ML20080P359

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Proposed Tech Specs Re Containment Spray Pump Differential Pressure
ML20080P359
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 02/28/1995
From:
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML20080P337 List:
References
NUDOCS 9503070332
Download: ML20080P359 (11)
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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 CPS l Technical Specification 's repeated here, in part, care must be taken not to L overlook the Technical pecification requirements. k 'j i l' J 

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Enclosure 1 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 within thetofollowing OPERA308LE status within the next 48 l>ours or be in COLD EHUT hours. I i SURVEILLANCE REQUIREMENTS j 4.6.2.1 fach Containment Spray System'shall be demonstrated OPERA 8LE: ! a. , j At least once per 31 days by verifying that each valve manual, 1 j power-operated, or automatic)isininthe position; flowsealed, or othe its correct a j b. i 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 6600 gpatoatSpecification ursuant 245 psid with the pump eductor line open when tested 4.0.5- ' } c. At least once per 18 months, by:

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Verifying that each automatic valve in the flow path actuates j to its correct signal, and position on a Containment Spray Actuation test h 2) t Verifying that each spray pump starts automatically on a 5 Containment l Injection testSpray signal.Actuation test signal and on a Safety i d. 4 At least once per 5 years by performing an air or smoke ' flow test through each spray header and verifying each spray nozzle is unahntructed. i \(e,,,,, pp +e.s+ q e a ch ce n +a m men + sr en g HmP's klap<d he<J s+ f p o o n +- as a en~4er +W er eposI +c i ge << lo pe ,L h s-J . Th 

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! r. - s < ~s.e s.e.n$c. +, she ll b -c. y t3roy e ~. - COMANCHE PEAK - UNITS 1 AND 2 3/4 6-11 l Unit 1 - noenament no. M ,32 Unit 2 - Amendment No.18 

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Enclosure 1 to TXX 95050 Fa9e 4 of 5 CQNTAlle(ENT SYSTDtS i i j BASES  ! i n l i I ) CONTAlletENT VENTILATION SYSTDI (Continued) i i- Leakage integrity tests with a maximum allowable leakage rate for contain-l ment ventilation valves will provide early indication of resilient material seal degradation could develop.andThe will allow opportunity for repair before gross leakage failures i 0.40 L ' eakage limit of specification 3.6.1.2b. i shall not i be exceeded when the leakag,e rates determined by the leakage integrity tests of 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 1 leakage rate are consistent with the assumptions used in the safety. analyses.- l The Containment Spray System which is coupesed of redundant trains, provides i l i post-accident cooling of the containment atmosphere. However, the Containment ! Spray System also provides a mechanism for removing todine from the containment ! atmosphere and therefore the time requirements for restoring an inoperable Spray j System other inoperable to OPERABLE ESF equipment. status have been maintained consistent w<th that assigned 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 i 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. This pH band minimizes ' the evolution corrosion of iodine on mechanical systemsandand minimizes the effect of chloride and caustic str components. The contained solution volume i limit includes an allowance for solution not usable because of tank discharge 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 1- perfernmence han Jeet degraded darkg de cycie. Flew med dyernsedelprussere are mornentsesa ofc 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 - - - . . - . . - . -

) Enclosure 1 to TXX 95050 4 

!' Page 5 ef 5                                                                                                    l J

TECHNICAL REQUIREMENT 2.2 l 

                                                                                                             . 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.

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4 l e i l l l l ! l l 1 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 Enclosure 2 to TXX 95050 . j 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. l 

                                                                                             ^

i i SR 3.6.6A.4 Verify each containment spray. pump's i In accordance  ; 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 valve in the flow path. actuates to the . [18] months correct position on an actual or simulated-actuation signal. , 

,                               SR 3.6.6A.6            Verify each containment spray pump starts-automatically on an actual or simulated-               [18] months 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- - , , .- 

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Enclosure 2 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 l } (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 j } cooling flow rate to.each cooling unit is t-[700]g .train gpa . ESW ] 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 I i the flow test point is greater than or~ equal to the required  ; 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. s headers, they are tested on recirculation flow. This test 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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j; ' 3 1 4 :1 _-l el 1 ATTACHMENT 3 to TXX 95050--  ! l AFFECTED TECHNICAL' SPECIFICATION PAGES : i (NUREG 1468) _ ., 5 (Pages 3/4 6-12, B 3/4 6 3) l 

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L Attachment 3 to TXX 95050 { Page 1 of 2-u 4- ! CONTAINMENT SYSTEMS 3/4.6.2 DEPRESSURIZATION AND COOLING SYSTEMS  ! 1 2 CONTAINMENT SPRAY SYSTEM 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 ' 1-suction to the containment sump. 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: 

                                                                                                                                             ~
a. - At least once per 31 days by verifying that each valve (manual,- '

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 6600 gpm at 245 psid with the pump eductor line open when tested l 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 l'

! 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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i COMANCHE PEAK - UNITS 1 AND 2 3/4 6-11 Unit 1 - Amendment No. H.32' l Unit 2 - Amendment No.18

l Attachment 3'to TXX 95050' i Page 2 of 2 i-l CONTAIMENT SYSTDts . . l 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 l 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 _ . _ _ _ _ . - .}}

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