ML20213D737
| ML20213D737 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 11/07/1986 |
| From: | KANSAS GAS & ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML20213D700 | List: |
| References | |
| NUDOCS 8611120211 | |
| Download: ML20213D737 (3) | |
Text
.
~
a i
Mr. H. R. Denton November 7, 1986
- Attachment III to 10DIRC 86-210 Page 1 4
Proposed Technical Specifications and Bases 3/4.7.1.6 and B3/4.7.1.6 1
i.
f E
i 8611120211 861107 PDR ADOCK 05000482 P
PDR J
>4-u* ; Ar.
amie
,,,n. wash as s
Mr. H. R. Denton November 7, 1986 Attactanent III to IOGIRC 86-210 Page 2 PLAME SYSTEMS
!FFEAM (32NRRA'IrEt ATSN1RDRRRTC DST.T5P VALVES LTMTTThr: (YEE)TTTrN (F QPE5tATT(W 3.7.1.6 At least three steam generator atmospheric relief valves (ARV's) shall be OPERABLE.*
APPLICABILITY Modes 1, 2, and 3.
ACTICE:
a.
With one'of the required ARV's inoperable, within 30 days restore the ARV to OPERABLE status, or be in HOT STANDBY within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in HOT SHUTD0041 within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.
b.
With more than one of the required ARV's inoperable, within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> restore at least two of the required ARV's to OPERABLE status or be in HDT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in HDT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.
c.
'Ihe provisions of Specification 3.0.4 are not applicale.
SURVEILLANCE REnlIREMENTS 4.7.1.6 No additional requirements other than those required by Specification 4.0.5
'.)
, A-m..uaasa, ta,*Et
- we
J
'Mr. H. R. Denton Novenber 7, 1986 Attachment III to IG U RC 86-210 Page 3 i
PIANT SYSTDE nansst 3/4.7.1.6 9'ItaM asussuMYM AiW-unmic nRt.TEP VALVES
'1he operability of the main steamline atmospheric relief valves (ARV's) ensures that reactor decay heat can be dissipated to the atmosphere in the event of a steam generator tube rupture and loss of offsite power and that the Reactor Coolant System can be cooled down for Residual Heat Removal Systen operation.
The number of required ARV's assures that the subcooling can be achieved, consistent with the asstaptions used in the steam generator tube rupture analysis, to facilitate equalizing pressures between the Reactor Coolant System and the faulted steam generator.
For cooling the plant to RHR initiation conditions, only one ARV is required.
In this case, with three ARV's
- operable, if the single failure of one ARV occurs and another ARV is asstned to be associated with the faulted steam generator, one ARV remains available for required heat removal.
Each ARV is equipped with a manual block valve (in the auxiliary building) to provide a positive shutoff capability should an ARV develop leakage.
An ARV is considered operable if the block valve is closed solely because of leakage.
Closure of the block valves of all ARV's because of leakage does not endanger the reactor core; consistent with plant accident and transient analyses, decay heat can be dissipated with the main steemline safety valves or a block valve can be opened manually in the auxiliary building and the ARV can be used to control release of steam to the atmosphere.
For the steam j-generator tube rupture event, primary to secondary leakage can be i
teminated by depressurizing the Reactor Coolant System with the pressurizer power operated relief valves.
F a
4 M
y
. o.s*zn;,%
-A w kwas
- - -