Purge and Vent Flashcards
V-68A/B, Auxiliary Building Addition Radwaste Area exhaust fans, are designed to:
A. provide 100% of total required flow during normal operation with supply fan V-67
AND one exhaust fan V-68A OR V-68B operating.
B. maintain a negative pressure in each room of the Auxiliary Building Addition Radwaste Area with supply fan V-67 operating and BOTH exhaust fans V-68A AND V-68B operating.
C. automatically start when supply fan V-67 starts to maintain a negative pressure in each room of the Auxiliary Building Addition Radwaste Area.
D. automatically start from a high radiation signal on the Auxiliary Bldg. Addition Radwaste Area Rad Monitor RIA-5711, in order to remove radioactivity from the
building.
B. maintain a negative pressure in each room of the Auxiliary Building Addition Radwaste Area with supply fan V-67 operating and BOTH exhaust fans V-68A AND V-68B operating.
Radwaste Area HVAC System supply fan, V-10, is designed to automatically:
A. start ONE of the exhaustfans V-14A OR V-14B when V-10 starts.
B. start BOTH exhaust fans V-14A AND V-14B when V-10 starts.
C. trip the STANDBY exhaust fan V-14A OR V-14B when V-10 trips.
D. trip BOTH exhaust fans V-14A AND V-14B when V-10 trips.
C. trip the STANDBY exhaust fan V-14A OR V-14B when V-10 trips.
Radwaste Area Ventilation Fans are configured as follows:
• V-10, Radwaste Area Supply Fan is in service and running.
• Radwaste Area Exhaust Fan V-14A is running.
• Radwaste Area Exhaust Fan V-14B is selected for Standby and is also running.
• RIA-1809, Radwaste Area Vent Monitor, has spiked high.
What is the effect of the High Radiation spike on the Radwaste Area Ventilation System?
Supply Fan V-10; Exhaust Fan V-14A; Exhaust Fan V-14B
A. running trips trips
B. running running trips.
C. trips running trips
D. trips trips trips
C. trips running trips
C. CORRECT .. RIA-1809 trips V-10 on a high rad alarm. The Radwaste Exhaust Fan V-14B selected for standby trips when Supply Fan V-10 trips
(unless the V-14 fan selected in “Standby” is the only exhaust fan operating). Exhaust Fan
V-14A will continue to run
VF-66, Fuel Handling Area HVAC System Charcoal Filter, is designed to:
A. operate with ONE exhaust fan V-8A OR V-8B running to achieve full design flow.
B. operate with BOTH exhaust fans V-8A AND V-8B running to achieve full design
flow.
C. remove fine particulates following a fuel cask drop or fuel handling accident in the
Fuel Handling Building.
D. remove fine particulates during normal fuel handling operations in the Fuel Handling
Building.
A. operate with ONE exhaust fan V-8A OR V-8B running to achieve full design flow.
On a Containment High Pressure (CHP) signal, which ONE of the following automatic
actions occur within the Purge and Ventilation Systems?
A. Main Exhaust Fans, V-6A/V-6B, trip.
B. East and West Safeguards Room Dampers PO-181 0, PO-1811 and PO-1812 all
CLOSE.
C. The containment exhaust header isolation valves CV-1805, 1806, 1807 and 1808
OPEN.
D. The containment purge supply dampers CV-1813 and CV-1814 CLOSE.
D. The containment purge supply dampers CV-1813 and CV-1814 CLOSE.
Given the following conditions:
• The plant is in MODE 5.
• The Equipment Hatch is open.
• V-6A, Main Exhaust Fan, is in service.
• CV-1813 and CV-1814, Purge Supply Valves, are open.
• CV-1805, CV-1806, CV-1807 and CV-1808, Purge Exhaust Valves, are open.
• V-46, Air Room Supply Fan, is on.
A Containment High Radiation signal is received on both trains. What is the status of the following fans immediately following the CHR signal?
V-6A; V-46 A. off off B. off on C. on off D. on on
C. on off
Which ONE of the following describes the operation of the Engineered Safeguards
Rooms (ESS) room cooling fans V-27 A/B/C/D?
A. Any ESS exhaust fan in “AUTO” OR “STANDBY” will start when room temperature
reaches 85°F.
B. ESS exhaust fans in “AUTO” will start when room temperature reaches 85°F AND
ESS exhaust fans in “STANDBY” will start when room temperature reaches 90°F.
C. Any ESS exhaust fans in “AUTO” will start when room temperature reaches 90°F.
D. Any ESS exhaust fan will start in any position EXCEPT “PULL-TO-LOCK” when
room temperature reaches 85°F.
B. ESS exhaust fans in “AUTO” will start when room temperature reaches 85°F AND
ESS exhaust fans in “STANDBY” will start when room temperature reaches 90°F.
What control room indication(s) would you check on an alarming annunciator EK-1154,
‘‘RAD WASTE AREA VENT FAN V-10, V14A/B TRIPPED” to determine which fan or
fans tripped?
A. Check fan ammeters for zero amps against control switch positions.
B. Check fan control switch position in “OFF” position.
C. Check fan Amber indicator light lit against control switch positions.
D. Check Red/Green fan running indicator lights against control switch flag indications.
D. Check Red/Green fan running indicator lights against control switch flag indications.
The plant is in Mode 6 for refueling operation with the equipment hatch open. If
annunciator EK-1122 “MAIN EXHAUST PLENUM HI PRESSURE” alarms, which ONE
of the following describes the consequences of continued operation of the Purge and
Ventilation System?
A. This condition could cause the main exhaust fans to draw increased amps and trip
on thermal overload.
B. If not corrected within one hour, any Radwaste gas batch must be terminated to
prevent radioactive contamination from being blown back into the Fuel Pool area.
