安全工程专业文献翻译(8页).doc
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1、-安全工程专业文献翻译-第 8 页Accident InvestigationsAlthough accident investigation is an after-the-fact approach to hazard identification, it is still an important part of this process. At times hazards exist, which no one seems to recognize until they result in an accident or incident. In complicated accident
2、s it may take an investigation to actually determine what the cause of the accident was. This is especially true in cases where death results and few or no witnesses exist. An accident investigation is a fact-finding process and not a fault-finding process with the purpose of affixing blame. The end
3、 of any result of an accident investigation should be to assure that the type of hazard or accident does not exist or occur in the future.Your company should have a formalized accident investigation procedure, which is followed by everyone. It should be spelled out in writing and end with a written
4、report using as a foundation of your standard company accident investigation form. It may be your workers compensation form or an equivalent from your insurance carrier.Accidents and even near misses should be investigated by your company if you are intent on identifying and preventing hazards in yo
5、ur workplace. Thousands of accidents occur throughout the United States every day. The failure of people, equipment, supplies, or surroundings to behave or react as expected causes most of the accidents. Accident investigations determine how and why these failures occur. By using the information gai
6、ned through an investigation, a similar or perhaps more disastrous accident may be prevented. Accident investigations should be conducted with accident prevention in mind. Investigations are not to place blame.An accident is any unplanned event that results in personal injury or in property damage.
7、When the personal injury requires little or no treatment,it is minor. If it results in a fatality or in a permanent total, permanent partial, or temporary total (lost time) disability, it is serious. Similarly, property damage may be minor or serious. Investigate all accident regardless of the exten
8、t of injury or damage. Accidents are part of a broad group of events that adversely affect the completion of a task. These events are incidents. For simplicity, the procedures discussed in later sections refer only to accidents. They are, however, also applicable to incidents.1. Accident PreventionA
9、ccidents are usually complex. An accident may have 10 or more events that can be causes. A detailed analysis of an accident will normally reveal three cause levels:basic,indirect,and direct. At the lowest level, an accident results only when a person or object receives an amount of energy or hazardo
10、us material that cannot be absorbed safely. This energy or hazardous material is the DIRECT CAUSE of the accident. The direct cause is usually the result of one or more unsafe acts or unsafe conditions, or both. Unsafe acts and conditions are the indirect causes or symptoms. In turn, indirect causes
11、 are usually traceable to poor management policies and decisions, or to personal or environmental factors. These are the basic cause.In spite of their complexity, most accidents are preventable by eliminating one or more causes. Accident investigations determine not only what happened, but also how
12、and why. The information gained from these investigations can prevent recurrence of similar or perhaps more disastrous accident. Accident investigations are interested in each event as well as in the sequence of events that led to an accident. The accident type is also important to the investigator.
13、 The recurrence of accident of a particular type or those with common causes shows areas needing special accident prevention emphasis.2. Investigative ProceduresThe actual procedures used in a particular investigation depend on the nature and results of the accident. The agency having jurisdiction o
14、ver the lacation determines the administrative procedures. In general, responsible officials will appoint an individual to be in charge of the investigation. An accident investigation should use most of the following steps:Defined the scope of the investigation.Select the investigation. Assign speci
15、fic tasks to each (preferably in writing).Present a preliminary briefing to the investigating team.Visit and inspect the accident site to get updated information.Interview each victim and witness. Also interview those who were present before the accident and those who arrived at the site shortly aft
16、er the accident. Keep accurate records of each interview. Use a tape recorder if desired and if approved.Determine the following:What was not normal before the accident.Where the abnormality occurred.When it was first noted.How it occurred.Determine the following:Why the accident occurred.A likely s
17、equence of events and probable causes ( direct, indirect, basic ).Alternative sequences.Determine the most likely sequence of events and the most probable causes.Conduct a post-investigation briefing.Prepare a summary report including the recommended actions to prevent a recurrence. Distribute the r
18、eport according to applicable instructions.An investigation is not complete until all data are analyzed and a final report is completed. In practice, the investigation work, data analyzed and report preparations proceed simultaneously over much of the time spent on the investigation.3. Fact-FindingI
19、nvestigator collects evidence from many sources during an investigation, gets information from witnesses and observation as well as by reports, interviews witnesses as soon as possible after an accident, inspects the accident site before any changes occur, takes photographs and makes sketches of the
20、 accident scene, records all pertinent data on maps, and gets copies of all reports. Documents containing normal operating procedures flow diagrams, maintenance charts or reports of difficulties or abnormalities are particularly useful. Keep complete and accurate notes in a bound notebook. Record pr
21、e-accident conditions, the accident sequence and post-accident conditions. In addition, document the location of victims, witnesses, machinery, energy source, and hazardous materials.In some investigation, a particular physical or chemical law, principle, or property may explain a sequence of events
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