ML20094A906

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Proposed Tech Spec Changes Re Accident Monitoring Instrumentation Limiting Conditions for Operation for Noble Gas Effluent Monitors,Containment High Radiation Monitors & Containment Hydrogen Monitor
ML20094A906
Person / Time
Site: LaSalle  Constellation icon.png
Issue date: 07/25/1984
From:
COMMONWEALTH EDISON CO.
To:
Shared Package
ML20094A890 List:
References
NUDOCS 8408060153
Download: ML20094A906 (9)
v • d • e


Text

. . . _ . . _ _ . .. ..

. , ATTACHMENT 2

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INSTRUMENTATION

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k ,..' :- ACCIDENT MONITORING INSTRUMENTATION I -

.i LIMITING CONDITION FOR OPERAfION

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3.3.7.5 The accident monitoring instrumentation channels shown in Table 3.3.7.5-1 shall be OPERA 8LE.

] APPLICABILITY: OPERATIONAL CONDITIONS 1 and 2.

'1 t ACTION:

a. With the number of bP RABLE accident monitoring instrumentation channels less than th Required Number Of Channels shown in Table r 3.3.7.5-1, restore the operable channels to OPERABLE status -

~

within 7 days or be in at east HOT SHUTDOWN within the next .

12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. _

b. With the number of OPERABLE ac ' dent monitoring instrumentation channels m less than the Minimum Channels O BLE requirements of Table 3.3.7.5-1,

~ v restore the inoperable channel (s) 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 SHUTDOWN withi the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

.' s SURVEILLANCE REQUIREMENTS 4.3.7.5 Each of the above required accident monitoring instrumentation

! channels shall be demonstrated OPERABLE by performance of the CHANNEL CHECK and CHANNEL CALIBRATION operations at the frequencies shown in Table 4.3.7.5-1.

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(A),'4k. one. cc McM., A CC.' dent MO OO Nd( IMI ""A' N ha,sdo 190

.l. . (( .i. - t TABLE 4.3.7.5-1 - l , 5 ACCIDENT MONITORING INSTRUMENTATION SURVEILLANCE REQUIREMENTS l

v. f

? CilANNEL CHANNEL Ei CllECK CALIBRATION r I , INSTRt#tfHT D l l c g O j M g Steactor Vessel Pressure 1. R (\

2. Reactor Vessel Water Level M *

% n l'i j l

3. Suppression Chamber Water Level M R ,

- y $, s

4. Suppression Chamber Water Temperature M R Q) fgi f
5. Suppression Chamber Air Temperature M R .

() g . R F. Primary Containment Pressure M '

6. Ci M R o

N W 7. Drywell Air Temperature - u T 8. Drywell Oxygen Concentration M 'R , . k' " N m Y .M Q* b Drywell Hydrogen Concentration Analyzer and Monitor l

9.  ?

R El \ 10. Primary Containment Gross Gamma Radiation M . M R

11. Safety / Relief Valve Position Indicators I:.

M R

12. Noble Gas Monitor', Main Stack ,

i M R

13. Not:1e Gas Monitor, Standby Gas Treatment System Stack "Usingsamplegascontainingfourvolumepercenthydrogen,balancenitroden. l'

? s q . ~-- ( L ~. .-. . .- INSTRUMENTATION

t. .

ACCIDENT MONITORING INSTRUMENTATION LIMITING CONDITION FOR OPERATION 3.3.7.5 The acciden,t monitoring instrumentation channels shown in Table 3.3.7.5-1 shall be OPERABl:E. APPLICABILITY: OPERATIONAL CONDITIONS 1 and 2. ACTION: _ _ , , _

a. With the number of CRABLE accident monitoring instrumentation
  • channels less than th Required Number Of Channels shown in Table -

3.3.7.5-1, restore the operable channels to OPERABLE status , within 7 days or be in at east HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

b. With the number of OPERABLE ac ' dent monitoring instrumentation channels less than the Minimum Channels O BLE requirements of Table 3.3.7.5-1, restore the inoperable channel (s) 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 SHUTDOWN withi he next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

SURVEILLANCE REOUIREMENTS * * * * - - 4.3.7.5 Each of the above required accident monitoring instrumentation channels shall be demonstrated OPERABLE by, performance of the CHANNEL CHECK .and CHANNEL CALIBRATION operations at the frequencies shown in Table 4.3.7.5-1. Wik out.ot- M ore A cci b ed. N 0"*h d*' 5"'ilm MU**> N Q""* N juo(< ads , +s\e<. 4<. ACTLOW rw) atred . Ta le 3.3.7.S-I-e -( t LA SALLE - UNIT 2 3/4 3-69 e

heiaim -

e es' ~-- 7 -TABLE 3.3.7.5-1 9 - ACCIDENT MONITORING IM' nUMENTATION u- REQUIRED MINIMUM ,7, NUMBER OF CHANNELS OPERABLE ACTIOM CHANNELS E 2 1 80

