ML20080P359

Proposed Tech Specs Re Containment Spray Pump Differential Pressure

ML20080P359
Person / Time
Site:	Comanche Peak
Issue date:	02/28/1995
From:	TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML20080P337	List: ML20080P359 TXX-9505, LAR 95-001 to Licenses NPF-87 & NPF-89,changing TS to Address Performance Requirements of Containment Spray Pumps
References
NUDOCS 9503070332
Download: ML20080P359 (11)

Text

{{#Wiki_filter:, Enc 1:sure 1 to TXX 95050 Page 1 of 5 TECHNICAL REQUIREMENTS MANUAL TABLE OF CONTENTS TECHNICAL REOUIREMENT NUMBER SYSTEM / TITLE (Related Tech Spec _if required) 0 Administrative Controls 0.1 (1.0)- Definitions 0.2 (3/4.0) Applicability 1.1 (3/4.3.1) Reactor Trip Response Time 1.2 (3/4.3.2) ESF Actu4 tion Response Time 1.3 Moveable Incore Detection i System 1.4-Seismic Instruments i I j 1.5 Loose Parts Detection System 2.1(3/4.6.3) Containment Isolation Valves ) 3.1(3/4.7.9) Snubbers 11 i 3.2 Deleted 3.3 Deleted i j 4.1(3/4.8.4) Containment Penetration Conductor Overcurrent j Protection Devices ? i j l 2.2 (s/y.c.2.1) c carw-ur %r 3ysren i 4 4 i l l J 9503o70332 95022s PDR ADOCK 05000445 p PDR COMANCHE PEAK - UNITS 1 AND 2 i Revision 11 l February 5, 1993 ~l

- Enclosure 1 to TXX 95050 Page*2 cf 5 . TECHNICAL REQUIREMENT 2.2 CONTAINMENT SPRAY-SYSTEM ' NOTE: This Technical Requirement contains performance test requirements for the - i Containment Spray System pumps to demonstrate operability in accordance wi. Technical Specification Surveillance Requirement 4.6.2.1b. Although the CPSl Technical Specification 's repeated here, in part, care must be taken not to L overlook the Technical pecification requirements. k 'j i l' J .i - i 4i I i 4 I i i e l e 4 N J h i i

__ to TXX 95050 Page 3 of 5 CONTAINMENT SYSTEMS 3/4.6.2 ~DEPRESSURIZATION AND COOLING SYSTEMS . CONTAINMENT SPRAY S g LIMITING CONDITION FOR OPERATION 3.6.2.1 Spray System capable of taking suction from the R suction to the containment sump. APPLICABILITY: MODES 1, 2, 3, and 4. EHQti: With one Containment Spray System inoperable, restore the inoperable Containment Spray System to OPERA 8LE status within 72 hours or be in a HOT STAN08Y within the next 6 hours; restore the inoperable Containm System to OPERA 8LE status within the next 48 l>ours or be in COLD EHUT within the following 30 hours. I i SURVEILLANCE REQUIREMENTS j 4.6.2.1 fach Containment Spray System'shall be demonstrated OPERA 8LE: j At least once per 31 days by verifying that each valve a. power-operated, or automatic) in the flowsealed, or othe

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j position; is in its correct a j b. By verifying that in the test mode each train' provides a total dis-i charge flow through the test header of greater than or equal to } 6600 gpa at 245 psid with the pump eductor line open when tested ursuant to Specification 4.0.5- } At least once per 18 months, by: c. l 1) Verifying that each automatic valve in the flow path actuates i j to its correct position on a Containment Spray Actuation test signal, and h 2) Verifying that each spray pump starts automatically on a t Containment Spray Actuation test signal and on a Safety l 5 Injection test signal. i d. At least once per 5 years by performing an air or smoke ' flow test 4 through each spray header and verifying each spray nozzle is unahntructed. \\(e,,,,, q e a ch ce n +a m men + sr en g HmP's klap<d he<J s+ f i pp +e.s+ p o o n +- as a en~4er +W er eposI +c +hs ec y J *L i ge << lo pe,L h s-J. < <.< e e =I m s. e. sarvs*II*n<.<- Th 9re.an~ on .v, A +<

