ML20212F929

Proposed Tech Specs,Permiting Installation & Operation of Mods Associated W/Second Level of Undervoltage Protection for Two 4,160-volt Emergency Electrical Buses

ML20212F929
Person / Time
Site:	FitzPatrick
Issue date:	12/31/1986
From:	POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK
To:
Shared Package
ML20212F908	List: ML20212F905 ML20212F913 ML20212F929 ML20212F942
References
NUDOCS 8701120216
Download: ML20212F929 (6)

Text

r ATTACHMENT I TO JPN-86 64 PROPOSED TECHNICAL SPECIFICATION CHANGES REGARDING A SECOND LEVEL OF UNDERVOLTAGE PROTECTION (PTS-81-019) 1 New York Power Authority JAMES A. FITZPATRICK NUCLEAR POWER PLANT Docket No. 50-333 DPR-59 11 p ,

P

JAFNPP 3.2 (cont'd) 4.2 (cont'd)

. 1 Drywell Leak Detection I E. Drywell Leak Detection E.

I The limiting conditions of operation for the Instrumentation shall be calibrated and checked . ]

instrumentation that monitors drywell leak as indicated in Table 4.2-5 detection are given in Table 3.2-5.

F. Surveillance Information Readouts F. Surveillance Information Readouts The limiting conditions for the instrumentation Instrumentation shall be calibrated and checked that provide (s) surveillance information readouts as indicated in Table 4.2-6 are given in Table 3.2-6 G. Recirculation Pump Trip G. Recirculation Pump Trip The limiting conditions for operation for the Instrumentation shall be functionally tested and instrumentation that trip (s) the recirculation calibrated as indicated in Table 4.2-7.

pumps as a means of limiting the consequences of a failure to scram during an anticipated tran- System logic shall be functionally tested as in-sient are given in Table 3.2-7. dicated in Table 4.2-7.

H. 4 kv Emergency Bus Undervoltage Trip The limiting conditions for operation for the instrumentation that prevents damage to electrical equipment or circuits as a result of either a degraded or loss-of-voltage condition on the emergency electrical buses are given in Table 3.2-2.

l l

i Amendment No.

54 7

~

t-JAFNPP

'3.2 BASES (cont'd) ,

The recirculation pump trip =has been added atLthe suggestion.of.ACRS as a means:of;; limiting the conse-' ,

quences of the.unlikely occurrence of_a failure to-t scram during an anticipated transient. .The< response of the plant to-this postulated event falls within the envelope of-study events given in. General;. 1 Electric Company Topical Report, NEDO-10349,x dated March, 1971.

The Emergency Bus UndervoltageL Trip System transferse the 4 kV emergency electrical' buses to the' Emergency-Diesel Generators.in'the' event an undervoltage-condition is detected. The-system has two-levels of protection: (1) degraded voltage protection, and:(2) loss-of-voltage protection. Degraded voltage protection prevents a sustained low voltage condition from damaging safety-related' equipment.. The loss-of-voltage protection prevents a more severe voltage drop from causing a long-term. interruption of power. Time delays are included in the system to prevent inadvertent transfers due to spurious voltage decreases. Therefore, both the duration and severity of the voltage drop are sensed by the' Emergency Bus Undervoltage Trip System.

Amendment No.

60 ,

u JAFNPP

' TABLE'3.2-2 (cont'd)

INSTRUMENTATION THAT INITIATES OR CONTROLS THE CORE AND CONTAINMENT '

COOLING SYSTEMS Total Minimum No.

Number of Instru-of Operable Instrument . ment Channels Pro-vided by Design for Item Channels Per .

Remarks Trip Function Trip Level Setting Both Trip Systems No. Trip System (1)

1. Initiates 4kV Emergency 37 (1 per 4kV bus) 4kV Emergency Bus 108 j; 1.5 2 Inst. Channels Bus Undervoltage Degraded Undervoltage Relay secondary volts Voltage Timer.

(Degraded Voltage)

2. Notes 4 and 6.

4kV Emergency Bus 9.0 j; 1.0 sec. 2 Inst. Channels 1.~ Note 5.

