Pendulum Slip Risk Assessments in the Workplace

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BS 7976: 1- 3 2002; 'The Pendulum Method' describes the entire process of the TRL (Transport Research Laboratory) Pendulum for slip resistance playing. Originally designed to replicate the actions of a slipping foot, the pendulum skid tester was subsequently adopted extensively for therapy of road surfaces. The BS 7976 pendulum slip testing method remains since they test method expressly recommended by the HSE. Is just in part due to the extensive history in slip risk assessment and strong correlation to slip incidents. The pendulum slip test remains one of the few for you to accurately recreate the hydrodynamic squeeze film generated in a slip in wet terms. Though the pendulum slip tester is somewhat awkward to employ an and requires an experienced operator it is considered best method of pedestrian slip testing it is used extensively in legal proceedings. Operation System swings a rubber slider mounted on the weighted 'foot' from horizontal, striking flooring surface near vertical and subsequently providing a reading as the foot swings back ' up '. The dynamic coefficient of friction of leading has a measurable cause problems for the Pendulum Test Value (PTV), previously known considering that Slip Resistance Value (SRV). Prior to pendulum slip testing being conducted, full slider calibration is managed. Sliders are initially prepared or 'faced' by swings over 400 grit sandpaper and lapping film, tests are then conducted on lapping film and float glass before results are compared against known offers. In addition to search testing, both before and after every direction/condition measured, the pendulum feet are swung triple without showing up in the surface. The zero can be adjusted as necessary and any discrepancy can be investigated. When the pendulum slip tester is assembled, check tested, levelled and zeroed, testing can commence. The pendulum height is adjusted as necessary to ensure a slider contact length of 1261mm during the floor deck. Tests of ground surface are conducted parallel, at 45 degrees and perpendicular towards the direction of foot traffic in dry and then contaminated conditions. The contaminant is water; but it is advised that the contaminants likely to be utilised in normal use are in use. In the past we have conducted tests with icing sugar, oil, MDF dust, mayonnaise, cement, flour, soap, ketchup, even chocolate. Sampling & Results 8 measurements are used each direction and each condition. Submitting to directories 3 measurements of each run are discarded as the slider is mounted freely and requires adjustment. The typical of e-books 5 readings is calculated and cost dry and wet/contaminated result produced. The HSE classify risk of slip from 4S PTV as follows; 0-24 High (approx 5%) 25-35 Moderate (approx 4.5% to 0.005%) 36 Low (approx 0.0001%) Sampling should be conducted across all surfaces of differing material, wear, cleaning regime or grow. The BS 7976 standard states that 'at least four tests end up being carried out but in larger areas one test per 250m2 is appropriate'. Sampling should identify associated with different slip resistance and share evidence of uniform PTV's across similar areas. It will be noted that it really is not you are able to and uncomplicated as conducting BS 7976 pendulum testing and filling out the floor off as a 'low likelihood of slip'. Many external factors can significantly affect the frictional demands of pedestrians using the surface. The HSE have launched a robust risk assessment method in the 'Slips Potential Model' that will be used in conjunction with any slip resistance dimensions.

Advantages The pendulum continues to be the only method expressly recommended by the HSE for slip resistance measurement. Factors contributing to its success are; An extensive history of correlation between PTV's and slip incident data. System is widely accepted by experts with regards to most accurate method of measuring slip resistance in situ. The accurate modelling of the hydrodynamic squeeze film formed in a contaminated put. This allows technique to are the reason for the hydraulic uplift effects which possess a critical impact on slip immunity level. Portability and versatility, the pendulum tester could be used for a test run discrete areas down to 126mm, slopes up to 10 degrees, stairs using a variety of dry and wet contaminants. Different rubber compounds can be employed to represent the likely traffic classes. Industry recognition means the pendulum method could be used for specification and certification of flooring surfaces as well as forensic investigation. Pendulum testing provides strong evidence that statutory obligations have, or have not, been fulfilled.

Disadvantages The pendulum is not used universally for subsequent reasons; Operation requires experienced technicians purchase reliable studies. Mistakes made by those with inadequate training can significantly affect good results. The requirement for trained and experienced operatives means the method is often expensive. Purchase and repair of the pendulum tester additionally very display. Testing takes around 30-45 minutes per sample due towards complex operation technique. This is far longer than alternative, less accurate, test methods. Conclusion BS7976 pendulum testing remains the most accurate and most generally recognised measurement of slip resistance. Whilst relatively expensive in relation to time and funds the method produces highly accurate results suitable for risk assessment, floor specification and certification and legal proceedings. Grip Potential is united states wages consultancy providing pendulum slip testing as part of their holistic manner of slip risk assessment. Staff have extensive experience when using the pendulum being a basis for risk assessment and will have unbiased great tips on risk mitigation measures. To arrange an assessment call 0845 163 0 163 or email info@grip-potential.com. Further information can be seen on Grip Potential's website www.grip-potential.com and also the HSE's slips mini site www.hse.gov.uk/slips. Additional info sheets available include BS 7976 The Pendulum Method and slip risk reduction tips.

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Louise G is a prolific business author and business consultant. Louise has been instrumental your market development of successful marketing strategies for many leading online marketers. Examples of Louises work can be discovered at http://www.grip-potential.com/ for pendulum testing