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Category:DEFICIENCY REPORTS (PER 10CFR50.55E & PART 21)
MONTHYEARML20077G6661983-07-27027 July 1983
Part 21 Rept Re Circuit Breakers Mfg Between Nov 1981 & Feb 1982.Breakers Should Be Inspected for Broken Puffer Linkage Studs.Stud Identified as Part Number 192247A.List of Circuit Breakers for Nuclear Plants Encl
ML20069K6811983-04-18018 April 1983
First Interim Deficiency Rept Re Pipe Support Spacing Utilizing Alternate Criteria.Initially Reported on 830317. Investigation Postponed Until Design & Const Resumed
ML20073J8051983-04-12012 April 1983
Third Interim Deficiency Rept Re Nonconservative Calculation Method for General Const Spec G-32 Violations.Initially Reported on 820528.Design Std Being Revised to Clarify Use of Factors of Safety in DS-C6.1
ML20072Q9571983-03-28028 March 1983
First Interim Deficiency Rept Re Failure of Util Div of Engineering Design to Provide Bolt Tightening Requirements to Div of Const.Initially Reported on 830228.Const Deferred. Rept to Be Submitted When Const Decision Made
ML20083P6301983-01-28028 January 1983
Second Revised Final Deficiency Rept Re Welds on Component Cooling Water HX Mfg by Joseph Oat Corp.Initially Reported on 810306.Defects Removed by Grinding.Also Reported Per Part 21
ML20065R3701982-10-14014 October 1982
Interim Deficiency Rept Re Deferral of Const Activities. Initially Reported on 820623.Commitments Made in Rept,Audit Findings & Response to Violations Deferred Until Restart of Design & Const
ML20065H8751982-09-27027 September 1982
First Interim Deficiency Rept Re Failure to Consider Seismic & Inertial Loadings on Ladders,Platforms & Walkways. Initially Reported on 820826.Const Activities Deferred Until Decision Re Const Completion Reached
ML20063J9461982-08-27027 August 1982
Final Deficiency Rept Re Source Insp.Initially Reported 810120.Weld Inspectors Trained & Certified,Shop Surveillance Increased & Personnel Relocated to Provide More Intense Program of Source Insp.Full Compliance Achieved 820514
ML20054K1531982-06-23023 June 1982
Informs That Final Deficiency Repts for Listed Nonconformances Will Not Be Submitted Until Final Decision Is Made Re Const of Projects
ML20054J9211982-06-22022 June 1982
Seventh Interim Deficiency Rept for Deficiencies 2,3,5 & 14 Re QA Audit M80-7,initially Reported 800923.Const Activities Deferred Until Sufficient Info Compiled
ML20054G4161982-06-10010 June 1982
Final Deficiency Rept Re QA Deficiencies at Morgan Engineering,Inc,Initially Reported on 820512.Contract W/Morgan Engineering Canceled Due to Deferred Status of Const
ML20052G5881982-04-27027 April 1982
Sixth Interim Deficiency Rept Re Source Insp,Initially Reported on 810120.Util Continuing Evaluation of Results of Insp of Equipment & Matl Purchased & of Generic Implications.Next Rept Due by 820827
ML20054A8591982-03-30030 March 1982
Fifth Interim Deficiency Rept Re Cooling Tower Makeup Control,Initially Reported on 810423.Const Activities Being Deferred to Minimize Expenditures & Effort,Pending Decision on Project Cancellation
ML20050B0221982-03-19019 March 1982
Final Deficiency Rept 2 Re Failure of Transamerica Delaval to Correct Violations Identified During Audits 79V-38 & 80V-39 Promptly,Due to Improper QA Program Implementation, Initially Reported on 820114.Also Reported Per Part 21
ML20042A3131982-03-0909 March 1982
Final Deficiency Rept Re Const QA Program Procedural Control Deficiencies,Initially Reported 810731.Const Engineering Procedures Prepared & Revised for Configuration Control of drawings,site-originated Drawings & Field Change Requests
