ML20073M965
| ML20073M965 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 04/15/1983 |
| From: | Westafer G FLORIDA POWER CORP. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20073M968 | List: |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.F.2, TASK-TM 3F-0483-11, 3F-483-11, NUDOCS 8304220345 | |
| Download: ML20073M965 (2) | |
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Power CORPOnaf EON April 15,1983 3F-0483-11 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, DC 20555
Subject:
Crystal River Unit 3 Docket No. 50-302 Operating License No. DPR-72 NUREG-0737, Item II.F.2 Instrumentation for Detection of Inadequate Core Cooling
Dear Mr. Denton:
Florida Power Corporation (FPC) hereby provides a preliminary conceptual design of the Reactor Coolant Inventory Tracking System (RCITS) as stated in our letter to you dated March 22, 1983.
FPC will install a RCITS which conforms to the design parameters specified in NUREG-0737, Item II.F.2.
This was requested by the Nuclear Regulatory Comission (NRC) " Order for Modification of License" dated December 10, 1982. The RCITS technical description is provided in Attachments I and II.
The RCITS is similar to the Babcock & Wilcox concept.
This conceptual design is preliminary, and as FPC has previously stated in a letter to Mr. S.J. Chilk dated March 3, 1983, and in a meeting held at the NRC offices in Bethesda, MD on March 17, 1983, FPC has contracted Stone & Webster Engineering Corporation to fully evaluate all com-mercially available RCITS.
FPC is also evaluating the use of gamma thermometers as an ICC instrument based on the recent presentation made to the NRC on March 31, 1983. At the end of this study, FPC will choose the best RCITS for Crystal River Unit 3 and will commit to engineering, f
h procurement and installation schedules with a very high confidence q
level.
By July 18, 1983, FPC will have a conceptual system design and j
an overall schedule for engineering, procurement, and installation for an Inadequate Core Cooling instrumentation system that meets the " Order a
noo for Modification of License" requi rements.
Additional system infor-So' mation can be supplied to you by that date.
The NRC checklist for com-08 pliance with Item II.F.2 will be provided to you by August 26, 1983.
mn (Note that we will provide you with information on the status of con-n formance of the core-exit thermocouples and subcooling margin monitors with the requirements of NUREG-0737 Item II.F.2 by April 25, 1983, as oc stated in our letter to you dated March 22,1983.) FPC will require NRC EO approval to proceed with procurement and installation by September 15,
$g 1983, in order to meet our schedules.
1 General Office 3201 inirty-fourtn street soutn. P O Box 14042. St Petersburg. Fionda 33733 813-866-5151
L April 15,1983 3F-0483-11.
Page.2
- The preliminary schedule for engineering, procurement, and installation of ~
the. RCITS is for : installation to : be completed by our Refuel V which is
. scheduled to start Spring 1985.
FPC has a 50% confidence level.that the
. system can be completely installed - during Refuel
_V.
Delivery times. of '
equipment may impact;the installation of the system by. Refuel V.
Instal-lation off the system is expected = to be accomplished in. steps which would allow us to complete = parts. of ' the system during outage and non-outage times.
FPC has a 100% confidence level that the system.can be completely installed by Refuel VI.which~ is scheduled to start Fall 1986. FPC is pre-sently having problems with the ~ procurement of root valves., for the decay heat. drop line tap which is the bottom hot leg pressure tap. We expect to have this-installation completed during our present refueling outage. This tap requires a ' reactor defueling which will be accomplished during the cur-rent refueling outage.
However, if we cannot complete this installation our next -defueling is scheduled for our Refuel VI which is' our ten year in--
spection outage.
This agrees with our 100% confidence level of system installation by Refuel VI.
Sincerely, Y
. /
6f
.G.R. Westafer Manager
-Nuclear: Licensing and Fuel Management Attachments Rubio(T01)C2-1 PMR:
cc: Mr. J.P. O'Reilly, Regional Administrator.
Office of Inspection & Enforcement, Region'II U.S. Nuclear Regulatory Commission 101 Marietta Street NW, Suite 2900 -
~
Atlanta, GA 30303