ML19332D334

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

ML19332D334
Person / Time
Site:	Fermi
Issue date:	11/16/1989
From:	DETROIT EDISON CO.
To:
Shared Package
ML19332D333	List: ML19332D334 NRC-89-0215, Application for Amend to License NPF-43,deleting License Condition 2.C(7) & Revising Tech Spec 3/4.7.2 to Provide Surveillance Requirements for Periodic Leakage Testing & Visual Insp of Control Room Emergency Filteration Sys
References
NUDOCS 8912010028
Download: ML19332D334 (43)

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dated Aegest 13,1971, from Deco to the Director ei Reev1stion, Assistant Attorney General.

and the letter from Richard W. McLaren, toJertramN.Schur, i

AntitrustDivisiondown.S.DepartmentofJustice,ionidatedAugust16 l U

Associate General sel. Atomic Energy Coumiss 1971.

I Safety / Relief Valve in. plant Testine (Section 3.8.1. $$tt f5)*

(4) prior to completing the startup test program, Deco shall per-form a series of in-plant tests of the safety / relief valvesT (SRVs).

in Section 2.13.9, 'ERV Load Assessment by In. plant Tests' of NUREG 0661' *NRC Acceptance Criteria for the Mark I Contal LongTermfrogram."to the NRC staff within six months of comp

'i series.

Svapression Pool Temperature Measurements (Section 3.8.1.

+

(5) u m 70)

Deco shall accomplish during the first fuel cycle, all the tasks described in its letter dated March 6,1985. regarding the series of SRV tests which will confirm its methodology for measuring the suppression pool bulk temperature.

f Environmental Ove11fication (Section 3.11. $$tR #5)

-(6)

No later than November 30, 1985 Deco shall enviro w ntally que11fy all electrical egetpment according to the provisionsT i

of 10 CFR 50.49.

CO M Room Habitability ($ection 6.4.1. M 6) pc/4.

(7) i L

prior to star following the fir peling outag Deco staff that potent I l

shall provide ass e to the i

those portions of the control contamination pathways ich are external to the con-room air-conditioning sys nificant adverse impact trol room rene will pet have a propose a technical t

l on control room itability, or specificatio ich provides for peri c leakage testing rtions of the

.e integrity of those externa to assure air-conditioning system.

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• The parenthetical notation following the title of many Itcense conditions denotes the section of the Safety Evaluation Report (SER) and/or its supplements wherein the license condition is discussed.

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k GILL *! WeilIZ-Zuis 4.7.2fThesenteelmese fittsetten shall heAssenettsted SPERAtl.E:..

a,. At least once per hours.ty. vert me.shet.ths.aentroldeas. air i

. v.P.semperstere its less then1eriequal se SPF.

y tc Atiesst ence per S1'esys en a STAGGERES TEST SA$!$ by initiating fan e$eration from the control room, and establishi flew through that the the NEPA filters and chercoal adsetters and verifyi systemoperatesforatleast10hourswIththeassocstedemergency makeup inlet air heater OPERABLE.

At hest once per It months or (1) after any structural asintenance or (2) fellowing c.

en the IEPA filter se charassi adsorter housingsorehemic4veleaseinanyw pointing, fire,ith the syd.se ty:

connunicating w Verifying that the system satisfies the in-place penretration c.

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2. r testing acceptance criteria of less than 1.0K and uses the test idence in Regulatory Positions C.5.a. C.5.c. and

. procedure I'atory Guide 1.52, Aavision 2. March 1978, while

• C.S.d of aperating system at a flew rete of 1800 cfm + 1 5 through the askee filter and.3000.sfat 25 through tem recirculation filter.

i Verifying within 31 days after removal that a laboratory i

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analysu of a representative carbon sample attained in accordance with Regulatory Position C 6.b of Regulatory Guide

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2.52. Revision 2 March 1978 meets the laboratory testing criteria of Regulatory Position C.6.a of Regulatory Guide 1.52, A('

Revision 2 March 1978, for a methyl iodido penetration of less than 1.05; and,

Verifying a system flow rate of 3000 cfm + 1 5 during systes 3.

aparation uhan tested la accordance with XNSI.N510-1980..

