ML091520479

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NRC Region III, Initial License Exam, Job Performance Measure, JPM: SRO-Admin E, Title: Perform Off-site Dose Calculation Normal Method
ML091520479
Person / Time
Site: Palisades Entergy icon.png
Issue date: 07/07/2008
From:
NRC/RGN-III
To:
Entergy Nuclear Palisades
Shared Package
ML082200319 List:
References
Download: ML091520479 (10)
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Text

NRC REGION III INITIAL LICENSE EXAM JOB PERFORMANCE MEASURE JPM:

SRO-ADMIN e TITLE:

PERFORM OFF-SITE DOSE CALCULATION NORMAL METHOD CANDIDATE:

EXAMINER:

JPM SRO-ADMIN 4 PALISADES NUCLEAR PLANT Page 2 of 10 JULY 2008 JOB PERFORMANCE MEASURE DATA PAGE Task:

Calculate Off-Site Dose Alternate Path: N/A Facility JPM #: NEW K/A: 2.4.44 Importance: SRO: 4.4 K/A Statement: Knowledge of emergency plan protective action recommendations Task Standard: Perform a manual stack gas release rate calculation correctly Preferred Evaluation Location: Simulator

__X__

In Plant Preferred Evaluation Method:

Perform

__X__

Simulate

References:

EI-1, Emergency Classification And Actions EI-6.0, Offsite Dose Calculation And Recommendations For Protective Actions EI-6.1, Release Rate Determination From Stack Gas Monitors Validation Time: 25 minutes Time Critical:

NO Candidate:

Time Start: ________

Time Finish:

Performance Time:

________ minutes Performance Rating:

SAT______

UNSAT ______

Comments:

Examiner: _______________________________

Date:

Signature

JPM SRO-ADMIN 4 PALISADES NUCLEAR PLANT Page 3 of 10 JULY 2008 EXAMINER COPY ONLY Tools/Equipment/Procedures Needed:

EI-6.1, Attachments 1, Stack Gas Monitor Conversion Factor, RIA-2326;, Stack Gas Monitor Conversion Factor, RIA-2327; and, Stack Release Rate Worksheet, Rev. 7 Also see Simulator Operator Instructions (last page of this document).

READ TO CANDIDATE DIRECTION TO CANDIDATE:

I will explain the initial conditions, and state the task to be performed. All control room steps shall be performed for this JPM, including any required communications. I will provide initiating cues and reports on other actions when directed by you. Ensure you indicate to me when you understand your assigned task. To indicate that you have completed your assigned task return the handout sheet I provided you.

INITIAL CONDITIONS:

  • A plant trip occurred 7 hour8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br /> ago
  • A radioactive release is currently in progress via the plant stack.
  • RGEM is operable and RIA-2326, normal range noble gas stack monitor, has been in high alarm
  • No indications of fuel failure exist
  • The IBM PC Automated Dose Assessment Program Offsite is not available
  • The PPC is not available
  • RMC has verified stack activity is consistent with the Radiation Monitor reading
  • There is currently a blizzard outside
  • A Site Area Emergency has been declared
  • The SED will review EI-6.13 to determine any additional requirements, and assign other personnel to complete and process EI-3 notification forms INITIATING CUES:
  • The SED has directed you to determine the Stack Release Rate per Section 6.2.1 of EI-6.0 and turn in Stack Release Rate Worksheet, Attachment 3 of EI-6.1 to SED

JPM SRO-ADMIN 4 PALISADES NUCLEAR PLANT Page 4 of 10 JULY 2008 Proc. Step TASK ELEMENT 1 STANDARD Grade n/a EI-6.0, Offsite Dose Calculation and Recommendations For Protective Actions, Section 6.2, Normal Method Dose Assessment located.

Operator obtains EI-6.0, Section 6.2 S U Comment:

Proc. Step TASK ELEMENT 2 STANDARD Grade 6.2.1d.1.b If the Offsite program is not functional, the manual release rate calculation procedure

.. EI-6.1, Release Rate Determination from Stack Gas Monitors, shall be used Operator obtains EI-6.1, Release Determination From Stack Gas Monitors.

S U Comment:

Proc. Step TASK ELEMENT 3 STANDARD Grade 4.0b Data and results from this procedure should be recorded on Attachment 3, Stack Release Rate Worksheet Operator obtains EI-6.1 Att. 3 S U Comment:

Evaluator provides candidate with a Working Copy (Attachments 1, 2, and 3 of EI-6.1)

JPM SRO-ADMIN 4 PALISADES NUCLEAR PLANT Page 5 of 10 JULY 2008 Proc. Step TASK ELEMENT 4 STANDARD Grade 5.1a Determine the Time Since Reactor Shutdown (in hours) and record on the Stack Gas Release Worksheet 7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br /> entered on #1. Time Since Reactor Shutdown, EI-6.1, Att. 3 S U Comment:

CRITICAL STEP Proc. Step TASK ELEMENT 5 STANDARD Grade 5.1b IF unavailable, THEN obtain reading for RIA-2327 from chart recorder RR-2327 Record reading on Att. 3. Circle appropriate units and mark which monitor was used 9.9 mr/hr entered on Att. 3, #2. Current stack gas monitor reading AND CPM circled AND (X)

RIA-2327 S U Comment:

NOTE: RIA-2327 (RR-2327) must be used. This is based on note in Section 6.2.1 of EI-06 which states if RIA-2326 is in High Alarm, all flow is routed through RIA-2327.

CRITICAL STEP Proc. Step TASK ELEMENT 6 STANDARD Grade 5.1c Obtain the background reading from the same recorder used above. The default value for background are 0.5 mr/hr for RIA-2327,. Record background on Att.

