Special features of condition management systems improving quality of hydro-turbine-generator alarm management R. Nowicki M.C. Snyder Asset Management and Condition Monitoring / Expert Baker Hughes, a GE Company Myśliborska 62 1631 Bently Parkway South 60-432 Poznań Minden, Nevada, POLAND USA 89423 Introduction Problems with industrial alarm systems are well documented. The implications of poor alarms and the resulting inadequate operator responses are factors in many incidents in a wide variety of industries, including hydro-power generation. Therefore, Alarm Management has become an ever-increasing topic of discussion in the power and process industries. It has also been recognized that slow speed rotating machinery can require a condition management system with different features than those typically needed for high speed machinery. This paper describes several unique features of condition management systems that improve the quality of alarm management. These functionalities are: (i) multimode, (ii) trip multiply and (iii) state-based. Examples of these are presented, and their purpose and importance for asset and alarm management are explained. Abbreviations BEP - Best Efficiency Point CMS - Condition Monitoring Systems CM&PS - condition monitoring (and protection) system C&I - Control & Instrumentation ESD - Emergency shut-down device HPP - hydro power plant HTG - hydro-turbine-generator MI - Mechanical Integrity NVM - Normal Vibration Magnitude RPM - Revolution Per Minute RVM - Resonance Vibration Magnitude TM - Trip Multiply Notations ALERTNORM - “HIGH value” of a condition measurement setup in the CM&PS ALERTTM - “HIGH value” of a TM condition measurement setup in the CM&PS DANGERNORM - “HIGH-HIGH value” of a condition measurement setup in the CM&PS DANGERTM - “HIGH-HIGH value” of a TM condition measurement setup in the CM&PS -/+M% - Margins of nominal head -/+N% - Margins of nominal power RPMHIGH - Rotor speed well above of resonance speed RPMLOW - Rotor speed well below of resonance speed RPMNOM - Nominal rotor speed RPMRES - A rotor resonance speed TMMAX - Maximal value of TM of a CM&PS TMRES - Resolution of TM configuration / TM Available Accuracy of a CM&PS  - Cavitation number