Current stage: 40.99 Effective date: May 8, 2026
Next stage: DECFDIS Next stage date: May 29, 2026
Originator: IEC
Owner: TC 65/SC 65A
Type: International Standard
ICS: 25.040.40
IN_DEVELOPMENT IEC 61508-2-1 ED1 40.99 Full report circulated: DIS approved for registration as FDIS May 8, 2026