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DIAMOND Precast Concrete Ltd.| 7520 Conrad St | Burnaby, BC V5A 2H7
Tel: 604.415.5181 | Fax: 604.415.5185 |
www.DiamondPrecast.comSection: 10
Date: 12/03/2015
Edition 1, Revision: 0
Page: 1 of 2
Section 10: Calibration of Measuring and Testing Equipment
A.
The QCM is responsible for the accuracy of all measuring and testing of equipment as described
in Exhibit# 18
B.
The QCM is responsible for scheduling test gauge renewal or calibration.
C.
All calibration of test gauges and measuring of equipment will be done at the frequencies
indicated below unless there is reason to doubt the accuracy of the equipment:
1.
Water flow meter is calibrated every 180 days, but at our plant done every week during mixer
calibration by actual measurement in measuring container.
2.
Slump cone dimensional verification is performed every 90 days
3.
Air meters are calibrated every 90 days. The date of calibration and I.D. number is marked on the
back of each gauge
4.
Field thermometers are calibrated yearly with reference thermometer and records are maintained
and monitored as per CSA A23.2-09
5.
Max. / Min thermometers are calibrated yearly with reference thermometer and records are
maintained and monitored as per CSA A23.2-09
6.
Reference thermometers is calibrated once
7.
The calibration of the scale is to be done every 6 months by reference certified standard weights
8.
Calibration of admixture flowmeter is being done manually. We measure every week the quantity
flowing and set accordingly and we have not noticed any flow change thereafter.
9.
Compression machine is calibrated yearly.
10. Compression machine rate of loading done weekly and monitored as per Clause 6.2 of test
method 9C of CSA A23.2-009 (between 0.15 and 0.35MPa/S
–
1.21KN/s and 2.82KN/s)
11. Records of Neoprene pad usage count are maintained. Log sheet is created for each time of the
usage of pads. (100 times usage for 50 MPa strength pad and 50 times for 60 & 70 MPa strength
pad
12.
Initial curing temperatures (Max. / Min) of concrete cylinders are being monitored and recorded
as per Clause 8.3.2.1 of test method 3C of CSA A23.2-09. Reading is recorded two times in a day
during starting of the day and normal temperature is also recorded.
13. Concrete temperature during the curing cycle as per Clause 19.5.1 of CSA A23.4-09 standard.
Reading is recorded two times in a day during starting of the day and normal temperature is also
recorded.
14.
Concrete cylinder dimensions are daily recorded (Minimum 3 cylinders per day
15.
Planes of the compression machines platens are recorded and monitored by feeler gauge and
straight gauge and is done monthly basis.
D.
Non Chloride Admixture
is added via the Mixer’s automated
flowmeter system; the appropriate
dosing amount is set by the manufacturer. Technical Specification and MSDS documents are
documented.
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