Reliability data safety instrumented systems SIS from the functional safety analysis example critical instalation - Open Research Data - Bridge of Knowledge

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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.

Illustration of the publication

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.

Illustration of the publication

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.

Illustration of the publication

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:

Illustration of the publication

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

SIS - BQR.zip
182.4 kB, S3 ETag ed76ab261c9beb7f705696d05818d0a5-1, downloads: 22
The file hash is calculated from the formula
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
download file SIS - BQR.zip

File details

License:
Creative Commons: by 4.0 open in new tab
CC BY
Attribution
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

References

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