ML20049J4391982-03-0303 March 1982
First Interim Deficiency Rept Re Check Valve Leak in Air Start Sys of Standing Diesel Generators,Initially Reported on 820209.Problem Under Investigation by Vendor.Next Rept Expected by 820528.Also Reported Per Part 21
ML20049J4991982-03-0101 March 1982
Final Deficiency Rept Re Fillet Weld Misspec,Initially Reported 801210.General Const Spec G-29C Revised to Clarify Const Requirements for Skewed T-joints.Info Emphasizing Aisc/Aws Requirements Will Be Issued by 820401
ML20069C1361982-02-22022 February 1982
Sixth Interim Deficiency Rept Re QA Audit M80-7 Deficiencies 2,3,5 & 14,initially Reported 800923. Deficiencies Still Being Reviewed.Next Rept to Be Submitted by 820624
ML20071H9341982-02-18018 February 1982
Fifth Interim Deficiency Rept Re Defective Welds Discovered During Visual Insps Between June & Dec 1980,initially Reported on 810120.Generic Implications of Source Insp Breakdown Will Be Evaluated.Next Rept Expected by 820427
ML20041A4241982-02-10010 February 1982
Deficiency Rept Re Failure of Transamerica Delaval to Promptly Correct Deficiencies,Initially Reported 820114. Deficiency Sheet Discussed W/Delaval Mgt.Next Rept by 820320.Also Reported Per Part 21
ML20041A6241982-02-0505 February 1982
First Interim Deficiency Rept Re Unevaluated Missile Source,Initially Reported on 820108.Probability of Fly Wheel Failure Under Investigation.Deficiency Will Be Reviewed for Possible Generic Applications
ML20069B8731982-01-22022 January 1982
Third Interim Rept Re Tornado Depressurization Design Deficiencies,Initially Reported 810402.Ventilation Opening Added in Exterior Door of Each Stairwell.Stairwell Doors to Main Bldg Will Be Pressure Doors.Next Rept by 821020
ML20039E1471981-12-29029 December 1981
First Supplemental Rept Re Deficient Welds on Component Cooling Water Heat Exchangers,Initially Reported 810306. Further Insp Determined Defects Advanced Beyond Superficial. NRC to Be Informed of Actions.Also Reported Per Part 21
ML20069B2891981-12-16016 December 1981
Third Interim Deficiency Rept Re QA Compliance W/Ansi N45.2.11,initially Reported 810731.Evaluation of Deficiency & Possible Corrective Action Continuing.Next Rept by 820310
ML20062N3041981-12-0808 December 1981
Fourth Interim Deficiency Rept Re Cooling Tower Makeup Control,Initially Reported 810423.Analysis of safety-related Requirements Imposed by Design Criteria Ongoing.Next Rept by 820318
ML20038C7381981-12-0707 December 1981
Fourth Interim Deficiency Rept Re Weld Defects Undiscovered by Source Insp,Initially Reported 810120.Schedule of Source Welding Insps Is Complete.Util Is Reviewing & Evaluating Insps.Next Rept Will Be Submitted by 820204
ML20038C9151981-12-0404 December 1981
Fourth Interim Deficiency Rept Re Fillet Weld Misspec, Initially Reported on 801210.Engineers & Designers Have Been Alerted to Aisc/Aws Requirements for Limiting Angles for Skewed Tee Joints.Next Rept Due 820302
ML20011A9881981-10-23023 October 1981
Final Deficiency Rept Re Engineer Failure to Verify Preliminary Seismic Analyses Prior to Final Design Completion Initially Reported 810212.Final Evaluations Reveal That No Design Changes Are Required
ML20011A6341981-10-0707 October 1981
Second Interim Deficiency Rept Re QA Program Compliance W/ ANSI N45.2.11,initially Reported on 810731.Evaluation of Deficiency & Corrective Actions Ongoing.Next Rept Expected by 811223
ML20010G9131981-09-0909 September 1981
