Directional Control Valve
Directional Control Valves (DCV) are used to position the control rods as a part of the BWR control rod drive system.
DCV type 2538 was designed to original specifications and fits exactly into the existing mounting configuration of the BWR Hydraulic Control Unit with no hardware modification needed.
Proven design with no reported malfunctions since initial installation in 1999. Seitz provides spare parts, replacement solenoids and maintenance services for the DCVs.
Technical data
Directional Control Valve
Qualifications
| Safety class | 2 |
| Seismic category | I |
| Electrical class | 1E passive |
| Seismic | 4.5 g; 10 – 31.5 Hz |
| Radiation | 3x10³ Gy |
| Qualification and design bases | IEEE 323-1974; IEEE 382-1980; IEEE 344-1987; ASME III NC Edition 95; SPTE/97/004 Rev. 1; GSKL SS-001 1-3 Rev. 1 |
| Qualified lifetime * | 20 years (under normal ambient conditions) |
* Maintenance
Every 10 years: It is recommended to replace all parts marked with an asterisk on the parts list in the respective repair kit Every 12 years: It is recommended to replace all solenoid coils that are operated with permanent energization / continuous operation
Harsh environment
| Medium temperature | 138 °C (280.4 °F) |
| Pressure | 138 bar (2002 psig) |
| Ambient temperature | 85 °C (185 °F) |
| Relative humidity | 100 % |
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Further information
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