Functional safety of electrical/ electronic/ programmable electronic safety-related systems - Guidelines on the application of IEC 61508-2 and IEC 61508-3BS EN 61508 6: 2002 contains information and guidelines on IEC 61508 2 and IEC 61508 3. Annex A gives a brief overview of the requirements of IEC 61508 2 and IEC 61508 3 and sets out the functional steps in their application. Annex B gives an example technique for calculating the probabilities of hardware failure and should be read in conjunction with 7. 4. 3 and annex C of IEC 61508 2 and annex D. Annex C gives a worked example of calculating

for example manual call points that are intrinsically safe or for use in hazardous conditions

Who is BS EN 755-4- Tolerances on dimensions and form for aluminium square bars for

Prevent unauthorized users from changing or disabling the access control settings

EN 50136-1-2

maintenance and safety of halon 1301 total flooding fire extinguishing systems in building or plant

Risk assessment quantifies or qualitatively describes the risk and enables managers to prioritize risks according to their perceived seriousness or other established criteria

Tolerances on width

banqueting and entertainment

Why should you use this standard

The industrial washing test procedure has been included because this kind of washing is frequently applied to many types of protective clothing

Renovation of uncoated or damaged areas

2 with quality characteristics altered as a result of such further processing