IR 05000338/1982009
| ML20053B464 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 05/05/1982 |
| From: | Girard E, Herdt A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML20053B445 | List: |
| References | |
| 50-338-82-09, 50-338-82-9, 50-339-82-09, 50-339-82-9, NUDOCS 8205280427 | |
| Download: ML20053B464 (9) | |
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UNITED STATES
NUCLEAR REGULATORY COMMISSION o
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REGION 11
o 101 MARIETTA ST., N.W., SUITE 3100 o
ATLANTA, GEORGIA 30303
P Report Nos. 50-338/82-09 and 50-339/82-09 Licensee:
Virginia Electric and Power Company
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P. O. Box 26666
Richmond, VA 23262 Facility Name:
North Anra Docket Nos. 50-338 and 50-339 License No. NPF-4 and NPF-7 Inspection at North Anna site near Mineral, Virginia Inspector:
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E. H,_Gi r Pd ate Signed Approved by:
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g A. R.1erdt, Sect #
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Engineering Inspec ion Branch i
Division of Engineering and Technical Programs
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SUMMARY
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Inspection on April 5-9, 1982
Areas Inspected This routine, unannounced inspection involved 39 inspector-hours on. site in the areas of licensee action on previous inspection findings (Unit 1), inservice inspection program (Unit 2), inservice inspection procedures (Unit 2) and
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l inservice inspection work (Unit 2).
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Resqlts
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No violations or deviations were identified.
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l REPORT DETAILS 1.
Persons Contacted Licensee Employees
- W. R. Cartwright, Station Manager
- J. Harper, Superintendent - Maintenance
- R. Sidle, Supervisor - Maintenance Service
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- F. P. Miller, Supervisor - QC, 0 and M
- C. R. Gordon, Supervisor - NDE ( Acting)
V. Lawsbe, Senior Engineering Techician Other Organizations J. Bell, Westinghouse NSD R. Lofgreen, ET Data Reviewer, Conam NRC Resident Inspector D. Johnson M. Shymlock
- Attended exit interview 2.
Exit Interview The inspection scope and findings were summarized on April 9, 1982, with those persons indicated in paragraph 1 above. The inspector described the areas inspected and discussed in detail the findings listed below.
(0 pen) Unresolved Item (339/82-09-01):
Boron injection and accumulator tanks not included in PSI or ISI program, paragraph 7.
,(0 pen) Unresolved Item (339/82-09-02):
ISI requirements for steam generator snubbers, paragraph 5.
(0 pen) Unresolved Item (339/82-01-03):
Examination of Class 1 integral attachment welds, paragraph 6.
3.
Licensee Action on Previous Inspection Findings a.
(Closed) Unresolved Item (338/81-01-01):
Revision of EC Procedure 42-EC-041. This item involved an inspector's concern that eddy current (EC) procedure 42-EC-041 lacked specifics relative to examiner qualification requirements, conditions requiring confirmation of calibration, and reference to code requirements. In the current
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inspection, the NRC inspector found that procedure 42-EC-041 had been replaced with procedure NDE-ET-1 Rev. O.
The inspector reviewed this procedure and considers it to adequately address the previously expressed concerns. This matter is closed.
b.
(0 pen) Unresolved Item (338/81-04-03):
Applicable Welding Code Discrepancies. This item involved an inspector's concern that:
(1) The licensee's QA manual (NPSQAM) and General Welding Procedure specified different code revisions for qualification of welders and welding procedures.
(2) The welding foreman responsible for welder qualificatic 1 was not assigned copies of the codes applicable to the qualifications.
When the item was identified, licensee management agreed to determine the applicable codes and to provide copies to the aforementioned welding foreman.
Licensee management documented completion of this commitment on their Outstanding Items Form 1-646.
The inspector reviewed this form, which identified the code and revision for welding qualifications as ASME Section IX (74S75). The inspector checked with the foreman and found that this code revision had not been provided to him. Informed of this by the inspector, licensee management indicated they would assure that the proper code was provided to the foreman.
