Makeup Flashcards
Limits and Precautions Do NOT allow > how many successive starts of a MUP. In an emergency how many successive starts are permitted w/o risk of danger to motor
> 2
2 is allowed in emergency
Do NOT start MUPS prior to completing at least how many minute run of which makeup pumps?
1 min run of MU-P-2 or MU-P-3
To avoid MU-C-1a/b tube damage >200F, letdown flowrates should be limited to what?
Letdown flowrate changes should be limited to 2.5gpm/min (thermal cycling)
Do NOT operate MUP for > how long with total pump flow < how many gpm?
Don’t operate MUP for >30 seconds with total pump flow <40 gpm
Do NOT operate MUPs at MU-T levels < how many inches or taking scution ONLY from MU-T
<3 inches
What valve needs to be CLOSED if MU-T level is < 18” and LPI or BWST is supplying MUP
MU-V-12
<18”
Do NOT allow MU-T to enter RESTRICTED or PROHIBITED region during ES standby, what is the basis for this?
Prevents gas entrainment during LBLOCA
MU-T pressure should be < what pressure to avoid RCS total gas concentration < what cc/kg?
<#60
<100 cc/kg
Letdown cooler inlet valves (MU-V-1A/B) Power supply and closes on high CRD outlet temperature of what? What happens on loss of ICS auto.
1A/B RW MCC 160F Closes on loss of ICS auto
Letdown coolers (MU-C-1A/B) cools letdown from what temperature to what temperature? Why?
550F to 120F Protection of demineralizer resins Protect RCP Seals MU tank has no direct cooling, letdown keep MU tank cool which in turns keeps SI cool
Letdown Cooler outlet valves (MU-V-2A/B) Power supply, close on any of the following?
1B ESV MCC 145F letdown pipe temperature (high energy line break) RM-L-1 high radiation B train ES actuation
Do NOT start First MUP with what valve OPEN or throttled to prevent what?
MU-V-32 OPEN or throttled to prevent RCP seal damage
Letdown Isolation Valve, MU-V-3 Power supply Closes on 4 events
Powered form 1E DC
1.) 135 letdown temperature (loss of ICS auto)
2.) 145 letdown pipe temperature (HELB)
3.) A train ES actuation
4.) Loss of instrument Air
Block Orifice Isolation Valve, MU-V-4 Power supply, fails open on a what and fails closed on what?
Fails open on a loss of ‘A’ DC Fails closed on a loss of instrument air
Block orifice Purpose and basis
Reduces pressure from normal RCS operating pressure of 2155 psig to ~50 psig
Provides up to 45 to 50 gpm flow Lets down one reactor volume in 24 hours
Letdown flow control bypass valve, MU-V-5
Powered from what? Allows additional flow of how much? Fails what on loss of air and loss of hand power?
Powered from ICS Hand power Allows for additional letdown flow up to 140 gpm
Fails closed on loss of IA
If Hand power lost, midposition
RM-L-1 high powered from where?
VBA
Flow through RM-L-1
Flow 0.2-2 gpm (usually .8-1 gpm)
RM-L-1 purpose
Continuously monitors the level of activity in the reactor coolant to provide detection of fuel rod failure
To avoid exceeding LTOP criteria of T.S 3.1.12, Do NOT rack what breaker unless what valve(s) are what position with bkrs in what position AND pzr level < what level OR restored in how long?
Do NOT rack MUP breaker unless MUV-217 and 16’s Closed and bkrs OPEN AND pzr level <100”
OR
Restored within 1 hour
Letdown Prefilters, MU-F-2A/B Purpose, fileters changed out at what differential pressure or at a dose rate of what?
Used to prefilter the letdown flow to prevent fouling of the makeup demineralizers Normally used on startup until RCS chemistry is well established and then bypassed for normal operation
Filters changed out at 25 psid or a dose rate of 350R/hr
Demineralizer finlet isolation valves, MU-V-6A/B Power supply, fails open on two things, fails closed
Powered from 1E DC Both valves fail closed on loss of IA open MU-V-6A fails open and Mu-V-6B fails closed on loss of DC
Demineralizer, MU-K-1A/B Purpose, which one is in service and which in standby normally Demin replaced at what differential pressure?
Removes reactor coolant impurities, used for lithium control
MU-K-1A normally in service, B in standby
Demins replaced at 25 psid Minimum 25 gpm
Letdown split (three way) valve, MU-V-8 Power supply Purpose Interlocked with what other valve?
