Visioneer Flatbed
Visioneer Flatbed
1996 Channel Tunnel Fire
Background
The train that caught fire was a HGV shuttle number 7539. It was made up of two locomotives (one at the front and one at the rear of the train, with the driver in the front one), an amenity coach carrying the truck drivers through the tunnel, and two rakes of HGV carrier wagons (a rake is a collection of unpowered rail vehicles of similar type and function, such as passenger coaches). The rakes contained a number of HGV carrier wagons (fourteen in the front rake, fifteen in the rear rake) plus flatbed wagons at each end of each rake to aid loading and unloading of the HGVs.
In total the train was approximately 800 metres long, with the driver in the front locomotive and all other persons (two crew and 31 passengers) inside the front coach. Twenty nine HGVs were being transported, one per wagon, behind the front flatbed wagon.
One HGV in the consist was placarded as carrying dangerous goods (polystyrene beads, UN 2211). It was located almost exactly half-way along the train. The other 28 trucks carried a variety of loads, some combustible, some inert. They included cornflakes, washing machines, glucose, titanium scrap, pineapples, paper and frozen fat.
Other trains were in the tunnel at the time of the incident. There were three trains ahead of train 7539, all of which drove out of the English portal as normal. Two trains entered the tunnel behind the incident train: a lone locomotive directly behind train 7539 (from which the driver evacuated to the service tunnel) and a Eurostar passenger train behind that (which reversed out through the French portal).
There were three trains in the opposite running tunnel, travelling from Britain to France, all of which were affected by the fire. Two of the trains were slightly affected by smoke as they passed through on their way to France, and one was instructed to stop in the tunnel near to the site of the fire in order to act as a rescue train. It stayed there for slightly less than one hour before those evacuated from the HGV shuttle were loaded onto it.
Safety features at the time of the fire
The Channel Tunnel and the trains that run through it are equipped with a series of safety features.
The three tubes are linked together and each link has some form of isolation. The escape cross-passages link all three tubes together but are fitted with fire doors that are normally closed. The two crossovers are equipped with sliding doors that can be opened to allow trains to pass from one tunnel to the other or closed to separate the two tracks. The doors are normally closed, although on the night of the fire the doors at both crossovers were open.
The two running tunnels are linked by pressure relief ducts. These are normally open, and are equipped with motorized butterfly valves that can be closed remotely.
The service tunnel is ventilated to keep it at a higher air pressure than the two running tunnels. This normal ventilation system (NVS) runs continuously and means that whenever a cross-passage door is opened, air will flow from the service tunnel into the running tunnel.
The running tunnels are usually ventilated by piston action of trains, but there is also a supplementary ventilation system (SVS), consisting of variable-pitch fans at Shakespeare Cliff and at Sangatte. These can be set to supply or extract, and together can move air in either direction along either or both running tunnels. The supplementary ventilation system does not usually run, but a controller can switch the fans on, then change the angle of the fan blades to have them extract or supply air.
The traction system is divided into sections of 1,500 metres in length, which can be remotely switched to isolate failed sections.
The tunnel has a network of firemains, one in each of the three tunnels, which are linked together at the cross-passages. There are hydrants at each cross-passage and at intervals of 125 metres in the running tunnels. The firemain is divided into sections by valves so that leaking sections can be isolated for repair.
Control of the tunnel is split into two types of control centre. The main Rail Control Centre (RCC) directs the rail traffic and operates the signalling, traction, pumping, lighting and ventilation. There are RCCs in both countries, although only one is in charge at any one time.
Each country has a Fire Equipment Management Centre (FEMC) which looks after all fire hazards and fire alarms in the terminal and in the tunnels. Each FEMC controls equipment in its adjacent terminal and a portion of the tunnel, and is home to a small works fire brigade dedicated to the tunnel. Main firefighting effort is provided by the fire brigades of Kent and Pas-de-Calais.
Fire detectors are located at intervals of 1.7 kilometres along the length of the tunnel. These consist of a series of different types of detector: optical, ionic and carbon monoxide. The system is set such that if any two go off together, it raises a confirmed alarm in the FEMC and RCC. If only one of the three goes off, it raises an unconfirmed alarm in the FEMC.
The locomotives are all equipped with halon gas fire suppression systems, as are the car transporters wagons. The HGV wagons are different: they are open to the tunnel. The amenity coach (where the truck drivers sit out the journey) has the same half-hour fire protection as the Eurostar carriages.