Second Interim Deficiency Rept Re Tornado Depressurization Design,Initially Reported on 810402.Ventilation Analysis for Essential Raw Cooling Water Pumping Station Complete.Final Documentation in Progress.Next Rept Expected 820127
ML20010G8191981-09-0909 September 1981
Final Deficiency Rept Re Unconservative Mass Load Ratings for Cantilever Supports Supplied by Bechtel,Initially Reported 810810.Also Reported Per Part 21.Bechtel Has Modified Computer Code Input & Sent Corrected Data to Util
ML20010G2081981-09-0404 September 1981
Third Interim Deficiency Rept Re Weld Defects Discovered During Source Insp,Initially Reported on 810120.Util Scheduling Special Team of Quality Engineering Branch Employees to Survey Each Site.Next Rept by 811208
ML20010E9101981-08-31031 August 1981
First Interim Deficiency Rept Re QA Program Failure to Comply W/Ansi N45.2.11,initially Reported on 810731.Caused by Lack of Control Over Drawing Procedures.Next Rept to Be Submitted by 811015
ML20010D1871981-08-17017 August 1981
Revised Final Deficiency Rept Re Lamination of Soil in Emergency Raw Cooling Water Spray Pond,Initially Reported on 810204.Evaluation Conducted to Determine Effect of Laminations.Table Encl
ML20010C4561981-08-12012 August 1981
Third Interim Deficiency Rept Re Fillet Weld Misspec Initially Reported 801210.Util Is Reviewing All TVA & Vendor Designs Governed by AISC Spec & Aws Structural Welding Code. Structural Integrity of Joints Not Impaired by Misspec
ML20010C7031981-08-11011 August 1981
Final Deficiency Rept Re Lamination of Soil in Essential Raw Cooling Water Spray Pond,Initially Reported on 810204.No Significant Lamination to Cause Adverse Impact on Seepage or Structural Integrity of Liner
ML20009H4311981-07-31031 July 1981
Final Deficiency Rept Re Failure to Implement Design Criteria,Initially Reported on 810401.C-E & Util Developed Recommended Design to Alleviate Deficiency in Design of Spent Fuel Rack Embedments
ML20009G6561981-07-27027 July 1981
Final Deficiency Rept Re Rebar Left Out of Concrete Pour, Originally Reported on 810629.Caused by Craft,Engineer & QC-civil Field Inspector Error.Top Face Bars of Pour W-H6 Spliced W/Grouted Splice Bars.Checklist Procedure Improved
ML20009G1261981-07-24024 July 1981
Second Revised Final Deficiency Rept Re Welds on Gas Stripper Module,Initially Reported 801008.Norwalk Fabricators Will Remove Nonconforming Piping.Work Will Be Completed by 820301.Part 21 Applicable to Deficiency
ML20009F4761981-07-17017 July 1981
Second Interim Deficiency Rept,Initially Reported on 810212, Re Unverified Seismic Analysis for Final Design.Final Seismic Structural Analysis Has Been Checked & Verified.Next Rept Will Be Submitted by 811028
ML20009F5781981-07-0808 July 1981
Second Interim Deficiency Rept Re Cooling Tower Makeup Control,Initially Reported 810423.No Addl Info to Rept at Present.Next Rept Will Be Submitted by 810819
ML20005A4101981-06-23023 June 1981
Second Interim Deficiency Rept Re Source Insp,Initially Reported on 810120.Generic Implications Re Breakdown in Quality Sys at Source Insp Level Are Being Studied.Next Rept Will Be Submitted by 810904
ML19352A9801981-05-28028 May 1981
Revised Final Deficiency Rept,Originaly Reported on 800321, Re Improper Documentation & Utilization of Computer Program Inertia.Inertia & Bigdyna Properly Utilized & Only Seismic Analysis for Control Bldg Affected
ML20004C0811981-05-26026 May 1981
First Interim Deficiency Rept Re Cooling Tower Makeup Control,Initially Submitted 810423.Analysis of safety-related Requirements Imposed by Design Criteria Is in Progress
