ML20151R853

Proposed Tech Specs Re Hydrogen Purge,Emergency Ventilation & Control Room Emergency Ventilation Sys

ML20151R853
Person / Time
Site:	Davis Besse
Issue date:	08/01/1988
From:	TOLEDO EDISON CO.
To:
Shared Package
ML20151R816	List: ML20151R811 ML20151R853 ML20151R940
References
NUDOCS 8808120321
Download: ML20151R853 (10)

Text

Docket'No. 50-366 License No. NPF-3 Serial No. 1694

. CONTAINMENT SYSTEMS HYOR0 GEN PURGE SYSTEM LIMITING CONDITION FOR OPERATION 3.6.4.4 A containment hydrogen purge system shall be OPERABLE.

APPLICABILITY: MODES I and 2.

ACTION:

With the containment hydrogen purge system inoperable, restore the hydrogen purge system to OPERABLE status within 30 days or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

SURVEILLANCE REQUIREMENTS 4.6.4.4 The hydrogen purge system shall be demonstrated OPERABLE:

1

a. At least once per 18 months by initiating flow through the HEPA filters and charcoal adsorbers and verifying that the system operates for at least 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br /> with the heaters on. )

b. At least once per 18 months or (1) af ter any structural main- l tenance on the HEPA filter or charcoal adsorber housings, or )

(2) following painting, fire or chemical release in any venti-lation zone cornnunicating with_ttle system by: __

Cele w wp_ (panchaik awd._% r*5M=hM"

1. Verifying that th TYstem satisfies the l -place 4 testing acceptanc terialandusesthetestproceduref

• f 9 15 g g

• ef Regulatory Positions C.S.a. C.S.c and C.S.d of Regula pW'u 5"

tory Guide 1.52, Revision 1, J"ly 19?' nd the system flow rate is 100 cfm t10g anA i,w igg

2. Verifying,within 31 days af ter removal, that a laboratory analysis of a representative carbon sample obtained in accordar.ce with Regulatory Position C.6.b of Regulatory

'"'" '" meets the laboratory Q,=ha lg;ggtesting

- uuidecriteria 1.52,ofRevision"kegulatory Position C.6.a 1of R .

tory Guide 1.52, Revision 1, July u(19W s Ww2, IMateA

1. . iM8, fd i _ _ .

A metl yt iodiAa "Thf frc~ !5S ~ pest-Icaming swccpfe.wstfa%w e rcdium tcmpere(suce shell be 00*C for

- Test S.b of Table 2, Regulatory Guide 1.52, Revision 1, July 1975.

8808120321 880801 PDR ADOCK 05000346 P PDC DAVIS-BESSE, UNIT 1 j~

3/4 6-26 Amendment No.

Jocket'No. 50 346 License No. NPF-3 Serial No. 1494 Attachment 3 CONTAINMENT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

c. Af ter every 720 hours0.00833 days <br />0.2 hours <br />0.00119 weeks <br />2.7396e-4 months <br /> of charcoal adsorber operation by verify-ing,within 31 days after reraoval,that a laboratory analysis of a representative carbon sample obtained in accordance with Regulatory 1

Position C.6.b of Regulatory Guide 1.52 Revision

>p ' 2,%mg7 , M1y 1976g meets the laboratory testing criteria of Regula-( s tory Position C.6.a of T.egulatory Guide 1.52, Revision 1, h!y

-MMg t w s. 2, ,- M ard. Wis, f et a b 4Rf t= A: A4- feedfabiw *( hst

[- d. At least(once per 18 months by:

1. Verifying that the pressure drop across the combined HEPA

.fJ d filters and charcoal adsorber banks is 25 inches Water M Gauge while operating the system at a flow rate of 100 cfm l j j y G + 10%.

~

W l s Jj 2. Verifying that the heaters dissipate 2.0 + 0.4 kw L I 7 when tested in accordance with ANSI N510-T9Mt- liso- l l

$ e. _ Af ter each comple_te or partial replacement of a HEPA filter 4

1

,f y

' bank,by verifying that thP(Z"A fil,ter Mnk: rgev: 0^t of

-th: OOP 20^ they Orc tested f j 3 NS10-MM while operat.ing the system at a_ flow rate of in ;1:ce= in accordance w;ith ANS!

160 c fm 1 0..

