Rad Monitoring

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heidin
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156516
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Rad Monitoring
Updated:
2012-05-30 17:37:45
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Rad Monitoring ILC
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  1. Unit Two is operating with Circulating Water Intake Pumps (CWIPs) 2A, 2B, and 2C running and CWIP 20 in standby. Salt Water Release Tank #1 is being discharged per 0OP-6.4.

    CWIP 2A trips. What action should be taken?

    A. Terminate the Salt Water Release Tank discharge immediately.
    B. Start CWIP 20. If the pump start is successful, continue the Salt Water Release Tank discharge.
    C. Contact E&RC and continue the Salt Water Release Tank discharge unless otherwise directed by E&RC.
    D. Monitor the Radwaste effluent radiation monitor, if the monitor shows an increase after the pump trip. Then secure the Salt Water Release Tank discharge.
    A. Terminate the Salt Water Release Tank discharge immediately.


    OP-06.4 directs immediately terminating any release should any abnormal event occur during the release. This would include a CWIP trip since Circ Water provides dilution flow for the release. Direction to terminate the release is also contained in the APP for a CWIP trip.
  2. During accident conditions, the source term from the Unit 1 Reactor Building must be estimated. Available data:

    1-CAC-AQH-1264-3 Reading 4.0 E+3
    1-CAC-AQH-1264-3 Efficiency Factor 1.275 E-5
    1-VA-FR-3356 Failed Low (Rx Bldg HVAC flow)
    Rx Bldg HVAC 3 supply fans and 3 exhaust fans running

    Using PEP-03.6.1, release Estimates Based Upon Stack/Vent Readings, determine the estimated release rate:


    A. 2.2 E+3 uCi/sec
    B. 6.6 E+3 uCi/sec
    C. 1.3 E+4 uCi/sec
    D. 4.9 E+4 uCi/sec
    B. 6.6 E+3 uCi/sec
  3. Unit 1 is operating with the AOG system bypassed.

    During performance of the Main Condenser Air Ejector Radiation Monitor Functional Test, the operator places both the A and the B SJAE Rad Monitor NUMAC drawer (D12-RM-K601A/B) INOP/OPER keylock switches to the INOP position.

    The effect of these actions is the AOG Bypass Valve (AOG-HCV-102):

    A. closes immediately.
    B. closes after a time delay.
    C. remains open irrespedtive of actual radiation conditions.
    D. remains open but will close on an actual hi-hi radiation condition.
    B. closes after a time delay.


    Placing switch to INOP generates an inop trip signal. Any combination of train A and train B rad monitor trip signals (hi-hi, downscale, or inop) initiates the 15 minute timer. Timer timing outcauses closure of AOG bypass valve.
  4. Unit 2 is in a refueling outage. A spent fuel bundle is dropped causing an evacuation of all personnel from the refuel floor due to high radiation. The operator observes the following:

    Area Rad Refuel Floor High Alarm sealed in
    Main Stack Rad has NOT alarmed
    Process Rx Bldg Vent Rad Hi Alarmed but is now clear
    Process Rx Bldg Vent Rad Hi-Hi Alarm sealed in
    Reactor Building HVAC Isolated
    Standby Gas Treatment In Standby
    Purge Exhaust Fans Aligned for primary containment ventilation

    What operator action is required?

    A. Restart Reactor Building HVAC and align for refueling operation.
    B. Start SBGT and isolate the primary containment ventilation lineup.
    C. Maintain the primary containment ventilation lineup and start SBGT.
    D. Maintain SBGT in standby and isolate the primary containment ventilation lineup.
    B. Start SBGT and isolate the primary containment ventilation lineup.


    No auto actions from Area Rad Main Stack has not alarmed (flowpath for Purge Fans), but primary containment ventilation (Group 6 and SCIDs associated with Purge Fans) should auto close on Rx Bldg Vent Rad Hi-Hi, as well as Rx Bldg HVAC isolation & SBGT start. The Hi alarm is from the recorder that can clear if rad level drops following successful isolation. Hi-Hi seals in indicating trip setpoint has been exceeded and automatic actions have failed.
  5. Which one of the following identifies the exact location of the RBCCW liquid process radiation detector (D12-RM-K606) and the function(s) it provides?


