NM Radiation Safety Flashcards
Which regulations cover the medical use of NM?
IRR17: Protects staff and the public
IRMER17: Protects patients
EPR16: Accounting for and disposing of sources
Requirements of a risk assessment
IRR17 req Prior assessment
Description of work Location Exposed persons & dose constraints Nature of hazard Doses and dose rates Contamination Accidents Control measures
What are examples of control measures?
- Procedures and training
- Controlled / supervised areas
- Contamination monitoring
- Local Rules
When do you require local rules?
Must have for Controlled Areas
May have for Supervised Areas
Requirements for Local Rules
- Identify designated areas
- Name of RPS
- Arrangements for restricting access
- Dose investigation level
- Summary of work instructions
- Contingency arrangements
Must be signed by all
What the role of an RPS?
Ensures compliance with the local rules
What is the contingency procedure for a spill?
Wear Personal Protective Equipment Wipe and bag Monitor (Wipe and re-monitor) Dispose Record
Procedure for radionuclide-therapy emergency
Fire? Injuries? – take precedent Notify RPS/RPA/management Evacuate? Make equipment safe Reduce spread of contamination Prohibit entry
What are the steps in a decontamination process?
Monitor
Wash
Not shower
Limit the spread
What is the lost source procedure?
Report to RPA / RPS
Stop moving things - No Cleaning - Retain Rubbish
Monitor!
Contacts for a radiation emergency
RPA / RPS / HoD Switchboard (out of hours) Director of Quality and Effectiveness Police EA HSE
3 IRMER requirements for an exposure
Justified (benefit vs risk)
Optimised (ALARP)
Dose limited
3 Principles of radiation protection
Time
Distance
Shielding
How to restrict internal radiation
Minimise ingestion, inhalation, absorption
Gloves, apron
What are examples of special cases under IRMER?
Pregnancy
Breastfeeding
Paediatrics
Research -ARSAC/Ethics approval