The tunnel is not equipped with an emergency station with water fire suppression (unlike the Seikan Tunnel, the Ltschberg Base Tunnel and the unfinished Gotthard Base Tunnel).
The tunnels are mostly lined with segments of extremely high strength concrete but are not protected against spalling, which occurred here and reduced the concrete to a thickness of 50 millimetres. Common countermeasures against fire-caused damage to tunnel linings are described under fireproofing and fire-resistance rating.
Timeline
Train 7539 left the French terminal at 21:42 CET. It stopped for a short time at a red signal before entering the tunnel at 21:48.
At 21:47, four French security guards (one pair in a building, two others on patrol) noticed a fire in the tractor unit of an HGV approximately three-quarters of the way down the train. They estimated the flames to be about 2 metres high.
As the train passed through the first few kilometres of tunnel, unconfirmed fire alarms were triggered each time it passed a fire detector.
At 21:51, the Rail Control Centre called the driver of train 7539 to inform him that there was a possibility that his train had a fire on board. He was told to continue through the tunnel, and that his train would be diverted to the emergency siding when he emerged into the open air at the UK side, at which point Kent fire brigade could attend to it.
At 21:52, a second train (consisting of a single locomotive) entered the tunnel behind train 7539. A few kilometres in, the driver encountered smoke thick enough to make him slow down. At the same time, one of the fixed smoke detector units in the tunnel triggered a confirmed alarm, indicating to the Rail Control Centre that there was definitely smoke in the tunnel.
In response to the confirmed alarm, the Rail Control Centre began to prepare for a fire in the tunnel, in case train 7539 did not make it to the other end. To that end, the control centre:
Ordered all trains to slow to 100 kilometres per hour;
Closed all of the butterfly valves in the pressure relief ducts (PRDs);
Ordered the sliding doors at the UK crossover and French crossover to close;
Switched on the lighting in the service tunnel and in the UK-bound running tunnel;
Mobilised the works fire brigade at the French and British sides, who both set off for the midpoint of the service tunnel.
The RCC’s actions were intended to isolate the two running tunnels from one another but were not completely successful. One PRD remained open, and the French crossover door did not close completely.
Shortly after train 7539 passed the French crossover, a safety system on the train issued a ‘Stop’ message to the driver. An alarm indicated that one of the propping loops on a wagon had failed, allowing a jack to drop out of its stowed position. The jacks are lowered to stabilize the train during loading and unloading but are raised when the train is moving, to reduce the risk of derailment if there is debris next to the track.
The driver followed Eurotunnel’s standard procedure for the failure of a propping loop: he brought the train to a controlled halt, stopping it with the amenity coach next to one of the escape cross-passages. The train came to rest in the tunnel at 21:58.
The driver intended to uncouple the front locomotive and the amenity coach, then drive out of the tunnel leaving the fire and the HGV wagons behind. However, a few seconds after stopping, the traction power supply tripped out, stranding the train. The failure was later attributed to heating of a soldered connection in the traction power system.
When it stopped, the train was in French territory, approximately 19 km from the French portal, 32 km from the UK portal and 2 km west of the French crossover. The train spanned three cross-passages: the west cross-passage (CP4131) was next to the amenity coach; middle cross-passage (CP 4163) was next to the HGV carrying polystyrene; and the east cross-passage (CP4201) was next to the rearmost HGV.
The fire was on an HGV in the rear rake, close to CP 4201, either in the seventh HGV (carrying corn flakes) or the tenth HGV (carrying reels of paper). The fire was approximately 600 metres from the front of the train, but the forward flow of air over the stopped train carried the smoke to the front and filled the tunnel ahead of the train.
As the air in the tunnel around the locomotive was filled with smoke from the fire, the driver could not see the number of the cross-passage he had stopped at. The Rail Control Centre was aware that he had stopped with the amenity coach next to one of two cross-passages (CP4101 or CP4131) but did not know which.
At 22:02, the Channel Tunnel’s French works fire brigade entered the service tunnel with seven firefighters. The Rail Control Centre acted on the belief that the front of the train was next to cross-passage 4101, and directed the French firefighters to that cross-passage. At 22:03, the British works brigade entered the service tunnel as well.
At 22:05, the emergency services of Pas de Calais were alerted and instructed to attend an incident in the tunnel and take command of the event. One of the French commander’s first acts was to ask that the tunnel’s supplementary ventilation system (SVS) be operated. At 22:12, the Rail Control Centre started both SVS fans but the fan blades were left at zero pitch angle and had no effect on the direction of airflow in the tunnel. Air continued to flow forwards over the train, bringing smoke from the fire towards the amenity coach. Fortunately, the fire was sufficiently far back (600 m) that there was no significant heat coming forward.
While the French works brigade were on their way to cross-passage 4101, the air quality on the train deteriorated and those aboard became increasingly concerned about their safety. The driver was unable to leave the locomotive, even with his emergency breathing apparatus on: the train crew inside the amenity coach were unable to contact the driver due to a failure of the radio system. No one inside the amenity coach could see the adjacent cross-passage due to the smoke in the tunnel, and smoke was slowly coming into the amenity coach through small openings in the bodywork.
At approximately 22:05, the Chef de Train in the amenity coach opened one of the train doors to check if he could see the adjacent cross-passage. He could not, despite it being directly opposite the door, and although the door was open only for a short time, it allowed a large amount of smoke to get into the amenity coach. Passengers and crew began to breathe through cloths and to take air from floor level, beneath the layer of smoke in the carriage.
While waiting for the French works fire brigade to reach the scene, the Rail Control Centre spent some time arranging evacuation of the driver of the locomotive behind train 7539. The Centre also reconfigured the traction supply to allow the train behind the locomotive to reverse out. In addition, one of the Eurostar trains bound for France was brought to rest in the north running tunnel close to the site of train 7539, so that it could act as a rescue train if it was required.
At 22:21, the Rail Control Centre remotely opened the cross-passage doors at 4101 (where the amenity coach was believed to be) and at cross-passage 4131 (where it actually was). Clean air from the service tunnel began to flow into the running tunnel through both cross-passages.
When the French firefighters arrived at cross-passage 4101, they found an open cross-passage but no train. The sub-officer noted that the supplementary ventilation system appeared to be doing nothing, and requested a check on whether it was operating correctly. The Control Centre subsequently realized that the SVS fans were spinning but that the fan blades had been left at zero pitch. The SVS was configured correctly at 22:22 and finally created an air current that moved smoke from the fire away from the people on board train 7539.
When the Rail Control Centre opened the door in cross-passage 4131, clean air from the service tunnel blew out onto the side of the amenity coach. This cleared smoke locally and allowed the occupants of the amenity coach to see that they were right next to an open cross-passage. The staff in the amenity coach subsequently evacuated all the passengers into the service tunnel, where they spent the next few minutes coughing up the soot they had inhaled.
As the French works brigade made their way east along the service tunnel, they came across the evacuees near CP4131. They checked that the amenity coach was empty, and escorted the driver to safety. At 22:35, they closed the fire door in cross-passage 4131 and concentrated on assisting the worst-affected of the evacuees with oxygen. They were assisted by the works fire brigade from the British side, who arrived on the scene at 22:30.
Between 22:42 and 22:52, 27 walking wounded were loaded onto the rescue train waiting in the north running tunnel. The train set off towards France at 23:08 and despite passing through a cloud of smoke in the vicinity of the French crossover, left the tunnel without incident.
The other seven evacuees, who were more seriously affected, remained in the service tunnel and were taken to France in service tunnel vehicles equipped as ambulances.
Response
Firefighting
Having assured themselves that all aboard the train were now safe, the French and British works fire brigades began to investigate the fire. A crew of firefighters entered the tunnel near to the front of the train and began walking towards the French portal. They came close to the fire after walking approximately 500 metres, then turned back and reported that the seat of the fire was between the next two cross-passages (CP4163 and CP4201). Cross-passage 4131 was closed and all firefighting operations were moved east to the two cross-passages closest to the fire. Subsequently, Kent fire brigade began firefighting operations at cross-passage 4201 (downstream of the fire), and Pas-de-Calais fire brigade began firefighting operations at cross-passage 4163 (upstream of it). Overall control of the firefighting operation rested with Pas-de-Calais fire brigade.
For the next five hours, teams of firefighters from both countries attacked the fire from the two cross-passages. They worked in breathing apparatus, hampered by fallen cables, flapping rags of glass fibre from the tunnel cable tray and spalled concrete. Each shift of firefighters could work in the tunnel only for short periods of time before returning to the service tunnel.
The presence of hundreds of firefighters spread along half a kilometre of service tunnel caused huge logistical problems with supplies of BA sets, water and sanitation from both ends of the tunnel.
