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RPF Binder Distributor Task Team Feedback

RPF Binder Distributor Task Team Feedback. 21 May 2003 Pietermaritzburg. Task Team Mandate. A resolution was passed at the May 2002 RPF to form a task team to address issues relating to binder distributors namely: Appropriate validation period for calibration certificates

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RPF Binder Distributor Task Team Feedback

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  1. RPF Binder Distributor Task Team Feedback 21 May 2003 Pietermaritzburg

  2. Task Team Mandate A resolution was passed at the May 2002 RPF to form a task team to address issues relating to binder distributors namely: • Appropriate validation period for calibration certificates • Develop a rational method for the ‘bakkie’ test • Compliance criteria for transverse distribution • Spray tolerances for various binders • Protocol for flushing and testing spray bars on-site in line with HSE requirements

  3. Recommendations of Task Team Agreement was reached by the Task Team on the following issues: • 12 month validation period for calibration certificates • Test method protocol for ‘bakkie’ test • ‘Bakkie’ test tolerances • ‘Bakkie’ test register • Spray rate tolerances Where applicable the above proposals to be included in the revision of TRH 3

  4. ‘Bakkie’ test tolerances

  5. Recommendations of Task Team Agreement was reached by the Task Team on the following issues: • 12 month validation period for calibration certificates • Test method protocol for ‘bakkie’ test • ‘Bakkie’ test tolerances • ‘Bakkie’ test register • Spray rate tolerances Where applicable the above proposals to be included in the revision of TRH 3

  6. Spray rate tolerances Max variation from specified rate to be largest value of: • +- 0.06 l/m2 for any binders (net cold) • +- 5% at spray temperature for • Conventional binders (pen, cut, emul) • PMB’s • Bitumen rubber • +- 5% at net cold for bitumen emulsions Payment reduction factors and remedial measures Min lot size of 4,000 litres

  7. Best practice related to binder distributors & the environment • Update Sabita Manual 8 to incorporate best practice wrt: • Latest HSE legislation • Transporting, storage and application of binders on-site • Latest Austroads publication ‘Bitumen Sealing Safety Guide’ • Draft document to be submitted to Sabita’s COSHEC focus group for approval

  8. Outstanding issues • Complete investigation into ‘pad’ test to measure transverse & longitudinal distribution • Revision of TMH 2 ‘fixed pit calibration of binder distributors’ • Update COTO ‘General specifications for roads & bridge works’

  9. Summary • Concern over updating existing COLTO & TRH 2 documents • Above recommendations to be circulated for comments tdistin@colas.co.za • Although mandated tasks are complete the task team will continue to meet to address outstanding issues

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