Water Retaining Facilities Ordinance (WRFO) (WRFO)
English is not an official language of the Swiss Confederation. This translation is provided for information purposes only and has no legal force.
Art. 5 Structural safety
(Art. 5 para. 1 WRFA) 1 Any person who wishes to build, modify or operate a water retaining facility must ensure the safety of the dam, the safety-relevant auxiliary installations and the reservoir under normal, extraordinary and extreme loading cases. 2 Normal loading cases are combinations of actions that stress the water retaining facility continuously or regularly, especially when the reservoir is full and empty. No damage to the water retaining facility is permitted under these loading cases. 3 Extraordinary loading cases are temporary combinations of actions, such as may arise in particular in an extraordinary flood situation, due to avalanches or debris flows, due to ice pressure or due to pore water pressure conditions as a result of the construction process or rapid drawdown. Under these loading cases, minor damage to the water retaining facility is permitted. 4 Extreme loading cases are in particular an extreme flood situation and earthquakes. Damage to the water retaining fa
Art. 6 Monitoring
(Art. 8 para. 2 WRFA) During the construction, commissioning and operation of a water retaining facility, the operator must by means of inspections and measurements ensure the early detection of condition or behavioural features that may indicate a reduction in the safety of the water retaining facility.
Art. 7 Emergency concept
(Art. 10 WRFA) During the construction, commissioning and operation of a water retaining facility, the operator must take precautions for the event that the safety of the water retaining facility can no longer be guaranteed.