ML19309A657

Proposed Amend 51 to License DPR-54.Includes Tech Specs 4.1 Re Instrument Surveillance Requirements

ML19309A657
Person / Time
Site:	Rancho Seco
Issue date:	06/20/1978
From:	SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
Shared Package
ML19309A656	List: ML19309A655 ML19309A657
References
TAC-10968, NUDOCS 8003310565
Download: ML19309A657 (3)

Text

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TABLE 4.1-1 (Continued)

INSTRUMENT SURVEILLANCE REQUIREMENTS Channel Description Check Test Calibration Remarks 42.

Reactor Building drain NA NA R

accumulation tank level 43 Incore neutron detectors M(1)

NA NA (1) Check functioning, including functioning of computer readout and/or recorder-readout

,44.

Process and area radiation W

M Q

monitoring systems

-t 45 Emergency plant radiation p

instruments M(1)

NA R

(1) Battery check j j.

s M 46.

Envi ronmental. ai r moni tors M(1)

NA R

(1) Check functioning y g.

y W

47 Strong motion accelerometer Q(1)

NA R

(1) Battery check

• *^

48.

Nuclear Service Bus loss and undervoltage S

H R

Not requi red during cold shutdown l 51 3 ' E a'

2H z

S = Each Shi f t M = Monthly P = Prior to each startup i f not done previous week D = Daily Q = Quarterly R = Once during the refueling interval W = Weekly

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TABLE 3.5.1-1 (Concluded)

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INSTRUMENTS OPERATING CONDITIONS (A)

(B)

Functional Unit Minimum Operable Minimum Degree Operator Action if Conditions of Channels of Redundancy Colunos A and B Cannot be Het Sa fety Features

• 4.

R::ctor Building spray valve J

Reactor Building pres-a, 2

sure instrument channel i

Bring to hot shutdown

-4 within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> g

b.

Manual pushbut ton z

2 1

f5 Bring to hot shutdown ci z within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> pg Process instrumentation

,o mm

).

Pressurizer Level 55 2

N.A.

Bring to hot shutdown

-c 2.

Loss of Power within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> gz

_-4 -i 4.16 KV Nuclear Service Bus E~

2/ Bus 1/ Bus Undervoltage (Loss or degraded Wi th the number of OPERABLE Channels /Eb!

w voltage) one less than the Total Number of Channels, operation may proceed until 51 performance of the next required CHANNEL FUNCTIONAL TEST provided the inoperable channel is placed in the l{

tripped condition within i Scur t)

)

I

• l f minimum conditions are not net within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> af ter hot shutdown a cold shutdown condition within an additional 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

, the unit shall be placed in o n r-

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RANCHO SECO UNIT 1 TECHNICAL SPECIFICATIONS Limi ting Condi tions for Operation 353 SAFETY FEATURES ACTUATION SYSTEM SETPOINTS

-Applicability This specification applies to the safety features actuation system actuation setpoints.

Objective To provide for automatic-initiation of the safety features actuation system in the event of a breach of reactor coolant system integrity.

Speci fica tion The safety features actuation setpoints and permissible bypasses shall be as follows:

Functional Unit-Action Setpoint High Reactor Building Reactor Building spray val *ve**s

- 30 psig pressure

• 33, Reactor Building spray pumps 5

30 psig High pressure injection and start of Reactor Building cooling and Reactor Building isolation 5 4 psig Low Pressure injection 5 4 psig-Low reactor coolant High pressure injection and system pressure **

start of Reactor Building cooling and Reactor Building isolation 31600 psig Low pressure injection 2 1600 psig Loss of Power Nuclear -

Start Diesel Generator 3536 volts Service Bus loss or 36 vol ts 51 degraded voltage

• May be bypassed during Rcactor Building leak rate test.

• • May be bypassed b;iow 1850 psig'and is automatically reinstated above 1850 psig.

• • • Five minute time delay.

• • • • 2 75_ 0.25 second time delay.

l51

_B as es -

Hight Reactor Building Pressure 1The-basis 'for the 30 psig -and 4 psig setpoints for the high pressure signal is:

to establish a> setting which would be reached in adequate time in the event of 3-34 Proposed Amendment No. 51