According to the operating environment and to the industrial sector, there are different types of safety calculations, that the  standards related to functional safety require to execute; first of all the calculations useful to evaluate the integrity and the safety of an apparatus/system, but also to assess the reliability of an apparatus, the probability of success of a safety function, etc. Such calculations can be carried out taking account of complex methodologies and of modelling techniques of stochastic phenomena.

HINTSW -T & T Systems knows the main methods and techniques needed to perform safety calculations applicable to the main technical and industrial sectors:

  • Electrical/electronic/programmable electronic safety-related systems;
  • Process industry;              
  • Public transport ;
  • Machinery.

Electrical/electronic/programmable electronic safety-related systems (E/E/PE)


  • Relevant international standards: IEC 61508-1; IEC 61508-2; IEC 61508-5; IEC 61508-6.
  • European directives: PED (97/23/CE); ATEX (94/9/CE); Machinery (2006/42/CE); eccetera.
  • Calculations performed: SIL determination (safety integrity level);  Probability of failure of E/E/PE systems


Process industry



Public transport




Macchinario 1 

  • Relevant international standards: EN 62061; ISO 13849-1;
  • European directives: Machinery (2006/42/CE).
  • Calculations performed: Probability of Failure of the SRCF (safety related control function).



HINTSW - T&T Systems has been operating for over a decade in the field of functional safety concerning the main industrial sectors and public transport.

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HINTSW division provides highly professional and specialized consultancy in the development of programmable electronic system used in safety-critical applications.

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Safety certification


The safety certification of a system or equipment is often an arduous challenge to win, HINTSW provides all the support and know-how necessary to win.

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HINTSW, drawing from their expertise, offers a wide range of services in the field of vocational training.

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