    A. RBCCW pump suction header;
    alarm function only

    B. RBCCW pump suction header;
    alarm and isolation function

    C. Upstream of RCC-V28, Drywell Cooling Water Header Isolation Valve;
    alarm function only

    D. Upstream of RCC-V28, Drywell Cooling Water Header Isolation Valve;
    alarm and isolation function
    A. RBCCW pump suction header; alarm function only


    The RBCCW system is continuously monitored by a process radiation monitor. The monitor is located in the RBCCW return header. The monitor provides indication and alarm response. No isolation functions are provided
  6. During performance of 2OI-03.02, Control Operator Daily Surveillance Report, the following SJAE Off-Gas Radiation Monitor readings are recorded:

    D12-RM-K601A 110 mr/hr
    D12-RM-K601B 50 mr/hr

    A local survey instrument positioned at the alternate channel check survey point for SJAE Radiation Monitor B Reads 80 mr/hr.

    Which one of the following characterizes this deviation and also identifies the required action, if any, in accordance with 201-03.02.


    A. The deviation is conservative
    The channel check criteria is met and no other actions are required.

    B. The deviation is conservative
    Initiate a W/R to evaluate the deviation.

    C. The deviation is non-conservative
    Declare SJAE Radiation Monitor A inoperable.

    D. The deviation is non-conservative
    Declare SJAE Radiation Monitor B inoperable.
    D. The deviation is non-conservative Declare SJAE Radiation Monitor B inoperable.


    Using Attachment 1 determine non conservative because half of “A” is greater than that of B, and “B” is less than .75 times the local reading. This also makes it inop.
  7. During normal full power operation, I&C has requested removing annunciator card AOG SYSTEM DISCH RAD HIGH from service for trouble shooting of the annunciator. This annunciator is listed on 0OI-01.08, Control of Equipment and System Status, Attachment 11, Technical Specification/TRM/ODCM Identified Annunciators.

    The trouble shooting activity will take place early in the shift and last 2 hours.

    Which one of the following identifies whether ODCM Radioactive Gaseous Effluent Monitoring Instrumentation 7.3.2 action statement entry is required and also identifies whether 0OI-01.08, Attachment 10, Annunciator Removal From Service Form, is required to be completed for this activity?


    A. action statement entry is required;
    Attachment 10 must be completed.

    B. action statement entry is required;
    Attachment 10 is not required.

    C. action statement entry is not required;
    Attachment 10 must be completed.

    D. action statement entry is not required;
    Attachment 10 is not required.
    • A. action statement entry is required;
    • Attachment 10 must be completed.


    Per OI-01.08, ODCM annunciators may be removed from service for up to 30 minutes without entering the associated spec. Also, if an annunciator is to be disabled for a period of time, not to exceed shift turnover, then the Removal from Service form can be waived.
  8. A fuel bundle was dropped in the spent fuel pool and 0AOP-5.0, Radioactive Spills, High Radiation, and Airborne Activity, has been entered.

    The following alarms are received:

    AREA RAD REFUEL FLOOR HIGH (UA-03 3-7)
    PROCESS RX BLDG VENT RAD HI (UA-03 4-5)
    RX BLDG ROOF VENT RAD HIGH (UA-03 2-3)

    Which one of the following predicts the plant response and also identifies the required procedure implementation?

    A. Secondary Containment has automatically isolated;
    Execute 0AOP-5.0 and RRCP concurrently.

    B. Secondary Containment has automatically isolated;
    Execute RRCP and Exit 0AOP-5.0.

    C. Secondary Containment has NOT automatically isolated;
    Execute 0AOP-5.0 and RRCP concurrently.

    D. Secondary Containment has NOT automatically isolated;
    Execute RRCP and Exit 0AOP-5.0.
    C. Secondary Containment has NOT automatically isolated; Execute 0AOP-5.0 and RRCP concurrently.


    All three of these alarms are symptoms for the AOP, and the last one is an entry condition for the EOP. Unlike 0AOP-14, when an entry condition exists for the EOP you do not exit the AOP, instead it is completed concurrently with the EOP. If turbine building hi rad conditions exist or if an alert or higher on rad conditions exist, then Once thru is placed in recirc (recent mod). conditions do not exist for SCI (SBGT start, Group VI, and RBV isolation). CREV should be manually started, no auto start signal exists. An action from the EOP is to do a 3.4.7 calculation.
  9. Which one of the following identifies whether ODCM Radioactive Gaseous Effluent Monitoring Instrumentation 7.3.2 action statement entry is required and also identifies whether 0OI-01.08, Attachment 10, Annunciator Removal From Service Form, is required to be completed for this activity?

    A. action statement entry is required;
    Attachment 10 must be completed.

    B. action statement entry is required;
    Attachment 10 is not required.

    C. action statement entry is not required;
    Attachment 10 must be completed.

    D. action statement entry is not required;
    Attachment 10 is not required.
    A. action statement entry is required; Attachment 10 must be completed.

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