Yokogawa RotaMASS 3-Series - Manual (Page 252)

A2 SAFETY INSTrUMENTEd SYSTEMS INSTAllATION
A2-4 IM 01R04B04-00E-E 8th edition March 01, 2011 -00 All Rights Reserved. Copyright © 2003, Rota Yokogawa
A2.2.12 Environmental limits
The environmental limits of the Yokogawa ROTAMASS 3 Series Coriolis Mass Flow and Density Meter are
specified in the User’s Manual, ROTAMASS 3 Series Coriolis Mass Flow and Density Meter, Integral Type
RCCT3, Remote Type RCCF31 + RCCS3, Remote Type RCCR31 + RCCS3, IM 01R04B04-00E-E.
A2.2.13 Application limits
The application limits of the Yokogawa ROTAMASS 3 Series Coriolis Mass Flow and Density Meter are
specified in the User’s Manual, ROTAMASS 3 Series Coriolis Mass Flow and Density Meter, Integral Type
RCCT3, Remote Type RCCF31 + RCCS3, Remote Type RCCR31 + RCCS3, IM 01R04B04-00E-E. If the
flowmeter is used outside of the application limits the reliability data listed in A2.2.9 becomes invalid.
A2.3 definitions and Abbreviations
A2.3.1 definitions
Safety Freedom from unacceptable risk of harm
Functional Safety The ability of a system to carry out the actions necessary to achieve or to maintain a
defined safe state for the equipment / machinery / plant / apparatus under control of
the system
Basic Safety The equipment must be designed and manufactured such that it protects against
risk of damage to persons by electrical shock a other hazards and against
resulting fire and explosion. The protection must be effective under all conditions of
the nominal operation and under single fault condition
Verification The demonstration for each phase of the life-cycle that the (output) deliverables of
the phase meet the objectives and requirements specified by the inputs to
the phase. The verification is usually executed by analysis and / or testing
Validation The demonstration that the safety-related system(s) or the combination of safety-
related system(s) and external risk reduction facilities meet, in all respects,
the Safety Requirements Specification. The validation is usually executed by testing
Safety Assessment The investigation to arrive at a judgment - based on evidence - of the safety
achieved by safety-related systems
Further definitions of terms used for safety techniques and measures and the description of
safety related systems are given in IEC 61508-4.
A2.3.2 Abbreviations
FMEDA Failure Mode, Effects and Diagnostic Analysis
SIF Safety Instrumented Function
SIL Safety Integrity Level
SIS Safety Instrumented System
SLC Safety Lifecycle