ML20077M426

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Proposed Tech Specs Re Boron Dilution Mitigation Sys
ML20077M426
Person / Time
Site: Catawba  Duke Energy icon.png
Issue date: 08/06/1991
From:
DUKE POWER CO.
To:
Shared Package
ML20077M422 List:
References
NUDOCS 9108130349
Download: ML20077M426 (7)
v • d • e


Text

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Attachment 11 Technical Specification Revisions 91oe13o349 910806 _

PDR ALOCK 05000414 PDR p

l INSTRUMENTATION

-3 4 .3.3.19- BORON DILUTION MITIGATION SYSTEM ,

LIMITING CONDITION FOR OPERATION 3.3.3.12 As a minimum, two trains of the Baron Dilution Mitigation System shall be OPERABLE and operating with Shutcown Margin Alarm ratios set at less than or equal to 4 times the steady-state count rate.

APPLICABILITY: MODES 3, 4, ANO[

w ACTION:

(a) With one train of the Boron Oilution Mitigation System inoperable or not operating, restore the inoperable train 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 (1) suspend all operations involvira positive reaci.ivity changes and verify that valve NV-230 is closed and secured within the next hour, or j n (2) verify two Source Range Neutron Flux Monitors are OPERABLE with Alar. Setpoints less than or eoual to one-half decade"above the

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steady-state count rate and verify that the combined flowrate fro,%bothJesetor-Hakeup-VatW hmpris less than or ecual to I400-gpm (Mode 3) or 40- gpm (Mode er 5) within the next hour.

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(b) Wit hh o ' IMP n 0 lution Hitigation System inoperable ,

or not operating, restore tne inoperable trains to OPERABLE status within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, or h

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(1) suspend all operations involving positive reactivity changes j and verify that valve NV-230 is closed and secured within the v 6 '

next hour, or (2) verify two Source Range Neutron Flux Monitors are OPERABLE V with Alarm Setpoints less than or ecual to one-half decade aDove the steady-state count rate and verify that the combined flow rate 1 from both ReactWHik'ecDNterNmps% ess than or ecual to 1 - or 40-gpm (Mode h 5y within the next hour.

',200-60 gpm (Mode % 3)H- W o #r SURVEILLANCE REQUIREMENTS 4.3.3.12.1 Each train of the Boron Dilution Mitigation System shall be demon-strated OPERABLE by performance of:

(a) A CHANNEL CHECK at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, ,

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CATAWBA - UNITS 1 & 2 3/A 3 Amendment No.t. (Unit 1)

Amendment No. 1(Unit 2)

i INSTRUMENTATION l I

SURVEILLANCE '7 WIREMENTS (Continued) l (b) An ANALOG CHANNEL OPERATIONAL TEST at least once per 31 days, and I

(c) At least once per 18 months the BDMS shall be demonstrated'0PERABLE l by:

(1) Verifying that each automatic valve actuated by the BDMS moves to its correct position upon receipt of a trip signal, and (2) Verifying each reactor makeup water pump stops, as designed, upon receipt of a trip signal.

4.3.3.12.2 If using the Source Range Neutron Flux Monitors to meet the require-ments of Technical Specification 3.3.3.12, (a) The monthly surveillance requirements of Table 4.3-1 for the Source Range Neutron Flux Monitors shall include verification that the Alarm Setpoint is less than or equal to one-half decade (square root of 10) above the steady-state count rate.

'7m m comoined flow rate from both Reactor Makeup water Pumps shall be

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(b) The 3 verified as less than or equal to -20& gpm (Mode 3) or-80 gpm (Mode '8

-w- 5) at least once per 31 days. 15 0 or q 76 A -_ _e -

3/4 3-92b ni 1 CATAWBA - UNITS 1 & 2

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REFUELING OPERATIONS

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3/4.9.2 INSTRUMENTATION j J

LIMITING CONDITION FOR OPERATION 3.9.2.1 As a minimum, two trains of the Boron Dilution Hitigation System shall I be OPERABLE and operating with Shutdown Margin Alarm Ratios set at less than or equal to 4 times the steady-state count rate, each with continuous indication in the control room. l t [ b e2 0i i

