Exxon Valdez On March 24, 1989, shortly after midnight, the oil tanker Exxon Valdez struck Bligh Reef in Prince William Sound, Alaska, spilling more than 11 million gallons of crude oil. Eight of the 11 cargo tanks were ruptured and Alaska North Slope crude oil began gushing from the tanker into the waters of Prince William Sound. The state and federal governments estimate that 250,000 to 260,000 barrels of North Slope crude oil (11 million U.S. gallons) spilled from the tanker. The size of the spill and its remote location, accessible only by helicopter and boat, made government and industry efforts difficult and tested existing plans for dealing with such an event. The spill posed threats to the delicate food chain that supports Prince William Sound's commercial fishing industry. Also in danger were ten million migratory shore birds and waterfowl, hundreds of sea otters, dozens of other species, such as harbor porpoises and sea lions, and several varieties of whales. The Tanker / Vessel Exxon Valdez (EV) was a typical modern tankship of all welded steel construction. The EV was delivered to Exxon on December 11, 1986 and was the largest ship ever built on the West Coast of the United States. It was the first of two Alaska-class tankships designed and built for the Exxon Shipping Company by the National Steel and Shipbuilding Company in its San Diego shipyard. The vessel was designed to meet standards of the International Convention for the Prevention of Pollution from ships of 1978. These standards provided for protectively located ballast tanks, maximum tank compartment length, and damage stability. The EV was certified by the US Coast Guard for the transportation of crude oil products. The Exxon Valdez measured 987 feet long, 166 feet wide, and 88 feet deep from the main deck to the flat keel. The tankship had a maximum draft (loaded draft) of 64.5 feet. At maximum draft the ship could transport about 1.48 million barrels (25238.1 gallons) of crude oil per voyage. (see pictures at bottom). Initial measurements by the chief mate about 30 minutes after the grounding indicated that 115,000 barrels of the 1,263,000 barrels loaded had been lost. By 6:00am, gauge readings indicated about 215,000 barrels had been lost. Three methods were tried in the effort to clean up the spill: burning, mechanical cleanup and chemical dispersants. A trial burn was conducted during the early stages of the spill. A fire-resistant boom was placed on tow lines, and two ends of the boom were each attached to a ship.
On April 9, 1997, Rig 52 that belonged to Mallard Bay Drilling was towed to a location in the territorial waters of Louisiana, where it drilled a well over two miles deep. After the well was almost complete an explosion occurred killing four of the crew and injuring several others. Seeing that this was a marine casualty in navigable U.S. waters, under existing regulations the United States Coast Guard responded. When the investigation was over the Coast Guard did not find any violations of their regulations and noted it was an uninspected vessel and the operator held an Operator Uninspected Passenger Vessel (OUPV) license. Soon after the incident the Occupational Safety and Health Administration (OSHA) cited Mallard Bay Drilling for violations
It’s a normal day at work when suddenly there is an explosion, trapping hundreds of people inside collapsing buildings covered in rubble. Coworkers, friends, and family are gone, never to be seen again, lost to senseless acts of terrorism. In 1993, 1998, and 2000, these events came to pass in the form of terrorist bombings on U.S. targets across the globe. The World Trade Center complex was a symbol of wealth and prosperity, but quickly became the target for radical Muslims and was attacked early in 1993. Despite this attack, the American people did not think that the terrorist organization behind the attack, al-Qaeda, was much of a threat, failing to properly respond to the attack and prepare for the future. Five years later and across the globe, another bombing occurred. This attack targeted the U.S. embassies in the African countries of Kenya and Tanzania. Again, the U.S. was distracted from the incident and did not react in a proper manner. Finally, in 2000, the U.S. was again subjected to a terrorist attack, this time on a naval warship docked in Yemen. The country again looked on in horror as the unthinkable happened, leaving people to again question their safety. Although these attacks on American targets were devastating, the United States should have learned from its mistakes to better prepare and defend against the September 11th attacks.
April 20, 2010, a tragic disaster struck the Gulf Coast. British Petroleum deepwater Horizon oil rig cracked from three places and raw oil leaking into the sea. .it was considered that over 60,000 barrels of oil a day are mixing with Gulf water and Oil spread over 70 miles to 130 miles into the sea and can be seen from space.
for the workers of the company. All the blame is not due to poor design and construction flaws, but to the oil companies for not teaching the employees about the system. This disaster could have been prevented if the engineers and oil companies were not blinded by their ignorant beliefs that the Ocean Ranger was unsinkable. Citations 1. http://www.canadianheritage.org/reproductions/21050.htm.
Many businesses that sell seafood had to cut back on it for the past few months. It has been since April that businesses are now selling shellfish back on the menu for a somewhat reasonable price. A major incident occurred just two days before Earth Day. The incident is well known as the Deepwater Horizon oil spill, or as many others call it, the Gulf of Mexico oil spill. The Deepwater Horizon drilling rig along the Gulf of Mexico is an oil-spill that resulted from an explosion that is under contract with BP, leading up to over million barrels of oil spilling into the Gulf of Mexico. This incident has led to many controversies. Arguments in discussion are whether or not we should continue to drill offshore, what exactly went wrong, and why none of the safeties were unable to activate.
