ML20155D544

Proposed Tech Specs Pages for Proposed Amend to Relocate Turbine Overspeed Protection TS 3/4.3.4 to TRM

ML20155D544
Person / Time
Site:	South Texas
Issue date:	10/29/1998
From:	HOUSTON LIGHTING & POWER CO.
To:
Shared Package
ML20155D533	List: ML20155D544 NOC-AE-000263, Application for Amends to Licenses NPF-76 & NPF-80, Respectively.Amend Would Relocate Turbine Overspeed Protective TS 3/4.3.4 to TRM
References
NUDOCS 9811030241
Download: ML20155D544 (7)

Text

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i INDEX LIMITING CONDITIONS FOR OPERATION AND SURVEILLANCE RE0VIREMENTS 1

SECTION g

TABLE 4.3-4 SEISMIC MONITORING INSTRUMENTATION SURVEILLANCE REQUIREMENTS......................

3/4 3-57 Meteorological Instrumentation.............

3/4 3-58 TABLE 3.3-8 METEOROLOGICAL MONITORING INSTRUMENTATION......

3/4 3-59 TABLE 4.3-5 METEOROLOGICAL MONITORING INSTRUMENTATION SURVEILLANCE REQUIREMENTS......................

3/4 3-60 Remote Shutdown System.................

3/4 3-61 TABLE 3.3-9 REMOTE SHUTDOWN SYSTEM................

3/4 3-62 TABLE 4.3-6 REMOTE SHUTDOWN MONITORING INSTRUMENTATION SURVEILLANCE REQUIREMENTS................

3/4 3-66 Accident Monitoring Instrumentation...........

3/4 3-67 TABLE 3.3-10 ACCIDENT MONITORING INSTRUMENTATION.........

3/4 3-68 TABLE 4.3-7 ACCIDENT MONITORING INSTRUMENTATION SURVEILLANCE REQUIREMENTS......................

3/4 3-73 Chemical Detection Systems...............

3/4.1-75 TABLE 3.3-11 (This table number is not used)...........

3/4 3-77 Radioactive Liquid Effluent Monitoring Instrumentation DELETED TABLE 3.3-12 RADI0 ACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION DELETED TABLE 4.3-8 RADI0 ACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION SURVEILLANCE REQUIREMENTS DELETED 1

Explosive' Gas Monitoring Instrumentation........

3/4 3-79 TABLE 3.3-13 EXPLOSIVE GAS MONITORING INSTRUMENTATION......

3/4 3-80 TABLE 4.3-9 EXPLOSIVE GAS MONITORING INSTRUMENTATION SURVEILLANCE REQUIREMENTS................

3/4 3-82 3/4.3.4 -TUPa!N: OV:PJPEED PROTECTIO"................-3/4 3 4 (This specificatioe mber /s ad aged)

SOUTH TEXAS - UNITS 1 & 2 vi Unit 1 - Amendment No. 47 Unit 2 - Amendment No. 36 9eno m 20M PDR ADOCK 05000498 P

PDR

INDEX L

BASES SECTION PAGE 3/4.0 APPLICABILITY...............................................

B 3/4 0-1 1

3/4.1 ' REACTIVITY CONTROL SYSTEMS 3/4.1.1-BORATION CONTR0L..........................................

B 3/4 1-1 3/4.1.2 'BORATION SYSTEMS..........................................

B 3/4 1-2 l

3/4.1.3 MOVABLE CONTROL ASSEMBLIES................................

B 3/4 1-3 3/4.2 POWER DISTRIBUTION LIMITS...................................

B 3/4 2-1 3/4.2.1 AX I AL F LUX DIFFERENCE.....................................

B 3/4 2-1 3/4.2.2 and 3/4.2.3 HEAT FLUX HOT CHANNEL FACTOR and NUCLEAR ENTHALPY RISE HOT CHANNEL FACTOR.................

B 3/4 2-2 FIGURE B 3/4.2-1 TYPICAL INDICATED AXIAL FLUX DIFFERENCE VERSUS THERMAL P0WER............................................-

B 3/4 2-3 3/4.2.4 QUADRANT POWER TILT RATI0.................................

B 3/4 2-5 3/4.2.5 DNB PARAMETERS............................................

B 3/4 2-5 3/4.3 INSTRUMENTATION 3/4.3.1 and 3/4.3.2 REACTOR TRIP SYSTEM and ENGINEERED SAFETY FEATUREf ACTUATION SYSTEM INSTRUMENTATION................

