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Posts Tagged fire risk assessment
selecting the right Smoke Alarms, grades and categories, and what do the Building Regulations demand
Posted by the electrician in ask Mr Sparks, fire alarms, standards and regulations, technical data, website update on May 27, 2010
Continuing the Aico Tips fitting a smoke alarm into a domestic dwelling, please find below the initial tips for how you should select the correct fire detection system – the Grades and Categories defined by the Building Regulations(including some examples of various Domestic Properties), and What do Building Regulations Demand in Northern Ireland, Scotland, and England?
Grades and Categories of Fire Detection Systems
Six different grades of fire detection systems are defined in the British Standard BS 5839: Part 6: 2004 and generally speaking the greater the fire risk the more sophisticated the system should be. Briefly, the Grades are as follows:
- Grade A: A full system with control and indicating equipment installed to BS 5839: Part 1;
- Grade B: Detectors and sounders using simpler specified equipment;
- Grade C: Detectors and sounders or alarms with central control;
- Grade D: Mains powered alarms with an integral stand-by power supply;
- Grade E: Mains powered alarms with no stand-by power supply;
- Grade F: Battery powered alarms;
Three different categories of life protection systems are defined. Briefly these are starting at the highest:
- LD1: Alarms in all circulation spaces that form part of escape routes and all areas where a fire might start, but not bathrooms, shower rooms or toilets.
- LD2: Alarms in all circulation spaces that form part of escape routes and rooms or areas that present a high fire risk.
- LD3: Alarms in circulation spaces that form part of escape routes.
BS 5839: Part 6: 2004 emphasises that no one type of fire detector is most suitable for all applications. Consideration must be given to the most suitable type of detection – optical detector, ionisation detector, and heat detector.
Examples of various Domestic properties
Existing Tenanted Properties
Two and three storey – Grade D, LD3
- Mains alarms with battery back-up;
- Optical alarms in circulation spaces – hallways and landings;
- If a fire risk assessment shows the property or occupier to be a high fire risk, increase the number of alarms installed to meet the risk – e.g. follow recommendations for an LD2 installation;
- All alarms must be interconnected;
- The sound pressure level of the alarm signal measured at the doorway of each bedroom with the door open should be at least 85dB (A). This is the definitive guidance to which Architects, Building Professionals, Enforcing Authorities, Landlords and Installers should refer for recommendations on the design, installation and use of smoke and heat alarms in the majority of domestic dwellings. Landlords in both the public and private sector are considered to have a Duty of Care to fit compliant smoke and heat alarm systems.
Existing Tenanted Properties
Single storey – Grade F, LD3
- Battery powered with a minimum battery life of 5 years;
- Optical smoke alarm in circulation spaces – hallway;
- If a fire risk assessment identifies a concern that the occupier cannot or may not replace a battery, use mains alarms or mains with battery back-up
- If a fire risk assessment shows the property or occupier to be a high fire risk, increase the number of alarms installed to meet the risk – e.g. follow recommendations for an LD2 installation.
What do Building Regulations Demand?
Architects, builders and installers must comply with Building Regulations and install mains powered alarms in new and materially altered dwellings.
Grade D, LD3
- Mains alarms with battery back-up with the mains supply taken from a lighting circuit or a dedicated circuit from the distribution board
- Smoke alarms are required in the circulation spaces such as hallways and landings. In general optical alarms are recommended Heat alarm to be installed in the kitchen where there is no door separating the kitchen from the circulation space;
- Smoke and heat alarms must be interconnected;
- Alarms may be interconnected using radio-links.
Northern Ireland
Building Regulations (Northern Ireland) Technical Booklet E (Fire Safety) requirements were amended in June 2005 to:
Grade D, LD2
- Mains alarms with a battery back-up;
- Smoke alarms are required in the circulation spaces, hallways and landings;
- A smoke alarm is required in the ‘principal habitable room’ e.g. living room;
- A heat alarm is required in every kitchen;
- Loft conversions require all the above to be installed;
- Smoke and heat alarms must be interconnected;
- Alarms may be interconnected using radio-links.
Scotland
Building Standards Technical Handbook No 2 (Fire) requirements are currently:
Grade D, LD3
- Mains smoke alarms with battery back-up;
- Smoke alarms are required in the circulation spaces, hallways and landings;
- Smoke and heat alarms must be interconnected;
- Alarms may be interconnected using radio-links.
England & Wales
Building Regulations Approved Document B (Fire Safety) minimum requirements are currently Grade D, LD3, but it also defines that installation should be to BS 5839 Pt.6 and therefore Grade D, LD2 is recommended.
