Published 1992
| Version v1
Book
An inherent boron dilution mechanism in pressurized water reactors
Creators
- 1. Finnish Centre for Radiation and Nuclear Safety (STUK), Helsinki (Finland)
Description
The behaviour of boric acid during natural circulation together with Small Break LOCA experimental data shows that in present-day pressurized water reactors (PWR) there exists an inherent mechanism which can accumulate boron- free condensate in the cold leg loop seals. During reflux/boiler condensation, the accumulation rate is typically about 1.6 m3/min for a 1300 MWe UTSG plant. This observation, combined with the results of analyses of externally caused boron dilution transients, suggests that SB LOCA could become a reactivity induced accident (RIA) initiator. The severity of the reactivity accident potential is yet to be quantified. (author). 3 figs., 2 tabs., 30 refs
Additional details
Publishing Information
- Publisher
- Centre d'Etudes de Cadarache.
- Imprint Place
- Saint-Paul-lez-Durance (France)
- ISBN
- 2-72-72-0157-5
- Imprint Title
- Transient two-phase flow: ''Current issues in system thermal-hydraulics''
- Imprint Pagination
- 609 p.
- Journal Page Range
- p. 499-515.
Conference
- Title
- CSNI specialist meeting on transient two-phase flow.
- Dates
- 6-8 Apr 1992.
- Place
- Aix-en-Provence (France).
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 26053158
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- BORIC ACID; DILUTION; LOSS OF COOLANT; NATURAL CONVECTION; PWR TYPE REACTORS; REACTIVITY INSERTIONS
- Descriptors DEC
- ACCIDENTS; BORON COMPOUNDS; CONVECTION; ENERGY TRANSFER; ENRICHED URANIUM REACTORS; HEAT TRANSFER; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; OXYGEN COMPOUNDS; POWER REACTORS; REACTOR ACCIDENTS; REACTORS; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS