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Residential Fire Safety Fire Safety Around the Home Fire starting in the Home Below are incidents that are classed as fires caused by electrical faults
Reduction in the risk to you and your family can be made by turning off appliances and not leaving them in standby mode. Also the installation of circuit breakers on the electrical circuits will protect against some overloads. The old fuse types can allow cabling and connections to catch fire, as they do not limit the current available on a short or fault. Progress of a residential fire that has not been deliberately started.
Source of ignition (electrical fault) The smoke given off by today's furniture and room fittings contain high levels of toxic gases, it is these gases that actually cause the fatalities. A fire may smoulder for over an hour before getting to the stage of roaring flames, and it is during this smouldering stage the smoke will first rise to the ceiling and gradually drop down until it is the air that you are breathing and you will not wake up. Domestic smoke alarms, the common fatal mistakes. There have been no deaths in commercial buildings in Queensland in the past 10 years, all deaths have occurred in residential or semi residential buildings. I have installed some battery smoke alarms in my house so my family and I are safe. Incident Brisbane June 2002 The family have had the evening meal, mum and dad have had two glasses of wine, the children age 1 to 10 have soft drink and a good meal. The family watch TV and about 9 pm go off to bed. The TV has been left in standby mode and is a few years old. The circuit card in the TV has dust on it and this heats up generating a smouldering fire. The smoke drifts up from the family room into the hallway and about 11 pm sets off the hallway smoke alarm. Children between the ages of 1 and 15 will not wake with any alarm sound. The smoke drifts into the bedrooms and after a further hour the neighbours wake to the smell of smoke and raise the fire brigade. The house is not involved in a roaring fire but mum, dad and the kids have been killed by the smoke. How can I safeguard my family from smoke? If you have a siren or horn speaker right outside of the parent's main bedroom, then either you or your neighbours will hear the alarm. Minium Installation Have your electrician install 240-volt optical smoke alarms with a relay output that allows connection to a security system. Install a security system that has an external siren that can be mounted under the eaves of your house next to your main bedroom window. Enhanced installation
Have the security system monitored by a security company, so that if the smoke detector goes off they will respond with a patrol within 10 minutes. Studies Raise Concerns Bruck, a psychologist at Victoria University in Australia, was the first to identify the problem. In her 1999 study published in the Fire Safety Journal, Bruck tested 20 children between the ages of 6 and 17 to determine their response to a 60-decibel alarm sounding at their pillows. She conducted her test twice and found 17 of the children slept through one or both tests. Two of the three who woke were 16 and 17 years old, among the older children in the sample. Indeed, for the children 15 and under, the reliable waking rate was only 5.6 percent. In contrast, Bruck found all of the parents woke when the alarms sounded. In subsequent research, Bruck's findings further complicated the issue: simply installing an alarm in a child's room is unlikely to solve the problem. In a presentation to the fourth Asia-Oceania Symposium on Fire Science and Technology in 2000, Bruck and fellow researcher Angela Bliss reported their findings from a study of 28 children between the ages of 6 and 15. In two tests, the children were exposed to an 89-decibel alarm; half slept through one or both tests. Among the 6 to 10 year olds, that percentage climbed to 71 percent. When children did wake, they were groggy for several minutes, a factor that might well have impaired their ability to make life-saving decisions in a true emergency. While adults and fire protection experts may be surprised by those numbers, kids themselves might not be. Derrick Ethridge, fire prevention officer for the Loyalist Township Emergency Services in Ontario, Canada, decided to study the issue of audibility when children in the schools he visits told him they didn't think they'd hear an alarm if it went off. "They kept telling me 'I don't think I'd hear it,' or 'I sleep with my door closed,' or 'I don't think I'd wake up,' " he recalls. "I suspected there was a problem just on the basis of what the kids were telling me, and I wanted to find out if that was true." With the help of Professor Alistair MacLean of the Queens University Sleep Lab, the Canadian Hearing Society, the Limestone and Algonquin school boards, and the parents of 222 Loyalist Township sixth graders, Ethridge decided to conduct an experiment. Parents were asked to activate the smoke alarms outside their sleeping children's bedrooms between 9 and 11 p.m. on two separate nights in April 2002 and time how long it took the children to awaken. Tests were conducted once with the door closed and once with it open. The children knew they'd be tested but didn't know when. The team found 31 percent of the children didn't wake up at all when the smoke alarm was activated, and 53 percent didn't react within the first minute. Ethridge later conducted random audibility tests of 22 of the homes. Testing once with the bedroom door open and again with it closed, he found audibility in some cases dipped as low as 64 decibels. "Some parents wrote back, 'I took the damn smoke alarm off the ceiling, put it over my kid's head and he didn't move.' Or they said the alarm rang until the batteries were dead, and the child never woke up," he says. "They were definitely concerned." As disconcerting as research such as Bruck's and Ethridge's may be, it must be considered in light of overwhelming data demonstrating smoke alarms' proven benefit. Since the early 1970s, when smoke alarms made their way into homes, residential fire deaths have been cut in half. Homes with smoke alarms - operational or not - have a death rate 40 to 50 percent lower than the rate for homes without alarms, says Fahy. Today, the overwhelming majority of fatalities take place in homes that aren't equipped with alarms or in homes where the equipment is broken, dismantled, or missing a battery. Half of the people killed in home fires each year die in the 6 percent of homes that don't have smoke alarms. Of the fatalities that do take place in homes equipped with alarms, half occur in cases in which the smoke alarm doesn't sound |
Aspirating Addressable Smoke Detection 