The water supply at the two cross-passages became significantly poorer when firefighting operations began, mostly due to leaking pipework in the south running tunnel. The number of jets was reduced to two until a Eurotunnel engineer reconfigured the valves to isolate the pipework between the two cross-passages. Once the section of pipe was isolated, water delivery improved substantially.
At 05:00 on 19 November 1996, the fire was declared extinguished. Most firefighters left the scene at 14:50 that day, although the debris continued to cool for another day or so.
Casualties and damage
No one was killed during the incident, and only minor injuries were sustained, all consisting of smoke inhalation by those people on the train. The oxygen therapy provided by the French works fire brigade at the scene proved an invaluable benefit: after observation in various hospitals, the last (and most seriously-affected) person was discharged the following night (19 November). The light casualties are attributed to the presence of the pressurized service tunnel and the oxygen provided at the scene.
Despite working in excessively hot and wet conditions, with spalling concrete falling from above, no firefighter suffered serious injury during the operation to extinguish the fire.
Along a 50-metre length of tunnel, the normally 0.4-metre thick tunnel lining was reduced to a mean depth of 0.17 metres, with the thinnest area being 0.02 metres. The chalk marl showed no signs of failing or collapsing, but colliery arches were subsequently installed to support the ground as a precaution.
Over a further 240-metre long section (70 metres towards Britain, 170 metres towards France), damage to the concrete extended as far back as the first set of reinforcement bars, reducing the linings to a depth of 0.20.35 metres. These segments were repaired in situ without additional ground support.
Superficial damage to the surface of the concrete segments was evident along a further 190 metres of tunnel length.
In the vicinity of the fire, all services were destroyed. This included high-voltage cables, low-voltages cables, communications, lighting systems, traction and junction boxes over a length of 800 metres.
Five hundred metres of track had to be replaced, as did 800 metres of catenary, 800 metres of refrigeration pipe, and signalling equipment over a length of 1500 metres. In all, four escape cross-passages and five pressure relief ducts had to be refitted with new doors and dampers.
The damage to the train was concentrated in the rear half. The front locomotive, amenity coach and front rake (including the truck carrying dangerous goods) suffered minor damage from heat and smoke: all were re-usable after thorough cleaning and minor repairs. The rear rake suffered major thermal damage: eleven wagons and the rear locomotive were scrapped, as were most of the HGVs being carried.
Consequences
Three separate investigations were conducted. The first was a French judicial inquiry into the cause of the fire, the second was an internal inquiry by Eurotunnel and the third was an inquiry by the Channel Tunnel Safety Authority (CTSA), a bi-national body formed of personnel from British and French railway safety bodies, fire brigades and government departments.
In the immediate aftermath of the fire, all train services were stopped. Three of the four types of train service were resumed in stages over the following two months. Refurbishment work in the tunnel at the site of the fire meant that when train services restarted, single-line working of the north tube was used between the two crossovers. The refurbishment was completed in May 1997, after which the HGV shuttle service was allowed to restart.
The fire showed significant weaknesses in Eurotunnel’s control procedures. The large number of duties carried out by the Rail Control Centre during the incident meant that some were not completed when they should have been. The CTSA’s criticisms were all the more pointed because this aspect had been noted during an internal Eurotunnel assessment of the Control Centre earlier in the year. Additional staff, one of whom is dedicated to managing fire alarms, are now permanently on duty. The procedures for operating the ventilation system have been simplified.
Eurotunnel’s policy of attempting to drive trains through the tunnel in the event of an on-board fire has been abandoned, as was the back-up policy of uncoupling the locomotive and amenity coach. In the future, trains will immediately be brought to a controlled stop and the occupants evacuated into the service tunnel under the direction of the Chef de Train.[citation needed] In addition, all HGV wagons have been fitted with water fog fire suppression systems, and the trains lengthened to provide more space between the first HGV and the amenity coach.
Liaison between Eurotunnel and emergency services has been entirely revamped. In addition, joint exercises and exchanges of personnel between the British and French fire brigades have been instituted, so that each has experience of the other’s operational procedures.
Various other minor changes have been made which will have a significant impact on the progress of events in a similar situation. The illumination of the cross-passage markers has been improved and staff on board the trains provided with powerful torches. Responsibility for evacuating the train has shifted from the driver to the Chef de Train, and more train staff are now required to have first aid training.
