Improved hold-down spring clamps on fuel assembly top nozzle.

摘要

The invention concerns a fuel-assembly top nozzle with improved clamps for the base ends (48B) of hold-down spring assemblies (48). Each clamp (68) includes (a) a clamp block (72A) which is formed integral with the top nozzle (22) and has formed therein two interconnected clamp slots (76) each of which is open at the front and outer side thereof to enable sideways insertion therein of the base end (48B) of the associated spring assembly (48A), and (b) a fastener (74) for clamping the inserted base end of the spring assembly securely in place, the fastener (74) having an externally threaded head (92) which is threadedly engaged in an internally threaded opening of the clamp block (72).