The Phebus and VERCORS data have played an important role in contemporary understanding and modeling of fission product release and transport from damaged LWR fuel. The data from these test programs have allowed improvement of MELCOR modeling of release and transport processes for both low enrichment uranium fuel as well as high burnup and MOX fuels. The following paper ...

The VERCORS experimental program was launched in order to study radionuclide release from standard PWR fuels and quantify the corresponding source term in severe-accident conditions. Performed by the CEA, it forms part of a larger program concerning reactor-accident studies funded by the IRSN in collaboration with ...

Because of the severe consequences, in terms of radiological and biological effects, of a nuclear accident, the international reactor safety authorities initiated, 25 years ago, numerous experimental programs in order to improve the understanding and the ...

... § 71.73 Hypothetical accident conditions. (a) Test procedures...Evaluation for hypothetical accident conditions is to be based... Tests for hypothetical accident conditions must be conducted...been assumed for criticality analysis, immersion under a head...

The Phebus and VERCORS data have played an important role in contemporary understanding and modeling of fission product release and transport from damaged light water reactor fuel. The data from these test programs have allowed improvement of MELCOR modeling of release and transport processes for both low enrichment uranium fuel as well as high burnup and mixed oxide (MOX) ...

...2010-10-01 false Reporting accidents. 195.50 Section 195.50...HAZARDOUS LIQUIDS BY PIPELINE Annual, Accident, and Safety-Related Condition Reporting § 195.50 Reporting accidents. An accident report is...

... from 1976 to 1981, examined the relationship between aviation accidents and static ... between certain visual conditions and aircraft accidents (19,20 ...

Appendix B.In-Flight Loss of Control Accidents in Part 121 and Scheduled ... The causal factors of accidents from the National Transportation Safety Board ...

A Five-step methodology has been developed to evaluate information needs for nuclear power plants under accident conditions and the availability of plant instrumentation during severe accidents. Step 1 examines the credible accidents and their relationships to plant safety functions. Step 2 determines the ...

A Five-step methodology has been developed to evaluate information needs for nuclear power plants under accident conditions and the availability of plant instrumentation during severe accidents. Step 1 examines the credible accidents and their relationships to plant safety functions. Step 2 determines the ...

...fissile materials packagings to withstand accident conditions in transportation. 173...fissile materials packagings to withstand accident conditions in transportation. Each...CFR part 71 for ability to withstand accident conditions in...

This document provides the technical basis for the frequency of a tank bump and for the radiological and toxicological consequences of a tank boiling accident and associated hazardous conditions.

The main phenomena leading to hydrogen generation in the containment of a PWR in accident conditions are described in this report. They are the following: water radiolysis, zirconium cladding oxidation and oxidation of the aluminium of internal structures...

An analysis of the frequency of four different types of rotorcraft accidents was conducted to determine if the number of fatalities and injuries between accident conditions was different. Accidents involving rollover, no rollover, fire, and no fire were s...

...false Telephonic notice of certain accidents. 195.52 Section 195.52 ...HAZARDOUS LIQUIDS BY PIPELINE Annual, Accident, and Safety-Related Condition Reporting...52 Telephonic notice of certain accidents. (a) At the earliest...

Technical Basis Document for the Nuclear Criticality Representative Accident and Associate Represented Hazardous Conditions. Revision 2 of RPP-12371 provides accident consequence estimates for a hypothetical criticality event in an above grade facility (e...

... National Park Factors that can contribute to visitor accidents Not relevant ...

... The identification of the true causes of hazardous failures and accidents of technical equipment is the necessary condition for developing and ...

Types of accidents and violations were compared for 1701 drivers with chronic medical conditions known to the California Department of Motor Vehicles and 921 drivers not known to have medical conditions. Drivers without medical conditions were found to be...

