ML20212M398

Proposed Tech Specs Re Table 3.3-1, Reactor Trip Sys Instrumentation, Action 19 of Table 3.3-3 & Protective & ESF Instrumentation Bases

ML20212M398
Person / Time
Site:	Trojan File:Portland General Electric icon.png
Issue date:	08/22/1986
From:	PORTLAND GENERAL ELECTRIC CO.
To:
Shared Package
ML20212M353	List: ML20212M351 ML20212M398
References
TAC-56816, NUDOCS 8608250476
Download: ML20212M398 (4)

Text

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TABLE 3.3-1 (Continued) own .y ..

Oo 5 - REACTOR TRIP SYSTEM INSTRUMENTATION 2# .

i MINIMUM

~ N.i! ~ TOTAL NO. CHANNELS CHANNELS APPLICABLE ,

om FUNCTIONAL UNIT OF CHANNELS TO TRIP OPERABLE MODES ACTION '

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'$8 18. Turbine Trip 3 ]l.,,!,j A. Low Hydraulic . Control 3 2 2 19 6#

L 011 Pressure B. Turbine Stop. Valve Closure 4-1/ valve 4-1/ valve 4-1/ valve 1 $. 78 l~

.19. Auto Safety Injection Input 2 1 2 1, 2 1,

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20. . Reactor Coolant Pump Breaker 4-1/ breaker. 2 1/ breaker 19 98 Position Trip' per oper-ating loop

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21. Reactor Trip Breakers 2 1 2 1, 2 l'

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oO 22. -Automatic Trip Log'ic~

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Attachment 1 .

Page 15 of 42 .

TABLE 3.3-1 -(Continued) -

- l M a ACTION 3 - With the number of channels OPERABLE one less than the Minimum Channels OPERABLE requirement a'nd with the THERMAL POWER level:

a. Below P-6, restore the inoperabli channel to OPERABLE status prior to increasing THERMAL POWER above the P-6 setpoint.

b. Above P-6, operation may continue, provided th'at THERMAL POWER is expeditiously placed within the range of the Soprce Range or Power Range. Instrumentation.

ACTION 4 - With the number of OPERABLE channels one less than the Mini-mum Channels OPERABLE requirement, suspend all operations involving positive reactivity changes. -

(- ACTION 5 - With the' number of channels OPERABLE one less than the Mini-mum Channels OPERABLE requirement, verify compliance with the SHUTDOWN MARGIN requirements of Specification 3.1.1.1 within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> thereafter.

ACTION 6 - With the number of OPERABLE channels one less than the Total Number of Channels, STARTUP and/or POWER OPERATION may pro

• ceed provided both of the following conditions are satisfied:

j a. The inoperable channel is placed in the tripped condition within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

b. The Minimum Channels OPERABLE requirement is met; how-ever, the inoperable channel may be bypassed for up to l 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> for surveillance testing of other channels per Specification 4.3.1.1.

ACTION 7 - With the number of OPERABLE . channels one less than the Total Number of Channels, place the inoperable channel in the l tripped condition'within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />. Operation may continue until performance of the next required CHANNEL FUNCTIONAL -

TEST.

ACTION. 8 - With a channel associated with an operating _ loop inoperable, restore the inoperable channel to OPERABLE status. within 2 -

. hours or be in at least HOT' STANDBY within.the ne' x t 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

One channel associated with an operating loop ma~y be bypassed for up to 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> for surveillance testing per Specification 4.3.1.1. .

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. TROJAN-UNIT 1 3/4-3-6 . Amendment No. 33, I

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. Attachment 1 Page 30 of 42 TABLE 3.3-3 (Continued)

ACTION STATEMENTS ACTION 19 - With the number of OPERABLE Channels one less than the Minimum Channels OPERABLE requirement, be in at least HOT SHUT 00WN within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. One channel may be bypassed 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 Specifi- l cation 4.3.2.1 provided the other channel is OPERABLE.

ACTION 20 - With the number of OPERABLE Channels one less than the Minimum Channels OPERABLE requirement, 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 declare the associa'ted valve inoperable and take the ACTION required by -

Specification 3.7.1.6.

ACTION 21 - With the number of OPERABLE Channels one less than the Total s f- Number of Channels, declare the associated auxiliary

, (- feedwater pump inoperable and apply the requirements of Specification 3.7.1.2. -

ENGINEERED SAFETY FEATURES INTERLOCKS DESIGNATION CONDITION AND SETPOINT FUNCTION P-11 With 2 of 3 pressurizer Prevents or defeats pressure channels > 1925 manual block of safety psig. injection actuation on low pressurizer pressure.

P-12 With 2 of 4 T avg channels Allows manual block of

< 553*F safety injection actua-tion on high steam line

( flow and low steam line pressure. Causes steam line isolation on high steam flow. Affects steam dump blocks.

P-4 With both reactor trip Allows manual block of breakers open. safety injection actua-tion. .Causes turbine trip. Closes feedwater-valves on low Tavg and prevents their reopening  ;

if closed by safety )

injection or high steam generator water level.

P-14 With 2 of 3 steam generator Causes turbine trip and level channels >75% of narrow trips both feedwater range instrument span. pumps. Closes feedwater ,

isolation, bypass, and t!

regulating valves.

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3/4 3 Amendment No. 47, h'" :

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. Attachment 1 Page 42a of 42 3/4.3 INSTRUMENTATION BASES 3/4.3.1 and 3/4.3.2 PROTECTIVE AND ENGINEERED SAFETY FEATURES (ESF)

INSTRUMENTATION The OPERABILITY of the protective and ESF instrumentation systems and interlocks ensure that 1) the associated ESF action and/or reactor trip will be initiated when the parameter monitored by each channel or combina-tion thereof exceeds its setpoint, 2) the specified coincidence logic is maintained, 3) sufficient redundaricy is maintained to permit a channel to be out of service for testing or maintenance consistent with maintaining ~

an appropriate level of reliability of the Reactor Protection and ESF instrumentation.

The OPERABILITY of these systems is required to provide the overall -

(( reliability, redundancy and diversity assumed available in the facility design for the protection and mitigation of accident and transient conditions. The integrated operation of each of these systems is consistent with the assumptions used in the accident analyses.

The surveillance requirements specified for these systems ensure that the overall system functional capability is maintained comparable to the original design standards. The periodic surveillance tests performed at the minimum frequencies are sufficient to demonstrate this capability.

Specified surveillance intervals and surveillance and maintenance outage times have been determined in accordance with WCAP-10271, " Evaluation of Surveillance Frequencies and Out of Service Times for the Reactor Protec-tion Instrumentation System", and supplements to that report as approved by the NRC and documented in the SER (letter to J. J. Sheppard from Cecil 0. Thomas dated February 21,1985).

The measurement of response time at the specified frequencies provides assurance that the protective and ESF action function associated with each channel is completed within the time limit assumed in the accident analyses. No credit was taken in the analyses for those channels with response times indicated as not applicable.

Response time may be demonstrated by any series of sequential, over-lapping or total channel test measurements provided that such tests demonstrate the total channel response time as defined. Sensor response time verfication may be demonstrated by either 1) in place, onsite or offsite test measurements o:- 2) utilizing replacement sensors with certified response times.

3/4.3.3 MONITORING INSTRUMENTATION 3/4.3.3.1 RADIATION MONITORING INSTRUMENTATION The OPERASILITY of the radiation monitoring channels ensures that

1) the radiation levels are continually measured in the areas served TROJAN-UN.IT 1 B 3/4 3-1

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