This item remains open pending Region II's verification that the commitments made by the licensee have been met.
4.
Unresolved Items Unresolved items are matters about which more information is required to determine whether they are acceptable or may involve violations or devia-tions. New unresolved items identified during this inspection are discussed in paragraphs 5, 6, and 7.
5.
Inservice Inspection - Review of Program (Unit 2)
The inspector reviewed aspects of the licensee's inservice inspection (ISI)
program for completeness and conformance with regulatory requirements and the licensee's commitments. Based on the licensee's Technical Specification and 10 CFR 50.55a, the applicable code for ISI is currently ASME Section XI (74S75). Steam generator tube eddy current examinations are required to be in accordance with NRC Regulatory guide 1.83 Rev.1. Augmented ISI exam-inations are specified for certain steam generator (SG) support welds in Sec ion 4.4.10.2 of the Technical Specifications; and, according to the licensee, augmented ISI requirements for SG snubbers are described in FSAR Sections 5.5 and 5.7a.
In addition, the FSAR indicates increased inspection frequency for certain high energy piping welds and valves (Section 3.6.2 and Comment C.2).
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The inspector reviewed and discussed the licensee's ISI examination program documents with cognizant site personnel to determine whether the documents included:
a.
Appropriate licensee approvals b.
Identification of proper scope of inspection including:
(1) ASME Section XI required examination areas, categories, methoas and extent (2) Augmented ISI and steam generator tube ISI examinations specified as described in the FSAR and Technical Specifications c.
Properly specified inspection intervals and extent of inspection during each interval d.
Provisions for proper administrative; controls and records including (1) Examination results and data sheets (2) Identification of equipment used (3) Calibration data (4) Identification of calibration blocks Documents reviewed by the inspector relative to the above areas included:
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Inservice Inspection Plan of The North Anna Nuclear Power Plant Unit 2
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Maintenance Department Administrative Procedures M.D. ADM 11.1 and 11.3 In his review and discussion of the ISI program documents with licensee
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personnel, the inspector noted that the program did not contain l
requirements for examinations or tests of the steam generator (SG)
snubbers. Licensee personnel indicated that they planned to include these snubbers in the ISI program, but that the commitment for this
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ISI, as stated in the FSAR, required clarification. They informed the inspector that they were taking steps to obtain the needed clarifica-tion. The inspector stated that inclusion of appropriate examinations and tests for the SG snubbers in the ISI program would be considered an unresolved item, identified 339/82-09-02, "ISI Requirements for Steam Generator Snubbers."
Responsible licensee personnel noted that addi-tions and revisions to their ISI program documents were in progress including further Jevelopment of programmatic procedures and requests for relief from required examinations.
Within the area inspected, no violations or deviations were identified.
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6.
Inservice Insr'
.on - Review of Procedures (Unit 2)
The inspector selectively reviewed the licensee's ISI examination procedures for compliance with regulatory requirements and licensee commitments. The details of the review are described in the following paragraphs:
a.
Procedure Approvals and Personnel Qualification Requirements The below listed sample of ISI procedures, selected from those indicated for use in this outage, were examined by the inspector to verify that they had been properly approved and that they contained or referenced appropriate personnel qualification requirements:
(1) VEPC0 Procedure NDE-ET-1, Rev. O, " Eddy Current Examination" (2) W-NSD Procedure ISI-11, Rev. 9, Am. 3,
" Liquid Penetrant Examination Procedure" (3) W-NSD Procedure ISI-47, Rev. 2, Am. 6, Manual Ultrasonic Examination of Circumferential and Longitudinal Butt Welds in Ferritic Vessels of 2h" Thick and Greater" (4) W-NSD Procedure 15I-205, Rev. 2, Am. 3, Manual Ultrasonic Examination of Full Penetration Circumferential and Longitudinal Butt Welds" (5) W-NSD Procedure ISI-70, Rev. 1, " Magnetic Particle Examinations" (6) W-NSD Procedure OPS-NSD-101, Rev. 5, Am. 3,
"Preservice and Inservice Inspection Documentation" b.