3 Circle the appropriate units.

0.5 mr/hr entered on Att. 3, #3. Stack monitor background reading AND CPM circled S U Comment:

EVALUATOR CUE: Inform operator to use the default value (0.5 mr/hr) as the background reading, after they have read the step.

CRITICAL STEP

JPM SRO-ADMIN 4 PALISADES NUCLEAR PLANT Page 6 of 10 JULY 2008 Proc. Step TASK ELEMENT 7 STANDARD Grade 5.1d Obtain a net stack reading by subtracting stack monitor background from current stack monitor reading Record background on Att. 3 Circle the appropriate units.

9.4 mr/hr entered on #4. Net stack reading AND mr/hr circled S U Comment:

CRITICAL STEP Proc. Step TASK ELEMENT 8 STANDARD Grade 5.2f&g IF the stack gas flow rate indication is not available from the PPC, THEN use 82,000 ft3/min as a default value Record the Stack Gas Flow on Att.3 82,000 ft3/min entered on #5. Stack gas flow rate S U Comment:

Note: PPC not available for stack gas flow rate.

CRITICAL STEP Proc. Step TASK ELEMENT 9 STANDARD Grade 5.2h IF performing the manual release rate determination, THEN convert flow rate to m3/s by multiplying stack gas flow rate by 4.27 E-4(units). Record the result on Att. 3 38.704 m3/s entered on #6. Stack gas flow rate S U Comment:

CRITICAL STEP

JPM SRO-ADMIN 4 PALISADES NUCLEAR PLANT Page 7 of 10 JULY 2008 Proc. Step TASK ELEMENT 10 STANDARD Grade 5.3a.2 IF the Time Since Reactor Shutdown is >6 hours, THEN obtain factor from or 2, as appropriate, using the Time Since Reactor Shutdown as the Decay Time.

Record conversion factor on Att.3, circle the appropriate units 0.04 Ci/m3/mr/hr on #7. Conversion factor AND Ci/m3/mr/hr circled S U Comment:

Note: Attachment 2, STACK GAS MONITOR CONVERSION FACTOR, RIA-2327 Figure 2, is used, all readings on Att. 3, have come from RIA-2327 CRITICAL STEP Proc. Step TASK ELEMENT 11 STANDARD Grade 5.3b Calculate the noble gas release tare (QN) as follows:

QN (Ci/s) = Net stack gas monitor reading (mr/hr) x stack gas flow rate (m3/s) x conversion factor Record the results on Att. 3 14 to 16 Ci/s entered on #8. QN, Noble Gas release rate S U Comment:

CRITICAL STEP

JPM SRO-ADMIN 4 PALISADES NUCLEAR PLANT Page 8 of 10 JULY 2008 Proc. Step TASK ELEMENT 12 STANDARD Grade 5.3c Calculate the Iodine release rate (QI) as follows:

QI = QN x (1.0 E-3)

Record results on Att. 3 0.014 to 0.016 Ci/s entered on #9. QI, Iodine release rate S U Comment:

CRITICAL STEP Proc. Step TASK ELEMENT 13 STANDARD Grade n/a Date, Time, and Sign Att. 3 of EI-6.1 Completed form given to SED EI 6.1, Att. 3, signed, dated with time and turned over to the SED S U Comment:

CRITICAL STEP END OF TASK

JPM SRO-ADMIN 4 PALISADES NUCLEAR PLANT Page 9 of 10 JULY 2008 CANDIDATE CUE SHEET (TO BE RETURNED TO EXAMINER TO UPON COMPLETION OF TASK)

INITIAL CONDITIONS:

  • A plant trip occurred 7 hour8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br /> ago
  • A radioactive release is currently in progress via the plant stack
  • RGEM is operable and RIA-2326, normal range noble gas stack monitor, has been in high alarm
  • No indications of fuel failure exist
  • The IBM PC Automated Dose Assessment Program Offsite is not available
  • The PPC is not available
  • RMC has verified stack activity is consistent with the Radiation Monitor reading
  • There is currently a blizzard outside
  • A Site Area Emergency has been declared
  • The SED will review EI-6.13 to determine any additional requirements, and assign other personnel to complete and process EI-3 notification forms INITIATING CUES:
  • The SED has directed you to determine the Stack Release Rate per Section 6.2.1 of EI-6.0 and turn in Stack Release Rate Worksheet, Attachment 3 of EI-6.1 to SED

Proc No EI-6.1 Revision 7 Page 1 of 1 PALISADES NUCLEAR PLANT Page 10 of 10 JULY 2008 STACK RELEASE RATE WORKSHEET

1.

Time Since Reactor Shutdown

=

_______7_____

hours

2.

Current stack gas monitor reading

=

_____9.9___

cpm or RIA-2326 ( )

(circle units) mrem/hr RIA-2327 ( X

)

3.

Stack monitor background reading

=

_____0.5______

cpm or (circle units) mrem/hr

4.

Net stack reading

=

___9.4_

cpm or (circle units) mrem/hr

5.

Stack gas flow rate

=

___82000______

ft3/min

6.

Stack gas flow rate

(#5) ft3/min x 4.72 E-4 m3/sec

=

___38.704______

m3/s ft3/min

7.

Conversion factor = _0.04____ Ci/m3 or Ci/m3 cpm mrem/hr (circle units)

8.

QN, Noble Gas release rate =

(#4) x (#6) x (#7)

= 14 to 16 Ci/s

9.

QI, Iodine release rate = (#8) x (1.0 E-3)

= 0.014 to 0.016 Ci/s Date: _TODAY____ Time: __NOW__ Completed By: __Joe Operator_________

ANSWER KEY ANSWER KEY ANSWER KEY ANSWER KEY

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