38 (1 per 4kV bus)

Undervoltage Timer (Degraded Voltage) 2 Inst. Channels 1. Initiates 4kV Emergency 39 (1 per 4kV bus) 4kV Emergency Bus 85 j; 4.25 Bus Undervoltage Loss Undervoltage Relay secondary volts I of Voltage Timer.

(Loss of Voltage)

2. Notes 4 and 7.

(1 per 4kV bus) 4kV Emergency Bus 2.50 j; 0.05 sec. 2 Inst. Channels 1. Note 5.

40 Undervoltage Timer (Loss of Voltage) 4 Inst. Channels Permissive for closing re-41 2 -Reactor Low Pressure 285 to 335 psig circulation pump discharge valve.

Amendment No. Jd, fd 70c

'JAFNPP ,

TABLE 3.2-2-(Cont'd)

INSTRUMENTATION THAT INITIATES OR CONTROLS THE CORE AND CONTAINMENT COOLING SYSTEMS ,

NOTES FOT TABLE 3.2-2

1. Wheneve any ECCS subsystem is required by specification 3.5 to be operable, there shall be two operable trip systems. From and after the time it is found that the first column cannot be met for one of the trip systems, that trip system shall be placed in the tripped condition or the reactor shall be placed in the cold condition within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

2. " Deleted"

3. Refer to Technical Specification 3.5.A for limiting conditions'for operation, failure of one (1) instrument channel disables one (1) pump, f

4. Tripping of 2 out of 2 sensors is required for an undervoltage trip. With one operable sensor, operation may continue with the inoperable sensor in the tripped condition.

5. The 4kV Emergency Bus Undervoltage Timers (degraded voltage and loss-of-voltage) initiate the following: initiates the start of the Emergency Diesel-Generators; trips the normal / reserve tie

breakers and trips all 4kV motor breakers (in conj.inction with 75 percent Emergency Diesel-Generator

. voltages); initiates diesel-generator breaker closes permissive (in conjunction with 90 percent j Emergency Diesel-Generator voltages) and; initiates sequential starting of vital loads in conjunction with low-low-low reactor water level or high drywpil pressure.

6. A secondary voltage of 108' volts corresponds to approximately 90.8% of 4160 volts on the bus.

]

7. A secondary voltage of 85 volts corresponds to approximately 71.5% of 4160 volts on the bus, i

Amendment No.,N , k ,

71

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c W4Lwahd '

JAFNPP' TABLE 4.2-2 MINIMUM TES'T AND CALIBRATION FREQUENCY FOR CORE AND CONTAINMENT COOLING SYSTEMS Instrument Channel Instrumont Functional Test Calibration Frequency Instrument Check (4) 1)' Reactor Water Level (1)(5) (15) Once/ day 2a) Drywell Pressure (non-ATTS) (1) Once/3 months None 2b) Drywell Pressure (ATTS) (1)(5) (15) Once/ day.

3a) Reactor Pressure (non-ATTS) (1) Once/3 months None 3b) Reactor Pressure (ATTS) (1)(5) (15) Once/ day

4) Auto Sequencing Timers None Once/ operating cycle None

5) ADS - LPCI or CS Pump Disch. (1) Once/3 months None

6) Trip System Bus Power Monitors (1) None None

8) Core Spray Sparger d/p (1) Once/3 months Once/ day.

9) Steam Line High Flow (HPCI & RCIC) -(l)(5) (15) Once/ day

10) Steam Line/ Area High Temp. (HPCI & RCIC) (1)(5) (15) Once/ day

12) HPCI & RCIC Steam Line Low Pressure (1)(5) (15) Once/ day

13) HPCI L RCIC Suction Source Levels (1) Once/3 months None 14a) 4KV Emergency Bus Under-Voltage Once/ operating cycle Once/ operating cycle None (Loss-of-Voltage) Relays and Timers 14b) 4KV Emergency Bus Under-Voltage Once/ operating cycle Once/ operating cycle None (Degraded Voltage) Relays and Timers

15) HPCI E RCIC Exhaust Diaphragm (1) Once/3 months None Pressare High

17) LPCI/ Cross Connect Valve Position Once/ operating cycle None None NOTE: Sea listing of notes following Table 4.2-6 for the r.otes referred to herein.

Amendment No.IJ , SS, /3, p9 79