Text

Proposed Tech Specs Providing Surveillance Requirements for Periodic Leakage Testing & Visual Insp of Control Room Emergency Filteration Sys to Assure Integrity of Portions of Sys External to Control Room
	ML19332C954
Person / Time
Site:	Fermi
Issue date:	11/16/1989
From:	; DETROIT EDISON CO.
To:	;
Shared Package
ML19332C952	List: ML19332C954;
References
	NUDOCS 8911290220
	Download: ML19332C954 (43)
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, y dated August 13, 1971 from DECO to the Director of Regulation, Assistant Attorney General.

5 and the letter from Richard W. McLaren, Antitrust Division. U. 5. Separtment of Justice, toJertram H. Schur, Associate General Counsel, Atomic Energy Counissioni dated August 16 1971.

(4) Safety / Relief Valve In-Plant Testine (Section 3.8.1. $$fR f5)*

prior to completing the startup test program. DECO shall per.

form a series of in-plant tests of the safety / relief valves

($RVs). The acceptance criteria for these tests are contained

in Section 2.13.9, *5AV Load Assessment by In-plant Tests

of

WUREG 0661, *NRC Acceptance Criteria for the Mark 1 Containment Long-Tem Program.'s The resvits of these tests shall be reported ;

to the NRC staff within six months of completing this test ,

9eries. ,

Su1eression Pool Temperature Measurements (Section 3.8.1.

(5)

.E.5. W ,

DECO shall secomplish during the first fuel cycle, all the

.- tasks described in its letter dated March 6.1985. regarding ,

the series o' SRV tests which will confim its methodology for measuring the suppression pool bulk temperature.

(6) Environmental Qualification (Section 3.11. $$ER fS)-

No later than November 30. 1985. Deco shall environmentally ,

qualify all electrical equipment according to the provisions7 of to CFR 50.49.

(7)

CvM Room Habitability (Section 6.4.1.M6) &/,c.M L . ,,

refueling outage. DICo prior to star following the fir staff that potential e to the shall provide ass those portions of the control contamination pathways -

room air-conditioning ich are external to the con-have a nificant adverse impact trol room zone will bility, or propose a technical on control room ich provides for pert c leakage testing .

. , specificatioe integrity of those enterna rtions of the to assure air-conditioning system. <

contro

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i l notation following the title of many license cdhditions

The parenthet cadenotes the section of the Safety Evaluation Report (SER) and/o supplements wherein the license condition is discussed.

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PLANT SYSTEMS V

k SURVEILL w r iisj! L ,,ig' 4.7.2fThe conteel mesa emergencyfiltretten 1 te m rated OPEAABLE:..

,. that.ths.sentre3 Jees. air i .

F a. At least ence per at hourst. sert .g*F.

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.. v.hteeperstart its less then eriequal'

..: " . . ;.s rtc *' Atiesst ence per 31*% en s' 5fA0GERED TEST SA$!$ by flow initiating through

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fan e$eration free the control room, and establishi that the i the NEPA filters and chercoal adserhers and verifyi l systemoperatesforatleast10hourswIththeassocatedemergency askap inlet air heater OPERABLE.

c. At least once per 18 aanths or (1) after any structural maintenance or (t) following on the NEPA filter er abattaal adsottier housingsorehemicalreleaseinaqr -

painting, esanunicating fire,ith w the_ system ty:

r a

1. Verifying ehet the systen satisfies the in-place penetration .

" c* testing actsptance criteria of less than 1.5 and uses the test .

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.. . procedure idance in Regulatory Posittens C.5.a. C.S.c. and ,

C.S.d of 1'atory evide 1.12. Revision 2. March 1978, while sperating system et a flow rete of 1800 cfm + 15 through the L

ankog filter end.3000.cfat 35 through the recirculation filter.

. 2. Verifying within 31 days after removal that a labe.-story analysis of a sentative carbon sample attained in a ulatory Position C.6.b of Regulatory Guide s, accordance with cch 1978 seats the laboratory testing

( 1.52. Revision 2 crneria of Regulatory Position C.6.a of Regulatory Guide 1.51,

,' Revision 2. March 1978, for a methyl iodido penetration of less than 1. 5 , and ;-

3. Verifying a system flow rate of 3000 cfm + 1 5 during systes Aperation when tested ta accordance with INSI.N510-1980.

d. After eve 720 hours0.00833 days 0.2 hours 0.00119 weeks 2.7396e-4 months of charcoal adsetter operation by verifying s after. removal that a laboratory analysis of a repre- .

