Published December 2020 | Version v1
Journal article Metadata-only

Research on diagnosis method of core melt relocation under IVR condition

Creators

  • 1. Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu (China)
  • 2. Fujian Fuqing Nuclear Power Co., Ltd., Fuqing (China)

Description

Base on the dedicated detection instrument of HPR1000 IVR system, the feasibility and detailed method of core melt relocation status diagnosis are studied in the present work. Severe accident scenario analysis of large LOCA, SBO and etc. are performed, which indicated a obvious increasing of RPV outer surface temperature occurs when core melt relocated to lower head, and the temperature increasing amplitude could achieve 150℃ to 200℃. The diagnosis criteria for core melt relocation status are proposed based on the results. Under IVR condition, when the RPV outer surface temperature obviously increases, the core melt relocation status can be confirmed. (authors)

Additional details

Identifiers

DOI
10.13832/j.jnpe.2020.S2.0001;

Publishing Information

Journal Title
Nuclear Power Engineering
Journal Volume
41
Journal Issue
S2
Journal Page Range
p. 1-4
ISSN
0258-0926

INIS

Country of Publication
China
Country of Input or Organization
China
INIS RN
55086595
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
DIAGNOSIS; IN-VESSEL RETENTION; LBLOCA; PWR TYPE REACTORS; STATION BLACKOUT
Descriptors DEC
ACCIDENTS; ENRICHED URANIUM REACTORS; LOSS OF COOLANT; POWER REACTORS; REACTOR ACCIDENTS; REACTORS; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Notes
6 figs., 2 refs.; http://dx.doi.org/10.13832/j.jnpe.2020.S2.0001