نتایج جستجو برای: chemical process safety
تعداد نتایج: 1865805 فیلتر نتایج به سال:
in this thesis, a better reaction conditions for the synthesis of spirobarbiturates catalyzed by task-specific ionic liquid (2-hydroxy-n-(2-hydroxyethyl)-n,n-dimethylethanaminium formate), calcium hypochlorite ca(ocl)2 or n-bromosuccinimide (nbs) in the presence of water at room temperature by ultrasonic technique is provided. the design and synthesis of spirocycles is a challenging task becaus...
Inherent safety (IS) has been recognized as a design approach useful to remove or reduce hazards at the source instead of controlling them with add-on protective barriers (as in the case of extrinsic safety). However, inherent safety is based on qualitative principles that cannot easily be evaluated and analyzed, and this is one of the major difficulties for the systematic application and quant...
This paper presents a process for the refinement of safety-critical source code into a more tractable representation. For large software-intensive information systems, the safety engineering view of the system reveals a “long thin slice” of hazard-related software involving a number of different software components. The hazard-related software is documented in the system “safety verification ca...
This presentation will review a few public perceptions of safety in chemical plants and refineries, and will compare these plant workplace risks to some of the more traditional occupations. The central theme of this paper is to provide a "within-the-fence" view of many of the process safety practices that world class plants perform to pro-actively protect people, property, profits as well as th...
The main challenge for any insurer/reinsurer has proved to be underwriting major refinery/Petrochemical risk. Insurers have already considered process risk management measures while accepting and evaluating the risks all over the world. Erstwhile petrochemical tariff was adopting experiencing methodology as basis for premium calculation in Iran. In the present de-tariff scenario decisions will ...
Alcohol in Iran is produced mainly from molasses of sugar cane and sugar beet. Other sources of alcohol production like wheat and barley exist, but because of some cultural and political reasons, they cannot be legally used for producing alcohol in Iran. Twenty-six manufacturers in 18 provinces are officially active. The actual capacity of ethanol production with medical purity is about 100mill...
In response to 9/11 and the increasing concerns over chemical sector security, Congress gave the Department of Homeland Security (DHS) the authority to regulate the safety and security of U.S. chemical facilities. In April of 2007, DHS passed the interim final rule called the Chemical Facility Anti-Terrorism Standards (CFATS) in order to secure the U.S. chemical infrastructure. Unfortunately, t...
introduction: global patient safety is the concern of all areas of the health care. in addition to the human suffering in those inflicted unsafe care and services, it has a heavy economic cost. due to the sensitive patient safety in the operation rooms, the present study aimed to assess patient safety in the operating rooms. methods: this was a descriptive cross-sectional study that was conduct...
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