Binder Distributor Accreditation

11 May 2006RPF Durban

Progress since November 2005

Task team meeting held 9 May• Review best practice guideline

document• Slotted tray versus ‘bakkie’ test• Implementation of new accreditation

scheme

Tray

Bucket

versus

15 – 50 %

Spray fan

Nozzle

Output distribution of a single nozzle discharge10 mm

240

mm

300 mm

Slotted tray vs ‘bakkie’Slotted tray• Volume measurement• Low viscosity oil• High capex and

running cost• Sensitive to

– Sprayer line up– Spray bar height– Fan angles

• Poor repeatablity• Does not reflect field

performance

‘Bakkie’• Mass measurement• Test project binder• Inexpensive

equipment

• Not sensitive to – Sprayer line up– Spray bar height– Fan angles

• Good repeatabilty• Reflects field

performance

Recommendations

• Replace slotted tray with bakkie test• Measure spray angle of nozzles• Publish new document as a guideline

for certifying and monitoring field performance of BD

• Approach ECPA and GPTRW to outsource calibration to a national service provider