Accident management is examined from several related perspectives. The emphasis is on the role of the operating crew and the technical support provided to them before, during, and after an accident. The relationship among accident management, risk managem...

Severe accident management can be defined as the use of existing and/or alternative resources, systems and actors to prevent or mitigate a core-melt accident. For each accident sequence and each combination of severe accident management strategies, there ...

The fundamental objective of the accident management program is to assure, in the event of a severe accident at a nuclear plant, that the effectiveness of personnel and equipment is maximized in preventing or mitigating the consequences of the accident. T...

Viewgraphs are presented that describe the Three Mile Island-2 reactor; the severe accident in the reactor; activity levels following the accident; and estimated costs associated with the accident.

As part of the Severe Accident Sequence Analysis (SASA) program of the Nuclear Regulatory Commission (NRC), threats to containment and ways in which operators can help preserve containment integrity during severe accidents are examined. Severe accidents a...

The management of severe accidents in light water reactors is receiving much attention in several countries. The reduction of risk by measures and/or actions that would affect the behavior of a severe accident is discussed. The research program that is be...

Boys are involved in more motor vehicle accidents than are girls. Nighttime accidents account for relatively few accidents. However, severity of accident is increased at dark. A different type of accident occurs when the bicycle is used as a toy or as a m...

Effective planning for the management of severe accidents at nuclear power plants can produce both a reduction in the frequency of such accidents as well as the ability to mitigate their consequences if and when they should occur. This report provides an ...

This report describes and discusses the containment accident progression and the important severe accident containment thermohydraulic phenomena. The overall objective of the report is to provide a rather detailed presentation of the present status of phe...

The study collected accident data that would allow determination of the relationships between occupant injury and accident severity. The measure of severity most commonly used to characterize an accident is the velocity change experienced by the passenger...

The management of severe accidents in light water reactors is receiving much attention in several countries. The reduction of risk by measures and/or actions that would affect the behavior of a severe accident is discussed. The research program that is being conducted by the US Nuclear ...

The report provides a comprehensive review of signal installations and their impacts on accident patterns, and accident frequency and severity. It contains information on accident statistics by type and severity, accident rates for stop controlled and sig...

The basis for securing nuclear safety is to prevent occurrence of accidents and to mitigate propagation of abnormal events or accidents to severe accidents. In practice, a nuclear power plant is designed and constructed so that abnormal events can be dete...

In support of the U.S. 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 M...

A study was conducted to (1) determine the frequency and severity of driver/vehicle design mismatch problem contribution to accidents and near accidents, (2) relate driver and vehicle characteristics to severity and frequency of problems experienced by dr...

The report describes a study of run-off-road, over embankment, and guardrail accidents together with their respective accident severities. Results indicate that guardrail for the protection of roadside development is not justified unless the accident pote...

In recent years several commercial aircraft accidents have occurred as an aircraft attempted landing

the gate chamber. The access shaft provides vertical access to the gates. Accident assessment. The evaluation of the nature, severity, and impact of an accident. Dam operating...

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 ...

Accident management is examined from several different perspectives. The emphasis is on the role of the operating crew and the technical support provided to them before, during, and after an accident. The relationship among accident management, risk management, and emergency management is examined. The roles played ...

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) ...

Severe accident natural circulation flows have been investigated at the Idaho National Engineering Laboratory to better understand these flows and their potential impacts on the progression of a pressurized water reactor severe accident. Parameters affect...

An important goal of the US DOE reactor development program is to conceptualize advanced safety design features for a demonstration Sodium Fast Reactor (SFR). The treatment of severe accidents is one of the key safety issues in the design approach for adv...

In support of the Nuclear Regulatory Commission's (NRC's) assessment of the risk from severe accidents at commercial nuclear power plants in the U.S. reported in NUREG-1150, the Severe Accident Risk Reduction Program (SARRP) has completed a revised calcul...

The Severe Accident Risk Reduction Program (SARRP) has completed a revised calculation of the risk to the general public from severe accidents at the Peach Bottom Atomic Power Station, Unit 2. The power plant, located in southeastern Pennsylvania, is oper...

The Severe Accident Risk Reduction Program (SARRP) has completed a revised calculation of the risk to the general public from severe accidents at the Peach Bottom Atomic Power Station, Unit 2. The power plant, located in southeastern Pennsylvania, is oper...

...costs and benefits of severe accident mitigation design alternatives...for not incorporating severe accident mitigation design alternatives...utilizing the reactor in a nuclear power plant, or an evaluation...amendment either renders a severe accident mitigation ...

This reports documents work performed the NRC/RES Accident Management Guidance Program to evaluate possible strategies for mitigating the consequences of PWR severe accidents. The selection and evaluation of strategies was limited to the in-vessel phase of the severe accident, i.e., after the ...

. Ergonomics specialist conducted ergonomics evaluations. Several recommendations were made to the employee # of Total Accidents # of OSHA Recordable Accidents # of Lost Time Accidents Accident Rate (Includes all accidents) OSHA Recordable Accident Rate ...

In this paper the authors describe the procedures and the organizations which are used in case of severe accident on a pressurized water reactor. (ERA citation 13:033624)

We had several accidents. As a matter of fact, we've lost more astronauts in airplane ... There were several accidents that happened, unfortunately, ...

