ML17258A461
| ML17258A461 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 01/15/1982 |
| From: | Maier J ROCHESTER GAS & ELECTRIC CORP. |
| To: | Crutchfield D Office of Nuclear Reactor Regulation |
| References | |
| TASK-03-03.C, TASK-3-3.C, TASK-RR NUDOCS 8201200596 | |
| Download: ML17258A461 (20) | |
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/~II!lf!IISlllljl~il(Pdfilill8 ROCHESTER GAS AND ELECTRIC CORPORATION e 89 EAST AVENUE, ROCHESTER, N.Y. 14649 JOHN E. MA!BR Vice P<<eeident 7 Ci.C P H0 N K AREA COOK 7la 546-2700 January 15, 1 82/
Director of Nuclear Reactor Regulation Attention:
Mr. Dennis M. Crutchfield, Chief
'perating Reactors Branch No.
5 U.S. Nuclear Regulatory Commission Washington, D.C.
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Subject:
SEP Topic III-3.C, Inservice Inspection of Water Control Structures R.
E. Ginna Nuclear Power Plant Docket. No. 50-244
Dear Mr. Crutchfield:
During the initial Ginna Integrated Assessment.
- meeting, held.
in Bethesda from December 1 through December 3, 1981, a request for additional information regarding the October 12, 1981 Rochester Gas and Electric safety assessment for SEP Topic III-3.C was made.
A response to this request is included in the attachment.
This information should be sufficient for the NRC to develop a draft Safety Evaluation Report for this SEP topic.
Very truly yours, Jo E. Maier Attachment 820i20059h 820iiS t
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RGEE Response to NRC Request for Additional Information, SEP Topic III-3.C ITEM 1 Concern Regulatory Guide 1.127 suggests that a detailed checklist be developed and used for inspection of each water control structure, paying particular attention to detecting evidence of leakage,
- erosion, seepage, slope instability, undue settlement, displacement, tilting, cracking, deterioration, and improper functioning of drains and relief wells.
Although the Licensee's submittal identified a few of the items to be inspected for each water control structure, the list was not comprehensive.
Receuest Provide evidence, such as a copy of the inspector's checklist review sheet, indicating the items or features subjected to review or scrutiny during inspection of water control structures at the Ginna Nuclear Plant. If a detailed checklist is not used, provide the mechanism used by the inspector to report his findings.
RGEE Res onse The listing of features of the water control structures at Ginna to be inspected is provided in the purchase order to the inspectors, Martin and Graf Diving.
A copy of the 1981 inspection report is provided.
The objectives of the inspection, detailed in the Inspection Report, were developed by the divers, based on extensive experience, both of Ginna and other nuclear facilities.
No such formal procedures is in place for inspection of the revetment.
Periodic walkdowns of the revetment are expected to detect any obvious physical degradation.
ITEM 2 Concern Regulatory Guide 1.127 suggests that the inspection of water control structures should be conducted under the direction of qualified engineers experienced in the investigation,
- design, construction, and operation of such facilities.
No statement indicating compliance with this principle was made in the Licensee's submittal.
Receuest Identify the quality assurance personnel who are responsible for the ultimate assessment of the water control structures on the plant site.
Give their qualifications and state whether they are licensed professional engineers.
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RGRE Res onse The Ginna inspection program is directed by the plant Maintenance Engineer.
The present Maintenance Engineer has a
Bachelor of Science Degree in Nuclear Engineering, as well as a
Senior Reactor Operator License.
He is not a licensed Professional Engineer.
- However, any unusual findings by the diving team would be reported to the RGGE Engineering Department (Civil Engineering Section).
The Manager of Civil Engineering is a licensed Professional Engineer.
MARTINA, GRAF Diving P.O. Box 4713
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Rochester, Near Yorx 14612 (V16) 621-2021 Dayle O. Martin Richard C. Graf UNDERWATER PHOTOGRAPHIC INSPECTION of 90 INCH CIRCULATING PUMP IMPELLERS TRAVELING SCREENS (4)
'SERVICE WATER PUMP INTAKE SCREENS
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FIRE PUMP SCREENS (2) at R.
