ML20029B138
| ML20029B138 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 02/27/1991 |
| From: | Lainas G Office of Nuclear Reactor Regulation |
| To: | Tuckman M DUKE POWER CO. |
| References | |
| TAC-79812, TAC-79813, NUDOCS 9103050485 | |
| Download: ML20029B138 (6) | |
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UNITED STATES I
NUCLEAR REGULATORY COMMISSION
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WASHINGTON, D.C. 3m46 February 27, 1991 Docket Nos. 50-413 and 60-414 I
Mr. M. S. Tutkm6n, Vice President Nuclear Operations R
Ouke Sower Comprny 1
P.C. JoA 1007
. Charlotte, Norin Carolina 28201-1007 Ocar Mr. Tu @ ns
SUBJECT:
TEHhWRY WAIVER OF. COMPLIANCE - CATAWBA NU/ LEAR 51AT10N g
UN115 s ?& I tTACS 79P12, 79813)
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'tlephone is 1 en February 25, 1991 and a letter dated February 26, 1991,
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- Poner @,spany requested a Temporary Waiver of CM11ance from the re,ut. eents at rechnical Specifications (TSs) Table 3.3-6, ' tem 3 (Action 31),
4.7.6.e(2) and 4.7.6 e(S). TSs 4.7.6e(2) and 4.7.6c(5) re m o periodic s'
demonstration of Control Room Area Ventilation System opereell Q by Yerifying tRt, on a High Radiation Air Intake, Smoke. Density-High or 646,blorine/ Toxic Gas test sign'l the system automatically isolates the affecteo fidake from the L
.outside ate =1G *ncirculatin9 flow through the system filters anc C arcoal adsorber buks, T Me 3.3-6,. Item 3-(Action 31) would also requirc tulation of the cir mtdes,'; the minimum channels operable requirement WuW let be
-met t Or the lihn Rad'e activity-Air intake instrumentation.
The control room aret is normally maintained at a posithe pressure by takq
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makeup ak from eithm or both of two outside air intakes.
Each intake is t
monitored for the presence of radioactivity, smoke and chlorine.
Isolation of the intake shou *ld,:as-described in the FSAR, occur automatically upon detection of these conditions. Should both intakes close, the operators would subsequently opcn the' desired intake to ensure control room pressurization.
Pressurization is necessary to rnsure control room habitability and compliance with GDC -followinn a d sign basis accident.
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' Rec w ely, tiit' 4 pnsee identified design 1.nconsistencies wherein, on combinations of,'a loss-of-coolan'-accident-l'OCA), loss of-offsite power (LOOP) Md the-
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fdlure of a dfesel enerator.
he air intake isolation valves would close and J
-Muld not be. reopened da tin.a y manner to knable meeting the_ GDC 19 design tmit-accident analysin W 11m t. < This inf ormation was reviewto by the-itcensee with the-result 4*l 4 to declare both trains of-the CR ventilation F
sp tems' inoperable because;intLsystem could not meet its intended function undK all postulateo conditions and to enter 15 3.0.3 which would require unit shutdown. The licensee then requ'sted a Temporary Waiver of Compliance from the associated Technica1'SpecificatMs which Nould allow 1) the isolation valves to :ee maintained Jn an open post % on by removing power (from their actuators.
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(2) the implementa* ion of certain compensatory ineasures, and (3) the processing of an amendment to_ the TS to effeet a permanent reso5 tion to the problem.
4 91030504 % 910227
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TA8l.! 3.3 6 (Continued)
TABLENOTATKQ With fuel in the fuel storage pool areas With irradiated fuel in the fuel storage pool areas.
the trip se*-
When venting er purging free containment to the atmosphere point shall not exceed the equivalent limits of Specificatlon 3.11.2.1 in accordance with the methodolo p and parameters in the 00CM. When'not vent-ing or purging in Rdes 5 or the alarm setpoint concentration (pci/ml) shall be such that the actus)%suuersion dose rate would not exceed SaR without alars. When not venting or purging in Modes 1 through 4 the alare setpoint shall be no more than 3 times the containment atmosphere activity
,asindicatedbytheradiationmonitor.
ACTION STATEMEKi$
ACT!QH %
- With less than the Minimum Channels CPERABLE requirement, operation may continue provided the cont'ainment purge and
'n',4)a% n og mp,,,,i g, o
'O exhaust va % s are maintained closet i
rg ACTISN 31 - With tlie number of operable channels one 1 than the Minfmum Channelt OPERABLE requirement, within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />. :!:te t M i :t M Control RoontVent11ation System 't e: ' = ette % 9 with flow thrergh.the HEPA filters and activated carbon adsorbers.
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ACT!ON 32 - W1th N : thankeMinimumChannelsOPERABLErequirement, opera-tion may continue for up to 30 days provided an appropriate portable continuous monitor with the same Alare Setpoir,t is L
provided in the fuel storage pool area.
Restore the inoperable monitors to OPERABLE status within 30 days or suspend all operations involving fuel movement in the fuel building.
ACTION 33 Must satisfy the ACTION requirement.for $pecification 3.4.6.1.