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COMANCHE PEAK - UNITS 1 AND 2 e.n +, y t3roy e ~ - l 3/4 6-11 Unit 1 - noenament no. M,32 Unit 2 - Amendment No.18

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to TXX 95050 Fa9e 4 of 5 CQNTAlle(ENT SYSTDtS i

i j BASES i n i I CONTAlletENT VENTILATION SYSTDI (Continued) ) i Leakage integrity tests with a maximum allowable leakage rate for contain-i- ment ventilation valves will provide early indication of resilient material seal l degradation and will allow opportunity for repair before gross leakage failures i could develop. The 0.40 L ' eakage limit of specification 3.6.1.2b. shall not be exceeded when the leakag,e rates determined by the leakage integrity tests of i i these valves are added to the previously determined total for all valves and penetrations subject to Type 8 and C-tests. 3/4.6.2 DEPRESSURIZATION AMn etW INc SYSTDt1 j 3/4.6.2.1 CONTAlleENT SPRAY 5Viiin The OptRASILITY of the Containment Spray Systeep ensures that containment depressurization and cooling capability will be available in the event of 4 LOCA 1 or steam line break. The pressure reduction and resultant lower containment leakage rate are consistent with the assumptions used in the safety. analyses.- 1 l The Containment Spray System which is coupesed of redundant trains, provides i l post-accident cooling of the containment atmosphere. However, the Containment Spray System also provides a mechanism for removing todine from the containment i atmosphere and therefore the time requirements for restoring an inoperable Spray System to OPERABLE status have been maintained consistent w<th that assigned j other inoperable ESF equipment. i M j 3/4.6.2.2 SPRAY _AnhITIVE SYSTDI i The OPERASILITY of the Spray Additive Systes ensures that sufficient Na0H is added to the containment spray in the event of a LOCA. The limits on Na0H volume and concentration ensure a long term pH value of between 8.5 and 10.5 for the i solution recirculated within containment after a LOCA. I This pH band minimizes the evolution of iodine and minimizes the effect of chloride and caustic str corrosion on mechanical systems and components. The contained solution volume limit includes an allowance for solution not usable because of tank discharge i line location er other physical characteristics. These assumptions are con-j sistent with tie iodine removal efficiency assumed in the safety analyses. l The required indicated level band of 915 to 945 for: the Spray Additive Tank corresponds to an analytical limit band of 4900 gallons to 5314 gallons, l respectively, and includes a 3.365 measurement uncertainty. I INSERT Vergybeg each conteknunt greypunpe's dewehpod heed at neflow notpekt k grosur non er equel u de requked devel. ped hand as defheed k ne TechnicalRequkenenen Mennel(TRM), assures not ne sprey perfernmence han Jeet degraded darkg de cycie. Flew med dyernsedelprussere are mornentsesa ofc 1-perfernannet requked by %*i== XI ofhe ASME Code. Sheer ne "===* speny punpe cannet be sessed wn i flew nreagh ne sprey heeders, eey are sened vie e sent thee. Thk sent coqfErna onepehet en ne ene ) curve and k hediendw ofestrellperfernannee. Such baservice %: L cogliene conpenent OPERARILITY, ) mnedperfernannee, med denect heetodent)indinres by sheernentperfernannes. The frequency of ne sarveitten { eccordance wM de frsserviet Tesshg Progrant 1 j COMhMCHE PEAK - UNITS 1 AfC 2 0 3/4 6-3 I

) to TXX 95050 4 Page 5 ef 5 J TECHNICAL REQUIREMENT 2.2 . l l.. 2.2.1 In the test mode each Containment Spray System train is required to provide a total discharge flow through the test header of greater than or equal to 6600 gpm at 245 psid with the pump eductor line open. 1j t i f I i 1 4 e i i l ) K e i i 1 + } e e

4 l e i l l l l l l I l ENCIOSUREL2 TO TXX 95050 l NUREG 1431 PAGES ASSOCIATED WITH THE LICENSE AMENDMENT REQUEST i 1 9 i a 'A l

I j to TXX 95050 1

• - Page 1 of 2 Containme'nt Spray and Cooling Systems-(Atmospheric and Dual) i.