1. Reactor Vessel Pressure 2 1 N
2. Reactor Vessel Water Level ,

1 TO 2

3. Suppression Chamber Water Level 7, 1/we11 7, 1/we11 TO _ _
4. Suppression Chamber Water Temperature 2 1 I.O
5. Suppression Chamber Air Temperature 2 1 30 w 6. Drywell Pressure 1 80 D Drywell Air Temperature 2

w 7. .'s 2 1 30 o 8. Drywell Oxygen Concentration

  • 1 IM 2
9. Drywell' Hydrogen Concentration Analyzer" and Monitor '

1 Il 2

10. Primary Containment Gross Gamma Radiation 1/ valve 1/ valve 80
11. Safety / Relief Valve Position Indicators 1 1 8/
12. Noble Gas Monitor, Main Stack 1 1 8/
13. Noble Gas Monitor, Standby Gas Treatment System Stack A

Actuated after LOCA.

  • %s e-e

J* - Table 3.3.7.5-1 (Continued) ACCIDENT MONITORING INSTRUMENTATION ACTION STATEMENTS ACTION 80 -

a. With the number of OPERABLE accident monitoring instrumentation -

channels less than the Required Number of Channels shown in Table 3.3.7.5-1, restort the inoperable channel (s) to CPERABLE sta.tus within 7 days or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />,

b. With the number of OPERABLE accident monitoring instrumentation channels less than the Minimum Channels OPERABLE requirements of Table 3.3.7.5-1, restore the ino'perable channel (s) to OPERABLE .

status within 48' hours or be in at least HOT SHUTDOWN within the . next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. ACTION 81 - With the nunber of OPERABLE channels less than required by the minimum channels OPERABLE requirements, initiate the preplanned 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:

1) either restore the inoperable channel (s) to OPERABLE status within 7 days of the , event, or s ,

, 2) prepare and submit2'awithin Special Report to the Commission pursuant to 14 days following the event outlining. Soccification 4<e: /~~~ fee action taken, the 'cause of the inoperability and the plans S 6.C and schedule for restoring the system to OPERABLE status. ACTION 82 - a. With the number of OPERABLE channels one less than the required nunber of channels shown iin table 3.3.7.5-1, restore the inoperable channel to OPERABLE status within 30 days or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. *

b. With the nunber of OPERABLE channels less then the minimum OPERABLE requirements of Table 3.3.7.5-1, restore at least one channel to OPERABLE status within 7 days or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

LASAu.E - UMT L 3k3-70a., n .. . .. .  ? 3) ( n . .a . . .... . . .. t. . i .. . . . .. . . . . ... .. i TABLE 4.3.7'.5-1 l g .: ACCIDENT HONITORING INSTRUMENTATION SURVElliANCE REQUIREMENTS dI o- . l 9

  • M CilANNEL CilANNEL f[ O INSTRUMENT CllECK CAllBRATION y D E E 1. Reactor Vessel Pressure H R 9 D '

Us m a m 2. Reactor Vessel Water Level H R i P

3. Suppression Chamber Water Level H R D
4. Suppression Chamber Water Temperature H R g y-M
5. Suppression Chamber Air Temperature H R Tl RI
6. Primary Containment Pressure H R k, i g 7. Drywell Air Temperature
  • H R g, u

w 8. Drywell Oxygen Concentration H R g F '1 9. Drywell llydrogen Concentration Analyzer and Honitor M Q* T ?

10. Primary Containmerit Gross Gamma Radiation H R N
11. Safety / Relief Valve Posillod Indicators e i .

M R C.7

12. Hohle Gas Monitor, Main Stack H R T .

... . . ... : .: : i. . n2 !

13. Hoble Gas Honitor, Standby Gas Treatment System Stack H R p,.,

.~ . . . . , W - "Using samule gas containing four volume percent hydrogen, balance nitro 0en. Q m C3 m i .e . . . - . i... .. .. .. . 9 .... ~~ ~ ATTACHMENT 3 Significant Hazards Consideration Commonwealth Edison has evaluated the proposed Technical Specification Amendment and determined that it does not represent a significant hazards consideration. Based on the criteria for defining a significant hazards consideration established in 10CFR50.92, operation of -LaSalle County Station Units 1 and in accordance with the proposed amendment will not: .1) Involve a significant increase in the probability or consequences of an accident previously evaluated because the instrumentation provides information helpful to the operator during an accident but the revised actions still provide sufficient assurance that the required -information will be available when needed. 2)- Create the possibility of a new or different kind of accident from any accident previously evaluated because this change does not -involve removing any required instrumentation. Therefore, no new or dif ferent kind of accident, will occur.

3) Involve a significant reduction in the margin of safety because this change ~does not revove the requirement for accident monitoring capability and is consistent with the times allowed to restore equipment to operable status in a reasonable period of time.

Based on the preceding' discussion, it is concluded that the proposed system change clearly falls within all acceptable criteria with respect to the system or component, the consequences of previously evaluated accidents will not be increased and the margin of safety will not be decreased. Therefore, based on the. guidance provided in the Federal Register and the criteria established in 10CFR50.92e), the proposed change does not constitute a significant hazards consideration. 9010N m

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