ML20149J721
| ML20149J721 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 07/24/1997 |
| From: | AFFILIATION NOT ASSIGNED |
| To: | |
| Shared Package | |
| ML20149J719 | List: |
| References | |
| PROC-970724, NUDOCS 9707290063 | |
| Download: ML20149J721 (6) | |
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PARSONS POWER Critical Design Characteristics Overcooling Events Millstone 2 I2[/77 Prepared By:
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Ql Revision 1
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9707290063 970725 Tier 2 Revision 1 PDR ADOCK 05000336 24 J+, m P
CRITICAL DESIGN CHARACTERISTICS OVERCOOLING EVENTS MILIETONE 2 LIST OF EFFECTIVE PAGES Pace No.
Revision No.
Pare No.
Revision No.
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- PASSONS P9 WEB -
Tier 2 Revision 1 i
24 My 1997
O 1.3, Figure 2 shows the systems involved in the mitigation of each analyzed overcooling event.
l Figure 2: Tier-2 AMSR - Systems Involved in Overcooling Events l
14.1.3 14.1.3 14.1.5 14.1.5 14.1.5 14.1.5 l
increase in Increase MSLB MSLB MSLB MSLB Steam in Steam Mode I w/ LOOP Mode 2 w/ LOOP SYSTEM Flow Flow Mode 1 Mode 2 Mode l Mode 3 RPS X
X X
X X
X CEDM X
X X
X X
X RCS X
X X
X TURB X
X X
X EHC X
X X
X MS X
X X
X X
X MFW X
X AFW X
X X
X CVCS X
X X
X HPSI X
X X
X ELECT X
X X
X X
X DIST EDG X
X 1.4 Figure 3 shows the Which Critical Safety Functions have corresponding Critical Design Characteristics for each of the analyzed accidents.
4 Figure 3: Tier-2 AMSR - Critical Safety Functions with CDCs in Overcooling Events 14.1.3 14.1.
I 14.1.5 l
Increase in Increw.:
MSLB Steam Flow in Steam Mode 1 Critical Safety Function Mode 1 Flow (4 Cases)
Mode 3 Reactivity X
X X
Fuel Integrity X
X X
RCS Heat Removal X
X X
X l
RCS Pressure & Inventory 4
Containment Integrity &
Radiation Control Electrical Power X
X X
Essential Support Systems Environmental Control
- To be determined from detailed analyses 3
Tier 2 Revision 1 24 hdy 1997
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SYMROI OESCRIPTION SIGNALS IDENTIFIES ACTUATION AND CONTROL SIGNALS IMPORTANT TO SYSTEM OPERATION.
SIGNALS MUST ACTUATE ONE OR MORE COMPONENTS TO BE INCLUDEO.
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COMPONENTS NON SAFETY COMPONENTS MAY BE INCLUDED.
CONTR IDENTIFIES CONTROL ACTIONS SUCH AS INITIATE. CONTROL. ISOLATE. ETC.
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SYSTEM IDENTIFIES SYSTEM OR SUBSYSTEM REQUIRED TO ACHIEVE THE SAFETY FUNCTION.
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PROCESS IDENTIFIES PROCESS OR DESIGN FEATURE REQUIRED TO ACHIEVE THE SAFETY FUN CRIT C AFETY IDENTIFIES THE CRITICAL SAFETY FUNCTION.
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