Chapter 3 Risk Assessment And Safety Level; Risk Assessment - Mitsubishi Electric MELSEC iQ-R Series Safety Manual

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RISK ASSESSMENT AND SAFETY LEVEL
When using safety programmable controller, perform risk assessment on target equipment while observing ISO12100: 2010,
and select appropriate SIL and PL, as well as reduce the risk conforming to ISO13849-1: 2006, IEC61508: 2010, and
IEC62061: 2012.
This chapter describes the risk assessment, risk reduction, and overview of SIL and PL.
3.1

Risk Assessment

The risk assessment is to clarify potential hazards in a machine and assess the degree of the hazards.
The following shows a risk assessment and risk reduction procedures. These procedures are standardized in ISO12100:
2010 Safety of machinery -- General principles for design -- Risk assessment and risk reduction.
3 RISK ASSESSMENT AND SAFETY LEVEL
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3.1 Risk Assessment