ML19291B532

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Abnormal Occurrence 75-15:on 750605,Tech Specs Violated by Less Conservative High Reactor Coolant Sys Pressure Trip Setpoint.Caused by Calibr Drift
ML19291B532
Person / Time
Site: Crane 
Issue date: 06/05/1975
From: Herbein J
METROPOLITAN EDISON CO.
To:
Shared Package
ML19291B530 List:
References
NUDOCS 7911080562
Download: ML19291B532 (1)


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IT OFFICE *.C C'X 420 M;OCLETOWN.P2NN3YLVAMA 17CS7 TEL3P. MON E 717-C44./,041

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J. P. O'n ; illy, Direetce June S. 1975 Directerste c2 LTalatogt Cporaticr.3 Pa~'cn I bb

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o Operating Licence DP2-50 Dechet 50-?33

Subject:

9bnmal Cccurrence No. t.OK Daar !!c. 0% Illy:

This telegran *c to confirn the telecen betwocn Lee Sposaard (Region I-r:0),

anti J. J. Cc.11:n (T'!I Unit I Superintendent) at 1600 hotu's, June 5,19'15.

Vinittien of Technical Ep 'cificaticn 2.3.1 in that the hich reactor ecolant

a.. ;:.2 u. rennu o tri.e cernoint t'or cne ICS channel was four.1 to be Icas cena.e.'ative then the setnoint listed in Table 2.3.1 (Page 2-G) of the Tec%ical Up.:ci-fice.tlenc.

The reeg27 ed and act :n1 trip point for the channel out of c :ecifica=.cn was os follows:

Actual 'iini 7::venur 2 Tablo 2.3.1 Trip Point :~encrred Chernel Trio Set :cint at Prescuro :.J';

D 2055 2377 Tb.o 7 5cvo nc'hty sJute 2 eottin't v23 out cf s:; ecification cn a result of niner calibrctico drii-t c:::crience.d in 1che acacciated reacter ceolant c:;steca prec:.t e e.v.rs:11.tter.

Frc.'au; c tr _.s.Ctt:'r c' ration and corree.v: idhe n. resenre trip autpoint:

rcre '; air:.: e::ce.r.2 in e.3:crdance with Dal.:aling Ir.verva'. Sur tci.llcrc :: 0-c?~nr2 1?O2-5.2 G S.3, ".1 h ecid Lc t RC P-'ec=ure Channelc".

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cen..rtt syste.: - rectu:v t, in =ctpoints 9:are tested and Ionnd to be :: -31n Tec;.nl:21 Sp.cificatica 2.1.ite.

The cut-of-rweificatie-. t-cnsnitter h s beer recalilrated and retecte ?, nr.C the ; nultir-trip cetteints were verified cu Leic ; uithin Technical 2.cc '.

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