What exactly safe operating limits reporting be based upon as per API 754? Design limit excursion itself, right?
And how that should be reviewed? Every time the limit exceeds, without any delays?

API 570 outlines three primary inspection and testing methodologies to verify the mechanical and operational condition of CCVs:
External Visual Inspections:
Conducted as part of routine external piping circuit inspections. Evaluates the valve body, external hardware, and general condition without ...

Yes. An inability to maintain corrosion-inhibitor dosing at the rate specified in the Safe Operating Limits (SOL) register should generally be treated as a deviation from an established operating limit/control, but the controls should depend on whether the dosing rate is a true safety-critical limit ...

Yes, but it is a combination like you can check the offerings from AVEVA & Bentley.

Lower pressure leads to lower boiling temperature.
For example, a component that boils at 180°C at one pressure might boil considerably lower at reduced pressure.
That can be very beneficial when:
Components are thermally sensitive
Polymerization/decomposition is possible
Heavy hydrocarbons are ...

Bubble-cap trays are often better when operating flexibility and low-load performance are more important than pressure drop, capacity, cost and mechanical simplicity.
A bubble-cap tray maintains liquid on the tray and forces vapor through the risers/caps. Unlike a sieve tray, there are no simple ...

If you are dealing with a continuous feed where the composition (and thus the MW) is fluctuating, operators and control systems must closely monitor several variables:
Anti-Surge Control System Tuning: Older or simpler anti-surge controllers rely on a fixed surge line programmed for a specific gas ...

Spade control should not depend on the PSSR team discovering, line by line, that a spade has been left in the wrong position. That is a weak control philosophy.
The better approach is to treat temporary spading/blinding as a controlled configuration of the process plant, with independent controls at ...

Maintenance engineers:
What sort of Belzona repair can be applied on piping pinhole having cooling water service?
What are the major considerations?
Applied in all cases? What are the limitations?

A reactor runaway is first controlled by the Basic Process Control System through cooling and feed control. If temperature continues to rise, alarms prompt operator intervention. Should the operator fail or the reaction accelerate beyond control, the Safety Instrumented System initiates an automatic ...