ML20154H379

Forwards Safety Evaluation Approving Continued Use of Hafnium Rods,Insertion of Two New Similar Rods for Cycle 23 & Use of Licensee Proposed Surveillance Program

ML20154H379
Person / Time
Site:	Big Rock Point File:Consumers Energy icon.png
Issue date:	05/17/1988
From:	Scott W Office of Nuclear Reactor Regulation
To:	Berry K CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
Shared Package
ML20154H383	List: ML20154H379 ML20154H405
References
TAC-67972, NUDOCS 8805250321
Download: ML20154H379 (3)

Text

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< May 17, 1988 Docket No. 50-155 Mr. Kenneth W. Berry Director, Nuclear Licensing Consumers Power Compar.y 1945 West Parnall Road Jackson, Michigan 49201

SUBJECT:

BIG ROCK POINT, CONTINUED USE OF NUCOM HAFNIUM CONTROL BLADES (TAC NO. 67972)

Hafnium control blades manufactured by NUCOM were approved for Big Rock Point Plant (BRP) use by Amendment 88 to BRP Technical Specifications, subject to a post-Cycle-22 operation control blade inspection and a continuing surveillance program to be based on the results of that inspection. By letter dated April 28, 1988, the Consumers Power Company submitted information regarding the results of the post-Cycle-22 control blade inspection, proposed a continuing surveillance prograrn, and requested approval for the continued use of the hafnium rods and the surveillance program.

As stated in the enclosed Safety Evaluation, the NRC staff has reviewed the results of the post-Cycle-22 surveillance and has concluded that the NUCOM control blades have performed as expected and within Technical Specification limits for scram times, rod worths, and mechanical integrity. Therefore, we find that the continued use of the present six NUCOM rods and the insertion of two new similar rods for Cycle 23 are acceptable.

The NRC staff has also reviewed the proposed surseillance program for future cycles. That surveillance program is essentially a continuation of the existing program, which consists of visual inspection, physics testing, and comparison of physics measurement to computer predictions. We find the use of that surveillance program acceptable.

Sincerely, j "y$eYSEott, Jr. , Project Manager Project Directorate III-1 Division of Reactor Projects - III, IV, V & Special Projects

Enclosure:

Safety Evaluation l l

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May 17, 1988 Docket No. 50-155 Mr. Kenneth W. Berry Director, Nuclear Licensing Consumers Power Company 1945 West Parnall Road Jackson, Michigan 49201 i

SUBJECT:

BIG ROCK POINT, CONTINUED USE OF NUCOM HAFNIUM CONTROL BLADES (TAC NO. 67972) l Hafnium control blades manufactured by NUCOM were approved for Big Rock Point Plant (BRP) use by Amendment 88 to BRP Technical Specifications, subject to a i post-Cycle-22 operation control blade inspection and a continuing surveillance program to be based on the results of that inspection. By letter dated April 28, 1988, the Consumers Power Company submitted information reg 6rding the

! results of the post-Cycle-22 control blade inspection, proposed a continuing surveillance program, and requested approval for the continued use of the hafnium rods and the surveillance program. .

t i As stated in the enclosed Safety Evaluation, the NRC staff has reviewed the

! results of the post-Cycle-22 surveillance and has concluded that the NUCOM control blades have performed as expected and within Technical Specification limits for scram times, rod worths, and mechanical integrity. Therefore, we find that the continued use of the present six NUCOM rods and the insertion of iwo new similar rods for Cycle 23 are acceptable.

i The NRC staff has also reviewed the proposed surveillance program for future cycles. That surveillance program is essentially a continuation of the existing program, which consists of visual inspection, physics testing, and .

comparison of physics measurement to computer predictions. We find the use of that surveillance program acceptable.

Sincerely, l

$)nt { $

Wayrfe E. Scott, Jf.', Project Manager Project Directorate III-1 Division of Reactor Projects - III, l IV, V & Special Projects l

Enclosure:

Safety Evaluation i i

cc w/ enclosure See next page

t i

! Mr. Kenneth W. Berry  !

Consumers Power Gompany Big Rock Point Plant i

)

i cc:

Mr. Thomas A. McNish, Secretary I Consumers Power Company i

i 212 West Michigan Avenue j Jackson, Michigan 49201  ;

' Judd L. Bacon, Esquire Consumers Power Company '

4 212 West Michigan Avenue

] Jackson, Michigan 49201 '

l Mr. Thomas W. Elward  ;

Plant Manager

Big Rock Point Plant f

10269 U.S. 31 North j Charlevoix, Michigan 49720 Mr. Bud Heeres  :

County Commissioner  :

1 303 Sheridan Charlevoix, Michigan 49720  !

! Office of the Governor i Room 1 - Capitol Building 1 Lansing, Michigan 48913 ,

i Regional Administrator, Region III  !

U.S. Nuclear Regulatory Commission '

799 Roosevelt Road l Glen Ellyn, Illinois 60137

• i huclear Facilities and Environmental l Monitoring Section Office i

Division of Radiological Health l

) P. O. Box 30035 i

! Lansing, Michigan 48909 1 .

j U.S. Nuclear Regulatory Commission i 1 Resident Inspector Office i j Big Rock Point Plant 1

10253 U.S. 31 North  :

i Charlevoix, Michigan 49720  !

l i 4

i I 1  !

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