ML20207E286

Informs of Insp Sheduled for 880928-29 to Review Program for Monitoring Pipe Wall Thinning.Insp Outline Encl

ML20207E286
Person / Time
Site:	Rancho Seco
Issue date:	08/08/1988
From:	Kalman G Office of Nuclear Reactor Regulation
To:	Firlit J SACRAMENTO MUNICIPAL UTILITY DISTRICT
References
NUDOCS 8808170299
Download: ML20207E286 (6)

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August'8, 1988 '

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l Docket No. 50-312 DISTRIBUTION f;Occhet.F11e l

NRC & Local ~PDRs .

l PDS Reading l GMHolahan l Mr. Joe Firlit GKalman i Chief Executive Office, Nuclear 0GC (for info only)

Rancho Seco Nuclear Generating Station EJordan ,

14440 Twin Cities Road BGrimes Herald, California 95638 9799 ACRS (10)

SUBJECT:

PIPE WALL THINNING INSPECTION j An NRC headquarters inspection team is planning a two-day, announced inspection at Ran:ho Seco on September 28 and 29,1988 to review your program for monitoring pipe wall thinning. The inspection outline is included as an enclosure to this letter. Please be prepared to respond to the individua, items on the inspection outline. If you hsve any questions regarding this i matter, contact the NRC project manager assigned to your plant.

Sincerely. l original signed by George Kalman, Project Manager Project Directorate V Division of Reactor Projects - !!I, IV, V and Special Projects l

Enclosure:

As stated See next page I

\ l l c c t- Paul Wu i 1

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NAME :GKalman :GWK 6n :  :  :  :  : i

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0FFICIAL RECORD COPY

{@l 8808170299 880808 l1 PDR ADOCK O'J000312 '

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August 8, 1988 t

Cocket No. 50-312 DISTRIBUTION Docket File NRC & Local PDRs PDS Reading GMHolahan Mr. Joe Firlit GKalman Chief Executive Office, Nuclear OGC(forinfoonly)

Rancho Seco Nuclear Generating Station Edordan 14440 Twin Cities Road BGrimes Herali, California 95638-9799 ACRS(10)

SUBJECT:

PIPE WALL THIhNING INSPECTION An NRC headquarters inspection team is planning a two-day, announced inspection at Rancho Seco on September 28 and 29,1988 to review you. program for monitoring pipe wall thinning. The inspection outline is included as an enclosure to this letter. Please be prepared to respond to the individual items on the inspection outline. If you have any questinns regarding this matter, contact the NRC project manager assigned to your pl3nt.

Sincerely, original signed by George Kalman, Project Manager Project Directorate Y Division of Reactor Projects . III, IV, Y and Special Projects

Enclosure:

As stated See next page c:t- Paul k'u i

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NAME :GKalman :GW 6n :  :  :  :  :

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DATE :8/ 9/88 :8/K/88  :  :  :  :  :

OFFICIAL RECORD COPY

' ~%, UNITED STATES

! o NUCLEAR REGULATORY COMMISSION g j .

WASHINGTON, D. C. 20555

%,,,,, August 8, 1988 Docket No. 50-312 Mr. Joe Firlit Chief Executive Office, Nuclear Rancho Seco Nuclear Generating Station 14440 Twin Cities Road Herald, California 95638-9799

SUBJECT:

PIPE WALL THINNING INSPECTION An NRC headquarters inspection team is planning a two-day, announced inspection at Rancha Seco on September 28 and 29, 1988 to review your program for monitoring pipe Nll thinning. The inspection outlin. is ir.cluded as an enclosure to this letter. Please be prepared to respond to the individual items on the inspection outline. If you have any questions regardir.g this matter, contact the NRC project manager assigned to your plant.

Sincerely.

.njg C' ^

George Kalman, Project Manager Pr0 ject Directorate Y Division of Reactor Projects - III, IV, V and Special Projects

Enclosure:

As stated i i

See next page cc: Paul Wu I

4 g Mr. Joe Firlit Rancho Seco Nuclear Generating Chief Executive Officer, Nuclear Station Sacramento Municipal Utility District 14440 Twin Cities Road Herald, California 95638-9799 cc:

Mr. David S. Kaplan, Secretary Mr. John Bartus and General Counsel Ms. JoAnne Scott Sacramento Municipal Utility Federal Energy Regulatoiy Comission District 825 North Capitol Street, N. E.

