Fire Safety Flashcards

1
Q

What is the Regulatory Reform (fire safety) Order 2005?

A
  • Charges responsible person (s) in control of the non-domestic premises to keep those safe who use the building whether they are employees or visitors.
  • Responsible person must carry out fire safety risk assessment (and keep up to date), based on findings they must ensure that adequate and appropriate safety measures must be put in place to minimise the risk of injury or loss of life in the event of a fire.
  • Responsible person(s) is also required to:
  1. Have correct fire fighting equipment.
  2. Keep sources of ignition and flammable substances apart.
  3. Training.
  4. Good housekeeping - avoid build up of flammable rubbish e.g paper waste.
  5. Review and update risk assessment regularly.
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2
Q

How has the Regulatory Reform (fire safety) order been updated?

A

The Fire Safety Act 2021

  • It clarifies who is the responsible for managing and reducing fire risks in parts of multi-occupied residential buildings.
  • Was created in response to Grenfeld fire tragedy.
  • Applies to buildings that are at least 18m in height or have at least 7 storeys and at lease two residential units.
  • It extends the provisions of the Regulatory Reform (fire safety) order 2005 to the building’s structure, external walls and anything attached to the external walls including cladding, balconies. Also now includes the all doors between the domestic premises and the common parts - the front doors of flats (fire doors) that lead onto escape routes.
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3
Q

What is a EWS1?

A

An EWS1 certificate is an External Wall System Fire Review certificate. They come into play when a leaseholder is buying or selling or re-mortgaging an apartment in a multi-storey multi-occupied residential building. It is not a building safety certificate or a legal requirement. It is a mortgage valuation tool.

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4
Q

What is PAS 9980:2022?

A
  • Provides a methodology for the fire risk appraisal of external wall construction and cladding of existing multi-storey and multi occupied residential buildings.
  • It to be used by competent fire engineers and other competent building professionals.
  • It applies where there is a risk of fire spread from the form of building construction such as combustable materials and helps to inform the fire risk assessment.
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5
Q

What’s the difference between a smoke seal and an intumescent strip?

A
  • Intumescent strips swell up when exposed to heat and blocks off the fire itself.
  • Smoke seals block off the smoke – protecting you from smoke inhalation
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6
Q

What are do you consider when designing a fire escape route for a building?

A
  • Fire doors
  • Exit signage
  • Travel distances
  • Class 0 surfaces
  • Fire detection system
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7
Q

What is the title of document B ? How many volumes are there and what are they called ?

A
  • Fire Safety
  • • Volume 1 – Dwellings
    • Volume 2 - Building other than dwellings
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8
Q

What should a fire door have?

A
  • Should be appropriately fire rated and the associated frame should have the same fire rating!
  • Should open in the direction of escape if more than 60 people are anticipated to be using the escape route.
  • Intumescent strip and cold smoke seal fitted to the tops and side of the door leaf or the frame itself.
  • Door closer.
  • 3 sets of fire rated hinges to each door.
  • Vision panels formed of fire rated glass (if the fire doors on escape routes divides corridors or the door is hung to swing both ways)
  • Gap between door and frame should be 2-4mm.
  • Fire door signs should be fitted to both sides of the door.
  • Fire door retainer (dorgard) can be installed to legally hold open the fire door - the system holds the door open but will automatically release in response to the sound of a fire alarm.
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9
Q

How do you tell if a door is a fire door?

A
  • Solid core - can tell when knocked.
  • All fire doors must have a label to the top edge of the door leaf stating the company name, fire certificate number, unique sequential number, company’s phone number and the FD rating.
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10
Q

What is the main difference between a FD30 and a FD60 door?

A
  • FD30 - usually solid softwood core and 44mm total thickness.
  • FD60 - usually solid hardwood core and 54mm total thickness.
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11
Q

How should penetrations of services be dealt with with regards to fire safety?

A
  • Section 10 of Approved Document B has three options: use a proprietary, tested sealing system that will remain the same fire resistance of the wall, floor or cavity barrier, fire stop around the pipe, or use a sleeve formed of metal such as lead, aluminium.
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12
Q

What regulations / standards refer to emergency lighting?

A
  • Regulatory Reform (fire safety) order 2005 - businesses must install EL.
  • BS EN 1838: 2013- specifies escape and standby lighting requirements for businesses in the event of a power failure.
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13
Q

What are the travel distances for Office, Industrial and shops / commercial properties?