Powered from 1A RW MCC Directs flow to either makeup tank (THRU) or the reactor coolant bleed tanks/deborating demins (BLEED) Interlocked with MU-V-10
MU-V-8 and MU-V-10 interlock requirements
CRD safety groups are out OR daisy chain cleanup switch in bypass then bleed is permitted
Emergency Boration to Makeup Tank, Mu-V-51 Purpose Fails to what position and when?
USED TO INJECT bamt contents into MU system upstream of MU-T-1 Fals closed on loss of IA, can be manually opened
Filter inlet isolation valves, MU-V-11A/B Power supply Fails to what position when
Powered from 1E DC (solenoid) Loss of A DC, Mu-V-11A fails closed, Mu V-11B fails open Fails closed on a loss of IA
Makeup Filters, MU-F-1A/B Purpose Filters changed out at what differential pressure
Prevent particulate from entering the RCS and subsequently the seals for the RCPs Changed out at 25psid
Minimum allowable flowrate through each demineralizer is what gpm and max is what gpm?
25gpm and max 123 gpm
Feed and Bleed ops is ONLY permitted if how many safety rods fully withdrawn OR safety Rods in what is selected on Diamond Panel
All safety rods fully withdrawn OR
Safety rods BYPASS selected
When RX is critical, how many MUPS will be OPERABLE in ES mode and powered from independent buses?
2
Let down operating parameters Letdown flow
Letdown temperature
Letdown filter deltaP Demineralizer deltaP
45-50gpm
120F
5-25 psid
0-25 psid
Makeup Pump MU-P-1A/B/C (9 stage, 700 HP) Power supply? kirk-key prevents racking B to both busses
MU-P-1A -> 1D 4kv bus MU-P-1B -> 1D or 1E 4kv bus MU-P-1C -> 1E 4kv bus
Makeup pump trip setpoint
<#3 oil pressure
Makeup Pump Auto starts:
Auto start on ES actuation (no standby feature)
Pump must be ES selected to start via 43 selector switch (handle captured in B position). Non-es selected pump will TRIP if both normal feeder bkrs to 4kv bus are open.
Why can’t you run 2 MUP’s on EDG at same time?
If MUP’s were running on EDG during ES, changing 43 ss to other pump would trip the running pump
Above what oil leakage rate requires OP eval for MU-P1A/B/C and motor bearings oil system
Pump is 7 drops/min Bearings is 2.6 drops/min Above this, need an OP EVAL
Seal return RB isolation Valve, MU-V-25 Power supply Closes on what?
1A ESV MCC Closes on A train ES, 30# signal
Seal return RB isolation valves, MU-V-26 Power supply Closes on what, fails what on loss of IA?
Powered from 1F DC (solenoid) Fails open on a loss of DC Closes on B train ES, 30# signal Fails closed on loss of IA can be manually opened
Seal return filter, MU-F-3 Purpose Differential pressure it has to be changed out at
Filtering of the seal leak off flow protects other components, such as the makeup pump seals, should failure of an RCP seal occur Change out filter at 5 psid
Seal return coolers, Mu-C-2A/B To place MU-C-2B in service, boron must be what first? Purpose Cooled by?
Equalized Cools water from seal return and makeup pump recirc Cooled by NSCCW (non essential coolers)
Seal return operating parameters Controlled bleed of flow rate Controlled blood off temperature Seal return filter
~2.4 gpm High1 195F High2 260F 0-5 psid
MU-V-36 and MU-V37 are makeup pump recirc valves Required and min flow
Required 95 gpm per pump
Min 40 gpm per pump
MU-V-217 Flow How many MUPS running? Min flow and thru what valve?
333 gpm 2 MUPS running @ 2155 psig 3 gpm thru MU-V-205
Which makeup valves are ES? (Position on ES actuation)
MU-V- 14A/B (open) MU-V 16A-D (open) Mu-V-18 (close) MU-V-36 and 37 (close)
Aux Oil Pump MU-P-2A/B/C Power supply and trip
A+B -> 1A ESV MCC C -> 1B ESV MCC Trip: >#15 oil pressure
Aux Oil Pump MU-P-2A/B/C Auto starts on what oil pressure? OR MU-P-1A or C taken out of what OR always running for MU-P-1B when what breaker is closed?
