| Test Method | Application | |--------------|--------------| | | 100% of welds. | | Radiography (RT) | All shell butt welds – typically 10–20% spot (higher for thicker plates). | | Ultrasonic testing (UT) | Alternative to RT; required for thicker shells. | | Magnetic particle / Dye penetrant | Bottom-to-shell junction, nozzles, repairs. | | Vacuum box testing | Bottom plates (for leaks). | | Hydrostatic test | Mandatory – fill tank to design liquid level + test pressure. Hold for minimum 24 hours. | | Tank settlement monitoring | During hydrostatic test (recorded at multiple points). |
Site-built vertical cylinders with flat bottoms. It covers both open-top and closed-top designs, including those with internal or external floating roofs.
Organizations like BSI (UK), DIN (Germany), or AFNOR (France).
One of the most frequent questions asked by industry professionals is about the difference between the European and the American API 650 standard. While both cover welded steel tanks for oil storage, they have distinct origins and technical nuances. En 14015 Pdf
Small workshop-fabricated tanks transported fully assembled (covered by EN 12285). Tanks with internal pressures exceeding 60 mbar. Structural Components and Design Rules
The scope of EN 14015 includes the following:
: Includes requirements for welding procedures, non-destructive testing (NDT), and hydrostatic leak testing before the tank is put into service. Where to Access the Document | | Magnetic particle / Dye penetrant |
Proper containment design reduces the risk of spills that could contaminate groundwater.
This article provides an in-depth look at what the EN 14015 standard entails, why it matters, and how it is applied in the modern industrial landscape. What is EN 14015?
: Applicable to steels with a maximum design strength of ≤ 260 N/mm² , typically carbon or stainless steel. Hold for minimum 24 hours
: It primarily covers storage tanks used for chemicals, petroleum products, and other liquids that are typically non-refrigerated.
Engineers often compare EN 14015 to , the American Petroleum Institute standard widely used in the Americas. Origin European Committee for Standardization (CEN) American Petroleum Institute (API) Pressure Limit Up to 500 mbar Up to 17.2 kPa (2.5 psi) / API 620 used for higher Material Formats European steel grades (EN 10028) ASTM materials Wind/Seismic Aligned with Eurocodes (EN 1991 / EN 1998) Aligned with ASCE 7 / US codes