ML19350D8031981-05-14014 May 1981
Final Deficiency Rept,Initially Reported 810414,re Nonconforming Concrete,Rebar & Bolt Coupler Placement in Fuel Bldg.Caused by Personnel Error & Misinterpreting Drawings.Slab Will Be Repoured by 810529
ML20008F9841981-05-0404 May 1981
First Interim Deficiency Rept,Initially Reported 810402,re Tornado Depressurization Design Deficiencies.Ventilation Analysis for Intake & Essential Raw Cooling Water Pumping Stations Performed.Next Rept Will Be Submitted by 810909
ML20008F8531981-05-0101 May 1981
Part 21 Rept Re C-E Failure to Implement Design Criteria for Seal Welding to Anchor Bolt,Initially Reported 810401. Channel Will Be Machined Between Bolt Locations & Liner Seal Weld.Next Rept by 810804
ML20003G4941981-04-23023 April 1981
Final Rept Re Error in Tpipe Program,Initially Reported on 810327.Corrected Version of Tpipe Program Verified & Put Into Production.Poll Showed No Incorrect Design Info Issued from Using Error
ML20009F5591981-04-22022 April 1981
Revised Final Deficiency Rept Re Welds on Gas Stripper Module,Initially Reported 801008.Piping Which Failed to Meet ASME Code Requirements Will Be Returned to Supplier for Repairs.Deficiency Also Reported Per Part 21
ML20009F6331981-04-21021 April 1981
Final Deficiency Rept Re Fl Steel Corp Undersized Fillet Welds W/Craters,Excessive Undercut,Lack of Fusion & Porosity Initially Reported 801121.Welds Repaired by Fl Steel Following Insp
1983-07-27
[Table view]
Category:TEXT-SAFETY REPORT
MONTHYEARML20153E5011988-08-29029 August 1988
NRC Staff Evaluation of Site Stabilization Plan for Withdrawal of CPPR-172 & CPPR-173
ML20077G6661983-07-27027 July 1983
Part 21 Rept Re Circuit Breakers Mfg Between Nov 1981 & Feb 1982.Breakers Should Be Inspected for Broken Puffer Linkage Studs.Stud Identified as Part Number 192247A.List of Circuit Breakers for Nuclear Plants Encl
ML20069K6811983-04-18018 April 1983
First Interim Deficiency Rept Re Pipe Support Spacing Utilizing Alternate Criteria.Initially Reported on 830317. Investigation Postponed Until Design & Const Resumed
ML20073J8051983-04-12012 April 1983
Third Interim Deficiency Rept Re Nonconservative Calculation Method for General Const Spec G-32 Violations.Initially Reported on 820528.Design Std Being Revised to Clarify Use of Factors of Safety in DS-C6.1
ML20072Q9571983-03-28028 March 1983
First Interim Deficiency Rept Re Failure of Util Div of Engineering Design to Provide Bolt Tightening Requirements to Div of Const.Initially Reported on 830228.Const Deferred. Rept to Be Submitted When Const Decision Made
ML20083P6301983-01-28028 January 1983
Second Revised Final Deficiency Rept Re Welds on Component Cooling Water HX Mfg by Joseph Oat Corp.Initially Reported on 810306.Defects Removed by Grinding.Also Reported Per Part 21
ML20065R3701982-10-14014 October 1982
Interim Deficiency Rept Re Deferral of Const Activities. Initially Reported on 820623.Commitments Made in Rept,Audit Findings & Response to Violations Deferred Until Restart of Design & Const
ML20065H8751982-09-27027 September 1982
First Interim Deficiency Rept Re Failure to Consider Seismic & Inertial Loadings on Ladders,Platforms & Walkways. Initially Reported on 820826.Const Activities Deferred Until Decision Re Const Completion Reached
ML20063J9461982-08-27027 August 1982
Final Deficiency Rept Re Source Insp.Initially Reported 810120.Weld Inspectors Trained & Certified,Shop Surveillance Increased & Personnel Relocated to Provide More Intense Program of Source Insp.Full Compliance Achieved 820514