1 within 31 :

santative ca n sample obtained in accordance with tegulatory -

Position C.6.b of Regulatory Guide 1.52. Revision 2, March 1978, l

1-seets the laboratory testing criteria of Regulatory Position C.6.a of Regulatory Guide 1.52. Revision 2. March 1978, for a methyl iodide penetration of less than 1. E.

e. At least once per la months by:

1'. Verifying that the pressure drop across the recirculation train and across the askeup train combined HEPA filters and charcoal adsorber banks is less than 8 inches and 6 inches water gauge

- respectively while operating the system at a flow rate of

.* 3000 cfm + 10K through the recirculation ft1ter train and 1800 cfm i igK through the askaup filter train. .

2. Verifying that the systen will automatically switch to the recir-culation mode of operation on each of the below actuation test I signals and verifying that on any one of the below recirculation mode actuation test signals, the system automatically switches g to the recirculation mode of operation, the isolation valves

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close within 5 seconds and the control room is maintained at a FERMI - WIT 2 3/4 7-9

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g . EsaILL=E asaultsuENTS (Cont inued) sitive pressure of et least 0.125 inch water gauge relative the outside steosphere during systes operation at a flow 1 L

,1 rate:1ess than er equal to 1800 eft through the emergency g enkeg air filter ;

Centeel center inlet radiatten monitor.

a b Reactor Building ventilation sahaust radiation monitor n c Fuel pool ventiTation exhaust radiation monitor.

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,*: .. d Low reactor unter level. .

e 'Nigh drywell pressure.

L 3.- the system Verifying avtamatir:that on the chlorine ally owitches mode actuation to the chlorine signal, ion, the mode of operat isolation valves close within 4 seconds, and a minimum of 1200 cfh emergency recirculation is established.

4. Veri that'each of the ses gency askeup inlet air heaters dissi 12.0 ~+ 2.0 W when tested in accordance with ANSI N510- .

f. After each lete er partial replacement of a train HEPA filter bank by verf ng that the train (EPA filter bank satisfies the inplace penetration and bypass leakage testing acceptance criteria .

of less than 1.5 in accordance with ANSI N510-1980 while operating

" the system at a flew rate of 1800 cfm + 10K for the askaup train and 3000 cfm i 15 for the recirculatGn train.

g. After each late or partial replacement of a train charcoal adsorber bank verify that the train charcoal adsorber bank satisfies ,"

the i lace po ration and bypass leakage testing _ acceptance criteria of less than 1.0K in accordance with ANSI M510-1980 for a halogenated tydrocarbon refrigerant test gas while operating the systen at a flow rate of 1800 cfm + 10K for the askeup train andi3000 cfm t 10K for the recirculation"~ train.

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3/4 7-10 Amendment No. 7 FERMI - UNIT 2

. i INSERT PAGE 3/4 7-10 4.7.2.1

h. At least once per 36 months by verifying that the sections of Control Room Emergency Filtration System duct listed in Table 4.7.2.1-1, when leak tested at the test corditions stated in Table 4.7.2.1-1 in accordance with ANSI N510-1980 exhibit inleakage less than the~ acceptance eriteria lista3 in Table 4.7.2.1-1 for the associated test pressure.

4.7.2.2 The portions of the Control Roan Emergency Filtration System duct accessible during normal operation, listed in Table 4.7.2.1-1, shall be visually inspected at least once per 366 dayc for cracking, debonding, or other abnormal degradation of the applied silicone sealant.

Any such cracking, debonding, or other abnormal.

degradaMon shall be r@orted in accordance with Specification 6.9.2 within 14 days in a Special Report describing the findings and giving the interded course of action, including evaluation of and justification for continued plant operation.

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TABLE 4.7.2.1-1

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CONTROL ROOM EMERGENCY Fit.TRATION SYSTEM DUCT LEAK TESTING SURVEILLANCE REQUIREMENTS.

