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ZT Safety Systems 2015

ZT Safety Systems produces the ZT Safety Harness the safest work at height fall safety harness

If you fall from height while wearing a
conventional safety harness, 100 per cent of the falling force will be directed to your groin area.

But the ZT range of harnesses feature a revolutionary design which eliminates groin straps, distributing the force to the whole body, leaving you at far less risk of discomfort. ZT equals Zero Trauma.

Sounds too good to be true?
See the harnesses in action, and all the technical information you need at our website:

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ZT Safety Systems 2015

  1. 1. It is a structure made from webbing, designed to hold the human body in the event of a fall. It is NOT designed to prevent injury from it’s use
  2. 2. Video of crash test dummy wearing a conventional front mounted safety harness taken at Millbrook laboratories.
  3. 3. Points of impact and force distribution in a conventional harness
  4. 4. A conventional front mounted safety harness over a 4 metre drop produces enough whiplash to break the neck. * D a t a f r o m M i l l b r o o k l a b o r a t o r i e s
  5. 5. A poorly fitted conventional harness can cause strangulation in a fall.
  6. 6. Possible injuries sustained in the event of a fall wearing a conventional harness •  Trauma to testicles, womb, anus •  Spinal trauma •  Groin tissue damage •  Tearing to femoral artery •  Damage to kidneys and internal organs •  Hip dislocation •  Breast tissue damage •  Whiplash •  Collar bone fractures
  7. 7. Suspension Trauma? Everybody who is suspended in a safety harness runs the risk of shock and unconsciousness due to blood flow insufficiency. Unconsciousness can become life threatening after only a few minutes. * M L i e b l i c h a n d W R e n s i n g ( 1 9 9 7 )
  8. 8. Some form of pump is required in order to move fluid against gravity, and it is no different in the legs. The heart is an efficient organ, but with up to 20% of the blood volume being in the legs at any one time, it would have to work extremely hard at all times to maintain adequate venous return. Additional methods are required. These are provided by one-way valves in the veins and by the contraction of the calf muscles, which squeeze blood upwards towards the heart. If someone stood still for a number of minutes, up to 20% of the blood volume would be in the legs. This would place the body in to class 2 shock which could easily lead to loss of consciousness. He gives the analogy of the soldier fainting while on guard duty, described earlier in 1.2, and his rapid return to consciousness as the blood flow to the brain is restored. Having made the point that an unconscious person suspended in a harness would not automatically assume a horizontal position, he continues: “There are a number of factors that make suspension trauma in a climber/casualty different from that in our soldier.” * D r R D a w e s ( 2 0 0 0 )
  9. 9. * D r R D a w e s ( 2 0 0 0 ) To further complicate matters, after 20 or 30 minutes of the harness directly compressing tissue, the condition known as 'crush injury' will result. This causes the release of large proteins (myoglobin) from damaged tissues and when the harness (or bodyweight) is removed can be very damaging to the kidneys.
  10. 10. F a i l u r e o f t h e m u s c l e p u m p t h e l e g s R e d u c t i o n o f v e n o u s r e t u r n D e c r e a s e i n v o l u m e o f c i r c u l a t o r y b l o o d F a l l i n c a r d i a c o u t p u t F a l l i n b l o o d p r e s s u r e A c u t e O x y g e n d e f i c i e n c y O r g a n d a m a g e C i r c u l a t o r y i n s u f f i c i e n c y P a u l S e d d o n H S E 2 0 0 2
  11. 11. Deputies were summoned Monday night to a rural area after other workers heard a hardhat fall and looked up to see Stanley dangling from his safety harness. Authorities believe Stanley slipped and fell, striking his head and being left unconscious. Another worker lowered the victim to the base of the rig. Stanley had died by the time emergency personnel arrived. Sgt John Pape says the worker had a visible head injury. No cause of death was released. Investigators didn't say how far Stanley fell. Additional details weren't immediately released. * N e w s R e p o r t F e b r u a r y 2 0 1 5 GOLIAD, Texas - An oil field worker in South Texas has died after falling while near the top of a 50-foot rig. The Goliad County Sheriff's Office on Wednesday identified the accident victim as 40-year-old Scotty O'Neal Stanley of Livingston.
  12. 12. To date, there is no ideal safety harness, but it is likely that — whatever the appearance of the safety harness — a relatively long period of time spent suspended motionless can lead to death. It is recommended as a matter of urgency that when a safety harness is purchased, it should be tested while suspended so that one can find the model which best fits the shape of the body. No safety harnesses should be used that does not adjust to the body…. * B a r i o d a n d T h é r y ( 1 9 9 7 )
