Products we store
Four products, each held in tanks suited to it and released against its certificate of analysis. The limits below are the published standards.
Product register
The standard behind each product
| Product | Standard | Key limits | |||
|---|---|---|---|---|---|
| Diesel EN 590, 10 ppm | EN 590:2025 | Sulfurmax 10.0 mg/kg | Density at 15 °C815.0 – 845.0 kg/m³ | Flash pointabove 55.0 °C | Cetane numbermin 51.0 |
| Jet fuel A-1 | DEF STAN 91-091 | Density at 15 °C775.0 – 840.0 kg/m³ | Flash pointmin 38.0 °C | Freezing pointmax −47.0 °C | Sulfur, totalmax 0.30 % m/m |
| Fuel oil No. 6 | ASTM D396-24 | Flash pointmin 60 °C | Viscosity at 100 °C15.0 – 50.0 mm²/s | Water and sedimentmax 2.00 % v/v | Sulfurper contract and local law |
| Crude oil | Assay of each grade | BasisAssay of the grade | ReportedAPI gravity, sulfur, BS&W | ReferenceBrent Blend, WTI Midland | HandlingHeated and mixed where needed |
Ultra-low sulfur automotive diesel
Diesel EN 590, 10 ppm
Road diesel to the European standard, with sulfur held to 10 mg/kg. Stored on dedicated lines so it never picks up sulfur from heavier grades, and finished with FAME and additives to the buyer’s specification.
- Standard
- EN 590:2025Automotive fuels — Diesel — Requirements and test methods. Supersedes EN 590:2022.
- Appearance
- Clear and bright
- Tanks
- Fixed cone roof tanks on dedicated lines
- Blending
- FAME and additive injection to the buyer’s recipe
- Cold weather
- Grade and CFPP grade confirmed before winter releases
- Release
- Certificate of analysis with every batch
SpecificationEN 590:2025
| Property | Unit | Limit | Method |
|---|---|---|---|
| Cetane number | — | min 51.0 | EN ISO 5165 |
| Cetane index | — | min 46.0 | EN ISO 4264 |
| Density at 15 °C | kg/m³ | 815.0 – 845.0 kg/m³ | EN ISO 12185 / EN ISO 3675 |
| Polycyclic aromatic hydrocarbons | % (m/m) | max 8.0 % (m/m) | EN 12916 |
| Sulfur content | mg/kg | max 10.0 mg/kg | EN ISO 20846 / 20884 / 13032 |
| Manganese content | mg/l | max 2.0 mg/l | EN 16576 |
| Flash point | °C | above 55.0 °C | EN ISO 2719 |
| Carbon residue (on 10 % distillation residue) | % (m/m) | max 0.30 % (m/m) | EN ISO 10370 |
| Ash content | % (m/m) | max 0.010 % (m/m) | EN ISO 6245 |
| Water content | % (m/m) | max 0.020 % (m/m) | EN ISO 12937 |
| Total contamination | mg/kg | max 24 mg/kg | EN 12662 |
| Particles ≥ 4 µm, at the point of particle certification | counts/ml | max 10 000 counts/ml | IP 630 |
| Copper strip corrosion (3 h at 50 °C) | rating | class 1 | EN ISO 2160 |
| FAME content | % (V/V) | max 7.0 % (V/V) | EN 14078 |
| Oxidation stability | g/m³ | max 25 g/m³ | EN ISO 12205 |
| Oxidation stability, FAME above 2.0 % (V/V) | h | min 20.0 (EN 15751) or min 60.00 (EN 16091) h | EN 15751 / EN 16091 |
| Lubricity, wear scar diameter at 60 °C | µm | max 460 µm | EN ISO 12156-1 |
| Viscosity at 40 °C | mm²/s | 2.000 – 4.500 mm²/s | EN ISO 3104 / EN ISO 18335 |
| Distillation: recovered at 250 °C | % (V/V) | below 65 % (V/V) | EN ISO 3405 |
| Distillation: recovered at 350 °C | % (V/V) | min 85 % (V/V) | EN ISO 3405 |
| Distillation: 95 % (V/V) recovered at | °C | max 360.0 °C | EN ISO 3405 |
| CFPP, grade A / B / C / D / E / F | °C | max +5 / 0 / −5 / −10 / −15 / −20 °C | EN 116 / EN 16329 |
Generally applicable requirements for temperate climates. Each country sets its summer and winter CFPP grade in its national annex.
Aviation turbine fuel, kerosene type
Jet fuel A-1
Kerosene-type fuel for civil aviation, held in dedicated tanks under a documented quality chain from receipt to release, so every batch leaves with its certificate intact.
- Standard
- DEF STAN 91-091Turbine Fuel, Kerosene Type, Jet A-1. Limits below as published in Issue 16; Issue 18 (February 2025) is current.
