Safety Manual - ABB 2600T Serie Bedienungsanleitung

ADDITIONAL INSTRUCTIONS FOR IEC61508 CERTIFIED DEVICES
(Digits 8 or T under output options)

SAFETY MANUAL

SAFETY PHILOSOPHY
The 266 Pressure Transmitters are field devices designed according to the requirements of the standard IEC61508 for the Safety
Related Systems. Standard currently used focus on individual parts of all the safe instrumentation used to implement a safety fun-
ction. The IEC61508 defines requirements related to all the system that normally comprises initiating devices, logic solver and final
elements. It also introduces the concept of Safety lifecycle defining the sequence of activities involved in the implementation of the
safety instrumented system from conception through decommissioning.
For a single component it is not correct to define a SIL level. The term SIL (Safety Integrity Level) refers to the complete safety loop
therefore the single device shall be designed in order to be suitable to achieve the desired SIL level in the entire Safety Loop.
Application
The 266 Pressure Transmitters are intended to be applied for safety relevant application in the process industry. They are suitable to
be used in SIL2 applications when applied as single channel and in SIL3 applications when applied with a double channel with archi-
tecture 1oo2. Special attention has to be given to the separation of safety and non safety relevant use.
Physical Environment
The transmitters are designed for use in industrial field environments and must be operated within the specified environmental limits
as indicated in the Transmitter Data Sheet.
Role and Responsibilities
All the people, departments and organizations involved in the life-cycle phases which are responsible for carrying out and reviewing
the applicable overall, E/E/PES (Electrical/Electronic/ Programmable Electronic System) or software safety lifecycle phases of a
Safety Instrumented System shall be identified. All those specified as responsible for management of functional safety activities shall
be informed of the responsibilities assigned to them. All persons involved in any overall, E/E/PES or software safety lifecycle activity,
including management activities, should have the appropriate training, technical knowledge, experience and qualifications relevant to
the specific duties they have to perform.
MANAGEMENT OF FUNCTIONAL SAFETY
For each application the installer or the owner of a safety system must prepare a Safety Planning which must be updated throughout
the Safety Life-cycle of the Safety Instrumented System. The safety planning shall include the Safety instrumentation management.
The requirements for the management of functional safety shall run in parallel with the overall safety lifecycle phases.
Safety Planning
The Safety Planning shall consider:
• policies and strategies for achieving safety;
• safety life-cycle activities to be applied, including names of responsible persons and departments;
• procedures relevant to the various life-cycle phases;
• audits and procedures for follow up.
INFORMATION REQUIREMENTS (to be made available by the plant owner)
The information shall comprehensively describe the system installation and its use in order that all phases of the overall safety life-
cycles, the management of functional safety, verification and the functional safety assessment can be effectively performed.
Overall Safety Life-cycle Information
The overall safety lifecycle shall be used as the basis for claiming conformance to the standard IEC61508. The lifecycle phases consi-
der all the activities related to the Safety Instrumented System (SIS) from the initial concept through design, implementation, operation
and maintenance to decommissioning.
Applicable LAWS and Standards
All applicable general Laws and Standards related to the allowed operations of the equipment, as EU-Directives shall be collected.
The plant owner shall produce a Regulatory Requirements List document.
System Safety Requirement Assignment I/O System Response Time
The total system response time is determined by the following elements:
- Sensor detection time,
- Logic solver time;
- Actuator response time;
The total system response time must be less than the process safety time. To ensure a safe operation of the system, the scan rate
of each section of the logic solver multiplied by the number of channels shall be taken into account together with the safety time of
actuator and sensor response time.
System Structure
System configuration drawings shall be available to describe the equipment and interfaces required for a complete operational sy-
stem. The system must be fully operational before start-up.
Safety Requirement Allocation
Each safety function, with its associated safety integrity requirement, shall be allocated to the designated safety related systems ta-
king into account the risk reductions achieved by the other technology safety-related systems and external risk reduction facilities, so
the necessary risk reduction for that safety function is achieved. The allocation indicated shall be done in such a way that all safety
functions are allocated and the safety integrity requirements are met for each safety function.
Safety Routines
Safety additional requirements may be defined in order to ensure the correct functionality of sequences in the Safety Instrumented
System.
2600T Series Pressure transmitters 266 models | SOI/266-XC 19