ML19257A980
| ML19257A980 | |
| Person / Time | |
|---|---|
| Issue date: | 01/23/1978 |
| From: | Pawlicki S Office of Nuclear Reactor Regulation |
| To: | Dearien J EG&G, INC. |
| References | |
| CON-FIN-A-6162, REF-GTECI-B-01, REF-GTECI-EN, TASK-B-01, TASK-B-1, TASK-OR NUDOCS 8001140158 | |
| Download: ML19257A980 (4) | |
Text
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John A.
Dearter.,
Manager
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Applications and Analysis Division
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EG&G g)
Box 1625 Idaho Falls, Idano 63401
Subject:
IREL Technical Assistance to the Office of the Assistant Director for Engineering. Division of Systems Safety. Office of nuclear Reactor Regulation, NRC (FIN #AC162) oear nr. Daarian:
IHEL is requested to provide W " ical assistance described in. " Scope of Wcr. Task B-1 under the progran entitled,
Inscrvice Inspection," FIl (A6162, echnical evaluation is required of the nondestructive r.iethods ano techniques described in Attachnent 2
Pressurizer Surge Line Intemediate Pipe Rupture Protection, McGuire Huclear Station, Units I and II," and subsequent ament:ents.
Prior to the detailed technical evaluation, we request that your staff nake an assessnent of the estimated expenditure and time schedule for Tesk 0-1 and contact the DSS cognizant enginecr, H. R. Hum (FTS 492-7255).
Based on our discussion with B. F. Saffell, Jr., E G & G, on January 11, 1978 we understand that you will make the appropriate coordination and distribution of documents within INEL.
Sincerely, Ty&iEifiedbt?
S. S. Pawlicld S. S. Pawlicki, Chief Haterials Engineering Branch Division of Systens Safety Office of ttoclear Reactor Regulation
Enclosure:
As statea cc: Mr. W. W. Bixby. Chief For distribution, Code Development t. Seraiscale Branch see attached sheet U. S. Departr.ient of Energy Idaho Operations Office 1745 511 550 Second Street Idaho Falls. Idaho 83401 I
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R. J. Mattson, DSS 4.Dr Crutchfield, NRR J. P. Knight, DSS S. S. Pawlicki, DSS X. Kniel, DPM R. J. Bosnak, DSS U. Potapovs, DSS H. F. Conrad, DSS B. L. Grenier, DSS R. A. Birkel, DPM M. Hartzman, DSS M. R. Hum, DSS Central File NRR Reading File MTEB Reading File CN 10 RE 1.1-1 1745 112 orrsca ts-summaur >
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SCOPE OF WORK, TASK B-1 Scope of Work:
INEL is requested to provide a technical evaluation of the nondestructive methods and techniques described in the document, " Pressurizer Surge Line Intermediate Pipe Rupture Protection, McGuire Nuclear Station, Units I and II," dated December 14, 1977. A specific comparison is not required of the relative merits of pipe break protection versus augmented inservice inspection.
The technical evaluation should consider the effectiveness of the examination method, examination procedure and calibration block material to detect the flaw sizes in the evaluation standards for the intermediate break locations in the pressurizer surge line defined in Sections 4.0 and 5.0.
An estimate of the minimum detectable flaw sizes for a fatigue crack using the described ultrasonic technique would be meaningful sup-porting information. An estimate of an appropriate inspection interval would be desirable.
Comments and recommendations should be prepared based on the use of manual nondestructive examination methods. Supplemental or alternate techniques, such as surface examination or leakage detection systems, can be considered by INEL to increase the assurance of detecting the rejectable flaws defined in the ASME Code,Section XI. The recomenda-tions can include basic fracture mechanics considerations to estimate the appropriate augmented ISI program inspection interval.
Revisions and Amendments:
Revisions and amendments to the review document are anticipated.
Task B-1 should remain open until September 1,1978 or a final NRC determination on the pressurizer surge line, whichever is the earlier date.
Scheduled Milestones:
1.
A written technical evaluation should be received within 30 days of receipt of this request.
2.
Milestones for revisions or amendments will be determined as necessary based on the required Scope of Work.
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Technical Reporting Requirements:
1.
The written evaluation submitted based on the review document and subsequent revisions or anendments should be a single reproducible copy in letter report form.
2.
A final summary report on Task B-1 is required upon completion of the task and should be a single reproducible copy in letter report form.
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