APPL.JC ABILITY: MODh}<Q*j.-

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~, 1 5 R 1 i dj (a) With one or both trains of the Boron Dilution Mitigation System  ! v -

i inoperable or not operating, =

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immediately suspend all operations involving CORE ALTERATIONS 1

[j> ]j (1) or positive reactivity change 53 or 7

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j @ (2) verify that two Source Range Neutron Flux Monitors are OPERABLE ? a r and operating with Alarm Setpoints less than or equal to one-  ; :S i sT {* > 3 half decade (square root of 10) above the steacy-state count rate, each with continuous visual indication in the control d*

O t h, - 2 room and one with audible inoication in the control room and . $b UM~ one with aud1ble indication in the containment within the / (- ,

j next hour, f ,_

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(b) With both trains of the Boron Dilution Mitigation System inoperabi -

  • or not operating and one of the Source Range Neutron Flux Monitors .D' j

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x inoperable or not operating immediately suspena all operations p [

involvingcoreALTERATIONSorpositivereactivityenangeg j  ;

(c) With both trains of the Boron Oilution Mitigation System inoperabl i ^i or not operating and both of the Source Range Neutron Flux Monitor'  %

inoperable or not operating, determine the boron concentration of j { ,'

the Reactor Coolant System at least once per 12 nours g w

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(d) T h e-prov4 +4on rr-of-4pec444 ca t4on- Mr4-4 r e-no t-a pp44 c a b le _ [t

-- , - - y y- L SURVEILLANCE REOUIREMENT j j o n !

A.9.2.1.1 Each train of the Boron Dilution Mitigation System shall be demon D  ? ,!

strated OPERABLE by performance of: } .

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(a) A CHANNEL CHECK at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, (b) An ANALOG CHANNEL OPERATIONAL TEST within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> prior to the initial start of CORE ALTERATIONS and (c) An ANALOG CHANNEL OPERATIONAL TEST at least once per 31 days.

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CATAWBA - UNITS 1 & 2 3/4 9-la Amendment g9(Unit 1)

REFUELING OPERATIONS SURVEILLANCE REOUIREMENTS (CONTINUED)

(d) At least once per 18 months the BOMS shall be demonstrated OPERABLE by:

(1) Verifying that each automatic valve actuated by the BDMS moves to its corrset, position upon receipt of a trip signal, and (2) Verifying each reae. tor makeup water pump stops, as designed, upon receipt of a trip signal.

4.o.2.1.2 If using the Source Range Neutron flux Monitors to meet the require-me .ts of Technical Specification 3.9.2, each Source Range Neutron Flux Monitor shall be demonstrated OPERABLE by performance of:

(a) A CHANNEL CHECK at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, (b) An ANALOG CHANNEL OPERATIONAL TEST within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> prior to the initial start of CORE ALTERATIONS or within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> after declaring the BORON DILUTION MITIGATION SYSTEM inoperable, and (c) An ANALOG CHANNEL OPERATIONAL TEST at once per 7 days.

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CATAWBA - UNITS 1 & 2 3/4 9-lb Amendment No. 7(Unit 1)

Amendment No. (Unit 2) i

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Attachment til Summary of Proposed Changes

)

LIST OF CilANGES )

1. Technical Specification (TS) 3.3.3.12 (a)(2) and (b)(2) and TS 4.3.3.12.2 (b) have been changed to reDect the new required Howrates.
2. TS 3.9.2.1 (a)(1) and (a)(2) have been modified and TS 4.9.2.1.2 (d) has been added to include isolating or limiting the flowrate from the Reactor Makeup Water Pumps,
3. ACTION (d)is being removed from TS 3.9.2.1 because it is no langer required based on the issuance of Arnendment 48/41 which was made using the guidance of Generic Letter 87-09.
4. The footnote in TS's 3.3.3.12 and 3.9.1.2 that refers to applicability for Unit 2 has been removed since this time has passed.
5. The addition of "(square root of 10)" to TS 3.3.3.12 (a)(2) and (b)(2) is to provide additional clarity and consistency with TS's 4.3.3.12.2 (a), 3.9.2.1 (2) and 4.9.2.1.2 (c).
6. The removal of "3/4.3.3.12" from the title of the TS provides consistency with other

-TS in this section.

7. The spelling of the word "least" has been corrected in TS 4.9.2.1.2 (c).
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