An Example of the Diverse Actuation of ABWR Plant. Annex V (ABWR)
Creators
Description
The first ABWR plants, Kashiwazaki-Kariwa NPP No.6 and 7 (KK-6/7) of Tokyo Electric Power Company (TEPCO) Holdings, Incorporated, have been in commercial operation for more than 20 years. The instrumentation and control (I&C) system design includes diverse actuation, as does every Japanese ABWR. This Annex provides an overview of the safety features that are diverse from the RPS (Reactor Protection System) and related mechanisms of Japanese ABWR I&C systems. For ease of understanding, the description does not include the reactor core recirculation flow control system which also enables control of reactivity. ABWR reactor scram is achieved by Fine Motion Control Rod Drives (FMCRDs). FMCRD has two drive mechanisms of a motor drive and a hydraulic drive. Ordinal control rod withdraw or insertion for reactivity control is performed with the motor drive, however, quick control rod insertion for scram is carried out with the hydraulic drive.
Additional details
Identifiers
Publishing Information
- ISBN
- 978-92-0-103518-9
- Imprint Title
- Criteria for Diverse Actuation Systems for Nuclear Power Plants
- Imprint Pagination
- 98 p.
- Journal Page Range
- p. 53-57
- ISSN
- 1011-4289
- Report number
- IAEA-TECDOC--1848
INIS
- Country of Publication
- International Atomic Energy Agency (IAEA)
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 49059853
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Descriptors DEI
- CONTROL ROD DRIVES; HYDRAULICS; KASHIWAZAKI-KARIWA-6 REACTOR; KASHIWAZAKI-KARIWA-7 REACTOR; REACTIVITY; REACTOR CONTROL SYSTEMS; REACTOR CORES; REACTOR INSTRUMENTATION; REACTOR PROTECTION SYSTEMS; REACTOR SAFETY; SCRAM
- Descriptors DEC
- BWR TYPE REACTORS; CONTROL SYSTEMS; ENGINEERED SAFETY SYSTEMS; ENRICHED URANIUM REACTORS; FLUID MECHANICS; MECHANICS; POWER REACTORS; REACTOR COMPONENTS; REACTOR LIFE CYCLE; REACTOR SHUTDOWN; REACTORS; SAFETY; SHUTDOWN; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS
Optional Information
- Notes
- 3 refs., 2 figs., 4 tabs.