A
  • Office - 18m one direction only and 45m where more than one direction.
  • Industrial - 25m one direction and 45m where more then one direction.
  • Shop and commercial property - 18m one direction only and 45m where more than one direction.
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14
Q

What are the minimum lux values in accordance with BS 1838:2013 (emergency lighting)?

A
  • -Escape routes up to 2m width - minimum 1 LX.
  • High risk areas (working with tools / operating machinery) - minimum 15 LX.
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15
Q

What are the different types of emergency lighting?

A
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16
Q

What are the different types of fire alarm? What document would you reference to ensure compliance?

A
  • BS 5839-1:2017 - Fire detection and fire alarm systems for buildings. Code of practice for design, installation, commissioning and maintenance of systems in non-domestic premises.

Standards give description of main categories for fire alarm systems but systems are usually a mixture e.g category M (call points) and category L2 system.

  • Category M systems: Manual systems and therefore have no automatic fire detectors - call points located throughout.
  • Category L systems: Automatic fire detection and fire alarm systems intended for the protection of life which are further sub divided into:

L1: systems installed throughout all areas of the building - gives the earliest possible warning of fire and longest time available for escape.

L2: systems installed only in defined parts of the building. Objective of a Category L2 system is identical to that of a Category L3 system, with the additional objective of affording early warning of fire in specified areas of high fire hazard level and/or high fire risk

L3: designed to give a warning of fire at an early enough stage to enable all occupants, other than possibly those in the room of fire origin, to escape safely, before the escape routes are impassable owing to the presence of fire, smoke or toxic gases.

L4: systems installed within those parts of the escape routes comprising circulation areas and circulation spaces, such as corridors and stairways. The objective of a Category L4 system is to enhance the safety of occupants by providing warning of smoke within escape routes.

L5: systems in which the protected area(s) and/or the location of detectors is designed to satisfy a specific fire safety objective (other than that of a Category L1, L2, L3 or L4 system).

  • Category P systems: Automatic fire detection and fire alarm systems intended for the protection of property. Further subdivided into:

P1: system installed throughout all areas of the building - offers the earliest possible warning of fire to minimise the time between ignition and arrival of firefighters.

P2: system only installed to defined parts of the building - offers early warning of fire in areas of high fire hazard level, or areas in which the risk to property or business continuity from fire is high.

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17
Q

What is the building safety Act 2022?

A
  • Formerly the Building Safety Bill has now received Royal Assent and completed all parliamentary stages to become the Building safety Act 2022 in April 2022.
  • The main objective of the act is to give residents more power to hold builders and developers to account and toughen sanction against those who threaten their safety.
  • Applies to new and existing high rise residential buildings of 18m and above (or seven storeys or more) or mixed use buildings that have at least 2 residential units.
  • The bill includes the main issues / implementations:
  1. Implementation specific gateway points at design, construction and completion phases to ensure that safety is considered at each and every stage of a building’s construction and safety risks are considered at the earliest stage of the planning process. Will ensure that there is a ‘golden thread’ of information created, stored and updated throughout a buildings lifecycle which will establish clear obligations on owners and ensuring swift action taken by regulators.
  2. Includes measures for leaseholders for being responsible for the remediation costs of their building.
  3. Creation of the Building Safety Regulator (will sit as part of the HSE) - will oversee safety and performance of high rise and other buildings by working closely with local authorities, fire rescue services and experts, create expert committees including a statutory residents panel to ensure residents have a input into development of policy of the Building Safety Regulator.
  • Many measures are likely to take 18 months to introduce according to the government.
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18
Q

Where would you find information on choosing a fire detection system?

A

BS 5839-1:2017 - Fire detection and fire alarm systems for buildings. Code of practice for design, installation, commissioning and maintenance of systems in non-domestic premises.

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19
Q

What fire alarm did you have installed in you case study building?

A

We had a mixed category system with a category M system to the warehouse and a category L2 for the ancillary accommodation.

The category M consisted of manual call points adjacent to all exists.

The category L2 system consisted of fire detection and manual call points.

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20
Q

What is the Regulatory Reform (Fire Safety) Order 2005 for ensure fire safety of a building?

