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InstMC FS2016 (Rev 3.0)
Page
10
of
10
Nicol Instrument Engineering Limited
Puts emphasis on life-cycle, and that the user needs to assure that the systems are still
performing to the requirements and assumptions made at the design stage.
Adds security risk assessment to identify the security vulnerabilities of the SIS.
Clarifies on requirements for the basic process control system as a protection layer.
Changes the requirements for hardware fault tolerance.
REFERENCES
#
Description
Version
IEC 61511-1 Functional safety – Safety instrumented systems for the process in-
dustry sector – Part 1 Framework, definitions, system, hardware
and software requirements
First Edition
2003-01
IEC 61511-1 Functional safety – Safety instrumented systems for the process in-
dustry sector – Part 1 Framework, definitions, system, hardware
and software requirements
Edition
2.0
2016-02
AUTHOR
ROBERT (BOB) NICOL
Nicol Instrument Engineering Limited
Bob has been in the process industry, mainly oil and gas, for over 48 years. He has held roles with
design engineering contractors and end users at engineering or senior engineering roles, consultant,
technical authority and subject matter expert.
List of companies worked directly for includes; BP, Shell, Crawford and Russell Inc., Ralph M Parsons,
Borg Warner, Smith and Taylor, South Scotland Electricity board.
For the past four years he has provided independent Functional Safety consulting services, and
training on the IEC 61508 and IEC 61511 standards.