Text

Proposed Tech Specs Re Control Room Emergency Habitability Sys
	ML20214E345
Person / Time
Site:	Beaver Valley
Issue date:	05/13/1987
From:	; DUQUESNE LIGHT CO.
To:	;
Shared Package
ML20214E338	List: ML20214E337; ML20214E345;
References
	NUDOCS 8705220049
	Download: ML20214E345 (17)
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.PLANT SYSTEMS 3/4.7.7 CONTROL ROOM EBERGENCY HABITABILITY SYSTEMS LIMITING CONDITION FOR OPERATION 3.7.7.1 The control room emergency habitability system.is OPERABLE when:

a.

Two out of three emergency ventilation subsystems,

fans, associated filters and dampers are OPERABLE, and b.

Five bottled air-pressurization subsystems consisting of two bottles per subsystem are OPERABLE, and nh kA ub c.

The series normal air intake and exhaust' isolation dampersAare

OPERABLE, and capable.of automatic closure on a CIB, Control Room High Radiation and Chlorine isolation signal, or closed.

d.

The control room air temperature is maintained 188'F.

a. With either unit

in MODES 1'4 w,as ever.m h ese h \\

2 3 and 4 or APPLICABILITY:

,e mA,

b. During irradiatedfuelmovementgateitherunitand

a. above or

c. Refer to T.S. 3.9.15 when both units are in either

}

MODES 5 or 6 l

]

ACTION:

i l

a.

With less than two emergency ventilation subsystems, fans, and j

associated filters

OPERABLE, restore at least two subsystems to l

OPERABLE status within 7

days

'o r be.in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following l

30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

a.1 With an emergency ventilation subsystem inlet isolation damper open and not capable of being closed, the requirements of 3.0.3 are applicable.

~

b.

With one bottled' air pressurization subsystem inoperable, restore five bottled air pressurization subsystems to OPERABLE within 7 days or~be in.at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in 4

COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

i b.1 with less; than four bottled air pressurization subsystems

OPERABLE, the requirements of 3.0.3 are applicable and movement of irradiated fuel shall be suspended.

1 k

l Emergency power for one train of dampers of the Unit in MODES 5 j

or 6 need not be available.

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l BEAVER VALLEY - UNITS 1-0 2 3/4 7-16 PROPOSED WORDING I

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3/4.7.7' CONTROL ROOM EMERGENCY HABITABIITY SYSTEMS LIMITING' CONDITION FOR OPERATION

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c.

With one open series normal air intake. or exhaust isolation damper inoperable and not capable of closing, restore all series dampers to OPERABLE status within 7 days or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

i col with both series normal air intake or exhaust isolation dampers inoperable and not-capable of being closed, the requirements of i

3.0.3 are applicable and movement of irradiated fuelyshall be suspended.

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With the control room air temperature

>88'F, return the temperature to 188'F in 7

days or be in at least NOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

e.

The requirements of 3.0.4 are not applicable.

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i BEAVER VALLEY - UNITS 14 1 3/4 7-16A PROPOSED WORDING G

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' PLANT SYSTEMS

'3/4.9.15 CONTROL ROOM EMERGENCY HABITABILITY SYSTEMS LIMITING CONDITION FOR OPERATION 3.9.15.1 The-control room emergency habitability system is OPERABLE

-when:

a.

Two out of three emergency ventilation subsystems, fans and associated filters and dampers are OPERABLE, and i

b.

Five bottled air pressurization subsystems consisting of two bottles per subsystem are OPERABLE, and 4

&c hA uds dampers (Aare The se ies normal air intake and exhaust isolation c.

OPERABLE, and capable of automatic closure on a

Control Room High Radiation and Chlorine isolation signal *, or closed.

a i

APPLICABILITY:

When both units are in either MODE 5 or 6.

( oc m.a m e d S

!**d' ACTION:

a.

With less than two emergency ventilation subsystems, fans and associated ~ filters OPERABLE and irradiated fuel being i

move restore at least two subsystems to OPERABLE status with 7 days or close at least one series normal air intake and exhaust-isolation damper on'each intake and exhaust to the ciontrol room.

b.