  13. 13. ZT SAFETY HARNESS A Safety Harness should NOT be considered as a first line of fall prevention for persons working at height. The ZT Harness, as with any other type of safety harness, should only be considered for the primary means of fall prevention while working at height as a last resort or as an additional safety measure. Working at height risks must be properly assessed by a competent person and alternate means of fall prevention considered first, such as safe working platforms, fixed guard rails/toe boards, Mobile elevated working platforms (Cherry Pickers, Scissor lifts etc).
  14. 14. •  Comfortable to wear •  Create a stylish safety harness which becomes the users uniform •  Eliminate or reduce injuries sustained in the event of a fall •  Remains comfortable and pain free when in suspension The Concept
  15. 15. Timeline ü 2008 The idea is conceived ü 2009 Initial testing is carried out by the UK HSE laboratories ü 2011 Testing carried out by Sussex University and Millbrook Crash Test laboratories ü 2011 SATRA grants CE EN361-2002 ü 2015 SAI Global grants AUS/NZ AS/NZS 1891.1:2007
  16. 16. 2011 Winners of IPAF & IAPA ‘Contribution to Safe Working at Height’ award
  17. 17. During rigorous testing at Millbrook laboratories on behalf of Satra (European CE testing body) a more accurate anthropomorphic dummy was used providing extensive sets of data relating to the forces applied to the human body. These tests exceed requirements for a conventional harness.
  18. 18. Video of crash test dummy wearing a front mounted ZT safety harness taken at Millbrook laboratories.
  19. 19. 22 of the 26 acceleration / moment / load values are lower for the ZT suggesting the ZT reduces the potential risk for certain adverse effects on the body during a fall. S u s s e x U n i v e r s i t y 2 0 11
  20. 20. The Fall forces experienced are almost identical to those that would be applied to the body when jumping down from a wall. How does the ZT Harness work in the event of a fall?
  21. 21. Point of impact and force distribution in a ZT harness
  22. 22. The ZT harness distributes forces away from the groin to a more appropriate load bearing structure of the lower limbs and pelvis C o n v e n t i o n a l Z T
  23. 23. Conventional The ZT harness reduces whiplash and fall forces by up to 60% ZT
  24. 24. When deployed, the orange webbing A slides through the black upper structure B preventing the chest strap C from being pulled upwards towards the neck Strangulation C
  25. 25. ZT Front attachment suspension position The user comes to rest in a semi-seated position.
  26. 26. ZT Rear attachment suspension position The user comes to rest in a kneeling position.
  27. 27. Component Strengths O r a n g e w e b b i n g : B l a c k w e b b i n g : L e g G a i t e r : L e g G a i t e r R o p e : C h e s t b u c k l e : 3,000kg 3,000kg 1,000kg (each leg) 500kg x 6 loops = 6,000kg (each leg) 18kN (rear & work position harness only)
  28. 28. The ZT Harness is rated for persons up to 150kg, 23st, 330lbs S t a n d a r d c o n v e n t i o n a l h a r n e s s e s a r e o n l y r a t e d t o 1 0 0 k g
  29. 29. The ZT harness does not need to be adjusted tightly, contrary to guidance for a conventional harness. It will automatically tighten and adjust to the body in the event of a fall.
  30. 30. The ZT harness is inspected in the same manner as a conventional harness, daily before use and every 6 months* An individual trained on inspecting a conventional harness should not require additional training to inspect a ZT harness. * T h i s w i l l v a r y o n l o c a l l e g i s l a t i o n
  31. 31. Fully machine washable. The harness is washed 70 times at 60°C, prior to final strength / drop testing to achieve CE approval.
  32. 32. Optional flame retardancy, tested and approved when used in conjunction with flame retardant coveralls
  33. 33. BS EN361:2002
  34. 34. The ZT Harness is manufactured in the UK using the finest quality materials and components* * G a r m e n t s v a r y u p o n c u s t o m e r r e q u i r e m e n t s
  35. 35. Manufactured utilizing the same technology as used in the production of car air bags
  36. 36. ZT Harness Types Standard Harness Front Attachment Dual Harness Front & Rear Universal Harness Front, Rear & Wo rk Positioning
  37. 37. Garment options W o r k w e a r H e a v y d u t y H i g h v i s i b i l i t y H i g h v i s i b i l i t y F l a m e R e t a r d a n t A n t i - S t a t i c E x t r e m e w e a t h e r U n d e r g a r m e n t F i r e S e r v i c e
  38. 38. Companies who have adopted the ZT Harness
  39. 39. What does ZT stand for? Zero Trauma
  40. 40.