B 3/4 3-1 3/4.3.3 MONITORING INSTRUMENTATION................................

B 3/4 3-3 3/4.3.4 T= =: =:=::C FCT:CTI=................... 0.....

3/ 34 (TMs speciRcdioN Wumber is ~not usec 3/4.4 REACTOR COOLANT SYSTEM 3/4.4.1 REACTOR COOLANT LOOPS AND COOLANT CIRCULATION.............

B 3/4 4-1 3/4.4.2 SAFETY VALVES.............................................

B 3/4 4-1 3/4.4.3 PRESSURIZER...............................................

B 3/4 4-2 3/4.4.4 -RELIEF VALVES.............................................

B 3/4 4-2 3/4.4.5 STEAM GENERATORS..........................................

B 3/4 4-2 3/4.4.6 REACTOR COOLANT SYSTEM LEAKAGE............................

B 3/4 4-3 3/4.4.7 CHEMISTRY.................................................

B 3/4 4-4 Ed_4 A. O Fr T F T P AI.T T L/I.TL B 3,M 4 SOUTH TEXAS - UNITS 1 & 2 xiii

INSTRUMENTATION Q (. g 3/4.3.4 bRBINE OVERSPEED pR'OTF/ TION (LTHITINGCONDITIONFOROPERAN

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3.3.4 At least one Turb e Overspeed Protection Syst shall be OPERABLE.

APPLICABILITY: H0 DES, 2, and 3.

ACTION:

a.

With o stop valve or one governor alve per high pressure turbine ste ine inoperable and cept valve pc.- low p/or with e reheat stop valve or one rehe l

int ressure urbine steam line inoperable, tore the inoperable valve (s) to OPERABLE status within 72 ha r

s, r close at least one valve 1gthe affected steam line(s) or i late the turbine from the steam pply within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

With the above required urbine Overspeed Protection Sys otherwise inoperable, thin G hours isolate the turbin from the steam supply.

SURVEILLANCE RE0VIREMENTS 4.3.4.1 The provision of Specification 4.0.4 are not icable.

4.3.4.2 The above equired Turbine Overspeed Protec n System shall be demonstrated OPE LE:

a.

At ast once per 31 days in H0 DES 1 p d 2 when the main turbine is rating by cycling each of the foUowing valves through at least o

e complete cycle from the runni g' position:

1)

Four high pressure turbin stop valves, 2)

Four high pressure tur e governor valves, 3

Six low pressure turb reheat stop valves, and 4

Six low pressure tur ne reheat intercept valves.

b.

At least once per 31 ys in H0 DES I and 2 when the main tur ne is cperating by direct servation of the movement of each of he above valves through one emplete cycle f;om the running posit n,

c.

At least once p 18 months by performance of a CHANN CALIBRATION on the Turbin Overspeed Protection Systems, and d.

At least o e per 40 months by disassembling at ast one of each of the abov valves and performing a visual and s face inssection of valve s ts, disks, and stems and verifying n unace.eptaale flaws or exces ve corrosion.

If unacceptable flaws r excessive corrosion are ound, all other valves of that type all be inspected.*

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• Disassem y and inspection of the low pressure urbine reheat intercept valves e not required prior to the end of e first 40 month interval.

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SOUT TEXAS - UNITS 1 & 2 3/4 -84 Unit 1 - Amendment No. 40dit. 67

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Unit 2 - Amendment No. 86,56 1

1NSTRUMENTATION BASES 3/4.3.3.6 ACCIDENT MONITORING INSTRUMENTATION (Continued) quadrant. The unit specific response to Item II.F.2 of NUREG-0737 further discusses the core exit thermocou)les. Two sets of two thermocouples ensure a single failure will not disable tie ability to determine the radial temperature gradient. The subcooling margin monitor requirements are not affected by allowing 2 thermocouples/ channel / quadrant as long as each channel has at least four operable thermocouples in any quadrant (e.g., A Train has four operable thermocouples in one of the quadrants, and C Train has four operable thermocouples in the same quadrant or any other quadrant.). This preserves the ability to withstand a single failure.

3 /4. 3. 3. 7 (Not Used) 3 /4. 3.3.8 (Not Used) 3/4.3.3.3.9 (Not Used) i 3/4.3.3.10 DELETED 3/4.3.3.11 EXPLOSIVE GAS MONITORING INSTRUMENTATION l

This instrumentation includes provisions for monitoring (and controlling) the concentrations of potentially explosive gsa mixtures in the GASE0US WASTE PROCESSING SYSTEM.