ML20054K1531982-06-23023 June 1982
Informs That Final Deficiency Repts for Listed Nonconformances Will Not Be Submitted Until Final Decision Is Made Re Const of Projects
ML20054J9211982-06-22022 June 1982
Seventh Interim Deficiency Rept for Deficiencies 2,3,5 & 14 Re QA Audit M80-7,initially Reported 800923.Const Activities Deferred Until Sufficient Info Compiled
ML20054G4161982-06-10010 June 1982
Final Deficiency Rept Re QA Deficiencies at Morgan Engineering,Inc,Initially Reported on 820512.Contract W/Morgan Engineering Canceled Due to Deferred Status of Const
ML20052G5881982-04-27027 April 1982
Sixth Interim Deficiency Rept Re Source Insp,Initially Reported on 810120.Util Continuing Evaluation of Results of Insp of Equipment & Matl Purchased & of Generic Implications.Next Rept Due by 820827
ML20054A8591982-03-30030 March 1982
Fifth Interim Deficiency Rept Re Cooling Tower Makeup Control,Initially Reported on 810423.Const Activities Being Deferred to Minimize Expenditures & Effort,Pending Decision on Project Cancellation
ML20050B0221982-03-19019 March 1982
Final Deficiency Rept 2 Re Failure of Transamerica Delaval to Correct Violations Identified During Audits 79V-38 & 80V-39 Promptly,Due to Improper QA Program Implementation, Initially Reported on 820114.Also Reported Per Part 21
ML20042A3131982-03-0909 March 1982
Final Deficiency Rept Re Const QA Program Procedural Control Deficiencies,Initially Reported 810731.Const Engineering Procedures Prepared & Revised for Configuration Control of drawings,site-originated Drawings & Field Change Requests
ML20049J4391982-03-0303 March 1982
First Interim Deficiency Rept Re Check Valve Leak in Air Start Sys of Standing Diesel Generators,Initially Reported on 820209.Problem Under Investigation by Vendor.Next Rept Expected by 820528.Also Reported Per Part 21
ML20049J4991982-03-0101 March 1982
Final Deficiency Rept Re Fillet Weld Misspec,Initially Reported 801210.General Const Spec G-29C Revised to Clarify Const Requirements for Skewed T-joints.Info Emphasizing Aisc/Aws Requirements Will Be Issued by 820401
ML20069C1361982-02-22022 February 1982
Sixth Interim Deficiency Rept Re QA Audit M80-7 Deficiencies 2,3,5 & 14,initially Reported 800923. Deficiencies Still Being Reviewed.Next Rept to Be Submitted by 820624
ML20071H9341982-02-18018 February 1982
Fifth Interim Deficiency Rept Re Defective Welds Discovered During Visual Insps Between June & Dec 1980,initially Reported on 810120.Generic Implications of Source Insp Breakdown Will Be Evaluated.Next Rept Expected by 820427
ML20041A4241982-02-10010 February 1982
Deficiency Rept Re Failure of Transamerica Delaval to Promptly Correct Deficiencies,Initially Reported 820114. Deficiency Sheet Discussed W/Delaval Mgt.Next Rept by 820320.Also Reported Per Part 21
ML20041A6241982-02-0505 February 1982
First Interim Deficiency Rept Re Unevaluated Missile Source,Initially Reported on 820108.Probability of Fly Wheel Failure Under Investigation.Deficiency Will Be Reviewed for Possible Generic Applications
ML20069B8731982-01-22022 January 1982
Third Interim Rept Re Tornado Depressurization Design Deficiencies,Initially Reported 810402.Ventilation Opening Added in Exterior Door of Each Stairwell.Stairwell Doors to Main Bldg Will Be Pressure Doors.Next Rept by 821020
ML20039B5681981-12-30030 December 1981
Yellow Creek Nuclear Plant Socioeconomic Monitoring & Mitigation Rept.