<#5 oil pressure or MU-P-1A or C taken out of PTL OR always running for MU-P-1B when MCC breaker closed
Makeup tank, MU-T-1 Purpose Gallons/inch (pressurizer is what?) from reactor coolant bleed tanks
Surge volume for system, overpreussre w/ H2, sprayed in to absorb O2, N2 used prior to shutdown for degasification ~30 gallons/inch (pressurizer is ~12gal/inch)
Makeup Tank steady state operating region Level and pressure?
78-92” MU tank level and 22(26 admin)-34 Psig
Makeup Tank, MU-T-1 Makeup sources?
Letdown, seal return, chem add (not reclaimed water)
Make up tank, MU-T-1 Interlocks
Puts MU-V-8 to “thru” position on low level 18”
Makeup tank, MU-T-1 MUST keep pressure < what pressure to prevent gas intrusion? If required vent MU-T-1to adjust gas concentration, one WDG-P-1A or B (waste gas compressor) must be running in what?
<#60 to prevent gas intrusion. One waste gas compressor must be running in Hand
Makeup tank pressure vs. level How many hours to get out of restricted region
72 hours to get out
RM-L-1 Power supply (high and low side)
High side -> VBA
Low side -> VBB
RM-L-1 Purpose
Monitors activity in RC downstream of delay coil (eliminates N-16) to provide detection of fuel failure. Flow returns upstream of MU-F1A/B, 0.2-2 gpm.
RM-L-1 Interlock to isolate what valves and in what condition? Loss of what power supply actuates interlock?
Interlocks to isolate MU-V-2’s on HI rad levels. Loss of VBA, actuates interlock
Normally Aux oil pumps are what and mains are what?
Aux oil pumps are OFF, mains are ON
Aux Oil Pump: Pump stops > what pressure If oil pressure < what pressure pump starts, cr alarm MUP trips < what oil pressure
15
#5
#3
Gear Lube oil system Operation Aux oil pump starts when makeup pump is started Oil pressure interlocks: Aux oil pumps stops in how much time if the oil pressure is greater than what pressure within how much time after pump start?
Aux oil pump stops in 3 mins the oil pressure >12# after 20 seconds
Gear lube pump oil system If oil pressure is < what pressure, pump starts, CR alarm
Oil pressure <#7 pump starts, CR alarm
Speed Changer Aux Oil Pump MU-P-4A/B/C Power supplies
Speed Changer Aux Oil Pump MU-P-4A/B/C Power supplies
POWER SUPPLY? Aux oil pump MU-P-2A Main oil pump MU-P-3A Aux gear oil pump MU-P-4a
1A ESV MCC
POWER SUPPLY? Aux oil pump MU-P-2A Main oil pump MU-P-3A Aux gear oil pump MU-P-4a
POWER SUPPLY? Aux oil pump MU-P-2A Main oil pump MU-P-3A Aux gear oil pump MU-P-4a
MU-P-1A/C Normal and backup
Decay closed Backup from NSCCW (used if pump will be run >4hrs)
MU-P-1B
Cooling from NSCCW
Speed changer aux oil pump MU-P-4A/B/C Trips
Stops 2.5 min if >#12 in 20 secs
Speed changer aux oil pump MU-P-4A/B/C Auto Starts:
Starts when MUP starts, Restarts if <7#
Aux oil pump MU-P-2C Main Oil Pump Mu-P-3C Aux Gear Oil Pump MU-P-4C
1B ESV MCC 1B ES MCC 1B ESV MCC
Makeup pump recirculation isolation valves MU-V-36 and MU-V-37
Power supply
Normally what position, what on ES?
Flow rate through recirc line Returns to where via where?
Powered from 1A ESV MCC/1B ESV MCC Normally open, will close on ES Flow rate through recirc line is 95 gpm per pump and returns to the makeup tank via seal return coolers
Makeup pump discharge header cross connect valves MU-V-77A/B and MU-V-76A/B Between MU-P-1A and 1B Normally locked in what position? Manual valves
77A/B normally locked open 76A/B Normally locked closed
Makeup pump discharge header cross connect valves MU-V-77A/B and MU-V-76A/B Between MU-P-1A and 1B Normally locked in what position? Manual valves
Normal path for makeup flow to B RCP discharge (between rcp and rx vessel) 220”
Makeup flow control valve Mu-V-17 Hand/auto station is powered from where?
