ML091520464
| ML091520464 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 07/07/2008 |
| From: | NRC/RGN-III |
| To: | Entergy Nuclear Palisades |
| Shared Package | |
| ML082200319 | List: |
| References | |
| Download: ML091520464 (11) | |
Text
NRC REGION III INITIAL LICENSE EXAM JOB PERFORMANCE MEASURE JPM: SRO ADMIN d.
TITLE: DETERMINATION OF WHETHER RADIOLOGICAL DOSE LIMITS WILL BE EXCEEDED CANDIDATE: _____________________________________________
EXAMINER: _____________________________________________
JPM: SRO ADMIN 3 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: Simulator __X__ In Plant _____
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 PALISADES NUCLEAR PLANT Page 2 of 11 JULY 2008
JPM: SRO ADMIN 3 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:
PALISADES NUCLEAR PLANT Page 3 of 11 JULY 2008
JPM: SRO ADMIN 3
- 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.
PALISADES NUCLEAR PLANT Page 4 of 11 JULY 2008
JPM: SRO ADMIN 3 Proc. Step TASK ELEMENT 1 STANDARD Grade Calculate dose received to be 100mR for each Calculate dose received passing through time the Regen Hx is passed for a total of n/a the Regen Hx radiation field. 200mR per worker (once going to the PCP and S U once coming back from PCP after inspection).
Comment:
(12000mR/hr) (1hr/3600sec) (30 sec/trip) (2 trips) = 200mR Proc. Step TASK ELEMENT 2 STANDARD Grade Calculate dose received to be 270mR per Calculate dose received near P-50D PCP.
n/a worker at PCP for the inspection. S U Comment:
(3240mR/hr) (5min) (1hr/60min) = 270mR Proc. Step TASK ELEMENT 3 STANDARD Grade Calculate dose received for transit inside Calculate dose received to be < 6mR per n/a containment. worker for transit time within containment. S U Comment:
(<6mR/hr) (14min) (1hr/60min) = 1.4mR PALISADES NUCLEAR PLANT Page 5 of 11 JULY 2008
JPM: SRO ADMIN 3 Proc. Step TASK ELEMENT 4 STANDARD Grade Calculate total dose received by each Calculate total dose received by each worker n/a worker during inspection. during inspection of approx. 471.4mR. S U Comment:
200mR + 270mR + 1.4mR = 471.4mR Proc. Step TASK ELEMENT 5 STANDARD Grade Calculates accumulated dose received after Calculate total dose each worker has inspection to be 2008.6mR for Worker #1and n/a accumulated. S U 1987.8mR for Worker #2.
Comment:
Worker 1 471.4mR + 1537.2mR = 2008.6mR Worker 2 471.4mR + 1516.4mR = 1987.8mR Proc. Step TASK ELEMENT 6 STANDARD Grade Determine and inform the Shift Manager Inform the Shift Manager Worker #1 will exceed that the annual admin dose limit will be annual dose limit if allowed to perform n/a exceeded by Worker 1, but not by Worker inspection (2008.6mR > 2000mR annual admin S U
- 2. limit).
Comment:
CRITICAL STEP PALISADES NUCLEAR PLANT Page 6 of 11 JULY 2008
JPM: SRO ADMIN 3 Proc. Step TASK ELEMENT 7 STANDARD Grade Calculate total dose received by each Calculate total dose received by each worker worker during photographing at the Regen during photographing Regen Hx of approx.
n/a Hx. 66.7mR. S U Comment:
(12000mR/hr) (1hr/3600sec) (20 sec/trip) = approx. 66.7mR Proc. Step TASK ELEMENT 8 STANDARD Grade Calculate dose received for transit inside Calculate dose received to be < 0.3mR per n/a containment. 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 Calculates accumulated dose received after Calculate total dose each worker has inspection to be 445.7mR for Worker #3 and n/a accumulated. S U 1989.7mR for Worker #4.
Comment:
Worker #3: 378mR + 67.7mR = 445.7mR Worker #4: 1922mR + 67.7mR = 1989.7mR PALISADES NUCLEAR PLANT Page 7 of 11 JULY 2008
JPM: SRO ADMIN 3 Proc. Step TASK ELEMENT 10 STANDARD Grade Inform Shift Manager that Worker #3 cant perform this work, the monthly limit of 50 mr to Determine and inform the Shift Manager a declared pregnant worker will be exceeded.
that monthly dose limit to the declared n/a Worker #4 will receive 67.3 mR if permitted to S U pregnant worker will be exceeded.
perform this job. Worker #4 can perform the job.
Comment:
CRITICAL STEP END OF TASK PALISADES NUCLEAR PLANT Page 8 of 11 JULY 2008
JPM: SRO ADMIN 3 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.
PALISADES NUCLEAR PLANT Page 9 of 11 JULY 2008
JPM: SRO ADMIN 3
- 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.
PALISADES NUCLEAR PLANT Page 10 of 11 JULY 2008
T-64 "B" T-64 "C" T-64 "A" T-64 "D" PSDT H
X H shielding X Letdown HX P-50D P-50A PCP PCP E-50B Steam E-50A Steam N-50 Gen Gen P-50C P-50B g PCP PCP shielding di n iel sh k
loc Air STEAM ROOM PALISADES NUCLEAR PLANT Page 11 of 11 JULY 2008