NEN EN 976-1 : 1997

1 Scope
2 Normative references
3 Materials
    3.1 General
    3.2 Resins
    3.3 Reinforcement materials
    3.4 Processing agents
    3.5 Fillers
    3.6 Additives
    3.7 Structural core
    3.8 Rib core
4 Tank construction
    4.1 General
    4.2 Cylinder wall and tank end build-up
    4.3 Jointing of cylinder walls and/or tank ends
    4.4 Tank ends
    4.5 Manways
    4.6 Connected pipes and their fittings
    4.7 Lifting devices
    4.8 Anchoring devices
    4.9 Static charge dissipation
5 Requirements
    5.1 Appearance
    5.2 Dimensions
    5.3 Leaktightness
    5.4 Bending and torsion moments on fittings
    5.5 Internal impact resistance
    5.6 External impact resistance
    5.7 Lifting system loading
    5.8 Structural stability
    5.9 Laminate requirements
    5.10 Structural core properties
6 Test methods
    6.1 General
    6.2 Dimensions
    6.3 Leaktightness
    6.4 Bending and torsion moments on fittings
    6.5 Internal impact resistance
    6.6 External impact resistance
    6.7 Lifting system loading
    6.8 Negative pressure test
    6.9 Tests on laminate
    6.10 Structural core properties
7 Marking
Annexes
A (informative) A-deviations

Defines the requirements and associated test methods for horizontal, cylindrical single wall tanks manufactured from glass reinforced thermosetting resins (known as tanks) for accessories, for underground non-pressure storage of liquid petroleum based fuels.