Sources
Allison, Roderick; Ryder, Edward; Caldwell, Sandra; Beech, Jeremy; Moss, Peter; Coleman, Victor; Lejuez, Roger; Barthelemy, Franois et al. (May 1997) (Report and recommendations), Inquiry into the fire on Heavy Goods Vehicle Shuttle 7539 on 18 November 1996, Channel Tunnel Safety Authority, ISBN 0115519319, http://www.railwaysarchive.co.uk/documents/CTSA_ChanTun1996.pdf
First Sight: How safe is the tunnel?. BBC Television. January 1997.
Welsh, W. (2001). “Channel Tunnel Fire (UK)” (contribution from Kent Fire Brigade to NEDIES project). Lessons Learnt from Tunnel Accidents. http://nedies.jrc.it/doc/tunnel Accidents_Final.pdf.
Fudger, G. (March 1998). “Implications for Procedures in all Road and Rail Tunnels”. Seminar on Consequences of the Channel Tunnel Fire for all Road and Rail Tunnels.
Bradbury, W. M. S. (March 1998). “The Channel Tunnel Fire: Design Implications for Other Tunnel Systems”. Seminar on Consequences of the Channel Tunnel Fire for all Road and Rail Tunnels.
Kirkland, C. (2002). “The fire in the Channel Tunnel”. Tunnelling and Underground Space Technology vol. 17: pp.129-132. http://www.ita-aites.org/cms/fileadmin/filemounts/ovion/doc/safety/sydney/OS12.PDF.
Liew, S. K.; Deaves, D.M,; Blyth, A.G. (1998). “Eurotunnel HGV fire on 18 November 1996 – Fire Development and Effects”. Proceedings of the 3rd International Conference on Safety in Road and Rail Tunnels. ITC.
Comeau, E. (March/April 2002). “Chunnel Vision”. NFPA Journal.
Comeau, E.; Wolf, A. (March/April 1997). “Fire in the Chunnel”. NFPA Journal. http://www.nfpa.org/assets/files/PDF/JournalChunnel.pdf?src=nfpa.
French, S. C. (October 1994). “Fire Safety in the Channel Tunnel – An Overview”. Proceedings of the International Conference on Fires in Tunnels. Bors, Sweden. ISBN 91-7848-513-4.
French, S. C. (October 1994). “Heavy Goods Vehicle Test for the Eurotunnel Project”. Proceedings of the International Conference on Fires in Tunnels. Bors, Sweden. ISBN 91-7848-513-4.
Beech, J. (1990), Lecture to the Institution of Mechanical Engineers
Kirkland, ed (1995). Engineering the Channel Tunnel. Chapman & Hall. ISBN 0-419-17920-8.
v d e
Channel Tunnel
Construction
TransManche Link LGV Nord High Speed 1
Corporate
Eurotunnel Group Eurostar (U.K.) Ltd. SNCF NMBS/SNCB
Passenger Services
Eurostar
Freight Services
Eurotunnel Shuttle Europorte Channel
Other
Rail transport in France Rail transport in the United Kingdom 1996 fire 2008 fire 2009 snow
fire portal
Coordinates: 5100 130 / 51N 1.5E / 51; 1.5
Categories: 1996 in France | 1996 in the United Kingdom | Channel Tunnel | Fires in England | Fires in France | Railway accidents in 1996 | Train and subway fires | 1996 firesHidden categories: Articles lacking in-text citations from September 2008 | All articles lacking in-text citations | All articles with unsourced statements | Articles with unsourced statements from March 2009
About the Author
I am Cheap On Sales writer, reports some information about cardinal bird feeder , weather vane rooster.
I purchased a new scanner; installed the software twice! Now, I’m unable to receive any thumbnail photos?
I purchased a Visioneer 9320 flatbed scanner. It has Paperport software. I had to install, then un-install this software. Now I don’t get any thumbnail-sized photos.
Did the scanner software get compromised when I uninstalled, then reinstalled the scanner software. Could this cause problems in getting thumbnail photos?
iv found that the stupid little help area of windows gives u alot of troubleshooting advice try it out youll be surprised good luck
Visioneer Strobe 500
Visioneer Strobe 500
Pokemons and Health
Japan was still trying to figure out what hit it today, after 685 people were taken to hospitals with seizures, convulsions or loss of vision after watching a popular television cartoon on Tuesday. Some 200 victims, mainly children, remained hospitalized today.
Outraged mothers accused television networks of ignoring children’s health in the competition for ratings in the multi-billion-dollar animation business. Some called for introduction of an electronic screening device, comparable to the American V-chip, to help parents block out intense animation.
