THE SUCCESSFUL OPERATION OF THE PERMISSIBLE LEVEL CONCEPT OF RADIATION CONTROL NECESSARILY ENTAILS A COMPREHENSIVE SYSTEM UNDER WHICH EXPOSURE MUST BE RECORDED AND EMPLOYEES NOTIFIED OF THEIR EXPOSURE HISTORY. IN AN INVESTIGATION OF RECORD KEEPING NECESSARY TO PROCESS RADIATION CLAIMS, QUESTIONNAIRES OR LETTERS WERE RECEIVED FROM 45 STATE AGENCIES CONCERNED WITH THE CONTROL OF RADIATION HAZARDS, 43 STATE WORKMEN'S COMPENSATION ADMINISTRATORS, EIGHT CANADIAN HEALTH AGENCIES, AND SIX CANADIAN WORKMEN'S COMPENSATION BOARDS. THERE IS NO EXISTING RECORD KEEPING SYSTEM FOR PROCESSING CLAIMS WHICH IS SATISFACTORY IN ALL IMPORTANT ASPECTS. CLAIMANTS HAVE NO REASONABLE ASSURANCE OF CONSISTENTLY EQUITABLE TREATMENT. A SYSTEM OF RADIATION RECORD KEEPING AS A SHARED RESPONSIBILITY OF STATE AND FEDERAL GOVERNMENT AGENCIES AND PRIVATE INDUSTRY IS PROPOSED. SOME OF THE DETAILED EXPOSURE RECORDS WHICH SHOULD BE MAINTAINED FOR THREE YEARS BY THE EMPLOYER ARE (1) PERSONAL EXPOSURE RECORDS, (2) EMPLOYEE MEDICAL HISTORY, (3) SOURCE RECORDS OF POTENTIALLY HAZARDOUS RADIATION, (4) AREA MONITORING AND CONTAMINATION SURVEY RESULTS, AND (5) EXPOSURE MEASUREMENT DEVICES. THE PROPOSED SYSTEM IS DISCUSSED IN DETAIL. EXAMPLES OF RADIATION EXPOSURE FORMS ARE GIVEN IN THE APPENDIX. AN EXTENSIVE BIBLIOGRAPHY IS INCLUDED. RELATED STUDIES ARE VT 003 648 AND VT 003 649. THIS DOCUMENT IS AVAILABLE AS GPO Y3.AT7--2R11/28/VIII FOR 40 CENTS FROM SUPERINTENDENT OF DOCUMENTS, U.S. GOVERNMENT PRINTING OFFICE, WASHINGTON, D.C. 20402. (PS)