Dangerous cargo Committee of the International Civil Aviation Organization, a U.N. Agency, met this week in Montreal. Officials familiar with the discussions said the panel heard detailed presentations by the manufacturer of the aircraft and pilot unions on potential battery to cause an explosion and resulting fire is able to destroy the plane.
The Committee agreed to create a special working group to try to come up with a battery pack which will contain a fire or explosive gases into the package, officials said. If the Working Group could not come up with such packaging, the officials said they considered it unlikely that the official proposal to ban bulk battery shipments of passenger aircraft will be offered at a meeting of ICAO on dangerous cargo in October.
Batteries which are used in devices from mobile phones to electric cars. It is not uncommon for as many as 80,000 batteries must be carried on board the aircraft. The global battery industry has lobbied heavily against the significant restrictions on shipping batteries in addition to small changes of the present regulation.
Testing by the US Federal Aviation Administration over the past year and a half has repeatedly pointed out that a single battery short-circuit in the delivery of the batteries may cause battery overheating to spread to others. Fire suppression system has been able to put out the fire early, but they haven't been able to stop the spread of steadily rising temperatures is known as thermal runaway.
Battery too hot gas mixture explodes, emitting that hydrogen is the most abundant. As the gas build up, they eventually explode and ignite intense fire.
FAA tests in February resulted in a strong blast even though done in a pressurized chamber with a 5 percent halon. Halon gas main is being used to suppress fires in cargo compartments of passenger planes. Triggered by smoke, fire suppression system release halon gas to reach 5 percent of air cargo compartment. It has long been accepted by aviation authorities that halon levels enough to extinguish the fires, including fires most lithium-ion batteries.
"We are now no longer believes that will happen," said pilot Mark Rogers, who represents the Air Line Pilots Association in the us and Canada and other international pilot unions on freight issues in the process of the world civil aviation organizations.
February tests resulted in an explosion in which the pressure in the chamber rises from the normal 15 pounds per square inch to 70 psi, according to an agency presentation slides. Without the presence of halon, a blast was even stronger, with increased pressure to about 80 psi.
Two security experts interviewed by The Associated Press described the blast that power as "significant." John Goglia, a former National Transportation Safety Board Member, said the explosion might be able to blow holes in the aircraft and causing a depressurization for passengers without damaging the aircraft. He pointed to examples of aircraft that had landed safely after the blast.
Last month, the Coordination Council of the International Aerospace Industry Association, which represents companies such as Boeing and Airbus aircraft, and pilot unions submit paper work together for Civil Aviation Organization recommends ban on bulk battery shipments on passenger aircraft to safer packaging can be developed. The paper, which is not regarded as a formal proposal under the UN rules, refer to the battery fire threat "unacceptable risk."
FAA tests showed "considerable leeway control lithium battery fires could eventually negate the ability of fire suppression systems for cargo planes at the moment, and can lead to catastrophic failure of the fuselage," the position paper said.
More and more airlines have also said they will no longer accept bulk battery shipments, including Delta, United Kingdom, Cathay Pacific, Qantas, British Airways, and Cargolux.
source :http://www.thejakartapost.com
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