Automated Chemistry Control System for CANDU Reactors
Author Information
Author(s): J.R. Dean, R.B. Stewart
Primary Institution: Atomic Energy of Canada Limited
Hypothesis
Can an automated system effectively control the chemistry of steam generators in CANDU nuclear reactors?
Conclusion
The automated chemistry control system successfully maintained hydrazine concentrations and controlled dissolved oxygen levels in the boiler.
Supporting Evidence
- The system could control the boiler's chemistry within set limits for an extended period of time.
- Hydrazine concentrations could be maintained automatically.
- The computer algorithm was appropriate for control in either AVT or CPT modes.
Takeaway
This study shows how a computer can help keep the water in nuclear reactors clean and safe by automatically adding the right chemicals.
Methodology
The study involved developing an automated system that uses continuous on-line sensors to monitor and control the chemistry of steam generators.
Limitations
The study did not demonstrate a complete chemistry control system at Boundary Dam, focusing instead on key elements for testing.
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