• Title/Summary/Keyword: hypothetical accident conditions

Search Result 26, Processing Time 0.018 seconds

Criticality Analyses of Spent Fuel Shipping Cask (핵연료(核燃料) 수송용기(輸送容器)에 대(對)한 핵림계분석(核臨界分析))

  • Min, Duck-Kee;Ro, Seung-Gy;Kwack, Eun-Ho
    • Journal of Radiation Protection and Research
    • /
    • v.9 no.2
    • /
    • pp.97-102
    • /
    • 1984
  • Criticality analyses of the KSC-1(Korean Shipping Cask-1) spent fuel shipping cask have been performed with the help of KENO-IV Monte Carlo computer code and 19-group CSLIB 19 cross section set which was generated from AMPX modular system. The analyses followed a benchmark calculation which has been made regard to the B & W CX-10 criticality facility in order to validate the Monte Carlo code cross section set described above. The KSC-1 shipping cask seems to be safe in the criticality point of view for the transport of one PWR spent fuel assembly under the normal conditions as well as the hypothetical accident conditions.

  • PDF

A Verification of Tip-over Analysis of a Dry Concrete Storage Cask under The Accident Conditions by a Test for the 1/3 Scale Model (사고조건하의 건식저장용기 전복해석검증을 위한 1/3 축소모델의 시험)

  • Kim Dong-Hak;Seo Ki-seog;Lee Ju-Chan;Jung Ki-Jung;Cho Chun-Hyung;Choi Byung-Il;Lee Heung-Young
    • Proceedings of the Korean Radioactive Waste Society Conference
    • /
    • 2005.11a
    • /
    • pp.237-246
    • /
    • 2005
  • A tip-over test of the 1/3 scale model is conducted to verify the tip-oner analysis of a dry concrete storage cask under a hypothetical accident condition. The tip-oner analysis is executed using the velocity at each point which are determined from the initial angular velocity as the initial conditions of the model just before the impact. To confirm the structural integrity of the canister of a dry concrete storage cask, the non-detective testing such as Liquid Penetrants testing and Ultrasonic Testing are conducted. The strains and tile accelerations acquired by the tip-over test are compared with those by the analysis to verify the tip-over analysis. The lid of a storage calk are plastically deformed at the impact point. Liquid

  • PDF

The Test for Verifying a Tip-Over Analysis of a Dry Storage Cask (건식저장용기에 대한 전복해석의 검증시험)

  • Kim Dong-Hak;Seo Ki-Seog;Lee Ju-Chan;Cho Chun-Hyung;Jang Hyun-Kee;Choi Byung-Il
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
    • /
    • v.4 no.3
    • /
    • pp.245-253
    • /
    • 2006
  • A test of the 1/3 scale model was conducted to verify the tip-over analysis of a dry. concrete storage cask under a hypothetical accident condition. The tip-over analysis was executed using the velocity at each point as the initial conditions of the model just before the impact. The initial velocity was determined from the initial angular velocity, which would make the equivalent kinetic energy to the potential energy. To confirm the structural integrity of the canister, the visual testing and the non-detective testings such as Liquid Penetrant testing and Ultrasonic Testing were conducted. The lid of a storage cask was plastically deformed near the impact point. The structural integrity of storage cask was maintained. To verify the tip-over analysis the strains and the accelerations acquired by the tip-over test were compared with those by the analyses. The results of the analysis were larger than the test results about two times.

  • PDF

Radiation Shielding Analysis of CANDU Spent Fuel Transport Cask (CANDU 사용후핵연료 수송용기 방사선차폐 영향평가)

  • Choi, Jong-Rak;Yoon, Jung-Hyun;Kang, Hee-Young;Lee, Heung-Young;Chung, Sung-Whan
    • Journal of Radiation Protection and Research
    • /
    • v.18 no.2
    • /
    • pp.27-35
    • /
    • 1993
  • A shielding analysis of the shipping cask for transporting the CANDU spent fuel bundles has been studied. Radiation source term has been calculated on spent fuel with burn-up of 7,800 MWD/MTU and 5 years cooling time by ORIGEN2 code. The shielding calculation for the cask capable of transporting 378 bundles of CANDU spent fuel has been made by use of 1-D ANISN and 2-D DOT 4.2 codes. As a result of analysis, the optimum shield thickness of cask was obtained. And it is proved that the safety in radiation shielding under normal transport and hypothetical accident conditions is confirmed to satisfy the allowable values specified in IAEA Safety Series No. 6 and the Korean Atomic Law.

