ML20086L264
| ML20086L264 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 12/06/1991 |
| From: | UNION ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML20086L262 | List: |
| References | |
| NUDOCS 9112160114 | |
| Download: ML20086L264 (7) | |
Text
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agg'ISION f.tsTsysTEas I
2 3/4.7.12 AREA TEMPERATURE H3NITORING
(!HITING CONDITION FOR OPERATION 7
3.7.12 The temperature limit of each area given in Table 3.7-4 shall not be exceeded for more thysase gs or by more than 30*F( 2 s +F n,. Elechc. L 8 ho 1%e t>< ftm %.s r APPLICABILITY: Whenever the eculpment in an affected area is required to be UFGXBLE.
ACTION:
a.
With one or more areas exceeding the temperature lialt(s) shown in Table 3.7-4 for more thu 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, prepare and submit to the Commis-sion within 30 days, pursuant to Specification 6.9.2, a Special Report that provides a record of the cumulative tia.e and the amount by which the temperatyre in the affected area (t) cAceeded the limit (e,) and an analysis to demonstrate the continued CPERASILITY of the affected equipr.ent. The provisions of Specifications 3.0.3 and 3.0.4 are not applicable, b.
With one or more areas exceeding the temperature limit (s) show, in Table 3.7-4 by more than 30*F prepare and subctit a Special Report as required by ACTION a. abov and within 4 hou s either rest:.re the area (s) to within the tempe ture limit (s) or declare the equi p6't in the affected area (s) perable.
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0 SURVEILLANCE REOUIREMENTS i
4.7.12 The temperature in each of the areas shown in Table 3.7a4 shall be determined to be within its limit at least once per 12 huurs.
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l CALLAWAY - UNIT 1 3/4 7-37 9112160114 911206 PDR ADOCK 05000403 PDR P
REVisl0N I
TABLE 3.7 4 AREA TEMPER TURE MONITORig MAX! MUM TEMPERATURE i
AREA LIMIT (*F).
j 1.
ESW Pump Room A 119 2.
ESV Pump Rcom B 119 3.
Auxiliary Feedwater Pump Room A 119 4.
Auxiliary Feedwater Pump Room B 110 5.
Turbine-Oriven Auxiliary Feedwater Pump Room 147 f
- 6. -
E$F Switchgear Room 1-87 7..
ESF Switchgear Room !!
$7 S..
RHR Pump Room A 119 9.
RHR Pump Roorn 0 119 I
- 10. CTHT Sptcy Pump Roem A 119
- 11.. CTNT Sprap Pump Room B M9
- 12. Safety injection Pump Room A 119 T
- 13. ' Safety injection Pump Room B 119
/
14 Centrifugal Charging Pump Room A 119
- 15. Centrifugal Charging Purep Room B 113
- 16. Electrical Pene* ration Room A
-M1- /06
- 17. Electrical Penetration Room B
%) /06
- 18. Component cooling Water Room A 119 1r..
Component cooling Water P.oom B 119
- 20. Diesel Generator Room A 119
- 21. Diesel Generator Room B 119
- 22. Control Room 84 i.
L CALLAWAY --UNIT I 3/4 7-38 4
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5 PLANT SYSTIMS l
BASES l
3/4.7.12 AREA TEMPERATURE MONITORING The area temperature limitations ensure that safety-related equip?.ent will not be subjected to temperatures in excess of their environceotal qualif.ication _.
temperatures. Exposure to excessive temperatures may degrade equipment and can cause a bss of its OPER/31LITY. The tempereture limits include an allowance i
for instrument error of,+3*F, agce,,+ for g /ec,6.fco / f,,, f,,yfo r e
Acom.A a n 4 Af.
Th ern reo m r have an a fa.e a a.+ Oca*f card 4A P1a.Gntum r~dem SmfM
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CALLAWAY UNIT 1 B 3/4 7-8 Amendnent No. 30
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4 UhNRC -
Page 1 of 2 i
I SAFETY EVAWATIOR L
This Technical Specification amendment is being made to incretise f
the maximum room temperature for the Electrical Penetration Rooms, as contained in Table 3.7 4.
