Published December 2017 | Version v1
Journal article Metadata-only

Sensitivity analysis for passive residual heat removal system of AP1000 based on grey correlation degree

Creators

  • 1. Beijing Passive Technology Key Laboratory, Beijing (China)
  • 2. School of Nuclear science and Engineering, North China Electric Power University, Beijing (China)
  • 3. Science and Technology on Reactor System Design Technology Laboratory, NPIC, Chengdu (China)

Description

To analyze the behavior of passive residual heat removal system (PRHRS) of AP1000 under loss of main feedwater accident, a thermal hydraulic model is built by RELAP5. Based on the results of RELAP5, the grey correlation degree is used to analyze the importance degree of influence factors. The results show that when the resolution is 0.1, the influence factors of reactor coolant outlet and fuel cladding maximum temperature can be well distinguished. Reactor coolant outlet maximum temperature directly affects the fuel cladding maximum temperature. The correlation coefficient between them is great. The initial reactor power has greatest effect on the reactor coolant outlet maximum temperature and the fuel cladding maximum temperature. And the sequences of influence factors are temperature of IRWST, height of ascending pipe and initial pressure. Correspondingly, the diameter and resistance coefficient of PRHRS-HX have less effect. (authors)

Additional details

Publishing Information

Journal Title
Nuclear Power Engineering
Journal Volume
38
Journal Issue
6
Journal Page Range
p. 107-112
ISSN
0258-0926

INIS

Country of Publication
China
Country of Input or Organization
China
INIS RN
52062187
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
ACCIDENTS; AFTER-HEAT REMOVAL; CLADDING; COOLANTS; CORRELATIONS; FEEDWATER; FUELS; HEIGHT; LOSSES; PIPES; PWR TYPE REACTORS; RESOLUTION; RHR SYSTEMS; SENSITIVITY ANALYSIS; THERMAL HYDRAULICS
Descriptors DEC
COOLING SYSTEMS; DEPOSITION; DIMENSIONS; ENERGY SYSTEMS; ENRICHED URANIUM REACTORS; FLUID MECHANICS; HYDRAULICS; HYDROGEN COMPOUNDS; MECHANICS; OXYGEN COMPOUNDS; POWER REACTORS; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTORS; REMOVAL; SURFACE COATING; THERMAL REACTORS; TUBES; WATER; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Notes
4 figs., 3 tabs., 16 refs.