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State of California-Health and Welfare Agenc Department of Health Services Page 6 of 7 pages RADIOACTIVE MATERIAL LICENSE License Number. 1276-39 Amendment Number 76 28. Special Requirements for Remote Afterloading Device Spot Checks and Calibration: (a) At intervals not to exceed daily or prior to use(if used less frequently), the following tests shall be performed: (1) Source position indicator(s). (2) Source positioning reproducibility,to within±1 mm. (3) Inspection of guide tubes for kinks and other imperfections. (b) Timing device accuracy shall be performed at intervals not to exceed monthly or prior to each use (if used less frequently). (c) Source travel time error shall be performed at each source loading. (d) At each source loading and intervals not to exceed three months, (one month for Ir-192) thereafter, the licensee shall determine the dose accuracy to within±5 percent. 29. Remote afterloading devices authorized by this license shall not be operated unless the licensee has in his possession detailed written instructions specific for the make and model of the remote afterloading device. 30. Each remote afterloading device shall be inspected and serviced in accordance with the manufacturer's recommendations. 31. For remote afterloading devices, specifically authorized personnel shall: (a) Install, relocate, maintain and repair devices containing radioactive material. (b) Leak test, replace and dispose of sealed sources containing radioactive material used in devices. 32. Subsequent to each source loading, radiation surveys shall be performed prior to human use as follows: (a) A radiation survey shall be made of the unit source housing, with the source(s) in the shielded position. The maximum radiation levels at 20 centimeters from the surface of the source housing shall not exceed 3 milliroentgens per hour. (b) Records of survey results shall be maintained for inspection. 33. Immediately after retracting the source from the patient into its shielded position in the remote afterloading device, a radiation survey shall be made of the patient with a portable radiation detection survey instrument to confirm that the source has been removed from the patient. Records of each survey shall be maintained. 34. Treatment time calculations and data entry for remote afterloaders shall be individually verified by the responsible authorized user physician immediately prior to treatment. 35. Production or processing of radiopharmaceuticals for the purpose of commercial distribution to other licensees is not authorized by this license. 36. When using mobile nuclear service companies, the licensee shall retain all responsibilities for the use of radioactive material authorized by this license. 37. For a period not to exceed 60 days in any calendar year, a visiting physician is authorized to use licensed materials for human use under the terms of this license, provided the visiting physician: (a) Has the prior written permission of the hospital's Administrator and its Radiation Safety Committee.