Experience shows that pump MTBFs (mean time between failures) are directly related to mechanical seal reliability. It is well known that pump mechanical seal MTBF is the lowest of all machinery components.
Below are excerpts from the paper ‘Performance Improvement of Gas Turbine With Compressed Air Injection For Low Density Operational Conditions’ (by S. Arias Quintero, S. Auerbach, R. Kraft of PowerPHASE LLC) presented at the 2014 ASME Turbo Expo.
The entrance of oil through the oil seals into refrigeration systems will reduce the capacity of the system and impact on process unit revenue. To ensure that seal oil does not enter the process loop and foul the chillers, it is essential that lube/seal oil reservoir level on all refrigeration applications are monitored.
Careful monitoring of oil reservoir level will signal oil seal system problems and lead to their resolution before the refrigeration system, plant capacity and revenue are affected.
Sweet hydrocarbon or inert gas service
It seems a foregone conclusion that we’re going to go with the “natural gas is a bridge fuel” logic, because it fits the current political narrative. I’d like to put this into perspective.
This approach puts us on the “Coal-to-gas shift” initiative, underlined in red, below:
Following an interesting corporate battle involving business interests, energy security and national interest, GE was finally able to persuade the French government to incline in its favor. But the government has made some more demands from GE, and the final shape of things is yet to come.
Kawasaki Heavy Industries, Ltd. (KHI) recently announced the completion of its new 30MW gas turbine Kawasaki L30A, said to be the flagship model of its fleet. Claimed to have one of the highest efficiency ratings in the world in its class, it is expected to be launched in June 2012.
MAN Diesel & Turbo has broken the century mark with its latest order for integrally geared centrifugal compressor, for air separation. It is a key component in air separation trains and the company’s AIRTRAIN and AIRMAX trains cover a broad spectrum.
The new EPA guidelines for power plants has probably come at the right time for big companies such as GE and Siemens that seem to have bet on an immediate surge in gas turbine orders through their strong efforts to buy other gas turbine businesses and round out their power range portfolios.
Usually contractors and users include performance test in the base scope of the purchased compressor. However during bid conditioning, the Engineers tend to give less attention to the evaluated bidders’ shop test capabilities.
Alstom has until June 23 to decide on the GE offer for takeover. But it seems that either the French government or the EU anti-trust commission would be able to beat back the GE push despite the Alstom board being favourable to the GE offer.
Alstom has said that it would open its books to Siemens just as much as it did to GE, not more. But the Siemens offer would likely exclude the train division that would function as an independent French entity.
Interference Diagrams” also termed by some as “Safe Diagrams" are utilized for fully-coupled rotating blades. In Reference No. 1 resonance where harmonic of speed is equal to nodal diameters is reviewed, along with when difference in numbers of blades and vanes equal to number of diameters.
The first item to be realized is that radial or axial rubbing is not a machinery malfunction. A rub is secondary indicator that occurs when there is contact between rotating and non-rotating components. Some of the primary causes that can lead to a rub are:
·tight or incorrect clearance
·rotor bowing, etc.
Shanghai Electric Group has agreed to pay 400 million euros ($555 million) for 40 percent of Ansaldo Energia that makes utility-size gas and steam turbines. Ansaldo – once a licensee of Siemens V series – supplies gas turbines including for low calorific value gases.
Last week, we had indicated that the turbomachinery industry will likely major shifts with GE and Siemens planning to take over Alstom and Siemens eyeing Rolls-Royce's energy turbine and compressor business.
After determining how long you want the equipment to last and identifying the process and fluid properties, it is time to select the pump. Factors for minimum life cycle costs include installation, maintenance, energy, safety and environmental and possibly other considerations.
In the next 10 days, the turbomachinery industry may see some of the biggest corporate swaps. With GE and Siemens competing to buy all of Alstom, Rolls-Royce has announced that it is mulling a deal with Siemens to sell off its aeroderivative turbine and compressor business.
Electrostatic Spark Discharge (ESD) is a phenomenon that occurs when oil generates sufficient static electricity to form sparks. This form of oil degradation has been studied extensively in many systems, including large frame gas turbines. Although most power plants are now aware of this form of turbine oil degradation, there is insufficient clarity on how critical of an issue ESD is.