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Operations & Maintenance

Revamps and Retrofits: A Path to Evergreen Facilities

An intelligent approach to developing the scope of retrofit projects can allow facilities to remain competitive in the marketplace and meet regulatory requirements Timely and well executed retrofit projects are critical for most facilities in the chemical process industries (CPI)…

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Unlocking Hydraulic Limits in a Revamp

Follow the practical tips discussed here to accelerate hydraulic revamp projects and increase the success rate Conducting a thorough hydraulic check is a crucial part of a successful plant revamp. Depending on the remaining margin of the hydraulic system, a…

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Effective Contracting for a Pilot Plant

Contracting a pilot plant is a viable approach for any organization. However, it can be fraught with potential issues, which need to be understood and addressed in advance Reduced in-house resources have limited the options many organizations have for designing…

Bolt-Load Considerations Associated with ‘Hot Bolting’

In some situations, it might be necessary to remove or replace a bolt during operation. This article shows how to determine the proper bolt load to prevent leaks Bolted flange joints (Figure 1) are part of pressure vessel and piping…

Proof-Testing Level-Measurement Devices in Storage-Tank Safety Systems

Storage tanks containing hazardous materials require safety instrumented systems (SIS) to prevent overfills. Digital technology in the latest level-measurement devices used in SIS enables remote proof-testing, which provides significant advantages At industrial facilities with tanks containing hazardous, flammable or explosive…

Field Calibration of DP Flowmeters: Best Practices

Improved understanding of differential pressure (DP) flowmeter operation, along with best calibration practices, reduces maintenance errors Utilizing an orifice plate installed in a pipe and accurately measuring the differential pressure (DP) to calculate flow is one of most common methods…