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Command State blocks have "masks" for both the Preset and Enable functions (they are usually four-character values). To make the Preset active or enable the feature, the Masks have to be set properly. It's not enough to just change the values of the Preset or Enable logic; the block has to be...

Well, you might be able to change from Droop to Isochronous during loaded operation in parallel with a grid, but you'll likely only do it once. The unit will most probably go unstable and then trip. And, no; Isochronous mode does not allow load setpoints. The whole purpose of Isochronous mode...

Is it only for redundancy? If you've been operating successfully with single transmitters on a Mark IV TMR system, you can likely continue to do so with a Mark VIe TMR system, presuming you have conventional, diffusion flame combustors. However, some of the older P2 and CPD transmitters used...

suhail, I believe the two zeroes in the middles of 9001 are kind of like placeholders. The 9 signifies a Frame 9 (could be a 9E or a 9Fx, the E signifies an E-class unit). The 1 signifies a single-shaft unit (as opposed to a two-shaft machine). MS9001E is a generic way of referring to a...

We really can't address your doubts because we don't know what doubts you have. You have asked a couple of questions which have been covered many times before on control.com. Use the 'Search' feature in the right corner of the Menu bar at the top of every control.com page to search for 'droop...

Have you implemented the PROM upgrade procedure recommended in TIL-1480? Have you checked for the presence of corrosion on the ribbon cables/connectors? A light film of conductive grease (some is usually supplied in the boxes with spare cards purchased from GE) applied to the plastic female...

The Fuel Splitter sequencing in the Speedtronic has a ramp rate for reducing the fuel being transferred from/fuel being transferred to (usually 30 seconds from the start of the transfer after some period of "pre-fill" where the control valve of the fuel being transferred to is just slightly...

13 barg hydraulic system pressure seems a little on the high side, but not excessive if I recall correctly. Is the pressure set using VPR-3 of the hydraulic pump, or VR-21 on the hydraulic manifold? It should be set using VPR-3, NOT VR-21. Is there a hydraulic accumulator in the hydraulic...

The first question to be answered (by suhail) is: Have you ever had successful fuel transfers in the past, specifically when going from liquid to gas fuels as in this case? The fuel splitter software used in most Mark V CSPs reduces the fuel reference for the fuel being transferred from while...

It would seem this problem just recently started; was it after some maintenance outage? Are there any Diagnostic Alarms annunciated during this hunting? What Diagnostic Alarms are present before and after the hunting? What Process Alarms are present before and after the hunting? You...

I have made a serious ass-umption here: That the smoking is occurring during the fired shutdown from FSNL while the unit is operating on liquid fuel. If the unit is operating on gas fuel, then something is seriously amiss as white smoke rarely comes from a gas turbine exhaust while operating...

We understand the smoking is coming when the turbine is being shutdown (STOP active). If you can't enter the Accessory Compartment to check the fuel pressures without tripping the turbine you're going to have some difficulty troubleshooting the problem. You didn't answer the question of...

Preselected Load - A mode in which the operator can set a specific load setpoint (MW) and the Speedtronic will adjust the fuel to maintain the setpoint. Sometimes there are upper- and or lower limits on the value of the setpoint, and sometimes there is no operator-adjustable setpoint, just a...

Thanks, Bob! Is this purchase price, or installed cost? Or anticipated operating cost over some anticipated life expectancy?

If "cold" gas fuel is injected into the combustor there is some amount of heat lost in the combustor due to the chilling effect of the temperature of the gas. This somewhat reduces the efficiency of the turbine because it takes a little more fuel to raise the temperature of the combustion gases...

The numbers you cited are likely for the cost of purchasing the equipment to produce electrical power (that's a guess on my part, actually, since you haven't told us where you obtained the values). It may or may not include the cost of engineering (designing) the plant, acquiring the land...

Sent, When did this problem start? What have you done to try to resolve the problem? Have you used the manual selector valve at the Liquid Fuel Flow divider to monitor the fuel pressures of each combustor/nozzle during operation and during shutdown? Your shutdown fuel "curve" may...

If you are so keen to find the "culprit" and you have already examined the pump(s) and found them to be working properly (does that include the pressure compensator mechanism?), and you also replaced the relief valve(s) and the air-bleed check valve(s), then it would seem logical to continue...

1. If the cable is armoured, then the industry consensus is the cable should be glanded at both ends. (Personally, I've never understood this glanding business, but no one asked me. A gland at one end of a conductor (the armour) that grounds the armour and a gland at the other end that grounds...

The cost of any power-generating equipment (prime mover <b>and</b> generator) is usually expressed in terms of the output power. And a GE Frame 9E is a prime mover which would have to drive a generator to produce electrical power. So, for an electrical power-producing turbine and generator...