ML17256A736
| ML17256A736 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 05/26/1983 |
| From: | Maier J ROCHESTER GAS & ELECTRIC CORP. |
| To: | Crutchfield D Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0821, RTR-NUREG-821, TASK-03-03.C, TASK-3-3.C, TASK-RR NUDOCS 8306060036 | |
| Download: ML17256A736 (6) | |
Text
REGULATORY FORMATION DISTRIBUTION SY M (RIDS)
AGGRESSION NBR:8306060036 DOC ~ DATE: 83/05/29 NOTARI'ZED:
NO DOCKET FAOIL:50-204 Rober,t Emmet Gi'nna Nuclear -PlantF Unit li Rochester G
05000204 AUTH BYNAME AUTHOR AFFILIATION MAIERFJ ~ E ~
Rochester Gas 8.Electric Corp'BC IP ~ NAME RECIPIENT AFFILIATION QRUTCHFIELDFD ~
Operating Reactors Branch 5
SUBJECT:
Specifies provisions incorporated into,procedures re NRC positions for SEP Topic III<<3,CF."Inservice Insp of Hater-Control Structure.,"
Topic detailed 'in, final integrated plant SAR<NUREG 0821, DISTRIBUTI N CODE:
A035S;COPIES RECEIVED:LTR ENCL SIZE:,
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TITLE:
OR Submittal:
SEP Topic NOTES;NRR/DL/SEP icy, 05000240 RECIPIENT ID CODE/NAME NRR ORB5 BC 01 INTERNAL: NRR/DL/DRAB ii NRR/DSI/AEB NRR/DSI/CSB 07 RGNi COPIES LTTR ENCL RECIPIENT ID CODE/NAME NRR/DL/SEPB 12 N
ASB G FIL 00
'COPIES LTTR ENCL 3
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,NOTES:
10 02 LPDR NTIS 03-5
- TOTAL NUMBER OF COPIES REQUIRED
LTTR 22 ENCL
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//II/////////
ZZ,'OCHESTER GAS AND ELECTRIC CORPORATION
~ 89 EAST AVENUE, ROCHESTER, N.Y. 14649 JOHN E. MAILER Vlcc President TELEPHONE AREA coDE 7le 546 2700 May 26, 1983 Director of Nuclear Reactor Regulation Attention:
Mr. Dennis M. Crutchfield, Chief Operating Reactors Branch No.
5 U.S. Nuclear Regulatory Commission Washington, D.C.
20555
Subject:
SEP Topic III-3.C, Inservice Inspection of Watex-
-Control Structures R.
E. Ginna Nuclear Power Plant Docket No. 50-244
Dear Mr. Crutchfield:
The purpose of this lettex is to specify the provisions RGSIE has incorporated into the Ginna Station procedures, relative to the NRC positions for this topic as detailed in the Final Inte-grated Plant Safety Assessment
- Report, NUREG-0821, December 1982.
(1)
The present inservice inspection program at Ginna has been formalized by implementation of Maintenance Procedure
- M92, entitled "Underwater Inspection of Mechanical Equipment and Structures in the Screenhouse."
This procedure provides guidance for inspection by divers of the mechanical
- screens, pump inlets,. structures housing the pump inlets, and forebay from the intake shaft to the screens.
The divers will check for conditions such as cracking, erosion, obstructions,
- heaving, and other detexioration or degradation.
(2)
Our present program requires that the traveling screens be ovexhauled on a five-year cycle (approximately one per year).
This is specified in Procedure A-1010 entitled "Mechanical Preventive Maintenance Program."
8306060036 830526 PDR ADOCN, 05000244 Q
'DR I
(3)
A new procedure, M92.1, "Undex'water Inspection and Maintenance of the Intake Tunnel Structure and Shaft" has been implemented.
The inspection will rate the condition of concrete structures and surfaces, and check fox cracking, erosion, obstructions,
- heaving, and other deterioration, as well as the position, anchorage, and condition of the intake heater cabling.
Because of the difficulty and danger of these inspections, it is planned that they be performed on a 10-year basis, unless conditions warrant otherwise (see for example (7) below).
< t)
t
ROCHESTER GAS AND ELECTRI ORP.
DATE May 26, 1983 Mr. Dennis M. Crutchfield SHEET NO.
(4)
A new procedure, M92.2, "Inservice Inspection of Miscellaneous Water Control Structures at Ginna" is being implemented to provide for periodic inspection of the discharge
- canal, revetment, and service water redundant xeturn outlet structure.
The discharge canal and outlet structure will be inspected on an annual basis, for conditions such as cracking, erosion, obstxuctions, and other deterioration.
The revetment will be inspected for damage due to movement or change in elevation of the armor stone.
(5)
The results of all inservice inspection reviews will be reviewed by the Structural Engineering Group.
(6)
A special file will be developed for the inservice inspection reports for water control structures.
This file will include all presently available applicable engineering
- drawings, photographs, and specifications.
The file will also include previous inspection repoxts, as well as all futuxe reports, photographs, and record of modifications.
(7)
Additional inspections will be pexformed aftex'xtreme events such as floods ox seiches which are judged to jeopardize the integrity of the water control structures.
RG6E believes the above program corresponds to the commit-ments provided in our letters of Octobex'2, 1981 and January 15,
- 1982, "SEP Topics III-3.C, Inservice Inspection of Water Control Structure", April 5, 1982 "SEP Topic Reviews",
and AUgust 25, 1982, "Draft NUREG-0821".
As previously committed, this program will be implemented during the 1983 refueling outage.
Very truly yours, J hn E. Maier
C
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