Do you remember the conflict that America had in the Persian Gulf a few years back? An incident occurred there where a man drove a truck loaded with explosives into the building where more than 100 Marines were stationed. He blew up the building, along with the Marines. The incident was published by the AP Press soon after. Now do you remember the bombing just four years ago, in Oklahoma City? Suspects Timothy McVeigh and Terry Nichols drove a Ryder Van loaded with 4,800 pounds of fertilizer and fuel oil to the front of the Alfred P. Murrah Federal Building, where it subsequently exploded, killing 169 people and injuring some 500 others. Of course you do. While both were massive acts of violence involving American citizens, the impact of such acts is always felt the most when it happens right here at home.
Clean water involves seclusion of lakes and hoping the acid rain does not reach these pure water supplies. Another major source of contaminating clean water are oil spills and how destructively they blanket the shoreline they come in contact with. Although offshore drilling expeditions contribute some to the devastating outcome, oil tankers are the superior enemies toward the water. One estimate is that for every one million tons of petroleum shipped one ton is spilled. The largest super tanker spill was in 1979 when 3.3 million barrels was spilled off the coast of France. The largest in the United States was the Exxon Valdez in the gulf of Alaska. On the night of March 24, 1989 the 987 foot Exxon Valdez ran aground in the gulf of Alaska spilling 260,000 barrels of oil. With the help of the forceful winds, the slick soon covered about 1,100 miles of shoreline, including many islands in the sound.
In 1886, the GLUCKAUF, built in Britain in 1886 became the world's first true; oil tanker with separate tanks for the oil, built into her hull. Previously, petroleum had been transported in small containers loaded on conventional merchant ships. The driving forces behind the evolution of tankers were the demand for oil and the growing competition between oil companies striving for a greater share of the market for kerosene and other refined products. In 1850, the cargo ship generally still had her sailing ship-type flush deck, except for a central bridge built across the tops of the paddle frames. This was found to be convenient place from which the Captain and watch keepers could control the ship, even though the steering wheel and the helmsman were still exposed on the upper deck aft and were often lost overboard in heavy seas. This created another need for the cargo ship to be refined.
The Tacoma Narrows Bridge is perhaps the most notorious failure in the world of engineering. It collapsed on November 7, 1940 just months after its opening on July 1, 1940. It was designed by Leon Moisseiff and at its time it was the third largest suspension bridge in the world with a center span of over half a mile long. The bridge was very narrow and sleek giving it a look of grace, but this design made it very flexible in the wind. Nicknamed the "Galloping Gertie," because of its undulating behavior, the Tacoma Narrows Bridge drew the attention of motorists seeking a cheap thrill. Drivers felt that they were driving on a roller coaster, as they would disappear from sight in the trough of the wave. On the last day of the bridge's existence it gave fair warning that its destruction was eminent. Not only did it oscillate up and down, but twisted side to side in a cork screw motion. After hours of this violent motion with wind speeds reaching forty and fifty miles per hour, the bridge collapsed. With such a catastrophic failure, many people ask why such an apparently well thought out plan could have failed so badly?(This rhetorical question clearly sets up a position of inquiry-which iniates all research.) The reason for the collapse of the Tacoma Narrows Bridge is still controversial, but three theories reveal the basis of an engineering explanation. (Jason then directly asserts what he found to be a possible answer to his question.)
Because it is the most highly publicized of the different forms of ocean pollution, oil spills, oil leakages, and general oil contamination are something that we all seem to be aware of. Since the Exxon Valdez incident, the American public in particular has been more and more critical of oil companies.Each year, over 700 million gallons of oil end up in the ocean. Contrary to what you may have thought, most oil pollution doesn't come from tanker accidents. In fact, tanker accidents account for less than 90 million of the g...
The Exxon Valdez was the largest offshore oil spill in the U.S. until the BP oil spill. The Exxon Valdez spill released over 10 million gallons of oil into the Pacific Ocean. The spill effected over 1,100 ...
After the collision, six watertight compartments began filling with water. Soon, water spilled over the tops. Scientists have concluded that the watertight compartments contributed to the disaster by keeping the flood waters in the bow of the ship [Gannon, 1995].
Nelson, A.N. 1971. Effects of oil on marine plants and animals. London: Institute of Petroleum.
On April 20, 2010, the Deepwater Horizon oil rig, located in the Gulf of Mexico exploded killing 11 workers and injuring 17. The oil rig sank a day-and-a-half later. The spill was referred to as the Deepwater Horizon oil spill, BP oil spill, Gulf of Mexico oil spill, and BP oil disaster. It was first said that little oil had actually leaked into the ocean but a little over a month later the estimate was 12,000-19,000 barrels of crude oil being leaked per day. Many attempts were made to stop the leak but all failed until they capped the leak on July 15, 2010, and on September 19 the federal government declared the well “effectively dead.” In the three months that it took to finally put a stop the leak, 4.9 million barrels of oil were released into the ocean. The spill caused considerable damage to marine and wildlife habitats and the Gulf’s fishing and tourism industries. The White House energy advisor, Carol Browner, goes as far to say that the Deepwater oil spill is the “worst environmental disaster the US has faced.”
The Gulf of Mexico spill of 2010 was caused by an explosion on the deep water horizon offshore oil plat form off the Gulf of Mexico. This explosion caused crude oil to gush out into the ocean and can be attributed to both company and ...