Text

Proposed Tech Specs Re Limiting Condition for Operation & Surveillance Requirements for Flow Measurement Uncertainties
	ML20070S576
Person / Time
Site:	Vogtle
Issue date:	03/29/1991
From:	; GEORGIA POWER CO.
To:	;
Shared Package
ML20070S574	List: ELV-02661, Forwards Suppls to 901129 Application for Amends to Licenses NPF-68 & NPF-81,increasing RCS Flow Uncertainty to Account Cleaning of Feedwater Venturis Used to Measure Feedwater Flow to Determine Reactor Power Level; ML20070S576;
References
	NUDOCS 9104020343
	Download: ML20070S576 (12)
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MARKED-UP PAGE9 EFFECTIVE AS OF V0GTLE 1 CYCLE 4 i

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, 9104020343 910329 PDR ADOCK 05000424 P PDR

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POWER DI$iRIBUTION LIM]TS I3 " " I 3/4.2.5 DNB PARAMETERS LIMITING CONDITION FOR OPERATION 3.2.5 The following DNB-related parameters shall be maintained wi'.nin the limits: I

a. Reactor Coolant System T _ (TI-0412. TI-0422. TI-0432. TI-0432),

SMT5W.5'F (vdIT I) w SWF (vyM

b. Pressurizer Pressure (PI-U455A,5&C Fi-ve56 & PI-0456A, PI-0457 &

PI-0457A, PI 0458 & PI-0458A), 1. Ets a k -

c. Reactor Coolant System Flow (FI-0414, FI-0415, FI-0416, FI-0414, ;

FI-0425, FI-0426,- FI-0434, FI-0435, FI-0436, FI-0444, FI-0445, i FI-0446) 1 % 198 p K e APPLICABILITY: MODE 1.

ACTION: /

With any of the above parameters exceeding its limit, restore the paramoter to-within its limit within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months or reduce THERMAL POWER to less than 5% of RATED THERMAL POWER within the next 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months .

SURVEILLANCE REQUIREMENTS 4.2.5.1 Reactor Coolant System T,y and Pressurizer Pressure shall be.

verified to be within thei limits 1at least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . RCS flow rate shall be monitored for degradation at least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . In the event of flow degradation, RCS flow rate shall be .

determined by precision heat balance within 7-days of detection of flow degradation.-

4.2.5.2 The RCS flow rate indicators shall'be subjected to CHANNEL CALIBRATION at each fuel loading and at least once per 18 months.

4.2.5.3 After each fuel loading, the RCS flow rate shall be determined by precision heat balance f-ior-to operation above 75% RATED THERMAL POWER. The RCS flow e 5 thall also be determined by precision heat balance at least ons. A months. Within 7 days pr.ior,,to_per- '

forming the precisioi - salance flow measurement, the instrument-I ation used for perfor " ; ne precision heat balance shall be calibrated. The provisions of 4.0.4 are not applicable for performing

. the precision heat balance flow measurement.

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Limit not applicat,le during either a THERMAL POWER ramp in excess of 5% of RATED THERMAL POWER per minute-or a' THERMAL POWER step in excess of 10% of RATED THERMAL POWER.

- Includes a flow measurement unce.'tainty. _

V0GTLE UNITS - 1 & 2

@*% (MiT 0 w 3.5% 3/4 g u (voiT 2.) )

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i3 hAcg AfNcABL.E D @T I OAC POWEROkSTRIBUTIONLIMITS f

BASES 3/4.2.5 DNB PARAMETERS (Continued)

The 12-hour periodic surveillance of these parameters through instrument readout is sufficient to ensure that the parameters are restored within their limits following load changes and other expected transient operation. The-18 month periodic measurement of the RCS total flow rate is adequate to detect flow degradation and ensure correlation of the flow indication channels with measured flow such that the indicated percont flow will provide suf ficient verification of the flow rate degradation on a 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months basis. A change in indicated p'ercent flow which is greater than the instrument channel inaccuracies and parallax errors is an appropriate indication of RCS flow degradation.

wh +/n a c s +dal FL ra te i , n u a u < ,,. J , n c> caddy!;n/

a llown c. : avr necessa ry pior to //e compa rlsu w WI fAe liinNs er Sp eclfibabb n 3, 2, T, Ts A <"rasare n'eI ance+ftln/y t n clu des- an aUstvance of o. / '% fo. o ccCUA fse m o/w dee a 4,l foa/s, ,

I en 2- 4 I

V0GTLE UNITS - 1 & 2 B 3/4 h e . a.

