Maintenance & Reliability
Case history: Troubleshooting a leaking valve in a hydrogen unit
A Middle East refinery installed a hydrogen plant that was designed to produce 20,000 Nm3/hr of pure hydrogen (H2) to support a diesel hydrotreater. The unit was commissioned in 2006. This H2 plant wa..
Optimize plant reliability with operator-based maintenance programs
This case study demonstrates the potential maintenance-labor cost savings that can be obtained through the greater utilization of operations staff; such savings can justify OPPM program investment.
HP Automation Strategies: Energy management lessons from Europe
ARC Advisory Group research indicates that, by applying appropriate energy management measures, energy-intensive companies can reduce their energy consumption by 30% to 40% over a 15-year timespan. Th..
HP Reliability: Advances in gasket designs making progress
Long service life and maintenance cost avoidance for equipment are of great interest to reliability professionals in the hydrocarbon processing industry. These goals are supported by a renowned gasket..
HP Engineering Case Histories: Case 80: Sudden temperature change in a centrifugal compressor
A process upset occurred that caused the gas temperature of a centrifugal compressor to increase from the design condition of Tstart = 300°F to Tinf = 600°F in t = 0.25 hours. Some engineers..
HP Reliability: Things to know and do before starting new initiatives
HP editors frequently attend technical conferences to keep informed on the many factors impacting the hydrocarbon processing industry (HPI). The focus of these conferences often differs. However, one ..
What is the ‘refinery of the future’?
For years, technology experts and engineers have discussed the elements and operations that will define the refinery of the future. The refining industry has made great progress from the early days. H..
Improve performance of exchangers in quench-water services
Dual-enhanced (DE) tubes are widely used in shell-and-tube heat exchangers (HEXs) in a range of industries. They have become a standard in multiple clean services for the hydrocarbon processing indust..
A chemist’s perspective on organic fouling in ethylene operations
Since organic fouling cannot be completely eliminated, ethylene producers must use operational, chemical and mechanical methods to minimize heat transfer losses and equipment downtime.
HP Reliability: Normalization of deviance can kill
On January 28, 1986, the space shuttle Challenger (mission STS-51-L) broke apart just 73 seconds after launch. The seven-member crew of the shuttle lived until 3 minutes and 58 seconds after launch, w..
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