Re-certification services are provided by TIS.
To achieve this we have an QA/inspection department with an extensive range of measuring equipment, and thread gauges.

TIS  can provide an `Annual’ certification package for surface pressure control items. This package ensures that our customer’s  equipment is serviced on a yearly basis, new items replaced if required, and then pressure testing is carried out.
 
TIS  also provide a `Major’ certification package for surface pressure control items. This pacage ensures that our customer’s equipment has an extensive overhaul after every five years. This entails a complete strip down, dimensional inspection, replace new components if required, re-dress with new elastomers and a final pressure test. In addition a Inspection report manual is provided.

In both cases the pressure testing is documented via a chart recorder. Third party witness is available if required.
These packages ensure that TIS customers equipment, will  be `fit for purpose’.