Failure Reporting; Maintenance Completion - ABB Triguard SC300E Safety Manual

Each processor, when in normal operation, should have its front key in the run position and the
keys removed to further prevent unauthorised access. It is the responsibility of the end user to
ensure proper maintenance control of the Triguard SC300E Safety System.

6.5 Failure Reporting

All hardware or software failures or faults that occur during the operational life of the Triguard
SC300E Safety System must be logged and analysed for their safety impact.
All failures or faults must be reported back to the system supplier.
It is the responsibility of the end user to ensure that an accurate reliability database is
maintained for all equipment used for safety related functions.

6.6 Maintenance Completion

When a modification or maintenance cycle has been complete and the system is restored to
operating health, the TriBuild Maintenance Station should be disconnected from the running
SC300E System.
Issue 5 - September 2006
Page 38 of 65