“We are gravely concerned about this escalating race, this competition by the television networks to show ever more stimulating images, targeting even children,” the country’s largest mothers’ organization said in a statement.
The victims, who range in age from 3 to 58 and live throughout the country, suffered attacks during a fast-action cartoon serial called “Pokemon,” or “Pocket Monsters.” The scene that apparently triggered the neurological episodes involved a bright-white explosion followed by brilliant red, white and blue lights that flashed like a strobe for about five seconds.
In the hour following the show, emergency service telephone lines all over the country began lighting up as people called ambulances. Some families reported that children stopped breathing momentarily; others reported seizures similar to those suffered by epileptics. Newspapers reported that even more people were stricken later in the evening when television news rebroadcast the scenes that made people sick, in an editorial decision not likely to be nominated for any public service awards. The Yomiuri Shimbun newspaper reported today that education officials had identified 12,950 children who suffered at least minor symptoms after watching the show.
The popular program was immediately yanked off the air and a major video rental chain removed taped versions. Shares of Nintendo, which invented the characters on which the show is based, took a nearly 5 percent shellacking on the Tokyo stock market.
And Japan, which produces some of the most creative and distinctive animation in the world, including some of the most violent, was left to ask itself: Is there really such a thing as a killer cartoon?
“It is already well known that television has a tremendous impact on human beings, and in the centuries to come it will become bigger and bigger,” said Kikuo Asai, a researcher at the Media Education Development Center in Tokyo. “But in many ways that mechanism has not been fully understood. Perhaps the `Pokemon’ case will help make it clearer.”
A grave Prime Minister Ryutaro Hashimoto offered this Buck Rogers-ish comment: “Rays and lasers have been considered for use as weapons. Their effects have not been fully determined.”
The incident has struck almost everyone here as the most bizarre thing that’s happened in Tokyo since a bearded guru with a Christ complex ordered his disciples to gas the city’s subway system in March 1995, killing 12 people and sending 5,500 others to the hospital.
About the only people who weren’t too surprised were neurologists and the makers of video games. As it turns out, there is ample precedent for intense optical stimulation causing epileptic seizures. Illness related to video games has increased in the past 10 years as video games have proliferated and their visual effects have become more intense.
After several teenagers suffered seizures while playing Nintendo games a few years ago, the company now includes a warning label on much of its software, saying that the games could cause a “shigeki,” or a strong stimulation, from bright lights, resulting in unconsciousness or convulsions. The warning advises users prone to such episodes to consult a doctor before playing. Sega also places a similar warning on its video games and software.
In Britain in 1994, the Independent Television Commission, which regulates commercial TV, limited the rate of flash to three per second.
The guidelines were instituted after a 1993 incident in which an ad for noodles aired that “had a great number of fast-moving computer graphics” and other quick variations in brightness, said Suzanne Prance, a spokesman for the commission. “A number of people complained about it, and there were three cases of people actually suffering seizures.”
But “it’s very difficult to eliminate the problem entirely,” Prance said. The issue “is flashing images but also quick changes in patterns such as a black-on-white star changing to a white-on-black star. All our broadcasters have to preview programs to ensure they are in compliance with our code.” Several Japanese television networks today said they would screen their animated programming to ensure that it does not contain the kinds of visual effects that caused Tuesday’s problems.
Animators said the “Pokemon” episode that sickened people contained no special effects or techniques that had not been used hundreds of times before. Animators said the technique known as “paka-paka,” or the use of different-colored lights flashing alternately to create tension, is quite common. “We cannot understand why it turned out this way,” said Takemoto Mori, the show’s producer.
Akinori Hoshika, a neurologist at Tokyo Medical College, said it is well established that optical stimulation can produce dizziness, nausea, fainting, loss of vision, seizures and other symptoms. Hoshika said children are especially susceptible because their brains and central nervous systems are not fully developed.
Hoshika said strong flashes of red and blue, which are at opposite ends of the color spectrum, tend to be particularly hard on the eye and brain and more likely to produce a reaction.
Japanese homes, many of which are very small and have large-screen televisions, may have made the problem worse. Watching TV in a Japanese apartment can be a little like sitting in the first row at a movie theater.
Today’s Yomiuri Shimbun reported that one 14-year-old boy who was sitting less than three feet from his big-screen television was unconscious for more than 30 minutes. A fifth-grade girl sitting seven feet from a 35-inch set suffered a seizure and felt, her family said, “as if she were under the spell of a hypnotist.”
