SPT Calibrations

Equipe is the UK's leading provider of SPT Calibration testing and provides a service across the UK and also for clients overseas.

The standard is already in place in the UK and Designers should be requesting calibration certificates already. The standard provides a recommended method for measuring the actual energy and also provides specification details for the equipment to be used and currently it is only the SPT Analyzer+ which complies. The standard is, however, inconclusive to the length of period between calibrations and the specific conditions where additional calibrations or more frequent calibrating may be required. Clause 5.1 of 22476-3 is argued by others to be inconclusive but suggests checks should be carried out at six monthly intervals.

Equipe suggest that best practise should be that calibrations are, at a minimum, completed at least annually but the more discerning and prudent Designer should specify more frequent calibrations and in addition calibrations at the commencement of large contracts where multiple rigs and SPT equipment are to be utilised.

To order SPT Calibration Testing CLICK HERE It should also be remembered that the standard refers not only to traditional trip/drop SPT hammers for cable percussion boring but also for chain drivendynamic sampling weights and hydraulic drop weights used to take SPTs.

For further guidance on SPT Calibrations CLICK HERE