Oil & Gas
Independent engineering for refinery emergency, offshore / FPSO, onshore drilling. ATEX / IECEx, API RP 14F, NORSOK. Türkiye, Stan Countries and MENA focus.
Refinery emergency to FPSO — off-the-shelf does not fit. Custom engineering for your site, your hazard zone, your regulator.
Oil & gas power engineering is the opposite of data-centre engineering: catalogue products do not work. Every site has different hazardous-area classification, different environmental conditions (offshore salt spray vs onshore desert vs arctic), different regulator (API / NORSOK / Major MENA NOCs), different operating profile (emergency-only vs continuous prime). ES4PS provides real custom engineering for this sector — focused on Türkiye, Stan Countries (Central Asia) and MENA.
Customer profile and our approach
Buyers in this sector know exactly what they want, have detailed specifications, and target specific equipment to match. But no standard manufacturer’s product matches a specification 100 % — the system must be configured from equipment that fully meets the spec. A single detail missed in the specification can make the equipment unusable on site.
Our approach: detailed specification review with no shortcuts; comparison against similar projects; improvable areas flagged with reasoned reports and documentation; flawless system engineered, calculated, and (where in scope) built.
Real problems in oil & gas power systems
1. Hazardous area classification (ATEX / IECEx / API)
If a genset is placed inside or adjacent to a hazardous zone (Zone 0 / 1 / 2 or Class I Div 1 / 2), the equipment + installation + maintenance strategy are entirely different. Wrong zone classification = explosion risk + insurance issues + regulator action.
Our approach:
- API RP 500 / RP 505 zone classification (US tradition)
- IEC 60079-10-1 zone classification (international)
- Equipment selection: Ex d, Ex e, Ex p, Ex i (certificate verification)
- Cable gland, conduit, junction box detail design
- Gas detection + emergency shutdown (ESD) interface
2. Harsh-environment derating
50 °C ambient + 95 % humidity + salt aerosol + sand + jet noise + seismic — this combination wipes out a standard genset’s operating envelope. Without derating: alternator overheats, radiator under-capacity, control-panel condensation, bearing failure.
Our approach:
- ISO 3046 + ISO 8528 derating curves (altitude + temperature + humidity)
- Site-specific derating model (custom Python)
- Alternator class H insulation (NEMA MG-1), tropicalised coating
- Radiator fan + intake filter sizing (sand + salt)
- Enclosure IP55, gland-plate sealing
- Control panel air-conditioned (condensation prevention)
3. Operating profile — emergency vs continuous prime
Refinery emergency: idle most of the time, runs ~100 h/year, but when it runs it is critical. Onshore drilling rig: 24/7 prime, 8000+ h/year. FPSO: prime + load-following, 25-year operation. These three profiles need different sizing, spare strategy, maintenance plan and emission compliance.
Our approach:
- Operating profile modelling (load + duty cycle + run hours)
- Emergency duty: ISO 8528 ESP rating + storage condition + start reliability
- Prime duty: ISO 8528 PRP / COP rating + scheduled maintenance + spare parts
- Refurbishment / life-extension strategy (25+ year FPSO)
4. Fuel — diesel + gas + dual-fuel
O&G sites usually have access to their own gas (associated gas, process gas, treated gas). Diesel-only? Gas-only? Dual-fuel? Fuel selection + tank sizing + gas treatment + safety must be designed together.
Our approach:
- Gas quality analysis (H2S, CO2, hydrocarbon spectrum)
- Gas treatment requirements (filtering, scrubbing, heating)
- Diesel storage (EN 12285 / API 650 / local code)
- Dual-fuel sequencing (gas first, diesel backup)
- STANAG 3609 (military-type single-fuel concept where adjacent)
- Fuel polishing (long-storage degradation prevention)
5. Grounding + bonding + lightning (offshore + onshore)
Oil & gas sites are perpetually exposed to static electricity + induced current + lightning. Grounding mesh design, equipotential bonding, surge protection — pre-requisites for a safe power system.
Our approach:
- IEEE 80 (substation grounding), API RP 2003 (static electricity)
- IEC 62305 lightning protection (structural + electrical)
- NORSOK E-001 (offshore)
- Bonding details: tank, pipe, equipment, structure
Typical engagements
A. Refinery emergency power (MENA — KSA + UAE)
Independent assessment of an existing refinery’s emergency power, or new upgrade design. Typically 1–5 MW × N+1 units, close to ATEX zones, very high availability required.
