EN 14015 is the primary European standard for the design and manufacture of site-built, vertical, cylindrical, above-ground, welded steel tanks used for storing liquids. It specifically addresses flat-bottomed tanks operating at ambient temperatures or higher, typically used for storing crude oil, petrol, chemicals, and water. Core Technical Scope
The BS EN 14015 standard dictates requirements for materials, fabrication, erection, and testing. Key technical limits include:
Operating Pressure: Generally less than 500 mbar internal pressure and no lower than 20 mbar internal negative pressure. Some specific iterations limit design pressure to 60 mbar. Temperature Range: Metal temperatures between -40∘Cnegative 40 raised to the composed with power C +300∘Cpositive 300 raised to the composed with power C
Tank Geometry: Site-built vertical cylinders with flat bottoms. It covers both open-top and closed-top designs, including those with internal or external floating roofs.
Materials: Primarily carbon and stainless steel (often duplex variants), provided the maximum design strength does not exceed Key Design & Manufacturing Requirements
The standard ensures structural and fabrication integrity through rigorous guidelines: Detailed Comparison Between API 650, API 620, EN 14015 En 14015 Pdf
standard provides comprehensive specifications for the design and manufacture of site-built, vertical, cylindrical, above-ground, welded steel tanks used to store liquids at ambient and higher temperatures. This standard primarily focuses on ensuring structural integrity and fabrication quality. iTeh Standards Scope and Application Limits
The standard applies to tanks with specific operational characteristics: Design Pressure : Less than internal pressure and not lower than internal negative pressure. Temperature Range : Design metal temperature between
: Applicable to weldable non-alloy and alloy steels with a maximum design strength of Exclusions : It does not cover refrigerated tanks (covered by prEN 14620 ), process safety, firefighting, or in-service maintenance. iTeh Standards Key Design and Construction Requirements
: Includes specifications for plates, structural sections, forgings, pipes, and welding consumables. It also mandates Charpy V-notch impact requirements for material toughness. Design Loads
: Engineers must calculate for liquid-induced loads, internal pressure, thermal effects, wind, snow, and seismic activity. Components Shell and Bottom EN 14015 is the primary European standard for
: Specifies plate arrangements, joint types, and stiffening rings (e.g., wind girders).
: Covers fixed roofs (cone or dome), membrane roofs, and floating roofs. A recent amendment (
) specifically adds requirements for self-supporting aluminium dome roofs. Foundations
: Requires a stable, level, and flat surface. Typical designs include concrete ringwalls (at least
thick) or crushed stone/gravel ringwalls for load distribution. iTeh Standards Fabrication, Testing, and Inspection Steel grades : S235, S275, S355 (to EN
Compliance requires rigorous verification procedures before the tank can be commissioned:
Here’s a concise, solid review of EN 14015:2004 (the standard for the design and manufacture of vertical, cylindrical, above-ground, welded steel storage tanks for liquids). Since the full PDF is copyrighted, this review focuses on its scope, structure, key technical content, strengths, and limitations to help you decide if it’s the right standard for your project.
For educational or research purposes, check:
When a project tender specifies "Design to EN 14015," procurement teams need to verify requirements for material grades (e.g., EN 10025 steel plates) and corrosion allowances.
| Section | Focus | |--------|-------| | Clause 4 – Materials | Steel grades, impact testing, and allowable stresses (similar to but not identical to API 650). | | Clause 5 – Design | Shell thickness (1m method vs. variable-design-point), wind & seismic loads (Eurocode-based), roof types (fixed cone, dome, floating roofs briefly covered). | | Clause 6 – Fabrication | Tolerances, welding procedures (EN 1011-4), edge preparation, and dimensional checks. | | Clause 7 – Inspection & Testing | Radiography (RT) requirements, vacuum box testing of bottom plates, hydrostatic test (1.25 x design pressure or 1.1 x max fill). | | Annexes | Annex A – Alternative shell design (variable point method). Annex B – Anchor bolt chairs. Annex C – Frangible roof design (for overpressure protection). |
| Aspect | EN 14015 | API 650 | |--------|----------|---------| | Metric units | Native (mm, MPa, °C) | Imperial (inches, psi, °F) – metric conversions available | | European material grades | Directly referenced | Requires cross-reference | | PED compliance | Easier to achieve | Additional work needed | | Foundation settlement criteria | More detailed | Less prescriptive |