Functional safety of electrical/ electronic/ programmable electronic safety-related systems - Examples of methods for the determination of safety integrity levelsBS EN 61508 5: 2002 provides information on: the underlying concepts of risk and the relationship of risk to safety integrity (see annex A) a number of methods that will enable the safety integrity levels for the E E PE safety relatedsystems, other technology safety related systems and external risk reduction facilities to be determined (see annexes B, C, D and E).

Prevent unauthorized users from changing or disabling the access control settings

NOTE The references should be considered as basic references to methods and tools or as examples

This standard should be used where appropriate with product standards which specify performance requirements for joints

planning applicants and their agents and consultants

Site managers

Calibration and classification using continual torque application

conditioning

Electrical supply and electrical installations

service and/or rights exchanged

Recommended methods for the assessment of levels and surface regularity and for the determination of in situ crushing resistance (soundness) are also given in this standard

IEC 60270:1981

ISBN 0 580 39775 0