ACTION 34 - With the number of OPERABLE channels less than the Minimum operation may continue provided Channels OPERASLE requirement, Exhaust system is operating and the Fual Handling Ventilation l
discharging through the HEPA filters and activated carbon adsorbers.
l Otherwise, suspend all operations involving fuel movement in the fuel building.
ACTION 35-WiththsnumberofOPERABLEchannelslessthantheMihimusCha OPERABLE requirement, operation say continue provided the Auxiliary Building Filtered Exhaust System is operating and discharging
.l through the HEPA filter and activated carbon adsorbers.
ACTION 36 - With the number of OPERABLE channels less than the Minimus Channels
' QPERABLE requirement, operation say continue for up to 30 days l
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previded that, at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, grab samples are collected and analyzed for radioactivity (gr a game) at a lower limit of detection of no more than 10 Ci/al.
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CATAWEA - thi1TS 1 & 2 3/4 3 53 Amendment N9 37 Unit 1 Amendment No. 29 Unit 2 e.
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f sy:0 UKE P07.'ER COMPANY i 2-20-UrTVMMn muvvvvvw m
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Y PLANT SYSTr.M5
$URVE!LLANCE REQUIRDUT5 (Cont (nued) i At least once per 18 months or (1) after any structural maintenance c.
en the HEPA filter or activated carbon adsorber housings, er (2) following painting, fire, or choeical release in any vent 11ation tone cosaunicating with the systea by:
i Verifying that the cleanup systaa satisfies the in place 1) penetration and bypass leakage testing acceptance criteria of l
Regulatury Position C 5.a. C.5.c. and C.5 d* guidance in less than 0.055 and uses the. test procedure o
of Regulatory Revisions 2. March 1978, and the system flow Guide 1.52 0 cfm i 15; rate is 600 within 31 days after removal, that s laboratory Verifying,f a representative activated carbon sample obtained 2) analysis o in accordance with Regulatory Position C.8.b of Regulatory l
Guide 1.52, Revision 2, Position C.I neets the laboratory testing March 1974 a of Regulatory guide 1.52, criteria of Regulatory Revision 2. March 1978, for a methyl iodido penetration of less l
t than 0.1755; and V.rifying a system flow rate of 6000 cfm + 10% during system 3) operation when tested in accordance with XNSI N510-1980, After every 1440 hours0.0167 days <br />0.4 hours <br />0.00238 weeks <br />5.4792e-4 months <br /> of activated carbon adsorber operation, by d.
varifying, within 31 days after removal, that a laboratory analysis **
of a representative activated carbon sample obtained in accordance with Regulatory Position C.6.b of Regulatory Guide 1.52, tion C.6 a of Regulatory Guide 1.52. Revision 2, March 1978, for a
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asethyl iodide penetration of less than 0.1755; e.
At least once per 14 months by:
Verifying that the pressure drop seross the combined HEPA filters, 1) activated carbon adsorber banks, and moisture separators is less than 8 inches Water Gauge whilp operating the system at a+M flow rate of 6000 cfm ~+ 105; f c C st.ves n o.%cm \\c on-AhkroIntae,or$k'sDensity-no too Verifying that on a High Rad 2) th: Off::ted High test signal, the systes at:rth:"y f.:ht::u.:h: fr = ::t;' t Of Mt:r; =d ::th:t:d ::tn O;tr Mit; Verifying that the systen maintains the control roca st a posi-3) tive pressure of greater than er equal to 1/4 inch Water Gauge relative to ad.tacant areas at less than or equal to pressuriza-tion flow of 4000 cfm to the control room during system operation;
-Verifyingthattheheatersdissipata25a2.8ki,and 4)
"The requirement for reducing refrigerant concentration to 0.01 ppe say be satisfied by operating the syntes for 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br /> with heaters on and operating.
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- Activated carbon adsorber samples are tested at 30 degree C.
CATAWRA - UNITS 1 & 2
.3/4 7-15 Amendmen't No. 78 (Unit 1)
Amendment No. 72 (Unit 2)
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' PLANT SYSTEMS
$t/RVFILt.ANet RfMRENth'Ts (continued)
MA u.nhes c( n a,%c m 'm %4 C.e ntro \\ Room 1
5)
.Yori fyi ng that on a High Chlorine / Toxic Gas test signal, the systes'autes:tteel.lu ' ^ ' " ^ = ^ ^ - " - - " ' ' - " ' " '
Otr.cith recimi: ting-f1= thr:e;h th: MEPA-filt:r: :nd ::ti-
';:ted ::rt:n id:: rte?: 5
': M th'- 10 ::::nd:-(ple: cir tr: ;1
-tic; i;tu::n th: 4;t::ter:-:nt tM i 10ti:n d g : :).
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After each complete or partial replacement Of a NEPA filter bank, by verifytrtg that the cleanup system satisfies the i.vplace penetration and bypass leakage testing acceptance criteria of less than 0.05%
in accordance with ANS! N5101980 for a 00P test avmsol while operating the systas at a flow rate of 6000 cfc
- ICh*; and g.