4 DUCTS

1. NORMAL-INTAKE BETWEEN DAMPER T4100F042 AND THE CONTROL ROOM WALL (PENETRATION V-430)

2. NORMAL EXHAUST BETWEEN DAMPER T4100F044 AND THE CONTROL ROOM WALL (PENETRATION V-429)

3. DISCHARGE OF RECIRCULATION FANS T4100C047, 48 BETWEEN THE DISCHARGE FLANGES ON FILTER TRAIN T4100 dol 6 AND THE STH FLOOR CCHVAC EQU1PMENT ROOM WALL (PENETRATION v-SO48)'

4. DIVISION 11 SUPPLY PLENUM BETWEEN THE CONTROL ROOM WALL (PENETRATION V-431) AND THE 4TH FLOOR AUX. BUILDING CEILING (PENETRATION V-9014)

Test Pressure at or Test Pressure at or More more Megative than Megdtive than Mantmum Ma n t enum Nega t ive Nela,tve Pressure Empacted Pressure Espected For Eacn Specific Duct For Each Specific Dur 'ng Ope. etion with a Duct During Normal Single Dampee Faifure System operation - _ = ---

11 34 ACCEPTANCE CRITERIA - CUMULATIVE TOTAL FOR ALL 4 DUCTS (SCFM)

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1EHNICAL EPICIFICATION CHANGES FOR M REFERENCE 3 PR@OSAL 4

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. 8.7 3.lThe centrol reen' emergency filtration systes shall he demonstrate At least enos per.12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months by verAfy that the sentrol reos air q

a. .

temperature is less than er equal to b.- At least enos per 31 days by:

1.

Initiattag ihn operation from the sentrol room with each subsystes, establishing flew threegh the EPA flaters and sharcoal adsorbers, an l

2. Verifying flow threegh the E PA filters and sharcoal adsorbers for at!

least 10 hours1.157407e-4 days 0.00278 hours 1.653439e-5 weeks 3.805e-6 months with the assootsted energency ankaup talet air heater )

OrgRABLg.

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! o. At least enee per 18 months by:

1. Verifying that both the recirculation and emergency askeup air filter trains satiety the in-plaos penetration testing a l r.:::i=iii guidanoe in Regulatory Positione C.5.a. C.5.o, and l Regulatory Guide 1.52, Revision 2, alarah 1978, while operating th t-systes at a flow rate of 1800 aft + 105 through the enkeup filte i 3000 oft g 105 through the recircuIntion filter.

2. Verifying within 31 days after removal that a laboratory analysis o .

representative carbon sample obtained from both the rectroula

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energency askeup air filter trains, in accordance the laboratory testing criteria of Regulatory Position C.6.a of Regulatory Guide 1.52, Revision 2. Isarch 1978, for a methyl so penetration of less than 1.05, assuming a filter efficiency of 95 3 Verifying s' system flow rate of 3000 eft + 105, accordance with ANSI N510-1980.

4. Verifying that the pressure drop across the recirculation and

. emergency askeup air filter trains aosbined EgPA filters and ch

.adsorber banks is less than 8 inches and 6 inches unter gauge respectively shile operating the system at a fl ~

the neergency askeup air filter train.

5 Verifying that each sehsystem will autoestion11y switch to the recirculation mode of operation on each of t select logic shift to the rectroulation mode:

3/4 7-9 FERNI - UNIT 2 ,

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B MT 523 FENS Egyrt" "' souvil-d (u,mn m-A a) Centrol osater talet radiation sonitor.

e b) fuel pool ventilation ashaust radiatise annitor.

L e) ' Lau remotor unter level. l l d)' Righ dryuell pressure.

6. Verifying that open the receipt of poeirculation mode actuation test l signals, the systes automatically switches to the reoirculation mode !

'of operation, the isolation valves elaos within 5 seconds and the g -

eentrol room is asistained at a positive pressure of at least 0.125 inch unter gauge relative to the outside staesphere during system operation at a flow rate less than er equal to 1800 eft through the emergency ankaup air filter. I g,

7. Verifying that on the oblorine mode note ttua signal, the systes-automattoally critohes to the chloriae sede of operation, the normal intake and ashaust isolation dampers eloos within 4 seconds and a

minimum of 1800 ett emergency recirculation flow is established.

Also, the emergency intake isolation dampers shall be functionally tested to eless on a ohlerine actuation signal.

l Verifying that each of the energency askeup talet ai l

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After every T20 hours of charcoal adsorber operation by verifying within 31 days after removal that a laboratory analysis of a representative carbon sample obtained in accordance with Angulatory Position C.6.b of Regulato Guide 152, movision 2, unroh 1978, asets the laboratory testing criteria of Regulatory Position C.6.a of Regulatory Guide 1.52, movision 2. Marc for a methyl todido penetration of less than 1.05, assuming a filter effletecoy of 955 j .

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( g. After (1) any structural maintenance on the E PA filter or charcoal adsorber housings, or (2) following painting, fire, or eheatoal release in any ventilation sehe essaunloating with the systen by:

1. Verifying that both the peoirculation and emergen L 1ess than 1.05, assains a filter effiotency of 955, and uses the test

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procedure guidanoe in Regulatory Positione C.5.s, C.5.o, and c Regulatory Guide 1 52i Revision 2, March 197 3000 ofs 3 105 through the roeirouIstion filter.

