ML091520294

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NRC Region III, Initial License Exam, Job Performance Measure, JPM: SRO Admin 3 Title: Determination of Whether Radiological Dose Limits Will Be Exceeded
ML091520294
Person / Time
Site: Palisades Entergy icon.png
Issue date: 07/07/2008
From:
NRC/RGN-III
To:
Entergy Nuclear Palisades
Shared Package
ML082200311 List:
References
Download: ML091520294 (12)
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Text

NRC REGION III INITIAL LICENSE EXAM JOB PERFORMANCE MEASURE JPM:

SRO ADMIN 3 TITLE:

DETERMINATION OF WHETHER RADIOLOGICAL DOSE LIMITS WILL BE EXCEEDED CANDIDATE:

EXAMINER:

JPM: SRO ADMIN 3 PALISADES NUCLEAR PLANT Page 2 of 12 JULY 2008 JOB PERFORMANCE MEASURE DATA PAGE Task:

Determination of whether Radiological Dose Limits Will Be Exceeded Alternate Path: NO Facility JPM #: N/A NRC 2005, RO K/A: G.2.3.4 Importance:

RO: N/A SRO: 3.7 K/A Statement: Knowledge of radiation exposure limits under normal or emergency conditions.

Task Standard:

Preferred Evaluation Location: ANY

__X__

Preferred Evaluation Method:

Perform

__X__

Simulate

References:

10 CFR 20 EN-RP201, Dosimetry Administration EN-RP205 Prenatal Monitoring HP 11.1, ALARA Job Performance Reviews HP 2.6, Containment Entry With The Reactor Critical Radiological Survey Sheet, Containment 607 (path taken to P-50D and Regen Hx)

Validation Time: 15 minutes Time Critical:

NO Candidate: ______________________________________________________

Time Start: ________

Time Finish:

Performance Time:

________ minutes Performance Rating:

SAT______

UNSAT ______

Comments:

Examiner: _______________________________

Date:

Signature

JPM: SRO ADMIN 3 PALISADES NUCLEAR PLANT Page 3 of 12 JULY 2008 EXAMINER COPY ONLY Tools/Equipment/Procedures Needed:

Marked up Radiological Survey Sheet, Containment 607 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:

Two jobs are scheduled inside of containment. One is to inspect the PCP P-50D seal area, and the second is to inspect the Regenerative heat Exchangers for shielding installation. The conditions under which these tasks are to be performed are as follows:

P-50D Seal Inspection:

  • A power reduction from 100% to 5% has been performed.
  • The Shift Manager has directed you to determine if Worker 1 or Worker 2 can perform a containment entry to inspect the P-50D Primary Coolant Pump seal area for leakage.
  • The transit route dose rate is < 6mR/hr except as noted on the provided survey maps.
  • Rad Protection has determined the lowest dose route is that which is marked on the survey maps.
  • Rad Protection estimates that it will take 30 seconds each way to pass through the field of the Regenerative Heat Exchangers.
  • Ops estimates that it will take 5 minutes at the PCP seal area for the inspection.
  • Operations estimates that it will take 20 minutes inside Containment including the transit time and the inspection time.
  • Worker #1 and Worker #2 have accumulated 1537.2mR and 1516.4mR respectively so far this year.
  • A pre-job brief has already been performed.

Regen Heat Exchanger Inspection:

JPM: SRO ADMIN 3 PALISADES NUCLEAR PLANT Page 4 of 12 JULY 2008

  • A power reduction from 100% to 5% has been performed.
  • The Shift Manager has directed you to determine if Worker 3 or Worker 4 can perform a containment entry to inspect the Regen Heat Exchangers for shielding installation.
  • The transit route dose rate is < 6mR/hr except as noted on the provided survey maps.
  • Rad Protection has determined the lowest dose route is that which is marked on the survey maps.
  • The inspection will consist of photographing the area around the Regen Heat Exchangers.
  • This evolution should take 20 seconds in the high radiation field around the Regen Heat Exchangers to complete.
  • Worker #3 is a declared pregnant female who has received a total of 378mR during the year, all of which was received during her pregnancy.
  • Worker #4 has accumulated 1922mR so far this year.
  • The workers estimate that they will need to be inside containment for less than 3 minutes.
  • A pre-job brief has already been performed.

INITIATING CUES:

Your task is to determine if any of these workers will exceed any established dose limits during the performance of these jobs. Report the total accumulated dose for each worker to the Shift Manager and inform him if any limits will be exceeded.

JPM: SRO ADMIN 3 PALISADES NUCLEAR PLANT Page 5 of 12 JULY 2008 Proc. Step TASK ELEMENT 1 STANDARD Grade n/a Calculate dose received passing through the Regen Hx radiation field.

Calculate dose received to be 100mR for each time the Regen Hx is passed for a total of 200mR per worker (once going to the PCP and once coming back from PCP after inspection).

S U Comment:

(12000mR/hr) (1hr/3600sec) (30 sec/trip) (2 trips) = 200mR Proc. Step TASK ELEMENT 2 STANDARD Grade n/a Calculate dose received near P-50D PCP.

Calculate dose received to be 270mR per worker at PCP for the inspection.

S U Comment:

(3240mR/hr) (5min) (1hr/60min) = 270mR Proc. Step TASK ELEMENT 3 STANDARD Grade n/a Calculate dose received for transit inside containment.

Calculate dose received to be < 6mR per worker for transit time within containment.

S U Comment:

(<6mR/hr) (14min) (1hr/60min) = 1.4mR

JPM: SRO ADMIN 3 PALISADES NUCLEAR PLANT Page 6 of 12 JULY 2008 Proc. Step TASK ELEMENT 4 STANDARD Grade n/a Calculate total dose received by each worker during inspection.