After each complete or partial replacement of an sci,ivated carbca adsorber bank, by verifying that the cleanup systaa satisfies the in place penetration 8.nd bn ass leakage testing acceptance critaria of less than 0.05% in accordance with ANSI N5101980 for a.
l halogenated hydrocarbon refrigerant test gas while operating the system at a flow rate of 6000 cfm i 1C5.
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1 CATAWRA = UNITS 1 & 2 3/4 7-18 Amendment No.78 (Unit 1)
Amendment No.72 (Unit 2) l l
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Mr. M.S. Tuckn.an -
Catawba Nuclear Station Duke Power Con >pany i
- Mr.:A.V.,Carr, Esq.
North Carolina Electric Membership Duke Power Company-Corp.
422 South Church Street P.O. Box 27306 Charlotte, North Carolina. -28242-0001 Raleigh, North Carolina 27611 J. Michael McGarry, III, Esq.
Saluda River Electric Cooperative, Winston and Strawn Inc.
1400 L Street,-N.W.
P.O. Box 929 Washington, D. C.
20005 Laurens, South Carolina 29360 Senior Resident Inspector North Carolina P"A-1 Route 2, Box 179N Suite 600 - -
York, South Carolina 29745 P.O.-Box-29513-Raleigh, North Carolina-27626-0513 Regional Administrator, Regicn II U.S. Nuclear Regulatory Commission Mr. Frank Modrak 101 Marietta Street, NW, Suite 2900 Project Manager, Mid-South Area Atlanta, Georgia 30323 ESSD:Projets
- Westinghouse Electric Corp.
Mr. Heyward G. Shealy, Chief MNC West 1 Tower - Bay 241; Bureau of Radiological Health
--P.O. Box 355 South Carolina Department of Health Pittsburgh, Pennsylvania' 15230 and Environmentel Control-2600 Bull Street
. County Manager of: York County Columbia, South Carolina 29201 York County Courthouse
. York, South Carolina 29745 Ms. Karen E. Long Assistant Attorney General Richard P.-Wilson,_Esq.
N.C. Department of Justice Assistant-Attorney General P.O. Box 629 S.C. Attorney General's Office Raleigh, North Carolina 27602 P.O.' Box 11549-Columbia,-South Carolina --29211 Mr. Robert G. Morgan
-Nuclear Production Department
' Piedmont Municipal-Power Agency Duke-Power Company 2121< Village Drive P.O.-Box 1007 Greer, South Carolina 29651 Charlotte, North Carolina -28201-1007 Mr.1A1an R.<:Herdt, Chief' Mr. P..L.'6111, Jr.
u Project Branch f3 Nuclear Production Department ~
L U.S. Nuclear: Regulatory Comission
-Duke Power Company 101 Marietta Street,-NW,' Suite 2900 P.O. Box 1007
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Atlanta, Georgia-,30323 Charlotte, North Carolina 28201-1007 p-i
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'o February 27, 1991 Mr. M. S. Tuckman The NRC staff has reviewed the evaluation and justification provided in the Duke Power Company letter of February 26, 1991, regarding the Control Room Area Ventilation System operability. The NRC staf f agrees that, as an interin measure, the automatic isolation feature of the air intake isolation valves upon radiation, smoke or chlorine may be deactivated by removal of motive power and the valves controlled in accordance with administrative procedures pending a change in the Technical Specifications that would reflect o modification to the system to effect a permanent resolution to the concerns. Accordingly, this letter confirms the verbal granting of a Temporary Waiver vf Compliance f or the above mentioned TS. This waiver of compliance will be in effect for a short period of time while we complete the processing of your emergency TS change request. Proposed TS pages 3/4 3-53, 3/4 7-15, and 3/4 7-16 based upon your letter of February 26, 1991, are enclosed.
Sincerely, teil Gus C. Lainas, Assistant Director for Region 11 Reactors Division of Reactor Projects - 1/II Office of Nuclear Reactor Regulation
Enclosure:
Ac. stated DISTRIBUTION
- Docket
- File '
D. Hagan MNBB 3206 Local PDR G. Hill (8)
P137 NRC PDR W. Jones MNBB 7103 J. Calvo 11-E-24 T. Hurley 12-G-18 l
F. Mireglia 12-G-18 GPA/PA J. Partlow 12-G-18 OC/LFMB S. Varga 14-E-4 PDII-3 R/F G. Lainas 14-H-3 J. Lieberman 7-H-5 B. Clayton 9-H-3 M. Boyle
, 14-E-4 R. Martin 9-H-3 L. Reyes RII D. Matthews 9-H-3 OGC 11 SPL h'
D:
1 3
AD '
RIl (by phone)
[S.fp&3 0FC L P II-3
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HAME. B
<fn artin/rst CM ra ei DMatthews ainas EMerschoff DATE
,2 a'y91 2./ 2/ 91 2 Af/T1 Q_/p/91 2/7/91 2/25/91 2
0FFICIAL RECORD COPY Document Names CATAWBA TEMP WAIVER i