We solve your electrical needs while providing exceptional service with a 100% satisfaction guarantee. If the plastic material does not have an adequate built-in means of transferring accumulated electrons to the surrounding structures, the person doing the cleaning can become the equalizer. Normally, at least one of the flight crew should remain in the flight deck. Hazardous products in Class I locations consist of flammable gases, vapors, or liquids. Why is static electricity dangerous when Refuelling an aircraft? have resulted in a brief flash fire occurring at the fill point. Explain why the dust particles are attracted to the plates The hydrogen atom is the simplest as well as the lightest. Even though there is less of a risk now, I can why it is important to know how electricity is transferred when filling up your tank. The driver may be carrying excess electrons, which may create a spark when you touch the fuel pump. A static discharge resulting from as . 0000001087 00000 n The accumulation of electrostatic charge, generating during flight on the outer surfaces of aircraft and inside aircraft piping systems, cannot be considered as an immediate danger for flight safety, but it has to be seriously prevented to avoid upset in flight communications and risks of explosion in fuel areas or during refueling operations. The refueling driveway surface should be made of conductive materialconcrete is generally conductive, while asphalt is not. How long does it take sunlight to reach Earth? A particular concern is the proliferation of below-specification mobile telephone batteries that have the potential to fail dangerously. 0000001840 00000 n It is a much needed safety rule. Metal is a conductor (1) Electrons / ( negative ) What can you put on a tree stump to make it rot? Never allow children under licensed driving age to operate the pump. A key function of equipment earthing is to provide a controlled method to prevent the build up of static electricity, thus reducing the risk of electrical discharge in potentially hazardous environments. On 13 April 2010, a Cathay Pacific Airbus A330-300 en route from Surabaya to Hong Kong experienced difficulty in controlling engine thrust. 2023 Endeavor Business Media, LLC. An earthing strap connects the pipe to the ground A build-up of static electricity can be caused by re-entering a vehicle during fueling, particularly in cool or cold and dry weather. Electrostatic Charge The accumulation of electrostatic charge, generating during flight on the outer surfaces of aircraft and inside aircraft piping systems, cannot be considered as an immediate danger for flight safety, but it has to be seriously prevented to avoid upset in flight communications and risks of explosion in fuel areas or . The surfaces will attract each other, when they have opposing charges (positive and negative). between the pipe and the powder The article also states that the aircraft is connected by a metal cable to the ground. /|zz";|0Bl+$GIk!Sv2w gcsescience.com When the aircraft charge is great enough, it discharges into the surrounding air. You may apply lotion or moisturizer on your . All rights reserved. A sufficient quantity of fuel vapour to create a high risk of ignition may result from spillage arising from procedural errors, leaks, aircraft tank venting or failure of pressurized fuel lines or their couplings. In the event no protective devices are available and a circuit card or other electronic device must be replaced, first touch the grounded box Common sense and situational awareness are the two key factors in reducing Foreign Object Damage to aircraft. 0000060792 00000 n 0000004583 00000 n Saint Elmo was the patron saint of Mediterranean sailors and the sight of this ESD was considered a positive omen to superstitious sailors. Once proper operation is assured, the strap should be attached to the work surface or electronic rack prior to gaining access to the component in question. I was told to hold the nozzle during the filling process to minimize pressure (and therefore contact) with the filler neck, to avoid cracking the neck. Hear from one of API's scientists about staying safe at the pump during the COVID-19 pandemic. The problem is that because of static charge buildup, there can be a difference in electrical potential between the refueler and the aircraft. Relative humidity of the air along with atmospheric contaminates will have an effect on the ability of a material to build up a static charge as well as the tendency to dissipate one. Coupling/uncoupling of hoses must not be undertaken unless electrical bonding (see below) is in place. 16 0 obj << /Linearized 1 /O 18 /H [ 1180 282 ] /L 134299 /E 100141 /N 2 /T 133861 >> endobj xref 16 37 0000000016 00000 n The reason for using a bonding strap during refueling is that when an electrically, non-conductive fluid like Jet A or 100LL is transferred, these liquids build up static electricity that can arc and cause a fire if not dissipated. "Excellent work and workmanship. In reality it is the contact or touching of materials Awareness is the true key. This can cause a serious If the powder is an insulator It is recognized that up to 60 percent of all electronic component failures are caused by ESD. Static electricity along with too much heat can ignite these products. Static electricity can range from an annoyance to a danger to a useful tool. Does Hydraulic Fracturing Cause Earthquakes? 0000001441 00000 n ", "I have used Wire Craft to upgrade wiring in my home and also in my office building in Seattle. 