ML20092K564

From kanterella
Jump to navigation Jump to search
Notes to TS Table 3.2-1 Re Temporary Bypass of RWCU Differential Flow Isolation Instrumentation When Sys Restoration,Testing or Maint Performed
ML20092K564
Person / Time
Site: Hatch Southern Nuclear icon.png
Issue date: 02/19/1992
From:
GEORGIA POWER CO.
To:
Shared Package
ML20092K562 List:
References
NUDOCS 9202250252
Download: ML20092K564 (2)


Text

. _ _ _ - _ _

,/

ENCLOSURE PLANT HATCH - UNIT 1 NRC DOCKET 50-321 OPERATING LICENSE DPR-57 REQUEST TO REVISE TECHNICAL SPECIFICATIONS; PROTECTIVE INSTRUMENTATION PAGE CHANGE INSTRUCTIONS The proposed change to the Plant Hatch Unit 1 Technical Specifications will be incorporated as follows:

Remove Pace Insert Paae 3.2-4 3.2-4 002957

(

HL-2058 E-1 9202250252 920219 PDR

  1. SOCK 05000321 i

P pop

%s.

Notes f or Table 3.2-1

r>

The coluen entitled "Ref. No." is only for convenience 50 that a one-to-one relationship can be established y

a.

between lines in Table 3.2-1 and items in Table 4.2-1.

at b.

primary containment integrity shall be maintaine1 at all times prior to withdrawing control rods for the purpose of' going critical, when the reactor is cr itical, or when the reactor water temperature is above jj 212*f and fuel is in the reactor vessel except while perf orming low-power physics tests at atmospheric pressure at power levels not to exceed 5 MWt, or p. rforming an inservice vessel hydrostatic or leakage

-4 test.

I When primary containment integrity is required, there shall be two operable or tripped trip systems for each function.

When performing inservice hydrostatic or leakage testing on the reactor vessel with the reactor coolant low temperature above 212*r reactor vessel water level instrumentation associated with the low (Level 2) trip requires two operable or tripped channels. The drywell pressure trip is not required because primary containment integrity is not required.

If the number of coerable channels cannot be met for one of the trip systems, the inoperable channel (s) c.

or the associated trip system siall be tripped. However, one trip signal channel of a trip system may be inoperable for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> during periods of required surveillance testing without tripping the channel or associated trip system, provided that the other remaining channel (s) monitoring that same parameter within that trip system is (are) operable.

The valves associated with each Group isolation are given'in Table 3.7-l.

I" d.

to Within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> prior to the planned start of the hydrogen injection test with the reactor power

=

e.

at greater than 20% rated power, the normal full-power radiation background level and associated trip setpoints may be changed based on a calculated value of the rade. tion level expected during the test, The background radiation level and associated trip setpoints may be adjusted during the test based on either calculations or measurements of actual radiation levels resulting f rei

{

hydrogen injection. The background radiation level shall be determined and associated trip setpoints shall be set within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of re-establishing normal radiation levels after completion of hydrogen injection and prior to establishing reactor power levels below 20% rated power.

f.

The high ditterential flow signal to the RWCU isolation valves may be bypassed for up to 2' hours during periods of system restoration, maintenance, or testing.

-sO vO us CD CL

-4 LA C$

w CD O

.O fu M

1.

cm t

C) s