With one bottled air pressurization subsystem inoperable, restore five.

bottled air pressurization subsystems to OPERABLE within 7J days or suspend all movement of irradiated -fue{ er men *.t

.gperations involving ws. e c - ocr.ae A.

M, b.1 With less -than.' four bottled air pressurization subsystems OPERABLE or ;no emergency ~ ventilation subsystems OPERA 3LE, suspend all-operations involving movement of irradiated j

fueg er m.*M.4 (=4

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c.

With.one open seri normal ~ air intake or exhaust isolation l

damper'_ inoperable # and:not capable of closing and irradiated fueli beingmov restore all series dampers to OPERABLE status; within 7.

ys or close at least one series normal air i

intake.

and exhaust isolation damper on each intake and i

exhaust to the control room.

Not applicable when output re fuses are removed to prevent inadvertant ESF actuatiorg(- der s.laysmgk ud-Emergency backup power not required for any 1

of 2 series dampers.

BEAVER VALLEY - UNIT L ". 2 3/4 9-16 l

PROPOSED WORDING

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c.1 With both series normal air intake or exhaust isolation dampers ino'perablet and not capable of being closed, suspend all_ operations involving movement of irradiated fueV or m.va.m ~4 et

1. 45 ever irr A*hA bl.

A d.

The requirements of 3.0.4 are not applicable.

SURVEILLANCE REQUIREMENTS 4.9.15.1 The emergency ventilation subsystems and the battled air j

pressurization system shall be demonstrated OPERABLE in accordance j

with Specifications 4.7.7.1.1, 4.7.7.1.2 and 4.7.7.2 with the following exception:

a.

Automatic operation upon receipt of a containment phase B isolation signal is not required.

i

)

1 1

s req' ired for any 1

of 2 series Emergency backup power not u

dampers.

i l

BEAVER VALLEY - UNITS 1 4 2 3/4 9-17 l

l PROPOSED WORDING

PLANT SYSTEMS 3/4.7.7 CONTROL ROOM EMERGENCY HABITABILITY SYSTEMS LIMITING CONDITION FOR OPERATION 3.7.7.1 The control room emergency habitability system is OPERABLE when:

a.

Two out of three emergency ventilation subsystems,

fans, associated filters and dampers are OPERABLE, and b.

Five bottled air pressurization subsystems consisting of two bottles per subsystem are OPERABLE, and c.

The series normal air intake and exhaust isolation dampers for both units are

OPERABLE, and capable of automatic closure on a

CIB, Control Room High Radiation and Chlorine isolation signal, or closed.

d.

The control room air temperature is maintained 188'F.

APPLICABILITY:

a. With either unit

in MODES 1, 2, 3 and 4, or

b. During irradiated fuel movement or movement.of loads over irradiated fuel at either unit and a.

above or

c. Refer to T.S.

3.9.15 when both units are in either MODES 5 or 6 i

ACTION:

a.

With less than two emergency ventilation subsystems, fans, and associated filters

OPERABLE, restore at least two subsystems to OPERABLE status within 7

days or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

a.1 With an emergency ventilation subsystem inlet isolation damper open and not capable of being closed, the requirements of 3.0.3 are applicable, b.

With one bottled air pressurization subsystem inoperable, restore five bottled air pressurization subsystems to OPERABLE within 7 days or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

b.1 With less thar..

four bottled air pressurization subsystems

OPERABLE, the requirements of 3.0.3 are applicable and movement of irradiated fuel shall be suspended.

~

Emergency power for one train of dampers of the Unit in MODES 5 or 6 need not be available.

1 i

BEAVER VALLEY - UNIT 1 3/4 7-16 PROPOSED WORDING

' PLANT ~ SYSTEMS 3/4.7.7 CONTROL ROOM EMERGENCY HABITABIITY SYSTEMS LIMITING CONDITION FOR OPERATION c.

