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Fires caused by electrical appliances

account for some 10% of all household

fires, but result in only 6% of deaths. Electric

blankets and bed warmers cause 40% of

all the deaths in fires due to faulty electrical

appliances. The Code says that ‘use of

electric blankets, particularly by high risk

groups such as the elderly, increases the

justification for providing smoke alarms in

bedrooms’. As with smoking materials, by

the time an alarm in an adjacent area

detects smoke, it may be too late.

Finally, the new 2004 Code acknowledges

that there is a very worrying increase in the

incidence of arson, just as it did back in

1995. Malicious ignition is the second most

common source of ignition in all fires in

dwellings. Arson is particularly worrying in

multiple occupancy dwellings and the Code

stresses that the level of fire protection in

such places needs to be very high if there is

a significant risk of malicious fire-raising. It

even goes so far as to suggest installing

alarms near the door in case inflammable

materials are pushed through the letterbox.

WHO IS MOST AT RISK?

The occupants of a property are another

significant factor which needs to be

considered.

The Code acknowledges that elderly

people are at ‘significantly greater risk’

from fire than other age groups. For those

over 80, the probability of dying in a fire is

several times that for those aged from 30

to 59. Those aged between 60 and 80

are also at increased risk. Children under

five are at greater risk than adults.

For that reason, the Code recommends

greater levels of fire protection in

dwellings occupied by the elderly or

those with young children.

9

FIRE RISK - 

WHERE DO FIRES START?

J

ust over half of all fatalities occur in the

room where the fire breaks out; in HMOs,

this rises to 60%. The Code notes that, in

the United Kingdom, some 40% of all

fatal fires start in living rooms or dining

rooms, whereas 30% of fatal fires start in

bedrooms. For this reason, the Code

recommends that if alarms are to be

installed within rooms, the living room

and the dining room should be the first

priority. However, this consideration

could be reversed if the bedroom

presents a particular fire risk, such as the

occupant smoking in bed or using an

electric blanket.

The Code also specifically warns that

occupants – especially those asleep

and/or with a closed door between

them and the alarm - may not hear the

alarm in time. It stresses that it is

‘therefore essential that fire detection

and fire alarm systems are capable of

operating correctly when occupants

are asleep and are capable of rousing

occupants from normal sleep.’ This is

another reason why - if there is a

significant fire risk in a particular room -

consideration should be given to

installing alarms in that room - and

interlinking the entire system.

After kitchen fires and electrical

appliances and wiring, smoking

continues to be the next most common

cause of accidental fires in the home.

However, it is the number one cause of

fire deaths. Around 40% of all fire

deaths are caused through matches or

a discarded cigarette (the figure was

33% in1995 when the Code was first

published). In most cases, the item

ignited is bedding or furniture. If

occupants are known to smoke, there is

a greater need to install smoke alarms in

the living room or dining room areas. If

the occupants smoke in bed, the Code

suggests considering installing smoke

alarms in the bedroom itself. Ominously,

statistics reveal that - if such a fire begins

in a room where an occupant is asleep -

their chances of survival are greatly

reduced. By the time an alarm sounds in

an adjacent area, it may very well

already be too late.

Fires caused by space heating

appliances are also particularly life

threatening. After fires caused by

smoking and cooking appliances, these

types of fires account for more deaths

than any other cause - around 12% of

accidental fire deaths. These fires often

occur when something inflammable is

placed too close to the heater. The

Code suggests that, if portable heaters

or solid fuel fires are used at night, there

may be good justification for installing

smoke alarms in the relevant rooms -

particularly bedrooms.

MOST COMMON CAUSES OF ACCIDENTAL FIRES

Содержание Ei127

Страница 1: ...A Guide to Residential Fire Detection With Reference to BS 5839 Pt 6 2004 Ahead on Quality Ahead on Performance Ahead on Features 68 52 X...

Страница 2: ...SPECIALIST SUPPLIER Many years of experience in both its professional management and technical sales support teams coupled with a high standard of service and back up have enabled Aico to firmly estab...

Страница 3: ...he private or public sector all of whom were required to familiarise themselves with these important recommendations Landlords in particular needed to abide by these recommendations as legal liability...

Страница 4: ...t bearing on their performance as borne out by the Fire Statistics A badly installed alarm may have its reaction time cut in half offering occupants as little as 90 seconds or two minutes to get out B...

Страница 5: ...ng room CHANGES TO GRADES There is essentially no change to Grade F although a five year minimum battery life is recommended in tenanted properties along with a recommendation that the battery can onl...

