Vibration monitoring of Gas Turbine in oil industry Essay

Vibration monitoring of Gas Turbine in oil industry - Essay Example Mostly it is used in turbo machinery when in support of fluid film bearings. ii. The Velocity-pickup detectors: It is characterized with a flat response to amplitude which is given as a function of frequency. As a result the alarm setting will remains same as before despite different speeds of the turbine. Their role in the turbines diagnosis is however limited. This pickup detector tends to be very directional providing different result values when subjected to the same force but placed facing in different directions. iii. Accelerometers: This is usually in many cases mounted on the machine’s casing. Their main work is to pick up vibrations problems from the spectrum transmitted between the shaft and the casing. They are used in identification of high frequency response problems which can arise due to, dry fictional whirl, wearing of gear teeth, blade flutter and surge. The industrial gas turbines in oil industries are built and intended for industrial applications as exhibited in their design features. Gas turbine in oil industry utilizes the fluid-film in bearings in both their and axial and radial shaft support. They use seal oil auxiliary systems and conventional lube oil, and also they are used in heavier construction, due to their heavy weight driven components. (Kamboukos et al.2005). Some Gas Turbine Condition Monitoring and Protection System that can be used are: i. Radial Bearings: When two proximity probes are used then they should be placed in a configuration that of X-Y in each of the bearing and observe directly their relative motion from the bearing and the shaft. This has been recommended to be used like a shutdown parameter. ii. Thrust Bearings: Only two proximity probes are used, observation of the axial position in the shaft being at within thrust bearing area of clearance. It is also has been recommended to be used as shutdown parameter. (Loboda et al. 2006). iii. Casing Vibration: The

Occupational Health and Safety Management (Part II only - Explaining Assignment

Occupational Health and Safety Management (Part II only - Explaining the accident) - Assignment Example The cleaner was working hurriedly due to the heavy workload and pressure that some water would splash on the floor. The waitress, while passing near Wong, slipped when she stepped on the slippery floor. The movements of the waitress caught the attention of Wong who abruptly glanced at her. Such sudden glance caused Wong to injure his fingers. The waitress is newly hired (reported for work on December 22nd) and was wearing heeled shoes when she slipped on the 24th of December. Just recently, the same waitress slipped in the kitchen and as she grabbed the working desk, a knife fell on the floor. The knife had been blunted, which is the same knife used by Wong. The kitchen has ventilation and sufficient lighting. The chef, assistant chef and the cleaner wore aprons and non-slippery shoes. The kitchen does not have slippery floor signage. Kitchen equipment and tools that become rusted or unusable should be properly disposed through a Disposal Form. From December 15 to 24, the cafe person nel were required to work for 11 hours a day. Therefore, at the time of the occurrence of the accident, all the staff were already fatigued and stressed due to extreme work demand. The degree of injury can be considered as a minor injury since the doctor advised Wong to take three days leave from work. Factors that Led to the Accident: Investigated and Not Identified by Manager A trail of occurrences had led to the happening of the accident. All the cafe personnel were fatigued and stressed due to overwork and pressure. The waitress was not wearing non-slippery shoes in the kitchen. The cleaner was carelessly washing the dishes that causes water splashes on the floor. She might also be negligently walking across the floor without taking notice of her surroundings. On the part of Wong, he naturally reacted to see what was happening or whether the waitress would fall toward him. While the waitress was carelessly walking across the floor, the cleaner was carelessly and negligently wash ing dishes; thus water that spilled on the floor made it slippery. The kitchen, although well lighted and ventilated, is not constructed properly. The sink where the dishes are washed should not be placed near the door but somewhere in the inner part of the kitchen, or the corner opposite the kitchen door. The current location of the sink really invites accidents and would be an obstruction to the movement of personnel in the kitchen. The main entrance to the kitchen should be free from any obstruction, either to the left or to the right after entering the kitchen. Although not mentioned in the incident report, the sink may be located on the left or the right side of the door. The door must be able to swing freely forward or backward. No signage was posted at conspicuous places inside the kitchen such as â€Å"Slippery Floor†, â€Å"Unauthorized Persons not Allowed†, â€Å"Always Wear Proper Kitchen Attire†, and several others. There is also inadequacy in the pr ocedure inside the kitchen. The waitress should not be allowed to approach the working area of the chef and assistant chef to get the food. The food ready to be served must be placed by the assistant chef at a place near the entrance of the door, but far enough so as not to cause an obstruction. In this manner, the waitress would not be disrupting the attention of the assistant chef