ML19324C345

Proposed Tech Specs 3.3.3.6 & 3.6.4.1 Re Accident Monitoring Instrumentation & Containment Hydrogen Monitors

ML19324C345
Person / Time
Site:	Millstone
Issue date:	11/02/1989
From:	NORTHEAST NUCLEAR ENERGY CO.
To:
Shared Package
ML19324C341	List: ML19324C340 ML19324C345
References
B13391, NUDOCS 8911160153
Download: ML19324C345 (3)

Text

.

l '.  !

i Docket No. 50 423 S13391 {

j l

e j g.

t  ;

i i

\

l t

F Attachment 1 Millstone Nuclear Power Station, Unit No. 3  !

Proposed Revision to Technical Specifications Containment Hydrogen Monitors .

I t

1 1

l-November 1989 l

8911160153 891102 ADOCK05000,g3

{DR l

5

I ..

INSTRUMENTATION

' ACCIDENT MONITORING INSTRUMENTATION LIMITING CONDITION FOR OPERATION ,

3.3.3.6 The accident monitoring instrumentation channels shown in Table 3.310 shall be OPERABLE.

APPLICABILITY: MODES 1, 2, and 3.

ACTION:

a. With the number of OPERABLE accident monitoring instrumentaticn channels except the containment area high range radiation monitor, and the containment hydrogen monitor less than the Total Number cf l Channels shown in Table 3.3-10, restore the inoperable channel (s) to OPERABLE status within 7 days, or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in at least HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

b. With the number of OPERABLE accident monitoring instrumentation channels except the containment area-high range radiation monitor, and the containment hydrogen monitor less than the Minimum Channels l OPERABLE requirements of Table 3.3-10, restore the inoperable channel (s) to OPERABLE status within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in at least HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />,

c. With the number of OPERABLE channels for the containment area-high range radiation monitor less than required by either the total or the Minimum Channels OPERABLE requirements, initiate an alternate method of monitoring the appropriate parameter (s), within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, and either restore the inoperable channel (s) to OPERABLE status within 7 days or prepare and submit a Special Report to the Commis-sion, pursuant to Specification 6.9.2, within 14 days that provides actions taken, cause of the inoperability, and the plans and sched-ule for restoring the channels to OPERABLE status.

l

d. With the number of OPERABLE channels for the containment hydrogen monitors less than the total number of channels shown in Table 3.3-10, restore the inoperable channel to OPERABLE status within 30 days or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in at least HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />. With the l number of operable channels for the containment hydrogen monitors

, less than the minimum channels OPERABLE requirement of Table 3.3-10, -

l restore the inoperable channel (s) to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in at least HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />,

e. The provisions of Specification 3.0.4 are not applicable.

SURVEllLANCE RE0VIREMENTS _ _ _

4.3.3.6 Each accident monitoring instrumentation channel shall be demon-strated OPERABLE by performance of the CHANNEL CHECK and CHANNEL CALIBRATION l

. at the frequencies shown in Table 4.3-7.

l MILLSTONE - UNIT 3 3/4 3-59

g ..

t CONTAINMENT SYSTEMS 3/e.6.4 COMBUSTIBLE GAS CONTROL HYDROGEN MONITORS llMITING CONDITION FOR OPERATION 3.6.4.1 Two independent containitent hydrogen monitors shall be OPERABLE.

APPLICABILITY: MODES 1, 2, and 3 ACTION:

a. With one hydrogen monitor inoperable, restore the inoperable monitor to theOPERABLE status next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in at within 30 days least HOT or be inwithin SHUTDOWN at least HOT STANDBY the following 6 w hours,

b. With both hydrogen monitors inoperable, restore at least one monitor to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in at least HOT SHUTDOWN within the l following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

c. The provisions of Specification 3.0.4 are not applicable. l SVRVEILLANCE RE0VIREMENTS 4.6.4.1 Each hydrogen monitor shall be demonstrated OPERABLE by the performance of a CHANNEL CHECK at least once por 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, an ANALOG CHANNEL OPERATIONAL TEST at least once per 31 days, and at least once per 92 days on a STAGGERED TEST BASIS by performing a CHANNEL CALIBRATION using sample gas containing:

a. One volume percent hydrogen, balance nitrogen, and

b. Four volume percent hydrogen, balance nitrogen, i

1 l

l l

l MILLSTONE - UNIT 3 3/4 6-35