Whenever an intervention involving working on or near to an active safety critical item of signalling  equipment takes place, the safety integrity failure risk of the signalling system increases. This risk of failure must be managed by robust testing of the equipment before it is returned to service. Our experience staff follow the SMTH handbook in accordance of relevant instructions, procedures and process controls that apply in order to provide testing solutions safely and efficiently. The SMTH tester plays a vital role in the renewal of assets including renewal of points equipment, ensuring safety critical checks, points correspondence, indication, and correct operation.

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We specialise in:​

• SMTH & G110 

• G110 Author / Checker 

• G110 Lead Testing 

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Including:

• Core Testing

• Cable and Wire testing

• Earth Testing

• Aspect testing

• Point Testing

• Block Testing

• Diversion of Circuits

• Release of controls

• Signal Failure Investigations

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