ICS auto power
Makeup flow control valve Mu-V-17 What happens if you lose ICS auto?
Station goes to Hand
Makeup flow control valve Mu-V-17 If in hand, and ics hand powere is lost what position does MU-V-17 go to?
Goes to mid position
Normal makeup flow control valve bypass, MU-V-217 Power supply Purpose
1A AB H&V MCC Higher rate of makeup flow
Minimum makeup flow valve, MU-V-205 Purpose Set for what to what gpm to provide flow through the line to where even with what valve closed?
Provide continuous, minimum makeup flow Set for 3 to 5 gpm to provide flow through the line to the B HPI/normal makeup nozzle even with MU-V-17 closed
Normal makeup RB isolation Valve, MU-V-18 Power supply Fails what on a loss of what? Fails what on a loss of DC? Does what on ES signal (either train)
Powered from 1M DC Fails closed on a loss of IA Fails open on a loss of DC Closes on ES signal
Makeup interlocks what happens on ES A train actuation?
MU-V-36 closes ES selected MU pump starts (MU-P-1A) MU-V-18 closes
Makeup interlocks what happens on ES B train actuation?
MU-V-36 closes ES selected MU pump starts (MU-P-1A) MU-V-18 closes
Seal Injection control valve, MU-V-32 Hand/auto station powered from where? Fail what on loss of IA?
Powered from ICS auto power Fails OPEN on loss of IA (only one that fails open on loss of IA)
Seal Injection Bypass Valve,
MU-V-90 Purpose
Normal position
Manual bypass around MU-V-32 Normally closed
RCP Seal injection filters, MU-F-4A/B Purpose
Prevent particulates from entering the RCP seals
Seal Injection RB isolation valve, MU-V-20
Purpose
Power supply
Fails what on loss of DC
Fails what on loss of IA
Provides isolation before seal injection line enters the RB Powered from 1M
DC Fails open on a loss of DC Fails closed on loss of IA
Seal injection interlocks
Loss of Both seal injection and intermediate closed cooling water (ICCW) for >10 seconds will trip all reactor coolant pumps
Seal injection <22 gpm Intermediate closed flow <550 gpm 10 sec time delay
To start a RCP total seal injection flow much be greater than how many gpm?
22
Makeup Pump suction from BWST, MU-V14A/B Power supply Valve do what on ES signal
Powered from 1A ES MCC/1B ESV MCC Valves OPEN on a n ES signal to provide suction to the MU pumps from the BWST
Makeup pump discharge to RC loop isolation, MU-V-16A/B/C/D 16a/b power supply
16c/d power supply
1A ESV MCC
1B ESV MCC
MU-V-16a/b/c/d What position on ES and why
Valves OPEN on an ES signal to provide up to 500 gpm HPI flow at 600 psig RCS pressure
Cavitating venturis Purpose Limits HPI pump flow rate and prevents pump run out at lower RC pressures without operator actions
Function to limit flow in the line if a break occurs downstream
High pressure injection interlocks ES A train actuation what happens?
MU-V-14A Opens MU-V-16A and MU-V-16B OPEN HPI low flow alarm enabled
High Pressure Injection interlocks ES B train actuation what happens
Mu-V-14B Opens Mu-V-16C and MU-V-16D OPEN HPI low flow alarm enabled
Makeup pump discharge cross connects and MU-V-18 Power 1M DC (Mu-V-18 power) is powered from the same side of DC as the OPEN discharge cross connects
FLEX high pressure injection Power supply Suction preferred and alternate sources High pressure injection point
1A/1B ES MCC
Suction to bwst (preferred)
SF pool
C RCBT
National safer equipment Normal flex high pressure injection point is upstream of MU-V-16 C/D
Flooding AB and RB are protected against what? Electrical equipment is above how many feet in RB basement? (above post what flood level?) Makeup pump cubicle drains to what sump? What is the alarmed leakage rate?
Protected against external flooding
Electrical equipment is above 6’ in rb basement
Above post loca flood level Makeup pump cubicle drains to ab sump
Alarm leakage rate of 15 gpm
How many train system and why?
Single failure will not prevent the system from accomplishing its ES function
Portions of MU system can be controlled from where?
RSD
SBO diesel backup to what buses? Flex diesel for backup to what buses?