A
  • Covers England and Wales.
  • Places responsibility for anyone who has some sense of control in a premises to take reasonable steps to reduce the risk of fire and make sure people can escape safely if there is one. The order applies to all premises whether they are permanent of temporary.
  • The fire safety act 2021 has now amended the act which means any premises with two or more domestic dwellings must undertake a Fire Risk Assessment which takes into account the structure and external walls (from outer cladding to internal plasterboard), attachments to the external walls (balconies and green walls etc), doors and windows within external walls, doors between domestic premises and common parts (flat entrance doors) and any common parts.
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21
Q

Under the Regulatory Reform (Fire Safety) Order 2005 who is responsible for the fire safety in business or non-domestic premises?

A
  • The responsible person – any person who has a sense of control over a premises, this can include:
  • Employers
  • Owner.
  • Landlords.
  • Occupier.
  • Anyone else with control of the premises e.g facilities manager, managing agent etc.
  • If there is more than one responsible person, these individuals are expected to work together to meet their responsibilities.
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22
Q

What responsibilities does the responsible person / persons have under the Regulatory Reform (Fire Safety) Order 2005?

A
  • Carry out a fire risk assessment of the premises and review it regularly.
  • Tell staff or their representative about the risks identified.
  • Put in place and maintain appropriate fire safety measures.
  • Plan for emergency.
  • Provide staff information, fire safety instruction and training.
23
Q

What are non-domestic premises?

A
  • All workplaces and commercial premises.
  • All premises the public have access to.
  • Common areas of multi-occupied residential buildings.
24
Q

For common or shared areas, who is the responsible person?

A
  • The landlord, freeholder or managing agent.
25
Q

What systems are available to protect buildings from the outbreaks of fires?

A
  • Fire and smoke detectors (sounders and beacons).
  • Fire sprinkler systems.
  • Inert gas suppression systems.
26
Q

What conditions are needed to start a fire in a building?

A

The ‘Fire Triangle’

  • Oxygen
  • Heat
  • Fuel source
27
Q

What is the ‘flash point’?

A

Temperature at which a particular organic compound gives off sufficient vapour to ignite in air

28
Q

What is the ‘spontaneous ignition temperature’?

A
  • The temperature at which fuel vapours ignite spontaneously without the application of an external flame.
29
Q

How do fires start in a building?

A
  • According to the National Fire Protection Association, the five most common causes of fire in commercial buildings are:
  • Cooking equipment.
  • Heating equipment.
  • Electrical and lighting equipment.
  • Smoking materials.
  • Intentional fire setting.
30
Q

How might a fire spread in a building?

A
  • Fire passes through a series of stages from ignition to when combustible materials are alight.
  • A critical stage occurs when flames reach the ceiling; the radiant heat transferred back to the surface of the fuel is increased. This occurs when the ceiling temperature reaches circa. 550 degrees.
  • The remaining combustible materials will then rapidly reach their fire points and ignite.
  • This transition stage is called a flashover. If there is inadequate ventilation during the growth period the fire may fail to flashover. I may die or continue to smoulder.
  • The stable phase follows the flashover, whereby flaming occurs throughout the enclosed space. This is when the highest temperatures are reached.
31
Q

How can fire be contained through a building structure?

A
  • Fire compartments; by sub-dividing a building into discrete compartments.
  • Fire cavity barriers in ceiling voids.
  • Fire cavity closers around openings such as windows.
  • Fire rated partitioning.
  • Fire doors with closers, intumescent strips and wired glass (if panel present).
32
Q

How is a structure of a building protected from fire?

A
  • Intumescent coatings – these react at high temperature and increase in density, stopping from oxygen from reaching the underlying steel to form a fireproof coating.
  • Firestopping – infilling of service penetrations with fire batt.
33
Q

What is the maximum travel distance for an office building?

A
  • Single means of escape = 18m
  • More than one means of escape = 45m
34
Q

What is the maximum travel distance for an industrial building?

A
  • Appropriate travel distance depends on the level of fire hazard associated with processes and materials being used – level of hazard is referred to ‘normal hazard’ or ‘higher hazard’.
  • Single means of escape (normal hazard) = 25m
  • More than one means of escape (normal hazard) = 45m
  • Single means of escape (higher hazard) = 12m
  • More than one means of escape (higher hazard) = 25m
35
Q

What are the main types of fire system in non-domestic premises?

