ML20082S785

Proposed Tech Specs Reflecting Change in Surveillance Requirements of TS 3/4.7.6

ML20082S785
Person / Time
Site:	Callaway
Issue date:	04/26/1995
From:	UNION ELECTRIC CO.
To:
Shared Package
ML20082S772	List: ML20082S770 ML20082S785
References
NUDOCS 9505030216
Download: ML20082S785 (9)

Text

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ATTACHMENT FOUR PROPOSED TECHNICAL SPECIFICATION REVISIONS 9505030216 950426 PDR ADOCK 05000483 P

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PLANT SYSTEMS r

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SURVEILLANCE REOUIREMENTS (Continued) c.

At least once per 18 months, or (1) after any structural maintenance on the HEPA filter or charcoal adsorber housings, or (2) following painting, fire or chemical release in any ventilation zone communicating with the system by:9.

1)

Verifying that the Contrc(Room Emergency Ventilation System satisfies the in-place pe netration and bypass leakage testing acceptance criteria of le ss than 1% and uses the test procedure guidance in Regulatory Pc sitions C.5.a. C.5.c, and C.S.d of Regulatory Guide 1.52, R vision 2 March 1978, and the system flowrateis2000cfm[20 for the Filtration System and 2200cfm[8 forthePressurizationSystemwith500cfm[h0 going through the Pressurization System filter adsorber unit; r TNJERY A 2)

Verifying, within 31 days after removal, that a labora tory analysis of a representative carbon sample obtained in accordi nce with Regulatory Position C 6.b of Regulatory Guide 1.52,1 :evision 2 March 1978, meets the laboratory testing criteria of"9:;;1:t:ry P :itier. 0.5.: Of R:guht ry Cuid: 1.52, Revhbr, 2, ".:rch M7S, for a methyl iodide penetration of less than.; and 90 for the Filtration 1

3)

Verifying a system flow rate of 2000 cfm - 200 Systemand2200cfm[

for the Pressurization System with 0

500cfm[

going through the Pressurization System filter adsorber unit during system operation when tested in accordance with ANSI N510-1975.

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 verifying within 31 days after removal, 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, March 1978',

meets the laboratory testing criteria ofge;uht ry I:siti r, 0.5.;

Of Regulat ry Cuida 1.52, Revisicr. 2, "( ch 1070, for a methyl iodide

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penetration of less than MEA r' A e.

At least once per 18 months by:

1)

Verifying that the pressure drop across the combined HEPA filters and charcoal adsorber banks is less than 5.4 inches j

Water Gauge while operating the system at a flow rate of 2000cfm[20 fortheFiltrationSystemand500cfm[h0 for the P.ssurization System filter adsorber unit; 1

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CALLAWAY - UNIT 1 3/4 7-15 Amendment No. 47 s

4 INSERT A ASTM D-3803-1989 when tested at 30 C and 70 elative humidity 1

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PLANT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) 2)

Verifying that on a Control Room Ventilation Isolation or High Gaseous Radioactivity test signal, the system automatically switches into a recirculation mode of operation with flow through the HEPA filters and charcoal adsorber banks; 2)

Verifying that the system maintains the control room at a positive pressure of greater than or equal to 1/8 inch Water l

Gauge relative to the outside atmosphere during system operation; and 4)

Verifying that the Pressurization System filter adsorber unit heaters dissipate 15 + 2 kW in the Pressurization System when tested in accordance with ANSI N510-1975.

3 f.

Aftereachcompleteorpartia[replacementofaHEPAfilterbank,by 3

verifying that the cleanup system satisfies the in-place penetration and bypass leakage testing cr teria of less than 1% in accordance with ANSI N510-1975 for a 00P test aerosol while operating the system at a flow rate of 2000 cfm [ 20 f r the Filtration System and 500cfm[h0 for the Pressurization System filter adsorber unit; and a

g.

After each 'omplete or partial replacement of a charcoal adsorber bank, by v rifying that the cleanup system satisfies the in-place penetratio and bypass leakage testing criteria of less than 1%

in accorda e with ANSI N510-1975 for a halogenated hydrocarbon.

refrigerant test gas while operating the system at a, flow rate of 2000cfm[20 fortheFiltrationSystemand500cfm[h0 for the Pressurization System filter adsorber unit.

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CALLAWAY - UNIT 1 3/4 7-16 Amendment No. 47

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REVISION 1

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ULTIMA 1E HLAT SIPKj g entinued]

j The limitations on minimum water level and maxfinum temperature are based on providing a 30-day cooling water supply to safety-related equipment without exceeding its design basis temperature and are consistent with the recommenda-tions of Regulatory Guide 1.27, " Ultimate Heat Sink for Nuclear Plants,"

i March 1974.

i 3/4. 7. 6 CONTROL ROOM EMERGENCY VENTILATION SYSTEM The OPERABILITY of the Control Room Emergency Ventilation System ensures that:

(1) the ambient air temperature does not exceed the allowable tempera-ture for continuous-duty rating for the equipment aid instrumentation cooled by this system, and (2) the control room will remain habitable for operations personnel during and following all credible accident conditions. Operation of the system with the heaters operating to maintain low humidity using automatic control for at least 10 cc,ntinuous hours in a 31-day period is sufficient to reduce the buildup of moisture on the charcoal adsorbers and HEPA filters. The OPERABILITY of this system in conjunction with Control Room design provisions is based un limiting the radiation exposure to personnel occupying the control room to b rees or less whole body, or its-equivalent. This limitation is consistent

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with the requirements of General Design Criterion 19 of Appendix A, 10 CFR Part 50.

