RAD HP

Question 1

What are the Duke and NRC limits on Total Effective Dose Equivalent (TEDE)?

Answer 1

• NRC TEDE limit is 5 rem per year
• Duke Admin limit is 2 rem per year with a maximum limit of 5 rem per year with an extension.

Question 2

What are the Duke and NRC limits on Total Effective Dose Equivalent (TEDE) for a declared pregnant worker?

Answer 2

• NRC limit is 500 mrem for the term of the pregnancy
• Duke Administrative limit of 50 mrem/month, 450 mrem (Duke Admin limit) for the term of the pregnancy

Question 3

What is a Planned Special Exposure (PSE)?

Answer 3

An infrequent exposure to radiation separate from and in addition to the normal yearly NRC dose limits

Question 4

What are the dose limits for a Planned Special Exposure (PSE)?

Answer 4

Lifetime dose limits for PSEs are 5 times each of the yearly NRC limits:
- TEDE: 25 Rem
- CDE: 250 Rem
- LDE: 75 Rem
- SDE: 250 Rem

Question 5

Who must approve a Planned Special Exposure (PSE)?

Answer 5

• The RP Manager
• Station Manager
• Site Vice President

Question 6

1 DAC-hr is equivalent to how many mrem?

Answer 6

2.5 mrem

Question 7

What are the Emergency Worker Exposure Limits?

Answer 7

TEDE Limit (Rem)
- 5 All activities during the emergency.
- 10 Protecting valuable property when lower dose is not practicable.
- 25 Lifesaving or protection of large populations when lower dose is not practical per EPA-400-R-92-001, Manual of Protective Action Guides and Protective Actions for Nuclear Incidents.
- Greater Than 25 Lifesaving or protection of large populations, only if individuals receiving exposure is a volunteer, and fully aware of risks involved.

Question 8

Whose permission is required to exceed Duke Energy Annual
Dose Guidelines up to a maximum of 5 Rem for an emergency exposure?

Answer 8

Emergency Coordinator

Question 9

What notification does a worker get if they reached 80% or greater of their administrative dose?

Answer 9

Alert Flag

Question 10

Whose permission is required to enter a High Radiation Area or Locked High Radiation Area if the worker has received an ALERT Flag?

Answer 10

Must receive RP supervision approval.

Question 11

What notification does a worker get if they reached 90% or greater of established administrative guideline

Answer 11

Exclude Flag

Question 12

What must a person who gets and exclude flag do to enter the RCA?

Answer 12

Receive a dose extension approved by their Section Manager and the RP manager.

Question 13

After getting an Exclude flag, the worker can request an extension up to 4500 mrem and it must be approved by whom?

Answer 13

Requesting Manager
and
RP Manager

Question 14

Who must approve extensions above 4500 mrem?

Answer 14

Requesting Manager, RP Manager, Plant Manager, and the Site Vice President.

Question 15

What is a radiation area?

Answer 15

≥ 4 and < 80 mrem/hour @ 30 cm

Question 16

What is a high radiation area?

Answer 16

≥ 80 and < 800 mrem/hour @ 30 cm

Question 17

What is a locked high radiation area?

Answer 17

≥ 800 mrem/hour @ 30 cm

Question 18

What is a very high radiation area?

Answer 18

≥ 500 rads/hour at 1 meter from any source or
surface

Question 19

What is a contaminated area?

Answer 19

≥ 1,000 and < 100,000 βγ
OR
≥ 20 α dpm/100 cm

Question 20

What is a high contaminated area?

Answer 20

≥ 100,000 βγ dpm/100 cm

Question 21

What are the Very High Radiation Areas at Catawba?

Answer 21

• Fuel Transfer Tube
• Incore Sump below the reactor vessel during Incore Detector Thimble Guide Tube withdrawal

Question 22

How many anticipated Dose rate alarms can be received if discussed during RP briefing?

Answer 22

3

Question 23

What are the requirements if an unanticipated dose rate alarm is received?

Answer 23

Immediately stop work and contact RP