A
  • BS 5839-1 specifies three categories of fire systems:
  • Category L – for the protection of life.
  • Category M – manual fire detection and alarm systems.
  • Category P – for property protection.
36
Q

What would you check to determine whether cladding was compliant?

A
37
Q

What are the main types of cladding? Are they all harmful?

A
38
Q

What is the role of the Building Safety Regulator?

A
  • Has been created as part of the Building Safety Bill 2022 and will form part of the Health and Safety Executive (to allow quick implementation).
  • Has three main functions:
  1. Oversee the safety and standards of all buildings.
  2. Helping and encouraging the built environment industry and building control professionals improve their competence.
  3. Leading implementation of the neg regulatory framework for high rise buildings.
  • Building Safety Regulator will establish and maintain 3 specific committees:
  1. Residents panel (mixture of residents and reps from organisations, will help set future policies on how duty holders should provide info to residents, complaints procedures etc).
  2. Industry Competence Committee (monitor and help improve industry competence).
  3. Building Advisory Committee (advises o matters relating to a building’s function ensure safety standards).
39
Q

What did you pre-purchase advise did you give to your client with regards to composite cladding?

A
  • Advised the client that they should have the vendor confirm the specification of the cladding, including the material that makes up the insulation core and whether the panels are Loss Prevention Certification Board (LPCB) approved.
  • Advised that the vendor may have access to this information is they are in possession of the H&S file for the property.
  • Approached one of the main manufacturer’s (Kingspan) to see if they had record of the cladding purchased for the property.
  • Advised that insurers consider that any risk containing non-LPS compliant panels represents a higher potential for fire spread, they will either restrict cover or offer cover on higher rates, perhaps with higher excesses. If panels of unknown origin are contained within an existing building an assumption may be made as to the type of insulant in order to set the premium accordingly. On this basis, insurance requirements could dictate the replacement of panels, the fitting of fire suppression systems, improved compartmentation and routine fire risk management procedures.
40
Q

What is the test that is conducted to certify composite cladding materials?

A
  • LPS 1181 (fire growth) and LPS 1208 (fire resistance).
  • LPS = Loss Prevention Standards
  • LPS 1181 - Is a suite of robust large scale tests designed to determine the fire growth performance of cladding products. Has two parts; Part 1 (external wall and roofs) and Part 2 (internal wall and ceilings).
  • LPS certification as tests are carried out are large scale and therefore mimic performance of panels once installed on a building - others will test performance of single panels etc.
  • The standards were developed in consultation with a wide range of key stakeholders including the Associated of British Insurers and trade association representatives of the panel manufacturers.
  • LPS standards can be downloaded via the REDBOOK LIVE website.
  • There are two main LPS product grades:
  • Grade EXT-A: Product that satisfies requirements of both fire resistance (LPS1208) and fire growth (LPS 1181 Part 1).
  • Grade EXT-B: Product that satisfies fire growth (LPS 1181 Part 1) only.
41
Q

What is the difference between PIR and PUR isolation?

A
  • The most significant difference between PIR foam and PUR foam is its resistance to high temperatures and fire. Whereas PUR foams start to degrade at temperatures of around 230-250°C, some PIR foams will only begin to degrade as temperatures rise towards 400°C.
42
Q

How would you identify a composite panel?

A
  • Flat or micro-ribbed panels, usually 900-1200mm width, often (but not exclusively) laid horizontally.
  • Top hat type vertical joint covers on side sheeting.
  • Interlocking edges with concealed fixings.
  • Shallow profiles with wide troughs and thinly ribbed liner panels.
  • Spacer type primary fastenings. (These have a thread just below the head washer together with a separate thread to the main shank).
  • The top thread supports the outer metal sheet and prevents crushing of the insulation.) It will be necessary to remove a primary faster for examination.
43
Q

What are the issues with composite cladding?

A
  • Difficult to extinguish a fire as the combustible cores can catch fire and then are protected by the external panel skin. This means that fire fighters or sprinkler systems have little effect.
  • This internal spread of fire means that the cladding can breach the buildings compartmentalisation such as concrete floors and spread to successive floors in the building.
  • Lack of fire resistance of panel fixings can lead to sudden collapse or delamination of the panels, exposing the combustible insultation directly to the fire.
  • When the plastic core burns this leads to toxic, dense black smoke.
44
Q

What certification would you look for to confirm that a composite panel did not pose a risk to a property? What other certification / technical details would you look for with regards to combustibility?

