided by CE.
The ultrasonic procedures, used during this in-service inspection, were a revision-i of those procedures used during the previous preservice inspection.
The revised procedures were issued by CE to reflect.the results of
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l a study of the calibration standards made by CE, titled "Dresden
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Nuclear Power Station, Units 1 and 3, Report on Evaluation of Ultrasonic Calibration Standards", dated June 28, 1974. As a
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result of this study and the subsequent revision of various UT test procedures, CE has determined that re-inspection of certain
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welds in the recirculation loop piping will be necessary.
This work will be done during the next ASME Section XI surveillance.
This re-inspection will be done in addition to the normal coverage at that time. The necessity for this re-inspection is due to the change made in the previous ultrasonic test procedure, No. NDT-C-2,
Revision 2, and calibration test standard No. 9996'
All other
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procedures reviewed appeared to conform to the requirements.
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a.
Visual Examination
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Visual test procedure No. NDT-V-1 was reviewed, and it appeared
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to conform to the requirements.
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Surface Examination
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i Procedure No. NDT-D-2, Revision 1, was reviewed, and it appeared to conform to the requirements.
c.
Volumetric Examination N.
Review of UT Procedure No. NDT-C-4 (dated January 1974) showed
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that it conformed to the requirements.
Review of four other UT procedures (NDT-C-1, NDT-C-2, NDT-C-8, and NDT-C-9) showed that they, likewise, conformed to requirements.
3.
Qualifications of Nondestructive Examination Personnel
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Review of the test vendor's personnel qualification documents
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(training and performance records and visual acuity test) showed
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conformance to the requirements of SNT-TC-1A and its supplements and appendices, as applicable for the examination techniques and
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methods used. These rec.ords for 16 test technicians were reviewed.
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Basic Calibration Status of Test Instruments a.
Electronic
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Review of records regarding the calibration of ultrasonic test
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instruments showed that the requirements were met, i.e.,
test and calibration history records for UT instruments, Sarial No.
731473, dated October 24, 1973, and Serial No. 702, dated
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November 21, 1973, showed sweep linearity had been evaluated and found to conform.
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b.
Transducers Documentation attesting to the conformance of each transducer to the qualitative and quantitative requirements of the ASME Code, engineering specifications, and/or test procedures were acqtiired at the site af ter the fact of use. However, this deficiency was fully controlled and corrected.
Conforming documentation for all transducers identified on the test result data sheets are now available at the site, i.e., such records provided by Aerotec Laboratory for transducers serial
- Nos. 4932, CS2508, 4932, and CS2508 were reviewed.
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5.
Material Certifications a.
Couplant UT
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Material certification for the ultrasonic test couplant were
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available and were found to conform to the requirements of the
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procedures.
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b.
Test Blocks s
Material certifications, to demonstrate that each ultrasonic test block met the requirements of the code in regard to "P" number, were reviewed and found to conform in all areas.
This
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information was acquired after the fact of use and is identified on CE (Earl Fotter) report dated July 17, 1974.
c.
Liquid Penetrant Material certifications to demonstrate that liquid penetrant
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test material met the requirements of the code were reviewed and found to conform to the requirementa.
For example, the manufacturer's certifications for each of the following batches were reviewed: No. 056 and No. 3J086.
6.
Records
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The "as done" records were reviewed and found to meet all requirements.
The final evaluation of those test results by the test vendor is not complete, as yet.
However, no significant, negative finding hau been reported.. Review of the record package showed that all of the required information regarding ultrasonic testing has been.
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organized on calibration sheets and cross reference to inspection data sheets. The inspection calibration data sheets identify the test block used by serial number. The instrument, the transducer, the test technician, the pipe spool and weld number.
The data sheet end calibration sheet information, and the requirements and
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results of other testing for a given weld, is summarized on a
" summary sheet".
The summary sheet provides for immediate deter-mination of the inspection requirements and results, and provides a key for locating the pertinent calibration and data sheet.
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UNITED STATES J.' Q~.',7j.
ATOMIC ENERGY COMMISSION
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DIRECTOR ATE OF REGULATORY OPER ATIONS
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REGION 111 Fat t 799 ROOSEVELT ROAD 7ggyfuong
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GLEN ELLYN. ILLINots 6o137 (312)858-2650
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A.
RO Inspection Report No.
050-010/74-11
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October 31, 1974 Transmittal Date
Distribution:
Distribution:
RO 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 Licencing (13)
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B.
RO Inquiry Report No.
Transmittal Date
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Distribution:
Distribution:
R0 Chief, FS&EB RO Chief, FS&EB RO:HQ (5)
RO:HQ
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DR Central Files DR Central Files Regulatory Standards (3)
RO Files
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Licensing (13)
RO Files C.
Incident Notification From:
(Licensee & Docket No. (or License No.)
Transmittal Date
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Distribution:
Distribution:
RO Chief, FS&EB R0 Chief, FS&EB RO:HQ (4)
RO:HQ (4)
Licensing (4)
L:D/D for Fuels & Materials DR Central Files DR Central Files
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RO Files R0 Files
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