ML20198H905

Errata to Amends 173 & 165 to License NPF-35 & NPF-52.TS Was Inadvertently Omitted & Should Have Been Transferred to New Page 3.3.1-19

ML20198H905
Person / Time
Site:	Catawba
Issue date:	09/30/1998
From:	NRC (Affiliation Not Assigned)
To:
Shared Package
ML20198H862	List: ML20198H858 ML20198H905
References
NUDOCS 9812300052
Download: ML20198H905 (1)

Text

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RTS Instrum:ntation 3.3.1 Table 3.3.1-1 (page 6 of 7)

Reactor Trip System Instrumentation (iii) for each percent Al that the magnitude of qi- go is more positive than the f i(AI) " positive" breakpoint presented in the COLR, the AT

' Trip Setpoint shall be automatically reduced by the f5(AI) " positive" slope prest.nted in the COLR.

J Note 2: Overpower AT The Overpower AT Function Allowable Value shall not exceed the following Trip Setpoint by more than 3% (Unit 1) 3.3% (Unit 2) of RTP.

A T (' * ") ' ' '

s ATo . T - K. T - T' - f, ( AI)

(1 + r, s) ,1 + r3 s , ,

Ks - Ks r+h 1 #

r S,1+r.s, 1+r.s Where: AT is the measured RCS AT by loop narrow range RTDs, "F.

ATo is the indicated AT at RTP, "F.

s is the La ace transform operator, sec".

T,is the measured RCS average temperature, *F.

T is the nominal T., at RTP (calibration temperature for AT instrumentation),

s 585.1*F (Unit 1) s 590.8*F (Unit 2).

K4 = Overpower AT reactor trip setpoint as presented in the COLR, Ks = 0.02/ F for increasing average temperature and 0 for decreasing average temperature, Ke = Overpower AT reactor, trip heatup setpoint penalty coefficient as presented in the COLR for T > T and Ke = 0 for T s T ,

ti, t, = Time constants utilized in the lead-lag compensator for AT, as presented in the COLR, t3 = Time constant utilized in the lag compensator for AT, as presented in the COLR, T. = Time constant utilized in the measured T., lag compensator, as presented in the COLR, t, = Time constant utilized in the rate-lag controller for T,y, as presented in the COLR, and f(AI) 2 = a function of the indicated difference between top and bottom detectors of the power range neutron ion chambers; with gains to be selected based on measured instrument response during plant startup tests such that:

(i) for qi - go between the " positive" and " negative" f2 (AI) breakpoints as presented in the COLR; f2(Al) = 0, where qi and go are percent RATED THERMAL POWER in the top and bottom halves of the core respectively, and gi + go is total THERMA 1. POWER in percent of RATED THERMAL POWER; 9812300052 901222 A 3 (continued)

Catawba Unas 1 and 2 3.3.1-19 Amendment Nos.173/165

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