Effect of water column type of DVI injection on the direct ECC bypass
- 1. Korea Atomic Energy Research Institute, Taejon (Korea, Republic of)
Description
The direct ECC bypass fraction is strongly dependent on the ECC injection angle and the regional flow characteristics in the reactor downcomer annulus. The ECC film spreading width is dependant on the linear momentum of ECC water and the wall resistance in the downcomer. If the ECC water is injected into the downcomer annulus as a water column rather than forming a film shape by impinging jet, the wall resistance becomes to be minimized compared to that of the impinging injection mode. In this experiment, the ECC water column is injected into the downcomer from the cap of the downcomer annulus. Also, the relative angle between the cold leg and the vertical DVI nozzle is varied from -15 degrees to +52 degrees to investigate the regional dependency on the direct bypass of ECC water in a downcomer annulus
Additional details
Publishing Information
- Publisher
- KNS
- Imprint Place
- Taejon (Korea, Republic of)
- Imprint Title
- Proceedings of the KNS autumn meeting
- Imprint Pagination
- 1466 p.
- Journal Page Range
- p. 543-544
Conference
- Title
- 2004 autumn meeting of the KNS
- Dates
- 28-29 Oct 2004
- Place
- Yongpyong (Korea, Republic of)
INIS
- Country of Publication
- Korea, Republic of
- Country of Input or Organization
- Korea, Republic of
- INIS RN
- 36102396
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Resource subtype / Literary indicator
- Conference, Non-conventional Literature
- Descriptors DEI
- BYPASSES; ECCS; NOZZLES; PWR TYPE REACTORS; SAFETY INJECTION; VELOCITY
- Descriptors DEC
- ENGINEERED SAFETY SYSTEMS; ENRICHED URANIUM REACTORS; POWER REACTORS; REACTOR PROTECTION SYSTEMS; REACTORS; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS
Optional Information
- Notes
- 2 refs, 7 figs, 1 tab