6. Normal operating transients
PWR boilers are subject to numerous operating transients. This section describes the most frequent situations. The transients presented here relate to a 900 MW unit, by way of example.
6.1 Power variation by steps and ramps
The load variations to which, by design, the unit may be subjected in operation via the turbine-generator set consist of power steps of up to ±10% of rated power, and, more frequently, programmed power variations of up to ±5% of rated power per minute. During these transients, there must be no automatic shutdown, and no secondary discharge to bypass or atmosphere. Two examples are given in paragraphs 6.1.1
The Ultimate Scientific and Technical Reference
This article is included in
Nuclear engineering
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Normal operating transients
Conclusion
Bibliography
Also in our database
Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
Areva
Westinghouse
Mitsubishi
Babcock Wilcox
The Ultimate Scientific and Technical Reference
