In-Service Inspection of Nuclear Power Plants - gnssn - International ...

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This publication is no longer valid Please see http://www-ns.iaea.org/standards/ 1.2.7. Ventilation equipment systems — system maintaining the underpressure in the sealed areas — quick-acting hermetic flap valves — sealing sheets of the assembly and transport openings in the sealed area floor (roof) — hermetic flap valve for higher parameters. 1.2.8. Systems of the process cooling water for important consumers — process cooling water pumps for important consumers — process water pipelines — process water storage tanks 1.2.9. Steam generator emergency feeding system — emergency feeding pumps — super-emergency feeding pumps — demineralized water storage tanks 1.2.10. Live steam piping including the steam generator relief valve bypass into the atmosphere and into the turbine condensers, reducing station 4.5/0.7 MPa 1.2.11. Feeding tanks with de-aerators 1.2.12. Emergency demineralized water makeup pumps 1 MPa 1.2.13. Primary circuit heating and aftercooling system — technological condensers — aftercooling pumps 1.2.14. Hermetic penetrating openings between the sealed and unsealed areas, and also — hermetic closure between the reactor shaft and the spent fuel storage pool transport channel (hydraulic closure) — reactor shaft lid 1.2.15. Quick-acting fittings 1.2.16. Pneumatic system ensuring the function of quick-acting fittings 50 Note: If every quick-acting fitting has an air-storage tank or is so designed that its function is ensured even in the case of inlet pipe rupture, then the inlet pipe is not included in the selected equipment.
This publication is no longer valid Please see http://www-ns.iaea.org/standards/ 1.2.17. Diesel generator station — diesel generator with the fuel tank — coolers 1.2.18. Connecting pipelines in the sealed areas among the selected equipment of the second safety class and the linked piping including the first isolation valve, and connecting pipelines among the fittings ranged with the first and second safety class 1.2.19. Automatic successive startup of loads (consumers) 1.2.20. Emergency electric systems ensuring the power supply to the safety systems and other equipment in the second safety class independent of the off-site electric power grid. The system includes: — power sources (diesel generators—see 1.2.18, accumulators, rectifiers, inverters) — switching equipment up to the electric motor cable heads 1.2.21. Equipment of the reactor protection and control system not included in the first safety class 1.2.22. Neutron flux monitoring system 1.2.23. Reactor emergency protection engineering features 1.2.24. Automatic controls and mechanisms, protection and lockouts of the particular safety systems including the individual communication elements, actuators, sensors, transducers, impulse lines and/or other elements of these circuits and communication routes. 1.2.25. Lockouts, automatons, automatic controls, individual communication elements and actuators of mechanisms and fittings of the technological equipment ranged with the second safety class. 1.2.26. Turbine and bypass plant automatic control (including the sensors, transducers, individual actuators and communication elements, impulse lines and other elements of the circuits). 1.2.27. Sensors monitoring the position of the turbine quick-acting valves including the corresponding elements of the circuit and the communication routes. 51
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