ML20148H404

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Change 97 to Tech Specs D.2 Re ECCS
ML20148H404
Person / Time
Site: Yankee Rowe
Issue date: 04/14/1972
From:
US ATOMIC ENERGY COMMISSION (AEC)
To:
Shared Package
ML20148H410 List:
References
NUDOCS 8011180302
Download: ML20148H404 (4)


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Qt ATTACHMENT A J

(M CitANCE No. 97 TO THE TECllNICAL SPECIFICATIONS ow bi:

LICENSE NO. DPR-3 I

3 (d.

s YANKEE ATOMIC ELECTRIC COMPANY

),1 7 _.

DOCKET NO. 50-29 1.

Replace Sections D.2.a. (3) and (4) with the following:

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"(3)

At all times when the reactor is at operating temperature except for low power physics testing, sufficient boric acid shall be present in the main coolant system such J

that the reactor is not less than 4.3% delt.a k/k subcritical E

with the highest worth control rod stuck in the fully with-P.

drawn position.

"(4)

Sufficient boric acid will be added to the main coolant systen prior to cold shutdown to maintain the cold core p

with all control rods inserted at least 5*/. delta k/k suberitical.

Except for low power physics testing, this will be done before the temperature of the main coolant k

syste-has been reduced to a point where full insertion I

of all control rods would no longer render the reactor 4.37, delta k/k suberitical with the highest worth control h

rod stuck in the fully withdrawn position."

y 2.

Replace Section D.2.b. (5) with the following:

"(5)

Whenever there is a sustained outage of one of the 115 kV k

p$

lines because of maintenance or fault condition, the reactor power level shall be reduced to a level consistent with three loop operation as defined in (2) above."

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3.

Replace Sec tions D.2.c. (1), (2) and (3) with the following:

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"(1)

At rated power, F"q, the nuclear heat flux hot channel factor, f*

for the hottest point in the hottest channel shall not exceed 2.74 for zircaloy clad assemblies and 3.11 for stainless steci clad assemblics.

This value shall be checked every 1000 I[

equivalent full power hours of operation utilizing data derived fro, core instrumentation, t

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Replace Section D.2.e. (3) and add new Sections D.2.e. (4) and (5)

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as follows:

"(3)

Automatic initiation of the safety injection system, pumps and "c,

valves, shall be set to operate at a main coolant pressure not

.ldt less than 1700 psig.

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"(4) The minimum nitrogen overpressure on the Low Pressure Safety Injection Accumulator shall be 410 psig, j

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"(5) The Safety Injection System shall be maintained in

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readiness to inject borated water into the reactor l

at all times when the main coolant prei,aure is l

1000 psig or higher."

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Replace Table I " Reactor Protection Set Points" with the attached f

revised Table I.

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