Q: What is this product intended for?
A: INGSTROM Escape Chute is another means of emergency exit that permits rapid mass evacuation from high rise structures during life threatening emergencies. It is uniquely designed to provide a relatively safe and quick method of vertical escape. It provides a unique solution to the problems of vertical escape in difficult conditions during emergency evacuation.
Q: What are the Product Types? Maximum length?
A: INGSTROM Escape Chute can be installed in the following product types of vertical descent configurations:
- Single-Entry Escape Chute serves only the floor in a structure or building on which it is installed.
Maximum Length is 200meter.
- Multi-Entry Escape Chute serves every floor, similar to stairwell in a multi-floor building.
No constraint to length or building height – each floor has a segment of chute.
- Movable/Portable Rescue Chute is mounted on the basket/cage of the sky lift or aerial ladder truck for high rise rescue operations.
The length of chute is depending on the maximum height of aerial elevation.
Q: What is INGSTROM Escape Chute made of?
A: The chute is uniquely constructed by combining three separate layers of specialized fabrics that protect users from flame, heat and smoke. All three layers of fabrics weights together approximately 1.8 kg per running meter.
- Inner Layer is made up of two materials, Twaron is applied along the length of the chute and Flexible Rohvyl yarn based on PVC chlorofibre is used across the chute. This hybrid fabric is extremely strong, very flexible and it’s also heat resistant up to 650°C. The inner layer bears the load of the total chute and able to withstand approximately 10,000 kilos or a maximum load of 5,600 kilos per meter width of fabric.
- Middle Layer is made up of a flexible elastic ‘spun cell’ – made of Lycra and Modlacrylic fibers. It acts as brake and operate effectively in a temperature range of –45°C to +175°C. The middle layer can easily increase three times in size.
- Outer Layer is made of 100% E-fiberglass fabric non-flammable to protect the chute from fire and it resists temperature of up to 750°C. If the chute is doused with water, it can withstand even higher temperatures.
Materials used for chute construction are of EU origin and of ISO standards. The durability of chute fabrics can last for ten years, with the exception of the fiberglass coat.
Q: Is the chute detrimental to water if syringe during fire fighting?
A: No, in fact when wet it will increase the maximum operating temperature of chute when used.
Q: Can the fabric cause friction burns?
A: Yes, if your skin is extremely sensitive. In life threatening situation a temporary slight chafing skin is better than a lost life.
Q: Is it easy to breathe inside the INGSTROM Escape Chute?
A: Yes, the chute is not air-tight and light penetrates easily through as you travel through the escape. Yet, it protects the evacuees from flame, heat and smoke.
Q: Does a person’s size or shape make any difference when using the INGSTROM Escape Chute?
A: The standard size at the entry point of the chute opening is about 530 mm in diameter, therefore persons with waist over 530 mm cannot use the chute.
The factory can customize the size at the entry point of the chute opening up to 800 mm for industrial application.
The INGSTROM system relies solely on body weight and tests have proved that all evacuees regardless of size, shape and weight or injured on stretcher and unconscious people will arrived at ground level quickly and relatively safely once inside the chute.
Q: Should evacuee slide down the chute one by one? What are the safety measures?
A: The chute is strong enough to hold more than one person of average weight sliding at the same time. It is recommended that a person enters the chute every 4 seconds or 10 meters.
For safety reasons, the SOP requires a helper at the ground to slow down a fast descend by twisting the chute and to guide the evacuee out of the chute exit point quickly. To control a fast descend the helper at the ground can twist the chute.
Q: How multiple entry chutes avoids people landing on top of each other as they enter the chute at different floors?
A: At each level inside the multiple entry chute room there is an inter-com system that allows communication at every floor. This allows better coordination for floor warden at each floor to priority who need it most. By taking a firm grip on the end of upper chute from above level it stops people from above level to descent down to the next level, this allow the user at current level to descent to the lower level. By releasing the grip of the chute it allows user from above level to continue to descent to reach to the ground level. This method allows the continuous flow of evacuees at different floors and prevented people landing on top of each other.
Q: How could evacuee self-control the speed of own descends?
A: Each conscious evacuee can have good control of own rate by bending knees and bending elbows against the inner layer of chute while sliding down the chute.
Bending knees and elbows against the inner layer = SLOW DOWN
By relaxing knees and elbows = SPEED UP
Users therefore control their own speed.
Another method of regulating the speed of descends is to have a helper at the ground twisting the chute at full length and by slowly untwisting the chute to guide the evacuee to descend gradually. This method enables injured on stretcher, unconscious or disabled people as small children to be transported down safely and quickly.
Average speed for evacuee with right behavior is about 2.5 m per second. It would take approximately 35 – 40 seconds to descend a chute of up to 50 meters length. A maximum of 30 persons a minute can be evacuated at height from fire or danger.
Q: Can a person be injured in the chute?
A: Yes, injuries can occur if an evacuee descends too quickly and if there is no helper at the ground to slow that person down. A collision or rough landing at the floor may occur at the exit point of chute. Therefore frequent practice is recommended.
Q: Can one be absolutely safe in the INGSTROM Escape Chute?
A: Yes, when there is a helper at the ground to guide the evacuation operation. In addition, the users need to follow simple safety guidelines and have some awareness of the principles of operations.
Q: Is there any technical limitation or constraint for the installation of chute?
A: Yes. As the system works on the principle of “stress and friction vertical descend method” the chute need to flow vertically and free from obstruction to a clear landing point at ground.
Q: Can the same chute be “ worthy for reused” after it has being used for mass emergency evacuation?
A: Yes. But the chute would need to be inspected by factory representative to determine and to certify that is ‘worthy for reused’.
Q: Is INGSTROM Escape Chute laboratory tested? If so, where?
A: Currently, there is no standard in the world for the design and construction of escape chutes or similar devices. But INGSTROM Escape Chute is tested by The Josef Tuliszkowski Scientific and Research Centre for Fire Protection in Warsaw, Poland. The chute has also got a list of international approvals and recommendations from participation fire academy worldwide.
Q: Examples of where the INGSTROM Escape Chutes can be installed?
A: They can be installed at multi-storey buildings from 2 storey upward to high rise buildings. I.e. Government Buildings, Public Buildings, Security Buildings/Facilities, Embassies, Office Buildings, Apartments/Condominiums, Shopping malls, Hospitals/Healthcare Centers and Homes for the Elderly, -Children an Handicapped.
Escape chutes can also be installed in industrial applications:
- Nuclear Power Plants, Chemical Plants.
- Bridge Crane, Tower Crane, etc.
- Ammunition Plants and similar location.
- Space Rocket Launching Pads.
- Textile Wet Curtain Technology.
- Monorail systems.
- Giant mining and dirt moving equipment.
- Ferries, Offshore Rigs.
- Silos, Chemical/Gas Storage Tanks.
- Communication Towers, Tower Control Centers.
- Aerial Ladder Truck or Skylift platforms.
- Warehouse/Logistic Dumping Chute.
- Theatre involving aerial stunts.