The systematics of the characteristics of twenty-one criticality accidents occurring in nuclear processing facilities of the Russian Federation, the United States, and the United Kingdom are examined. By systematics the authors mean the degree of consistency or agreement between the factual parameters reported for the accidents and the experimentally known ...

An overview of the analysis of core-disruptive accidents is given. These analyses are for the purpose of understanding and predicting fast reactor behavior in severe low probability accident conditions, to establish the consequences of such conditions and to provide a basis for evaluating consequence limiting ...

The U.S. Nuclear Regulatory Commission is conducting an accident management research program that emphasizes the use of severe accident research to enhance the ability of plant operating personnel to effectively manage severe accidents. Hence, it is necessary to ensure that the plant instrumentation and information systems adequately ...

This paper describes the technical approach used in the Modal Study performed by the Lawrence Livermore National Laboratory to evaluate the level of safety provided during the shipment of spent fuel from nuclear power reactors. The evaluation is performed by calculating the responses of representative spent fuel casks to severe highway and railway accidents and the ...

...CONTINUED) PIPELINE SAFETY TRANSPORTATION OF HAZARDOUS... Annual, Accident, and Safety-Related Condition Reporting...prescribes requirements for periodic reporting and for reporting of accidents and safety-related...

In this study, risk-significant pressurized-water reactor severe accident sequences are examined using MELCOR 1.8.5 to explore the range of fission product releases to the reactor containment building. Advances in the understanding of fission product release and transport behavior and severe accident progression are used to render best estimate analyses of ...

The analyses presented in this paper describe advanced methods of performing accident analyses by using finite element analysis. The models created to obtain solutions for these accident conditions are three-dimensional solid models which are solved in tr...

Haulage accidents comprise about 17 percent of all nonfatal coal-mine accidents; considering relatively small number of employees exposed to such accidents, haulage is most hazardous phase of coal-mine operation. Suggestions for improving conditions are given.

The publication contains briefs of selected railroad accidents occurring in U.S. Railroad operations. The brief format presents basic facts, conditions, circumstances, and probable cause(s) in each instance.

The Bureau of Mines manual is oriented to the technical needs of an investigation of fire or explosion accidents and includes various practical and theoretical information that is needed in analyzing accidents or evaluating conditions that might lead to a...

A report is presented on in depth investigation of motor vehicle fatalities. Factors to be investigated in motor vehicle accidents are: (1) The accident scene including road, weather and traffic conditions and speed of vehicle(s). (2) The nature of injuri...

...conditions, and circumstances and the cause or probable cause or causes of: all accidents involving civil aircraft, and certain public aircraft; highway accidents, including railroad grade-crossing accidents, the investigation of which...

...injuries, and property damage from traffic accidents. Most traffic accidents can be prevented. Investigation of motor vehicle accidents should examine all factors, operator status, vehicle condition, and supervisory control measures...

This report describes a study performed by the Lawrence Livermore National Laboratory to evaluate the level of safety provided under severe accident conditions during the shipment of spent fuel from nuclear power reactors. The evaluation is performed using data from real accident histories and using representative truck and rail cask ...

In support of the US Nuclear Regulatory Commission Accident Management Research Program, the availability of instruments to supply accident management information during a broad range of severe accidents is evaluated for a Boiling Water Reactor with a Mark I containment. Results from this evaluation include: (1) the identification of ...

This document analyzes aboveground tank failure accident scenarios for the Demonstration Bulk Vitrification system (DBVS). The radiological and toxicological consequences are determined for a range of aboveground tank failure accident scenarios to determine the representative accident for DBVS. Based on the consequence results and ...

The system response in a transportation accident environment is an element to be considered in an overall Transportation System Risk Assessment (TSRA) framework. The system response analysis uses the accident conditions and the subsequent accident progression analysis to develop the accident ...

The report consists of four parts. Part 1 estimates effects of campaigns on road accidents, fatal accidents and serious injury accidents by means of meta-analysis. Effect of campaigns in the campaign period is ca 9% reduction in the number of accidents (p...