ML20039E1471981-12-29029 December 1981
First Supplemental Rept Re Deficient Welds on Component Cooling Water Heat Exchangers,Initially Reported 810306. Further Insp Determined Defects Advanced Beyond Superficial. NRC to Be Informed of Actions.Also Reported Per Part 21
ML20069B2891981-12-16016 December 1981
Third Interim Deficiency Rept Re QA Compliance W/Ansi N45.2.11,initially Reported 810731.Evaluation of Deficiency & Possible Corrective Action Continuing.Next Rept by 820310
ML20062N3041981-12-0808 December 1981
Fourth Interim Deficiency Rept Re Cooling Tower Makeup Control,Initially Reported 810423.Analysis of safety-related Requirements Imposed by Design Criteria Ongoing.Next Rept by 820318
ML20038C7381981-12-0707 December 1981
Fourth Interim Deficiency Rept Re Weld Defects Undiscovered by Source Insp,Initially Reported 810120.Schedule of Source Welding Insps Is Complete.Util Is Reviewing & Evaluating Insps.Next Rept Will Be Submitted by 820204
ML20038C9151981-12-0404 December 1981
Fourth Interim Deficiency Rept Re Fillet Weld Misspec, Initially Reported on 801210.Engineers & Designers Have Been Alerted to Aisc/Aws Requirements for Limiting Angles for Skewed Tee Joints.Next Rept Due 820302
ML20011A9881981-10-23023 October 1981
Final Deficiency Rept Re Engineer Failure to Verify Preliminary Seismic Analyses Prior to Final Design Completion Initially Reported 810212.Final Evaluations Reveal That No Design Changes Are Required
ML20011A6341981-10-0707 October 1981
Second Interim Deficiency Rept Re QA Program Compliance W/ ANSI N45.2.11,initially Reported on 810731.Evaluation of Deficiency & Corrective Actions Ongoing.Next Rept Expected by 811223
ML20010G9131981-09-0909 September 1981
Second Interim Deficiency Rept Re Tornado Depressurization Design,Initially Reported on 810402.Ventilation Analysis for Essential Raw Cooling Water Pumping Station Complete.Final Documentation in Progress.Next Rept Expected 820127
ML20010G8191981-09-0909 September 1981
Final Deficiency Rept Re Unconservative Mass Load Ratings for Cantilever Supports Supplied by Bechtel,Initially Reported 810810.Also Reported Per Part 21.Bechtel Has Modified Computer Code Input & Sent Corrected Data to Util
ML20010G2081981-09-0404 September 1981
Third Interim Deficiency Rept Re Weld Defects Discovered During Source Insp,Initially Reported on 810120.Util Scheduling Special Team of Quality Engineering Branch Employees to Survey Each Site.Next Rept by 811208
ML20010E9101981-08-31031 August 1981
First Interim Deficiency Rept Re QA Program Failure to Comply W/Ansi N45.2.11,initially Reported on 810731.Caused by Lack of Control Over Drawing Procedures.Next Rept to Be Submitted by 811015
ML20010D1871981-08-17017 August 1981
Revised Final Deficiency Rept Re Lamination of Soil in Emergency Raw Cooling Water Spray Pond,Initially Reported on 810204.Evaluation Conducted to Determine Effect of Laminations.Table Encl
ML20010C4561981-08-12012 August 1981
Third Interim Deficiency Rept Re Fillet Weld Misspec Initially Reported 801210.Util Is Reviewing All TVA & Vendor Designs Governed by AISC Spec & Aws Structural Welding Code. Structural Integrity of Joints Not Impaired by Misspec
ML20010C7031981-08-11011 August 1981
Final Deficiency Rept Re Lamination of Soil in Essential Raw Cooling Water Spray Pond,Initially Reported on 810204.No Significant Lamination to Cause Adverse Impact on Seepage or Structural Integrity of Liner
ML20009H4311981-07-31031 July 1981
Final Deficiency Rept Re Failure to Implement Design Criteria,Initially Reported on 810401.C-E & Util Developed Recommended Design to Alleviate Deficiency in Design of Spent Fuel Rack Embedments
ML20009G6561981-07-27027 July 1981
Final Deficiency Rept Re Rebar Left Out of Concrete Pour, Originally Reported on 810629.Caused by Craft,Engineer & QC-civil Field Inspector Error.Top Face Bars of Pour W-H6 Spliced W/Grouted Splice Bars.Checklist Procedure Improved
ML20009G1261981-07-24024 July 1981