6201 S Street Washington, D.C. 20426 P. O. Box 15830 Sacramento, California 95813 Mr. Barclay S. Lew Pacific Gas and Electric Company Thomas A. Baxter, Esq. 77BealeStreet(333/A613)

Shaw, Pittman, Potts & Trowbridge San Francisco, CA 94106 2300 N Street, N.W.

Washington, D.C. 20037 Ms. Helen Hubbard P. O. Box 63 Mr. Steven Crunk Sunol, California 94586 Manager, Nuclear Licensing Sacramento Municipal Utility District Rancho Seco Nuclear Generating Station 14440 Twin Cities Road Herald, Celifornia 95638-9799 Mr. Robert B. Borsum, Licensing Representative  !

Babcock & Wilcox Nuclear Power Division 1700 Rockville Pike - Suite 525 ,

Rockville, Maryland 20852 Resident Inspector / Rancho Seco l

c/o U. S. N. R. C. t 14440 Twin Cities doad Herald, California 95638 l

Regional Administrator, Region V I U.S. Nuclear Regulatory Comission l 1450 Maria Lane, Suite 210 l

Walnut Creek, Californi< 94596 l 1

Mr. .Fck McGurk, Acting Chief Ra' igical Health Branch St 'epartment of Health Services i Office Building #8 714 .!+

Su-

.,alifornia 95814 '

Sacramento County Board of Supervisors 700 H Street, Suite 2450 Sacramento, California 95814

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S. . l ENCLOSURE 1 i 1

PIPE WALL THINNING INSPECTION PROGRAM IMPLEMENTATION EVALUATION g!TERIA l Purpose ,

The purpose of this instruction is to define the evaluation criteria for review ~

of licensee's erosion / corrosion monitoring program and its implementation.

Through selective examination of the licensee s program for monitoring pipe wall thinning, the procedures defining the activities to be accceplished are verified for consistency with licensee's program comitment.

Requirements I. Review of Licensee's Erosion / Corrosion Monitoring Program - .

1. Does the licensee's progrrht have well defined criteria for:

a. selecting inspection points  ;

b. detennining inspection frequency

c. defining method of inspection

d. enking replacement /r!.: pair decisions

2. Does the licensee's program meet the intent of WUMARC guidelines? l II. Review of Licensee's Implementation of Erosion / Corrosion Monitoring i Program

1. Inspection procedures and guidelines

a. Procedures have been properly reviewed and approved before their implementation,

b. Procedures cover periodic monitoring of high energy safety-related and nonsafety-related carbon steel. '

c. Procedures, provide for qualification or certification of personnel, equipment, or procedures consistent with established program comitments.

. 2. Qualification of inspectors ,

n. Personnel conducting MDE examinations are properly certified

b. The licensee has a well developed training program

3. Inspection method and equipment calibration

a. Method of NDE and related equipments have been calibrated against known standards for types of metals and range of thickness to be measured 6

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b. Measurements of pipe wall thickness cre being accomplished in accordance with established instiactions and results are being appropriately documented.

4. Evaluation of the results of pipe wall measurements and determinations on the need for corrective action or frequency of continued periodic monitoring is being accomplished by qualified personnel.

5. Need for replacement, repair, or continued monitoring of piping which has been subjecter to pipe wall thinning has been (or will be) determined and schedule established is yet to be accomplished.

6. Adruinistrative control and management support III. History of Pipe Wall Thinning

1. When did the licensee develop its erosion / corrosion monitoring program?

2. History of pipe wall thinning

3. Failure analysis and damage mechanism IV. Review of Licensee's Plan for Developing or Revising Its Erosion / Corrosion Monitoring Program

1. Deve" snt of long-term inspection program for single-phase systems

2. Development of guidelines and computer code for two-phase piping systems similar to those developed for the single-phase systems.

V. Verification of Licensee's Comitments Made In Its Response to NRC Bulletin T/-01 I

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