Forensics in Focus - IFIC Forensics

 
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Forensics in Focus - IFIC Forensics
Forensics in                                                                                                      Issue 17| Dec 2019

Focus

                   Introduction - Professor James Lygate

Welcome to the winter edition of Forensics in Focus. The content of this edition focuses on some
key trends and topics that have been prevalent in 2019. I hope you will find the subjects covered
both highly relevant and of interest.
We were approached by some of our insurer clients in the           parking more cars in confined spaces are sought, fire risk
second half of the year who were seeking intelligence as to        management becomes ever more vital to protect property and
why their fire claims experience was increasing in severity.       human life.
Whilst fires attended by the Fire and Rescue Service (FRS)
have reduced dramatically in the last 10 – 15 years, the           We work hard at keeping our finger on the pulse of relevant
number and size of insurance claims for fire damage have not       and insightful topics featured in the media as one way of
followed this trend and illogically in many cases have risen.      informing our client communications and keeping our ever
As a trend which is creating an impact across the insurance        increasing LinkedIn following up to date with topical news. I
market, we have included an article – Fire Claims Insights -       am proud to say that IFIC Forensics has the largest following
exploring how the changing nature of fire cause is linked to       by company page of type in the market, with over 1,140
frequency and severity.                                            followers in our LinkedIn community representing insurers,
                                                                   loss adjusters, risk managers, damage management experts,
It is over two years since the Grenfell Tower tragedy and at       lawyers and more. If you’re not already doing so, I invite you to
the time of writing Sir Martin Moore Bick has published his        follow us on LinkedIn. Simply type IFIC Forensics in the search
conclusions of Phase 1 of the Grenfell Tower Inquiry. It would     bar and hit the follow button when our company page loads.
seem very clear that firefighting policy and procedure needs       You can also follow us on Twitter by using the same process.
to be better aligned to the implications of current construction   It’s good to be connected!
practices and too, reliance on developer adherence to building
regulations is fraught with risk. The building regulations         Finally I would like to extend a warm welcome to Mugtaba
themselves, meanwhile, are designed to protect life by             Lazim who has joined the IFIC Forensics team as a Graduate
providing limited time for persons present to escape. They         Investigator and will be working out of our Warrington
do not, unless part of a separate fire safety design, provide      office which opened earlier this year. Mugtaba has been
for refuge, such as in hospitals. I write further on fire safety   accompanying Chris Shorten, our CRM Manager, out and about
challenges in this issue. The conclusions of the Phase 2           at some recent industry events as part of his induction and to
Report from the Inquiry which will look at building materials      introduce him to the market. We will be pleased to include a
and regulations will certainly raise concerning questions. It is   profile of Mugtaba in the next edition of Forensics in Focus.
my hope that the findings of the Inquiry will act as a catalyst
for long overdue change.                                           I would like to take this opportunity to thank you for your support
                                                                   of IFIC Forensics in 2019 and to wish you and your families a
Catastrophic car park fires hit the headlines at the end of        wonderful Christmas and a healthy and prosperous 2020.
August. This time a multi-storey car park at the Douglas Village
Shopping Centre in Cork, Ireland. Our article on Car Parks         As always, if you have any suggestions for topics you would like
and Fire Risk Management examines current regulation and           to see included in Forensics in Focus then please email me at
research related to fire spread in car parks. As private vehicle   jlygate@ific.co.uk
ownership continues to increase and innovative methods of

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Forensics in Focus - IFIC Forensics
Fire Claims Insights
    Deon Webber – Senior Investigator, IFIC                                                                                    Chip pan fire

    Whilst fires attended by the Fire and Rescue Service (FRS)
    have reduced dramatically in the last 10 – 15 years, the
    number and size of insurance claims for fire damage have not
    followed this trend and illogically in many cases have risen. So
    why is it that today’s fires seem to be more severe?

    The changing nature of fire cause is linked to claim
    frequency and severity

    The causes attributed to domestic and commercial fires have
    changed along with our lifestyles over the past 50 years as
    have the characteristics of the materials involved. In the 60’s
    and 70’s fires were commonly started by chip pans, electric
    blankets, paraffin heaters, open coal fires and cigarettes and
    matches. Thermostatically controlled fryers, microwaves and
    central heating, have since reduced many of these fire risks.