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ANSI N510-1975 will be used as a procedural guide for survefilance testing.g g

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ENSEM2 3/4.7.7 EMERGENCY EXHAUST SYSTEM The OPERABILITY of the Emergency Exhaust System assures that radioactive materials leaking from the ECCS equipment within the pump room following a LOCA are filtered prior to reaching the environment. Operation of the system with the heaters operating to maintain low humidity using automatic control'for at least 10 continuous hours'in a 31-day period is sufficient to reduce the buildup of moisture on the charcoal adsorbers and HEPA filters. The operation i

of this system and the resultant ef fect on offsite dosage calculations was

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e sumed in the safety analyses. ANSI N510-1975 will be used as a procedural guide for surveillance testing.

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CAIIAWAY - UNil 1 B 3/4 7-4 5

em

. 2, 4 INSERT B i

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l ASTM D-3803-1989 will be used as a procedural guide for the laboratory -

testing of carbon samples.

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PLANT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

c. At least once per 18 months, or (1) after any structural maintenance on the HEPA filter or charcoal adsorber housings, or (2) following painting, fire or i

chemical release in any ventilation zone communicating with the system by:

1) Verifying that the Control Room Emergency Ventilation System satisfies the in-place penetration and bypass leakage testing acceptance criteria of less than 1% and uses the test procedure guidance in Regulatory Positions C.S.a, C.5.c, and C.S.d of Regulatory Guide 1.52, Revision 2, March 1978, and the sytem flow rate is 2000 cfm [2 f r the Filtradon System and 00 2200 cfm +

for the Pressurization System with 500 cfm [f0 9 I"U through the Pressurization System filter adsorber unit;

2) Verifying, within 31 days after removal, 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, March 1978, meets the laboratory testing criteria of ASTM D-3803-1989 when tested at 30 C and 70% relative humidity for a methyl iodide penetration of less than 2%; and

3) Verifying a system flow rato of 2000 cfm for the Filtration System and 2200 cfm +

for the Pressurization System with 500 cfm [f0I 9 "9 through the Pressurization System filter adsorber unit during system operation when tested in accordance with ANSI N510-1975.

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 verifying within 31 days after removal, 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, March 1978, meets the laboratory testing criteria of ASTM D-3803-1989 when tested at 30 C and 70% relative humidity for a methyl iodide penetration of less than 2%;

e. At least once per 18 months by:

1) Verifying that the pressure drop across the combined HEPA filters and charcoal adsorber be* is is less than 5.4 inches Water Gauge while operating the system at a flow rate of 2000 cfm [

for the Filtration System and 500 cfm [h0 for the Pressurization System filter adsorber ut;;;

1 l

CALLAWAY - UNIT 1 3/4 7-15 Amendment No. 47

.a PLANT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

2) Verifying that on a Control Room Ventilation isolation or High Gaseous Radioactivity test signal, the system automatically switches into a recirculation mode of operation with flow through the HEPA filters and charcoal adsorber banks;

3) Verifying that the system maintains the control room at a positive pressure of

+

greater than or equal to 1/8 inch Water Gauge relative to the outside atmosphere during system operation; and

4) Verifying that the Pressurization System filter adsorber unit heaters dissipate 15 i 2 kW in the Pressurization System when tested in accordance with ANSI N510-1975.

f.

After each complete or partial replacement of a HEPA filter bank, by verifying that the cleanup system satisfies the in-place penetration and bypass leakage testing criteria of less than 1% in accordance with ANSI N510-1975 for a DOP test aerosol while operating the system at a flow rate of 2000 cfm for the 0

Filtration System and 500 cfm for the Pressurization System filter adsorber unit; and

g. After each complete or partial replacement of a charcoal adsorber bank, by verifying that the cleanup system satisfies the in-place penetration and bypass leakage testing criteria of less than 1% in accordance with ANSI N510-1975 for a halogenated hydrocarbon refri0erant test gas while operating the system at a 0

flow rate of 2000 cfm for the Filtration System and 500 cfm for the Pressurization System filter adsorber unit.

CALLAWAY-UNIT 1 3/4 7-16 Amendmer.t No. 47 i

..o PLANT SYSTEMS BASES ULTIMATE HEAT SINK (Continued)

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

3/4.7.6 CONTROL ROOM EMERGENCY VENTILATION SYSTEM The OPERABILITY of the Control Room Emergency Ventilation System ensures that:

(1) the ambient air temperature does not exceed the allowable temperature for continuous-duty rating for the equipment and instrumentation cooled by this system, and (2) the control room will remain habitable for operations personnel during and foi!owing all credible accident condiSons. Operation of the system with the heaters operating to maintain low humidity using automatic control for at least 10 continuous hours in a 31-day period is sufficient to reduce the buildup of moisture on the charcoal adsorbers and HEPA filters.

The OPERABILITY of this sytem in conjunction with Control Room design provisions is based on limiting the radiation exposure to personnel occupying the control room to 5 rems or less whole body, or its equivalent. This limitation is consistent with the requirements of General Design Criterion 19 of Appendix A,10 CFR Part 50. ANSI N510-1975 will be used as a procedural geide for in-place surveillance testing. ASTM D-3803-1989 will be used as a procedural guide for the laboratory testing of carbon samples.

3/4.7.7 EMERGENCY EXHAUST SYSTEM The OPERABILITY of the Emergency Exhaust System assures that radioactive materials leaking from the ECCS equipment within the pump room following a LOCA are filtered prior to reaching the environment. Operation of the system with the heaters operating to maintain low humidity using automatic control for at least 10 continuous hours in a 31-day period is sufficient to reduce the buildup of moisture on the charcoal adsorbers and HEPA filters. The operation of this system and the resultant effect on offsite dosage calculations was assumed in the safety analyses. ANSI N510-1975 will be used as a procedural guide for surveillance testing.

CALLAWAY - UNIT 1 B 3/4 7-4