ML20147E340

Responds to Re Interpretation of 10CFR50.72 & 50.73 Reportability Requirements for Partial Spurious Reactor Scrams During Shutdown.All But Preplanned Actuations Should Be Reported

ML20147E340
Person / Time
Site:	Fort Saint Vrain
Issue date:	01/05/1988
From:	Heitner K Office of Nuclear Reactor Regulation
To:	Robert Williams PUBLIC SERVICE CO. OF COLORADO
References
TAC-66507, NUDOCS 8801210084
Download: ML20147E340 (4)

Text

January 5,1988 Docket No. 50-267 Mr. R. O. Williams, Jr.

Vice President, Nuclear Operations Public Service Company of Colorado P.'0.

Box 840 i

Denver, Colorado 80201-0840

SUBJECT:

INTERPRETATION OF 10 CFR PARTS 50.72 AND 50.73 FOR PARTIAL SPURIOUS REACTOR SCRAMS DURING SHUTOOWN (TAC NO. 66507)

We have reviewed your letter dated October 12, 1987 (P-87358) requesting an interpretation of 10 CFR 50.72 and 50.73.

Your request concerned the applicability of reporting partial reactor scrams during shutdown under these regulations.

In considering your letter, we reviewed it against both the referenced regulations, and the Statement of Considerations originally published at 48 FR 39039 on August 29, 1983.

We also considered our previous inspection of the spurious responses of the Fort St. Vrain Plant Protective System, discussed in Inspection Report 50-267/87-12.

It is the staff's position under 10 CFR 50.72 and 50.73 to require that all manual or automatic actuations of the reactor scram system, with the exception of those that are preplanned, be reported.

This includes the situations in which control rods may already be inserted as described in your letter.

Our review of 10 CFR 50.72 and 50.73 reports from operating plants shows that the industry, in general, similarly interprets the regulation.

We therefore request that you continue to report all reactor scram events not resulting from or part of a preplanned sequence during testing or reactor operation.

Sincerely, t il Kenneth L. Heitner, Project Manager Project Directorate - IV Division of Reactor Projects - III, IV, V and Special Projects cc:

See next page DISTRIBUTION iDocket File 7 NRC PDR Local POR PD4 Reading DR4A J. Calvo P. Noonan K. Heitner 0GC-Bethesda E. Jordan J. Partlow R. Lobel W. Lanning ACRS (10)

PD4 Plant File

• See previous concurrences:

PO4/LA*

PO4/PM*

PO4/0*

EAB*

EABA OGC*

PNoonan KHeitner: sr JCalvo RLobel WLanning 12/07/87 12/08/87 12/08/87 M/17/87 12/17/87 01/05/88 8801:210084 800105 ADOCK 050 7

gDR

Docket No. 50-267 Mr. R. 0.' Williams, Jr.

Vice President, Nuclear Operations Public Service Company of Colorado-P. O. Box 840 Denver, Colorado 80201-0840

SUBJECT:

INTERPRETATION OF 10 CFR PARTS 50.72 AND 50.73 FOR PARTIAL SPURIOUS REACTOR SCRAMS DURING SHUTDOWN (TAC N0. 66507)

We have reviewed your letter dated October 12, 1987 (P-87358) requesting an interpretation of 10 CFR 50.72 and 50.73.

Your request concerned the applicability of reporting partial reactor scrams during shutdown under these regulations.

In considering your letter, we reviewed it against ooth the referenced regulations, and the Statement of Considerations originally published at 48 FR 39039 on August 29, 1983.

We also considered our previous inspection of the spurious responses of the Fort St. Vrain Plant Protective System, discussed in Inspection Report pg 50-267/87-12.

f It is the staff's p^'Q%et 50.72 and 50.73 rcquire=e et all manual

/

's or automatic actuations of the reactor scram system, with the exception of those that are preplanned, eust be reported.

This includes the situations i which control rods may already be inserted as described in your letter.

Our review of 10 CFR 50.72 and 50.73 reports from operating plants shows that the industry, in general, similarly interprets the regulation.

We therefore request that you continue to report all reactor scram events not resulting from or part of a preplanned sequence during testing or reactor operation.