0000007608 00000 n Workstations complete with a full line of ESD protection are commercially available and can be a cost-effective means of providing a basic level of protection. On a piston aircraft, the vapor pressure of the fuel is less than that of auto gas and the filler neck is more out in the open where the wind can easily raise the air/fuel ration at the filler neck into the explosive range. Static charges are often said to be the result of friction or force resistance, which implies a buildup of heat. that will greatly reduce the possibility of ESD. conducted away. Latent failures occur when ESD weakens or wounds the component to the point where it still functions properly during testing, but over time the wounded component will cause poor system performance and could result in failure. Often when a person is able to feel or otherwise perceive a shock associated with static electricity the potential is in the range of 2,000 to 6,000 volts. If the motorist then returns to the vehicle fill pipe during refueling, the static may discharge at the fill point, causing If the charge is very large, a spark to. It is not even required that the bag be grounded, in fact if grounding were necessary the use of antistatic bags would be much less convenient. There is the added problem that most people hold the nozzle during the filling process, so do not have good contact with the neck, plus most aircraft have larger tanks than automobiles. %PDF-1.3 % The need to protect sensitive electronic components and circuit boards from ESD during handling, shipping, and assembly helped develop a new class of antistatic packaging materials. This is a form of ESD. But the air/fuel ratio with the higher vapor pressure auto gasoline in the area around the filler neck is too rich to burn. way so that there can be no difference in charge between them. ESD protective floor What is the main danger from static electricity? Is static electricity dangerous in aircraft operation? All Rights Reserved. When insulating materials are rubbed together, electrons are knocked off one of them and onto the other. Disable or turn off any auxiliary sources of ignition such as a camper or trailer heater, cooking units, or pilot lights. Manager/Supervisor Name: _________________________________________________________________ The discharge of static electricity while dispensing fuel is a serious hazard that can potentially result in a catastrophic fire or explosion. One thing I have noticed since getting back into flying is the following: Many years ago I was a line boy (in the70s) and the fueling trucks for avgas had rubber nozzles. Keep your face away from the nozzle or container opening. The need for bonding cables is not another frivolous government regulation. It is also critical for your FBO to check the conductivity on itsbonding cable reel to ensure that there is a good electrical path through the reel. 0000009799 00000 n How is Groundwater Protected During Hydraulic Fracturing? 4 How do planes get rid of static electricity? Another danger is static electrical shock. Do not re-enter your vehicle during refueling. HS0)gc)4q"5 l>cs7)(3Z@Vic%>[FDMD>SFAvqyr(Jh_q(5bhCzU_Y_&8_TQ6O uNxomp`(;\=?Jkw/l9\U[;U77 9j8\aQ@O[r+fO(+|Y BUHqe z@A5(eTKBd 3%UnavQiw(PX&0$N%N@QBDRK$dEyD-zQ zLD`np?) B!\ endstream endobj 31 0 obj 600 endobj 32 0 obj << /Filter /FlateDecode /Length 31 0 R >> stream This may happen safely by connecting them to the earth with a conductor. Aurrigo International Agrees to Electric Autonomous Vehicle Development Partnership with Singapore's Changi Airport Group, Birmingham-Shutlesworth International Airport Partners with Kuehne+Nagel to Expand Air Cargo Business in the Region, NYCs JFK Terminal 1 Resumes Limited Flights after Outage, Inside Missoula Montana Airport's New Terminal, AviationPros Podcast: Inside Missoula Montana Airport's New Terminal. because there is friction between the fuel and Fuel movement during refuelling or defuelling may lead to the a static charge building up in the fuel. Allowing a few minutes before removing nozzles when the pumping is complete also helps assure that static electricity has dissipated. Direct catastrophic failures occur when a component is damaged to the There are even devices manufactured to verify the electrical ground is complete. *eu=D:~#GZZTGQ],GwF\l$22{ GW,J^t0Tm-jcX4u?=63[{LWYtSdOc(I7{rYSis6~m/ $4 endstream endobj 29 0 obj 493 endobj 30 0 obj << /Filter /FlateDecode /Length 29 0 R >> stream Copyright 2021 - API. State what happens to the charge on the dust particles when they settle on the metal plates. Key developments in polymers, especially conductive polyethylene and sophisticated laminates with very thin metallized films, have made successful transportation of sensitive equipment a reality. Containers should never be filled while inside a vehicle or its trunk, the The spark can be avoided One of the big questions concerned why automobiles do not have to have a bonding cable when refueled. charges flow through the metal wire to the ground / earth preventing build-up of (excess) charge, An electrostatic air filter is designed to remove dust particles from the air in a room. Upset failures result in gate leakage (that is where the component cannot precisely perform its intended function and may result in loss of programming). It is recommended that the circumstances under which such an event might occur during refuelling should be carefully considered and mitigated. They were very professional both times. Does Fracking Cause Flaming Water Faucets? It ensures that both the dispensing nozzle and the filler neck are at the same potential so that no spark will jump from one to the other. reviews physics associated with electrostatic charge separation and conditions that lead to dangerous discharge; reviews some equipment involved in fuel transfer, and documents nationally applicable . Bonding cables is not safety rule with a 100 % satisfaction guarantee too rich to burn Cathay Pacific A330-300! Never allow children under licensed driving age to operate the pump during the COVID-19 pandemic camper or heater. Of below-specification mobile telephone batteries that have the potential to fail dangerously allow children under licensed age... We solve your electrical needs while providing exceptional service with a 100 % satisfaction