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GINNA NUCLEAR PLANT for ROCHESTER GAS
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ROCHESTER, NEW YORK April 24, 1981 Authorization:
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CD MARTINk, GRAF Diving P.O. Box 4V13
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Rochester, New Yora 14612 (716) 621-2021 Dayle O. Martin Richard C. Graf April 30, 1981 Mr. Louis Boutwell Rochester Gas
& Electric Corp.
Ginna Nuclear Plant
- Ontario, New York
Dear Louie:
Enclosed is our report with photographs of the inspection conducted in the screen house on April 24th.
If you have any questions, please call us.
DOM/dim Enclosure Very truly yours, MARTIN & GRAF. DIVING g(~ c'/ 7/c~:~M~-
Dayle,O.
Martin
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CD MA TIN & GRAF Diving P.O. Box 4713
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Rochester, Neve Yore 14612 (716) 621-2021 Dayle O. Martin Richard C. Graf Mr. Louie Boutwell Rochester Gas
& Electric Corp.
OBJECTIVES:
l.
Inspection of the impeller blades and housings of the 90 inch recirculating pumps.
2.
Inspection of the up and downstream sides of the traveling screens.
3.
Inspection of the intake screens of the four service water pumps.
4.
Inspection of the intake screens of the diesel and electric fire pumps.
Photograph unusual as well as typical conditions.
OBSERVATIONS:
The impeller blades and housings of the two large 90 inch recirculating pump are in a similar or unchanged condition as found in the previous inspection.
No unusual conditions were
0 Pi
Mr. Louie Boutwell Rochester Gas 6 Electric Corp.
Page 2
The traveling screens were observed in normal condition.
The floor area on the upstream side of the screens was generally very clean except for a couple pieces of cinder blocks and a few scattered pieces of screen material near screens B and C.
The largest piece of screen material was rolled up to about an 18 inch diameter roll and was in front of screen B.
See photographs 7, 8.
The diver also inspected the floor area over to and around the intake shaft.
No unusual conditions were observed.
The downstream side of the screens was found to have a four to six inch accumulation of silt next to the screens, which tapered off to zero about four feet away.
No debris was observed on this side o'f the screens.
Screen A has a seaweed build-up on the lower panel but the other screens (B, C, D) were much cleaner.
The red plastic hoses near screens B and D are unchan-Service Water Pum Screens Intake screen A was found to be about 75% covered with dead fish and small debris.
The bottom.tab was pulled in somewhat.
See photographs 13, 14.
Intake screen B was only covered about 25% with dead fish and most of it on the bottom.
The bottom tab was only pulled up slightly.
See photograph 15.
I
Mr. Louie Boutwell Rochester Gas
& Electric Corp.
Page 3
Intake screen C was found almost entirely clean.
See photograph 16.
Intake screen D was covered about 65% with dead fish and debris.
The bottom of it was totally blocked.
See photographs 17, 18.
The two fire pump screens were covered about 25% with seaweed material.
Both were physically secure.
Hard packed silt was found in the service water pump bay ranging from about three feet deep near the opening to the circulating water pump bay to several inches under. the pump intake screens.
Other areas ranged between these
- depths, but generally about one to two feet deep.
No other unusual conditions were observed.
INDEX OF PHOTOGRAPHS Photo I
~Sub 'ect Impeller blade next to bell Pump A
Edge of blade next to bell Pump A
Impeller blade and side of housing Pump A
Impeller blade Pump B
Impeller blade and side of housing Pump B
Outside of housing Pump B
7 Section of rolled up screen, upstream side of B screen
rt H
Mr. Louie Boutwell Rochester Gas
& Electric Corp.
Page 4
Photo 10
~Sub 'ect Side of D screen, upstream side Red tubing near A screen, downstream side Lower part of B screen with seaweed, down-stream side 12 Red tubing attached to ladder rung, downstream side 13 14 Side of screen A
Bottom of screen A
15 16 17 18 Side of screen B
Side of screen C
Side of screen D
,Bottom of screen D
Respectfully submitted, MARTIN & GRAF DIVING Dayle O. Martin