ML20059C355

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Proposed Tech Spec 3/4.3.8, Turbine Overspeed Protection Sys
ML20059C355
Person / Time
Site: Fermi DTE Energy icon.png
Issue date: 08/17/1990
From:
DETROIT EDISON CO.
To:
Shared Package
ML20059C352 List:
References
NUDOCS 9008310211
Download: ML20059C355 (4)
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8'igTING CONDITIONS FOR OPERATION AND SURVEILLANCE REQUIREMENTS

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. jit. 3 NS?*'3*E*'T;.Q0N 3/4.3.1- REACTOR PROTECTION SYSTEM INSTRUMENTATION............ 3/4 3-1 3/4.3.2 ISOLATION ACTUATION INSTRUMENTATION.................. 3/4 3-9 3/4.3.3 EMERGENC/ CORE COOLING SYSTEM ACTUATION INSTRUMENTATION...................................... 3/4 3-23 3/4.3.4 ATWS RECIRCULATION. PUMP TRIP SYSTEM ACTUATION INSTRUMENTATION.................. ................... 3/4 3-32 l

3/4.3.5 -REACTOR CORE lSOLATION-COOLING SYSTEM ACTUATION INST RUMENT AT ION . . . . . . . . . . . . . . . . . i . . . . . . . . . . . . . . . . . . . . ' 3/4 3- 36 3/4.3.6 CONTROLE R00 BLOCK INSTRUMENTATION. . . . . . . . . . . . . . . . . . . . 3/4 3-41 3/4.3.7 : MONITORING INSTRUMENTATION

' Radiation Monitoring Instrumentation. . . . . . . . . . . . . . . . . 3/4 3 I Seismic' Monitoring Instrumentation................... 3/4 3-51 Meteorological Monitor

  • ng Instrumentation. . . . . . . . . . . . 3/4 3-54 Remote. Shutdown System Instrumentation and Controls.. 3/4 3-57 Accident-Monitoring Instrumentation.................. 3/4 3-60 50urce' Range Monitors................................. 3/4 3-64 Traversing in-Core Probe System...................... 3/4 3-65

. Chlorine Detection System............................ 3/4 3-66 Fire Detection Instrumentation....................... 3/4 3-67 Loose-Part Detection System.......................... 3/4 3-70 Radioactive Liquid Effluent Monitoring Instrumentation......................................

S/4 3-71 Radioactive Gaseous Effluent Monitoring Instrumentation......................................

3/4 3-76 3/4.3.8 TU=:= 0" =r=0 r"0T::T:0" Y ':". . . . . . . . . . . . . . 3/' 3-95 DELET'ED 3/4.3.9 FEEDWATER/ MAIN TURBINE TRIP SYSTEM ACTUATION INSTRUMENTATION....................................... 3/4 3-86 V

FERMI - UNIT 2- i

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. lifdR! f.Fil INSTRUMENTATION (Continued) ,

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} - 9CNITORING INSTRUMENTATION (Continued)

I Meteorological Monitoring Instrumentation... .... 8 3/4 3-4 Remote Shutdown System Instrumentation and

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Controls........................................ 8 3/4 3-4

  • Accident Monitoring Instrumentation............. 8 3/4 3-4 Source Range Monitors........................... B 3/4 3-4 I Traversing In-Core Probe System. . . . . . . . . . . . . . . . . 8 3/4 3-4  ;

I Chlorine Detection System....................... 8 3/4 3-5 Fi re Detection Instrumentation. . . . . . . . . . . . . . . . . . 8 3/4 3-5

' Loose-Part Detection System..................... 8 3/4 3-5 .

Radioactive Liquid Effluent Monitoring Instrumentation................................. 8 3/4 3-5 Radioactive Gaseous Effluent Monitoring '

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- Instrumentation................................. 8 3/4'3-6 i

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.(' / :-: DELETTED 3/4.3.8 T=::"! 0":e!?:50 ?"ai::T:0" :Y:T:" ......

QN 3/4.3.9 FEEDWATER/ MAIN TUR81NE TRIP SYSTea - ' ' ' .

8 3/4 3-6 INSTRUMENTATION.................. .. ..... l

[, ~3/4'.4 REACTORC0blANTSYSTE

'3/4.4.1 -RECIRCULATION SYSTEM............................

~8 3/4 41 ,

J 3/4.4.2 SAFETY / RELIEF VALVES............................ 8 3/4 41 ,

l 3/4.4.3 REACTOR COOLANT SYSTEM LEAKAGE Leakage Detection Systems....................... 8 3/4 4-2 Oparational Leakage............................. 8 3/4 4-2 .

