1 / 9

IEC 61508 Standard – What is it?

IEC 61508 Standard – What is it?. IEC 61508 is a Standard for the functional safety of Electric / Electronic / Programmable Electronic (E/E/PE) Safety related systems. 1. Concept. 2. Overall scope definition. 3. Hazard and risk analysis. 4. Overall safety requirements. 5.

mei
Télécharger la présentation

IEC 61508 Standard – What is it?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. IEC 61508 Standard – What is it? IEC 61508 is a Standard for the functional safety of Electric / Electronic / Programmable Electronic (E/E/PE) Safety related systems © Palaniappan R Kannan PMP.,CFSE 1

  2. 1 Concept 2 Overall scope definition 3 Hazard and risk analysis 4 Overall safety requirements 5 Safety requirements allocation Overall planning 9 Safety related systems: E/E/PES 10 Safety related systems: other technologies 11 External risk reduction facilities 6 Overall operation & maintenance planning 7 Overall validation planning 8 Overall installation and commissioning planning Realization (see E/E/PES safety lifecycle) Realization Realization 12 Overall Installation and commissioning Back to appropriate overall safety life cycle phase 13 Overall safety validation 14 Overall operation and maintenance and repair 15 Overall modification and retrofit 16 Decommissioning or disposal IEC 61508 - Overall Safety Lifecycle © Palaniappan R Kannan PMP.,CFSE 2

  3. Purpose of IEC 61508 To provide a right safety system for the facility and to avoid under protection and over protection, both of which costs money. Under protection results in increased risk cost while, Over protection results in higher procurement and maintenance cost. © Palaniappan R Kannan PMP.,CFSE 3

  4. IEC 61508 – Where recommended? • Following are the areas in the process industry that IEC61508 is applicable: • Emergency Shutdown System (ESD). • Fire & Gas System (F&G). • Turbine Control. • Burner Management. © Palaniappan R Kannan PMP.,CFSE 4

  5. Functional Safety Assessment – What is it? • Safety System Project has various phases in its lifecycle. • Functional Safety Assessment is a critical activity that checks and reviews output of each phase to make sure that the Functional Safety has actually been achieved. • Based on the Risk level (Safety Integrity Level) an Independent person or an independent organization is required to carry out Safety Assessment. © Palaniappan R Kannan PMP.,CFSE 5

  6. Functions of Assessment • To review that hazard and risk assessments and make sure their recommendations implemented or resolved. • To make sure the Safety Instrument System is designed, constructed and installed in accordance with Safety Requirements Specifications. • To review Safety Validation Planning and make sure all Validation activities have been completed. • To make sure recommendations from previous assessments and audits are resolved, and plans for future are in place. • Outputs of assessments are in the form of recommendations. © Palaniappan R Kannan PMP.,CFSE 6

  7. Safety System Audits Functional Safety System Audits are part of Functional Safety Assessment, applicable to Operation, Maintenance and Repair phase of the lifecycle. This makes sure that all the Safety Assessment functions are complied with and documented. This also makes management and staff aware of degree of implementation and effectiveness of their Safety Instrument System. This should be a periodic (say, once in three years), systematic and independent examination. © Palaniappan R Kannan PMP.,CFSE 7

  8. Safety System Audit - Reports The outputs of Safety System Audits are in the form of reports. These are in the form of action plans for improvement and Safety Instrument System(SIS) implementation as per IEC standards. These reports shall be verifiable. © Palaniappan R Kannan PMP.,CFSE 8

  9. Facility HSE Audit Safety Instrument System Audits can be part of HSE audit as called for in EPA and OSHA. © Palaniappan R Kannan PMP.,CFSE 9

More Related