05000267/LER-1981-026-03, /03L-0:on 810331,snubbers Removed from Svc for Mod Resulting in Degraded Mode of Limiting Condition of Operation 4.3.10.Caused by Requirement of two-inch & Under Seismic Analysis Program
05000267/LER-1983-016, Forwards LER 83-016/03L-0.Detailed Event Analysis Encl
05000267/LER-1983-004, Forwards LER 83-004/03L-0.Detailed Event Analysis Encl
05000267/LER-1988-013, :on 881007,Class IA Snubber BFS-824 Not Maintained/Surveilled Per Tech Spec 4.3.10.Caused by Inadequate procedure.BFS-824 Incorporated Into Class I Snubber Listing
05000267/LER-1978-030-03, /03L-0:on 780912,five Hydraulic Snubbers Found Inoperable.Caused by Empty Oil Reservoirs.Reservoirs Filled & Surveillance Interval Adjusted
05000267/LER-1977-004, :on 770118,during Routine Surveillance of Class 1 Hydraulic Shock Suppressors,Four Suppressors Were Inoperable.Three Inoperable Due to Empty Oil Reservoirs & One Clevis Pin Needed Replacing
05000267/LER-1983-047-03, /03L-0:on 831102,one Class I Hydraulic Shock Suppressor Found Inoperable.Caused by Leaking Reservoir Gaskets Allowing Loss of Oil.Snubber Replaced W/Tested & Qualified Spare
05000267/LER-1983-031-03, /03L-0:on 830818,one Hydraulic Snubber Found Inoperable.Caused by Leaking Reservoir Fittings Allowing Loss of Oil.Snubber Replaced W/Rebuilt Snubber
05000267/LER-1983-022-03, W/Reactor Operating at Approx 13% Power,One Class I Hydraulic Shock Suppressor Found Inoperable.Faulty Rod Seal Allowed Gradual Loss of Operating Fluid from Reservoir.Snubber Replaced
05000267/LER-1983-016-03, /03L-0:on 830331,two Class 1 Hydraulic Shock Suppressors Found Inoperable.Caused by Fully Extended Snubbers,Due to Thermal Pipe Movement.One Snubber Adjusted & Other Replaced
05000267/LER-1981-064-03, /03L-0:on 811017,30 & 1102,four Class One Snubbers Were Out of Svc.One Snubber Ioperable Due to Thermal Pipe Expansion.Three Removed for Support Structure Welding Required by Seismic Analysis Program
05000267/LER-1981-064, Forwards LER 81-064/03L-0.Detailed Event Analysis Encl
05000267/LER-1981-056, Forwards LER 81-056/03L-0.Detailed Event Analysis Encl
05000267/LER-1981-056-03, /03L-0:on 810821 & 0902,two Class I Snubbers Were Removed from Svc During Reactor Power Operation.First Event Caused by Need for Structural Mods,Second by Need to Modify Valve Block from Grinnell to Racine
05000267/LER-1981-059, Forwards LER 81-059/03L-0.Detailed Event Analysis Encl
05000267/LER-1982-032-03, /03L-0:on 820803,ten Hydraulic Shock Suppressors Found Inoperable.Caused by Lack of Oil,Improper Reservoir Orientation or O-ring & Seal Leakage & Thermal Pipe Expansion.Snubbers Replaced
05000267/LER-1981-051, Forwards LER 81-051/03L-0.Detailed Event Analysis Encl
05000267/LER-1981-043, Forwards LER 81-043/03L-0.Detailed Event Analysis Encl
05000267/LER-1981-040, Forwards LER 81-040/03L-0.Detailed Event Analysis Encl
05000267/LER-1981-038, Forwards LER 81-038/03L-0.Detailed Event Analysis Encl
05000267/LER-1981-038-03, /03L-0:on 810507,two Class I Hydraulic Shock Suppressors Removed from Svc.Caused by Decision to Modify Suppressors to Original Configuration W/Zero Bleed Rate Block Valves
05000267/LER-1981-032, Forwards LER 81-032/03L-0.Detailed Event Analysis Encl
05000267/LER-1981-026, Forwards LER 81-026/03L-0.Detailed Event Analysis Encl
05000267/LER-1980-050-03, /03L-0:on 800915,during Piping Audit,Two Hydraulic Snubbers Installed on Class I Piping Were Not Routinely Tested.Caused by Snubbers Omitted from Testing Table Due to Oversight.Procedure Revised
05000267/LER-1980-027-03, /03L-0:on 800603 to 11,three Separate Instances of Reactor Operation Took Place W/Inoperable Class 1 Shock Suppressors.Caused by Rotated Reservoir,Low Oil Level Due to Cracked Fitting & Piston Rod Seal Leak
05000267/LER-1980-014-03, /03L-0:on 800311,during Reactor Shutdown,Emergency Feedwater Snubber BFS-228E Observed to Be Missing Pin at Piston Rod Eye & Rendered Inoperable.No Cause Stated for Missing Pin.New Pin Fabricated & Installed
05000267/LER-1980-006-03, /03L-0:on 800218,w/reactor at Less than 2% Power, Vent Stack Snubber VSS-117 Was Inoperable & Degraded Mode of Tech Spec LCO 4.3.10 Existed.Caused by Taking Reactor Critical W/Vent Stack Snubber Out of Svc for Maint
05000267/LER-1980-004-03, /03L-0:on 800114,following Performance of Class I Shock Suppressor Surveillance Test,Two Snubbers Found Inoperable.Caused by Personnel Using Snubber Units as Stepping Platforms.Snubbers Repositioned
05000267/LER-1980-003-03, /03L-0:on 800110,while Reactor Was in Shutdown Condition,Three Hangers Found Impaired,Which Caused 21 Sys to Be Impaired.Caused by Failure to Reinstall Hangers Following Removal for Sys Mod.Hangers Will Be Modified
05000267/LER-1979-064-03, /03L-0:on 791205,during Surveillance Test on Class 1 Hydraulic Snubbers,Three Snubbers Found Inoperable & Two Installed W/Incorrect Orientation.Caused by Piston Ring Being Out of Tolerance on One Snubber
05000267/LER-1979-058-03, /03L-0:on 791107,during Reactor Shutdown,Line Supplying Backup Bearing Water to 1A Helium Circulator Determined to Be Impaired Due to Impaired Hanger.Caused by Missing Anchor Bolt & Stripped Anchor Bolt Shield
05000267/LER-1979-036-03, /03L-0:on 790910,cold Reheat Snubber CRS-262 Inoperable W/Reactor in Shutdown Condition.Caused by Missing Pin That Kept Snubber from Being Properly Attached to Pipe. New Pin Fabricated & Installed.Snubber Returned to Svc
05000267/LER-1979-047-03, /03L-0:on 791010,prestressed Concrete Realtor Vessel Cooling Water Sys Determined Impaired.Caused by Insufficient Hangar Base Plate & Bolts Out of Concrete.Base Redesigned & Modified to Provide Adequate Strength
05000267/LER-1977-001, :on 770104,during Rise to full-power Testing,Maint Personnel Observed No Visible Oil Level in BFS-297 Snubber on Class 1 Piping Sys.Caused by Normal Wear.Pin Gland Tightened & Oil Reservoir Refilled
05000267/LER-1982-037-03, /03L-0:on 820921,27 & 29,hydraulic Oil Snubber HOS-14,main Steam Snubbers MSS-29 & MSS-258 & Cold Reheat Snubber CRS-262 Found Inoperable.Caused by Extended Length of Piston Stroke.Snubbers Tested & Reinstalled