1.8 Radiation preservation work unit to establish personal responsibility for radiation protection and environmental protection, the establishment of worker safety education and training and examination system, earnestly implement and comply with the provisions relating to receipt of radiation protection and environmental protection to prevent the occurrence of various types of radiation accidents. Personnel engaged in radiation work, you must have basic knowledge of radiation protection radiation protection material, understand the basic principles of ALARA, familiar radiation protection regulations hospital for radiation protection engineering companies, and trained staff assessment made rear radiation certificate You may participate in the work. 1.9 in the presence of radiation in space, as well as capable of emitting radiation in the article (except 1.4), there must be "ionizing radiation" sign (Appendix D). 2.1 Basic Principles 2.1.1 The dose-limiting system in order to prevent the occurrence of non-stochastic effects, and the incidence of stochastic effects is reduced to an acceptable level, the dose-limiting system with the following restrictions on normal exposure. 2.1.2 All practices and facility siting, design, operation and decommissioning, must comply with the three principles of radiation protection: A Justification Practice: Before any practice associated with radiation exposure purposes of radiation protection door size, has to go through Justification judge, confirmed this practice has a legitimate reason to get benefits outweigh the costs (including health and non-health damage costs of damage). B. Optimization of radiation protection: Avoid all unnecessary exposure, taking into account the conditions of economic and social factors, all radiation exposure should be kept as low as reasonably achievable level. C. Personal dose limit: The dose limit restrictions on personal exposure suffered. Hebei Ericsson radiation protection experts, radiation protection, provided by the Hebei Ericsson Ericsson Hebei Medical Engineering Limited. Ericsson Hebei Medical Engineering Co., Ltd. (www.hslixin.com) strong, credible, Hengshui in Hebei medical device manufacturing equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Hebei Ericsson and you hand into the brilliant, for a better future!