    But as one risk disappears it is replaced by another. As the
    number of smokers has dramatically reduced we have seen
    the rise of vaping and electronic cigarettes, which due to
    their use of lithium ion batteries, have been the cause of               Tumble dryer fire
    many spectacular fires. The same can be said of defective or
    counterfeit phone chargers and many other devices that use             solar powered photovoltaic systems, battery power storage,
    lithium ion batteries which have been linked to mobile phone           sophisticated security systems and smart appliances. The
    fires, laptop fires and even recycling site fires. Fires originating   growth in electrical fires, arising from misuse and defects in
    in white goods are also commonplace nowadays and include               components and installation is significant.
    washing machines, dishwashers, fridges, freezers and
    tumble dryers – many of which make headline news but all of            Arson must also be considered with deliberately started fires
    which were practically unheard of 50 years ago. Homes and              remaining the largest single cause of fire in England and
    business premises have also evolved with central heating, full         Wales. The past year has seen a minor decrease in some
    mains wiring and increasingly technical heating and cooling            deliberate fires; the trend in the past five years has seen a halt
    systems; together with the arrivals of connected premises and          to the dramatic decreases from the past 15 years.

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Forensics in Focus - IFIC Forensics
rate of fire growth and spread of fire gases. Open stairways
                                                                    provide routes for fire and smoke spread and the replacement
                                                                    of natural fibre furnishings with modern synthetic materials
                                                                    contributes to greater fire loading. The drive for sustainability
                                                                    and energy efficiency contributes to heat build-up and
                                                                    containment of fire gases, creating conditions in which
                                                                    flashover can be reached in shorter times.

                                                                    Fire and Rescue Service Challenges
                                                                    There has been a 23% reduction in fulltime firefighters
                                                                    since 2010 and many fire stations have been closed or
  Partial roof collapse                                             amalgamated. This has seen longer response times and
                                                                    a perceived rise in defensive, external firefighting where it
Buildings                                                           is seen as too dangerous for a crew to enter the property.
Modern buildings are changing, with the evolution of new            Fighting the fire from outside using water jets through windows
techniques and modern materials. Modern construction                and aerial appliances leads to much greater damage incurred
techniques use less raw material and have greater reliance          from firefighting water. The reduction in reported fires has
on pre-engineered, lighter weight ‘manufactured’ systems.           had an effect on the firefighting experience of all but the
The outcome, when involved in fire, can be rapid collapse and       busiest fire officers with the acquisition of associated skills
greater destruction if not total loss.                              and knowledge of offensive firefighting consequently taking
                                                                    longer to acquire. These factors coupled with the demand for
Construction site fires including those occurring during            sustainable, cheaper construction methods and the impact
refurbishment and renovation works are on an upwards                of modern construction and building design on fire behavior
trajectory according to data from the Home Office, with             means that the potential for the severity and cost of the fire to
intentionally caused fires up by 43% between 2015 – 2017.           escalate is high.
Hot work is linked to a large proportion of construction site
fires. Onsite discipline is paramount and the use of permit to
work schemes can help to ensure the correct level of control is
applied. Timber frame construction has for many years been
restricted to the low-rise residential sector. This appears to be
changing with advances in technology allowing timber frame
to break into the commercial and mid-rise residential market.
Timber framed buildings are at particular risk from fire when
under construction with the inherent risk of construction
methods which involve hot work. There has also been an
increase in the use of external timber cladding over recent
years and in June this year 30 flats in a five-storey block in
Barking were damaged in a fire which spread up external
timber cladding.

The use of combustible cladding has been an issue for a
number of years, spectacularly highlighted by a number of
high-rise external fires in places such as Dubai. The extent
of the issue in the UK was brought to light in 2017 after the
tragedy at Grenfell Tower where 72 people lost their lives.
Combustible cladding is the subject of further review in Phase
2 of the Grenfell Tower inquiry, which has reported its Phase
1 findings in October 2019 and the Government is reviewing
fire safety regulations. And more recently, as we go to print,
cladding has hit the headlines again with the fire at the
student residences in Bolton.

Building design can also impact how a building performs
in a fire. The modern trend has been for family homes and
commercial offices to adopt an open plan design. Lack of              External firefighting with water jets
                                                                      Credit: Chesire Fire and Rescue Service
interior sub division and increased ventilation increases the

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Forensics in Focus - IFIC Forensics
Car Parks and Fire Risk Management
    Deon Webber – Senior Investigator, IFIC Forensics
                                                                                                            Automatic stacking car park

