ML17158A552
| ML17158A552 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 10/28/1994 |
| From: | Holahan G Office of Nuclear Reactor Regulation |
| To: | Larkins J Advisory Committee on Reactor Safeguards |
| References | |
| NUDOCS 9411040285 | |
| Download: ML17158A552 (3) | |
Text
" October 28, 1994 MEMORANDUM TO:
Dr. John T. Larkins, Executive Director Advisory Committee on Reactor Safeguards (ACRS)
FROM:
SUBJECT:
Gary M. Holahan, Director Division of Systems Safety and Analysis Office of Nuclear Reactor Regulation DRAFT SAFETY EVALUATION:
LOSS OF SPENT FUEL POOL COOLING EVENTS AT SUSQUEHANNA STEAM ELECTRIC STATION During printing of.the draft safety evaluation, which was transmitted to you under letter dated October 24, 1994, Table 5.E and Table S.F were inadvertently truncated.
I have attached a complete copy of these two tables for your review and for the Committee's consideration.
Attachments:
Table 5.E and Table 5.F of the Draft Safety Evaluation CONTACT:
G. Hubbard 504-2870 DIST BU 0
GHubbard AThadani
'PDR JLyons JShea CCentral File~
SWest CMcCr acken SJones
[G:iS ECTION'ONESiSFPSER. ACS]
SPLB.DSSA o B.
SSA SPL
.DS A DD.DSSA D.DSSA SJones ubbar C leCf acken MVir ilio GHolahan 8+
10 Zg' 10 f94 10 ~94 94
+ 94 C3l.~.m -.
9411040285 941028 PDR ADOCK 05000387 P,R
,, IPDR 4
)
MRC BEE II!EITEl8II'SPY
DRAFT (for comment)- October 27, 1994 Table 5.E NEAR BOILING FREQUENCY BY INITIATING EVENT (As-Found Condition)
Initiator Case 1
Loss of SFPC 3.4E-08 2.7E.06 Extended L
1.3E-05 4.0E.09 2.9E-06 Flooding 2.9E-07 Loss of SMS 1.5E-07 Pi Break 2.5E-07 Seieaic c.6 2.6E-07 Seismic >>.6g 3.1E-07 LOCA M/LOOP 2.9E-06 Total 2.3E.05 Case 2
4.8E-08 5.1E.07 3.7E-06 5.1E-10 3.6E-07 6.4E-08 3.3E-08 5.6E-08 7.6E-08 3.8E-08 1.8E-07 5.1E-06 Case 3 Case 4 1.0E-07 7.6E-09 3.1E-06 9.5E-07 8.1E-06 3.2E-06 1.1E-09 3.6E-10 8.1E-06 8.8E-07 3.8E-07 1.2E-07 1.9E-07 5.9E-08 3.3E-07 1.0E-07 2.0E-08 2.9E-08 4.6E-08 1.5E-08 8.3E-07 1.7E-07 2.1E-05 5.5E-06 Case 5
Total 7.5E-08 2.7E-07 1.1E-06 8.3E-06 7.9E.06 3.6E-05 5.2E-10 6.5E-09 3.1E.06 1.5E-05 3.2E 07 1.2E-06 1.6E.07 6.0E-07 2.8E-07 1.0E-06 4.6E-08 4.3E-07 1.5E-08 4.2E.07 1.2E-07 4 ~ 2E-06 1.3E-05 6.8E-05 X of Total 0.4X 12.3X 53.3X 0.0X 22.5X 1.7X 0.9X 1 ~ 5X 0.6X 0.6X 6.2X X of Total 33.9X 7.5X 31.1X 8.0X 19.4X 5-32
DRAFT (for coament)-
October 27, 1994 Table 5.D NEAR BOILING FREQUENCY BY INITIATING EVENT (As-Fixed Condition) initiator Loss of SFPC Case 1
1.1E.07 1.9E-08 5.0E.08 Case 2
Case 3 Case 4 Total X of Total 4.6E-08 2.3E-07 1.1X Lo 5.5E-07 7.9E-08 8.5E-07 4.6E-07 1.9E-06 9.3X Extended L
3.0E-06 4.0E-09 1.5E-06 4.0E-07 3.5E-06 5.0E-10 1.1E-09 1.7E.07 1.6E-06 2.1E-06 0.9E-06 43.2X 1.1E-06 4.3E-06 20.7X 7.1E-10 6.2E-09 O.OX Flooding 2.8E-07 3.8E.08 3.8E.07 2.3E-07 9.3E-07 4.5X Loss of SMS Pi Break Seismic c
~
3.5E-OB 2.5E-07 1.2E-07 5.0E-09 5 4E-08 1.6E-08 6.9E.08 3.3E-OB 3.3E-07 4.4E-08 2.5E-07 1.2X 2.9E-08 1.2E-07 0.6X 2.0E.07 8.1E-07 3.9X Seismic >>
~
3.1E.07 3.8E-08 4.6E-08 3.1E.08 4.2E-07 2.0X LOCA w/LOOP Total 1.6E-06 7.7E-06 9.6E-08 9.0E-07 6.9E-07 7.6E-06 4.6E-07 2.8E-06 13.6X 4.7E.06 2.1E-05 X of Total 37.0X 4.3X 36.2X 22.4X 5-31