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1. Pedestrian Safety?Get a Grip!Dr. Paul LemonPhD BSc(Hons) CPhys CSci MInstP Health & Safety LaboratoryHealth & Safety Executive
5. Human CostsAlison Hockaday Two slip accidents
Thirty one operations
600,000 compensation
7. Reportable Slip Accidents (to HSE) Over-3-Day 24% - 29,000 / annum
Non Fatal (Major) 37% - 10,000 / annum
Fatal Falls? Complications?
The largest cause of reported accidents
1 significant slip accident every 3 minutes
8. Falls from Height
Workplace Transport
Musculoskeletal Disorders
Stress
Agriculture
Construction
Health Services
Slip and Trips
9. Legislation Construction Design Management (CDM) Regs
Health and Safety at Work Act
Management of Health and Safety Regulations
Building Regulations
10. Legislation Workplace Health Safety and Welfare Regs, 1992
Regulation 12(2)(a):
The floor, or surface of the traffic route, shall have no hole or slope, or be uneven or slippery so as, in each case, to expose any person to a risk to his health or safety.
11. Legislation Approved codes of practice:
The surface of floors or traffic routes should be free from any hole, slope or uneven or slippery surface which is likely to:
Cause a person to trip or fall
Cause a person to drop or loose control of anything being lifted or carried
12. HSE Guidance
13. HSE Guidance HS(G)156
The requirements for the construction of a floor are phrased in absolute terms. Therefore a floor must not be constructed which is slippery.
This is a high standard of legal duty and it is not limited to doing only that which is reasonably practicable.
15. Safer Surfaces to Walk On Document published by CIRIA
Funded by HSE
Summary of HSE slips research (HSL)
Aimed at non-specialists for specification / maintenance / management of floors
Aims to encourage a holistic approach to the management of slips
16. Document Contains
Introduction to slipperiness assessment
Selection and management of floors
Contamination and cleaning
Footwear
Environment
Human Factors
Test methods for assessing floors
17. Slips Assessment Methods then
Shoe shuffle?
Subjective assessment?
Reflectivity?
18. Slips Assessment Methods now Surface microroughness analysis
Coefficient of Dynamic Friction
Laypersons tools
Pedestrian Slipping Expert System (PSES)
Slips Assessment Tool (SAT)
Slips & Trips E-guidance Package (STEP)
20. Surface Microroughness Analysis Large range of instruments
Large range of parameters Rz not Ra
A video was shown of meters being used to measure the microroughness of surfaces.
22. CoF Test Methods Sled Tests Sled type CoF tests
Not accepted by HSE, BSI or UKSRG
Designed around classical physics
Do not reproduce relevant fluid dynamics
Misleading in wet conditions
23. CoF Test Methods Pendulums Pendulum type CoF tests
Imitate heel impact
Produce correct fluid dynamics
Realistic CoF measurements in wet and dry conditions
HSE/HSL preferred method of test
Arguments fed into BSI and UKSRG
24. CoF Test Methods Pendulums Dry and wet testing
Smooth stainless steel floor
Four-S test slider material
25. CoF Test Methods Pendulums Dry, dry contaminated, wet
Wet heel simulation
Smooth, vitrified ceramic floor
Four-S test slider material
26. Ramp Test Methods
27. Ramp Test Methods German Standard tests methods
DIN 51097 (barefoot with soap solution)
DIN 51130 (EN345 boots with motor oil)
BSI Standard test method
BS 8445 (barefoot with bath-mats)
HSL Standard test method
Standardised footwear (Four-S soled)
Potable water
HSL Bespoke test method
Any flooring surface (open grids, durbar..)
Any footwear (existing, planned, experimental..)
Any contaminant (sea water, drilling mud..)
28. New Developments SlipAlert
New design, American origins
Designed by Chairman of BSI B/556
also Chairman of CEN TC/339
also Secretary of UK Slip Resistance Group
29. New Developments CEN TC/161 Test Method
The SATRA Test
Footwear specific
30. The SlipSTD Programme EC funded Euro/m 2.5
Design and specification of standard floor surfaces
Test method synergy finally
Strict deadlines
Approach based on
32. Pedestrian SafetyGet a Grip!Dr. Paul LemonPhD BSc(Hons) CPhys CSci MInstP Senior ScientistPedestrian Safety SectionHealth & Safety LaboratoryHarpur Hill, Buxton, Derbyshire, SK17 9JNDirect Tel: 01298 218345e-mail: paul.lemon@hsl.gov.ukHSE Internet: www.hse.gov.uk/slips/index.htmHSL Internet: www.hsl.gov.uk/capabilities/pedestrian.htmCIRIA Document: www.hse.gov.uk/slips/safersurface.htmSlips Assessment Tool: www.hsesat.info