    On August 31, 2019, a car drove into the multi storey car            to result in uncontrollable fire spread in the car park or in
    park of the Douglas Village Shopping Centre in Cork, Ireland.        serious damage to the structure of the building.”
    The car, an Opel Zafira, parked on the first floor and the
    occupant hurried from the car to ask for help. Security              A Worldwide Problem
    staff observed the car to be on fire, evacuated the shopping         It is true that most car fires in car parks do not spread
    centre and called the fire service. On their arrival at the first    beyond the vehicle of origin. When they do however, there
    floor, multiple cars were involved. The fire was eventually          is the potentially huge fire load of vehicles situated in close
    brought under control, but not before around 50-60 cars              proximity to one another, generally in a compartment with a
    were damaged and the building so damaged that demolition             low ceiling. The significance of the low ceiling is that the lower
    was inevitable. The shopping centre is expected to close             the ceiling the faster the spread. Notable and tragic examples
    for around a year with devastating losses to the businesses          include:
    within. The fire is reminiscent of the catastrophic fire at the
                                                                         • 2004 Gretzenbach, Switzerland 7 firefighters killed as
    car park of the Liverpool Arena on New Year’s Eve 2017,
                                                                           ceiling of the car park collapses;
    where around 1150 vehicles were destroyed and again the
    building was required to be demolished.                              • 2017 South Korea, a fire spread from underground parking
                                                                           area to engulf 8-storey building above, killing 29 people;

                                                                         • 2018 Paris, 200 evacuated from apartments above a car
                                                                           park fire, a 28 year old firefighter died;

                                                                         • 2006 Bristol, fire in underground car park beneath
                                                                           sheltered housing involved 22 cars. 61 evacuated and one
                                                                           man, from an apartment above the car park, later died.

                                                                         Regulation
                                                                         There are many types of car park: open air, basement,
                                                                         multi storey, some are free standing blocks whilst many are
                                                                         incorporated into office buildings, residential blocks and
      Early image from car park user (Cork)                              shopping centres.

    These fires are an extreme example of a problem that has             Recommendations for the fire safety of car parks in England and
    been challenging the fire risk management industry for many          Wales are primarily those contained in Building Regulations,
    years. In 1968, the Government produced Fire Note No.10,             Approved Document B. The main objectives being to protect
    “Fire and Car-Park Buildings”. Following research that showed        those occupants evacuating by avoiding the build-up of toxic
    the potential for single car fires to spread rapidly from one        gases; to prevent the spread of fire from one storey to another,
    vehicle to another and thus to determine the fire resistance         and to assist the fire service in their operation.
    requirements of large-scale vehicle storage structures. The
    risk was not seen as significant as the report summarised            This official guidance does not currently require the
    that “an outbreak of fire, within a single parked car, is unlikely   installation of sprinklers in car parks. Trust is placed on

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Forensics in Focus - IFIC Forensics
Remains of damaged vehicles

‘passive protection’ measures such as fire walls and doors,        3000 reported car park fires, only 162 occurred where a
and smoke ventilation. However, the guidance is based              fixed fire suppression system was present, and sprinklers
largely on data gained in fire tests carried out in the 1960s,     extinguished 100 of them. In only 1% of cases did sprinklers
on cars vastly different from those made today. Today’s cars       operate and not contain the fire.
have an increased use of plastics and other combustibles
and are generally larger, and therefore carrying more fuel,
mostly in plastic tanks. Modern electric/hybrid vehicles bring
their own issues.

The design of the building often determines the type of
ventilation it possesses, be it open sided, naturally ventilated
or mechanically ventilated.

Car fires in enclosed areas have the potential for vehicle to
vehicle spread. This is due to direct radiation, re- radiation
of ceiling fire plumes, direct flame contact, running fuel fires
due to plastic fuel tanks and there is also the added worry of
alternative fuels such as LPG, batteries and hydrogen.
                                                                    Car blaze
Research
In 2006, DCLG (Dept. for Communities & Local Government)           Conclusions
Sustainable Buildings Division, commissioned BRE Global            Private vehicle ownership continues to increase across the
to carry out a three year project looking at the problems          world. Innovative ways are required to temporarily store this
associated with fires in car parks.                                growing number of cars in our overcrowded cities. Automatic
                                                                   car stacking systems are already in use with their deployment
Using a specially constructed test rig, the tests focussed on      set to grow.
the speed of vehicle fire spread. The test demonstrated that
the provision of sprinklers could limit spread from the vehicle    Fires in car parks are rare and injuries from these even rarer.
where the fire started and that this would have a dramatic         The recent car park fires however demonstrate the potential
effect on the ability of the fire service to extinguish any such   of fires that can develop beyond the ability of the Fire and
fire in relative safety.                                           Rescue Service to control it.

