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10

People with impaired mobility require

more time to escape. They need the

earliest possible warning of a fire and

greater alarm coverage. The hearing

impaired also have very particular

needs, and these are dealt with later in

this document.

It is obvious to any landlord - in the

public or private sector - that those

judged to be most at risk and in need

of a high level of protection are those

who form a typical cross section of

their tenants.

PROPERTY PROTECTION

BS 5839: Pt.6 also adds other

considerations for the protection of

property. However, it stresses that only in

exceptional circumstances, for example

in a house of historical importance

where no-one sleeps, should the

principle objective of a fire detection

system ever be the preservation of

property rather than lives.

If property damage is the decisive

factor, the Code recommends

installing a system which results in the

fire brigade being called early enough

to limit property damage.

As a fire that starts anywhere will cause

damage, consideration should be given

to providing detectors in some or all

rooms of the building. Coverage in

circulation areas alone is unlikely to be

adequate. Once again, areas with a

statistically greater fire risk, such as

kitchens and boiler rooms, where likely

sources of ignition are present, should

have priority for detectors.

Property damage should, of course,

never be a deciding factor for a

landlord, but it is worth bearing in mind

not only the human cost but also the

financial cost of a fire breaking out in

a property. Insurance premiums may

rise, renovation costs may be

expensive and revenue from the

property will be lost while it is being

made habitable, to say nothing of the

cost of re-housing tenants. Once

again, the cost-effectiveness of a

quality fire alarm system offering the

earliest possible warning is self-evident.

TYPES OF ALARM

TECHNOLOGY

The next issue raised by the Code is

the types of alarm available.

BATTERY OPERATED

SMOKE ALARMS - GRADE F

BS 5839: Pt.6 acknowledges the

advantages of the single, battery

operated smoke alarm. They’re

simple to install and offer protection

at very low cost. Battery operated

smoke alarms conforming to 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 been shown to remove the

batteries to prevent false alarms or

to use in other battery powered

devices and then forget to replace

them. For this reason, the Code

recommends that these alarms

should not be used to protect

tenants in properties of more than

one storey – and even then the

batteries should be sealed-in and

have a life in excess of 5 years.

As an aside, landlords have now

been found liable in cases where

tenants themselves have disabled

an alarm. For this reason, it is

unlikely that landlords will be able

to trust tenants to adequately look

after the alarms. The Code

highlights the fact that battery

powered alarms are only suitable

for owner-occupied properties if

the likelihood is that batteries will

be replaced within five days of a

low battery signal.

Interestingly, the Code acknowledges

that people on a low income are

more at risk than other groups, which

is borne out by statistics from the

British Crime Survey. They may not be

able to afford to replace batteries in

smoke alarms and the Code

consequently points out that ‘a more

reliable power supply for the fire

detection and alarm system is

essential’. This worry, coupled with the

fear of alarms being cut off to poorer

residents along with their electricity

supply, permeates the entire

document and needs to be stressed.

People living in a house in multiple

occupation are between eight and

ten times more likely to die in a fire

than those in single family homes, it

has been estimated. However, the

Code distinguishes between

properties commonly designated as

HMOs. On the one hand, a family

living with a lodger might not be

classed as an HMO as the fire risk may

be no greater than a normal dwelling.

It identifies the greatest risk in houses

converted into bedsits and to elderly

people in sheltered accommodation.

Generally, the risk is also greater if the

property exceeds two storeys in

height. Here the Code recommends

“where the risk in an HMO is relatively

high, it is essential that there is

protection by a highly reliable fire

detection and fire alarm system. It is

also essential that a warning is given

in the event of a fault that impairs the

standard of protection”.

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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