Equipment Sizing and Specification
We produce process datasheets and specifications for your static and rotating equipment
Equipment Sizing
and Specification
Equipment sizing and specification turns your process simulation outputs into procurement ready engineering documents. When equipment is under specified it arrives undersized or over designed, and poorly written datasheets generate expensive vendor queries and commissioning rework. Our team produces process datasheets and procurement specifications to API, ASME, and TEMA standards for static equipment, heat exchangers, pumps, compressors, and packaged units, complete to the point where you can issue the invitation to bid.

Equipment Sizing and Specification workflow
Extract equipment duty from simulation output, define design conditions, flow compositions, and pressure/temperature envelope.
Apply API, ASME, and TEMA sizing methods, select equipment type, configuration, and capacity margins.
Coordinate nozzle loads, support type, material grade, and corrosion allowance with mechanical discipline.
Prepare process datasheets to API/ASME/TEMA data sheet format, ready for procurement and vendor submission.
Compile ITB technical specification, vendor pre qualification criteria, and commercial evaluation matrix.
Review vendor engineering documents, attend factory acceptance tests, and issue punch list sign off.

Every deliverable from basis to handover
Complete Equipment Sizing and Specification scope covering every calculation, drawing, specification, and construction support activity.
Outcomes of Equipment Sizing and Specification
- Specifies equipment with adequate design margins
- Aligns the mechanical design with the process duty
- Strengthens material selection for the service
- Supports relief and overpressure design
- Follows the API, ASME, and TEMA codes
- Documents material and design certification
- Supports regulatory inspection
- Produces documentation that withstands client and AHJ scrutiny
- Reduces equipment failure frequency
- Supports realistic inspection and maintenance programmes
- Improves the quality of your vendor selection
- Strengthens your commissioning capability
- Avoids the cost of over specified equipment
- Reduces lifecycle maintenance cost
- Improves vendor pricing through clear specification
- Supports capex optimisation
Codes & standards we work to
Triggers that signal the need
Where Equipment Sizing and Specification applies
Wellheads, separators, gas compression, FPSO topsides, produced water systems.
Distillation columns, reactors, heat exchangers, storage spheres, LPG handling.
Cryogenic exchangers, liquefaction trains, BOG compressors, storage and sendout.
Reactive systems, batch reactors, solvent handling, runaway reaction scenarios.
Boilers, HRSGs, steam headers, hydrogen systems, ammonia SCR units.
Sterile vessels, CIP/SIP, pressure fermenters, solvent recovery, spray dryers.
Tangible deliverables
- Process datasheets for each item of equipment
- Mechanical design coordination notes
- A material selection report
- Procurement specifications
- An invitation to bid technical package
- A vendor evaluation matrix
Ready to start your project?
Speak with our team to scope an engagement tailored to your facility, regulatory context, and lifecycle stage.