3.6.6A 1 'SdRVEILLANCEREQUIREMENTS (continued) SURVEILLANCE FREQUENCY; 5 SR 3.6.6A.2 Operate each [ required]Lcontainment cooling - 31 days train fan unit for a 15 minutes, a SR 3.6.6A.3 Verify each-[ required). containment cooling 31 days Ltrain cooling water flow rate. is a [700]. gpe. ^ i i SR 3.6.6A.4 Verify each containment spray. pump's In accordance i developed head at the~ flow test point is with.the greater than or equal to the required-Inservice developed head. Testing Program SR 3.6.6A.5 Verify each automatic containment-spray . [18] months valve in the flow path. actuates to the correct position on an actual or simulated-actuation signal. SR 3.6.6A.6 Verify each containment spray pump starts- [18] months automatically on an actual or simulated-actua' tion signal. i SR 3.6.6A.7 Verify each [ required] containment cooling [18] months train starts automatically on an actual or. simulated actuation signal. (continued) ~ WOG STS-3.6-25 Rev.-:0,'09/28/92' m n-- W- -, ...y e g.,m -*Nrt$ 'r*- 'sp- "M

- to TXX 95050 [,Page 2 of 2 Conta'inment Spray and Cooling Systems (Atmospheric and Dual) B 3.6.6A f BASES SURVEILLANCE SR 3.6.6A.2 i REQUIREMENTS } (continued) Operating each [ required] containment cooling train fan-unit U for e-15 minutes ensures that all trains are OPERA 8LE and [ that all associated controls are functioning properly. It: also ensures that blockage, fan or motor failure..or-3 excessive vibration can be detected for corrective action. The 31' day Frequency was. developed considering the known - i reliability of the fan' units and controls, the two train redundancy available, and the 1ow probability 1of significant-j degradation of the containment cooling train occurr'ng i between surveillances. It has also been shown to be I acceptable through operating experience. l SR 3.6.6A.3-2 [ Verifying that each [ required] containment coolin cooling flow rate to.each cooling unit is t-[700]g train ESW j } . gpa. ] provides assurance that the design flow rate assumed in the safety analyses'will be achieved (Ref. 3).. The Frequency' l . was developed considering the known reliability of the i Cooling Water System, the'two train redundancy available, [, and the low probability of a significant degradation of flow j occurring between surveillances. i SR 3.6.6A.4 1 I Verifying each containment spray pump's developed head at the flow test point is greater than or~ equal to the required i i developed head ensures that spray pump performance has not i j degraded during the cycle. Flow and differential pressure are normal tests of centrifugal pump performance required by i Section XI of the ASME Code (Ref. 8). Since the containment spray pumps cannot be tested with flow through the spray. headers, they are tested on recirculation flow. This test s i confirms one point on the pump design curve and is indicative of overall performance. Such inservice inspections confirm component OPERABILITY, trend i performance, and detect incipient failures by abnormal performance. The Frequency of the SR is in accordance with j the Inservice Testing Program. l i (continued) WOG STS B 3.6-71 Rev. O,09/28/92