After every 720 hours0.00833 days <br />0.2 hours <br />0.00119 weeks <br />2.7396e-4 months <br /> ~ef charcoal adsorber operation by verifying d.

within 31 days after. removal that a laboratory analysis of a repre-sentative carbon sample obtained in accordance with Regulatory

' Position C.G.b of Regulatory Guide 1.52 Revision 2, March 1978, asets 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 1.05.

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At least once per 18 months by-Verifying that the pressure drop across the recirculation train l'.

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 systes at a flow rate o

• 105 thr'ough the makeup filter train.

Verifying that the system will automatically switch to the recir-2.

culation ande of operation on each of the below actuation test signals and verifying that on any one of the below recirculation I

mode actuation test signals, the systen automatically switches i

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 - UNIT 2 3/4 7-9

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gungryam assurasuruts 6-tinued) positive pressure of afleast 0.125 inch water seuse relative to the outside stepephere during systes operation at a flow rete less than er aquel to 1800 cfh through the emergency enkeg air filter:

ir a

Centrol center inlet radiation monitor.

b Reacter Buildine venttistion eahaust radiation eenitor c

Fuel' peel.ventilatten exhaust radiation monitor.

Lew reacter water level.

d c ;IHgh drywell pressure.

e the s;rstes Verifying that en the chlorine mode actuetten signal 3.

automatically evitches to the chlorine sede of operaI1on t w isolatten valves close 'within 4 seconds, and a minimum of 1

~ 1200 cfm emergency recirculatten is estab11shed.

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Veri that'each of the enkeup inlet air heaters dissi 12.0 ~+ 2.0 let when s

in accordance with ANS!

N510-lete er brtial replacement of a train HEPA filter f.

After each ne that train '4 EPA filter bank satisfies the bank by veri inplace penet tion and ss leakage testi acceptance criteria l

of less than 1.05 in acco ace with ANSI N51 1980 while operating l

the system at a flow rate of 1800 cfm + 1 5 for the askeup train b

and 3000 cfm i 105 for the recirculation train.

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After each late or partial replacement of a train charcoal adsorber bank veri ng that the train charcoal adsortier bank satisfies the i lace penetration and bypass leakage testing acceptance criteria of less than 1.0K in accordance with AN51 N510-1980 for a halogenated hydrocarbon refrigerant test gas while operating the systen at a flow rate of 1800 cfm + 10K for the askeup train andi3000 cfm i 105 for l

the recirculation train.

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At Icast once per 36 months by verifying that the sections of Control Boom 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 Icss than the axeptarce criteria listed in Table 4.7.2.1-1 for the associated test pressure.

4.7.2.2 The portions of the Control Roca Energency Tiltration System duct accessible during normal operation, listed in Table 4.7.2.1-1, shall be visually inopoetcd at least once per 366 days for cracking, debonding, or other abnorraal degra3ation of the applied silicone sealant.

Any such crccking, debonding, or other abnormal degradation shall be rcporto$ in accordance with Specification 6.9.2 within 14 days in a Ebecial Report describing the findings ard 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 CONTROL ROOM EMERGENCY FILTRATION SYSTEM DUCf LEAM TESTING SURVEILLANCE REQUIREMENTS DUCTS 1

NORMAL INTAME BETWEEN DAMPER T4tOOF042 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 T41000016 AND THE STH FLOOR CCHVAC EQUIPMENT ROOM WALL (PENETRATION V-SO48) 4 DIVISION II SUPPLV PLENUM BETWEEN THE CONTROL ROOM WALL (DENETRATION V-431) AND THE 4TM FLOOR AOX. SUILDING CEIcING (PEFETRATION V-9014)

Test Pressure at or Test Pressure at or More More Negative than Negative than Mastmum Ma x imur; Negat ive Negattwo Pressure Espected Pressure Espected Fee Each Specific Duct For Each Spectftc During Operation with a Duct During Normal Single Damper Falture System Operation

- -.. = =

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

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1EHNICAL WBCIFICATION CHMGES F0ft STIE w

RIMUENCE 3 PN30rAL

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ElRfp2 4 m i 1_-u 4.7 3 lthe oestrel resa'esorgener filtestian systes eksil to desenstrated CPgkA that the sentrol rose air At least enee per 12 hears by verify a.

temperatore is less than er equal to b.

