Storinntak

Storinntak, a term used in Norwegian engineering, refers to a large intake structure designed to withdraw water or other fluids from a natural source or reservoir for use in municipal water supply, treatment, hydropower, or industrial cooling. It serves as the first major component in a water collection system, separating intake operations from downstream processes and managing flow into conduits or tunnels.

Typical storinntak installations include an intake structure at the water body with screens or trash racks to remove debris, a conduit or tunnel that carries water to a treatment plant or reservoir, and gates or valves for flow control. Some installations also feature an intake tower, velocity caps to reduce sediment intake, air relief, and fish-friendly features to minimize ecological impact.

Storinntak may be configured for surface water intakes or subsurface intakes, depending on the source and local conditions. Design considerations include sediment management, debris handling, ice or sediment-induced blockages, and the prevention of entrainment and impingement of aquatic life. Environmental and regulatory aspects often require fish protection, intake screening standards, and environmental impact assessments.

Operation and maintenance involve regular cleaning of screens, inspection of gates and liners, sediment and debris removal, and protection against freezing in cold climates. Storinntak are critical components in water supply systems, hydroelectric headworks, and industrial cooling circuits, balancing reliable flow with environmental and safety requirements.