This article is similar to & continuing the thought of the Standards and Regulations for the Smoke and Heat Alarms and the Standards and Rules for the Fire Alarms, dealing with the Domestic Fire alarms from Aico(and not only).
Tips for Home Fire Safety, Electrical Appliances at Home and Fire Safety Tips
Posted by the electrician in ask Mr Sparks, customer service, fire alarms, in-house announcements, standards and regulations, technical data on April 17, 2010
In 2007, Government statistics showed that over 43,000 fires started by accident in UK homes were reported to the Fire and Rescue Service. A recent Government survey of houses in England recognised that fires reported to the Fire and Rescue Service only represented about a quarter of all fires in homes. The truth is that most of us take electricity for granted. We use it every day and forget that it can be dangerous if we do not treat it with respect. Of reported fires, over 19% are caused by electrical faults and a further 25% are caused by people not using electrical equipment and appliances properly. So, it is important that we do all we can to reduce the risk of a fire in our home caused by an electrical problem. The tips below are taken from the NICEIC guide to Fire Safety(taking care of your electrical appliances and wiring for reducing the fire hazards).
Things you can and should do - for your fire safety
- Find out how old your wiring is, and get the installation checked at least every 10 years and when you move into a new home. If you rent your home, the electrical installation and appliances provided are the landlord’s responsibility. Ask to see a copy of the certificate or report confirming that the installation meets the UK national standard BS 7671 (Requirements for Electrical Installations) and is safe to use.
- Check your sockets regularly – if you see burn marks or they feel hot, get a registered electrician to check if they need repairing or replacing.
- Turn off any electrical appliances that you are not using, particularly at night, when a fire can spread quickly and cause more damage.
- Check flexible cables to appliances regularly for damage, such as fraying and wear and tear to confirm that you can keep using them. Also check to see that the cable is fastened securely to the plug. You should always carry out these checks before you plug the appliance in.
- Be careful when using hand-held electrical appliances and make sure that you switch them off and unplug them when you have finished using them. This is particularly important with items that get very hot such as hair dryers and curling tongs which, if you leave them on, can easily cause any flammable material that they are in contact with to catch fire.
- Check the current rating of an electrical adaptor before you plug appliances in and always make sure that the total current used by the appliances are not more than the adaptor’s rating.
Things you can but shouldn’t do – Don’t Do this
- Don’t overload electrical adaptors by plugging too many appliances in to one socket especially appliances with a high electrical current such as kettles, irons and heaters. It is much better to have extra sockets installed by a registered electrician.
- Don’t put electric heaters near curtains or furniture, or dry clothes on them.
- Don’t cover the air vents on storage heaters or fan heaters.
- Don’t trail flexible cables under carpets or rugs.
- Don’t use a bulb with a higher wattage than the one printed on the light fitting or lamp shade you are using.
Fire Safety and the Cooking appliances
Government statistics show that the largest number of reported fires caused by accident in the home, almost 11,500 each year, are caused by people misusing electrical cooking appliances, including microwaves. So you need to take special care in your use / handling of the electrical appliances in your kitchen in order to reduce the chance of a fire being caused by these.
Simple tips for your fire safety:
- Don’t let leads from other appliances, like kettles or toasters, trail across the cooker;
- Never dry towels on, or near, the cooker;
- Don’t let fat and grease build up on the cooker, especially in the grill pan where it can easily catch fire;
- Please make sure that you turn the cooker off when you have finished using it.
Fire Safety and the Smoke Alarms
If a fire starts in your home, a smoke alarm will give you valuable time. You are more than twice as likely to die in a house fire if you do not have a working smoke alarm. Modern alarms are neat and tidy, cost less than ever, and are easy to fit. In certain circumstances, your local fire and rescue service may install one for you, for free as part of a free home fire risk check.
Read more online about the Fire Risks + Fire Dangers Prevention in homes:
- Fire Kills – prevent it! Don’t drown in toxic smoke;
- Fire Safety in the Homes and in Communities;
- The 7 recommended stages in Fire Design;
- Fire Safety in homes – the NICEIC recommendations;
- Smoke Alarms for Homes and Communities;
In 2007, Government statistics showed that over 43,000 fires started by accident in UK homes were reported to the Fire and Rescue Service. A recent Government survey of houses in England recognised that fires reported to the Fire and Rescue Service only represented about a quarter of all fires in homes.