At least enee por 31 enye by:

Inittatteg ihn operation fPos the sentrol reos with each subsystee, establishing fase threeWi the E PA filters and sharesal adsorbers, and 1.

the EPA filters and shaream1 adsorbers for at 2.

Verifying flow associated emergency ankaup talet air bester least 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br /> with z.

OrgRABLE.

At least enos per 18 months by:

e.

Verifying that both the rootroulatten and emersoney makeup air filter traine antisfy the in-plsee penetration testing neceptance criteria of 1.

less than 1.05, assuming a filter effioseney or 955, and uses the test precedure guidance in Angulatory Peettions C.5.a. C.5.e, and megulatory cuide 1.52, Revision 2, march 197 3000 eft g 105 through the restroulation filter.

Verifying within 31 days after removal that a laboratory analysis of representative carbon cample obtained from both the rectroulat 2.

emergency askeup air flater trains, in socordanc l

the laboratory testing criteria of Regulatory Pesition C.6.a of Regulatory Guide 1 52, Revision 2, March 1973, for a methyl todi penetration of less than 1.05, assuming a filter efficiency of 95 105, during systes Verifying a systes flow rate of 3000 ett + Elation mode, when tested in 3

operation of each subsystem in the iPectro scoordance with ANSI N510-1980.

Verifying that the pressure drop across the rectroulation and emergency askeup air filter trains sembined E PA filters and ch 4.

.adsorber banks is less than 8 inches and 6 inches unter gauge respectively shile operating the systes at a flo the emergency makeup air filter train.

Verifying that each subsystem will automatically switch to the rectroulation mode of operation on each of 5.

select logic shift to the recirculation modet 3/4 7-9 ygRMI - 1R11T 2 i

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Fual pesi ventilation eshaust radiation esatter, e)

Imu remeter unter level.

d) aigh dryuell preneure.

lag that open the receipt of restrealatica mode actuation test 6.

Veri

, the system auteestleally esitehas to the roetrculation mode of operation, the taalation valves eless within 5 seco si i

tach unter gauge relative to the entside stasophore during systen operation at a flew rete less than er egal te 1000 are through the emergency makeup air filter.

Verify 1ag that en the chlorine mode estuatten signal, the systes automation 11y suitehes to the chlorias mode of operation, the moraal 7

antake and ashaust teolation despers aloes within 4 asoonds and a i

sinimum of 1800 ott emergency rectreulation flew is established, i

Also, the emergency intake isolatten enspers shall be functionally l

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tasted to elene en a ehlorias aetantion signal.

Verifying that each of the emergency askeup talet air hosters diastpr.te 12.0 g 2.0 kw ehen tasted la asserdanos with 41181 N510-1 8.

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d. %e. tn g e.c+After every 730 hours0.00845 days <br />0.203 hours <br />0.00121 weeks <br />2.77765e-4 months <br /> of sharosal adsorber operation by ve days after removal that a labora analysis of a representative carbon 43.

ansple obtained in sooerdance with tory Position C.6.b of Regulatory Guide 152, movision 2, senroh 1978, mesta the laboratory testing criteria o Regulatory Position C.6.a of Angulatory cuide 1.52, Revision R. Ilarc for a methyl todido penetration of less than 1.05, assuming a filter efficiency of 955 After (1) any structural amintenance on the NEPA filter er sharcoal adsorber housings, or (2) tellowing painting, fire, or eheatoal release in any (g.

wantilation sehe essaunicating with the system by:

Verifying that both the rectroulation and emergency makeup air filter trains satisfy the in-plaos penetration testing acceptance criteria of 1.

less than 1.05, assuming a filter efficiency or 955, and uses the test procedure guidance in Regulatory Positione C.5.s, C.5.e, and Revision 2,Ilarch 1978, while operati*ng the angulatory Guide 1.52 systes at a flow rateif 1800 eft + 105 through the askeup filter and t

3000 efs g 105 through the rectroufation filter.

