Please Note: If you select the redline option, you will receive the official standards in both English and French. However, the separate redline document is only available in English. This collection includes: IEC 61508-1 Ed. 2.0 b:2010 - Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 1: General requirements IEC 61508-2 Ed. 2.0 b:2010 - Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 2: Requirements for electrical/electronic/programmable electronic safety-related systems IEC 61508-3 Ed. 2.0 b:2010 - Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 3: Software requirements IEC 61508-4 Ed. 2.0 b:2010 - Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 4: Definitions and abbreviations IEC 61508-5 Ed. 2.0 b:2010 - Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 5: Examples of methods for the determination of safety integrity levels IEC 61508-6 Ed. 2.0 b:2010 - Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 6: Guidelines on the application of IEC 61508-2 and IEC 61508-3 IEC 61508-7 Ed. 2.0 b:2010 - Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 7: Overview of techniques and measures Order the redline "commented" version! You will get the official 7 parts of 61508, and in addition, download a single-file compilation known as S+ IEC 61508. With comments from a world leading expert, S+ IEC 61508 contains the following features: track changes in red, highlighting all changes made to the technical content of edition 1.0 hundreds of comments by a leading expert in Functional Safety, indicated by a yellow-background number. Mouse over a number to display a pop-up note with the comment figures associated with comments, indicated by a green paperclip additionally, a summary of comments and attachments is also provided at the end of the file View sample pages here. (PDF)