Fault tree analysis

1. Introduction The healthcare delivery quality and patient safety improvement are prominence issues in healthcare systems. Delivery of healthcare depends on implicated procedure and interaction between patient, providers, organization and technology[1] which all of them may be causes of medical error or faults in a system. This condition, most of the time accompanies with uncertainties making the healthcare a high-risk system and it is confirmed by some information such as the annual death from medical error was 48000-98000 in 1999 and medical error is the third most common cause of death in the US in 2013 according to the report of Institute of Medicine(IOM) and statistical report of Central for Disease Control (CDC), respectively [2],[3].…

Experts predicted a huge earthquake that will have a massive destruction in the Pacific Northwest. Experts did not state when will it hit and how long it will last. However, according to Oregon State professor the magnitude will be between 8.0 and 9.2. Whether or not the earthquake is going to hit sooner or later and how powerful it is going to be. Being prepared could save a lot of lives and could avoid inevitable damages. But the big question is: are Northwesterners prepared when the…

Have you ever seen the movement of a whip? When it is cracked it starts with small ripples at base and magnifies as the waves move towards the end. Now someone may be puzzled how in the earth that can be linked towards supply chain. The analogy is quite simple, although the consequences can be quite complex and adverse. Let’s start with an example, suppose just at the beginning of the winter season customers buy 2 moisturizer creams for the season. If there is an offer on the table,…

The Alaskan way Viaduct will collapse if an earthquake happens, but that earthquake will take many steps. These steps will got through the layers of the earth. The layers are stacked on top of eachother, like the liquids in the “Density Column lab”. The layers are inner core, outer core, mesosphere, asthenosphere, and lithosphere(upper rigid mantle, continental crust, and oceanic crust). The earth's compositional layers are inner core, outer core, mantle, and crust. The inner core radiates…

Case Analysis 1. What are the facts in the case? John is the chief seismologist at one of the leading research facilities in North America who holds a P.H.D from one of the most prestigious university in the country. John has developed a method for predicting earthquake with 80% accuracy rate. From his investigation, he discovered that there is a 80% chance that an earthquake will occur with a magnitude of 7.3 in one of the four fault lines in southern california within two days. While three…

magnitude 8.8 earthquake which released 500 times more energy than Haiti’s, rattled Chile but only causes 525 people to die. When seeking the answers to the huge differences, scientists discovered that geological differences as well as social factors both helped to minimize death toll and infrastructure failures. Geological Aspects There are three aspects included in geological aspects: tectonic settings, the location of the epicenter and ground shaking intensity. Tectonic settings define the…

Risk analysis is an important element of risk management process which is been introduced in the organizations on frequent basis to have a depth analysis of risks associated with petrochemical industry or some other process industries (Tularam & Attili 2012). Risk analysis is an important aspect and have a great significance in analysis of identified risk events during risk identification or hazard identification phase of risk management. Risk analysis enables the evaluation of an identified…

The Owens Valley is a structural trough that has been dropped down as a graben along regional scale normal faults that separate it structurally from the Sierra Nevada Mountains to the west, and the White Mountains to the east (Pakiser, et al. 1964). Measured at 121 km north to south and it encompasses roughly 1400 square kilometers, the Owens Valley includes such features as hot springs, the basal Bishop Tuff from the Long Valley Caldera eruption which occurred approximately 750,000 years ago…

Achenbach gives details about an earthquake that had happened in the past and it was really bad. The name of the fault of the type of earthquake movement was The Hayward Fault. A long and lethal crack in the earth, slices along the base of the Berkeley Hills and directly through the University of California. Now… Joel Achenbach quotes that “ We understood earthquakes better than we did a century ago, when San Francisco was flattened. Now we would like to predict them.” Which i know that it can't…

2010 Haitian Earthquake ○ Where and how: The infamous 2010 earthquake occurred 25km from Port-au-Prince, Haiti’s capital. This region was the most densely populated area of the country, which increased the impact of this event significantly. The earthquake struck at 4:53pm local time on the 12th of January, with a depth of around 13km. This relatively shallow depth meant that most of the energy of the earthquake was released close to the surface, resulting in a devastating catastrophe. The event…