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How do you carry out functional speed, vibrations and lube oil level devices testing for turbines and other machinery at your plant? Specifically how do you justify shutting down production to test devices? How do you justify testing the speed (when everything can go wrong during the test)?

API 616 Section 5.4.4.3 The fuel control system shall include shutoff valve, separate from the fuel control valve that stops all fuel flow to the turbine on any shutdown condition and can not open until all permissive firing conditions are satisfied. The valve shall have a means for local and...

ANSI B133.4 – 2.2.1 Steady State Speed Regulation or droop shall be capable of adjustment within range of 2 to 6% at rated speed. Can someone explain what this mean?

Thanks to all for your input!

Read API 616 instead of API 614 in the previous post

Thanks for your input Albetio! The number 110% seems to be very frequently evoked as overspeed shutdown setpoint! I have a litle bit of confusion between the different terms used in the standard; what is the relation between the MCOS (maximum continuous speed) and the Rated Speed? Stgrme, in...

Thanks for your reply stgrme; What reference are you susing for the speed? Are those refering to the percentage of rated speed?

API 616 5.4.4.6 states: An overspeed trip protection shall operate at 105% of maximum continuous speed. Multiple shaft turbines shall have individual overspeed trip protection for each shaft. API 616 3.22: maximum continuous speed: The speed (revolutions per minute) at least equal to 105% of the...

Hi, I am auditing a gas turbine unit compliance to a standard (API 616), and item 5.4.3.4 states :The governor for mechanical drive applications shall limit speed to 105% of rated speed. I found that there is a trip setpoint a 110% of rated speed and no other details on the governor control...