  • PDF

A Methodology for Determining the Optimal Durations of the Use of Contaminated Crops As Feedstuffs of Cattle Following a Nuclear Accident (원자력 사고후 가축 사료로서 오염 농작물 이용에 대한 최적기간 결정 방법론)

  • Hwang, Won-Tae;Han, Moon-Hee;Choi, Yong-Ho;Cho, Gyu-Seong
    • Journal of Radiation Protection and Research
    • /
    • v.24 no.2
    • /
    • pp.65-72
    • /
    • 1999
  • A methodology for determining the optimal durations of the use of contaminated crops as feedstuffs of cattle was designed based on the cost-benefit analysis method. The results of application for pigs, an omnivorous cattle, were discussed for the hypothetical deposition of radionuclides on August 15 when a number of crops are fully developed in Korean agricultural conditions. For investigating the relative cost-effectiveness of the use of contaminated crops as feedstuffs, the net benefit was compared with the case of the direct disposal of contaminated crops. The time-dependent radionuclide concentration in crops after the deposition was predicted using a dynamic food chain model DYNACON. The net benefit from the actions was quantitatively evaluated in terms of cost equivalent of doses and monetary costs of implementing the action. It depended on a number of factors such as radionuclides, variety of crops supplied as feedstuffs and duration of the actions. The use of contaminated crops as feedstuffs was more cost effective for $^{90}Sr\;or\;^{131}I$ deposition than for $^{137}Cs$ deposition.

  • PDF

Influence of identifiable victim effect on third-party's punishment and compensation judgments (인식 가능한 피해자 효과가 제3자의 처벌 및 보상 판단에 미치는 영향)

  • Choi, InBeom;Kim, ShinWoo;Li, Hyung-Chul O.
    • Korean Journal of Forensic Psychology
    • /
    • v.11 no.2
    • /
    • pp.135-153
    • /
    • 2020
  • Identifiable victim effect refers to the tendency of greater sympathy and helping behavior to identifiable victims than to abstract, unidentifiable ones. This research tested whether this tendency also affects third-party's punishment and compensation judgments in jury context for public's legal judgments. In addition, through the Identifiable victim effect in such legal judgment, we intended to explain the effect of 'the bill named for victim', putting the victim's real name and identity at the forefront, which is aimed at strengthening the punishment of related crimes by gaining public attention and support. To do so, we conducted experiments with hypothetical traffic accident scenarios that controlled legal components while manipulating victim's identifying information. In experiment 1, each participant read a scenario of an anonymous victim (unidentifiable condition) or a nonanonymous victim that included personal information such as name and age (identifiable condition) and made judgments on the degree of punishment and compensation. The results showed no effect of identifiability on third-party's punishment and compensation judgments, but moderation effect of BJW was obtained in the identifiable condition. That is, those with higher BJW showed greater tendency of punishment and compensation for identifiable victims. In Experiment 2, we compared an anonymous victim (unidentifiable condition) against a well-conducted victim (positive condition) and ill-conducted victim (negative condition) to test the effects of victim's characteristics on punishment for offender and compensation for victims. The results showed lower compensation for an ill-conducted victim than for an anonymous one. In addition, across all conditions except for negative condition, participants made punishment and compensation judgments higher than the average judicial precedents of 10-point presented in the rating scale. This research showed that victim's characteristics other than legal components affects third-party's legal decision making. Furthermore, we interpreted third-party's tendency to impose higher punishment and compensation with effect of 'the bill named for victim' and proposed social and legal discussion for and future research.

  • PDF