This author has yet to write their bio.Meanwhile lets just say that we are proud Mike.Lake contributed a whooping 69 entries.
Contrary to popular opinion, all workers can prevent themselves from getting hurt. The easy way to avoid pain is to observe how others have taken risks and been injured, rather than learning the hard way–from your own injury. That’s common sense! By avoiding unsafe acts and practicing common sense, your work will go smoother, with […]
General. The typical generator stator winding consists of three independent circuits or phases. These circuits must be as symmetrical as possible with one another to achieve maximum generator efficiency. This symmetry includes the cross section of each conductor as well as the length or distance from main lead to neutral lead. The Copper Resistance (or […]
Falls are one of the leading causes of unintentional injuries in the United States, accounting for nearly 8.6 million visits to the emergency room. Adults 55 and older are more prone to being victims of falls, and the resulting injuries can diminish the ability to lead active, independent lives. The number of fall deaths among […]
The final Turbine Generator Tip in this series discusses two common steam turbine casing problems – Distortion and Erosion. The repair methods employed – grinding, mechanical repair, welding and stress relief – have their own set of considerations which were covered in previous portions of the series. Casing Distortion Casing Distortion becomes a strong likelihood […]
Welding is a common method to repair turbine casing cracks, but it must be applied with consideration. Most turbine casing alloys can be welded using either of two distinct procedures: stress relieved and non-stress relieved. The procedure selected is often dictated by time and cost restraints. Non-stress relieved welds have the advantage of lower cost […]
Statistics indicate that knives cause more disabling injuries than any other hand tool. People in all occupations are injured by knives – a stock boy in a supermarket produce department or a mechanic opening a box or cutting rubber. We are all exposed to knife injuries only because a knife is a very handy and […]
According to OSHA, forklift overturns are the leading cause of fatalities related to the use of forklifts and result in 25% of all forklift deaths. Other incidents that are associated with using forklifts include falling from a forklift, loads falling on workers, not using a seat-belt and being ejected or not following the proper procedures […]
This three part Turbine Generator Tip discusses the most common steam turbine casing problems: cracking, distortion and erosion. Most units can be repaired by grinding, welding or by pre-stressed mechanical methods. Finite element calculations show that in many cases, repairs can overcome some of the original design weaknesses and extend useful life by up to […]
Just when you think you have all the bases covered, the “impossible” happens. During a lift on one of our recent outages, the idler pulley and mounting bracket for the drive on the overhead crane fell approximately 25 feet. Fortunately no one was injured. We have discussed the need for pre-outage crane inspections in previous […]
Which is better: AC or DC Testing? Will these tests hurt my generator? Here are the facts: DC high potential test equipment is relatively small and easy to transport. AC equipment is comparatively difficult to transport (large and heavy). DC testing stresses the dielectric in a different manner than AC. DC tends to stress the […]
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