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The San Bruno pipeline explosion occurred at 6:11 pm PDT on September 9, 2010, in San Bruno, California, when a 30-inch (76 cm) diameter steel natural gas pipeline owned by Pacific Gas & Electric exploded into flames in the Crestmoor residential neighborhood 2 miles (3.2 km) west of San Francisco International Airport [4] near Skyline Boulevard and San Bruno Avenue. [5]
For NS2, the pipes have an outer diameter of approximately 1,200 millimetres (48 inches) and a steel wall thickness of 27–41 millimetres (1.1–1.6 in) – thickest at the pipe ingress where operating pressure is 22 megapascals (220 bar) and thinnest at the pipe egress where operating pressure is 17.7 megapascals (177 bar), when transporting gas.
A gas leak refers to a leak of natural gas or another gaseous product from a pipeline or other containment into any area where the gas should not be present. Gas leaks can be hazardous to health as well as the environment. Even a small leak into a building or other confined space may gradually build up an explosive or lethal gas concentration. [1]
The writing of an expository essay often consists of the following steps: organizing thoughts (brainstorming), researching a topic, developing a thesis statement, writing the introduction, writing the body of essay, and writing the conclusion. [14]
A pipe bomb is an improvised explosive device (IED) that uses a tightly sealed section of pipe filled with an explosive material. The containment provided by the pipe means that simple low explosives can be used to produce a relatively large explosion due to the containment causing increased pressure.
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Expository writing is a type of writing where the purpose is to explain or inform the audience about a topic. [13] It is considered one of the four most common rhetorical modes. [14] The purpose of expository writing is to explain and analyze information by presenting an idea, relevant evidence, and appropriate discussion.
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