ML19322C298

Submits Recommended Procedure for Terminating HPI Following Loca.At X Minutes Following Initiation of Hpi,Termination Allowed,Provided Hot Leg Temp Indication Plus Appropriate Instrument Error More than 50 F Below Saturation Temp

ML19322C298
Person / Time
Site:	Crane
Issue date:	02/16/1978
From:	Dunn B BABCOCK & WILCOX CO.
To:	Taylor J BABCOCK & WILCOX CO.
References
TASK-TF, TASK-TMR NUDOCS 8001160821
Download: ML19322C298 (1)

Text

~

u BABCOCK & 'dlLCOX COM. ANY

_ _ _,,..,...,,..., ~ g:.n 33: cs

.. __d.

GEncoATION GROUP to s--...9 r. :.

~*

If A0 ]_

.....:.2^

y qq -

~.

. &,/.

Ji= Taylor, Y.an:ger. Licensing

]("*,e-

~._.._.__ _ _ _ -

m M6MO 3ert M. Dunn, Yanager", ECCS Analysis (2138),g p g i ' 3q g ios m.5 File No.

or Ref.

t.

IDate J.

f Fe b J y 16, 198 Operator Interruption of Eigh ?ressure Injection

.i In. review of

.y' earlier meno cn this subject, dated Februa n 9, 5:rvice has Ie'co== ended the fellowint Procedure : for ter=- a,- s r

injection following a LOCA.

,.l C-f.

Low pressure injeition has been actuated and 'is floving ag a rate in ex,-

1.

as cess of the high pressure injection capability and that situation Sa=e as prev,iously _ a e been stable for a period of ti=e (10 =inutes).

2. " /.t I cirutes follovi:S the initiation of high pressure injection, _ terzina-tien is alleved provided. the hot leg stecperature indication p us approp..._

ate instrument.e:ror is more than 50 F below, the saturation te=pera are OY

~ corresponding to the reactor coolant syste= pressure less :.nstru-e. -

_ o _-.

. on

~

X is a ti e lag to prevent theteminationofthehighpressure32) 2.==ediatelv following its initiation.

It requires :urther verk uo

-n its specific value, bu: it is probable that 10 cinutes vill be ac,ecuate.

The need fer the delay is that no=al operating conditions..re v:..h:.n the above criteria and thus it is conceivable that the hig.. pressure ~..

jcetion vould be terminated during the initial phase of a scal. LCCA.

the standpoint of p!'entigg a6

I find that'this sche =e.is acceptableLfro:

verse long range problecs and is casier to i=;'le=ent..Therefore, I

,sh to

=emo to the one ident -.e n

modify the procedure requested in =y firs 7

cc:

E.W. Swanson D.H. Roy 3.A. Karrasch

~

E.A. Bailey ry.

J. Kelly

~

E.R. Tane J.D. Agar R.L. Pitt:an

• ~ ~

J.D. Phinny T. Scott

t..&

mrn i

10 0 0 r 6

b uj u

Lb 8001160}

[

[

_.____.-.-...wFA1P

^