Most of us take electricity for granted. We use it every day and forget that it can be dangerous if we do not treat it with respect. Of reported fires, over 19% are caused by electrical faults and a further 25% are caused by people not using electrical equipment and appliances properly. So, it is important that we do all we can to reduce the risk of a fire in our home caused by an electrical problem.
Things you can and should do – for your fire safety:
- find out how old your wiring is, and get the installation checked at least every 10 years and when you move into a new home. If you rent your home, the electrical installation and appliances provided are the landlord’s responsibility. Ask to see a copy of the certificate or report confirming that the installation meets the UK national standard BS 7671 (Requirements for Electrical Installations) and is safe to use.
- check your sockets regularly – if you see burn marks or they feel hot, get a registered electrician to check if they need repairing or replacing.
- turn off any electrical appliances that you are not using, particularly at night, when a fire can spread quickly and cause more damage.
- check flexible cables to appliances regularly for damage, such as fraying and wear and tear to confirm that you can keep using them. Also check to see that the cable is fastened securely to the plug. You should always carry out these checks before you plug the appliance in.
- be careful when using hand-held electrical appliances and make sure that you switch them off and unplug them when you have finished using them. This is particularly important with items that get very hot such as hair dryers and curling tongs which, if you leave them on, can easily cause any flammable material that they are in contact with to catch fire.
- check the current rating of an electrical adaptor before you plug appliances in and always make sure that the total current used by the appliances are not more than the adaptor’s rating.
Things you can but shouldn’t do – Don’t Do this:
Don’t overload electrical adaptors by plugging too many appliances in to one socket especially appliances with a high electrical current such as kettles, irons and heaters. It is much better to have extra sockets installed by a registered electrician.
Don’t put electric heaters near curtains or furniture, or dry clothes on them.
Don’t cover the air vents on storage heaters or fan heaters.
Don’t trail flexible cables under carpets or rugs.
Don’t use a bulb with a higher wattage than the one printed on the light fitting or lamp shade you are using.
Fire Safety and the Cooking appliances
Government statistics show that the largest number of reported fires caused by accident in the home, almost 11,500 each year, are caused by people misusing electrical cooking appliances, including microwaves.
So you need to take special care in your use / handling of the electrical appliances in your kitchen in order to reduce the chance of a fire being caused by these.
Simple tips for your fire safety:
Don’t let leads from other appliances, like kettles or toasters, trail across the cooker;
Never dry towels on, or near, the cooker;
Don’t let fat and grease build up on the cooker, especially in the grill pan where it can easily catch fire;
Please make sure that you turn the cooker off when you have finished using it.
Fire Safety and the Smoke Alarms
If a fire starts in your home, a smoke alarm will give you valuable time. You are more than twice as likely to die in a house fire if you do not have a working smoke alarm. Modern alarms are neat and tidy, cost less than ever, and are easy to fit. In certain circumstances, your local fire and rescue service may install one for you, for free as part of a free home fire risk check.
Fire Detection & Alarm Systems BS5839, fire risk assessment & system zoning, Rafiki
Posted by admin in ask Mr Sparks, customer service, fire alarms, standards and regulations, technical data on June 11, 2009
A fire risk assessment should identify:
- Possible hazards;
- Sources of ignition;
- Persons at risk of fire;
- Means of escape;
- Fire detection and alarm systems;
- Fire fighting facilities;
- Routing procedure in the event of fire;
- Any difficulties with the above – and plans to put them right.
Fire Detection & Alarm Systems BS5839 – Risk Assessment
- The ‘Fire precautions (Workplace) Regulations’ require any business employing five or more persons to hold a written ‘Fire Risk Assessment’ and ‘Emergency Plan’. This must be periodically reviewed.
- The local fire brigade can enforce compliance, and close any building that does not meet this act.
- In the event of a fire in a building without a written ‘Fire Risk Assessment’, those responsible may face fines and imprisonment, and/or private litigation.
The Law requires you to
- Complete a fire risk assessment for your work place (considering all employees, the public, disabled people and people with special needs).
- Identify and record any significant findings or persons at risk.
- Provide and maintain fire precautions.
- Provide information, instruction and training.
- Nominat e persons responsible to implement your emergency plan.
- Consult employees about the above nominations and your proposals to improve fire precautions.
- Inform other employees who may have work places in the building about any significant risks which may affect their safety and co-operate with them to reduce/control these risks.
- If you are not an employer, but control premises which contain more than one workplace, you are responsible for complying with fire regulations.
- You must establish a suitable means of contacting the emergency services.