With one open series normal air intake or exhaust isolation damper inoperable and not capable of closing, restore all series dampers to OPERABLE status within 7 days or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

c.1 With both series normal air intake or exhaust isolation dampers incperable and not capable of being closed, the requirements of 3.0.3 are applicable and movement of irradiated fuel or movement of loads over irradiated fuel shall be suspended.

d.

With the control room air temperature

>88'F but i

105'F, return the temperature to 188'F in 7 days or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

d.1 With the control room air temperature > 105*F, be in at least HOT STANDBY within the next 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

o.

The requirements of 3.0.4 are not applicable.

BEAVER VALLEY - UNIT 1 3/4 7-16A PROPOSED WORDING J

PLANT SYSTEMS SURVEILLANCE REQUIREMENTS 4.7.7.1.1 The BV-1 emergency ventilation subsystem shall be l demonstrated OPERABLE:

a.

At least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months by verifying that the control room air temperature is <88aF.

l b.

At least once per 31 days by initiating flow through the l HEPA filter and charcoal adsorber train and verifying that the train operates for 15 minutes.

c.

At least once per 18 months or after every 720 hours0.00833 days 0.2 hours 0.00119 weeks 2.7396e-4 months of l system operation and (1) after each complete or partial replacement of a

HEPA filter or charcoal adsorber bank, or (2) after any structural maintenance on the HEPA filter or charcoal adsorber housing or (3) following painting, fire or chemical release in any ventilation zone communicating with the system by:

1.

Verifying that the filtration system satisfies the in-place penetration and by-pass leakage testing acceptance criteria of less than 1%

when tested in accordance with ANSI N510-1980 while operating the ventilation system at a flow rate of 800 - 1000 cfm.

2.

Subjecting the carbon contained in at least one test canister or at least two carbon samples removed from one of the charcoal adsorbers to a laboratory carbon sample analysis and verifying a removal efficiency of 1

99%

for radioactive methyl iodine at an air flow velocity of.68 ft/sec 120% with an inlet methyl iodide concentration of 1.5 to 2.0 mg/m8, 170%

relative

humidity, and 30*c il/2*C; other test conditions shall be in accordance with ANSI N510-1980.

The carbon samples not obtained from test canisters shall be prepared by either:

a)

Emptying one entire bed from a removed adsorber

tray, mixing the adsorbent thoroughly, and obtaining a

sample volume equivalent to at least l two inches in diameter and with a length equal to the thickness of the bed, or b)

Removing a

longitudinal sample from an adsorber l l

tray using a

slotted-tube

sampler, mixing the adsorbent thoroughly, and obtaining a

sample volume equivalent to at least two inches in diameter and with length equal to the thickness of the bed.

BEAVER VALLEY - UNIT 1 3/4 7-17 PROPOSED WORDING

---A

PLANT SYSTEMS-SURVEILLANCE REQUIREMENTS (continued) 3.

Verifying a

system flow rate of 800 - 1000 cfm during l system operation.

d.

At least once per 18 months by:

1.

Verifying that the pressure drop across the combined Hr.JA filters and charcoal adsorber banks is <6 inches Water Gauge while operating the ventilation system at a l

flow rate of 800 - 1000 cfm.

l 2.

Verifying that on a

chlorine / control room high radiation / containment phase B

isolation test signal from either Unit *, the system automatically closes all the series isolation ventilation system dampers which isolate the combined control room from the outside atmosphere.

i 3.

Verifying that one emergency ventilation subsystem l

maintains the combined control room at a

positive pressure of 11/8 inch Water Gauge relative to the outside atmosphere during system operation.

l 4.

Verifying that the heaters dissipate 5 1 0.5 kw when j

tested in accordance with ANSI N510-1980.

l 4.7.7.1.2 The BV-2 cmergency ventilation subsystems shall be l

demonstrated OPERABLE:

a.

At least once por 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months by verifying that the control room air temperature is 188'F.

b.

At least once per 31 days by initiating flow through each HEPA filter and charcoal adsorber train and by verifying that each train operates for 15 minutes.

c.