The area temperature limitations ensure that safety-related equipment will not be subjected to
- temperatt.res in excess of their environmental qualification
= tenperatures.
The modification to Technical Specification 3/4.7.12, Action Statement b in to maintain the absolute maximum temperature limit for the Electrical Penetrations Rooms at 131*F (106*F + 25'P).
The roodification to Technical Specification Table 3.7-4 will show a maximum temperature limit for the Electrical Penet. ration Rooms a
of 106*F.
.The revision to Dases Section 3/4.7.12 is editorial in l
nature and provides additional information on this change.
I The temperature limits l's Table 3.7-4 were originally _ derived by
- assuming the. rooms trould be at their uaximum normal temperatures at the start.of a Design Basis Accident.. An allowance of 13*F-was then applied to account for any instrument errors.
Therefore, the current maximum normal Electrical Penetration Room temperature of
- 104*r is reduced by 3*F (for conservatism) and listed in Table 3.7i4 as 101*F.
To-ensure that the Technical Specification limit is 'never exceeded, an alarm setpoint at 97*F was establahen.
During the summer Months,_the temperature of the Electrical Penetration Rooms can exceed the. alann setpoint.
When this occurs; p?. ant personnel are sent to the area to monitor temperature with highly accurate hand held instruments.
If tre temperature approaches the Technical Specification liMt of 10.'F, the Electrical Penetration.toom doors are cpened:and temporary fans nrecinstalled to reduce the temperature of the rooms.
- Additional personnel are also' required to monitor the room i
temperature and close-the doors, if necessacy.
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- "'o alleviate this possible Technical Specification' compl:
56 ace
' concern and to netter allocate plant resources, Union Electric-proposes _to change ths_ Technical Specifications by ra191ng the-maximum _ temperature for the. Electrical Penetration Rooms to 106aF.
The alarmesetpoint, as described in the Bases would be 103*F.
If:
i m
this alarm setpoint is reached room temperatures would be monitored, doors could be opened and temporary fans used to reduce the temperature in the Electrical Penetration Room prior to exceeding-the;106aF limit (housver, this limic should never be reached during normal operation of the plant),
u i
To support this change, Union Blectric performed a calculation which shova-that raising the.nonnal maximum temperature 'of the Electrical Penetration l Rooms to 106*F will have a_ negligible affect on the surrounding rooms.
The increased heat loads are insignifi-L cant -(less than a = 2% _-increase).
This calculation also shows that
~ there is-no impact _on DBA temperatures.
The. Electrical Penetration L
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ULNRC-Page 2 of 2
. Rooms are' assumed to reach a post-accident temperature of 106'F.
The higher initial start temperature will only increase the port-accident cooling loads by 0.2%, which is again negligible.
The Electrical Penetration Rooms are considered a harsh environment for radiation only.
This is because following an accident, temperature remains less than 110'F (mild environment upper temperature limit) and pressure and humidity are unchanged.
The qualified-life for the equipment in these rooms is based on the-room temperature being maintained continuously at the maximum normal temperature of 104 *F.
Exceeding 104*F for short durations during the summer months does not-impact EQ lives _because the lives are based on a continuous temperature of 104*F throughout the year.
However, the qualified life of affected components will be-re-evaluated based on 106"F continuous temperature.
The' proposed change to Technical Specification 3.7.17, Table 3.7-4, and Bases 3/4.7.12 does not involve an unreviewed safety question because operation of_Callaway Plant with this change
+
would-not:
.1.
Increase the probability of occurrence or the consequences of an accident or malfunction of equipment important to safety previously evaluated in the safety analysis report.
Raising the maximum normal temperature of the Electrical Penetration Rooms'to 106*F will have no adverse affects on the equipment, therefore there will be no adverse affect on the accident analysis..
.2.
Create a possibility for an accident or nalfunction of a t
different type-than any previously evaluated in the safety a
analysis report.
There is no new type of accident or malfunction being'. created and the method and manner of plant operation remains unchanged.
Raising-tho maximum room-i
?
temperatures 2'F will-have: negligible affect:on the plant.