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L to TXX 95050 { Page 1 of 2-u 4-CONTAINMENT SYSTEMS 3/4.6.2 DEPRESSURIZATION AND COOLING SYSTEMS 1 CONTAINMENT SPRAY SYSTEM 2 l-LIMITING CONDITION FOR OPERATION 4 3.6.2.1 Two independent Containment Spray Systems shall be OPERA 8LE with each j Spray System capable of taking suction from the RWST and manually transferring suction to the containment sump. 1-APPLICABILITY: MODES 1, 2, 3, and 4. l EI13: With one Containment Spray. System inoperable, restore the inoperable Containment Spray System to OPERA 8LE status within 72 hours or be'in at least j HOT STANDBY within the next 6 hours; restore the inoperable Containment Spray j System to OPERABLE status within the.next 48 hours or be in~ COLD SHUTDOWN ) within the following 30 hours. i SURVEILLANCE REQUIREMENTS l 4.6.2.1 Each Containment Spray System shall be demonstrated OPERA 8LE: ~ - At least once per 31 days by verifying that each valve (manual,- a. power-operated, or automatic) in the flow path that is not locked,. sealed, or otherwise secured in position, is in its correct. ) position; y b. By verifying that in the test mode each train provides a total dis-charge flow through the test header of greater than or equal to l 6600 gpm at 245 psid with the pump eductor line open when tested ursuant to Specification 4.0.5; i c. At least once per 18 months, by: l 1) Verifying that each automatic valve in the flow path actuates to its correct position on a Containment Spray Actuation test signal, and 2) Verifying that each spray pus; starts automatically on a j Containment Spray Actuation test signal and on a Safety j In,jection test signal. d. At least once per 5 years by performing an air or smoke flow test through each spray header and verifying each spray nozzle is unnbstructed. Q e.a c.k c o n + *

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l 'to TXX 95050' i Page 2 of 2 i-l CONTAIMENT SYSTDts j BASES i ( j CONTAINMENT VENTILATION SYSTEM (Continued) i i l Leakage integrity tests with a maximum allowable leakage rate for contain-ment ventilation valves will provide early indication of res111eht material seal i degradation and will allow ojportunity for repair before gross leakage failures j could develop. The 0.60 L l eakage limit of specification 3.6.1.2b. shall not i be exceeded when the leakag,e rates determined by the leakage integrity tests of these valves are added to the previously oetermined total for all valves and penetrations subject to Type 8 and C tests. 3/4.6.2 DEPRESSURIZATION AM C00 LIM SYSTEMS 3/4.6.2.1 CONTAIMENT SPRAY SYSTEM i The OPERA 8!LITY of the Containment Spray Systes ensures that containment 1 depressurization and cooling capability will be available in the event of a LOCA l. or steam line break. The pressure reduction and resultant lower containment i j leakage rate are consistent with the assumptions used in the safety analyses. j The Containment Spray System which is composed of redundant' trains, provides j post-accident cooling of the containment atmosphere. However, the Containment i Spray System also provides a mechanism for removing iodine from the containment j atmosphere and therefore the time requirements for restoring an inoperable pray i System to 0PERA8LE status have been maintained consistent w'th that assigned j other inoperable ESF equipment. 3!4.6.2.2 SPRAY ADDITIVE SYSTEN i The OPERASILITY of the Spray Additive Systes ensures that sufficient Na0H is added to the containment spray in the event of a LOCA. The limits on Na0H volume l l and concentration ensure a long tore pH value of between 8.5 and 10.5 for the i solution recirculated within containment after a LOCA. This pH band minimizes the evolution of iodine and minimizes the effect of chloride and caustic stress i corrosion on mechanical systems and components. The contained solution volume limit includes an allowance for solution not usable because of tank discharge line location er other physical characteristics. These assumptions are con-sistent with the tot 2ine removal efficiency assumed in the safety analyses. The required indicated level band of 915 to 945 for: the Spray Additive Tank l corresponds to an analytical liett band of 4900 gallons to 5314 gallons, respectively, and includes a 3.365 seasurement uncertainty. INSERT Veryying each contahement sprey pungs's k:':;:! head at deflow testpekt k greater den or equal to de required devels ped head as defheed k ne Technkel Requkeneena Manual (TRM), ensures not the spray punp i perferneance has not degraded durkg ne cycle. Flow and 4gerentielpressure are norneel tests ofcentepgelpung l perferneance required by Secnon XI of 6e ASME Code. Skce ne ca-san =am*=npreypunps cannot be sessed win flow nrough ne sprey headers, ney are tenned wie a test nne. Thk nest coqprnes onepoht on ne analyticalpung i curve and k indicatin ofoverallperferneance. Such baservke %=-:t ; confirm conponent OPERABILITY, l' trendperferneance, and denect inc%entfnRures by abnornealperferneance. The Frequency of ne surveillance k in f accordance win ne inservice Tenneg Progrens. j l COMANCHE PEAK - UNITS 1 Ale 2 B 3/4 6-3 _}}