ML20100G800

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Proposed Tech Spec Re Chlorine Setpoints,Control Room Emergency Ventilation Sys Flow Rate,Insertion of Control Room Monitoring Info & Elimination of Date Associated W/ Reg Guide 1.95
ML20100G800
Person / Time
Site: Millstone Dominion icon.png
Issue date: 04/02/1985
From:
NORTHEAST NUCLEAR ENERGY CO.
To:
Shared Package
ML20100G798 List:
References
RTR-REGGD-01.095, RTR-REGGD-1.095 TAC-57263, NUDOCS 8504080430
Download: ML20100G800 (6)
v • d • e


Text

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t -1 Docket No. 50-336 Attachment 1 Millstone Nuclear Power Station, Unit No. 2 Proposed Revisions to Technical Specifications Control Room Habitability Modifications c

April,1985 8504080430 850402-PDR ADOCK 05000336 p PDR1

INSTRUMENTATION CHLORINE DETECTION SYSTEMS-

+

LIMITING CONDITION FOR OPERATION

, 3.3.3.6 Two separate and independent chlorine detection systems, with their alarm / trip setpoints adjusted to a chlorine concentration of d 1 ppm, shall be OPERABLE with the detectors located adjacent to control room outside air 4

intake duct.  !

APPLICABILITY: MODES 1, 2, 3 and 4.-

ACTION:

a. With one chlorine detection system inoperable, restore the inoperable detection system to OPERABLE status within 7 days or

-within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> initiate and maintain operation of the control room emergency ventilation system in the recirculation mode of operation.

i b. With no chlorine detection system OPERABLE, within I hour

! Initiate and maintain operation of the control room emergency ventilation sy.em in the recirculation mode of operation.

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c. The provisions of Specification 3.0.4 are not applicable.

SURVEILLANCE REQUIREMENTS 4.3.3.6 Each chlorine detection system shall be verified energized at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and demonstrated OPERABLE by performance of a CHANNEL CALIBRATION at least once per 18 months.

4 5

MILLSTONE - UNIT 2 3/4 3-42

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' INSTRUMENTATION BASES-3/4.3.3.6 CHLORINE DETECTION SYSTEMS The operability of the chlorine detection systems ensures that an 1

- accidental' chlorine release . will . be detected promptly and the necessary

. protective. actionsiwill be -automatically initiated to provide protection for control room personnel. Upon detection of a high concentration of chlorine, the

. control room emergency ventilation system will automatically isolate the control room and initiate its operation in the recirculation mode of operation to provide

, the required protection. The chlorine detection systems required by this specification are consis*ent with the recommendations of Regulatory Guide 1.95,

" Protection of - Nuclear Power Plant Control Room Operators Against an Accidental Chlorine Release". l i

3/4.3.3.7- FIRE DETECTION INSTRUMENTATION OPERABILITY of the fire detection instrumentation ensures that adequate warning capability is available for the prompt detection of fires. This capability

is required in order to detect and locate fires in their early stages. Prompt

! detection of. fires will reduce the potential for damage to safety related equipment and is an integral element in the overall facility fire protection

. program.

.In the event that a portion of the fire detection instrumentation is

inoperable, the establishment of frequent fire patrols in the affected areas is
required to provide detection capability until the Inoperable instrumentation is
restored to OPERABILITY.

2 3/4.3.3.8 ACCIDENT MONITORING INSTRUMENTATION' i'

The OPERABILITY of the accident monitoring instrumentation-ensures that suf ficient information is available on selected plant parameters to monitor and assess these variables during and following an accident. This capability is

[ consistent with the recommendations of NUREG-0578, "TMI-2 Lessons Learned Task Force Status Report and Short-Term Recommendations". ,

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l MILLSTONE - UNIT 2 B 3/4 3-4 i

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PLANT SYSTEMS 1

SURVEILLANCE REQUIREMENTS (Continued) d

'l. Verifying that the cleanup system satisfies the in-place testing acceptance criteria and uses the test procedures of Regulatory Positions C.S.a, C.5.c and C.S.d of Regulatory Guide 1.52, Revision 2, March 1978, and the system flow rate is 2500 cim 3 10%.

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 l 1.52, Revision 2, March 1978, meets the laboratory testing

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criteria of Regulatory Position C.6.a of Regulatory Guide 1.52, 2

Revision 2, March 1978. The carbon sample shall have a j removal efficiency of E95 percent.

a

3. Verifying a' system flow rate of 2500 cfm1 10% during system

, operation.when tested in accordance with ANSI N510-1975.

1 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 af ter 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 Regulatory Position C.6.a of Regulatory Guide 1.52, Revision 2, March 1978.'

4 e.- At least once per 18 months by:

4

1. _ Verifying that the pressure drop across the combined HEPA filters and charcoal adsorber banks is less than 6 inches Water Gauge while operating the system at a flow rate of 2500 cfm i 10%.

s I 2. 1 Verifying that on a recirculation signal, the system automatically switches into a recirculation mode of operation with flow through th'e HEPA filters and charcoal adsorber banks.

~f. Af ter each complete or partial replacement of a HEPA filter bank by verifying that the HEPA filter banks remove greater than or equal to 99% of the DOP when they are tested in-place in accordance with '

ANSI N510-1975 while operating the system at a flow rate of 2500 cfm + 10%. I i

' l 1

MILLSTONE - UNIT 2. 3/4 7-17 I 1

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PLANT SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) 1

g. Af ter each complete or partial replacement of a charcoal adsorber bank by verifying that the charcoal adsorbers remove greater than or equal to 99% of a halogenated hydrocarbon refrigerant test gas when they are tested in-place in accordance with ANSI N510-1975 while operating the system at a flow rate of 2500 cfm 1 10 % l 4

MILLSTONE - UNIT 2 3/4 7-18

TABLE 3.3-6 RADIATION MONITORING INSTRUMENTATION MINIMUM CHANNELS . APPLICABLE ALARM / TRIP MEASUREMENT INSTRUMENT OPERABLE MODES SETPOINT RANGE ACTION 3

P

'g 1. AREA MONITORS O

$ a. Spent Fuel Storage i Criticality Monitor 2

  • d100 mR/hr 10 10+4 mR/hr 13 and 15 3 e and Ventilation 5 System Isolation Hi .

" b. Control Room Isolation 1 ALL MODES 6 2 mR/hr 10 104 mR/hr 16 l

2. PROCESS MONITORS
a. Containment 1 ALL MODES 6 the value 10 - 10+6 cpm 14 and (a) . .

Atmosphere-Particulate determined in

, accordance with l

specification 4.3.2.1.4.

i b. Containment 1 ALL MODES S the value 10 - 10+6 cpm 14 and (a)

Y- Atmosphere-Gaseous determined in ,

" accordance with Specification 4.3.2.1.4.

  • With fuel in storage building.

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