Nuclear Safety

Date: 2015-10-07; view: 472.

South-Ukrainian NPS

1. The construction of SU NPS began in the spring of 1975.

2. The first power unit was launched into operation in December 1982.

3. At present, it is one of the largest power-generating enterprises in the South of Ukraine.

4. SU NPS operates three power units with а total capacity of 3000 MW.

5. The first two ones comprise a WWPR-1000 reactor.

6. The station's thermal arrangement consists of two circuits.

7. The first circuit includes the reactor unit, four circulation loops, steam generators, and main circulating pumps.

8. The fuel core, structural elements guiding the coolant, and reactivity controls are in the reactor's shell.

9. Highly enriched uranium dioxide is used as fuel.

10. The secondary (non-radioactive) circuit consists of four steam generators and а 1,000 MW turbine generator set.

11. The station's control combines central panel monitoring, remote control facilities, and automatic regulation.

12. Power control and scram functions are performed by moving the neutron absorbers in and out of the core.

1. Nuclear safety should prevent nuclear and radiation accidents and limit their consequences.

2. Nuclear safety strategy includes five layers of defense.

3. The first defense barrier in design is the inert ceramic quality of nuclear fuel.

4. The second layer of defense covers the quality of fuel cladding.

5. The third layer of defense is the reactor pressure vessel.

6. The fourth layer of defense includes the resistance of the containment building.

7. The fifth layer of defense depends upon the reactor building or а second outer containment building.

8. Redundancy in engineering is the duplication of critical components of а system to increase reliability of the system.