At least once per 18 months, or after every 720 hours0.00833 days 0.2 hours 0.00119 weeks 2.7396e-4 months of l

system operation and (1) after each complete or partial replacement of a

HEPA filter or charcoal adsorber bank, or (2) after any structural maintenance on the HEPA filter or charcoal adsorber housings, or (3) following painting, fire or chemical release in any ventilation zone communicating with the system by:

1.

Verifying that the filtration system satisfies the in-place penetration and by-pass leakage testing acceptance critoria of less than 1%

when tested in accordance with ANSI N510-1980 while operating the l

ventilation system at a flow rate of 800-1000 cfm.

l

~

l Input from Unit 2 is not applicable until prior to initial entry l

into MODE 4.

BEAVER VALLEY - UNIT 1 3/4 7-18 PROPOSED WORDING

PLANT SYSTEMS SURVEILLANCE REQUIREMENTS, Continued 2.

Subjecting the carbon contained in at least one test canister or at least two carbon samples removed from one of the charcoal adsorbers to a laboratory carbon sample analysis and verifying a removal efficiency of 199%

for radioactive methyl iodine at an air flow velocity of 0.70 ft/sec 120%

with an inlet methyl iodine concentration of 1.5 to 2.0 mg/m3, 170% relative

humidity, and 30"C 1/2*C; other test conditions shall be in accordance with ANSI N510-1980.

The carbon samples not obtained from test canisters shall be prepared by either:

a)

Emptying one entire bed from a removed adsorber

tray, mixing the adsorbent thoroughly, and obtaining a

sample volume equivalent to at least two inches in diameter and with a length equal to the thickness of the bed, or b)

Removing a

longitudinal sample from an adsorber tray using a

slotted-tube

sampler, mixing the adsorbent thoroughly, and obtaining a

sample volume equivalent to at least two inches in diameter and with a length equal to the thickness i

of the bed.

3.

Verifying a

system flow rate of 800 to 1000 cfm during system operation.

d.

At least once per 18 months by:

1.

Verifying that the pressure drop for each filter assembly is

<3.0 inches Water Gauge across each HEPA filter and <0.9 inches Water Gauge across each charcoal filter while operating the ventilation system at a flow rate of 800 to 1000 cfm.

2.

Verifying that on a

Containment Isolation Phase B/ Control Room High Radiation test signal from either Unit *,

the system automatically closes all the series isolation ventilation system dampers which isola *.e the combined control room from the outside atmosphere and the system automatically. starts 60 minutes later and supplies air to the control room through the HEPA filters and charcoal adsorber banks.

3.

Verifying that on a

chlorine test signal from either Unit *,

the system automatically closes all the series isolation ventilation system dampers which isolate the combined control room from the outside atmosphere.

4 Input from Unit 2 is not applicable until prior to initial entry into MODE 4.

BEAVER VALLEY UNIT 1 3/4 7-18a PROPOSED WORDING

PLANT SYSTEMS SURVEILLANCE REQUIREMENTS, (continued) i 4.

Verifying that one emergency ventilation subsystem maintains the control room at a positive pressure of

>1/8 inch Water Gauge relative to the outside l

atmosphere during system operation.

5.

Verifying that the heaters dissipate 5 1 0.5 kw when tested in accordance with ANSI N510-1980.

L 4.7.7.2 The bottled air pressurization system shall be demonstrated OPERABLE:

l a.

At least once per 31 days by verifying that the system l

contains a

minimum of 10 bottles of air each toatleast1825psigandbyverifyingthatl l

pressurized the system solenoid operated valves are powered from an operable emergency bus, b.

At least once per 18 months be verifying that:

l 1.

A chlorine / control room high radiation / containment phase B

isolation test signal from either Unit

will initiate system operation.

2.

Upon a

partial discharge test using four out of five bottled air subsystems the system will.

pressurize the control room to 11/8 inch Water Gauge relative to the outside atmosphere during system operation.**

l l

l

~

Input from Unit 2 is not applicable until prior to initial entry l

into MODE 4.

