Sro Ssps Wk4

Front 1

The SSPS Logic Test Panel checks the logic functions. The INPUT ERROR INHIBIT switch _____________ all input relay contacts when placed in INHIBIT. Doing so prevents input relays for that train from sending trip signals to the respective train logic circuits, during testing. This action is taken at the commencement of testing and effectively disables that particular train of protection for the duration of the tests. Placing the INPUT ERROR INHIBIT switch in INHIBIT also provides a _____________ alarm. A. OPENS / General WarningB. UNLOCKS / High VoltageC. LOCKS / Low VoltageD. CLOSES / General Warning

Back 1

A

Front 2

What conditions cause a General Warning Alarm on both SSPS Trains? A. Both bypass breakers racked in and closed.B. Both bypass breakers racked in with either one closed.C. Both bypass breakers are closed in test position.D. Both bypass breakers are racked in.

Back 2

A

Front 3

A General Warning Alarm occurs on both SSPS Trains due to reactor trip bypass breakers.What is causing these alarms? A. Both bypass breakers racked in and closed.B. Both bypass breakers are closed in test position.C. Both bypass breakers are racked in.D. Both bypass breakers racked in with either one closed.

Back 3

A

Front 4

A failure in Solid State Protection System Train "A" caused a reactor trip. After repairs the unit prepares for startup. Reactor Engineering has provided and Estimated Critical Rod Position (ECP) calculation for 0200 hrs., which is 26 hours after the trip. Instrument and Control (I & C) technicians are performing STS IC-211A, ACTUATION LOGIC TEST TRAIN A SSPS, to verify operability of Train "A" SSPS and will be complete at 0430 hrs.What should be the Shift Manager's decision regarding reactor startup? A. Complete the surveillance test and startup using the ECP if the reactor can be critical by 0600.B. Suspend I & C surveillance testing until after the reactor startup.C. Delay startup until after the STS is complete and request a new ECP using the later startup time.D. Perform the reactor startup concurrently with the surveillance test.

Back 4

C

Front 5

What bypass breaker condition would cause a General Warning alarm on both SSPS Trains? A. Both racked in and closed.B. Either racked in.C. Either racked in with either one closed.D. Both closed in test.

Back 5

A

Front 6

During a plant startup, "B" Steam Generator level goes less than 23.5% on 4 of 4 channels resulting in a reactor trip signal.What is the response of the SSPS in this situation? A. The undervoltage coils trip the reactor trip breakers. The shunt coils trip the bypass breakers.B. The shunt trip coils trip the reactor trip breakers. The undervoltage coils trip the bypass breakers.C. The shunt and undervoltage coils trip the reactor trip breakers. The undervoltage coils trip the bypass breakers.D. The shunt and undervoltage coils trip both the reactor trip breakers and the bypass breakers.

Back 6

C

Front 7

Placing the Mode Selector Switches on both trains of the Solid State Protection System to the TEST position at the same time: A. causes a Reactor tripB. causes a Safety InjectionC. is prevented by a mechanical interlock on the switchesD. A and B above

Back 7

A

Front 8

With bypass breaker A (BYA) in the closed position, and both normal reactor trip breakers (RTA and RTB) in the closed position, which one of the following will generate a reactor trip? A. None of the above, a reactor trip requires at least two breakers open to generate a reactor tripB. RTB opens up (by itself)C. RTA opens up (by itself)D. BYA opens up (by itself)

Back 8

B

Front 9

There are two identical 15VDC and 48VDC power supply drawers in each Solid State Protection System Logic Bay. How are these power supplies used? A. 15 VDC for trip actuation, auctioneered lowB. 15VDC for electronics, auctioneered lowC. 48VDC for trip/actuation, auctioneered highD. 48VDC for electronics, auctioneered high

Back 9

C

Front 10

The plant was operating at 100% power with all systems operable. An event occurred resulting in a Safety Injection Signal being generated. Two minutes after the initiating event, it is noted that not all of the valves associated with Containment Phase A are in their required position.The most likely reason for the failure of these valves to position correctly is: A. The Shutdown Sequencer is being blocked by the LOCA Sequencer.B. A loss of power to the associated bistables.C. The failure of slave relays in the Solid State Protection System.D. An improper logic scheme in the Solid State Protection System.

Back 10

C

Front 11

In most cases, SSPS input relays receive their power as a result of the condition of their respective process bistable outputs (energized or de-energized). With exceptions, the input relays will be electrically energized when process parameters are within normal limits (less/greater than bistable setpoint). The Containment Spray Actuation Signal is an exception since its relays energize when an unsafe condition occurs. The purpose of this exception is to: A. Eliminate the possibility that a loss of instrumentation power could cause the Containment Spray to actuate.B. The Mode Selector switch must be in the TEST position, in order for the spray test pushbuttons to perform their electronic function.C. Slave relays operate when 15 VDC power is applied.D. A trip signal from the bistable will interrupt input relay power.

Back 11

A

Front 12

A General Warning Alarm occurs on both SSPS Trains due to reactor trip bypass breakers.What is causing these alarms? A. Both bypass breakers racked in and closed.B. Both bypass breakers are racked in.C. Both bypass breakers racked in with either one closed.D. Both bypass breakers are closed in test position.

Back 12

A

Front 13

The Master Relays are checked during Solid State Protection System testing, but can only prove that electrical continuity exists through the slave relay coils. What voltage is supplied to the master relay and slave relay(s) during this test? A. 48VDC Master, 15VDC SlaveB. 120VAC Master, 15VDC SlaveC. 48VDC Master, 120VAC SlaveD. 15VDC Master, 48VDC Slave

Back 13

A

Front 14

The SSPS Logic Test Panel checks the logic functions. The INPUT ERROR INHIBIT switch _____________ all input relay contacts when placed in INHIBIT. Doing so prevents input relays for that train from sending trip signals to the respective train logic circuits, during testing. This action is taken at the commencement of testing and effectively disables that particular train of protection for the duration of the tests. Placing the INPUT ERROR INHIBIT switch in INHIBIT also provides a _____________ alarm. A. LOCKS / Low VoltageB. UNLOCKS / High VoltageC. OPENS / General WarningD. CLOSES / General Warning

Back 14

C

Front 15

In many of the SSPS Test Cabinet checks, the slave relay loads are allowed to actuate as part of the test. This is commonly called ______________. In other cases, the slave relay energizes, but its loads are electrically prevented from actuating. This is called _____________. A. a LOGIC Bay test / an Input Bay testB. GO testing / BLOCK or NO-GO testingC. BLOCK or NO-GO testing / GO testingD. Input Bay testing / Logic testing

Back 15

B

Front 16

Placing the Mode Selector Switches on both trains of the Solid State Protection System to the TEST position at the same time: A. causes a Reactor tripB. causes a Safety InjectionC. is prevented by a mechanical interlock on the switchesD. A and B above

Back 16

A

Front 17

During a plant startup, "B" Steam Generator level goes less than 23.5% on 4 of 4 channels resulting in a reactor trip signal.What is the response of the SSPS in this situation? A. The undervoltage coils trip the reactor trip breakers. The shunt coils trip the bypass breakers.B. The shunt and undervoltage coils trip the reactor trip breakers. The undervoltage coils trip the bypass breakers.C. The shunt and undervoltage coils trip both the reactor trip breakers and the bypass breakers.D. The shunt trip coils trip the reactor trip breakers. The undervoltage coils trip the bypass breakers.

Back 17

B