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	Issue date	From	Title	Project stage
ML20097J849	13 September 1984	Xcel Energy Gahm J	Clarifies Re Method to Be Used to Enhance Moisture Removal If Request for Relief from 100 Psia Pcrv Pressure Restriction Granted.Helium Mass Flow Rate Through Circulator Differential Pressure Increased	Request
ML20099C963	29 October 1984	Xcel Energy Gahm J Gahm G	Ro:On 840911,moisture Discovered in Purified Helium Supply Line Wells During Installation of New Moisture Sensing Probes.Tests Indicate Leak Source Is Circulator Penetration A.Rate of Leak Approx .05 Gpm	Other
ML20106B611	24 January 1985	Xcel Energy Lee O	Informs That Concern W/Seriousness of Moisture Ingress Events & Other Impediments to Obtaining Realistic Plant Operation Prompted Corporate Mgt to Form Improvement Committee Under Chairmanship of Rf Walker	Other
ML20112G517	24 January 1985	Xcel Energy Lee O	Responds to HR Denton Identifying Requirement for Development of Plan to Implement Mods Recommended by Moisture Ingress Committee.Improvement Committee Formed to Evaluate Innovative & Substantial Plant Mods	Other
ML20112G495	12 March 1985	Xcel Energy Lee O	Responds to 850220-22 Requests for Addl Info Re Improvement Committee & Plant Mods Concerning Reduction of Primary Sys Moisture.Historical Background,Review Committee Responsibilities & Description of Helium Issues Encl	Other
ML20135G405	4 September 1985	Xcel Energy Warembourg D	Notifies of Mod to Helium Circulator Auxiliary Sys to Mitigate Pcrv Moisture Ingress.Digital Test Valve Removed from Main Drain Sys & Will Not Be Reinstalled	Other
ML20133E335	20 September 1985	Xcel Energy Warembourg D	Notifies of Change to One of Mods Provided in Re Helium Circulator Auxiliary Sys.Mod Designed to Mitigate Pcrv Moisture Ingress.Thermal Dispersion Type Flow Elements Removed for Evaluation by Manufacturer	Other
ML20141P231	14 March 1986	Office of Nuclear Reactor Regulation Heitner K	Forwards SER Re Util 860312 Plans for Mods to Facility in Order to Reduce Moisture Ingress Into Reactor Vessel.Design Mods Should Reduce Likelihood of Moisture Ingress	Approval
ML20141P237	14 March 1986	NRC	SER Re Util 860312 Plans for Mods to Facility in Order to Reduce Moisture Ingress Into Reactor Vessel.Design Mods Should Reduce Likelihood of Moisture Ingress.Licensee Committed to Conduct Further Studies If Ingress Continues	Other
ML20155G018	2 April 1986	Xcel Energy Walker R	Forwards Info Re Fort St Vrain Improvement Committee & Actions Taken & Under Consideration to Mitigate Moisture Ingress Into Primary Coolant Sys,Per Util 850312 Commitment	Other
ML20216J199	4 February 1987	Scott Moore Martin R INC. LOS ALAMOS NATIONAL LABORATORY Gitterman M ADVANCED SCIENCE & TECHNOLOGY ASSOCIATES	Evaluation of Long-Term Effects of Moisture Ingress in Fort St Vrain Nuclear Reactor	Other
ML20212R258	16 April 1987	Xcel Energy Robert Williams	Provides NRC W/Annual Report of Actions Taken by Util or Under Consideration by Util to Mitigate Moisture Ingress Into Primary Coolant Sys,Per Item Iv.A of Encl to	Other
ML20215J636	16 June 1987	Office of Nuclear Reactor Regulation Heitner K	Forwards Advanced Science & Technology Assocs,Inc Rept Re Moisture Ingress at Facility.Agrees W/Subcontractor,Lasl, Conclusions Re Effects of Moisture Inleakage Occurrences Into Prestressed Concrete Reactor Vessel.W/O Encl	Other
ML20216J192	17 June 1987	Office of Nuclear Reactor Regulation	Safety Evaluation Re Mods to Reduce Moisture Ingress Into Reactor Vessel.Periodic Insps & Preventive Maint Should Be Performed on Pertinent Components.Operational Performance Should Be Continuously Upgraded	Approval
ML20216J184	17 June 1987	Office of Nuclear Reactor Regulation Heitner K	Forwards Safety Evaluation & Rept Re Mods to Reduce Moisture Ingress Into Reactor Vessel.Lasl Recommends Operational Performance Be Upgraded & Reliability of Power Distribution Sys Be Improved to Reduce Frequency of Moisture Ingress	Approval

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