The BRE report Fire Spread in Car Parks (2010) also                As car design becomes increasingly diverse, and vehicle
concluded that when considering the effectiveness of               fire load continues to increase, there is a need to review
sprinklers in controlling car fires in car parks that; ‘the        the precautions to be considered when designing methods
incidence of fatalities and injuries is zero and the property      to store them in large numbers. There is considerable
loss is around 95% lower than that of an uncontrolled fire’.       evidence and published research to support the value of the
                                                                   installation and use of automatic sprinklers.
UK statistics show that between 1994 and 2005, of over

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Forensics in Focus - IFIC Forensics
Fire Safety Advice - Get Out and Stay Out
    Prof. James Lygate – Founder and Principal Investigator, IFIC Forensics                                       Grenfell Tower fire

    Sir Martin Moore Bick has now published his conclusions of Phase 1 of the Grenfell Tower Inquiry.

    His conclusions have ramifications which will be felt             by the response of residents in high-rise fires which had
    throughout the construction community and are of concern to       occurred after Grenfell. I was taken to task by an experienced
    anyone living in a high-rise residential block.                   Spanish firefighter turned fire investigator from Madrid. He
                                                                      expressed the view that residents should be required to
    On the face of it there is a dichotomy between the philosophy     remain in their apartments providing firefighters access and
    of stay put and the development of the building regulations       not to impede their firefighting efforts. Such a view reflects
    which concentrate on providing an adequate (but short) period     some in the firefighting community who have failed to grasp
    of time for people to escape.                                     the hazard posed by combustible cladding systems in new
                                                                      and refurbished buildings. So unless and until combustible
    London Fire Brigade have disowned the doctrine of stay put        cladding systems are removed and no longer used, firefighting
    but it was their employees following LFB policy which guided      policy and procedure requires to change.
    residents to stay put and wait to be rescued rather than
    evacuate when they had a chance to do so.                         Strategic managers who make firefighting policy have not
                                                                      kept up with the implications of changes in construction and
    I lecture annually at the University of Edinburgh’s course        other recent fires in timber framed buildings make the point.
    in fire science and fire investigation. At this year’s course I   Had the fire at the Beechmere Residential Complex in Crewe
    expressed the view that ‘stay put’ was dead as evidenced          occurred in the middle of the night rather than in the late

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Forensics in Focus - IFIC Forensics
Beechmere Residential Complex Fire - Credit Chesire Fire and Rescue Service

afternoon, the outcome might have been very different. The         stairs and be overcome by untenable conditions. Conditions
risks posed by multi-storey timber frame buildings are only        in the stair well at Lakanal House became untenable because
now being revealed and assessed.                                   there was a breach in the fire-resisting wall between the flat
                                                                   on fire and the stairwell, but not before escape was possible.
                                                                   Kick boards which permit hose to be run through fire resisting
                                                                   doors are typically found in cruise ships. Why could this not be
                                                                   introduced into builds?

                                                                   The recent fire in the multi-storey car park of the Douglas
                                                                   Village Shopping Centre in Cork highlights the issues of multi-
                                                                   storey car park fire safety and reinforces my view that the only
                                                                   way to protect the structure, and therefore to limit losses due
                                                                   to business interruption, is to fit sprinkler systems. The same
                                                                   can be said of schools.

                                                                   So here we have it, we have building regulations which are
                                                                   designed to, and with glaring exceptions, protect life by
                                                                   providing limited time for persons present to escape. They do
                                                                   not, unless part of a separate fire safety design, provide for
                                                                   refuge, such as in hospitals.
  Aftermath of car park fire at Douglas Village Shopping
  Centre, Cork - Credit Cork City Fire Brigade
                                                                   If my mother was in a care home and there was a fire what
                                                                   would my advice be? Get Out and Stay Out! If my daughter
I welcome the changes in the Scottish building regulations in      was on the 20th floor of a residential block and there was a
the latest edition of the Technical Standards which requires       fire my advice would equally be Get Out and Stay Out!
buildings over 18m in height to be equipped with fire detection
and alarm systems which at the control of the fire service can     If that advice sounds familiar it should do because you will
be used to signal a building wide evacuation. Firefighters could   find the mantra Get Out and Stay Out on the fire safety pages
of course be taken out of the equation and such systems be         of almost every Fire and Rescue Service in the UK. This is not
programmed to trigger a building wide evacuation should a          a new mantra and it came into use many years ago.
fire spread to more than two apartments or fire spread from
the apartment of origin to another floor. Such a system is
not without risk and occupants could be directed into single

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Forensics in Focus - IFIC Forensics
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