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25 marquee operators across 21 countries trust VB Engineering with their Discrete Event Simulation engagements.
VB Engineering Discrete Event Simulation from the Houston/Katy wholly-owned subsidiary. Country-native standards overlay. PE Texas + CEng MIE signed. Native handover to Wistwin · the sister Industry 4.0 digital twin SaaS.
For brownfield Gulf Coast refining majors in USA: throughput modelling, bottleneck analysis, utilisation forecasting, and what-if scenario evaluation, all on validated DES models with documented input data and confidence intervals.
From the Texas Gulf Coast to the Northern Virginia data-center corridor, a validated discrete-event simulation is what turns a capex proposal from an argument into evidence. The US Gulf Coast remains the densest concentration of brownfield refining, petrochem, and LNG capacity in the world. Add 14 GW of new data-center load committed by 2027 (Northern Virginia, Phoenix, Atlanta) and 50+ Tier-1 nuclear-adjacent OEM plants needing arc flash recertification on a 5-year clock under NFPA 70E 2024. New US refining capacity stopped being built in 1977. Petrochem expansion is brownfield debottlenecking. LNG capacity coming online uses existing brownfield port infrastructure. The 70E recertification clock and the data-center build-out are the two largest power-systems engineering markets in the country, and both are brownfield-first.
Process is captured to BPMN 2.0 and ISA-95 conventions. Input data validated to ASTM E2476 / VV&A practice. Output statistics confidence-bounded; no single-run results in the deliverable. Where the operator references NFPA 70E (Standard for Electrical Safety in the Workplace · 2024 edition) · IEEE 1584-2018 (Arc Flash Hazard Calculations) · NEC NFPA 70 · IEEE Color Books (399 Brown · 242 Buff · 141 Red · 142 Green · 493 Gold), the engineering reference layer aligns; the simulation methodology is invariant.
Steady-state throughput under base-case conditions, with bottleneck identification at the resource level. Where the bottleneck is constraint-stacked (two resources alternating as the constraint), the model surfaces this with utilisation curves rather than averages.
Capex options modelled side-by-side (debottleneck option A versus capacity-expansion option B versus operational-change option C). Each scenario reports throughput, utilisation, queue length, and Service Level confidence with bounds.
Random-failure modelling of the critical equipment fleet with MTBF / MTTR from the operator CMMS. Plant performance under cascading failure scenarios. The deliverable answers "how resilient is this plant" with a defensible number.
Where input data has measurement uncertainty (a recurring reality in USA brownfield plants), the deliverable includes sensitivity sweeps on the top input drivers so the operator sees which assumptions move the answer the most.
The FlexSim / AnyLogic / Simio model handed over with a run-book the operator's engineering team can use to run their own experiments. Where the operator subscribes to the Wistwin platform, the model integrates with the digital-twin layer directly.
Process flow captured on the live plant, walked with operations, modelled in FlexSim / AnyLogic / Simio. As-Is model validated against 4-6 weeks of historian data so the baseline matches reality before any what-if begins.
Three US-Gulf-Coast and data-center engagements that show the working pattern:
a 350,000 BPD refinery with 138 kV intake and 1980s-vintage 4160 V switchgear lineups.
The engagement: Insurer FM Global demanded arc flash labels conforming to IEEE 1584-2018 (2002 method retired); incident energy on the FCC unit MCC exceeded 40 cal/cm² with existing fuse coordination.
a 12 MTPA LNG terminal with 13.8 kV electric-drive compressor train.
The engagement: Start-up coordination study identified misgraded relays on the cryogenic process boiler feed pump; cascading trip risk during first-fill resolved by adaptive setting groups.
a 60 MW Tier-IV hyperscale colocation with N+1 paralleled UPS.
The engagement: Uptime Institute Tier-IV concurrent maintainability proof required end-to-end arc flash study at every voltage level including 480 V PDU output; legacy 2014 study was on retired 1584-2002 method.
Buyer questions we hear consistently across NFPA 70E recertification, insurer-driven, and OSHA-finding conversations in the US:
Tell us what scenario you need modelled in USA. A simulation lead responds inside 24 hours.
Scope Your Plant