A one-time one-hour discharge test has been performed utilizing

(

four out of five bottled air subsystems demonstrating the bottled air pressurization system will maintain the combined control room at a

positive pressure of 11/8 inch Water Gauge relative to the outside atmosphere.

l I

i BEAVER VALLEY UNIT 1 3/4 7-18b PROPOSED WORDING l

f P'LANT SYSTEMS 3/4.9.15 CONTROL ROOM EMERGENCY HABITABILITY SYSTEMS i

l LIMITING CONDITION FOR OPERATION 3.9.15.1 The control room emergency habitability system is OPERABLE l

when:

a.

Two out of three emergency ventilation subsystems, fans and associated filters and dampers are OPERABLE, and l

b.

Five bottled air pressurization subsystems consisting of two bottles per subsystem are OPERABLE, and c.

The series normal air intake and exhaust isolation i

dampers for both units aro OPERABLE, and capable of l

automatic closure on a Control Room High Radiation and Chlorine isolation signal *, or closed.

APPLICABILITY:

When both units are in either MODE 5 or 6.

ACTION:

f a.

With less than two emergency ventilation subsystems, fans and associated filtors OPERABLE and irradiated fuel being moved or movement of loads over irradiated fuel, restore at least two subsystems to OPERABLE status within 7 days or l

close at least one series normal air intake and exhaust isolation damper on each intake and exhaust to the control room.

b.

With one bottled air prossurization subsystem inoperable, restore five bottled air pressurization subsystems to OPERABLE within 7

days or suspend all operations involving movement of irradiated fuel or movement of loads over irradiated fuel.

b.1 With loss than four bottled air pressurization subsystems OPERABLE or no emergency ventilation subsystems OPERABLE, suspend all operations involving movement of irradiated fuel or movement of loads over irradiated fuel.

c.

With one open series normal air intako or exhaust isolation dampor inoperablo# and not capable of closing and irradiated fuel being moved or movement of loads over irradiated fuel, l

rostoro all series dampors to OPERABLE status within 7 days l

or closo at least one series normal air intako and exhaust isolation damper on each intake and exhaust to the control room.

i Not applicablo when output relay fuses are removed to provent inadvertant ESF actuation for a single unit.

Emergency backup power not required for any 1

of 2 serios dampors.

BEAVER VALLEY - UNIT 1 3/4 9-16 PROPOSED WORDING u

PLANT SYSTEMS LIMITING CONDITION FOR OPERATION l-t c.1 With both series normal air intake or exhaust isolation dampers inoperable # and not capable of being closed, suspend all operations involving movement' of irradiated fuel or movement of loads over irradiated fuel.

d.

The requirements of 3.0.4 are not applicable.

l SURVEILLANCE REQUIREMENTS 4.9.15.1 The emergency ventilation subsystems and the bottled air pressurization system shall be demonstrated OPERABLE in accordance with Specifications 4.7.7.1.1, 4.7.7.1.2 and 4.7.7.2 with the following exceptions a.

Automatic operation upon receipt of a containment phase B isolation signal is not required.

t l

~

Emergency backup power not required for any. 1 of 2 series dampers.

BEAVER VALLEY - UNIT 1 3/4 9-17 PROPOSED WORDING i

I

PLANT SYSTEMS BASES 3/4.7.7 CONTROL ROOM EMERGENCY HABITABILITY SYSTEM The OPERABILITY of the control room emergency habitability system ensures that the control room will remain habitable for operations personnel during and following all credible accident conditions.

The ambiont air temperature is controlled to prevent exceeding the allowable equipment qualification temperature for the equipment and instrumentation in the control room.

The OPERABILITY of this system in conjunction with control room design provisions is based on limiting the radiation exposure to personnel occupying the control room to 5

rem or loss whole body, or its equivalent.

This limitation is consistent with the requirements of General Design Critoria 19 of Appendix "A", 10 CFR 50.

