25 marquee operators · 21 countries · verified roster
Bayer · Pfizer · TATA · Adani · JSW · ISRO · Siemens · Bosch · DuPont · Mahindra · Hindalco · and others
Safety Integrity Level allocation + Safety Instrumented System architecture.
What's the right SIL for the high-pressure trip on R-101? How many redundant sensors do you need to hit SIL 2? Will a 1oo2 architecture do, or do you need 2oo3? Determined by risk graph, LOPA, or fault tree · designed in compliance with IEC 61508 / 61511 · validated by PFD calculation. CEng MIE-signed.
SIL determination (the what's required) and SIS design (the how to implement) are often done by different parties · the safety consultant determines SIL, the I&C contractor designs the SIS. Result: gaps. The SIL was determined assuming a 1oo1 architecture but the I&C contractor proposes 1oo2 (over-engineered). The SIS uses sensors with worse PFD than the SIL assumed (under-engineered). We do both in one engagement so the SIL assumption and the SIS architecture are consistent.
CEng MIE India-signed deliverables · LiDAR-powered where applicable · digital twin handover ready · routes to the Risk + Safety + AMC practice lead within 24 hours.
Risk graph (qualitative · for low complexity), LOPA (semi-quantitative · most common), or fault tree (quantitative · for SIL 3+) per IEC 61511 Part 3.
Sensor (1oo1, 1oo2, 2oo3), logic solver (single, redundant, TÜV-certified), final element (1oo1, 1oo2) per SIL requirement. Voting logic + diagnostic coverage specified.
Probability of Failure on Demand computed per IEC 61508 Part 6 formulas. Validated against target SIL band. Markov modelling for complex architectures.
Proof test interval (1-5 years typical) selected. Detailed proof test procedure documented · including override management and bypass alarm rationalisation.
CEng MIE-signed SIL determination + SIS architecture pack. Ready for I&C contractor procurement or in-house engineering.
Reports reference the international and national standards your regulators, F500 audit teams, and corporate process safety leads cite. Every deliverable signed by a Chartered Engineer (CEng MIE India).
Three anonymised engagements from our verified roster · quantified outcomes, no client names disclosed without written permission.
14 safety functions · 11 SIL 2, 3 SIL 3. Architecture: SIL 2 = 1oo2 sensors, single TÜV-certified PLC, 1oo1 final. SIL 3 = 2oo3 sensors, redundant PLC, 1oo2 final. PFD validated.
SIS specification for 27 safety functions on new cracker. Aramco SAES-J-001 compliance. TÜV-certified PLC procurement specification.
Emergency Shutdown Levels 1 + 2 designed to SIL 3. Proof test procedure + bypass alarm rationalisation delivered.
Tell us your plant, region, and scope · a named Chartered Engineer responds within 24 hours.
Process safety, electrical safety and a 5-year AMC retainer under one practice. HAZOP chair, QRA modelling in PHAST + Safeti, LOPA + SIL determination to IEC 61511, arc flash hazard analysis to NFPA 70E (2024) + IS 13234, OISD + PESO + OSHA PSM + Factories Act safety audits. Hyderabad HQ chairs the HAZOP, Houston Operations services US OSHA PSM and Process Hazard Analysis renewals.
Eight programs spanning process safety, electrical safety and the long-tail 5-year AMC retainer. Every deliverable signed off by a staff Chartered Engineer or PE before client release. Audit-ready for OISD, PESO, OSHA PSM and Factories Act regimes.
HAZOP chair + scribe + node lead. IEC 61882 methodology. OISD-118 / OSHA PSM compliant.
Quantitative Risk Assessment in PHAST + Safeti. Dispersion, flammable, toxic, BLEVE.
Layer of Protection Analysis. SIL determination to IEC 61511 / 61508. SIF design review.
IEEE 1584-2018 + NFPA 70E (2024) + IS 13234. Hazard labels printed and installed.
OISD / PESO / OSHA / Factories Act statutory safety audits. Gap analysis and closure plan.