Страница 6: ...of conducting current e g if the means of interconnection comprises radio communication rather than wiring OTHER ALARM TYPES For the first time BS 5839 Pt 6 now covers CO fire alarms and multi sensor...

Страница 7: ...and hostels are not included neither are caravans BS 5839 Pt 6 is primarily concerned with saving lives and reducing injuries However it does contain within it recommendations for helping to reduce pr...

Страница 8: ...nt if a fire does break out in that type of room ASSESSING FIRE RISK The Code discusses the generally relevant factors in carrying out a fire risk assessment to determine the most appropriate design o...

Страница 9: ...alled within rooms the living room and the dining room should be the first priority However this consideration could be reversed if the bedroom presents a particular fire risk such as the occupant smo...

Страница 10: ...o BS 5446 Pt 1 are recommended However these alarms do have serious drawbacks Occupants on a tight budget may not be able to afford to replace the batteries A significant number of tenants have also b...

Страница 11: ...the tripping of a protective device or even in some cases by the fire itself Householders may also disable them at the mains all too easily if false alarms are a problem MAINS POWERED SMOKE ALARMS WIT...

Страница 12: ...em Within the A F grades defined earlier the Code identifies three different categories of protection LD1 A system installed throughout the dwelling incorporating detectors in all circulation spaces t...

Страница 13: ...iteria cannot be met a Grade E or higher system should be installed Existing tenanted dwellings of two or more storeys should have Grade D systems installed From a landlord s point of view the case fo...

Страница 14: ...ikely that CO fire alarms have a significant role to play in domestic dwellings at present A Multi sensor alarm is defined in the standard as a fire detector that monitors more than one physical and o...

Страница 15: ...ceilings the horizontal distance from any point in the protected area to the detector nearest to that point should not exceed 5 3 metres for heat detectors and 7 5 metres for smoke detectors 15 SITIN...

Страница 16: ...ept for a dedicated monitoring device or a separate electrically protected regularly used local lighting circuit A Grade E system may only use the former option Hard wired interconnected smoke alarms...

Страница 17: ...re for the interconnect circuit The earth wire must not be used for the interconnect circuit The maximum recommended cable run is 250 metres with 1mm2 or 1 5mm2 cable Amendment No 2 to BS 7671 2001 al...

Страница 18: ...on normal smoke fumes or excessive dust Keep the smoke alarm at least 6m away from sources of smoke or vapours that may cause nuisance alarms Do not place Heat Alarms in any of the following areas bat...

Страница 19: ...he alarm will not function correctly with the cover in place Alternatively with Easi fit style alarms simply remove the detector head in the advised manner vi Do not paint an alarm or allow paint to c...

Страница 20: ...to outlast the life of the alarm Safety The cells have been tested and approved by the British Standards Institute and Underwriters Labs Inc USA for use in this application They have also been compre...

Страница 21: ...esigned to outlast the alarm life expectancy of cells endorsed by Panasonic Kitemarked to BS 5446 Pt 2 2003 Ei166 Optical With Hush More responsive to slow smouldering fires Advanced suppression and c...

Страница 22: ...Held Same features as the Ei411 but is a key fob size designed for personal use Ei407 Wireless Manual Call Point Allows manual testing of the system Allows manual alarm to warn other occupants Same si...

Страница 23: ...acility Alarm clock input Can be used with RadioLINK Ei169 Control box with integral strobe vibrating pad and cable for connections for use with the 150 series alarms not supplied EI169 160 As above f...

Страница 24: ...or constant or pulse operation Features rechargeable lithium back up cells with 10 yr life Ideal for signalling to devices not affected by a mains failure such as Warden Call Systems MODIFIRE A Modifi...

Страница 25: ...watts and flash frequency of 9Hz Clear or red lens options For operation via an Ei158R or Ei128R relay Suitable for use with Modifire SABV4 High Intensity Strobe Xenon Beacon Mains powered Ideal for u...

Страница 26: ...d of mains and battery powered Carbon Monoxide alarms Please contact us for more information SAT332 Smoke Alarm Tester This useful device used in conjunction with an SAA300 aerosol of synthetic smoke...

Страница 27: ...r will flash rapidly only on the unit which is the source of the alarm Press hush button if fitted Check for fumes steam etc from the kitchen or bathroom paint and other fumes can cause nuisance alarm...

Страница 28: ...tinuous development we reserve the right to amend designs and specifications without prior notice Every care has been taken to ensure that the contents of this document are correct at the time of publ...

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