Detail of EJ/T 20201-2018

Introduction of EJ/T 20201-2018

Technical requirements of wire intercom communication system for physical protection of nuclear material and nuclear facilities English 1 Scope This standard specifies the technical requirements of wire intercom communication system for physical protection of nuclear material and nuclear facilities (hereinafter referred to as "wire intercom communication system") in fixed places. This standard is applicable to the design and acceptance of wire intercom communication system in the physical protection project of nuclear material and nuclear facilities in constructed, extended and renovated fixed places. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. GB 4208-2008 Degrees of protection provided by enclosure (IP code) GB 8702 Controlling limits for electromagnetic environment GB/T 15408 Technical requirement of power-supply for security & protection system GB/T 30148-2013 Security alarm equipment - EMC immunity requirements and test methods GB 50057 Code for design protection of structures against lightning GB 50343 Technical code for protection against lightning of building electronic information system GB 50348-2004 Technical code for engineering of security and protection system EJ/T 1054 Physical protection of nuclear material and nuclear facilities 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 physical protection system security & protection system that has the functions of detection, delay and response and is used to prevent nuclear facilities and nuclear materials from sabotage and nuclear materials from stealing, robbery or unauthorized transfer and use 3.2 wire intercom communication system communication system with the functions of calling, talking and dispatching, which is composed of dispatching unit, communication switch, intermediate transmission equipment, extension unit, system power supply and the like through the generic cabling system or Ethernet 3.3 dispatching unit user extension unit with functions of calling, dispatching, etc., which is provided to the on-duty personnel in the physical protection and security control center for operation and use 3.4 communication switch device in system that has the functions of accessing, relaying, regenerating, amplifying, distributing, forwarding, switching or controlling various signals, or device that provides call control function based on packet switched network using program-controlled software 3.5 extension unit device installed in duty room, at the entrance and exit, etc., with functions of calling and talking 4 General 4.1 The wire intercom communication system shall determine the system scheme, architecture and function according to the physical protection level and design basis threat, and shall meet the requirements of the physical protection system for wire intercom communication. 4.2 The wire intercom communication system shall be safe, reliable, expandable and flexible, so as to be practical, reliable, technologically advanced, economical and reasonable. 4.3 The equipment used in the wire intercom communication system shall meet the requirements of national laws, regulations and relevant standards. 5 System design requirements 5.1 System design principles 5.1.1 Standardization and security

Contents of EJ/T 20201-2018

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 General 5 System design requirements 6 System functional requirements 7 System equipment requirements 8 Installation requirements 9 Security requirements 10 Reliability requirements 11 Electromagnetic compatibility requirements 12 Requirements for protection against lightning and earthing 13 Requirements for environmental adaptability Annex A (Informative) System architecture of wire intercom communication system