The Improvement of Overtemperature DeltaT and Overpower DeltaT Shutdown Algorithm

DOI

10.2991/fmsmt-17.2017.148How to use a DOI?

Keywords

Overtemperature DeltaT; Overpower DeltaT; Digital; Analog technology; Shutdown margin.

Abstract

The Overtemperature OTDeltaT design is based on radial core peaking factors being no worse than design. It is not intended to protect for adverse radial power (quadrant tilt such as might be caused by misaligned control rods). The OTDeltaT RT protects the thermal design limit for departure from nucleate boiling (DNB), with resultant overheating of the fuel rod cladding, by preventing the combination of power, power distribution, pressure, and core inlet temperature that would violate the allowable design limit for the DNB ratio. The DNB ratio also depends upon the coolant flow into the core. DNB protection for flow transients is provided by the reactor coolant low flow RT and by the RCP underspeed RT. Coolant flow is considered constant for the OTDeltaT RT. The Overpower OPDeltaT design is based on radial core peaking factors being no worse than design. It is not intended to protect for adverse radial power. The Overpower OPDeltaT reactor trip protects the core against high linear power density. The article focus on the compare between analog and digital control technology for OTDeltaT OPDeltaT algorithm. By using the digital control technology, the algorithm and signal process get best improvement. The protect function get more safety.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Gang Li
PY  - 2017/04
DA  - 2017/04
TI  - The Improvement of Overtemperature DeltaT and Overpower DeltaT Shutdown Algorithm
BT  - Proceedings of the 2017 5th International Conference on Frontiers of Manufacturing Science and Measuring Technology (FMSMT 2017)
PB  - Atlantis Press
SP  - 762
EP  - 769
SN  - 2352-5401
UR  - https://doi.org/10.2991/fmsmt-17.2017.148
DO  - 10.2991/fmsmt-17.2017.148
ID  - Li2017/04
ER  -