ML20116C336

Proposed Tech Specs Table 3.3-3, ESFAS Instrumentation, Item 6.b, Refueling Water Storage Tank-Low

ML20116C336
Person / Time
Site:	Millstone
Issue date:	10/28/1992
From:	NORTHEAST NUCLEAR ENERGY CO.
To:
Shared Package
ML20116C335	List: B14267, Application for Amend to License DPR-65,revising TS Table 3.3-3, ESFAS Instrumentation, Item 6.b, Refueling Water Storage Tank-Low, as Result of Sump Recirculation Actuation Signal Logic Design Mods Being Implemented ML20116C336
References
NUDOCS 9211030329
Download: ML20116C336 (4)

Text

. i DnktL!A._5E3M RL4MZ Attachment 1 Millstone Nuclear Power Station, Unit No. 2 Proposed Revision to Technical Specifications Engineered Safety feature Actuation System Instrumentation Proposed Revised Pages October 1992 9211030329 921000 PDR ADDCK 05000336 P PDH

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. :r TA3tE 3.3-3 (Continued)

• ~

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" [2 ENGINEERED SAFETY FEATURE ACTUATION SYSTEM INSTRUMENTATION

$ MINIMUM "l

TOTAL NO. CHANNELS CHANNELS APPLICABLE OF CHANNELS TO TRIP OPERABLE MODES ACTION c: FUNCTIONAL UNIT 3*

4. MAIN STEAM LINE

" ISOLATION Steam Generator Pressure - Low 4 2 3 ,2,3(c) 2

5. ENCLOSURE BUILDING FILTRATION (EBFAS)

Manual EBFAS (Trip 2 1 2 I, 2, 3, 4 I a.

g Buttons)

Manual SIAS (Trip 2  ? 1, 2, 3, 4 1 i' b. 1 t; Buttons)

c. Containment Pressure- 2 4 2 3 1, 2, 3 High

d. Pressurizer Pressure- 1,2,3(a) 2 4 2 3 Low

6. CONTAINMENT SUMP RECIRCULATION (SRAS)

a. Manual SRAS (Trip 2 1 2 1, 2, 3, 4 1 Buttons) r -

b. Refueling Water Storage 4 Tank - Low 4 2(f) 4 1, 2, 3 l

~ .

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TABLE 3.3-3-(Continued)

TABLE NOTATION (a) Trip function may be bypassed when pressurizer pressure is < 1750 psia; ,

bypass shall be automatically removed when pressurizer pressure is 2 1750 psia.

(b) An SIAS signal is first necessary to enable CSAS logic.

(c) Trip function may be bypassed below 600 psia; bypass shall be automatically removed at or above 600 psia.

(d) Each channel has two sensors, high radiation level on either sensor will initiate containment purge valve isolation.

(e) Trip may be bypassed during testing pursuant to Special Test Exception t 3.10.3.

(f) The logic combinations of A/C and B/D do not provide a SRAS trip condition. ,

ACTION STATEMENTS ACTION 1 - With the number of OPERABLE channels one less than the Total Number of Channels, restore the-inoperable channel to OPERABLE status within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or be in COLD SHUTDOWN within the next 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />.

ACTION 2 - With the number of OPERABLE channels one less than the Tohil Number of Channels and with the pressurizer pressure:

a. < 1750 psia; immediately place the inoperable channel in the bypassed condition; restore the inoperable channel to OPERABLE status prior to increasing the pressurizer pressure above 1750 psia.

b. 2 1750 psia, operation may continue with the inoperable channel in the bypassed condition, provided the following conditions are satisfied:

l

1. All functional units receiving an input from the bypassed channel are also placed in the bypassed _ condition.

2. The Minimum Channels OPERABLE requirement is met; however, one additional channel may be removed from service for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> for surveillance testing per Specification-4.3.2.1 provided one of the inoperable channels is placed in the tripped condition.

L MILLSTONE - UNIT 2 3/4 3-16 0074

4 len.E 3.3-3 (Continued)

ACTION 3 - With one or more channels inoperable, operation may continue provided the containment purge valves are maintained closed.

ACTION 4 - With the number of OPERABLE channels one less than the Minimum Number of Channels, place the inoperable channel in the bypassed condition and restore the channel to OPEf%BLE status within 7 days or be in COLD SHUTDOWN within the next 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />. No other channels shall be removed from service for surveillance testing during this ACTION STATEMENT, MILLSTONE - UNIT 2- 3/4 3-17 0074

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