1D/1E 4kv ES bus
1P/1S 480V ES bus
RCS low temp overpressure protection Tech spec
If reactor vessel head is installed and indicated RCS temperature is <313F, HPI pump bkrs shall not be racked in unless: 1.) MU-V-16A/b/c/d are closed with their breakers open, and MU-V-217 is closed 2.) And 3.) Pzr level is maintained <100 inches. If pzr is >100 inches, restore level to <100 inches within 1 hour
Letdown Cooler inlet valves (MU-V-1A/B) Interlock
Can’t OPEN unless IC-V-1A/B (ICCW to letdown cooler) OPEN
Letdown cooler inlet valves (MU-V-1A/B) Auto Signals
Close on >160F CRD temp, OPEN travel Stops on Ic-v-1 closure
Letdown cooler outlet valves (MU-V-2A/B) Power supply
1B ESV 480V MCC
Letdown cooler outlet valves (MU-V-2A/B) Auto Signal
Close on HI RM-L-1, Close on LD line rupture T>145F (looks at temp AROUND the pipe), Close “B” ESAS (RCS<1600#, RCS<500, RB>4#)
Letdown isolation valve (MU-V-3) Power supply Fail position and on what?
1 ES 125/250 VDC Fails open on loss of DC Fails close on loss of IA or ICS Auto/hi temp interlock HELB)
Letdown isolation valve (MU-V-3) Auto signal
Close on LD temp >135F (resin protection), LD line rupture >145F, or “A” ESAS (RCS<1600#, RCS <500#, RB>4#)
What temp element does MU-V-3 & 2A/B are adjacent (trigger together)
HELB temp element
Demineralizers MU-K-1A/B Interlocks
What temp element does MU-V-3 & 2A/B are adjacent (trigger together)
MU-K-1A/B Ensure demin bypass valve is in what position before isolating demineralizers or risk lifting which relief valve
OPEN MU-V-105
Makeup filter inlet isolation (MU-V-11A/B) Power supply Fail position
1E ES 125/250 VDC
A-> CLOSE on loss of DC
B-> OPEN on loss of DC
Both closed on loss of IA and ICS/NNI
Seal return RB isolation valve Mu-V-25 Power supply Auto signals
1A ESV MCC Close on A ES 30# RB
Seal return RB isolation valve Mu-V-26
Power supply
Fail position
Auto signal
1F ES 125/250 VDC Fails open on loss of B DC fails closed on loss of air Close on B ES 30# RB
Two (2) seal return coolers MU-C-2A/B Cooled by what?
Nuke service
LTOP tech spec, fucking know it
If reactor vessel head is installed and indicated RCS temp is <313F, high pressure injection pump bkrs shall not be racked in unless:
1.) MU-V-16a/b/c/d are closed with their breakers open, and MU-V-217 is closed, and
2.) Pzr level is maintained <100 inches. If pzr level is >100 inches, restore level to <100 inches within 1 hour.
Emergency core cooling systems *reactor shall not be made critical unless the following conditions are met
BWST shall contain a minimum of 350,000 gallons of water having a minimum concentration of 2,500 ppm boron at a temp not less than 40F. if concentration or water temp is not within limits, restore within 8 hours. If BWST volume is not within limits, restore in 1 hour.
Emergency core cooling systems *reactor shall not be made critical unless the following conditions are met
2 MU pumps/HPI pumps are operable in the engineered safeguards mode powered from independent essential buses MuT pressure enad level shall be maintained with unrestricted operation region of fig 3.3-1 Restore in 72 hours if outside Operation with MUT conditions within the prohibited region is well… prohibited
Emergency core cooling systems Maintenance or testing limit
2 MU pumps/HPI pumps are operable in the engineered safeguards mode powered from independent essential buses MuT pressure enad level shall be maintained with unrestricted operation region of fig 3.3-1 Restore in 72 hours if outside Operation with MUT conditions within the prohibited region is well… prohibited
Emergency core cooling systems Maintenance or testing how long if system is not restored within 72 hours
If the system is not restored to meet the requirements of spec 3.3.1 within 72 hours, the reactor shall be placed in a HOT SHUTDOWN condition within 6 hours.
what happens on ES actuation in makeup
ES actuation Mu-v-2a/b Take suction from BWST Normal makeup get isolated Muv 18, 36, 37 go closed 16 abcd go open 25 and 26 open
