ML20137B116
| ML20137B116 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 01/07/1986 |
| From: | Tucker H DUKE POWER CO. |
| To: | Harold Denton, Youngblood B Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8601150101 | |
| Download: ML20137B116 (3) | |
Text
f a.,- -a DUKE POWER GOMPANY P.O. BOX 33*89 CHARLOTTE, N.O. 289.42 HALB. TUCKER TE R.EPIION E vua ramminewr (704) 373-4531 wims.aan newsom January 7, 1986 Mr. Harold R.
Denton, Director Office of Nuclear Reactor Regulation U.
S. Nuclear Regulatory Commission Washington, D. C.
20555 Attention:
Mr.
B.
J.
Youngblood, Project Director PWR Project Directorate No. 4
Subject:
Catawba Nuclear Station Docket Nos. 50-413 and 50-414
Dear Sir:
By letter dated September 10, 1985 and supplemented by letter dated November 27, 1985, Duke. proposed an amendment to the Technical Specification for reactor trip setpoint on lo-lo steam, generator water level for Catawba Unit 1.
In addition to the setpoint change, it was noted that a filter would be added to the channel circuitry.
Both changes are intended to help prevent unnecessary reactor trips as a result of load rejections.
As a result of followup' discussions with the Staff, Duke was requested to add a footnote to an appropriate Technical Specification to reflect the addition of the filter and its associated time content.
Therefore, attached is a revised Table 2.2-1, page 2-5 which includes the requested footnote.
This letter contains information which supplements that which was provided by my letters of September 10 and November 27, 1985.
As such no additional license fees are necessary.
Very truly yours, kh Q8J Hal B. Tucker ROS:slb 1
Attachment I
AD - J. HIGHT (ltr only)
EB (BALLARD) 8601150101 960107 gi)D'*EICSB (ROSA)
PSS (GAMMILL)
PDR ADOCK 05000413 RSS (BERLINGER)
P PDR
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.Mr.' Harold R.-Dsnton,. Director January.7, 1986 Page 2,
'cc:
Dr.
J.. Nelson. Grace, Regional Administrator U..S.
Nuclear' Regulatory Commission Region'II
.101 Marietta Street, NW,~ Suite 2900
~
Atlanta, Georgia' 30323 NRC Resident Inspector Catawba Nuclear Station
~
Dr. K. N. Jabbour Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington,;D. C.
--20555 Mr. Heyward Shealy, Chief Bureau of Radiological Health South' Carolina' Department of Health &
Environmental Control 2'600 Bull Street
~
Columbia, South Carolina 29201
L g.
TABLE 2.2-1 (Continued) 51 REACTOR TRIP SYSTEM INSTRtmENTATION TRIP SETPOINTS 6
TOTAL SENSOR ALLOWANCE ERROR E
FUNCTIONAL UNIT (TA)
Z (S)
TRIP SETPOINT ALLOWABLE VALUE G
vi
- 13. Steam Generator Water H
i g
a.
Unit 1 17 14.2
- 1. 5
>17% of spanVP
>15.3% of span from N o
Level Low-Low Yrom 0% to 30%
DX to 30% RTP*
1 m
l RTP" increasing hincreasing linearly linearly to f(o >
l p*p h of span of span rom 30% to 100% RTP*
Trom 30% to 100%
3 g,3 RTP*
i b.
Unit 2 17 14.2 1.'5 117% of narrow 115.3% of narrow N i
y range span range span 1
ui i
- 14. Undervoltage - Reactor 8.57 0
1.0
>77% of bus
>76% (5016 vol,ts)
Coolant Pumps voltage (5082 volts) with a 0.7s response time.
15.
Underfrequency - Reactor 4.0 0
- 1. 0
>56.4 Hz with a
'>55.9 Hz Coolant Pumps D.2s response time -
16.
Turbine Trip a.
Low Control Valve EH,
N.A.
N.A.
N.A.
>550 psig 1500 psig j
Pressure o
b.
Turbine Stop Valve N.A.
N.A.
N.A.
11% open 11% open e.
Closure g
- 17. Safety Injection Input N.A.
N.A.
N.A.
N.A.
N.A.
h
-e from ESF
,- N yM&A W "RTP = RATED THERNAL POWER l
u w xw M' Yw wAw w w a # n s u w n f w 's - y -
1