30.97 15 qer 2005
IEC
TC 65/SC 65A
International Standard
WITHDRAWN
IEC 61508-4:1998 ED1
ABANDON
IEC 61508-4/AMD1 ED1
30.97
End of interruption of work - split/merged
15 qer 2005
PUBLISHED
IEC 61508-4:2010 ED2