3/4.3.4$URBINEOVEMPEEDPROTECT10NT

%c This spec cation is provided to e ure that the turbine ove peed protection i rumentation and the tur ne speed control valves e OPERABLE and will tect the turbine from ex ssive overspeed.

Protec on from turbin xcessive overspeed is re red since excessive over eed of the turb e could generate potential damaging missiles which ould impact and da ge safety-related componen

, equipment, or structur 4

SOUTH TEXAS - UNITS 1 & 2 B 3/4 3-6 Unit 1 - Amendment No. 4h76,77, Unit 2 - Amendment No. -36,65,66,

s.

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ST-NOC-AE-000263 Page1-l Technical Requirements Manual Pages Technical Requirements Manual Pages Enclosed 3/4.3-5 B 3/4.3-1 1

1 4

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INSTRUMENTATION NOTE THIS TRM REQUIREMENT DUPLICATES THE REQUIREMENTS OF TECHNICAL SPECIFICATION 3/4.3.4.

3/4:3.4 TURBINE OVERSPEED PROTECTION THE REQUIREMENTS AND AC110NS OF THE TECHNICAL SPECIFICATIONS GOVERN UNTIL THE NRC APPROVES THE RELOCATION AS REQUESTED IN NOC-AE-000263.

LIMITING CONDITION FOR OPERATION 3.3.4 - At least one Turbine Overspeed Protection System shall be OPERABLE.

APPLICABILITY: MODES 1,2, and 3.

' ACTION:

With one stop valve or one govemor valve per high pressure turbine steam line inoperable and/or a.

with one reheat stop valve or one reheat intercept valve per low pressure turbine steam line J

inoperable, restore the inoperable valve (s) to OPERABLE status within 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 in the affected steam line(s) or isolate the turbine from the steam supply within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

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b. With tSe above required Turbine Overspeed Protection System otherwise inoperable, within 6 1

hours isolate the turbine from the steam supply.

SURVEILLANCE REQUIREMENTS 4.3.4.1 The provisions of Specification 4.0.4 are rot applicable.

q 4.3.4.2 The above required Turbine Overspeed Protection System shall be demonstrated OPERABLE:

I At least once per 31 days in MODES I and 2 when the main turbine is operating by cycling each a.

of the following valves through at least one complete cycle from the running position:

1) Four high pressure turbine stop valves,

2) Four high pressure turbine governor valves,

3) Six low pressure turbine reheat stop valves, and

4) Six low pressure turbine reheat intercept valves.

b. At least once per 31 days in MODES 1 AND 2 when the main turbine is operating by direct observation of the movement of each of the above valves through one complete cycle from the running position, c.

At least once per 18 months by performance of a CHANNEL CALIBRATION on the Turbine Overspeed Protection Systems, and

d. At least once per 40 months by disassembling at least one of each of the above valves and performing a visual and surface inspection of valve seats, disks, and stems and verifying no unacceptable flaws or excessive corrosion. If unacceptable flaws or excessive corrosion are found, all other valves of that type shall be inspected.*

)

• Disassembly and inspection of the low pressure turbine reheat Intercept valves are not required prior to the end of the first 40 month interval.

South Texas - Units 1 & 2 3/4.3-5 TRM Amendment 10

INSTRUMENTATION BASES i

s 3/4.3.3.3 SEISMIC INSTRUMENTATIQN The OPERABILITY of the seismic instrumentation ensures that sufficient capability is available to promptly determine the magnitude of a seismic event and evaluate the response of those features important to safety. This capability is required to permit comparison of the measured response to that used in the design basis for the facility to determine if plant shutdown is required pursuant to Appendix A of 10 CFR Part 100. The instrumentation is consistent with the recommendations of Regulatory Guide 1.12, " Instrumentation for Earthquakes," April 1974.

3/4.3.3.7 CHEMICAL DETECTION SYSTEMS DELETED 3/4.3.4 TURBINE OVERSPEED PROTECTION This specification is provided to ensure that the turbine overspeed protection instrumentation and the turbine speed control valves are OPERABLE and will protect the turbine from excessive overspeed.

Protection from turbine excessive overspeed is required since excessive overspeed of the turbine could generate potentially damaging missiles which could impact and damage safety-related components, equipment, or structures.

South Texas - Units 1 & 2 B 3/4.3-1 TRM Amendment 10 i

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