--=y - - -

w r r,wc,e %,4 ,-.e.e. ,e---e w -ww--i+1e- -,7 w w .:,ww-,-ve- e-e-

1 MARKED-UP PAGES EFFECTIVE AS OF V0GTLE 2 CYCI.E 3 i

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I POWER DISTRIBUTION LIMITS' I 3/4.2.5 DNB PARAMETERS 1

LIMITING CONDITION FOR OPERATION 3.2.5 The following DNB-related parameters shall be maintained within the limits:

a- Reactor Coolant System TavoL (T1-0412. 71-0422. TI-0432. TI-0442),_

I 5 592.5'Fgnit 1) er 5 59Pr (Unity)}.

b. Pressurizer Pressure (PI-0455A,8&C, PI-0456 & Pl-Q4N. PI-0457 &_

JI-0451A, PI-0458 & Pl-0458A),12199 psig* %Un44) or 222'. Ngy =

u urii 6 63

c. Reactor Coolant System Flow (F1-0414, F1-0415 F1-0416, F1-0424, F1-0425, F1-0426, F1-0434, F1-0435. F1-0436. FI-0444, F1-0_445, F1-0446) 1 391,605 gpm**[-(Unli i) m 390, ' 00-gpm**- ( Ud t 2 3 .l APPLICABillTY: MODE 1.

ACTION:

With any of the above parameters eneeding its limit, restore the' parameter -to within its limit within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months or reduce-THERMAL POWER to less than 5% of-Ri.it0 THERMAL POWER within the next 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months .

SURVEILLANCE RE0VIREMENTS 4.2.5.1 Reactor Coolant System T avg and Pressurizer Pressure shall be verified to be within their limits -at least-once' per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . RCS flow rate shall be monitored for degradation at least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . In the event of flow. degradation, RCS flow rate shall_be determiner' by precision heat balance within 7 days of detection of flow (bgradation.

4.2.5.2 The RCS flow rate indicators shall be subjected to CHANNEL' CAllBRATION at each fuel loading and _at least once per 18 months.

4.2.5.3 Af ter each fuel loading, the RCS flow rate shall be determined by precision heat balance prior to-operation above 75% RATED THERMAL.

POWER. The RCS flow rate shall also be determined-by precision. heat-balance at least once per 18 months. Within 7 days prior to per-l forming the precision heat balance flow measurement,:the instrument--

l -- ation used for performing the precision heat balance shall be l- calibrated. The provisions- of a -0.4 are not applicable for performing the precision heat balance flow measurement.

Limit not applicable during either-a THERMAL. POWER ramp in excess of 5% of RATED THERMAL POWER per minute or a -THERMAL POWER step in excess of 10% of RATED THERMAL POWER.

- Includes a 2.3%IIUaii i) er 3.'&-HhW flow measurement uncertainty.

V0GTLE UNITS - 1 & 2 3/4-2-13

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Ti;10 PACE iPN ICf3tE TO U"IT ' ONLV l

POWER OlSTRIBUTION l.lMITS -UN1' '

BASES 3/4.2.5 DNB PARAMETERS (Continued)

The 12-hour periodic surveiliance of these parameters through instrument readout is suf ficient to enstt;e that the parameters are restored within their limits fol! cuing load changes and other expected transient operation. The 18 month periodic measurement of the RCS total flow rate is adequate to detect flew degradation and ensure correlation of the flow indication channels with measure'J flow such that the indicated percent flow will provide suf ficient verification af the flow rate degradation on a 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months basis. A change in indicated percent flow which is greater than the instrument channel inaccuracies and parallax errors is an appropriate indication of RCS flow degradation.

