Suites 2 & 3, Greenbank House, Swan Lane,
Hindley Green, Wigan, WN2 4AR, United Kingdom
Tel: +44(0)1942 522180 / 522153, Fax: +44(0)1942 522179
pim@dcvg.com or sales@dcvg.com

Pipeline Operators should be aware of the fact that a number of instrument and pipeline survey companies are offering sham (fraudulent, deceptive, dishonest) techniques as DCVG. These sham techniques which are based on variations of CIPS (Close Interval Potential Surveys) bear no direct relationship to the true DCVG technique as invented in the early 80s by John Mulvany.

Purveyors of these fraudulent methods obviously do not understand how the true DCVG technique works and also can have very little understanding of the CIPS technique not to realise that the limitations and errors built into CIPS prevent it ever giving data similar in nature and quality to the true DCVG technique.

The CIPS and Sham DCVG techniques are set out diagrammatically below and described in detail at www.aprt.com

True DCVG must utilise an analogue meter for coating fault location during surveys.

True DCVG is more than just location. Coating fault characteristics which can be determined only by an analogue meter are very important and are required for the decision making processes of what to rehabilitate.