Almost all standards related to the  functional safety of systems/equipment and machinery dedicate at least one section to the Software. The IEC 61508 is the standard that best defines the activities, the methodologies, the techniques and the requirements needed to achieve a "safe" software, that is, a type of software that is able to reliably operate in critical safety functionality, and whose failure can produce catastrophic consequences such as serious injury, loss of life, damage to material goods, economic damage, or leaks in the safety of the system/apparatus or machine.

HINTSW - T & T Systems, for the realization of a software whose strength and reliability is to reduce the probability of failure at a level compatible with that required for critical security application, adopts the development model proposed by the IEC 61508- 3 based on a particular software life cycle, called the safety of the software life cycle. This life cycle rigorously establishes the business methodologies, the techniques and the documentation to be realized so that the software can be reasonably considered safe. The first phase provided for in the security life cycle adopted by HINTSW - T & T Systems is the phase  of design and planning of software.

Detailed information

During the design and planning of the SW, HINTSW - T & T Systems is able to perform the following tasks:

  • Definition and drafting of the SW quality plan in which, inter alia, is planned in detail the SW of the safety life cycle with the relative activities, the methodologies and the manufacturing techniques.
  • Update of the system safety plan.
  • Definition and drafting of the SW documentation plan.
  • Definition and drafting of the SW verification and validation (V & V) plan
  • Drafting of the plans of the SW integration tests  and of the HW/SW. integration.
  • Drafting of the SW configuration plan.
  • Drafting of the SW maintenance plan.


The SW development V model 



The main standards for the functional safety prescribe the adoption of a particular software life cycle, called "the software security lifecycle."

The requirements of this cycle cover all aspects involved in the management of a software product, the processes of "Quality Assurance", the modification and maintenance procedures; from the methods of analysis to the testing techniques. As for software development, the standards related to safety almost always suggest to adopt the so-called "V" model.

The V lifecycle model is a well-structured method, in which each phase is implemented starting from the documentation produced in the previous step, and starts from the principle that the procedures for checking the conformity of the software with respect to the specifications, must be executed coming from the design phases.


More information


Tel.: +39 02.2897.0440; +39 02.2871.305

General info: This email address is being protected from spambots. You need JavaScript enabled to view it.

Commercial info: This email address is being protected from spambots. You need JavaScript enabled to view it.
Commercial contact: +39 348.600.32.82

Registered office: I-20129 Milano, via Plinio 1
Office: I-20127 Milano, via Natale Battaglia, 27

Read more ...



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.

Read more ...



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

Read more ...

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.

Read more ...



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

Read more ...

Go to top