This is a comparative study of the Design Basis Accident Approach in various national legal systems. There is no distinction in the Federal Republic of Germany between design basis accident and a so-called ''severe accident''; therefore the legal effects ...

The environmental consequences of an LMFBR accident involving breach of containment are so severe that such accidents must not be allowed to happen. Present methods for analyzing hypothetical core disruptive accidents like a loss of flow with failure to s...

This paper addresses the need for a management program for nuclear power accidents. According to the author, the tools and technology for severe accident management exist. The need for a clear, realistic definition of nuclear accident program requirements is discussed.

which are causal to the accidents. Technical risk analyses such as I outlined are complementary the interpretaion of the concepts \\accident", \\(accident) severity", \\hazard" and \\(hazard) latency". First, you have to say what you consider to be an accident. There are many de#12;nitions 1 ...

This survey looks at a sample of 450 injured motorcyclists involved in 425 accidents over a period of one year (1974). A comparison of several aspects of the accident situation between the sample and national accident data indicated that the detailed info...

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 ...

A combination approach of an expert system and neural networks is used to implement a prototype severe accident diagnostic system which would monitor the progression of the severe accident and provide necessary plant status information to assist the plant staff in accident management during the ...

Some of PWR severe accidents are initiated by loss of all AC power. In these cases, accident would proceed while the primary system pressure is still at high level. Thus it is proposed that an intentional depressurization of the primary system has a poten...

As part of the Severe Accident Risk Reduction Program, researchers at Sandia National Laboratories have constructed a group of containment event trees to be used in the analysis of key accident sequences for light water reactors (LWR) during postulated se...

A summary of the results of an investigation of the severities of highway and railroad accidents as they relate to the shipment of large radioactive materials casks is discussed. The accident environments considered are fire, impact, crash, immersion, and...

French studies have early considered the fact that, despite all the precautions taken, the possibility of severe accidents cannot be absolutely excluded; these accidents include core meltdown and a more or less significant loss, at an early or later stage...

The VICTORIA code is designed to be a module of the MELPROG severe accident analysis code. The VICTORIA code is designed to model the in-vessel phase of a severe reactor accident. The functions of VICTORIA in MELPROG are fission product release from fuel,...

This paper briefly describes the results of work carried out in support of the US Nuclear Regulatory Commission Accident Management Research Program to evaluate the effectiveness and feasibility of current and proposed strategies for BWR severe accident m...

The report describes a human factors research project performed to: (1) support the Severe Accident Sequence Analysis (SASA) program and (2) develop a descriptive model of operator response in accident management. The first goal was accomplished by workin...

After code damage during a severe accident in a nuclear reactor, the degraded core has to be cooled down and the decay heat should be removed in order to cease the accident progression and maintain a stable state. The cooling of core melt is divided into ...

As a part of the evaluation of accident management strategies for severe accident prevention or mitigation in a station blackout scenario for YGN 3 and 4, an external vessel cooling strategy for the prevention of reactor vessel failure has been estimated ...

Out-of-control vehicles on steep grades have the potential for and frequently do result in severe accidents. There are two truck escape ramps in Kentucky, and both were constructed as a result of severe accidents and the potential for additional accidents...

Since the TMI-2 accident, which occurred in 1979, necessity of understanding phenomena associated with a severe accident have been recognized and researches have been conducted in many countries. During a severe accident of a light water reactor, a debris...

The liberation of radioactive materials into various containment locations during a severe accident creates a radiation field that may have a significant impact on the accident progression. High radiation may not only impair the functioning of important e...

In Washington State, priority programming for evaluating accident prevention and mitigation (safety improvement) involves analysis of roadside features, but the effects that such features have on the frequency and severity of accidents is not well underst...

The results of risk analyses, research and particularly the two severe accidents in the nuclear power plants TMI-2 and Chernobyl let to a worldwide re-examination of all aspects dealing with the capability to cope with severe accidents. Strategies have be...

Several different factors contribute to injury severity in traffic accidents, such as driver characteristics, highway characteristics, vehicle characteristics, accidents characteristics, and atmospheric factors. This paper shows the possibility of using Bayesian Networks (BNs) to classify traffic ...

Accident severity categories are used in many risk analyses for the classification and treatment of accidents involving vehicles transporting radioactive materials. Any number or definition of severity categories may be used in an analysis. A methodology which allow accident probabilities ...

Accident severity categories are used in many risk analyses for the classification and treatment of accidents involving vehicles transporting radioactive materials. Any number or definition of severity categories may be used in an analysis. A methodology which allow accident probabilities ...

Prior to the accident at Three Mile Island, little attention was given to the development of procedures for the management of severe accidents, that is, accidents in which the reactor core is damaged. Since TMI, however, significant effort has been devoted to developing strategies for severe ...

Several days following the Columbia accident a team formed and began planning for the reconstruction

This study quantitatively describes the severities of the environments that small hazardous-material containers can be expected to experience in transportation accidents. These descriptions, which constitute an important component of the risk analysis of ...

Contents: Materials and methods; Factors in accident frequency or severity; Analysis of pedestrian injuries.