Sincerely, Kenneth L. Heitner, Project Manager Project Directorate - IV Division of Reactor Projects - III, IV, V and Special Projects cc:

See next page DISTRIBUTION Docket File NRC PDR Local PDR PD4 Reading OR4A J. Calvo P. Noonan K. Heitner OGC-Bethesda E. Jordan J. Partlow R. Lobel W. Lanning ACRS (10)

PD4 Plant File aSee previous concurrences:

U' 3.b g

PD4/LA*

PD4/PM*

PD4/D*

EAB*

EAB*

OGC PNoonan KHeitner: sr JCalvo RLobel WLanning c

12/07/87 12/08/87 12/08/87 12/17/87 12/17/87 12f--/8P I/5lG7

Docket No. 50-267 Mr.'R. 0 Williams, Jr.

Vice President, Nuclear Operations Public Service Company of Colorado P. O. Box 840 Denver, Colorado 80201-0840

SUBJECT:

INTERPRETATION OF 10 CFR PARTS 50.72 AND 50.73 FOR PARTIAL SPURIOUS REACTOR SCRAMS DURING SHUTDOWN (TACN0.66507)

We have reviewed your letter dated October 12, 1987 (P-87358) requesting an interpretation of 10 CFR 50.72 and 50.73. Your request concerned the applicability of reporting partial reactor scrams during shutdown under these regulations.

In considering your letter, we reviewed it against both the referenced regulations, and the Statement of Considerations originally published at 48 FR 39039 on August 29, 1983.

We also considered our previous inspection of the spurious responses of the Fort.St. Vrain Plant Protective System, discussed in Inspection Report 50-267/87-12.

The staff interpretation of 10 CFR 50.72 and 50.73 requires that all manual or automatic actuations of the reactor scram system, with the exception of those that are preplanned, must be reported. This includes the situations'in which control rods may already be inserted as described in your letter. Our

-review of 10 CFR 50.72 and 50.73 reports from operating plants shows that the industry, in general, uses this same interpretation.

We therefore request that you continue to report all reactor scram events not resulting from or part of a preplanned sequence during testing or reactor operation.

Sincerely, Kenneth L. Heitner, Project Manager Project Directorate - IV Division of Reactor Projects - III, IV, Y and Special Projects cc: See next page DISTRIBUTION Docket File NRC PDR Local PDR PD4 Reading DR4A J. Calvo P. Noonan K. Heitner 0GC-Bethesda E. Jordan J. Partlow R. Lobel W. Lanning ACRS(10)

PD4 Plant File PD4/L Q

PD4/PM

.PD4/D /TN EAB E

0GC PNoon KHeitner:sr JCalvo RLobel Yning 1A/9/87 17/g/87 11/V/87 11/p/87

/87 11/ /87

t Mr. R. O. Williams, Jr.

Public Service Company of Colorado Fort St. Vrain cc:

Mr. D. W. Warembourg, Manager Albert J. Hazle, Director Nuclear Engineering Division Radiation Control Division Public Service Company Department of Health of Colorado 4210 East lith Avenue P. O. Box 840 Denver, Colorado 80220 Denver, Colorado 80201-0840 Mr. David Alberstein,14/159A Mr. R. O. Williams, Jr., Acting Manager GA Technologies, Inc.

Nuclear Production Division Post Office Box 85608 Public Service Company of Colorado San Diego, California 92138 16805 Weld County Road 19-1/2 Platteville, Colorado 80651 Mr. H. L. Brey, Manager Nuclear Licensing and fuel Division Mr. P. F. Tomlinson, Manager Public Service Company of Colorado Quality Assurance Division P. O. Box 840 Public Service Company of Colorado Denver, Colorado 80201-0840 16805 Weld County Road 19-1/2 Platteville, Colorado 80651 Senior Resident Inspector U.S. Nuclear Regulatory Commission Mr. R. F. Walker P. O. Box 640 Public Service Company of Colorado Platteville, Colorado 80651 Post Office Box 840 Denver, Colorado 80201-0840 Kelley, Stansfield & 0'Donnell Public Service Company Building Commitment Control Program Room 900 Coordinator 550 15th Street Public Service Company of Colorado Denver, Colorado 80202 2420 W. 26th Ave. Suite 100-D Denver, Colorado 80211 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 Chairman, Board of Ccunty Commissioners of Weld County, Colorado Greeley, Colcrado 80631 Regional Representative Radiation Programs Environmental Protection Agency 1 Denver Place 999 18th Street, Suite 1300 Denver, Colorado 80202-2413

_