FERMI - UNIT 2 3/4 7-10

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3.. Der e13.s 31 days after 'semoval that a sentrate of a ;

supresca tin aerhen semple antatass from tem me him and u

energeasy ashew air mter temias, la essertense with tory Gelde Revielen 3, 1978 feettien C.6.6 et feettien C.6.a of, moete the asherstarr eri sa of l angulsteryenleet , aevision a, , fur a methrt lessee t penetsetten of asse than 105, ensning a meer effieleser of 955 105,eart 3 Derti:t a,speles flee este of 300 of esseresses sie

- e es. en 4381 gsten ta .e e h liaties .o. age re ..

m 1900.

t of a testa EPA meer bank by

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- After eneb eseptete er partial serifylag that the trata EPA m task entisfies the teplass penetration ,

and typase asekage teetles esseptenes eriteria of asse then 1.05, eneming en assorber offistener of 955, la asesresase with aES m o tge0 shite i i

eparettag the erstem at a flew rate of 1000 era g 105 fler tem esbesp train L l and 3000 eft g 105 for the postreulation trata. 1

- k , g. After each eenplete er part$al repleesment of a testa charesal adsorber bank se .

by serifying that ten trata sharesal edeerber task entisfies the )

genstration and tyynes leakaae testies assoptease criteria of 3ese l 1.05, eneming en assorber ettistency of 955, la essereense eith AESI 5551980 ror a bassementes hydrocarten refraserent test one sh11e sperating the system at a fleu este of 1000 aft eft g 105 ter the restreulation train.g 105 ihr the embesp trata es J i

l 4.7.2.2 The accessible portions of the Control Roczn Energency l Filtration System duct accessible during normal operation, listed in T ble 4.7.2.1-1, shall be visually J

. inspected at least once per 366 days for cra: king, l debonding, or other abnormal degra5ation of the applied :

silicone sealant. Any such crmking, debording, or other (

abnormal degradation shall be r@orted in accordance with '

Specification 6.9.2 within 14 days in a Special D: port describing the findings and giving the intended course of l action, including evaluation of and justification for continued plant operation.

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2 INSERP PAGC 3/4 7-10 (For Reference 3 proposal) -

.b 4.7.2.1

d. At least once every 36 scaths by verifying that the sections of Control Room Buergency Filtration System duct listed in Table 4.7.2.1-1, when leak tested at the test conditions stated in Table 4.7.2.1-1 in scordance with ANSI N510-1980 exhibit inlaakage less than the acceptance criteria listed in Table 4.7.2.1-1 for the associated test pressure.

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w TABLE 4.7.2.1-1 CONTROL ROOM EssERGENCY FILTRATION SYSTEM DUCT LEAK TESTING SURVEILLANCE REQUIREMENTS 4

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DUCTS -

1. NORMAL INTAKE BETWEEN DAMPER T4100FO42 AND THE CONTROL ROOM WALL (PENETRATION V-430).

2. NORMAL EXHAUST SETWEEN DA00PER T4100F044 A*eD THE 4 CONTROL ROOM WALL (PENETRATION V-429)

3. DISCHARGE OF RECIRCULATION FANS T4100C047. 48 SETwEEN THE DISCHARGE FLANGES ON FILTER TRAIN T41000016 AND THE STH FLOOR CCHVAC EQUIPtBENT ROOM WALL (PEMETRATION V-5048)

4. DIVISION II SUPPLY PLENute BETWEEN THE CONTROL

) roots WALL (PEMETRATION V-431) AND THE 4TH ..

FLOOR AUX. SUILDING CFILING (PEMETRATION V-9014) .

-- ~- - - --

Test Pressure et or Test Pressure et or Geore teore Noget tve than . Negative then IBezimum Glantmum Nogettve Nogettve Pressure Espected Pressure Espected For Each Specific Duct During Operetton with a :

For Each Specific Doct During Normal Single Demper Failure System Operetton -

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', ACCEPTANCE CRITERIA - CUtBULATIVE TOTAL FOR ALL 4 DUCTS (SCFM) --- - --

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9 ATISOMEhT 1 TEST PRESSURE CAICUIATION k

Excerpted fro t Termi 2 Design Calculation No. 5103, N Duct p

' Bypass Imakage - reo-1," dated October 24, 1989 a

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,800 CLEAR GENERATNDN 848040RANDUM File 0801.05 Date: November 3.1989 NE-PJ-89-0735 .