3.
-Reduce the margin of safety as defined in the basis for.any 7
-technical specification.
This is-based on the fact that no plant design changes are involved.
The_ weighted averageiroom-tempecature should not-exceed 104*F,-however, the EQ life for the_ equipment will be re-evaluated.to-a. weighted average room temperature of 106*F..-Also, the maximumiallowed temperature for _these rooms, aus discussed in -ACTION Statement b, remains at.131*F.
Given;the above' discussions as well as those presented in the Significant Hazards Evaluation,-the proposed-change does not adversely' affect or endanger the-health or safety of-the general.
public_or' involve a significant safety hazard.
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ULNRC-Page 1 of 1 S.MRLELCMT 11AZARD_llVNA%TLRN This amendment application is being requested to increase the maximum room tempfrature for the Electrical Penetration Rooms.
The area temperature linits ensure that safety-related equipment will not be subjected to temperature which could cause degradation.
The modification to Technical Specification 3/4.7.12, Action Statement b is to maintain the maximum temperature limit for the Electrical Penetrations Rooms at 131*F.
Technical Specification Table 3.7-4 will be modified to show an increase in room temperature (to 106'F) for the Electrical Penetration Rooms.
Bases Section 3/4.7.12 will be revised to add discussion on the temperature limits for these rooms.
A review of the surrounding rooms determined that increasing the maximum normal temperature for the Electrical Penetration Roons by 2*F would have negligible affect.
The small increase in normal naximum room temperature will not affact the operability of the equipment within the room nor reduce any qualified lives.
1.
This change does not involve a significant increase in the probability or consequences of an accident previously evaluated.
This amendment ensures that a Technical Specification compliance situation does not arise.
Since the safety-related equipment, contained in the Electrical Penetration Rooms will not be adversely affected, no accidents will be affected.
2.
The change does not create the possibility of a new or different kind if accident from any previously evaluated.
There is no new type of accident or malfunction being created 2
and une method and maaner of plant operation remains the same.
This change is based upon engineering calculations which show the net changes has a negligible affect on the plant.
3.
This change does not involve a significant reduction in a margin of safety.
The margin of safety is unaffected since no design change is required and no accident has been affected.
As dircussed above, the proposed change does not involve a significant increase in the probability or consequences of an accident previously evaluated or create the possibility of a new or different kind of accident from an previously evaluated.
This change does not result in a significant reduction in a margin of safety.
Therefore, it has been determined that the proposed change does not involve a significant hazards consideration.
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ULNRC+
Page 1 of 1 ENHE0lMHTML.CQRSlDERAHOE This amendment application is being requested to increase the maximum room temperature for the Electrical Penetration Rocms.
The area temperature 1.imits ensure that safety-related equipment will not be subjected to temperature which could cause degradation.
The modification to Technical Specificatlon 3/4.7.12, Action Statement b is to maintain the maximum temperature limit for the i
Electrical Penetrations Rooms at 7.33*F.
Technical Specification Table:3.7 4 will be modified to show an increase in room temperature (to 106*F)- for the Electrical -Penetration Rooms' J
Bases Section 3/4.'7.12/will be~ revised to add discussion on-the temperature limits for these rooms.-
A review of the. surrounding rooms determined that increasing the-.
maximum: normal temperature for the Electrical Penetration Rcoms by-2*F would have negligible affect.
The small increase in normal maxirram room temperature will not af fect the operability of the equipment within the room nor reduce any qualified lives.
{
f The proposed amendment involves changes with respect to the use o!
facility components lucated within the restricted area as defined
-in 10 CFR Part 20.
Union Electric has determined that the proposed amendment-involves no.significant increase in the
. amounts,-and no significant change in the-types, of any effluente that may be released offsite and that.there is no significant
-increase in individual or cumulative' occupational radiation exposure.- Accordingly, the proposed amendment meets the
-eligibil*ty criteria for categorical exclusion set forth in 10 CFR 51.22 (c) (9).
Pursuant to 10 CFR 51.22-(b) no environmental
- impact statement or environmental assessment need be prepared in-Lconnection with the issuance of this amendment.
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