Dosimetry Protection Standards Flashcards
List Sources of Governing Documents pertaining to the radiation health protection program
NAVMED P-5055 Rad Health Protection Manual
Rad Controls for Ships
Nuclear WPN’s Radiological Controls Program
Radiological Affairs Support Program Manual
Purpose of the Radiation Health Protection Program
Medical responsibility to maintain and protect the health of personnel exposed to ionizing radiation or radioactive contamination.
- Detecting & Identifying radiation & contamination hazards
- Determining evaluating and documenting personnel exposure
- Performing radiation medical exams
- Submitting required reports and maintaining applicable records
- Providing Training
- Assisting in CBRNE warfare defense
All Radiation Protection Programs seek
To Maintain ALARA
Do not Include:
Medical/Dental Procedures
Therapeutic Radiation Treatments
Background radiation
Dose Limits to ionizing radiation including fetal development
Total Effective Dose Equivalent (TEDE) - 5 REM a year and not to exceed 3 rem in a quarter
Shallow dose equivalent (skin) 50 rem year. 0.007
Extremities: 50 rem annual
Eye dose: 15 rem annual. 0.3cm
Pregnant: 500mrem during gestation: if over 500mrem or within 50mrem by the time of declaration activity will be in compliance as long as addition dose does not exceed 50mrem
Organ dose: 50rem annual (sum committed dose equivalent and deep dose equivalent)
Public: 100 mrem TEDE
Non-Radiation Worker: 500mrem TEDE
Control Areas P-5055
Controlled area: area outside of a restricted aea but inside the site boundary, access to which can be limited by the activity for any reason
Restricted area: Area limited by the command for the purpose of protecting individuals against undue risks from exposure to radiation or radioactive materials
Radiation area: Any accessible area which an individual could receive a deep dose equivalent (whole body) in excess of 5 mrem in any 1 hour at (1 foot) from a radiation source or penetrating radiation
High Radiation Area: Any accessible area which an individual could receive a whole-body dose in excess of 100mrem in any one hour at one foot or penetrates from a surface
Very High Radiation Area: Any area accessible to personnel in which there exist ionizing radiation at such levels that an individual could receive in excess of 500rad in hour at 1 meter or from any surface that radiation penetrates.
Airborne Radioactivity Area: room, enclosure, or area in which airborne radioactive material exists in concentration greater than DAC or such an individual could receive 0.6% of an ALI w/o respirator equipment
Purpose of a local Control Level (LCL) or administrative Control Level (ACL)
Further minimize personnel radiation exposure AS LOW AS RESEASONABLE ACHIEVABLE.
Dose Limits and local control levels (LCL’s) per NNPP program
Same as P-5055
exception:
Pregnant Woman: 500mrem during gestation not to exceed 50mrem/month during pregnancy
Limited Radiation Worker: 100mrem
Non-rad worker: 100mrem
As many personnel as possible will be assigned 500mrem or less annual
Written approval from CRA, XO, CO prior to exceeding
Control Level areas per NNPP program
Radiation Area: Accessible area where a major portion of the body could be exposed to radiation level of 1 mrem per hour but less than 100mrem/hr
High Radiation Area: Accessible area where major portion of the body could be exposed to radiation levels at or greater than 100mrem/hr
TLD/EPD and Control entry point Authorization needed
Exclusion Area: Area where access would result in personnel exceeding a radiation exposure limit in a very short time. Includes volume of reactor when critical. Access forbidden
Contamination Area: Any uncontrolled area that has a loose beta/gamma above 450 uuCi/100cm or loose alpha of 50 uuCi/100cm or greater
High Airborne Area: Any uncontrolled area with airborne concentration above limits
Dose limits and ACL’s Radiological Support Program (RASP)
Based of P-5055 and Title 10 of Code of Fed regulations (CFR)
Dose limits and control levels for Nuclear WPN’s program
Same as P-5055
exception:
18 y/o or younger is restricted to 1.25 rem TEDE for the year
Radiation control level of 500mrem/yr is an “ALERT LEVEL” which should iniate a review of the commands work practices and personnel assigned.
500mrem is assigned for the purpose of reducig total man-rem from stowing, maintaining, or handling Navy nuclear weapons
Extension of alert level with written approval from CO
Exposure limit to save a life / save equipment
Save a life: No limit
Save Equipment: 10 rem NNPP/P-5055
if an individual has been exposed to more than 3 rem in a calendar quarter or 5 rem in a year as a result of an emergency. Shall be reported as an overexposure, restricted from any additional exposure.
If exceeding quarterly or yearly limits as a result of an emergency shall be removed from duties involving occupational exposure.