To: F6te From: J. W. Contoni. Supervisor Mechenical & Fluid Syste Plant Engineering / Nuclear Engineering

Subject:

Seels for CCNVAC Unf66tered typsee inleekege Critorie This memo is written to document Fermi 2 design basis for the CCMVAC unfiltered bypass inleskoge critorie. This memo will become en ettschment to DC 5107,

Control Room D

.for Proposed Tech Spec Change to typass Leakege.*

Written By: A. K. Lim

Asti d j Approved by: A JT Walker 0 rol Supervisor PI t Engineering / Nuclear Engineering Approved by:

E. V. Cranston General Director Nuclear Engineering I

l l

AKL/tr Attachment ,

cc: R. Seeudry

+

L Coodman -

D.Jex 9

l i

?

._ .,- - . - . . . . . - . _ _ . . . . . _ . - - . _ _ _ _ .-___-___________m - - - . . . _ _ . . . _ - , _ ~ _ _ _ _ _ - . _ _ _ - .

8 M/O :

P 49 0735

. $$evember 3,1989 hoe 2 :

j repelr duct leeks. To complete future testing in a pragmatic menner and yet to still '

stay well below the NRC limit of 30 rem to the thyrold, the following new test '

acceptance limit are establish- l lil. New Test Acceptance Limit :

f l DAMPER NORMAL FAILURE (Remaining SOURCE ,

(30 Min.) 30 Dev) l Duct Leskoge L 34 CFM 11 CFM 1 1 I' Doors (DC 5108) L 35 CFM 12 CFM TOTAL J

6 Based on the above, the calculated thyroid dose to the control room personnel is ?

increased from 16,1 rem to about 1g rem (DC 5107). This higher value is deemed occeptable because: i It is still well below the NRC limit of 30 rom thyroid by a factor of safety '

1.)

greater than 1.5.

, l Allows mergin for pragmatic leakege through the test plug without 2.)

compromising the ability to sense duct system leakage. Test plus leakage has .

no impact on operator dose.

The ducts are located in the Auxiliary Building and therefore are shielded from L 3.)

I the outside ambient environment. t 4.)

Silicone seslant will be inspected periodically to insure silicone seslant are in good condition.

t AKL/tr e

. _ _ _ - . _ ., - , , , , - ,-_----.r,.. .. + . . r ._., - , , - - - .-- ,- ,.-w_,. -..---,y.-----..-,,.,..--,..re,~-. , , - + - - - -

w - .

L p. . . .

A f. J '/ 4 :7 N, NO M/n

' htschment NE-pJ-88-0735 Novemtier 3,1989 l page 1 l p.;re for CCMVAC Untittered Sveses enleeksee I l

l

1. Current tests j The current total unfiltered bypass inleakage to the control room is assume I CFM. This would result in a calculated post-LOCA dose of 16.1 rem to the th ;

over 30 days. The NRC accepted this as suitable compliance with 4.D.C.19 i: ,

SER Amendment 5. In order to account for damper f ;

exceeded (D.C. 5105). .

l 1.) Operator intervention is assumed to occur after 30 m i damper in the operating division, I

Three (3) CFM out of the total 10 CFM infitteration is reserved for by-pass 2.) inleakage through doors with vestibules (NE-PJ-89-0647).

3). The ellowable leakage reserved for the ducts is 17

11. Test Data ,

were tested during RF0t ont ;t 4

The nogetive-pressureA summary section ofofthe ductworktest results is as follows: ;

are documented in DC 5103 ,

l CCHVAC BYPASS LEAKAGE (CFM) l

\

l AS LEFT '

AS FOUND DAMPER l SOURCE DAMPER FAILURE NORMAL l '

FAILURE NORMAL (30 Day)

(30 Day) (30 Min.)

(30 Min.)

5.86 l 6.20 17.21 19.57 Ducts 3.00 3.00 3.00 3.00 Doors .

l (Ref 4) 8 86 g.20 l 2021 l .

l TOTAL l 22.57 _ .._ l 1 l l

l _ _

The *as left" leakages are programatically the be rigorous methods used to perform the test. A smallleakage through (i.e.,1 CFM) will cause the current test criteria to be exceeded. d not T test result extraordinary numbers of man-hours were spent to seal tr.st plu s

I

^ ' ^ - - - - - - - _ _ - - . _ '"*-*he*. ,__,y,

ML19332C954

Text

Subject:

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