Calculate total dose received by each worker during inspection of approx. 471.4mR.

S U Comment:

200mR + 270mR + 1.4mR = 471.4mR Proc. Step TASK ELEMENT 5 STANDARD Grade n/a Calculate total dose each worker has accumulated.

Calculates accumulated dose received after inspection to be 2008.6mR for Worker #1and 1987.8mR for Worker #2.

S U Comment:

Worker 1 471.4mR + 1537.2mR = 2008.6mR Worker 2 471.4mR + 1516.4mR = 1987.8mR Proc. Step TASK ELEMENT 6 STANDARD Grade n/a Determine and inform the Shift Manager that the annual admin dose limit will be exceeded by Worker 1, but not by Worker

2.

Inform the Shift Manager Worker #1 will exceed annual dose limit if allowed to perform inspection (2008.6mR > 2000mR annual admin limit).

S U Comment:

CRITICAL STEP

JPM: SRO ADMIN 3 PALISADES NUCLEAR PLANT Page 7 of 12 JULY 2008 Proc. Step TASK ELEMENT 7 STANDARD Grade n/a Calculate total dose received by each worker during photographing at the Regen Hx.

Calculate total dose received by each worker during photographing Regen Hx of approx.

66.7mR.

S U Comment:

(12000mR/hr) (1hr/3600sec) (20 sec/trip) = approx. 66.7mR Proc. Step TASK ELEMENT 8 STANDARD Grade n/a Calculate dose received for transit inside containment.

Calculate dose received to be < 0.3mR per worker for transit time within containment.

S U Comment:

(<6mR/hr) (3min) (1hr/60min) = 0.3mR (may be neglected)

Proc. Step TASK ELEMENT 9 STANDARD Grade n/a Calculate total dose each worker has accumulated.

Calculates accumulated dose received after inspection to be 445.7mR for Worker #3 and 1989.7mR for Worker #4.

S U Comment:

Worker #3:

378mR + 67.7mR = 445.7mR Worker #4:

1922mR + 67.7mR = 1989.7mR

JPM: SRO ADMIN 3 PALISADES NUCLEAR PLANT Page 8 of 12 JULY 2008 Proc. Step TASK ELEMENT 10 STANDARD Grade n/a Determine and inform the Shift Manager that monthly dose limit to the declared pregnant worker will be exceeded.

Inform Shift Manager that Worker #3 cant perform this work, the monthly limit of 50mR to a declared pregnant worker will be exceeded.

Worker #4 will receive 67.3mR if permitted to perform this job. Worker #4 can perform the job.

S U Comment:

CRITICAL STEP END OF TASK

JPM: SRO ADMIN 3 PALISADES NUCLEAR PLANT Page 9 of 12 JULY 2008 CANDIDATE CUE SHEET (TO BE RETURNED TO EXAMINER TO UPON COMPLETION OF TASK)

INITIAL CONDITIONS:

Two jobs are scheduled inside of containment. One is to inspect the PCP P-50D seal area, and the second is to inspect the Regenerative heat Exchangers for shielding installation. The conditions under which these tasks are to be performed are as follows:

P-50D Seal Inspection:

  • A power reduction from 100% to 5% has been performed.
  • The Shift Manager has directed you to determine if Worker 1 or Worker 2 can perform a containment entry to inspect the P-50D Primary Coolant Pump seal area for leakage.
  • The transit route dose rate is < 6mR/hr except as noted on the provided survey maps.
  • Rad Protection has determined the lowest dose route is that which is marked on the survey maps.
  • Rad Protection estimates that it will take 30 seconds each way to pass through the field of the Regenerative Heat Exchangers.
  • Ops estimates that it will take 5 minutes at the PCP seal area for the inspection.
  • Operations estimates that it will take 20 minutes inside Containment including the transit time and the inspection time.
  • Worker #1 and Worker #2 have accumulated 1537.2mR and 1516.4mR respectively so far this year.
  • A pre-job brief has already been performed.

Regen Heat Exchanger Inspection:

  • A power reduction from 100% to 5% has been performed.
  • The Shift Manager has directed you to determine if Worker 3 or Worker 4 can perform a containment entry to inspect the Regen Heat Exchangers for shielding installation.
  • The transit route dose rate is < 6mR/hr except as noted on the provided survey maps.
  • Rad Protection has determined the lowest dose route is that which is marked on the survey maps.
  • The inspection will consist of photographing the area around the Regen Heat Exchangers.
  • This evolution should take 20 seconds in the high radiation field around the Regen Heat Exchangers to complete.
  • Worker #3 is a declared pregnant female who has received a total of 378mR during the year, all of which was received during her pregnancy.
  • Worker #4 has accumulated 1922mR so far this year.

JPM: SRO ADMIN 3 PALISADES NUCLEAR PLANT Page 10 of 12 JULY 2008

  • The workers estimate that they will need to be inside containment for less than 3 minutes.
  • A pre-job brief has already been performed.

INITIATING CUES:

Your task is to determine if any of these workers will exceed any established dose limits during the performance of these jobs. Report the total accumulated dose for each worker to the Shift Manager and inform him if any limits will be exceeded.

JPM: SRO ADMIN 3 PALISADES NUCLEAR PLANT Page 11 of 12 JULY 2008 SIMULATOR OPERATOR INSTRUCTIONS NONE

PALISADES NUCLEAR PLANT Page 12 of 12 JULY 2008 N-50 E-50B Steam Gen E-50A Steam Gen P-50D PCP P-50C PCP P-50B PCP P-50A PCP STEAM ROOM T-64 "A" T-64 "B" T-64 "C" T-64 "D" Letdown HX H

X H

X PSDT Airlock shielding shielding shielding

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