U i q,o 9, a 2>of t.sg ,,,,,,g

f. _Af ter each complete or partial replacement of a charcoal )

, d

• y d

'adsorber bankz by verifying that thRcharce:1 :d:orbert r e te t- "f y995 Of : 50.0gensted hydre: rbon refrigerer.: te:t 9 : when

.5 hey cr: tested in place-in accordance with ANSI NSIO-MM--

-" [

u while operating the system at a flow rate of 100 cfm + 10% g  :

,2 iiso Sc . ka dect %dese.a6 P'qvipmt M$ h 3 4

%C # -

A- c. b up hyst w doAs f 8.1 lke k - NA(-*- N*

i Q m la.g hsh acLey b c.4- c 'Mfia u

dI' ss p 1% j t

b DAVIS-dESSE. UNIT I 3/4 6-27 Amendment No.

ocke't 'No. 50-346 License No. NPF-3 Serial No. 1494 I

CONTAINMENT SYSTEMS l l

3/4.6.5 SHIELD BUILDING EMERGENCY VENTILATION SYSTEM LIMITING CONDITION FOR OPERATION 3.6.5.1 Two independent emergency ventilation systems shall be OPERABLE.

APPLl'ABillTY: MODES 1, 2, 3 and 4.

ACTION:

With one emergency ventilation system inoperable, restore the inoperable system to OPERABLE status within 7 days or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

i 1

SURVEILLANCE REQUIREMENTS 4.6.5.1 Each emergency ventilation system shall be demonstrated OPERABLE:

a.

At least once per 31 days on a STAGGERED TEST BASIS by initiating from the control room, flow through the HEPA filters and charcoal adsorbers and verifying that the system operates for at least 15 minutes.

b.

At least once per 18 months or (1) after any structural main-te6ance on the HEPA filter or charcoal adsorber housings, or (2) following painting, fire or chemical release in any venti-lation zone communicating with the system by:

1.

crifying that with the ;ystem oper& ting at ; flew rete

-ef 8,000-c-fm-t40! :nd exhaust 4ng through- the l CPA

-+Rters-and-charcoal adscrbcrs,- the total typas: ficw of

-the syster to the-facility vent, i:  : 1% when the ystem tested by adMtting-00P et the system intak;. -

DAVIS-BESSE, UNIT 1 3/4 6-28 Amendemnt No.

l l

Docket No. 50-346 L'icense No. NPF-3 i Serial No. 1494 L CHANGES PREVIOUSLY - ._ _ I Attachment 3 PROPOSED 8Y LEUER ph_g22____. Dateg2/g CONTAINMENT SYSTEMS o SURVEILLANCE REQUIREMENTS (Continued) ,

h"E9*h'M_Q hMn r ~

I/. Verifying thatMsystm satisfies the in-plac testing d k"b 4 acceptance criteriaJand uses the test procedu

~

Regulatory Positions C.5.a. C.S.c and c.5.d of Regula-(~

tory Guide 1.52. Revision-1. bly 197 % nd the system l flow rate is 8,000 cfm ilot) gg 2 f. Verifying,within 31 days after reoval,that a laboratory analysis of a representative carbon sample obtained in accordance with Regulatory Position C.6.b of Regulatory

' ' Guide 1.52. Revision uly 1^7 fry steets the laboratory l testing criteria of egulator tory Guide 1.52, Revision -1. &ly y Position 1976,xC.6.a 2 of Regula-

= vetAf ichde. U netrabb .4 4n f 66, *l et. ; we n3M 3 /. Verifying a system flow rate of 8,000 cfm 410% during system operation when tested in accoreance~with ANh!

M510-1975y 198o. l

c. After every 720 hours0.00833 days <br />0.2 hours <br />0.00119 weeks <br />2.7396e-4 months <br /> of charcoal adsorber operation,by verify-ing,within 31 days after removalf that a laboratory analysis of a representative carbon sample obtained in accordance with Regulatory Position C.6.b of Regulatory Guide 1.52 Revision 2,%ecpW1, Aly 1975ymeets the laboratory testing criteria of Regula-tory Position C.6.a of Regulatory Guide 1.52, Revision -1r,3w'Ly-

--197 dess5.,k t% 2, %cA iM S, Oc ^ Metkp bek pwet.ed*% 4 d.

l'[..