- Your employees must co-operate to ensure the workplace is safe from fire and its effects.
Fire Risk Assessment – System Zoning Information
In order to aid identification of the source of a possible fire, the protected building should be divided into ‘zones’. When deciding on a suitable zoning scheme for a building, consideration should be given to the size, any existing fire routines, escape routes, zone accessibility, and structural fire compartmentation.
The following guide lines should be observed:
- If the total floor area of the building is less than 300sqm then the building needs only one zone, regardless of the number of storeys.
If the total floor area is greater than 300 sqm: - The maximum area for a zone is 2000sqm.
- If a stairwell (or similar) extends beyond one floor it should be a separate zone.
- If a zone covers more than one fire compartment then the zone boundaries should follow the compartment boundaries.
- The search distance within the zone in order to ascertain the position of the fire should not exceed 60m. Remember that the use of Remote Indicator lamps may help to reduce the distance traveled.
- If a building is divided between occupiers, zones must not be shared between them.
These are some of the guidelines provided by Rafiki(intelligent fire technology) – check out the Rafiki series of industrial/commercial fire alarm systems (like the Rafiki Twinflex), found at The Conventional and Analogue Fire Alarms. For more details about the fire alarms, visit the Fire-Detect website(see a list of articles about the fire alarms here and here).
Frequently Asked Questions – Aico Mains Powered Smoke, Heat and RF Alarms
Posted by sparksdirect in ask Mr Sparks, fire alarms, technical data on May 7, 2009
There is a full presentation of the Aico fire alarms, smoke alarms, heat alarms, optical alarms, multi-sensor alarms, ionisation alarms and CO alarms on our sister website – fire-detect.co.uk, including explanations about the RadioLINK system, some Rules and Regulations and Standards related to the fire alarms, the Aico EasiFit technology, the Aico System solutions, or the Ei140 and Ei160RC series from Aico. Besides these, Aico provides a series of Frequently Asked Questions concerning the Mains Powered Smoke, Heat and RF alarms and the RadioLINK technology, which can be helpful in deciding which fire/smoke/heat alarm to be used, how to install, and other practical aspects.
Frequently Asked Questions related to the Aico Mains Powered Smoke, Heat, and RF Alarms
- What are the fire alarm requirements for New – Build properties?
- What is a Grade D system?
- What do LD2 and LD3 mean?
- What are the requirements for existing properties?
- What is a Fire Risk Assessment?
- If I install an LD2 level of cover can this remove my responsibilities to conduct a Fire Risk Assessment?
- What do I need to do to address the requirements of ‘special needs’ people or groups?
- What types of sensor are available?
- How do Aico Ei Ionisation and Optical Smoke Alarms work?
- What are the advantages and disadvantages of both sensor types ?
- How do Aico Ei Heat Alarms work?
- Which Alarm should I use where?
- Where should alarms be sited?
- How many do I need?
- Where shouldn’t the Aico Smoke Alarms be sited?
- Will they always work?
- What cable do I need for the Aico Mains connections and where should the supply be taken from?
- What cable do I need for the interconnect line?
- How do I mount the Aico Alarms on the ceiling?
- Can I fit the Aico Smoke or Heat Alarm on the wall?
- How many Aico Smoke and Heat Alarms can I link together?
- Can I use a relay to signal other devices?
- Can I use the relay to connect to a 24 Volt Fire Alarm System?
- How often should they be tested?
- Should they be tested with smoke/heat?
- What maintenance schedule is recommended?
- How long will the battery last?
- How will I know if the battery has failed?
- How long do Aico Smoke Alarms last?
- How do I stop nuisance alarms?
- What is the radiation risk from Aico Ionisation Smoke Alarms?
- How do I dispose of redundant Aico Ei alarms that contain a NiCad battery?
- Are the Aico Ei alarms with rechargeable Lithium Cells compatible with previous models?
- Why choose Aico Ei Professional Smoke Alarms?
We will continue to deal with these questions one by one, trying to find out more details concerning these questions(you’ll also find them here). To view the available domestic fire alarm systems, visit the Fire and Security section, Fire Alarms, Domestic Fire / Heat Alarms, where you can find an up-to-date selection of Aico smoke alarms, Aico Heat alarms, Aico CO alarms, etc. – buy online Aico fire alarms via SparksDirect.co.uk. This FAQ can also be found online here, here and on the sparksdirect blog. To help you in your choice of the domestic fire alarms, we also recommend the Domestic alarm selector, choosing what alarms to fit and where, based on BS 5839-6:2004.
