Published 2017 | Version v1
Miscellaneous Metadata-only

Sensitivity studies for the station blackout accident with crash-cooldown at a generic 900MW CANDU reactor

Creators

  • 1. McMaster Univ., Hamilton, ON (Canada)
  • 2. Canadian Nuclear Safety Commission, Ottawa, ON (Canada)

Description

In the early stage of a Station Blackout (SBO) in a CANDU reactor the operators will initiate crash-cooldown by opening the main steam safety valves (MSSVs) to depressurize the secondary side and allow water supply to the steam generators (SGs) thereby extending natural circulation on the primary side. This work examines the effectiveness of SGs heat removal after crash-cooldown and that of several water make-up options for a generic 900MW CANDU using RELAP5/MOD3.3. Several cases on SBO sequence with/without crash-cooldown and with different water make-up options are simulated. The sensitivities to various parameters such as the nodalization/grouping of fuel channels/Utubes,Counter Current Flow Limitation (CCFL) correlations, the timings of crash-cooldown and pressurizer isolation are investigated. (author)

Part of:
Our nuclear future: renewal and responsibility. 37th Annual CNS conference and 41st CNS/CNA student conference

Additional details

Publishing Information

Publisher
Canadian Nuclear Society
Imprint Place
Toronto, Ontario (Canada)
ISBN
978-1-926773-24-7
Imprint Title
Our nuclear future: renewal and responsibility. 37th Annual CNS conference and 41st CNS/CNA student conference
Imprint Pagination
408 Megabytes
Journal Page Range
[15 p.]

Conference

Title
37. annual Canadian Nuclear Society conference; 41. CNS/CNA student conference
Dates
4-7 Jun 2017
Place
Niagara Falls, Ontario (Canada)

INIS

Country of Publication
Canada
Country of Input or Organization
Canada
INIS RN
50008976
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Conference, Non-conventional Literature
Descriptors DEI
CANDU TYPE REACTORS; COMPUTERIZED SIMULATION; HEAT TRANSFER; NATURAL CONVECTION; STATION BLACKOUT; STEAM GENERATORS
Descriptors DEC
ACCIDENTS; BOILERS; CONVECTION; ENERGY TRANSFER; HEAT TRANSFER; HEAVY WATER MODERATED REACTORS; MASS TRANSFER; POWER REACTORS; PRESSURE TUBE REACTORS; REACTOR ACCIDENTS; REACTORS; SIMULATION; THERMAL REACTORS; VAPOR GENERATORS

Optional Information

Notes
8 refs., 9 tabs., 15 figs.