HUNTINGTON BEACH, Calif. – The South California submarine oil pipeline may have hit the pipeline for several months a year before dropping tens of thousands of gallons of garbage, the US Coast Guard announced Friday.
A large foreign vessel may have hit a large pipeline, crushing concrete concrete but not causing a narrow crash that spilled oil last week, said Capt Jason Neubauer, head of the Coast Guard’s inspection and inspection office.
The length of time was probably based on the size of the water in which the pump was detected in an underwater study.
The pump, which was found to be inoperable last October, may have hit several times and other ports during this time, he added.
No boats were found, however.
“We will be monitoring every movement over this pipeline, with all the deep closures from the cloud all year round,” said the captain.
The pipeline was pulled up along the bottom of the ocean by about 500 million, said Neubauer.
This indicates that a large vessel is connected, he said. Cargo ships with multiton anchor regularly sail through the area from the ports of Los Angeles and Long Beach.
It drops dark beaches and kills seabirds.
Fifteen accidents on crude oil pipelines or other hazardous beverages have been linked to support measures or an anchor demonstration since 1986, according to an Associated Press survey of more than 10,000 reports submitted to the courts.
According to union records, in some cases anchor stroke has never been confirmed, such as the 2012 drop from the ExxonMobil pipeline in Louisiana shallow Barataria Bay, where direct direct bait or another ship was also considered a chance.
In some cases the evidence of the beating of the bond was clear. During the 1992 Hurricane Andrew, an 30,000-pound anchor was pulled by a dropper over a Texas pipe in the Gulf of Mexico, causing an open tear when the line was resumed.
In 2003, about 7,000 weights were found to be ten feet high from a drop near the Shell oil pipeline in the Gulf.
A video of the Coast Guard released by China seems to show a channel in a sea of sand leading to a curve in a submerged line, but experts have given different views on the value of a short, light bulb. The first video showed a thin slit, thirteen (33-inches) long in a row.
Robert Bea, a professor of engineering at the University of California, Berkeley and a former engineer of Shell Oiri, said the second video seems to show an influx into the sea created by the anchor’s trajectory leading to the damaged pipe.
Analysts, however, are expected to consider other forces that could have propelled and damaged the pipeline, including floodwaters flowing through the sea.
It takes time.
“The results from the test need to be stabilized – stabilized. This can lead to further questions,” said Bea.
Frank G. Adams, president of Houston-based Interface Consulting International, said in an email that the slightest bump in the line shown in one video “does not mean like a collision injury.”
If the pump is hit by a hose or something heavy “that usually results in physical damage that can cause a breach,” he said.
Reports of a fall drop from Huntington Beach were initially released Friday evening but no drop was made until Saturday morning. While the magnitude of the pouring is unknown, Coast Guard on Thursday slightly revised the estimates to about 25,000 liters (95,000 liters) and less than 132,000 liters (500,000 liters).
The Coast Guard said about 500,819 liters of garbage were found from the sea. Oil has spread to the southeast along the coast with reports of low-lying coastal areas in San Diego County, another 50 miles (80.47 km) from the original site.
Local health officials said Friday that air samples from potential oil spills are in the background – in other words, similar to air quality on a typical day – and below California’s pollution levels measured.
Currently the damage to wildlife is minimal – 10 birds have died and another 25 have been revived and treated – but environmentalists warn that long-term damage could be serious. As clean-up continues along the coast, some beaches in Laguna Beach reopened Friday, though the public is still unable to access the water.
Analysts are trying to determine what happened in the crucial first hours after a report of a potential oil spill began to emerge.
The tight dress seen in one video could explain why signs of oil slippage were seen Friday night, but the dumps avoided the sight of a pump operator for more than 12 hours.
“My experience shows that it would have been a very difficult test to see quickly,” said Richard Kuprewicz, an independent pipeline analyst and consultant. “This type of opening, a 17-mile (27-kilometer) submarine pipeline is very difficult to detect with remote signs. These outputs are low and can persist for some time. ”
If the pipes fail soundly, the breach will be large, which the industry calls a “fish mouth” breaks down because it looks like a fish mouth, he said.
Amplify Energy, a Houston-based company that operates three oil-based ports and a pipeline south of Los Angeles, said it did not know there had been a spill until its employees saw the oil at Saturday at 8:09 am
The excavation took place about five miles (8 miles) off the coast at a depth of 98 feet (30 meters), investigators said. A 4,000-foot (1,219-meter) pipe removed 105 feet (32 meters), bent like a rope on a bow, said Amplify’s CEO Martyn Willsher.
Jonathan Stewart, a professor of political and environmental studies at the University of California, Los Angeles, said moving a large section of the pipe would cause “curved distortion” – stress on the side extended to form a circle, forcing one, as it was bent inwards, Stewart said.
It is possible that only such pressure can cause relaxation, although Stewart said there is very little information to conclude about the cause. It is possible that a sharp part of the slab may pierce the pipe but “you may continue to err from the bend.”
“Because it’s pulling a pipe, you make these bends in the pipe, which can end up being so big that they break it,” he said.
Questions remain also about when the oil company knew it was in trouble and could delay announcing the pouring.
A foreign ship bound for the water from Huntington Beach reported to the Côte Guard that it saw a sheen longer than two miles (3 km) at about 6 pm on October 1, and that evening a satellite image from the European Space Agency also showed. the oil is likely to have slipped, was reported to the Côte Guard at 2:06 a.m. Saturday, after an examination by the National Oceanic and Atmospheric Administration inspector.
Federal pipeline safety controllers set the time of the incident at 2:30 am on Saturday but say the company did not shut down the pipeline until 6:01 am – more than three hours after a low-pitched alarm sounded a potential problem – and did not report releases to Coast Guard until 9 p.m. : 07 am Federal and national laws require notice and speedy disposal.
Amplify said the cable was already closed at 6 am, then resumed for 5 minutes for “meter reading” and again closed. Meter readings show how much oil flows in and out of a line. The company would have used that information to confirm if the alarm-switching alarm was stopped because the cable was out, said Kuprewicz and Ramanan Krishnamoorti, a professor of petroleum engineering at the University of Houston.
The company said the boat found oil on the water by 8:09 am
Associated Press correspondent Brian Melley donated from Los Angeles.