IONISING RADIATION RISK ASSESSMENT FOR WORK INVOLVING UNSEALED SOURCES

Title of experiment
IRR Assessment Number (RPO to allocate)
Description of experiment
A method statement or protocol that briefly describes the procedure must be attached to this assessment

DESCRIPTION OF UNSEALED SOURCE TO BE USED

Radioisotope
Type(s) of ionising radiation and energies emitted / Emissions / Energy of emissions
Radiochemical form
Half life
Maximum activity of stock (MBq) and maximum volume
Maximum activity used per experiment
Estimated frequency of experiment / Choose an item. /

ADDITIONAL HAZARDS

Is the stock or any forms of the isitope volatile
Are other hazardous materials being used during this experiment / Genetically modified organisms
Biohazardous material (biological agents, cell cultures etc)
Chemicals / Attach a separate COSHH assessment to this form
Other

JUSTIFICATION OF WORK WITH IONISING RADIATION

Yes / No / Details / Justification
Are other methods available to carry out your research without the use of radioisotopes / ☐ / ☐ /
Can the radioisotope be substitutes by a safet alternative / ☐ / ☐ /

FACILITIES AND EQUIPMENT

Building and room where work is to be carried out (please list all areas to be used)
Equipment reguied during procedure (please list all equipment required) / Details
Fume cupboard / ☐ /
Microbiological safety cabinet / ☐ /
Centrifuge / ☐ /
Liquid scintillation counter / ☐ /
Water bath / ☐ /
Other equipment (please list) / ☐ /

EXTERNAL & INTERNAL RADIATION EXPOSURES

External dose rates - calculated
Extremity dose rate close contact (e.g. hand exposed to 5 ml syringe) in mSv/hr / For 1 MBq / For maximum MBq/experiment
Time taken to deliver annual extremity dose limit of 500 mSv
Wholebody dose rate (e.g. from a 30 cm point source) in mSv/hr / For 1 MBq / For maximum MBq/experiment
Time taken to deliver annual whole body dose limit of 1 mSv based on maximum MBq/experiment
Internal dose rates
Inhalation amount that would deliver annual University dose limit of 1mSv / Committed effective dose from inhalation =X mSv/MBq = Xul of stock
Ingestion amount that would deliver annual University dose limit of 1mSv / Committed effective dose from ingestion =X mSv/MBq = Xul of stock

CONTROL MEASURES TO PREVENT EXPOSURE

Designation of facility
Details of radiation shielding used ot reduce extenral exposure
Estimation of efficacy of shielding proposed
Details of meausres taken to avoid inhalation or ingrstion during procedure
Personal dosimtery required? And details
Special precautions for use
Type of contamination monitoring to be carried out
Measurement of external dose (if required)

EXPECTED WASTE PRODUCES PER EXPERIMENT (IN MBQ)

Aqueous / To sink / Organic scintillant / Decay
N/A
Soild waste / As VLLW / For Decay / Soild
N/A
Gaseous emissions expected
Retained for further use
If GM or Biohazarouds material is used during this experiment outline the procedures proposed to inactivate this waste

EMERGENCY PROCEDURES

Spillages / See Local rules
Personal contamination / See Local rules
External contamination dose (mSv/min/MBq) / Uniform deposit / 0.05 ml droplet

AUTHORISATION OF WORK

Name / Signature / Date
Assessment completed by
Reviewed and approved by CRPS
Reviewed and approved by RPO

ASSESSMENT READ AND UNDERSTOOD BY

Name of Radiation Worker / Signature / Date / Signed off as competent and able to work unsupervised by / date