When the RCS total flow rate is measured, no additional allowances are necessary prior to the comparison with the limits of Specification 3.2.5. The measurement uncertainty includes an allowance of 0.1% to account for feedwater venturi fouling.

I V0Gil t UNilS - 1 & 2 8 3/4 2-4 l

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TYPED PAGES EFFECTIVE AS OF V0GTLE 1 CYCLE 4 L7

I POWER DISTRIBUll0N llMlls F4.2,5 DNB PARAMETfk]

UMlilNG CONDITION FOR OPERAllqN _

3.2.5 The following ONB-related parameters shall be maintained within the Mmits;

a. Reactor Coolant System Tay (11-0412. 11-0422. 11-0432, 11-0442),

5592.5'i(Unit 1)or559$*F(Unit 2). l

b. Pressurizer Pressure (PI-0455A,B&C, P!-0456 & PI-0456A, PI-0457 &

PI-0457A, Pl-0458 & PI-0450A), 2 2199 psig* (Unit 1) or 2224 psig*

(Unit 2).

L. Reactor Coolant System Flow (F1-0414 F1-0415, F 1-0416. F1-0a?4, F 1-0425. F1-0426, F 1-0434, F 1-0435, F 1-0436. F I-0444, F1-048 9, F1-0446) 2 391.605 gpm** (Unit 1) or 396,198 gpm** (Unit *,s.

APPL IC AB l.LLT.1: MODE 1.

AC110N:

With any of the above parameters exceeding its limit, r. store the parameter to within its limit within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months or reduce THERMAL POWEL to less than 5% of RAll0 THERMAL POWER within the next 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months .

SE yllELANCE RE0VJ1[MENTS _ _

4.2.5.1 '

Reactor Coolant Syste'n T av and Pressurizer Pressure shall be verified to be within thei limits at least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . RCS flow rate shall be monitored for degradation at least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . in the event of flow degradation, RCS flow rate shall be determined by precision heat balance within 7 days of detection of flow degradation.

4.2.5.2 The RCS tlow rate indicators shall be subjected to CHANNEL CAllBRAT10N at each f uel loading and at least once per 18 months.

4.2.5.3 After each fuel loading, the RCS flow rate shall be determined by prec;sion heat balance prior to operation above 7 W RATED THERMAL POWER. The RCS flow rate shall also be determined by presision heat balance at least orce par 10 months. Withir, 7 days prier to per-forming the precision heat balance flow measurement, the instrument-ation used for performing the precision heat balance shall be calibrated. The provisions of 4.0.4 are not applicable for performing the precision heat balance flow measurement.

Limit not applicable during either a THERMAL POWER ramp in excess of 5% of RATED THERMAL POWER per minute or a THERMAL POWER step in excess of 10% of RATED THERMAL POWER.

- Includes a 2.3% (Unit 1) or 3.5% (Unit 2) flow measurev nt uncertainty, V0 Gill UNils - 1 & 2 3/4 2-13 A

. _ _ . . - ._.. _ . _ . ~ . _ . _ _ _ . _ _ _ . _ _ _ . _ . . . . _ . _ - - . _ . ._ _._._ _ . - _ _ _ _ . - _.. . .

j THIS PAGL APPL.lCABLE TO UNil 1 ONLY ;

i P0_WULDJSTRIBVTl.ON _l.1MtTS - UNil 1 i DA515 j 1

3/4,2.5 DNB PARAMETERS (Continued)

The 12-hour periodic surveillance of these parameters through instrumt j readout is suf f tcient to ensure that the parameters are restored within their :

limits following load changes _and other expected transient operation. The [

4 18 month periodic measurement of the RCS total flow rate is adequate to detect i flow degradation and ensure correlation of the flow indication channels with measured flow such that the indicated percent flow will provide suf ficient. i verification of the flow rate degradation on a 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months basis. A change in l indicated percent flow which is greater than the instrument channel inaccuracies and parallax errors is an appropriate indication of RCS flow degradation. j When the RCS total flow rate is measured, no additional allowances are ;

necessary prior to the comparison with the limits of Specification 3.2.5. The !

measurement uncertainty includes an allowance of 0.1% to account f or f eedwater j venturi fouling.

