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RO-78-05:on 780509,set point adjusting hydroset curve varied according to valve orifice type.Caused by procedural inadequacy.Questionable valves reset utilizing proper hydroset curve.LER encl.

Accession Number: ML19319D798

Date Released: Friday, October 25, 2024

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• ML19319D797 - RO-78-05:on 780509,set point adjusting hydroset curve varied according to valve orifice type.Caused by procedural inadequacy.Questionable valves reset utilizing proper hydroset curve.LER encl. (2 page(s), 5/17/1978)
• ML19319D800 - LER 78-005/01T-0:on 780509,four main steam code safety valves found improperly set in nonconservative direction. Caused by procedural inadequacy.Maint procedure included hydroset curve for one type orifice.Procedure revised. (1 page(s), 5/17/1978)