ML17252A852

Letter Regarding an Occurrence Where the Reactor Was Brought Critical Preparatory to Placing the Plant Back in Service Following Completion of Repairs Associated with the 11/13/1973 Feedwater Line Break Incident - Indian Point Unit No. 2

ML17252A852
Person / Time
Site:	Indian Point
Issue date:	01/31/1974
From:	Cobean W R Con Edison, Consolidated Edison Co of New York
To:	O'Reilly J P US Atomic Energy Commission (AEC)
References
Download: ML17252A852 (1)

Text

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• t * /. ,. -* . " . Rt:::

F*o.int Unit No. 2 Af.C-Dc.n::kt'!

l 50-24 7 Mr

• J arne s 'P

• Q 1* He i 11 y , Dire ctr) r Megion I u. S. l\tomic EntJ.rgy Cc)ff!l'i1)

ion 1 Park Fae i l i ty DI*'l\-26 A.0.-4-2-6 King of Prussia, 19406 *-** --On January 25, 1974 th0 reactor was hrou9ht Griti6al t.c1 pl ac in9 plant ba.ck in sc;.rvice fol 1-owing cc)mpl on* of re*

aesocdat.ed wi.t.h NO"JL-miber 13, 1973 fe1:.dwa.ter linl': brea:k incident.,

• "c:hieve.d with the 11C::" banl-'. of ct'>ntrr,1 rods 45 step:.; withdrm*m from

<::ore.*

Tl1e pc1eitions the control 27 steps below the t.ion Ii.mite ehown on P.ig,_1_t'.c':_

3.10-1 of the Tcc::hriicill tions. At time of the tho reactor coolant.

system and lempc:t**i1ture 2235 and resper.tively with l. fc.1u-T r(':actor ant in se;:ivj and the borc,n ccntra tion 112[i ppm boron. 27 scnt.e a in the rt-quired mi'\rg-;

n of

0. 2-6't, re:activi ty. Minimum boron c.-:oric.e:ntrat.1on req1.1.ire:d to the

$hutdown margin (Pi9ure 3, t0-3 of t.h0. 'l'echnit;al Speci..-f is i;-alcul.-,tc:-:d to be 77 Ci ppm.

1 the

• l\\lU'gin

<<t the timt! of the waF.

more that required by Figure J.l0a3, We tlre thG c.:::sut:t:s of this OGGux*rt!nce.

"nd corrl!lc':'t.ive action to prevent Mr.

• Ant.hcny no of your off ic-e w;is nutif ie-d r:.f this by telephone by Mr. John on 30, 1974. Very truly youts, (i{J£pi,,_

j, R.

Jr., Manager Nucleilr Genoration J . ;-... ** ! . . '*. . . L . --

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