Packages · Utility
To establish the project design basis for “Instrument Air Packages”, confirm “Instrument-air demand and quality” and its inputs: Provide normal/peak demand, delivery pressure, required instrument-air quality/dryness, ambient conditions and storage/redundancy needs. Final values, supply limits and acceptance criteria are recorded in approved engineering documents; no generic capacity or catalogue guarantee is assumed.
From project definition to delivery
Engineering of Instrument Air Packages concentrates on air demand profile, pressure and dew point, compressor turndown, dryer performance, receiver autonomy, filtration, redundancy, noise and oil carry-over. The selected configuration is verified against normal, minimum, start-up, shutdown and credible upset cases, then checked for operability, maintainability, energy use, process safety and site interfaces before the design is frozen.
The design basis for Instrument Air Packages is defined from service data, design conditions, and battery limits. For this equipment, Instrument-air demand and quality and Service and quality conditions must be completed in the datasheet and design documents; performance values and guarantees are set only after the project basis is approved.
Materials, corrosion allowance, sour-service requirements, piping classes, nozzle design, insulation, coating, supports and maintenance access are coordinated with the actual process conditions and project code hierarchy.
Control philosophy, alarms and trips, cause-and-effect logic, interlocks, start-up and shutdown sequences, safe depressurization and operator access are developed consistently from the P&IDs through functional testing.
Battery limits, tie-in points, structural loads, cabling, instrumentation, drains, vents, access routes, lifting envelopes and shipping constraints are controlled through coordinated models and interface drawings.
From project definition to delivery
Proposal quality depends on complete input data and an explicit acceptance basis. The following lists provide a practical starting point and are completed during technical clarification.
Technical Datasheet
A sourced market example is shown below, not a code-mandated envelope, Delham rating, or project guarantee. Confirm the applicable model and project conditions before using it.
| Parameter | Published value | Basis / secondary data | Application limit |
|---|---|---|---|
| Oil-free screw-compressor reference | FAD 1–150 m³/min | Published compressor-family pressure range: 3.5–13 bar(g). | Compressor component envelope only; dryer/filter losses, air quality and receiver reserve must be sized separately. |
Delham Engineering
Send the available process data, battery limits and expected document list for a technical proposal. The engineering team will identify missing information through a structured clarification register.