Procedure Scope The inspector reviewed the licensee's ISI plan (Inservice Inspection Plan of the North Anna Nuclear Power Plant Unit 2) and the governing examination procedures for four ASME Section XI areas to determine whether they specified proper requirements for examination categories, i
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methods and extent in accordance with ASME Section XI. The examination areas and applicable procedure were as follows:
EXAMINATION AREA PROCEDURES B-B ISI-47 B-F ISI-205, ISI-11 B-K-1 ISI-205 C-E-1 ISI-11 The inspector found that the procedure specified for performance of ultrasonic examination on area B-K-1 (Integrally Welded Supports for Class 1 Piping, Pumps and Valves) welds did not appear to define the
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extent of examination in accordance with ASME Section XI.
The examination procedure is for butt welds, whereas in practice, welds in this area are generally "T" welds.
In discussions regarding piping integrally welded supports with one of the Level II examiners responsible for performing such examinations, the inspector was informed that only the base metal beneath such welds was normally examined.
Responsible licensee personnel agreed to contact the contractor responsible for the examination procedure and obtain any corrections required.
The inspector identified this matter as unresolved item 339/82-09-03, " Examination of Class 1 Integral Attachment Welds." The examination procedure and its implementation in the examination of integral attachment welds will be reviewed by Region II in a subsequent inspection.
c.
Procedure Technical Content As described below, the inspector selected and reviewed four of the licensee's ISI nondestructive examination procedures for technical content.
(1) Ultrasonic examination procedure ISI-47 was reviewed for adequate technical content relative to type of apparatus, extent of cover-age, calibrations, size and frequencies of search units, beam angles, distance - amplitude corrections, reference reflectors for transfer, reference levels for scanning and monitoring discontin-uities, demonstration of penetration, evaluation and recording levels for indications, method of reporting indications, and acceptance limits.
(2)
Liquid penetrant examination procedure ISI-11 was reviewed for adequate technical content relative to method, specification of penetrant materials, preexamination surface preparation, drying time after cleaning, penetrant application method and time, sur-face temperature, penetrant removal, drying prior to developing, developer type and application, examination time and technique, and evaluation technique.
(3) Magnetic particle examination procedure ISI-70 was reviewed for adequate technical content relative to examination method, surface preparation, particle color, surface temperature, par-ticle suspension, fluorescent viewing conditions, coverage, prod spacing and provisions to reduce arcing, prod magnetizing current, technique for coil method, acceptance critieria, and record requirements.
(4)
Eddy current examination procedure NDE-ET-1 was reviewed for technical content relative to equipment, frequencies, calibration and reporting.
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d.
Required Records The inspector reviewed penetrant examination procedure ISI-11, ultrasonic examination procedure 151-205, and related documentation procedure OP3-NSD-101 to verify that they identified compilation requirements (as applicable to each method) for:
(1) Examination results and data sheets (2) Examination equipment data (3) Calibration data (4) Calibration blocks (5) Examination materials (penetrant, cleaner, and couplant)
Within the areas inspected, no violation or deviations were identified.
7.
Inservice Inspection - Observation of Work and Work Activities (Unit 2)
The inspector observed ISI work and work activities, as described below, for compliance with regulatory requirements and licensee commitments. The code and regulatory guide requirements applicable to the ISI are identified in paragraph 5 above.
a.
ISI Plan The inspector found that the licensee did not have an all-inclusive
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schedule for the inspection period interval. The licensee's ISI plan covered the code required examinations (except areas B-K-2 and C-E-2)
for the first 40 month interval. The inspector reviewed the ISI plan and questioned licensee personnel responsible for ISI examinations to determine whether requirements and commitments for the current outage and 40 month inspection period would be met relative to (1) Number of items to be inspected (2) Methods of examination (3) Extent of examination The inspector found that the licensee did not plan ISI examinations for the boron injection tank or accumulator tanks and that these tanks had
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not been included in the preservice inspection (PSI) program. Licensee personnel stated that they considered these tanks to be exempt from PSI and ISI under the provisions of IWC-1200(c) of ASME Section XI.
