Section II - Definitions II. DEFINITIONS dose: The amount of energy deposited in body tissue due to radiation exposure. exposure: The general condition of being subjected to ionizing radiation, such as by exposure to ionizing radiation from external sources or to ionizing radiation sources inside the body. In this document, exposure does not refer to the radiological physics concept of charge liberated per unit mass of air. general employee: An individual who is either a DOE or DOE-contractor employee; an employee of a subcontractor to a DOE- contractor; or a visitor who performs work for or in conjunction with DOE or utilizes DOE facilities. linked or linkage of records: The referencing of, either by listing on the paperwork or by computerized means, all other documents or database entries associated with an individual record, such that a complete package of information for that record can be readily assembled. radiological worker: A general employee whose job assignment involves operation of radiation producing devices or working with radioactive materials, or who is likely to be routinely occupationally exposed above 0.1 rem (0.001 sievert) per year total effective dose equivalent. shall: Within the context of this guide, the word "shall" is used to designate requirements from 10 CFR 835, DOE Orders, the RCM, and secondary documents invoked by them. should and may: Within the context of this Guide, the words "should" and "may" are used to represent optional program recommendations and allowable alternatives, respectively. Deviations generally require no specific approval or justification; however exceptions or deviations to "should" provisions referenced directly from the RCM require specific justification and approval in accordance with Article 113.3 of that manual (i.e., RCM 113.3).