At least once per 18 renths by:

1. Verifying that the pressure drop across the combined HEPA filters and charcoal adsorber banks is 6 inches idater Gauge wMle operating the systs at a f(low] rate l of 8 efa i 105; gfg

2. Verifying that the system starts automatically on any containment isolation test signal.-**- 1 s

3. Verifying that the filter cooling bypass valves can be ranually opened.* Q s ^a __ ~ ' l SWrsentetNc si.ples of-v:cd Oct4vated 03% fm the .95 skal'-

p2ss tM leMeetery test ;4:en M Table 3 for er activated-carboa-bed depth ef ? inches (i.e. , the M 2- i.^ch filter b^ds- fe seri-5

-shell ha testM p=* Test 5.5 in T4ble-2-st-4-relative-humidity-of-

--7&for--4-methyl-todid penetts tie

• of--less--th.ee !!). De pre -and-

-post-loading swasp-sedie te ?:e+ tere-shell bc BO'C-foHeet 5.b cf

--Table 2, Regu14tery hid: 5.52, Reds 4cn 1, Aly 194--

ev% ~ -

v m

• • E+;hteen ccath wr,rth.. ; test dise-4+SrA 1982 del 4)ed-wat41 vuwp.

y DAVIS.BESSE, tW T 1 3/4 6-29 Amendnent No. 43

l .

ocket' No. 50-346 License No. NPF-3 Serial No. 1494 s Attach =ent 3 CONTAINMENT SYSTEMS 1

SURVEILLANCE RIQUlitIMENTS (Continued) wya WS)

4. Verifying that each system produces a negative pressure oltI)0.25 incheu W.G. in the annulus within 4 seconds l ,

afWr the fan t.;tains a flow rate of 8000 cfm + 101. l This test is hs be performed with the flow patE l

$ established prior to starting the EYS fan, and the d

• \ other dampers associated with the negative pressure i

boundary closed.

ff [, - - - -

/ e. After each complete or partial replacement of a HEPA filter f ,[e p

( bangy verifying that egCPA filter b;.d; i wv; : 00% ;f

-the ... ..... ...y ... ... d ia-p?ece in accordance Irith ANSI )

f M51049M wh e operating the system at a flow rate of  !

'j 0# CN 1 @*

19$o M a Tor test o.e.tes[

' j

{

g

, f. After each complete or partial replacement of a charcoal  !

-u

}' d

( adsorber 00 Of  :

bank4 by verifying that the'*"-a" "-- " - ~- "-

w W [ y?.:r.2:y:r:50.09:r.a ted hyd- ::r" Mf-f gera .t test go:-

tectM da-plece in accordance with ANSI N510-M76-  :

while operating the system at a flow rate of 8000 cfm i 101.

8 Y \

{j t b i m 4* o WW @wL.,, tyrt puot tut @

$ Y 4

g d

cwy p a .g u u L-d pwm

,s j i 4%k% weg u p a_ca.A

' +sd ef An.cs k l *f.

<${ ~ '

Ihar; p

\r H i bb DAVIS-BESSE, UNIT 1 3/4 6-30 knendment No. 3

. , . , _ . - - _ _ . ..._-,._....-c_._ ~ - - , ,_--..___._..-..m..

Docket'No. 50-346 License No. NPF-3 Serial No. 1494 Attachment 3 PLANT SYSTEMS 3/4.7.6 CONTROL ROOM EMERGENCY VENTILATION SYSTEM LIMITING CONDITION FOR OPERATION 3.7.6.1 Two independent control room emergency ventilation systems shall be OPERABLE.

APPLICABILITY: N0 DES 1, 2, 3 and 4.

A,CTION:

With one control room emergency ventilation system inoperable, restore the Inoperable system to OPERABLE status within 7 days or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

/

SURVEILLANCE REQUIREMENTS 4.7.6.1 Each control room emergency ventilation system shall be demonstrated OPERABLE: p yg, g

a. At least once per 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> by verifying that the control room air temperature is 110*F when the control room emergency ventilation system ts operating.

b. At least once per 31 days on a STAGGERED TEST BASIS by initiating.

from the control room, flow through the HEPA filters and charcoal adsorbers and verifying that the system operates for at least 15 minutes.

c. At least once per 18 months or (1) after any structural nain-tenance on the HEPA filter or charcoal adsorber housings, or (2) following painting, fire or chemical release in any venti-lation zone communicating with the system by:

1 OAVIS-BESSE, UNIT 1 3/4 7-17 Amendment No.

. . .- . , - - . - . .a - ,. . . - -

Docket No. 50-346 License No. NPF-3 Serial No. 1494 Attachment 3 PLANT SYSTEMS l

l SURVEILLANCE REQUIREMENTS (Continued)