IWC-1220(c) permits exemption of components, provided control of the chemistry of the contained fluid is verified by periodic sampling and tests. The code stated purpose of the sampling and tests is to assure that corrosion, particularly stress corrosion, is minimized. Licensee personnel indicate that their program provides the required sa,pling and tests.
It is the inspector's understanding that current practices for fluid chemistry control have not been affective in preventing stress corrosion and that the NRC has not accepted use of this exemption. The inspector informed the licensee that he would check
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further to obtain the formal NRC position on use of the subject exemption. The matter was identified as unresolved item 339/82-09-01,
" Boron Injection and Accumulator Tanks Not Included in PSI or ISI Program."
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b.
Qualifications and Certifications of Examiners The inspector reviewed the qualifications and certifications of ISI examiners from each of the three qualification levels to determine whether the qualification and certification records properly reflected the following:
(4; Employer's name (2) Person certified (3) Activity qualified to perform (4) Level of certification (5) Certification date (6) Certifying individual's signature, title and level (7) Annual visual acuity and color vision examination c.
Observation of Examination The inspector observed performance of selected ISI examinations as described below:
(1) Eddy Current Examinations Performed with Procedure NDE-ET-1 The inspector observed eddy current examination of steam generator tubes and discussed the practices used with the examiners who operated the equipment and reviewed the data obtained. Specific work observed by the inspector included examination of steam generator
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tubes R3C15, R3C16, and RSC15, and calibration performed following examination of steam generator
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tube
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R43C65. This work was observed to verify:
(a) Usa of approved procedure and equipment (b) Use of knowledgeable examination personnel with proper qualification levels (c) Proper recording of examination data (d)
Proper frequencies (e) Calibration standard adequacy (f)
Performance of calibration of proper intervals (2) Ultrasonic Examinations Performed with Procedure ISI-47 The inspector observed ultrasonic examinations of pressurizer welds and discussed the practices used with the Level II examiners.
Work observed included 45 and 60 scans on nozzle
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weld 10, a 45 scan on nozzle weld 14, and DAC verifications for the weld 10 scans. The work was observed to verify:
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4 (a) Use of approved procedure and equipment (b) Use of knowledgeable examination personnel with proper qualification levels (c) Proper recording of examination data (d) Satisfactory coverage and scanning technique (e) Calibration standard and performance (f) Sizes and frequencies of search units (g) Beam angles (h) Distance amplitude correction (i) Reference level for monitoring discontinuities (j) Demonstration of penetration (k) Evaluation and recording of indications (3) Penetrant Examination Performance with Procedure ISI-11 The inspector observed examination of pressurizer safe-end weld 11DM and discussed the practices used with the examiners.
The work was observed to verify:
(a) Use of approved procedure and materials (b) Use of knowledgeable examination personnel (c)
Identification of examination materials (d) Pre examination surface preparation (e) Drying after cleaning ( f) Penetrant application (g) Examination temperature (h) Penetrant removal (i) Drying af ter penetrant removal (j) Developer type, time of application and application method I
(k) Examination technique (1) Evaluation of indications (4) Visual Examination Performed With Procedure NDE-VT-1
The inspector and the licensee's Level II examiner re-inspected previously examined (in this outage) piping supports to verify the adequacy and accuracy of the recorded examination results. The supports checked were identified CC-PSD-2-DS-25 and CH-PSD-3-PS-1.
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The inspector verified the adequacy of the following:
(a) Type of visual examination used (b) Surface cleanliness of parts (c) Measurements and settings Within the areas inspected, no violations or deviations were identified.
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