Estimates of the potential airborne release of radioactive materials in transportation accidents are necessary to compare the safety in various shipping methods. To make such estimates, information is required on various aspects of the accident situation (physical and chemical characteristics of the source materials, forces/conditions ...

Available models for predicting failure of flawed and unflawed steam generator tubes under normal operating, accident, and severe accident conditions are reviewed. Tests conducted in the past, though limited, tended to show that the earlier flow-stress mo...

Previous studies of accident rates in different road surface conditions, based on accidents reported to the police, have made it possible to distinguish only between accident rates on a dry bare surface, wet/moist bare surface and icy/snowy road surface. ...

....................... 22 Figure 20. Numbers of total and fatal general aviation accidents in 2006 by weather condition. 23 fatal. Figure 20. Numbers of total and fatal general aviation accidents in 2006 by weather conditionAnnual Review of Aircraft Accident Data U.S. General Aviation, ...

Knowledge on processes of charcoal transportation is crucial for fire reconstruction based on sedimentary charcoal. Charcoal is susceptible to long-distance transport by water. A ... ...

The effect on accidents of the changes in light conditions in some hours at the beginning and end of British Summer Time has been studied. Darkness is assumed to be the period between the beginning and end of lighting-up time. On the day BST ends, a perio...

The report describes a study performed by the Lawrence Livermore National Laboratory to evaluate the level of safety provided under severe accident conditions during the shipment of spent fuel from nuclear power reactors. The evaluation is performed using...

The research effort consists of a multivariate statistical analysis of highway conditions and highway accident data. Its main goal is to provide a means through which transportation agencies can develop realistic highway safety improvement priorities. The...

The purpose of this study was to investigate statistical relationships between the major factors of rural highway conditions and the accident experience. The objective was to utilize multivariate statistical techniques including cluster, factor, discrimin...

Air cleaning system response to the stress of accident conditions are being investigated. A program overview and hghlight recent results of our investigation are presented. The program includes both analytical and experimental investigations. Computer cod...

This report is a first documentation of the KfK/PNS activities and plans to investigate the behaviour of steel containments under accident conditions. The investigations will deal with a free standing spherical containment shell built for the latest type ...

By the use of an American statistic of accidents on roads the risk of body burden is estimated resulting from the transport of radioactive wastes to the central collection, conditioning and storage facilities in Seibersdorf. It is shown that the risk of t...

Regulatory Guide 1.52 stipulates a radiation level for iodine buildup on the adsorber of 10 to the 9th power rads as one of the typical accident conditions for atmospheric clean up systems. The laboratory research in progress seeks to study the combined e...

Regulatory Guide 1.52 stipulates a radiation level for iodine buildup on the adsorber of 10 to the 9th power rads as one of the typical accident conditions for atmospheric clean up systems. The laboratory research in progress seeks to study the combined e...

A risk-based logic model is suggested as an appropriate basis for better predicting accident progression and ensuing source terms to the environment from process upset conditions in complex chemical process facilities. Under emergency conditions, decision...

Nov 19, 2009 ... Safer airplanes capable of avoiding conditions that lead to accidents and the ability to monitor the structure of buildings and bridges before ...

Design requirements and performance characteristics of fuel pins for LMFBR reactors under accident conditions are discussed.

were conducted to determine the occupant kinematics during the collision. The occupants were first simulated in the restraint condition similar to the accident scenario....

Aircraft accidents caused by equipment failure may some day be prevented with the Aircraft. Condition Analysis and Management System ...

Abstracts concerned with diseases or accidents and conditions requiring or amenable to operative procedures.

the continuation of the unstabilized approach, the dispatch of the flight into freezing drizzle conditions, the efficiency of the emergency response, and simulator-based...

... It is full of uncertainties like weather conditions, availability of people, accidents, etc. Completion of the project to meet budget cost, ...