C. Engineered Safeguards rooms may overheat due to the loss of Radwaste Exhaust
Fans V-14A/B.
D. Reverse Air flow and spread of contamination in the Fuel Handling Building.
D. Reverse Air flow and spread of contamination in the Fuel Handling Building.
The Plant is in Mode 6.
The Fuel Handling Area Ventilation System is lined up for core alterations per Sop 24.
Fuel Handling Area Damper Switch, HS-1894, is in the REFUEL position.
Fuel Handling Fan and Damper Emergency Trip Switch, HS-1893, is in the
EMERGENCY TRIP position.
During core alterations, the Fuel Handling Area Exhaust Fan, V-8A, trips.
What is the consequence of V-8A tripping during core alterations?
A. The Fuel Handling Exhaust Fans selected for Standby will start.
B. Flow through the Fuel Handling Area charcoal filter, VF-66, stops.
C. HS-1893 closes the dampers on all Fuel Area Exhaust and supply fans.
D. HS-1894 locks out the start of all Fuel Handling Area supply fans.
B. Flow through the Fuel Handling Area charcoal filter, VF-66, stops.
A. INCORRECT. SOP-24, 7.15.2 aligns the fuel handling area fans as follows: V-7
supply fan is OFF; only one V-8 exhaust fan is running. The V-8 Fans do not
have a standby start position and HS-1893 in the EMERGENCY TRIP position
prevents the V-70AfB Fuel Handling area exhaust fan from starting on low flow.
Both V-70AfB exhaust fans are OFF. The other Fuel Handling area Supply fan,
V-69, is also OFF. Therefore if V-8A trips no supply or exhaust fans for the fuel
handling area will be operating.
B. CORRECT. See item ‘A’ above. Exhaust Fan V-8 does not have a standby
start feature, thus no flow through the charcoal filters as required for core
alterations.
Given the following conditions:
• The plant has been shut down for 45 days and is in Mode 6.
• Fuel cask movement is in progress over the Spent Fuel Pool.
• The previous day, 3 irradiated fuel assemblies from the reactor core were transferred
to the Spent Fuel Pool.
Which statement describes the actions, if any, that are required per Technical
Specifications’ action statements if BOTH Fuel Handling Building exhaust fans V-8A
AND V-8B are declared INOPERABLE?
A. No immediate actions are required because irradiated fuel is not being moved.
B. No immediate actions are required if all irradiated fuel assemblies in the fuel pool
have greater than 30 days of decay time.
C. IMMEDIATELY suspend movement of the fuel cask in the spent fuel pool.
D. Alternate ventilation must be established within one hour OR movement of the fuel
cask over the Spent Fuel Pool must be suspended.
C. IMMEDIATELY suspend movement of the fuel cask in the spent fuel pool.
During a review of control board indications in Mode 1, the reactor operator notices that
containment purge supply damper, CV-1814, open indicating light is lit. What actions
are required per Technical Specifications?
A. The other purge supply damper CV-1813 must be checked closed.
B. The damper must be closed immediately.
C. The damper must be locked closed within 1 hour.
D. Plant shutdown must commence within 1 hour.
C. The damper must be locked closed within 1 hour.
(SRO ONLY) The Technical Specification requirement to have 2 channels of ESS
Room HVAC System Radiation Monitoring Instrumentation operable is based upon:
A. ensuring that ESS room coolers are placed in service following SI actuation to cool ESS pumps.
B. isolating the ESS Room HVAC System on high radiation to minimize the off-site dose following a Maximum Hypothetical Accident.
C. ensuring that ESS room exhaust fans start following SI actuation to cool ESS room
components.
D. isolating the ESS room service water supply on high radiation to prevent radiation release through the Service Water System following a Maximum Hypothetical Accident.
B. isolating the ESS Room HVAC System on high radiation to minimize the off-site dose following a Maximum Hypothetical Accident.
The plant is in MODE 5 when EK-1364 “GASEOUS WASTE MONITORING
RADIATION HI” alarms due to a high alarm on Fuel Handling Building Addition
Ventilation Radiation Monitor RIA-5712. What is expected to occur to the Fuel
Handling Addition Ventilation System from the high radiation signal only?
A. Fuel Handling Addition Exhaust Fans, V-70A/B, both trip.
B. Fuel Handling Addition Supply Fan, V-69, trips.
C. Fuel Handling Addition Supply Fan, V-69, trips and one Fuel Handling Addition Exhaust Fan, V-70AfB trips.
D. Fuel Handling Addition Supply Fan, V-69, trips and both Fuel Handling Addition Exhaust Fans, V-70AfB, trip.
B. Fuel Handling Addition Supply Fan, V-69, trips.
Which statement describes how the Radwaste Area Ventilation System is restored
following a high radiation alarm on RIA-1809, Radwaste Area Radiation Monitor, during
MODE 5?
A. The Radwaste Area High Rad Isolation Reset Pushbutton is pushed, ONE exhaust fan V-14A or B is started, supply fan V-1 0 is started, and then the remaining exhaust fan is started.
B. The Radwaste Area High Rad Isolation Reset Pushbutton is pushed, BOTH exhaust fans V-14A and B are started, and supply fan V-1 0 is started.
C. ONE exhaust fan V-14A or B is started, supply fan V-1 0 is started, the remaining exhaust fan is started, and the Radwaste Area High Rad Isolation Reset Pushbutton is pushed.
D. BOTH exhaust fans V-14A and B are started, supply fan V-1 0 is started, and the Radwaste Area High Rad Isolation Reset Pushbutton is pushed.
A. The Radwaste Area High Rad Isolation Reset Pushbutton is pushed, ONE exhaust fan V-14A or B is started, supply fan V-1 0 is started, and then the remaining exhaust fan is started.