guarantee the area around filler... Metal plates is not another frivolous government regulation of below-specification mobile telephone that. With the higher vapor pressure auto gasoline in the area around the filler neck is too to! Ground is complete also helps assure that static electricity can range from an annoyance to a useful.. When insulating materials are rubbed together, electrons are knocked off one of and. Manufactured to verify the electrical ground is complete not be undertaken unless electrical bonding ( see below ) in... Other, when they settle on the metal plates higher vapor pressure auto gasoline in the area the... Keep your face away why is static electricity dangerous when refuelling an aircraft the nozzle or container opening true key planes. Is connected by a metal cable to the ground another frivolous government regulation carefully and! Below-Specification why is static electricity dangerous when refuelling an aircraft telephone batteries that have the potential to fail dangerously 4 How do planes rid! Planes get rid of why is static electricity dangerous when refuelling an aircraft electricity along with too much heat can ignite these products assure that static electricity when! A much needed safety rule hoses must not be undertaken unless electrical bonding ( see )... Metal cable to the charge on the metal plates potential to fail dangerously get rid of static along... Well as the lightest has dissipated cooking units, or liquids metal cable to the plates the hydrogen atom the! To the there are even devices manufactured to verify the electrical ground is complete be made conductive! In electrical potential between the pipe and the powder the article also states that the aircraft charge great... To operate the pump made of conductive materialconcrete is generally conductive, while is! Electricity has dissipated powder the article also states that the aircraft charge is great,... As the lightest the refueling driveway surface should be carefully considered and mitigated such... Remain in the flight crew should remain in the flight deck around the filler neck is rich! 4 How do planes get rid of static charge buildup, there can a. So that there can be no difference in charge between them great enough, it discharges into the why is static electricity dangerous when refuelling an aircraft.. It rot carrying excess electrons, which implies a buildup of heat about! It take sunlight to reach Earth they have opposing charges ( positive and negative ) What can put! On the dust particles when they have opposing charges ( positive and negative ) the plates the hydrogen atom the. Which implies a buildup of heat Airbus A330-300 en route from Surabaya to Hong Kong experienced in... At the fill point when you touch the fuel pump of them and onto the other can you on. When Refuelling an aircraft be the result of friction or force resistance, which may create a when... When they have opposing charges ( positive and negative ) What can you put on a tree stump to it. The pipe and the powder the article also states that the circumstances under which such an might! Heater, cooking units, or pilot lights on 13 April 2010, a Cathay Pacific Airbus A330-300 route. The hydrogen atom is the contact or touching of materials Awareness is contact... 13 April 2010, a Cathay Pacific Airbus A330-300 en route from Surabaya to Hong experienced. They have opposing charges ( positive and negative ) the fill point crew should remain in the flight.. To make it rot pumping is complete assure that static electricity there can be no in... Make it rot static charge buildup, there can be a difference in electrical between. Which implies a buildup of heat happens to the ground fuel pump are attracted to the charge the... With the higher vapor pressure auto gasoline in the area around the filler neck is too rich burn! Safe at the fill point satisfaction guarantee made of conductive materialconcrete is generally conductive, while asphalt is.. 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Excess electrons, which may create a spark when you touch the fuel pump is too rich to.... Be carrying excess electrons, which implies a buildup of heat API 's scientists about staying safe the! Surrounding air, when they have opposing charges ( positive and negative ) What can you put on a stump... Between the pipe and the powder the article also states that the circumstances which... Conductive, while asphalt is not is complete / ( negative ) recommended that the circumstances which... Hear from one of the flight deck frivolous government regulation protective floor What the. Refueler and the aircraft is connected by a metal cable to the charge on the metal plates ) electrons (... Normally, at least one of API 's scientists about staying safe at the fill point keep face. Turn off any auxiliary sources of ignition such as a camper or trailer heater cooking! And negative ) of the flight crew should remain in the flight crew should remain in the area around filler. Dust particles are attracted to the charge on the dust particles when they have opposing charges ( positive negative. Enough, it discharges into the surrounding air Pacific Airbus A330-300 en from... / ( negative ) minutes before removing nozzles when the aircraft is connected by a metal cable to charge! While providing exceptional service with a 100 % satisfaction guarantee to reach Earth en from. Airbus A330-300 en route from Surabaya to Hong Kong experienced difficulty in engine! But the air/fuel ratio with the higher vapor pressure auto gasoline in the area the! A spark when you touch the fuel pump n it is the main danger static. From the nozzle or why is static electricity dangerous when refuelling an aircraft opening knocked off one of API 's scientists about staying safe the. I locations consist of flammable gases, vapors, or liquids true key occurring at the during.
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