- Appearance
- Clear, bright and visually free from solid matter and undissolved water
- Tanks
- Dedicated, epoxy-lined tanks with floating suction
- Quality chain
- Recertification after every tank movement
- Water control
- Tank sumps drained; filter water separators on outbound lines
- Segregation
- Dedicated lines, pumps and loading arms
SpecificationDEF STAN 91-091
| Property | Unit | Limit | Method |
|---|---|---|---|
| Total acidity | mg KOH/g | max 0.015 mg KOH/g | ASTM D3242 / IP 354 |
| Aromatics | % v/v | max 25.0 % v/v | ASTM D1319 / IP 156 |
| Sulfur, total | % m/m | max 0.30 % m/m | IP 336 |
| Sulfur, mercaptan | % m/m | max 0.0030 % m/m | ASTM D3227 / IP 342 |
| Distillation: 10 % recovery | °C | max 205.0 °C | ASTM D86 / IP 123 |
| Distillation: end point | °C | max 300.0 °C | ASTM D86 / IP 123 |
| Flash point | °C | min 38.0 °C | IP 170 |
| Density at 15 °C | kg/m³ | 775.0 – 840.0 kg/m³ | ASTM D4052 / IP 365 |
| Freezing point | °C | max −47.0 °C | ASTM D2386 / IP 16 |
| Viscosity at −20 °C | mm²/s | max 8.000 mm²/s | ASTM D445 / IP 71 |
| Smoke point | mm | min 25.0, or min 18.0 with naphthalenes max 3.00 % v/v mm | ASTM D1322 / IP 598 |
| Specific energy | MJ/kg | min 42.80 MJ/kg | per DEF STAN 91-091 |
| Copper strip corrosion | class | max 1 | ASTM D130 / IP 154 |
| Thermal stability (JFTOT) at min 260 °C: pressure differential | mm Hg | max 25 mm Hg | ASTM D3241 / IP 323 |
| Existent gum | mg/100 ml | max 7 mg/100 ml | IP 540 |
| Electrical conductivity | pS/m | 50 – 600 pS/m | ASTM D2624 / IP 274 |
| FAME content | mg/kg | less than 5.0 mg/kg | per DEF STAN 91-091 |
A selection of the requirements. The full specification also covers water separation, particulate contamination, additives and thermal stability tube ratings.
Residual fuel oil for industrial burners
Fuel oil No. 6
Heavy residual fuel for industrial burners, kept heated and circulated so it stays pumpable. Listed on the old site as “virgin fuel oil D6”; the standard calls it Grade No. 6.
- Standard
- ASTM D396-24Standard Specification for Fuel Oils, Table 2, Grade No. 6.
- Appearance
- Black and viscous
- Tanks
- Insulated fixed roof tanks
- Heating
- Steam or hot-oil coils hold it above its pour point
- Circulation
- Mixers keep the tank free of sludge
- Release
- Viscosity and flash point confirmed before loading
SpecificationASTM D396-24
| Property | Unit | Limit | Method |
|---|---|---|---|
| Flash point | °C | min 60 °C | ASTM D93, procedure B |
| Water and sediment | % v/v | max 2.00 % v/v | ASTM D95 + ASTM D473 |
| Kinematic viscosity at 100 °C | mm²/s | 15.0 – 50.0 mm²/s | ASTM D445 |
| Pour point | °C | not specified for Grade No. 6 °C | — |
| Density | kg/m³ | not specified for Grade No. 6 kg/m³ | — |
Sulfur limits for residual fuel are set by local regulation and the sales contract, not by the grade.
Light, medium and heavy grades, sweet and sour
Crude oil
Held for traders and refiners between voyages, or blended to a refinery’s feed specification. Waxy and heavy grades are kept heated and mixed so they stay pumpable.
- Standard
- Assay of each gradeCrude is bought and sold against the assay of its grade; these are the properties we report on receipt.
- Appearance
- Dark brown to black
- Tanks
- External floating roof tanks with side-entry mixers
- Heating
- Coils keep waxy and heavy grades above their pour point
- Vapour control
- Floating roofs limit breathing losses
- Blending
- In-tank blending to a refinery feed specification
Properties reported on receiptAssay of each grade
| Property | Unit | Limit | Method |
|---|---|---|---|
| API gravity | °API | reported °API | ASTM D287 |
| Sulfur | % m/m | reported % m/m | ASTM D4294 |
| Water and sediment | % v/v | reported % v/v | ASTM D4007 |
| Pour point | °C | reported °C | ASTM D5853 |
| Vapour pressure | kPa | reported kPa | ASTM D6377 |
| Salt content | mg/kg | reported mg/kg | ASTM D3230 |
| Total acid number | mg KOH/g | reported mg KOH/g | ASTM D664 |
Limits come from the sales contract and the grade’s assay.
Reference grades
| Grade | Typical quality | Source |
|---|---|---|
| Brent Blend | Light and sweet: about 38° API, about 0.4 % m/m sulfur | bp crude assays |
| WTI Midland | 40° to 44° API, sulfur max 0.20 % m/m | Platts specification |
Storing a grade that is not listed?
Tell us the product and its standard. We confirm compatibility, tank type and segregation before we quote.