Dear Sir
In Frame 5 m/c Mark6e the m/c keeps on running with diagnostic alarms.
My question is what are those diagnostic alarms and what are their significance please help
Regards

 

Dear Sir,

Diagnostic Alarms indicate problems with the Mark VIe turbine control system hardware and/or software. In Vol. II of the Mark VIe System Guide, GEH-6721, you will find explanations of the Diagnostic Alarms.

For example, if the PDIO is annunciating Diagnostic Alarm Number 96 (just an example), go to the section of GEH-6721, Vol. II, for the PDIO I/O Pack and go the the Diagnostic Alarm section and find 96 and it will give a description of the alarm condition and a description of what to check or try to resolve the Alarm.

While the unit may continue to run, Diagnostic Alarms can be precursors to turbine trips because of failed or failing inputs or outputs. Just because the unit doesn't trip or shutdown DOES NOT mean the condition being alarmed is not serious and could eventually result in a trip or worse. ALL alarms should be investigated and resolved as quickly as possible--both Process Alarms and Diagnostic Alarms. Failure to resolve alarms can result in loss of production, reduced reliability and even machine damage.

An operator's prime responsibility is to understand and take appropriate action for any alarm which is annunciated. If that means notifying a technician or a mechanic to troubleshoot and resolve the alarm, then so be it. All active and unresolved alarms (Process and Diagnostic) should be understood and logged in writing for subsequent shift operators--and Operations Managers should review all active and unresolved alarms every day, notifying appropriate personnel to work to resolve the condition(s) as quickly as possible. If the alarm condition is deemed erroneous it should be resolved with the help of the control system supplier or packager.

Hope this helps!