B. Offshore platform / FPSO power audit
Lifecycle assessment of an existing platform’s power system. Is sizing right for 25-year operation? Derating correct? Refurbishment strategy? Independent technical support for class society (DNV / ABS / LR) refresh.
C. Onshore drilling rig custom genset package
Custom rig power package for a drilling contractor: 1–2 MW × 3–4 units, dual-fuel, tropicalised, fast-mobilise. Design + procurement through partner network.
D. Gas processing / pipeline pumping station
Continuity-critical, fuel from own gas, regulator-specific emission compliance (EPA / EU MCPD / local). Sizing + emission control + remote monitoring + maintenance plan.
E. Hazardous area classification review
For an existing site — zone classification + equipment compliance review only. Independent technical report for insurance, audit or regulator questions.
MENA + Stan Countries — region specifics
Gulf regional regulations
- KSA (Saudi Arabia): SASO 2870, Royal Commission for Jubail and Yanbu, MODON industrial cities + major NOC internal standards
- UAE: ESMA, MOIAT, DEWA grid codes (Dubai), AADC / EWEC (Abu Dhabi) + major NOC internal standards
- Kuwait: Ministry of Electricity & Water + major NOC internal standards
- Qatar: Kahramaa grid codes + major NOC internal standards
- Gulf-wide: GSO IEC 60364 adoption, GSO-compliant certification
Stan Countries (Central Asia)
- Kazakhstan: ST RK + IEC adoption. Major NOC projects use EN + ASTM + API.
- Uzbekistan: O’zDSt + IEC. Petrochemical installations: IEC 60079 + API 14F + ATEX.
- Turkmenistan: GOST-Turkmen + IEC. Galkynysh-scale projects: API + IEC.
- Pakistan: Pakistan Standards (PS) — UK BS + IEC + US adaptations; PEC approval required.
MENA environmental conditions
- Ambient temperature: 50 °C+ (offshore Persian Gulf up to 55 °C)
- Humidity: 95 %+ (coastal regions)
- Sand + dust: AS / NZS 1170 + major MENA NOC sand / dust internal specifications
- Seismic: Kuwait (zone 2A), KSA (zone 0-2A generally low), UAE coastal (zone 1-2)
- Salt aerosol: offshore + coastal (effective even 200+ km inland)
MENA fuel + emission trends
- Low-sulphur diesel (Gulf ULSD 10 ppm becoming standard)
- Associated gas utilisation required (flare-reduction targets)
- EPA Tier 2 / 3 equivalent emission standards (local variation)
- CO2 capture readiness for new sites (retrofit-ready trend)
Standards — oil & gas specific
| Subject | Standards |
|---|---|
| Hazardous area (US tradition) | API RP 500, API RP 505, NFPA 70 Article 500-505, NEC |
| Hazardous area (international) | IEC 60079 (-0, -10-1, -14, -17, -29-1), ATEX 2014/34/EU, IECEx |
| Process safety | API RP 14C / 14F / 14J (offshore), API 752 / 753 (siting), HAZOP |
| Offshore (Norway / UK) | NORSOK E-001, NORSOK S-002, DNV-OS-D202, DNV-RU-SHIP |
| Refinery / petrochemical | API 650 (tanks), API 620, API 2003 (static), API Q1 / Q2 (QMS) |
| Fuel / military adjacency | STANAG 3609 (single-fuel concept), MIL-STD-810 (env testing) |
| Sizing + derating | ISO 8528, ISO 3046, NEMA MG-1 |
| Grounding + bonding | IEEE 80, API RP 2003, IEC 62305 (lightning) |
| Local (Gulf) | SASO 2870 (KSA), GSO IEC 60364, ESMA / MOIAT (UAE) + major MENA NOC internal standards |
| HSE (sector-specific) | API RP 75 (offshore SEMS), API RP 1173 (pipeline SMS), gas detection, ESD, FF&R |
Why ES4PS for oil & gas?
- OE-independent — no exclusive ties to any manufacturer; equipment chosen on engineering merit
- Standards-flexible — API + IEC + NORSOK + local Gulf, applied together; most firms know only one tradition
- MENA environmental experience — site-specific derating + harsh-environment design, not catalogue equipment
- Custom design + partner production network — design ours, build through certified partners (ATEX / IECEx certified)
- HSE-first — API RP 75 SEMS + IEC 61511 SIS + gas detection + ESD integration — safety-in-design, not just power-in-spec
- Fast turnaround — 48 hours to first response, 2–4 weeks for peer review, 3–6 months for full design