Setpoints

Question 1

Nominal steam flow

Answer 1

15 x10^6 lbm/hr

Question 2

ECCS initiation setpoints

Answer 2

-HPCS: -50”, 1.68#
-LPCS: -129”, 1.68#
-LPCI: -129”, 1.68#

Question 3

ADS auto-initiation logic

Answer 3

-Low RPV level (-129”)
-Confirm low RPV level (+13”)
-105 second time delay (starts at Level 1)
-LPCS or LPCI available (LPCS >145#, LPCI >125#)

Question 4

Vessel pressure limits

Answer 4

-Normal Operating: 1020#
-LCO limit (3.4.12): 1035#
-Design limit: 1250#
-Safety limit: 1325#

Question 5

Vessel heatup and cooldown rates

Answer 5

-Admin: 80F/hr
-Tech Spec (3.4.11): 100F/hr

Question 6

Safety Limits and actions if violated

Answer 6

-Steam dome press <686# or core flow <10%, THERMAL POWER shall be LE 25% RTP
-Steam dome press GE 686# and core flow GE 10%, MCPR shall be GE 1.07
-RPV level shall be > TAF
-Steam dome press shall be LE 1325#
-If violated: w/in 2 hrs, restore and insert all insertable rods

Question 7

MSIV & MSL Drain isolation signals

Answer 7

-MSL low press: 831#
-Low cond vac: 21.6” Hg
-RPV low level: -129”
-High steam flow: 140%
-High MS Tunnel temp/diff temp

Question 8

EDG Auto Starts

Answer 8

-DG-1: UV SM-7, RPV -129”, DW 1.68#
-DG-2: UV SM-8, RPV -129”, DW 1.68#
-DG-3: UV SM-4, RPV -50”, DW 1.68#
-EDG req to be at rated speed/voltage in 15 sec (typically 7-10), can be fully loaded in 30 sec (loads auto sequenced)

Question 9

FAZ signals (CTMT Vent & Purge isolation signals)

Answer 9

(Fog, Agua, Zoomies)

F- High Drywell Pressure (1.68#)
A- Low RPV Water Level (-50”)
Z- High RB Exh Plenum Rad Level (13 mr/hr)

Question 10

Reactor Scram conditions (RPS)

Answer 10

Pressure:
-DW high press (1.68#)
-RPV high press (1060#)

APRM:
-Upscale STP
-Upscale neutron flux Hi
-Fixed flux
-APRM INOP

Manual:
-Mode Switch to Shutdown
-Manual pushbuttons

Level:
-RPV low level (+13”)
-SDV high level (95%)

IRM:
-Neutron flux Hi (120/125)
-INOP

Valves:
-MSIV closure (<90% open)
-Turbine TV closure (<95% open)
-Turbine GV trip header low press (1252# @ >30%)

SRM:
-SRM Flux Hi (WITH SHORTING LINKS REMOVED)

OPRM:
-Period, Amplitude, Rate