A pediatrician in Osaka said he treated two children who were eating dinner in front of the television when they collapsed and fell into convulsions. The seizures lasted for about five minutes, but the children were conscious by the time they arrived at the clinic.
Still, having bright lights strobed into your face from 2 1/2 feet away would be enough to make anyone queasy. Having your senses assaulted with a bizarre kaleidoscopic explosion of light in the middle of your sushi and rice has got to be worse.
About the Author
HELP! My brand new $400 scanner won’t scan!?
I bought a Visioneer Strobe 500 with docking station. An error message says a VRS file-import dongle is not connected. Protection failure.
What does that even mean???
Thanks!
I don’t know what a dongle is (lol) but it is connected with a usb cord. It also came with a ADF pad but the instructions do not say what that is or where to connecte it. Is that it?
As Dynamo mentioned above, a dongle is usually a small hardware device that plugs into a computer port as part of a hardware protection scheme for software so that only one computer can be licensed and use it at one time. It can be a small USB device that looks like a small flash drive, or it can be built into the USB communication cable that came with the scanner. So make sure that the USB cable that you’re using for the scanner is the one that came with the scanner.
The other dongle option can be a software installation that takes the place of a physical dongle. This means that a certain piece of software needs to have been installed in order for the other software to work. Here is a link to Visioneer that talks about that problem specifically and the steps recommended to resolve it. It doesn’t list your model specifically, but may work all the same:
http://support.visioneer.com/Knowledgebase/Articles/VIS1444%20-%20There%20Is%20No%20VRS%20File%20Import%20Dongle%20Connected.asp
The ADF pad is a replaceable part of the automatic document feeder (ADF), it is not the dongle that is missing. It’s purpose is to allow only one page at a time to feed into the scanner when you have multiple pages stacked. On page 98 (PDF page #105) of your User’s Manual explains how to replace it, along with illustrations, when it is worn out. The previous pages explain how to clean it from time to time.
http://support.visioneer.com/downloads/Manuals/S500/S500_Guide.OT4.EN.pdf
If you’re still having problems with the software and dongle, contact Visioneer technical support.
Best of luck.
DM162 Demo Video YT 5 31 2010_0001.wmv
Visioneer Strobe
Visioneer Strobe
Finding a Good LED Flashlight for Patrol
Let’s face it, with so many flashlights in the market to choose from today, it can be difficult to find “the” one that is just right. No one ever likes to think they are making a poor choice when they make a purchase, but; it never seems to fail, shortly after you buy something, you’ll see something you like more.
For many police officers, flashlights are provided by their departments and they don’t get a choice, for others, it’s a personal choice and finding the right light can be daunting. Regardless if you are the officer making a decision for a SWAT team, a new cadet buying your first flashlight or an old road dog upgrading your incandescent light that’s seen better days, thinking about what you will do with that light will help point you in the right direction.
What do you mean what will I do with it? I’m going to light things up, dummy! Well, you’re right; you will light things up with it; but, how, where, when and why? When you are armed with the answers to these questions, you will be able to make a better choice for your needs; that way, when your buddy shows up and you begin to think he got something better, you won’t be second guessing your first choice.
For police work there are three types of lights; weapon mounted, vehicle mounted and those that are carried personally. People usually think of personally carried lights when they think of a flashlight. Weapon mounted lights have very special uses and an officer that has a weapon mounted light, even on a pistol, should also have a personally carried light as well. Pointing a “loaded flashlight” at an old lady with chest pain just isn’t cool. So let’s discuss personally carried lights and leave the vehicle and weapon mounted lights for another time.
It used to be one size fits most, when it came to flashlights. Today, if you have the budget and the arm strength, you can buy a high intensity discharge (HID) handheld light that puts out 5000 lumens for over 110 minutes; you can also buy a light you put on your keychain with a pushbutton LED that will last about 1000 hours and provide enough light to read your favorite novel. A 5000 lumen light would be great for search and rescue and a pushbutton LED would be great for a sniper that was referring to windage charts in low light. Somewhere between the aircraft landing light and the reading light there is a light suitable to your task.
For police work a light must be dependable, it doesn’t matter how bright it is supposed to be if it doesn’t work. A good light for patrol should run for at least 90 minutes on its highest setting before needing fed new batteries. Rechargeable batteries are always a good upgrade, when your light can accept them. If you go the rechargeable route make sure you invest in the best rechargeable batteries you can buy; your life may depend on them.
