Tests AB5, AB6 and AB7 of the ABCOVE program simulate the dry aerosol conditions during a hypothetical severe accident in an LMFBR.
TESTVIEW RICHLAND 2 ORG SIGN IN CODE
The MELCOR computer code has been used to model four of the large-scale aerosol behavior experiments conducted in the Containment System Test Facility (CSTF) vessel. Detailed test results are presented and compared with the code predictions for eight key aerosol behavior parameters. Two of the codes (QUICKM and CONTAIN) were discrete, multiple species codes, while three (HAA-3, HAA-4, and HAARM-3) were log-normal codes which assume uniform coagglomeration of different aerosol species. Four organizations made pretest predictions of aerosol more » behavior using five computer codes.
The test conditions involved the release of a simulated fission product aerosol, NaI, into the containment atmosphere after the end of a small sodium pool fire. The third large-scale test in the ABCOVE program, AB7, was performed in the 850-m/sup 3/ CSTF vessel with a two-species test aerosol. The ABCOVE program is a cooperative effort between the USDOE, the USNRC, and their contractor organizations currently involved in aerosol code development, testing or application. « lessĪ program for aerosol behavior validation and evaluation (ABCOVE) has been developed in accordance with the LMFBR Safety Program Plan. Pretest computer code predictions were made by seven organizations using eight computer codes (HAA-3, HAA-4, HAARM-3, SOFIA, QUICK, QUICKM, MAEROS, and CONTAIN). In the second test, the experimental conditions simulated an accident environment in which a fission product aerosol, NaI, was released in the presence of a sodium fire. In the first test, more » a single-species aerosol was used, with the aerosol being generated by spraying sodium at a high rate into an air atmosphere. Two ABCOVE tests have been performed in the CSTF to date. The program involves pretest calculations by code developers and users, large-scale confirmatory tests in the 850-m/sup 3/ containment vessel of the Containment Systems Test Facility (CSTF), and blind post-test analyses and comparisons with experimental data. Purpose of the ABCOVE program is to provide a basis for judging the adequacy of existing aerosol behavior computer codes to describe inherent aerosol behavior in containment buildings during postulated breeder reactor accidents. « lessĪ program for aerosol behavior code validation and evaluation (ABCOVE) is in progress in the United States. Detailed test results are presented and compared with the code predictions for seven key aerosol behavior parameters. more » Three of the codes (QUICKM, MAEROS and CONTAIN) were discrete, multiple species codes, while four (HAA-3, HAA-4, HAARM-3 and SOFIA) were log-normal codes which assume uniform coagglomeration of different aerosol species. Five organizations made pretest predictions of aerosol behavior using seven computer codes. The test conditions simulated the release of a fission product aerosol, NaI, in the presence of a sodium spray fire. The second large-scale test in the ABCOVE program, AB6, was performed in the 850-m/sup 3/ CSTF vessel with a two-species test aerosol. = ,Ī program for aerosol behavior code validation and evaluation (ABCOVE) has been developed in accordance with the LMFBR Safety Program Plan.