3/4.7.8 SUPPLEMENTAL LEAK COLLECTION AND RELEASE SYSTEM (SLCRS)

The OPERABILITY of the SLCRS provides for the filtering of postulated radioactivo offluents resulting from a

Fuel Handling Accident (FHA) and from leakago of LOSS of COOLANT ACCIDENT (LOCA) activity from systems outsido of the Reactor Containment building, such as Engincored Safeguards Features (ESF) equipment, prior to their release to the environment.

This system also collects potential leakage of LOCA activity from the Reactor Containment building panotrations into the contiguous areas ventilated by the SLCRS cxcept for the Main Steam Valvo Room and Emergency Air Lock.

The operation of this system was assumed in calculating the postulated offsito dosos in the analysis for a FHA.

System operation was also assumed in that portion of the Design Basis Accident (DBA)

LOCA analysis which addressed ESF leakage following the

LOCA, however, no credit for SLCRS operation was taken in the DBA LOCA analysis for collection and filtration of Reactor Containment building leakage even though an unquantifiable amount of contiguous area ponotration leakago would in fact be collected and filtered.

Based on the results of the analysos, the SLCRS must be OPERABLE to ensure that ESF leakago following the postulated DBA LOCA and leakago resulting from a FHA will not excood 10 CFR 100 limits.

3/4.7.9 SEALED SOURCE CONTAMINATION The limitations on scaled sourco removable contamination ensure that the total body or individual organ irradiation does not exceed allowablo limits in tho event of ingestion or inhalation of the sourco material.

The limitations on removable contamination for sourcos requiring leak testing, including alpha emitters, is based on 10 CFR 79.39(c) limits for plutonium.

Leakage of sources excluded from the requiremonts of this specification represent loss than one maximum permissiblo body burden for total body irradiation if the sourco matorial is inhaled or ingostod.

3/4.7.10 and 3/4.7.11 RESIDUAL HEAT REMOVAL SYSTEM (RHR)

Deleted DEAVER VALLEY UNIT 1 D 3/4 7-5 PROPOSED WORDING

1 REFUELING OPERATIONS i

BASES 3/4.9.15 CONTROL ROOM EMERGENCY HABITABILITY SYSTEMS The OPERABILITY of the control room emergency habitability system ensures that the control room will remain habitable for operations personnel during and following all credible accident conditions.

The ambient air temperature is controlled to prevent exceeding the allowable equipment qualification temperature for the equipment and instrumentation-in the control room. The OPERABILITY of this system in conjunction with control room design provisions is based on limiting the radiation exposure to personnel occupying the-control room to 5 rem or less whole body, or its equivalent.

This limitation is consistent with the requirements of General Design Criteria 19 of Appendix "A", 10 CFR 50.

i 1

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BEAVER VALLEY - UNIT 1 B 3/4 9-4 PROPOSED WORDING

ATTACHMENT B Question:

Applicant must provide identification of technical specifications for operability and surveillance of chlorine and radiation instrumentation

channels, actuation

logic, master relays and slave relays associated with automatic control room isolation on high chlorine and radiation signals.

Response

The control room area radiation monitoring instrumentation channels are specified in BVPS-2 Technical Specification (Tech spec) 3/4.3.3.1.

The LCO specifies the minimum number of channels operable, the applicable modes and action statements.

Surveillance for channel

check, channel calibration and channel function test are specified in Table 4.3-3.

These surveillances are conducted

shiftly, monthly and every 18 months through station procedures.

The control room isolation function on high radiation is included by the OPERABILITY criteria for the Control Room Emergency Habitability Systems as per the LCO from Tech Spec 3/4.7.7.1.

Verification of actuation of components for control room isolation on high radiation is demonstrated in the Tech specs by Surveillance 4.7.7.1.1.d.2 and 4.7.7.1.2.d.2 by verifying every 18 months that on a control room high radiation test signal from either

unit, the systems closes all series isolation ventilation system dampers.

These surveillances are conducted through station procedures.

The response time for control room isolation on high radiation will be added to the BVPS-2 Tech Specs in Table 3.3-5.

