Field protocol for the safe sampling of
Copyright © 2012 Strategic Alliance | All rights reserved
|Chief Engineer Email 12 January 2012 on commencement|
|Link to QTMR specifications page for MRTS17 & 18|
|Details of the QTMR Sampling device from BFP Engineering|
|Details of the AAPA sampling device from MBE in Victoria|
|Link to the Working Group References|
|Click on the icon to
download the PDF file and
then save to you PC
EXTRACTS FROM MRTS 17 & 18
Sampling point (point of delivery)
Where the product is transferred to the sprayer for hot sealing work and
from the asphalt binder storage for asphalt production. Sample before or
during transfer of the product.
Sealing or other works
A lot shall consist of a homogeneous quantity of bitumen of the same class
Lot size Bitumen Tightened 60 tonnes Normal 150 tonnes Relaxed 300 tonnes
PMB Tightened 24 tonnes Normal 60 tonnes Relaxed 120 tonnes
Sample per lot = 1 Litre to Administrator and 1 Litre to Contractor
A lot shall comprise the discrete quantity of bitumen in the Contractors
storage tank at the commencement of asphalt production.
A new lot when a) bitumen or PMB is added b) bitumen not added for 14 days
PMB not added for 3 days
Bitumen Tightened 2nd lot Normal 4th lot Relaxed 10th lot
PMB Tightened every lot Normal 2nd lot Relaxed 5th lot
Sample = 1 Litre to Administrator and 1 Litre to Contractor
To be undertaken or arranged by Contractor
Bitumen Viscosity at 60°C (Pa.S)
PMB Torsional Recovery at 25°C & Softening Point
Testing frequency: not less than every second sample taken from the lots.
COMMENCEMENT OF POINT OF DELIVERY SAMPLING
On 12 January 2012 the QTMR Chief Engineer communicated with AAPA their
intention to commence sampling in contracts.
"TMR has discussed the requirement for sampling with AAPA, and has assisted them
in developing safe sampling equipment. It has been agreed with AAPA that TMR will be
fully enforcing the requirements of MRTS17 and MRTS18 from 2 April 2012, to allow
time for industry to obtain the safe sampling equipment.
A link to the full email and appendices is available here
IN-FIELD SAMPLING DEVICES
It has not been possible to agree on a standard device for field sampling of bitumen
and PMB. A number of options are available including the QTMR developed device
with BFP Engineering and the AAPA one from MBE in Victoria. AAPA members have
also embarked on the use of existing access points or modifications to the AAPA and
QTMR devices. Contact details of the device manufacturers are included in the Project
With examples from AAPA members, BCC has provided assistance in the development
been circulated with the final DRAFT released at the end of March 2012.
To accommodate the lack of agreement on the sampling device, the SWMS will include
a general overview of the method and NOT reference the specific requirements of the
device being used for the sampling.