-1. -Verifying th:t with th: ytte Op:r: ting :: : fle 7-

-ef 3300 cfm

• 10! :nd e.xhau:tf ag thrceg5 th," MEPA <ilters__.

nd cherce:1 edserbers the tet:1 byp::: fleu cf t';

ystaa !: (

.'. .w. ,, ' t w he.a the syste !! ttd by :d-itting l

~ )),y~ , . 4 , a .g italtt'sw d k M

' -~ <

l Verifying that ;heAsystem satisfies tihe in-place testing k"k'P[H _+beceptance caiteria2and use N i guida m u, l

~ V + Regulatory Positions C.S.a. C.S.c and C.S.d of Regula-  !

tory Guide 1.52, Revision 1, July 19?SX and the _ system '

flow rate is 3300 cfm 110%; ,g g,gg 2 /. Verifying within 31 days af ter retzvalj that a laboratory analysis ,of a representative carbon sample obtained in F accordance with Regulatory Position C.6.b of Regulatory ,

l duide 1.52 Revision]l, July-19?Sy meets the laboratory M " * # I' testing criteria of, Regulatory Position C.6.a of Regula-l l

tory Guide 1.52, Revision -1, Jul" 1976.Y 1. Ma cA 191%,(.c A w.ttp i.Arde powded4m y less h I'l. ', h a.

3[ Verifying a system flow rate of 3300 cfm 10%

system operation when tested in accordance with ANSI 1 during N510-M MX l$Bo.  !

d. After every 720 hours0.00833 days <br />0.2 hours <br />0.00119 weeks <br />2.7396e-4 months <br /> of charcoal adsorber operation by verify- l ing,withili 31 days after removalsthat a laboratory analysis of a representative carbon sample obtained in accordance with Regulatory Position C.6.b of Regulatory Guide 1.52, Revision 2, Marck 07g

--1, July 1976g meets the laboratory testing criteria of Regula-tory Position C.6.a of Regulatory Guide 1.52, Revision-1, July

-MMY 7., 4td. I'l'IS, fo a wttp l o h da. e n E. tad im e4 bt h lef..

e. At least once per 18 months by:

1. Verifying that the pressure drop across the combined HEPA filters and charcoal adsorber banks ig G 4.4 inches water l Gauge while operating the system at a[ flow rate of 3300 cfm 1

2.

i Verifying that the control room normal ventilation system fess th is isolated by a SFAS test signal, Control Room Ventilation Air intake Chlorine Concentration - High test signal, and a Station Vent Radiation High test signal. Q I'$Y;Y[i/ post 4eading sweep cdium temperature shell beb0*C- for=

l Y^e+ C h ^' T A1 4-?. Regulatory Guide 1.52, 9evision 1, July 19%--

I o

DAVIS-BESSE, UNIT 1 3/4 7-18 Amendment No.

i Dockef No. 50-346 l License No. NPF-3 Serial No. 1494 Attachment 3 PLANT SYSTEMS l

SURVEILLANCE REQUIREMENTS (Continued) n l

3. Verify that the m I 1

300 cfm i 10% whe,ake up flow of the room system is I n supplying the control with outside air. I 7Y i l

f.

After each comp _lete or partial replacement of a HEPA filter i

1. ^^ ~ e f- l bankyy verifyid that thel 40,"A pl:cs in filter benk:;wre;, eve ;ith A

{*p j j f the .J uhen they Orc te'ted-in NS10-MM while operating the system at a flow rate of 3300 accordance cfm i 10% o a Doe test a t

-o

g. After each complete or partia re lacernent of a charcoal j 0 adsorber bank by verifying that thetha ce!! ed'Orber: Pr0"O 4$ l

--005 Of ; h:10genated hydrocerMr refrigerent test get "ea.

-dhey crc-test +4M.se in accordance with ANSI NS10-MM  ;

g D a while operating the system at a flow rate of 3300 cfm i 10%.

i Q }.4 -

198o m

a Mp W Q ecs W t=fri pra d leit 1

8

) .d 7 c).comap g b Aal,sp e.t kbth Mlf^

u h st N g Accg b a CWtati^

t

\j- h of bi3 b I T=

p r

)1

'n a

5 tb j $

>Wv 4 -

r w

DAVIS-BESSE, UNIT 1 3/4 7-19 Amendment No.

Dockeh No. 50-346 License No. NPF-3 Serial No. 1494  !

