On February 27, 2014, Beijing issued the notice of Beijing local standards (No. 1 of 2014), officially approved the technical specification for safety of underground confined space operation part 3: configuration of protective equipment and facilities (DB11 / 852.3-2014), and the implementation date was June 1, 2014
so far, the series of local standards of “technical code for safety of underground confined space operation” have been completed The series of local standards are drafted under the background of frequent safety accidents in confined space and nonstandard safety measures of operation units. They are divided into technical specifications for safety of underground confined space operation part 1: General principles, technical specifications for safety of underground confined space operation part 2: gas detection and ventilation, and technical specifications for safety of underground confined space operation part 2: gas detection and ventilation The three parts of “technical code for safety of underground confined space operation part 3: allocation of safety protection equipment and facilities” standardize the safety technical requirements of underground confined space operation from three aspects: basic requirements of underground confined space operation, gas detection and ventilation, and ventilation of safety protection equipment and facilities, 1t provides detailed guidance for the operation units to implement various safety protection measures and safe operation procedures, and also provides a grasp and basis for strengthening the safety supervision of limited space operation, which plays an important role in the safety supervision of limited space in recent years. 1n the next step, we will vigorously carry out the publicity and implementation of local standards, give full play to the normative and guiding role of standards, promote the implementation of the main responsibility of safety production of underground limited space operation units, and effectively prevent the occurrence of safety accidents in limited space
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