PSSR chair for greenfield + brownfield. Punch list ownership through to MoC closure.
Emergency Response Plan, on-site / off-site, drill calendar. NDMA + EPA + OISD-153 aligned.
Annual HAZOP refresh, arc flash update, SIL recertification, audit support, retained Chartered Engineer.
Service Hubs are country-neutral. Deliverables stamped to the standard that the receiving plant operates under, drawn from the international technical core, Indian statutory + BIS, and US codes.
Marquee discipline: VB Engineering markets only brands from the 63 Verified Client Roster. Case studies anonymised under NDA.
Representative engagements across the global delivery footprint. Client names withheld under NDA.
A major refining client required a 5-year HAZOP refresh on CDU + VDU units, with LOPA-driven SIL recommendations rolled into the SIS upgrade scope. OISD-118 alignment with full node-by-node revalidation.
Client name withheld · representative of multiple engagements in this category
A hyperscale operator required arc flash hazard analysis across a 14 MW campus, with NFPA 70E (2024) compliant warning labels printed and installed. IEEE 1584-2018 calculations validated against ETAP model.
Client name withheld · representative of multiple engagements in this category
A GCC pharma campus engaged the 5-year AMC retainer covering annual HAZOP refresh, arc flash recalculation under load growth, SIL recertification, OISD-equivalent safety audit support, and on-call Chartered Engineer access for incident response.
Client name withheld · representative of multiple engagements in this category
Annual HAZOP refresh, arc flash recalculation when load grows above 8% or topology changes, SIL recertification at year 3, OISD / PESO / OSHA audit support, on-call Chartered Engineer access for incident response (24-hour SLA), and pre-startup safety review chairing for any in-period brownfield modification.
IEEE 1584-2018 for arc flash incident energy calculation, NFPA 70E (2024) for the workplace electrical safety requirements and warning label format, IS 13234 for India statutory equivalent, and IEC 61482 for arc-rated PPE selection. Calculations validated against the ETAP power system model.
Yes. India HAZOPs chaired by a staff CEng MIE India. US OSHA PSM Process Hazard Analyses chaired through the Houston entity by a PE-credentialed safety lead. International (GCC + EU + AUS) engagements chaired by a CEng who carries the equivalent local recognition.
IEC 61511 (process sector) + IEC 61508 (electronic / electrical / programmable electronic safety systems). LOPA is the primary SIL determination methodology, with risk graph as a screening tool. Fault tree analysis for SIL-3 systems and above.
Yes. OISD-118 (process plant safety), OISD-145 (Hazard Identification and Risk Analysis), OISD-153 (emergency response), PESO Petroleum Rules 2002, OSHA 1910.119 PSM, EPA RMP, and Factories Act statutory inspections are all in scope. Audit support is the most-used line item in the 5-year AMC retainer.
Single-unit HAZOP: 3 to 5 weeks. Full plant HAZOP refresh: 6 to 10 weeks. Arc flash study: 4 to 8 weeks. QRA: 6 to 10 weeks. LOPA + SIL: 4 to 6 weeks. Safety audit: 2 to 4 weeks. 5-year AMC retainer: 60 months with quarterly cadence reviews.
Yes. The 5-year AMC retainer is a fixed annual fee covering all routine deliverables (HAZOP refresh, arc flash recalc, SIL recert, audit support). Out-of-scope incident response or brownfield modification PSSR work is invoiced separately at retainer-discounted day rates.
Yes. The practice runs an integrated bench. HAZOP, QRA, LOPA and SIL on the process side. Arc flash, short-circuit, protection coordination and NFPA 70E / IS 13234 on the electrical side. Same Chartered Engineer leadership across both for refineries, pharma and data centres where the two regimes overlap.
This Service Hub is country-neutral. For India statutory CEng MIE deliverables or US PE-stamped deliverables, the country variants carry the full local stack.
Tell us the asset, the audit cycle, and whether you need a one-shot study or a 5-year retainer. We respond within one working day with a scope, fee envelope, and the right country-team handoff plan.