Similarly, for high

chlorine, the LCO from Tech Spec 3/4.3.3.7 specifies the minimum number of chlorine detection system

channels, the applicable modes and action statements.

Surveillance 4.3.3.7 specifies a

channel functional test every 31 days and a channel calibration at least once per 18 months for the chlorine detection system.

The response time for the chlorine system will be added to the LCO for the BVPS-2 Tech Spec 3/4.3.3.7.

These surveillances are conducted through station procedures.

Similarly to the high radiation

function, the control room isolation function on high chlorine is included by the OPERABILITY criteria for Control Room Emergency Habitability Systems in the LCO of Tech Spec 3/4.7.7.1.

Implicit in the definition of OPERABILITY (see Section 1.6 of the Tech Specs) is the assumption that all necessary attendant instrumentation,

controls, normal and emergency electric power systems or other auxiliary equipment that are required for the

' S ATTACHMENT'B'(Continued)

I system,-. subsystem,. train, component or device So perform its function (s).are. also-capable sof. performing their

_i related safety function (s).

This. includes the actuation.

logic, master-relays and slave relays 1 associated with the automatic control room isolation on'high chlorine.

This definition-is

. consistent. with: 'ther definition: (and-practice)'_ established-and implemented for'over ten years 1

for the operation of Beaver Valley; Unit 11.

Verification 'of actuation is demonstrated by surveillance

~

4.7.7.1.3.d.2 and 4.7.7.1.2.d.3

.through_ verification of-correct control isolation with

-a high chlorine _ test t

signal.

That portion.of the control. room.-isolation that

.goes through the Solid State. Protection System (SSPS)-is tested monthly on a.

staggered'. test. basis during functional testing.

Question:

How.does DLC. plan to ensure that the status or'a change in status (i.e., OPERABILITY /inoperability) of subsystems or components in the Control-Room Emergency Habitability System on one side of the -control 1 room'is adequately-relayed to the operators on the other side of the control-room.

Response

The Emergency Safeguard Equipment Checklist of' Station Administrative Procedure (SAP. 41) " Clearance Procedure" will be revised.

This ' revision will' require - the concurrence by initials of BVPS-1 'and BVPS-2 Nuclear Shift Supervisors prior to removal'from. service of-the following equipment from either unit:

1) 4160 kv bus AE 2) 4160 kV bus DF 3)

Emergency Diesel Generator-4)

Any equipment. that is a _part of.the. control Room Emergency Habitability. Systems Question:

Provide justification why an automatic:BISI indication is not warranted when output relay fuses.are removed to prevent inadvertent ESF' actuation per~the LCO 3.9.15.1'in the proposed Tech

' Spec on Control' Room Emergency Habitability Systems'when both units are shutdown.

Response

DLC does not expect to conduct this~ action more than once a

year.

The asterisk note will be modified-to state that.

this action will only be allowed for one Unit at a time..

This will ensure that all dampers.will be: fully operable to bring ~ fresh air into the control room.

In addition, at each of the output relay test panels on each unit, a L__ _

_-____m

__________m__:___,

~

4..

ATTACHMENT B (Continued).

permanent ~ caution ' tag will be installed near the output relay ' power fuses.. This caution ~ tag.will clearly define the following prior to fuse removal:

. At'BVPS-2 Control ~ Room 1)- Notify BVPS-1 Nuclear. Shift. Supervisor 2)

Isolate Intake and Exhaust Dampers (2HVC 201A(B)(C)(D)], -if thelother units chlorine detectors are inoperable.

3). Back-light

" Control 1 Room-Ventilation Isolation" pushbutton; at bypassed and inoperable status indication panel.

At BVPS-1 Control Room 1)' Notify BVPS-2 Nuclear Shift Superviso::

2)

Isolate Intake and Exhaust Dampers (VS-D-40-1A (B)(C)(D)],

if other units ' chlorine ' detectors are.

inoperable.

3)

Back-light

" Control Room Ventilation Isolation" pushbutton at Emergency Safeguard. Panel.

ML20214E345

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