Scheme of sanitary inspection radiological department in the health care facilities

1. Name and the hospital address, office placing (the case, floor, adjacent premises).

2. Presence and condition of conducting documentation (magazine of dosimetry, instruction, etc.).

3. Office planning (premises, their squares).

4. Type of X-ray device, pressure and force in a current X - ray tube.

5. Appointment of X-ray device (diagnostic, therapeutic, fluorographic). Worker bunch is motionless, unidirectional.

6. Presence and ventilation type in procedural, top and bottom exhaust channels. Natural and artificial illumination.

7. Protection means X-ray irradiation of the doctor-radiologist workplaces (protective screens, lead glass, walls, doors, windows, individual protection frames). Calculation efficiency of their protection.

8. Presence and type of X-ray dosimeters, individual dosimeters, check of devices.

Appendix 2

Scenario – based task: "Hygienic estimation of antiradiation protection medical staff and radiating safety of patients at the radioactive substances application and other sources of ionizing radiation in the health care facilities"

In radiological department of hospital at the operation room of computer tomography, which was the source of X-ray and gamma radiations, with increase of level of ionizing radiation in the working zone of the personnel has been established. The radiologist has received an annual individual equivalent dose of the irradiation at level of 50 mZv.

1. Find necessary specifications and technical documentation for a hygienic estimation of the situation.

2. Carry out hygienic estimation and give hygienic conclusion about conformity of the irradiation to admissible levels. For a hygienic estimation find the basic dose border for a year of individual irradiation, established for the given category of irradiated persons.

3. Specify limit of an effective dose for a year for category A (persons who constantly or temporarily work with the sources of ionising irradiations) according to Radiation Safety Standard of Ukraine (RSSU-97).

Standard answer.

1. Individual equivalent dose received by doctor-radiologist, work with closed sources of γ - and Х- ray radiation exceeds an annual limit of dose for category A (personnel directly contacting to radioactive sources) in 2.5 times (standard is not more than 20 mSv/year).

2. Risk factors for health of doctor-radiologist are: increase of stochastic effects, including malignant diseases of the irradiated bodies; immunity defects that promotes occurrence of infectious and somatic diseases.

3. Radiation Safety Standard of Ukraine (RSSU-97).

4. Strengthening of individual radiation control behind radiation sources; reduction of operating time with ionising radiation sources; protection in distance; use of filters (materials containing lead) for separate parts and all body of the doctor at carrying out of procedures.

5. Individual equivalent dose received by doctor-radiologist for category A (personnel directly contacting to radioactive sources) exceeds standard limits in 2.5 times.

Не нашли, что искали? Воспользуйтесь поиском: