GT Engineering is member of the Technical Committees of the following Standards: IEC 61508 series, IEC 61511-1, IEC 62061 and ISO 13849-1.
We support users in the reliability assessment of Safety and Production Systems. From a Hazard and Operability (HAZOP) study, we move to a Layer of Protection Analysis (LOPA) to a SIL allocation.
We can than help designing each Safety Instrumented System and calculate the Sil level reached.
We organise training on all the aspects of Functional Safety and we are lecturers on Functional Safety at Brescia University and at the Milan Polytechnic (School of industrial and Information Engineering).
P9: a comparison between RBD and Markov models for the analysis of Safety Instrumented Systems
Within this article, the main international standards involved in Functional Safety and how they apply the Reliability Engineering Theory are investigated.
PT 10: Functional safety in high demand:The Markov model of Category 2 according to ISO 13849-1
This article is part of a series of articles written on Functional Safety of Machinery. Last year we presented the Category B, 1 and 2. Category 2 is the most difficult to understand since it is in theory a single channel architecture but that allows...
PT 11: Functional safety in high demand: Categories 3 and 4 according to ISO 13849-1
This article is part of a series of articles written on Functional Safety of Machinery. We recently introduced one of the two standards used to design Safety Control Systems in High Demand: ISO 13849-1. We remind that ISO 13849-1 is based upon a comp...
PT 12: Functional Safety in High Demand: Introduction to IEC 62061
This article is part of a series of articles written on Functional Safety of Machinery. We recently introduced one of the two standards used to design Safety Control Systems in High Demand: ISO 13849-1. We will now present indicated in the IEC 62061....
Proof Test and Diagnostic Coverage
THE DOUBT: What is the difference between a Proof Test and a Diagnostic Test?
CONSIDERATIONS: The Proof Test concept is coming from IEC 61508 and it is im...
High versus Low Demand
THE DOUBT : What does it mean that a Safety Control Systems is operating in High or in Low Demand and why is it important to know it?
CONSIDERATIONS:...
Machinery Directive 2006/42/EC: Introduction
The Machinery Directive contains 29 articles and 12 annexes and is addressed to the Member States, which are obliged to implement its requirements in national legislation.
Machinery Directive
