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Process Engineering · PFD · P&ID · H&MB

FEED & Basic Engineering (BEP)

Front-End Engineering Design and the Basic Engineering Package are where a project's technical risk is retired. Cerasus produces the definition a plant owner can commit money to: a design basis, flow schemes, balances and P&IDs that survive detailed engineering unchanged.

Class 5 → 3estimate accuracy narrowed through FEED
IFR · IFD · IFHP&ID revision gates we issue through
All casesdesign, turndown and alternate-feed balances
What it means

FEED & Basic Engineering (BEP), explained.

FEED converts a conceptual scheme into a defined process: capacity, feed and product specifications, operating envelope, and the equipment list that meets them. A Basic Engineering Package (BEP) is its deliverable set — the documents an EPC contractor needs to start detailed design without re-deriving the process.

Done well, FEED fixes the scope, sets the cost estimate accuracy (AACE Class 4/3), and embeds safety from the first P&ID revision: relief philosophy, isolation, control and shutdown philosophies are decided here, not patched in later.

What Cerasus provides

Scope of service

Design basis & philosophies

Process design basis, control, operating, isolation, relief and shutdown philosophies agreed with your operations team.

PFDs and heat & mass balances

Simulated (Aspen HYSYS / Aspen Plus) balances for design, turndown and alternate feed cases.

P&IDs and line lists

Issued through IFR → IFD → IFH with HAZOP actions closed on the drawings, not in a spreadsheet.

Equipment sizing & datasheets

Columns, vessels, exchangers, pumps and compressors sized to API/ASME; process datasheets ready for vendor enquiry.

Instrument & control definition

Instrument index, control narratives, cause & effect (C&E) matrices and SIS Safety Requirements Specification at FEED maturity.

Cost estimate support

Class 5/4 estimate basis with equipment MTO, utility summaries and plot-plan input.

How we do it

Our approach, step by step

Kick-off & basis

Agree capacity, feeds, products, site conditions and applicable standards.

Simulation & sizing

Build the process model; size equipment and lines for all operating cases.

Drawings & HAZOP

Issue PFDs and P&IDs; run HAZOP and close actions into the package.

BEP issue

Compile datasheets, philosophies, C&E and estimate basis for handover to EPC.

Standards & references

Codes this service follows

ISA 5.1Instrumentation symbols and identification for P&IDs
OSHA 29 CFR 1910.119(d)PSM — process safety information: design basis, safe limits, relief design
ISO 10628Diagrams for the chemical and petrochemical industry
ASME B31.3Process piping design
API 610 / 660 / 661Pumps, shell-and-tube and air-cooled exchangers
API 520 / 521Relief device sizing and pressure-relieving systems
IEC 61511Safety instrumented systems — SRS at FEED
AACE 18R-97Cost estimate classification (Class 5 → 3)
Client standardsOperator and company engineering specifications (e.g. Shell DEP, QatarEnergy)
Deliverables

What you receive

  • Process design basis
  • PFDs with H&MB (all cases)
  • P&IDs, line list, tie-in list
  • Equipment list and process datasheets
  • Control, operating, relief and isolation philosophies
  • C&E matrix and preliminary SRS
  • Utility summary and estimate basis
Why Cerasus

Practitioner-led, standards-based

200+ years of cumulative plant experienceA team that has operated major refineries and petrochemical plants, led by a chemical engineer with 35+ years in industry.
Certified leadershipTÜV-certified HAZOP Leader, CCPSC (AIChE/CCPS) and IEC 61508/61511 Functional Safety Engineer.
Global reach, Doha-basedCerasus Technologies QFZ LLC — registered in the Qatar Free Zones, with reach across geographical locations around the world.
Related services

Often scoped together

Request a consultation

Tell us about the unit and the problem.

Send a short brief — plant, service of interest and what you need to achieve — and a Cerasus engineer will respond with a proposed scope and next steps.

Prefer email or phone? sales@cerasus.ai · +974 5506 2743