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Further evidence of the vital importance of

smoke alarms comes from American

studies. In American States where

residential fire protection is mandatory,

some 92% of homes have the required fire

alarm systems. 50% of ALL the fire deaths

which occur happen within the 8% where

no alarms are fitted.

BS 5839: Pt.6: 2004 itself says:

“It has been estimated that, in dwellings

without smoke detectors, a substantial

proportion of the fatalities from fire could be

avoided if smoke detectors were installed”

SMOKE ALARM

PERFORMANCE

In 34,450 fires in 2003, no smoke alarm

was present in the fire area. 261 people

died in these fires, and a further 6,100

were injured.

In the cases where an alarm was present,

the alarm operated correctly in 18,821

cases (29% of dwelling fires), operated but

failed to raise the alarm in 3,100 cases

(5%) and failed to operate altogether in

7,445 cases (12%).

SMOKE ALARM RELIABILITY

It is worth quoting the Fire Statistics in detail

here. The report notes that, in those

dwellings subject to a fire in 2003, alarms

failed to operate in 12% of cases: 

“However, this overall figure masks a wide

difference in performance between battery

powered alarms and mains powered alarms

– 40% of all battery powered smoke alarms

failed in 2003 compared to just 13% of mains

powered alarms.”

The Report goes on to clarify:

“The main reason for smoke alarm failures

each year is missing or flat batteries. In 2003

they accounted for 63% of failures in battery

powered alarms. The main reason for failure

of mains powered alarms was that the fire

products did not reach the detectors (43% of

cases)”.

The message is still all too clear: it’s vital to

select, properly install and adequately

maintain the best, most reliable smoke

alarms possible - and to have both

adequate back-up and measures for

preventing tampering with alarms.

BATTERY POWERED ALARMS

The high failure rate of alarms with

replaceable batteries  is truly frightening.

Landlords relying on battery powered alarms

to protect tenants cannot be there all the

time to check that batteries are present and

working – but responsibility still lies with them.

Essentially, the time when a smoke alarm

with a replaceable battery was considered

adequate has long passed. BS 5839: Pt.6

itself recognises that, while they save lives,

they are all too vulnerable to tampering to

offer landlords much of a defence under

‘duty of care’. It is no surprise to learn that,

when one Council made an inspection of its

properties fitted with battery units, it found

that in excess of 50% of them were

‘defective’ in some way, due mainly to

neglect or from removal of the batteries.

COVERAGE

Inadequately or improperly installed fire

alarms can have a significant 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. By this time, routes of

escape may have become impassable,

forcing people to jump from high windows.

Or flames may have reached them.

An incorrectly installed fire alarm may

again leave landlords in both the private

and public sector vulnerable to

compensation claims from injured

tenants or from families of victims.

After one such fire tragedy in which a

tenant died, one local authority found that

the compensation it had to pay out, plus

the cost of litigation, far exceeded the cost

of installing quality fire alarms in every

single council property in their area. To a

private landlord without the resources of a

local authority, such a compensation pay

out could have been completely ruinous.

The message of BS 5839: Pt.6 is therefore

to not only install an adequate number of

smoke alarms, but to ensure that they are

installed and maintained correctly in

every respect.

FIRE SAFETY - THE STATISTICS

According to the latest UK figures the

majority - over three quarters - of all fire

casualties occur in the home.

Until the introduction of BS 5839: Pt.6,

business and commercial premises were

the subject of far more stringent fire

safety regulations than residential

dwellings. BS 5839: Pt.6 was introduced

to start redressing the balance.

Every year around 450 people die in fires

in this country, and close to 13,000 are

injured. The death toll is reducing and

this is acknowledged to be directly

related to increasing and more

professional use of smoke alarms. At the

time of the introduction of BS 5839 in

1995, we were talking around 600 deaths

and 15,000 annual injuries.

A brief look at ‘Fire Statistics United

Kingdom, 2003’, published by the Office

of the Deputy Prime Minister in March

2005, provides an invaluable insight into

incidents of dwelling fires and the

effectiveness of smoke alarms.

•  In 2003, dwelling fires fell to 63,800. The

number of accidental dwelling fires also

fell to 50,000 – the lowest figures for more

than a decade

•  However, around 80% of all fire-related

casualties occur in dwellings

•  In 2003, 447 people lost their lives in

fires in the home. (That compares with

430 in 2002 and 483 in 2001)

•  12,600 people were injured, a

reduction of 7% compared with 2002

MORTALITY STATISTICS

•  In 2003, 68 people lost their lives in fires in

homes where an alarm was present,

operated and raised the alarm

•  In comparison, in the same period, 379

people died in homes where either an

alarm was not installed or an alarm was

present but failed to raise the alarm

The report suggests that 76% of households

now have alarms, so the huge difference in

death rates is strongly indicative not only of

the need for smoke alarms, but also smoke

alarms which work when they are needed.

Summary of Contents for Ei127

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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