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osasa si een ener seassal mas a se et a ebensees mee tem me sea ens se asseresses eith tery asheep air trates,1.

1MG feestlesS.6.aer, meets Berteten 3 Guide Stei S.G.h of the asteransen testsas era sa of aganatoryasles1.sa,aavisten3

, ser a metart sostee penetrotsen et asse then 1.el, assuales a arrietaner er $55 3

ser a systen fles sete of nose em 4tel, ertes spera er ese se the :: 1-

esse, tested la enesNomes ute 851 10-1900.

After eseh eseptote er partial septeasenet et a temia EPA t114er tank by Of'..

eerifytog that the trata EPA t11ter beak entieflee the sepless genetratten criteria et Sees then 1.05 assuntas and typase 3eeksgo seeeressee ela aus! Ete teto,emite an esserher efriesener et ier the postrentaties temia. g 105 the the ashew trata tem at a este of 1000 eft I

operattag the and M eft g L h.gt after eseh er gerblat repnessment of a temia ekspeest asserher tank er vert seg t he testa sharesat adsorter task entiaties me l

genetrat en and typses teettag eriteria et Sese 1.05, enemies en edeerher le et se esserennes eith aus!

3510 1900 fer a kanagensted reft test gne addle operating the systen at a flew rate of eft the esbog trata and 3000 eft g 105 for the postremisties trata.g 105 4.7.2.2 The accessible portions of the Control Boom Emergency Filtration Systen duct accessible during normal operation, lista3 in Table 4.7.2.1-1, shall be visually inspected at least once per 366 days for cracking, debonding, or other abnormal degra3ation of the applied silicone sealant. Any such cracking, debording, or other abnornal degradation shall be reported-in accordance with Specification 6.9.2 within 14 days in a Special Report describing the findings and giving the intended course of action, including evaluation of ard justification for continued plant operation.

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INSERP PJS 3/4 7-10 (For Reference 3 pr@osal) 4.7.2.1 t'

d.

At least once every 36 months by verifying that the sections of Control Roca muergency Filtration System duct listed in Table 4.7.2.1-1, when leak tested at the test conditions stated in Table 1

4.7.2.1-1 in accordmoe with ANSI H510-1980 exhibit inlaakage less 1

than the aposptance criteria listed in Table 4.7.2.1-1 for the associated test pressure.

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TABLE 4.7.2.1-1 CONTROL Rocas EssERGENCV FILTRATION SYSTEM DUCT LEAK TESTING SURVE.ILLANCE REQUIRE 9 BENTS DUCTS d

1.

NO8MAAL IMTAILE BETWEEN DAtBPER T4100F042 AND THE CONTROL ROOtl WALL (PENETRATION V-430) 2.

NOResAL EMMAUST SETWEEN DAaBPER T4tOOF044 AND THE CONTROL ROOes WALL (PENETRATION V-429) a 3.

DISCHARGE OF RECIRCULATION FANS T4100C047 48 SETwEEN THE DISCHARGE FLANGES ON FILTER TRAIN T41000016 AND THE STH FLOOR CCHVAC EQUIPeBENT j

ROOGR WALL (PENETRATION V-5046) 4 DIVISION II SUPPLV PLENUE8 BETWEEN THE CONTROL ROOIS WALL (PEMETRATION V-431) AND THE 4TH FLOOR AUX. SUILDING CEILING (PENETRATION V-9014)

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Test Pressu.'e et or Test Pressure et or esore teore Nepet two then Moge t t ve t hen SAe m imuse IAe m imum Mege t t ve Megattwo Pressure Espected Pressure Espected For Each Spectftc Ouct For Each Spectffc During Operetton Wito e Duct During Normel Single Deeper Felluce Systene Operet ton ACCEPTANCE CRITERIA - cue 80LATIVE TOTAL FOR ALL 11 34 4 DUCTS (SCrm)

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,w NUCLEAR OENERATION MEANHtANDUM g

J File 0801.05 Date:

November 3,198g NE-PJ-8g-0735

)

. To:

File

/

From:

lJ. W. Contoni, Supervisor i

)

Mechanical 8 Fluid Syste Plant Engineering / Nuclear Engineering Basis for CCHVAC Unfiltered Sypass inteskage Criteria

Subject:

I

.j.

