Document O1OK3VmBqZGgDRpOxJbwM6q5X

is common to set aside "active areas" in which work with radiation or radioactive materials is done Special requirements or services may then be supplied only to those directly involved in the work Film badges and dosimeters should be issued to all personnel working m areas where surveys with appropriate instruments indicate actual or potential exposure The question o! whether or not an employee should be repeatedly issued film coverage can be better answered after the actual ex perience of a group of such employees has been analyzed Repeated "zero" exposure may be reason to discontinue issuance But finding a group m which even one positive result occurred at random may be reason to cover the whole group It may be decided to require coverage as a matter of protection against unwarranted claims as a matter of company policv Such employees as are issued film badge (and/or dosimeters) should be required to wear a film badge that is developed and re placed at regular intervals determined by the radiation level in the area Pocket dosimeters (several types including pocket alarms are available commercially) may be worn to in dicate exposure during any part of the film badge period The film badge is read to establish the validity of a discharged dosi meter The pocket dosimeters should be read and reset by means of a charger at the end of each partial period they are used to measure (Fig 44-22 shows a radiation detection de vice Fig 44-23 gives an exploded view of a radiation film badge) Management may have film badges and dosimeters serviced, films developed, and exposure records maintained as a part of plant operations Depending upon the work load, it may prove more economical and provide better control and protection for a plant to purchase this service Several film badge service companies are available In either case, all monitonng records should be re tained by management Legal counsel will advise on what steps should be taken to en sure that such records will be admissible in court cases It is not wise to allow a person to work alone with large quantities of radioactive materials or on the off-shift since adequate help will not be available to cope with spills. Fic 44-22 --Mobile personnel monitors at Argonne National Laboratory are provided throughout the facility for personnel working with radioactive matenals The instruments shown are designed to be used by a radiation worker to monitor his hands and clothing Courtesy Argonne Notional Laboratory losses of material, or injuries involving radio activity Adequate rules covering special clothing, bathing facilities, and protective equipment are required Wearing contaminated cloth ing outside the control limits must be pro hibited If there is danger of ingestion of radioactive material, then smoking and eating should be limited to "clean" areas Medical examinations Applicants for work with radiation devices and radioactive substances should have a 1491