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! .V0 Gill UNilS - 1 & 2 - B 3/4 2-4' l-

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TYPED PAGES EFFECTIVE AS OF V0GTLE 2 CYCLE 3

r POWER O1STRIBUTION LIMill 3/4.2.5 DNB PARAMETERS LIMITINC CON 01T10N F OR OPER AT10N 3.2.5 The f ollowing DNB-related parameters shall be maintained within the limits:

a. Reactor Coc,iant System Tayg (T1-0412. 11-0422. 11-0432. TI-0442),

5 592.5*F. l Pressurizer Pressure (PI-0455A,B&C, PI-0456 & PI-0456A, PI-0457 & '

b.

PI-0457A, PI-045B & P!-045BA), 2 2199 psig*. l t

c. Reactor Coolant System Flow (FI-0414, F1-0415, F1-0416, F1-0424, F1-0425, F1-0426, F1-0434, F1-0435, F1-0436, F1-0444, F1-0445 F1-0446) 1391,605 gpm**. :

APPLICABillTl: MODE 1.

A. ,T I ON :

With any of the above parameters exceeding its limit, restore the parameter to within its limit within 2 hou-s or reduce THERMAL POWER to less than 5% of RATED THERMAL POWER within the next 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months .

SURVilLLANCE REQUIREMENTS _

4.2.5.1 Reactor Coolant System Tayg and Pressurizer Pressure shall be verified to be within their limits at least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . RCS t flow rate shall be Inonitored for degradation at least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months , in the event of flow degradation, RCS flow rate shall be determined by precision heat balance within 7 days of detection of flow degradation.

4.2.5.2 The RCS flow rate indicators shall be subjected to CHANNEL CAllBRAll0N at each fuel loading and at least once per 18 months. ,

4.2.5.3 After each fuel loading, the RCS flow rate shall be determined by precision heat balance prior to operation above 75% RATED THERMAL POWER. The RCS flow rate shall also be determined by precision heat balance at least once' per 18 months, Within 7 days prior to per-forming the precision heat balance _ flow measurement, the instrument-ation used for performing the precision heat balance shall be calibrated. The provisions of 4.0.4 are not applicable for performing the precision heat balance flow measurement, i

" Limit not applicable during either a THERMAL POWER ramp in excess of 5% of RATED THERMAL POWER per minute or a THERMAL POWER step in excess of 10% of RATED THERMAL POWER. *

- Includes a 2.3% flow measurement uncertainty.

l THIS PAGE BECOMES APPLICABLE FOLLOWING SHUTOOWN FROM UNIT 2 CYCLE 2-OPERATl0N.

V0GTLE UNITS - 1 & 2 3/4 2-13

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,POWLROlS1RIBul[0NllM11S 1

EASES ._

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3/4.2.5 _DNB PARAMETERS (Continued) l The 12-hour periodic surveillance of these parameters through instrument +

readout is suf ficient to ensure that the parameters are restored within their limits loilowing load changes and other expected transient operation. The 18 month periodic measurement of the RCS total flow rate is adequate to detect flow degradation and ensure correlation of the flow indication channels with measured flow such that the indicated percent flow will provide sufficient verification of the flow rate degradation on a 12 hour1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months basis. A change in indicated percent flow which is greater than the instrument channel inaccuracies and parallax errors is an appropriate indication of RC$ flow degradation.

When the RCS total flow rate is measured, no additional allowances are necessary prior to the comparison with the limits of Specification 3.2.5. The, measurement uncertainty includes an allowance of 0.1% to account for feedwater ventur! fouling.

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lHIS PAGE BECOMLS APPLICABLE FOLLOWING SliU100WN FROM UNIT 2 CYCLE 2 OPERATION.

V0G1LL UN115 - 1 & 2 03/4.2-4

ML20070S576

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