Safety Radiation Protection Manual This Columbia Radiation Safety Program Manual (this Manual) was approved by the Radiation Safety Committee of Columbia University, Lamont-Doherty Earth Observatory, Nevis Laboratories and Barnard College, and the Joint Radiation Safety Committee of Columbia University, New YorkPresbyterian Hospital and New York State Psychiatric Institute (the foregoing institutions being referred to collectively as the Program Institutions) and supersedes all other manuals, memoranda or notices relating to radiation safety issued prior to the date of this Manual. This Manual includes the policies and procedures of the Radiation Safety Program of the Program Institutions that govern all work involving the use of radionuclides, radiation–generating equipment and other sources of ionizing radiation. These radiation policies and procedures meet all regulatory requirements of the New York City Department of Health and Mental Hygiene, the New York State Department of Health, the New York State Department of Environmental Conservation and the federal Nuclear Regulatory Commission. These policies and procedures apply to all personnel working with radiation or radioactive materials at the facilities or campuses described below and/or any off-site location where the Columbia University Chief Radiation Safety Officer has cognizance under radioactive materials licenses or permits granted to Columbia University. To the extent that this Manual relates to use of radiation in research, it may be read with its companion Research Radiation Safety Handbook available on the website of the Columbia University Executive Vice President for Research.