Search found 150 matches

by tuan
13 Sep 2026, 15:15
Forum: Maintenance Engineers
Topic: Pump seal leakages
Replies: 0
Views: 2598

Pump seal leakages

There has been a trend indicating we have increased pump seal leaks over the year.
We as Operations with support of other sections are evaluating what could be the causes.
What are the indicators which we should be looking into while properly evaluating them?
by tuan
13 Sep 2026, 15:13
Forum: HSE Engineers
Topic: API 754: Summary of Changes
Replies: 2
Views: 4628

Re: API 754: Summary of Changes

While the assessment criteria and financial thresholds have been fine-tuned, the fundamental architecture of the standard remains intact.
The industry standard four-tier pyramid continues to be the foundation of API RP 754:
Tier 1 (Lagging): Major losses of primary containment with the greatest ...
by tuan
27 Aug 2026, 07:47
Forum: Process & Control Engineers
Topic: Process Safety and Process Control Engineers
Replies: 3
Views: 3725

Re: Process Safety and Process Control Engineers

There is significant overlap, especially for engineers with strong process/operations experience, but Process Safety Engineering and Process Control Engineering are fundamentally different disciplines. Think in this way, that Process Control keeps the process within its normal operating envelope ...
by tuan
22 Aug 2026, 20:02
Forum: Maintenance Engineers
Topic: Rubber Expansion Joins with & without Control Units
Replies: 4
Views: 2890

Rubber Expansion Joins with & without Control Units

What are the basic reasons of having rubber expansion joints within the piping with or without control units?
Just need to know that if at one place they are without any control units, what are the reasons?
by tuan
21 Aug 2026, 19:47
Forum: Chemical Engineers
Topic: Antisurge Valve Sizing
Replies: 0
Views: 5405

Antisurge Valve Sizing

A very good reference.
AntiSurge Valve Sizing.pdf
by tuan
18 Aug 2026, 14:48
Forum: Operation Engineers
Topic: Fractionation efficiency and operating pressure
Replies: 3
Views: 2407

Re: Fractionation efficiency and operating pressure

The statement "reduce pressure to improve fractionation efficiency" is not universally true.
What improves is primarily the thermodynamic ease of separation, because relative volatility often increases. But actual column efficiency also depends on tray/packing hydraulics, mass-transfer efficiency ...
by tuan
18 Aug 2026, 14:46
Forum: Operation Engineers
Topic: Hydrocarbon leak detection at cooling water outlets
Replies: 2
Views: 2188

Re: Hydrocarbon leak detection at cooling water outlets

We have already implemented automated cooling water return sample points / VOC analyzers (e.g., EPA Method 311 / El Paso Method) to have an early detection.
And that is the actual process safeguard that should be in place.
by tuan
08 Aug 2026, 09:58
Forum: HSE Engineers
Topic: HSE Actions Implementation
Replies: 4
Views: 3472

Re: HSE Actions Implementation

Dashboards have been in the reports now a days to support implementation of agreed actions.
Companies are investing to have visibility of systems and the actions coming out of them.
Risk ranking these actions should be the basic thing to do. 800 actions in progress would not provide any idea where ...
by tuan
08 Aug 2026, 09:55
Forum: Process & Control Engineers
Topic: Reactor runaway temperature excursion
Replies: 3
Views: 3115

Re: Reactor runaway temperature excursion

In a reactor runaway temperature excursion, protection is based on the Layers of Protection Analysis concept.
Ideally, multiple independent layers should respond in sequence before the situation escalates into vessel overpressure, loss of containment, or explosion.
I have attached a typical ...