آموزش کد هسته ای راسکال(rascal)-کد تجزیه و تحلیل پیامد های رادیولوژیکی
کد RASCAL ابزاری است که توسط تیم اندازه گیری های محافظ در مرکز عملیات کمیسیون تنظیم هسته ای ایالات متحده (NRC) برای ساخت پیش بینی های دوز و نتیجه مستقل در حین حوادث رادیولوژی و شرایط اضطراری استفاده می شود. RASCAL بیش از 25 سال پیش توسط NRC ساخته شده است تا ابزاری برای ارزیابی سریع یک حادثه یا تصادف در یک مرکز دارای مجوز NRC و تصمیم گیری در مورد کمک هایی مانند اینکه آیا مردم باید تخلیه شوند یا پناهگاه خود در محل باشند ، تهیه شود. RASCAL رهاسازی جوی از نیروگاههای هسته ای ، استخرهای ذخیره شده و مخازن سوخت ، امکانات چرخه سوخت و امکانات انتقال مواد رادیواکتیو را ارزیابی می کند. داده های آن تنها معیاری است که مقامات محلی در حین تصادف مورد استفاده قرار نمی دهند ، اما مطمئناً یک مورد مهم است.
The RASCAL code is a tool used by the Protective Measures Team in the U.S. Nuclear Regulatory Commission's (NRC's) Operations Center for making independent dose and consequence projections during radiological incidents and emergencies. RASCAL was developed by NRC over 25 years ago to provide a tool for the rapid assessment of an incident or accident at an NRC-licensed facility and aid decision-making such as whether the public should evacuate or shelter in place. RASCAL evaluates atmospheric releases from nuclear power plants, spent fuel storage pools and casks, fuel cycle facilities, and radioactive material handling facilities. Its data is not the only criterion used by the local authorities during an accident, but certainly an important one.
Additional information on RASCAL can be viewed in the video Introduction to RASCAL.
RASCAL has been continually upgraded and improved upon to include updated source term models, atmospheric transport models, nuclear power plant site-specific data and updated computer calculation methods.
RASCAL version 4.3.3, which was released in September 2017, is an update that resolves coding issues identified by user feedback. Specifically, the update resolves RASCAL 4.3.2 coding issues with the STDose module involving the containment pressure-hole size model, the SGTR model, the effluent rates and effluent concentration models and the uranium oxide in a fire source term model. Additionally, this release updated the MetFetch Tool’s functionality by including the ability to retrieve and process meteorological data (observations and forecasts) from international meteorological stations (METAR).
RASCAL version 4.3.2, which was released in July 2016, is an update to RASCAL 4.3.1 that resolves coding issues identified by user feedback. Specifically, the update resolves RASCAL 4.3.1 coding issues with the UF6 and coolant release source terms for various fuel cycle and nuclear power plant scenarios. Additionally, this update resolved issues with the MetFetch Tool’s ability to retrieve and process meteorological data (observations and forecasts) due to changes in the security settings of new servers at the NWS.
RASCAL version 4.3.1, which was released in December 2014, is an update to RASCAL v4.3 that resolves coding issues identified by user feedback. Specifically, the update resolves RASCAL v4.3 coding issues with the generation of source terms for various nuclear power plant scenarios. Additionally, clarifying information was incorporated into the Spent Fuel Pool STDose module, Source-Term Import, Export and Merge Functions, and Meteorological Data Handling modules to assist the user with these RASCAL 4.3 functions.
RASCAL version 4.3, which was issued in September 2013, incorporated the NRC Near Term Task Force's lessons learned on the Fukushima Daiichi nuclear power plant accident in Japan. Some of these include updates to the atmospheric transport, dispersion and dose calculation (ATD) model to increase the RASCAL 4.3 domain from a 50 mile radius to a 100 mile radius, changes to the Source Term to Dose (STDose) models to include the option for long term station blackout (LTSBO) and 96 hour duration for the accident and the addition of Source Term Merge/Export option which allows users to assess the consequences from a multi-reactor event.
RASCAL version 4.2, which was issued in October 31, 2011, provided for large and small updates and fixes to the RASCAL 4.0 code. Some of these include updates to the dose conversion factors (DCFs), Source Term to Dose (STDose) models and the Field Measurement to Dose (FMDose) models and the addition of approved facility power-uprates to the facility database.