Brightness is also an important factor. If you are new to LED light technology, figure 80 lumens is brighter than older flashlights with 4 D Cell batteries. How bright is too bright? Well, if you are in low light or darkness, are you looking for bad guys? There are lights out now that are 400 to 500 lumens, that’s bright! However; with that much light, you could easily toast your low light vision and the bad guys for that matter and you are probably going to have enough backwash (light reflecting off everything in the room) to light up yourself as well.
I’m not against lights that are that bright; but, sometimes too much isn’t just right. Also consider as the lumens go up, the runs times go down and the light requires more batteries to feed its hunger for power. For me, 80 to 200 lumens is the neighborhood I look for in a good patrol light. 80 to 200 lumens is brighter than anything we have ever had access to, it is plenty of light to light up even the biggest of rooms we search and it is not so much light that we blind ourselves or silhouette ourselves in the process.
Along with the brightness comes adjustability. Having an LED light set to its highest setting isn’t required all the time. When you just need a “little” light for a task, having the ability to turn the light down is a must. Lower settings help conserve your low light vision and it saves on battery life as well. Most LED lights have several settings to adjust the light. The more the better; but be sure the light you consider has immediate access to the brightest setting so it can be accessed if a threat suddenly pops up. You don’t want to be fumbling with a light switch if you’re trying to acquire a bad guy.
A strobe function is also a good addition to a patrol light. If you are not familiar with “strobing,” it is a feature on today’s newest lights. Flashing a strobe light into the eyes of a subject in low light has been shown to disorient them, sometimes to the point of making them physically sick. For the user, being behind the light, the same untoward effects are not felt. The strobe can be a dramatic, intimidating tactic in low light. Like the adjustability; if your new light is going to have a strobe feature, it needs to be immediately accessible in a crisis situation.
The ability to carry the light also must be considered. For years, flashlights have been a round tube with the light at one end, the batteries stacked behind the light head and a switch on the tube or on the tail cap. New developments have changed the way we carry our lights, as well. There are lights you can clip on your shirt pocket or lapel, there are even lights you can wear on your head.
One company has designed a flashlight that is worn on the hand so both of your hands are free while using the light. To me this is an interesting concept. Think about this for a minute; if you are on a traffic stop in low light, do you have your light out? What are you going to do with that light if you need to demonstrate field sobriety tests? Write a ticket? Handcuff the subject? You are going to do what we all do, stick the light in your mouth (if it’s small enough), stick it in your belt or stick it under your arm. What about shooting at night? We all have our favorite flashlight technique for shooting a night; but, if the gun malfunctions or we need to reload, the light goes right into our mouths or under our arm.
Having a light on your hand and not in your hand is the biggest advance in flashlight technology I have seen to date. With this latest addition to the law enforcement field; a good patrol light should have the ability to be used and keep both hands free for other tasks as well.
You are now armed with the information you need to go forth and find a new light suited for police work. To summarize; the light should: run for at least 90 minutes on new batteries without a recharge, be 80 to 200 lumens in strength, be adjustable from full power to low power with instant access to the highest setting; have a strobe function with instant access and have the ability to keep both of your hands free while the light is in use. This a pretty tall order for a good patrol light. They are out there, just spend some time to find the light that is right for you; your life could depend on it.
About the Author
Rick London has been a police officer for sixteen years and is co-owner of www.tacticalleds.com. Rick has written numerous articles regarding LED flashlight technology and the application of LEDs to tactical LED flashlights used in law enforcement and public service.
What is an ADF pad and where does it go?
It came with my Strobe 500 visioneer scanner but no instructions as to what it is for or where to connect it.
The ADF pad is a replaceable part of the automatic document feeder (ADF). It’s purpose is to allow only one page at a time to feed into the scanner when you have multiple pages stacked. On page 98 (PDF page #105) of your User’s Manual explains how to replace it, along with illustrations, when it is worn out. The previous pages explain how to clean it from time to time.
This is an excerpt about it from the manual:
“REPLACE THE ADF PAD ASSEMBLY
The ADF pad will wear out and is designed to be a user-replaceable part. Problems with documents feeding into the ADF is an indication that the pad is wearing thin.
You received a replacement pad in the original scanner box, and you can also order a new one. See the “Visioneer Strobe 500 Scanner Parts List” on page 110 for ordering information.”
Hope that explains it.
Best of luck.
Strobe 500 demo YT final 0001.wmv
