Indian LNG Regasification Terminal MEP — NFPA 59A + EN ISO 16903 + SIGTTO + OISD-STD-194
A 15 MTPA Indian LNG regasification terminal demands ₹3,802 Cr MEP capex covering 3 × 180,000 m³ full-containment tanks + 6 × SCV regasifier + BOG compressor + recondenser + marine jetty. NFPA 59A + EN ISO 16903 + SIGTTO + OISD-STD-194 + IGC Code + PNGRB govern. Landed LNG cost ₹22-28/MMBtu. Three failures: ORV vs SCV default to SCV without seawater-discharge study, BOG management under-spec (smaller terminals flare methane), vapour-fence CIA dispersion modelling skipped failing PESO licence at expansion.
Indian LNG regasification terminal MEP framework
India LNG infrastructure (Petronet Dahej, Hazira, Mundra, Ennore, Kochi, Dabhol, GAIL, IOCL Dabhol expansion) regasifies LNG (-162°C) into pipeline natural gas. Standards stack — NFPA 59A (LNG Production Storage Transfer) + EN ISO 16903 (LNG Production Storage Transfer) + SIGTTO (Society of International Gas Tanker + Terminal Operators) + OISD-STD-194 (Imported LNG Terminal Receipt) + IGC Code + IEC 61882 (HAZOP) + PNGRB Pipeline Regulations + PESO Petroleum Rules 2002. Regasification uses Open Rack Vaporiser (ORV) using seawater or Submerged Combustion Vaporiser (SCV).
15 MTPA LNG regasification terminal MEP scope
| System | Capacity | Standard | Capex (₹ Cr) |
|---|---|---|---|
| LNG storage tank (full-containment) | 3 × 180,000 m³ | EN 14620 + API 620 | 1,850 (3 tanks) |
| Boil-off-gas (BOG) compression + recondenser | 30 t/hr | NFPA 59A | 185 |
| Submerged Combustion Vaporiser (SCV) | 6 × 350 t/hr | NFPA 59A | 620 (6 SCV) |
| Pipeline send-out | 15 MTPA = ~85 MMSCMD | PNGRB | 280 |
| Marine jetty + unloading arms | 170,000 m³ LNG carrier | SIGTTO | 520 |
| Fire-fighting (seawater + foam + dry chemical) | — | OISD-STD-194 | 185 |
| Emergency shutdown (ESD) | 3-level safety | API + IGC | 85 |
| Vapour fence + dispersion | — | CIA modelling | 42 |
| Cold-energy utilisation | cooling for adjacent industry / cold-storage | — | 35 |
| Total | — | — | 3,802 |
| LNG cost (Henry Hub + shipping + regas) | — | — | ₹22-28/MMBtu landed |
Three Indian LNG terminal MEP failures
- ORV vs SCV selection per local water + emissions — ORV (seawater heat) lower OPEX but discharges -5°C seawater violating coastal regulation; SCV burns ~1.5 % of throughput as natural gas but has CO2 emissions. Indian terminals routinely default to SCV without ORV-seawater study for low-marine-life sites.
- BOG management under-spec — boil-off from tanks 0.05 % volume/day creates pressure rise. Need BOG compressor + recondenser to capture + return to tank. Indian smaller terminals flare BOG = methane emissions + regulatory issue.
- Vapour-fence dispersion modelling skipped — LNG leak forms cold dense vapour cloud. CIA (CFD-based dispersion) modelling per NFPA 59A + EN 1473 mandatory for site planning. Indian terminals often skip + face PESO licence rejection at expansion phase.
- NFPA 59A:2024 — Standard for the Production Storage + Handling of LNG.
- EN ISO 16903:2015 — Petroleum + Natural Gas Industries Characteristics of LNG influencing design + material selection.
- EN 14620 series — Site Built Vertical Cylindrical Flat-Bottomed Steel Tanks for Storage of Refrigerated Liquefied Gases.
- SIGTTO Liquefied Gas Handling Principles on Ships + in Terminals 5th Ed 2024.
- OISD-STD-194 — Imported LNG Terminal Receipt + Send-out.
- API 620:2024 — Design + Construction of Large Welded Low-Pressure Storage Tanks.
- PNGRB Petroleum + Natural Gas Regulatory Board Pipeline Regulations 2024.
- IGC Code 2024 — International Code for the Construction + Equipment of Ships Carrying Liquefied Gases in Bulk.