This memo is written to document Fermi 2 design basis for the CCHVAC unfiltered bypa

,.inleakage criteria. This memo will become an attachment to

.for Proposed Tech Spec Change to Bypass Leekage."

y

. Written By: ' A. K. Lim t

A idC I

t Approved by:.

J."

Walker G

ral Supervisor PI t Engineering / Nuclear Engineering l

Approved by:

E V. Cranston j

General Director Nuclear Engineering AKL/tr Attachment e

cc: - R. Beaudry L. Goodman D.Jax l

l l

l I

1 e,v-

,4

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.,Aitechment -

v-NE-PJ-89-0736

)

~, - '

November 3,1989 tie,

Page 2 i

?

P repair duct leaks. 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 L

acceptance limit are establish:

111.

New Test Acceptance Limit DAMPER NORMAL l

l SOURCE FAILURE (Remaining (30 Min.)

30 Day)

L Duct Leakage 34 CFM 11 CFM 9

L Doors l

1 1

(DC 5108) s l TOTAL 35 CFM 12 CFM Based on the above, the calculated thyroid dose to the control room personnel is I

j increased from 16.1 rem to about 19 rem (DC 5107). This higher value is deemed.

L acceptable because:

It is still well below the NRC limit of 30 rem thyroid by a factor of safety L

1.)

greater than 1.5.

Allows margin for pragmatic leakage through the test plug without 2.)

compromising the ability to sense duct system leakage. Test plug leakage has-no impact on operator dose.

' 3.) - The ducts are located in the Auxiliary Building and therefore are shielded from the outside ambient environment.

Silicone sealant will be inspected periodically to insure silicone sealant are in l

4.) --

L good condition.

l

. AKL/tr l

r*'

-r,--

s

--a --

-. - - - - -- - - - =

--.,w

---v.-.

w v

.r

.,x y

p A f. f"/ 4 7 A49 t'4 fry

?l achment NE-PJ-8g-0735-i e

November 3,198g Page 1 typass for CCMVAC Unfiltered Bypass inleakage

~ 1.

. Current Basis The current total unfiltered bypass inteskage to the control room is assumed to be 10 CFM. This would result in a calculated post-LOCA dose of 16.1 rom to the thyroid over 30 days. The NRC accepted this as suitable compliance with O.D.C.19 in the SER Amendment 5. In order to account for damper failure and inleakage through doors, the following acceptance criteria has been establish to insure 16.1 rem is not l

exceeded (D.C. 5105).

Operator intervention is assumed to occur after 30 mhnutes. The Op would switch to the operable division in the event of a single failure of one 1.)

damper in the operating division.

Three (3) CFM out of the total 10 CFM infilteration is reserved for by-pass 2.) -

inleakage through doors with vestibules (NE-PJ-8g-0647).

The allowable leakage reserved for the ducts is 17.21 CFM for the first 30 minutes and 5.86 CFM for the remaining 30 days. (Ref. DC 5103 and DC 5105)

. 3).

ll.

Test Data

_The negative-pressure section of ductwork were tested during RF01 and the.results are documented in DC 5103 A summary of the test results is as follows:

CCHVAC BYPASS LEAKAGE (CFM) l I

AS LEFT AS FOUND I

DAMPER DAMPER l

l l FAILURE l NORMAL l FAILURE NORMAL l SOURCE l

' (30 Min.)

(30 Day)

' (30 Min.)

(30 Day)

I

\\

h 6.20 l 17.21 l

S.86 l

l Ducts l 19.57 5

l Doors l

3.00 3.00 3.00 3.00

' (flef 4)

?

l 22.57 l

g.20 20.2 t l

8.86 s.

E TOTAL l

I I

The *as left" leakages are programatically the best achievable values for high qu duct systems. However, the tests results are too greatly influenced by the e rigorous methods used to perform the test. A small leakage through the tes (i.e.,1 CFM) will cause the current test criteria to be exceeded. To achieve 1

test result extraordinary numbers of man-hours were spent to seal test plugs

)

I

)