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	Issue date	From	Title	Project stage
ML20080R767	10 February 1984	Southern Nuclear Beckham J	Responds to IE Bulletin 84-01 Re Insp for Cracks in Mark I Containment Torus Vent Header.No Apparent Cracking or Relevant Indications Found on Unit 1.No Addl Cracking Found Beyond Original Cracking on Unit 2	Other
ML20080N566	10 February 1984	FirstEnergy Fiedler P	Forwards Drywell Coating Evaluation, Technical Data Rept, Per SEP Topic VI-1, Organic Matls & Post-Accident Chemistry	Request
ML20087H148	13 March 1984	Southern Nuclear Gucwa L	Forwards GE Repts on Metallographic Exam of Metal Samples Taken from Cracked Vent Header,Per NRC 840206 Meeting W/ Util,Bwr Regulatory Response Group & Ge.Vent Header Cracking Brittle Fracture Caused by Injection of Cold Nitrogen	Meeting
ML20083L655	30 March 1984	Exelon Daltroff S (FORMERLY PHILADELPHIA ELECTRIC	Submits Info on IE Bulletin 84-01, Entitled Cracks in BWR Mark I Containment Vent Headers. Primary Containment Drywell to Torus Bypass Tests Performed.Status of GE SIL 402 Recommended Actions Listed	Other
ML20084L444	31 March 1984	Marisa Herrera GENERAL ELECTRIC CO. Ranganath S Obermiller K	Analysis of Vent Header Cracking at Hatch 2	Other
ML20084R170	5 April 1984	Southern Nuclear Gucwa L	Comments on Status of Recommendations of GE Svc Info Ltr 402 Re Wetwell/Drywell Inerting.Evaluation of Nitrogen Inerting Sys Design Performed & Redundant Low Temp Shutoff Valve Added	Other
ML20083R739	18 April 1984	Exelon Rybak B	Forwards Response to GE SIL 402 Generated Due to Large Crack in Torus Vent Header at Another Operating Plant Attributed to Brittle Fracture Identified During Insp of Cold Nitrogen Into Torus During Inerting	Other
ML20084L425	7 May 1984	Southern Nuclear Gucwa L	Forwards Analysis of Vent Header Cracking at Hatch 2. Analysis Shows That Observed Cracking Can Be Explained by Injection of Cold Nitrogen Into Containment & Any Cracking Expected to Be through-wall,detectable by Visual Insp	Other
ML20091B787	23 May 1984	Southern Nuclear Gucwa L	Provides Status of GE Svc Info Ltr 402 Re Vent Header Cracking Incident.Recommended Ultrasonic Testing Not Planned Due to Lack of Baseline Test Data.Cracking from Injection of Cold Nitrogen Detectable by Surface Exam	Other
NLS8400242, Submits List of Actions Taken on Recommendations from GE 840214 Svc Info Ltr 402, Wetwell/Drywell Inerting. Evaluation of Inerting Sys Design Determined That Failure of Cold Temp Shutdown Switch Cause of Problem	12 September 1984	Nebraska Public Power District Pilant J	Submits List of Actions Taken on Recommendations from GE 840214 Svc Info Ltr 402, Wetwell/Drywell Inerting. Evaluation of Inerting Sys Design Determined That Failure of Cold Temp Shutdown Switch Cause of Problem	Other
FVY-84-110, Forwards Response to NRC Request Re Actions Taken in Response to GE Significant Info Ltr 420 Concerning Hatch-2 Vent Header Crack	14 September 1984	VERMONT YANKEE NUCLEAR POWER CORP. Capstick R	Forwards Response to NRC Request Re Actions Taken in Response to GE Significant Info Ltr 420 Concerning Hatch-2 Vent Header Crack	Other
BECO-84-150, Responds to IE Bulletin 84-01, Cracks in BWR Mark I Containment Vent Headers. Util Endorses GE Svc Info Ltr 402 Recommendations.Equipment Damage Has Not Occurred & Inerting Sys Operation Suitable	14 September 1984	Harrington W Eversource Energy	Responds to IE Bulletin 84-01, Cracks in BWR Mark I Containment Vent Headers. Util Endorses GE Svc Info Ltr 402 Recommendations.Equipment Damage Has Not Occurred & Inerting Sys Operation Suitable	Other
ML20097E003	14 September 1984	Niagara Mohawk Hooten B	Forwards Response to IE Bulletin 84-01 Re Potential for Cracking in BWR Vent Headers Using Nitrogen Inerting Sys. Nitrogen Inerting Sys Not Used at Facility.Recommendations Identified in GE Svc Info Ltr 402 Addressed	Other
ML20098G557	14 September 1984	FirstEnergy Fiedler P	Submits Supplemental Info in Response to IE Bulletin 84-01, Cracks in BWR Mark I Containment Vent Headers. Program Initiated to Address Concerns of GE SIL 402 & Implementation Schedule	Supplement
ML20098A026	17 September 1984	Mangan C Niagara Mohawk	Forwards Responses to Recommendations Contained in IE Bulletin 84-01, Cracks in BWR Mark I Containment Vent Headers & GE Svc Info Ltr 402, Wetwell/Drywell Inerting. No Anomalies Indicated in Drywell/Wetwell Pressures	Other
ML20097H269	17 September 1984	Exelon John Marshall	Forwards Response to GE Significant Info Ltr 402 & IE Info Notice 84-17 Re Nitrogen Inerting Sys	Other
SNRC-1082, Submits Status of Evaluation Re IE Info Notice 84-17, Problems W/Liquid Nitrogen Cooling Components Below Nil Ductility Temp & GE Svc Info Ltr SIL-402, Wetwell/Drywell Inerting	18 September 1984	John Leonard Long Island Lighting Company	Submits Status of Evaluation Re IE Info Notice 84-17, Problems W/Liquid Nitrogen Cooling Components Below Nil Ductility Temp & GE Svc Info Ltr SIL-402, Wetwell/Drywell Inerting	Other
ML20098F159	26 September 1984	Exelon (FORMERLY PHILADELPHIA ELECTRIC Kemper J	Submits Mods Identified for Completion Prior to Liquid Nitrogen Inerting of Containment.Low Temp Switch Will Be Replaced & Relocated to Improve Response Time & Eliminate Adverse Impact of Cold Outdoor Ambient Temps	Other
ML20098F071	27 September 1984	DTE Energy Jens W	Responds to GE Svc Info Ltr 402 Re Wetwell/Drywell Temp. Design & Operation of Nitrogen Sys Provides Adequate Assurance That Impingement of Liquid or Extremely Cold Nitrogen Against Vital Plant Components Will Not Occur	Other
ML20098G674	1 October 1984	Power Authority of the State of New York J. P. Bayne	Responds to IE Bulletin 84-01, Cracks in BWR Mark I Containment Vent Headers. No Evidence of Outside or Inside Vent Header & Nitrogen Penetration Cracking Found.Addl Insps & Evaluations Will Be Performed	Other
ML20098G682	1 October 1984	Carolina Power & Light Co. Zimmerman S	Responds to Verbal Questions Concerning Recommendations of GE Svc Info Ltr 402 Re IE Bulletin 84-01, Cracks in BWR Mark I Containment Vent Headers. Steps Taken to Evaluate & Implement Containment Inerting Recommendations	Other
ML20138A225	29 November 1985	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) Walker R	Summarizes 851108 Mgt Meeting at Region II Ofc Re Util Response to Recommendations of Svc Info Ltr 402 in Handling Unit 1 Nitrogen Inerting & Purge Line Crack Discovered on 841215.Summary of Topics & List of Attendees Encl	Meeting

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