An effective way to improve a distillation tower fractionation efficiency is to reduce the tower’s operating pressure.
But what that reduction in operating pressure would cause? What are the other factors to be considered?
Search found 31 matches
- 16 Aug 2026, 15:43
- Forum: Operation Engineers
- Topic: Fractionation efficiency and operating pressure
- Replies: 3
- Views: 2359
- 02 Aug 2026, 07:22
- Forum: Electrical & Instrument Engineers
- Topic: PST of ESD
- Replies: 4
- Views: 2704
Re: PST of ESD
For Emergency Shutdown (ESD) valves, the Partial Stroke Test (PST) interval is not fixed by any international standard. The testing frequency is determined by the required SIL, reliability calculations, failure rates, manufacturer's recommendations, and the site's proof test philosophy.
Typical ...
Typical ...
- 27 Jul 2026, 10:55
- Forum: Electrical & Instrument Engineers
- Topic: Detecting drifting transmitters
- Replies: 7
- Views: 6278
Re: Detecting drifting transmitters
These are some of the few ones:
1. AMS Device Manager
Plants with Emerson instrumentation
Device diagnostics, calibration records, predictive alerts, valve diagnostics
2. FieldMate
Yokogawa-based plants
Device configuration, diagnostics, offline/online maintenance
3. FieldCare
Endress+Hauser ...
1. AMS Device Manager
Plants with Emerson instrumentation
Device diagnostics, calibration records, predictive alerts, valve diagnostics
2. FieldMate
Yokogawa-based plants
Device configuration, diagnostics, offline/online maintenance
3. FieldCare
Endress+Hauser ...
- 27 Jul 2026, 10:48
- Forum: Maintenance Engineers
- Topic: Inorganic Zinc Silicate
- Replies: 2
- Views: 2106
Inorganic Zinc Silicate
Why inorganic zinc silicate is preferred for coating of newly constructed assets whereas zinc rich primer is recommended for in-service ones?
- 23 Jul 2026, 18:17
- Forum: Process & Control Engineers
- Topic: Fireproofing of PSVs
- Replies: 3
- Views: 2702
Re: Fireproofing of PSVs
Some facilities require equipment to remain functional for 30 minutes, 60 minutes, 120 minutes, depending on evacuation philosophy.
If a PSV is needed to continue relieving pressure during prolonged fire exposure, fireproofing may help preserve its mechanical integrity.
If a PSV is needed to continue relieving pressure during prolonged fire exposure, fireproofing may help preserve its mechanical integrity.
- 23 Jul 2026, 18:13
- Forum: Open Forum
- Topic: Web based applications
- Replies: 3
- Views: 4949
Re: Web based applications
Windows installation packages are pretty much needed as many of the popular engineering applications still get installed locally.
I would say a word of caution when using cloud based applications.
Data security is of major concern and with AI now a days, breaches are even much common.
I would say a word of caution when using cloud based applications.
Data security is of major concern and with AI now a days, breaches are even much common.
- 12 Jul 2026, 07:25
- Forum: Electrical & Instrument Engineers
- Topic: LOPA or QRA
- Replies: 3
- Views: 3274
Re: LOPA or QRA
I would first verify whether the scenario fits LOPA assumptions—a single initiating event with independent protection layers and independent failures. If the multiple failures involve dependencies, common-cause failures, cascading events, or complex consequence interactions, I would recommend a ...
- 12 Jul 2026, 07:24
- Forum: Electrical & Instrument Engineers
- Topic: Voting Arrangement
- Replies: 2
- Views: 2579
Re: Voting Arrangement
1oo2 is usually preferred when:
The hazardous event develops very quickly.
Missing a real demand is considered less acceptable than an occasional nuisance trip.
The process can be restarted easily.
Capital cost is a significant constraint.
SIL calculations show it adequately meets the required risk ...
The hazardous event develops very quickly.
Missing a real demand is considered less acceptable than an occasional nuisance trip.
The process can be restarted easily.
Capital cost is a significant constraint.
SIL calculations show it adequately meets the required risk ...
- 08 Jul 2026, 15:09
- Forum: Electrical & Instrument Engineers
- Topic: Detecting drifting transmitters
- Replies: 7
- Views: 6278
Re: Detecting drifting transmitters
Asset management software helps in picking up the following parameters:
Calibration history
Device diagnostics
Failure history
Drift rate
Sensor health
Environmental conditions
They can predict like, "This pressure transmitter will exceed calibration tolerance in 4 months."
This is predictive ...
Calibration history
Device diagnostics
Failure history
Drift rate
Sensor health
Environmental conditions
They can predict like, "This pressure transmitter will exceed calibration tolerance in 4 months."
This is predictive ...
- 20 Jun 2026, 10:13
- Forum: Electrical & Instrument Engineers
- Topic: Servicing of Control Valves
- Replies: 4
- Views: 6278
Re: Servicing of Control Valves
Practically, these are the historical maintenance records as we pull out before each opportunity.
Data leads such as repeated packing failures, frequent seat leakage, recurring actuator problems, multiple work orders over recent years, repeat offenders usually deserve priority attention.
Pretty ...
Data leads such as repeated packing failures, frequent seat leakage, recurring actuator problems, multiple work orders over recent years, repeat offenders usually deserve priority attention.
Pretty ...