A
45
Q

What is ACM cladding? Why is it notorious with regards to fire safety in buildings? What statutory instrument governs its’ use?

A
  • Aluminium composite cladding.
  • Aluminium composite cladding with a polyethylene core (Reynobond PE ACM) was though to be in part responsible for the Grenfell Tower Fire on 14 June 2017.
  • Approved Document B - ‘The external envelope of a building should not contribute to undue fire spread from one part of a building to another part. This intention can be met by constructing external walls so that both of the following are satisfied. a. The risk of ignition by an external source to the outside surface of the building and spread of fire over the outside surface is restricted. b. The materials used to construct external walls, and attachments to them, and how they are assembled do not contribute to the rate of fire spread up the outside of the building.’
46
Q

What is composite cladding?

A
  • Composite cladding is formed of a sandwich construction which comprises 2 outer layers of steel or aluminium sheet enclose an inner core of adhesive-bonded lightweight insulation.
  • Insulation can comprise of the following:
  1. Rigid polyurethane (PUR)
  2. Polyisocyanurate (PIR)
  3. Extruded polystyrene (EPS)4. Phenolic foam
    * 5. Mineral fibre
47
Q

What is the test that is conducted to certify composite cladding materials?

A
  • LPS 1181 (fire growth) and LPS 1208 (fire resistance).
  • LPS = Loss Prevention Standards
  • LPS 1181 - Is a suite of robust large scale tests designed to determine the fire growth performance of cladding products. Has two parts; Part 1 (external wall and roofs) and Part 2 (internal wall and ceilings).
  • LPS certification as tests are carried out are large scale and therefore mimic performance of panels once installed on a building - others will test performance of single panels etc.
  • The standards were developed in consultation with a wide range of key stakeholders including the Associated of British Insurers and trade association representatives of the panel manufacturers.
  • LPS standards can be downloaded via the REDBOOK LIVE website.
  • There are two main LPS product grades:
  • Grade EXT-A: Product that satisfies requirements of both fire resistance (LPS1208) and fire growth (LPS 1181 Part 1).
  • Grade EXT-B: Product that satisfies fire growth (LPS 1181 Part 1) only.
48
Q

What is HPL?

A
  • HPL is high pressure laminate - formed of pressurising layers of wood or paper fibres into a resin and then bonding them together using heat.
  • HPL can be a cause for concern - used on the University of Bolten student accommodation block that caught fire in 2019.
49
Q

What is the Hackitt report?

A
  • Report that was carried out by Dame Judith Hackitt that undertook an independent review of the building regulations and fire safety relating to high-rise buildings.
  • The recommendations within the report have been considered by government and materialise in the new wave of legislation such as the Building Safety Act and the Fire Safety Bill.
  • The report focused on
  1. regulatory system around design, construction and on-going management.
  2. Compliance and enforcement issues.
  3. International regulation and experience around fire safety.

The final report called: Independent Review of Building Regulations and Fire Safety: final report set out the objectives of a new regulatory framework which included:

  1. Create a more simple and effective for driving building safety - making the responsibilities of dutyholder’s across a building’s lifecycle clearer.
  2. Reassert the role of residents - stronger redress route created and ensuring they know their responsibilities and role regarding keeping their building safe for them and their neighbours.
  3. Provide stronger oversight of dutyholders with incentives for the right behaviours and sanctions for poor performance.
50
Q

Are all insulation types bad for composite panels?

A
51
Q

Name some fire safety design elements that are incorporated into a buildings design

A

Look at RICS cladding note - cavity closers etx.

52
Q

What other cladding systems can be dangerous in terms of fire safety?

A
  • Brick slips - used for external cladding systems and rainscreen cladding.
  • Slips are mechanically fixed to carrier steel rails or boards bonded to mineral wool of other backing materials.
  • Fire performance depends on brick slips themselves, mounting materials and fixing methods.
53
Q

What is REDBOOK LIVE?

A
  • Ran by BRE (Building Research Establishment).
  • Has a online database that lists LCPB approved products to ensure you are specifying products that are compliant with current legislation.
54
Q

What is the euroclass system?

A

System that ranks building materials from A1 to F depending on combustibility, also gives a smoke rating and a flaming droplet rating.