54Commissioning and operation7.2.6 Tightness testPerformance:£ Close operating seal, as described inmanual ( chapter 7.2.5)£ Close emergency seal (1)( chapter 4.5.3)£ Remove locking screw from testconnection (2)£ Insert test funnel (3)£ Fill in clear water up to upper edge oftest funnel (100 mm)£ Observe water level for 10 min. Ifwater level sinks, replenish with clearwater until a water column of 100 mmis again reached. Note down reple-nished water quantity.231
