Forensics in Focus - IFIC Forensics
←
→
Page content transcription
If your browser does not render page correctly, please read the page content below
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 1
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. 2
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 3
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 4
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 5
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 6
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 7
Download the IFIC App Follow our Company Page on LinkedIn for industry updates and news. Follow us on Twitter Merry Christmas and a Happy New Year from all at IFIC Forensics INSTRUCT IFIC FORENSICS TODAY: UK Tel: Free phone 0808 235 9767 Email: instructus@ific.co.uk Web: www.ific.co.uk Ireland Tel: +353 (0)1 686 9318 Email: instructus@ific.ie Web: www.ific.ie
You can also read