1 8 3/4 4-1 3/4.4.4 CHEMISTRY....................................... ,

A 8 3/4 4-3 j 3/4.4.5 SPECIFIC ACTIVITY...............................

8 3/4 4-4 3/4.4.6 PRES $URE/ TEMPERATURE L1MITS.....................

VALVES................ B 3/4 4-5 )

3/4.4.7 MAIN STEAM LINE ISOLATION i

INTEGRITY............................ B 3/4 4-5 l 3/4.4.8 STRUCTURAL ,

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x 3/4.4.9 RESIDUAL HEAT REM 0 VAL........................... 8 3/4 4-5 xiii FERMI - UNIT 2

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pgLETED INSTRINNTATION 3/L18 TURINE OVERSPIED PROTECTION $YSTEM LIMITING CONDITION FOR OPERATION .

.8 At least one turbine overspeed protecti system shall be.0PERABLE.

APPL ABILITY: OPERATIONAL CONDITIONS 1 and 2.

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s. ith one turbine control valve, or one turbi top valve per high I ssure turbine steam lead inoperable and/or w h one turbine low  !

p sure stop valve or intercept valve per low p sure turbine ste lead inoperable, restore the inoperable valve )toOPERABLE status ithin 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or close at least one valve n he affected  ;

eteam 1 d(s) er isolate the turbine free the steam sup ly within '

the next hours.

b. With the abo required turbine overspeed protection systen herwise,.

inoperable, in 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> isolate the turbine from the steam ply.

SURVE!LLANCE REQUIREMENT $

4.a.m.1 The provisions of Specif ation 4.0.4 are not applicable.

3.8.2 The above required turbine erspeed protection system shall be L nstrated OPERABLE:

l4 *At least once per 7 days by cyc ng each of the following valves through at least one complete cyc from the running position and.

bserving valve closure:

1. Four high pressure turbine stop v ves,
2. Iow pressure turbine low pressu stop valves,
3. Four igh pressure turbine control valve and
4. Six low ssure turbine intercept valves.
b. -At least once pe 18 months by performance of a C EL CALIBRATION of the turbine ove peed protection instrumentation.
c. At least once per 40 nths* by dismantling and inspecti at least i one of each of the abov valves and performing a visual a surface inspection of all valve s ts,-disks, and stems and verifyi no unacceptable flaws or exces tve corrosion. If unacceptable ws or excessive corrosion are foun all other valves of that type sh 11.

be inspected, q

  • The initial surveillance test interval is e tended on a one time basis to the first refueling outage.

, FERMI - UNIT 2 3/4 3 85 Amendment lio. 33

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INSTRUMENTATION I ,

BASES MONiiORING INSTRUMENTATION (Continued) 3/4.3.7.12 RADIOACTIVE GASEOUS EFFLUEkT MONITORING' INSTRUMENTATION, q The radioactive gaseous effluent' monitoring instrumentation is provided )

to monitor and' control, as applicable, the releases of radioactive materials q in gaseous effluents during actual or potential releases of gaseous effluents.

The alarm / trip setpoints for these instruments shall be calculated and adjusted I in accordance with the methodology and parameters in the ODCM utilizing the  ;

system design flow rates as specified in the ODCM, This conservative method

-is used because the Fermi 2 design does not include flow rate measurement -

devices. This will ensure the alarm / trip will occur prior to exceediry the limits of 10 CFR Part 20. This-instrumentation also includes provis'ons for monitoring and controlling the concentrations of potentially explos'.ve gas mixtures in the main condenser offgas treatment system. The OPERAr,ILITY and use of this instrumentation =is consistent with the requirements of General Design Criteria 60,, FN and 64 of Appendix A to 10 CFR Part 50.

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s ecification is provided to ensure that the turbine overspeed '

protection s umentation and the turbine speed control valves are OPERABLE and will protec e from excessive overspeed. Protection d

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from turbine excessive overspeed is no to protect safety related in order to-

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, components, equipment, or structures. However, it L improve overall plant reliability. l 3/4.3.9 FEEDWATER/ MAIN TURBINE TRIP SYSTEMS ACTUATION INSTRUMENTATION l

' The feedwater/ main turbine trip systems actuation instrumentation is <

provided to initiate action of the feedwater system / main turbine trip system in the event of a high' reactor vessel water level.due to failure of the [

-feedwater controller under maximum demand. .

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