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Reliability data safety instrumented systems SIS from the functional safety analysis example critical instalation
Description
The dataset represents the results of an example of functional safety analysis systems is presented below. It is based on a control system, which consists of some basic components like sensors, programmable logic controllers and valves. It is a part of petrochemical critical installations. The communication between sensor logic controllers and actuators is implemented by wired devices vulnerable to cyber attacks.
An example of the control and protection system with safety instrumented system (SIS)
From the risk assessment the safety integrity level for given safety function overpressure protection pipeline was determined as SIL3. In industrial practice such level requires usually to be designed using a more sophisticated configuration. Safety function (overpressure protection) is implemented in distributed safety instrumented system.
RBD model overpressure safety instrumented system SIS in the critical installation
The required SIL for entire distributed E/E/PE or SIS system is determined in a process of risk analysis and evaluation. It has to be verified in the process of probabilistic modeling, taking into account its subsystems including networks. In situation of distributed control and/or protection systems operating in a network it is necessary to consider also potential failures within such network.
RBD model SIS (E/E/PE) system including the industrial computer network
The average probability of failure on demand PFDavg is calculated according to formula:
where: PFDavgSYS - average probability of failure on demand for the SIS system, PFDavgS - for the sensor, PFDavgNet - average probability of failure on demand for the network, PFDavgPLC - for the PLC, PFDavgA - for the actuator.
Dataset file
hexmd5(md5(part1)+md5(part2)+...)-{parts_count} where a single part of the file is 512 MB in size.Example script for calculation:
https://github.com/antespi/s3md5
File details
- License:
-
open in new tab
CC BYAttribution - Raw data:
- Data contained in dataset was not processed.
- Software:
- CARE BQR
Details
- Year of publication:
- 2020
- Verification date:
- 2020-12-17
- Creation date:
- 2012
- Dataset language:
- English
- Fields of science:
-
- Automation, electronic and electrical engineering (Engineering and Technology)
- environmental engineering, mining and energy (Engineering and Technology)
- DOI:
- DOI ID 10.34808/y5yk-7e53 open in new tab
- Verified by:
- Gdańsk University of Technology
Keywords
- functional safety
- safety integrity level
- safety instrumented system
- control system
- critical instalation
References
- publication Determining and verifying the safety integrity level of the safety instrumented systems with the uncertainty and security aspects
- publication Procedure based functional safety and information security management of industrial automation and control systems on example of the oil port installations
- publication Safety integrity level verification for safety-related functions with security aspects
- publication Integrated functional safety and cyber security analysis
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