thePetroStreet

What critical matters and things do i need to bother during pre commissiong and commissioning of a esterification plant. I am a process engineer. so, for mechanical and piping work, i am not sure. I have to liaise with the commissioner to sort out all the problem. Please advise.

You are talking about a vast topic. You may find your interest in API-700 (Checklist for Plant Completion).

In general, as far as Owner Process Engineering review scope is concerned, you will be responsible for following (pre-com);

• Verification of as-built P&ID
• Vessel internal inspection before final box-up
• Control loop verifications (soft loop testing)
• Reduction of catalyst (if present and required) under OEM presence
• Verification of flow meters (orientation, location and metering factors etc)

And for commissioning;

• Pre-Startup-Safety-Review cycle (PSSR)
• Performance test runs of all equipments (machines, distillation columns, furnace, mixers, exchangers, catalyst, gas turbines etc)
• Verification of overall plant performance including energy index and production capability
• Plant smooth operations at all guaranteed production loads, with respect to any design limits breach.
• Development of new KPIs (Key Performance Indicators) in addition to OEM provided KPIs, to monitor plant performance in more precise and accurate way.

For a Commissioning Process Engineer (EPC) then your responsibilities will be entirely different. That mainly includes the compliance of contractual numbers, by any means necessary.