Attachment 3 l

THIS PAGE PROVIDED ,

CONTAINMENT SYSTEMS '

BASES 3/4.6.4 COMBUSTISLE GAS CONTROL The OPERA 8ILITY of the Hydrogen Analyzers, Containment Hydrogen Dilution System and Hydrogen Purge System ensures that this equipment l willbeavailabletomaintainthemaximumhydrogenconcentration within the containment vessel at or 'below three volume percent following a LOCA.  !

The two redundant Hydrogen Analyzers detennine the content of hydro-gen within the containment vessel. ,

The Containment Hydrogen Dilution (CHD) System consists of tm full capacity, redundant, rotary, positive displacement type blowers to supply air to the containment. The CHO System controls the hydrogen concentra-tion by the addition of air to the containment vessel, resulting in a pressurization of the containment and suppression of the hydrogen volume fraction.

l The Containment Hydrogen Purge System Filter Unit functions as a backup to the CHD System and is designed to release air from the con-tainment atmosphere through a HEPA filter and charcoal filter prior to discharge to the station vent.

3/4.6.5 SHIELO BUILDING 3/4.6.5.1 EHERGENCY VENT 1LATION SYSTEM The OPERABILITY of the emergency ven.tilation systems ensures that containment vessel leakage occurring during LOCA conditions into the annulus will be filtered through the HEPA filters and charcoal adsorber trains prior to discharge to the atmosphere. This requirement is neces-sary to meet the assumptions used in the safety analyses and limit the site boundary radiation doses to within the limits of 10 CFR 100 during LOCA conditions.

DAVIS-BESSE, UNIT 1 8 3/4 6-4 Amendment No. 66

, _ .~ ---

Docket' . 50-346

~

a License No. NPF-3 Serial No. 1494 ,Q \. g h g< ^gp[ jf4y)Q

.g Attacheent 3 54 P 3D Ea PLANT SYSTEMS a BASES the flow path can be established. The ability for local, manual operation is demonstrated by verifying the presence of the bandwheels for all manual valves and the presence of either handwheels or available power supply for motor operated valves.

3/4.7.2 STEAM GENERATOR PRESSURE /TD(PERAWRE LIMITATION The limitation on steam generator pressure and temperature ensures that the pressure induced stresses in thm steam generators do not exceed the maxinua allowable fracture toughness stress limits. The limitations of 110'F and 237 peig are based on a steam generator RT of 40*F and are sufficient to prevent brittle fra-ture. NDT 3/4.7.3 COMFONENT COOLING WATER SYSTEM The OPERABILITY of the cosponent cooling water systes ensures that sufficient cooling capacity is s'railable for continued operation of safety related equipment during normal and accident conditions, the redundant cooling capacity of this system, assuming a single failure, is consiscent with the assumptioes used in the safety analyses.

3/4. 7.4 SERVICE WATER SYSTEM The OPERABILITY of the service water systen ensures that sufficient cooling capacity is available for continued operation of safety related equipnent during normal and accident conditions. The redundant cooling capacity of this systes, assuaing a sf.ngle failure, is consistent with the assumptions used in the safety analyses.

3/4.7.5 ULTIMATE HEAT SINK The limitations on the ultimate heat sink level and temperature ensure that suf ficient cooling esp.scity is available to either 1) provide notial cooldovn of the facility, or 2) to sitigate the effects of accident conditions within acceptable limits.

The limitations on mininua water level and maximum temperature are based on providing a 30 day cooling vater supply to safety related equipment without exceeding their design basis temperature and is consistent with the recommendations of Regulatory Guide 1.27, "Ultimate Heat Sink for Nuclear Plants" March 1974.

3/4.7.6 CONTROL ROOM DERGENCY VENTILATION SYSTD(

The OPERABILITY of the control roca emergency ventilation system ensures that 1) the ambient air tem;.erature does not exceed the allevable temperature for continuous duty rating for the equipment and instrumentation cooled by this systen and 2) the control room vill I remain habitable for operations personnel during and following all j credible accident conditions. The OPERABILITY of this system in i conjunction with control roca design provisions is based on limiting j the radiation exposure to personnel occupying the control room to 5 ren '

or less whole body, or its equivalent. This limitation is consistent '

vith tr,s requirements of General Design Criterion 19 of Appendix "A",

10 Cy1 50. )

DAVIS-BESSE, UNIT 1 B 3/4 7-4 Amendment No.103 1

)