Second Revised Final Deficiency Rept Re Welds on Gas Stripper Module,Initially Reported 801008.Norwalk Fabricators Will Remove Nonconforming Piping.Work Will Be Completed by 820301.Part 21 Applicable to Deficiency
ML20009F4761981-07-17017 July 1981
Second Interim Deficiency Rept,Initially Reported on 810212, Re Unverified Seismic Analysis for Final Design.Final Seismic Structural Analysis Has Been Checked & Verified.Next Rept Will Be Submitted by 811028
ML20009F5781981-07-0808 July 1981
Second Interim Deficiency Rept Re Cooling Tower Makeup Control,Initially Reported 810423.No Addl Info to Rept at Present.Next Rept Will Be Submitted by 810819
ML20005A4101981-06-23023 June 1981
Second Interim Deficiency Rept Re Source Insp,Initially Reported on 810120.Generic Implications Re Breakdown in Quality Sys at Source Insp Level Are Being Studied.Next Rept Will Be Submitted by 810904
ML19352A9801981-05-28028 May 1981
Revised Final Deficiency Rept,Originaly Reported on 800321, Re Improper Documentation & Utilization of Computer Program Inertia.Inertia & Bigdyna Properly Utilized & Only Seismic Analysis for Control Bldg Affected
ML20004C0811981-05-26026 May 1981
First Interim Deficiency Rept Re Cooling Tower Makeup Control,Initially Submitted 810423.Analysis of safety-related Requirements Imposed by Design Criteria Is in Progress
ML19350D8031981-05-14014 May 1981
Final Deficiency Rept,Initially Reported 810414,re Nonconforming Concrete,Rebar & Bolt Coupler Placement in Fuel Bldg.Caused by Personnel Error & Misinterpreting Drawings.Slab Will Be Repoured by 810529
ML20008F9841981-05-0404 May 1981
First Interim Deficiency Rept,Initially Reported 810402,re Tornado Depressurization Design Deficiencies.Ventilation Analysis for Intake & Essential Raw Cooling Water Pumping Stations Performed.Next Rept Will Be Submitted by 810909
ML20008F8531981-05-0101 May 1981
Part 21 Rept Re C-E Failure to Implement Design Criteria for Seal Welding to Anchor Bolt,Initially Reported 810401. Channel Will Be Machined Between Bolt Locations & Liner Seal Weld.Next Rept by 810804
ML20003G4941981-04-23023 April 1981
Final Rept Re Error in Tpipe Program,Initially Reported on 810327.Corrected Version of Tpipe Program Verified & Put Into Production.Poll Showed No Incorrect Design Info Issued from Using Error
1988-08-29
[Table view] |
Text
-
v 3 * . . ,
.* TENNESSEE VALLEY AUTHCRITY' ~ - UFi
CH ATTANCOGA. TENNESSEE 37401 400 Chestnut Street Tower II / ,]!!!
l
~ i July 27, 1981 (( .* ;v ',. -
YCRD-50-566/81-16 YCRD-50-567/81-13 Mr. James P. O'Reilly, Director J ? l 9 I Office of Inspection and Enforcement [g fg(L b q U.S. Nuclear Regulatory Comission ~
1 Region II - Suite 3100
- J" (i 0 3 I90I l u.5 TflisYm,wo i 101 Marietta Street ..f Atlanta, Georgia 30303 /
Dear Mr. O'Reilly:
dTTru \ ,
1 YELLOW CREEK NUCLEAR PLANT UNITS 1 AND 2 - REBAR LEFT OUT OF CONCRETE FOUR
- YCRD-50-566/81-16, YCRD-50-567/81 FINAL REPORT The subject deficiency was initially reported to NRC-OIE Irapector ;
R. V. Celenjak on June 29, 1981 in accordance with 10 CFR 50.55(e) as NCR YC-197. Enclosed is our final report. l If you have any questions concerning this matter, please get in touch with D. L. Lambert at FTS 857-2581.
Very truly yours, TENNESSEE VALLEY AUTHORITY
- )1 LT M. Mills, Mhnager Nuclear Regulation and Safety Enclosure cc: Mr. Victor Stello, Jr., Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555
-g6>7 i
5 .
, YI 810804050 010727 PDR ADOCK 05000566 6 PDR
' ^"' N m et e
+
5 CICLOSURE YELLOW CREEK NUCLEAR PLANT UNITS 1 AND 2 REBAR LEFT OUT OF CONCRETE POUR YCRD-50-566/81-16, YCRD-50-567/81-13 10 CFR 50.5S(e)
FINAL REPORT
~^
Description of' Deficiency Concrete pour No. W-H6 was split into two pours W-H6 (east) and W-H6 (west) so that those portions that were not on " hold" by TVA could be poured.
W-H6 (west) was to be poured while the " hold" only affected the W-H6 (east) part of the pour. The preliminary work needed before pouring was completed i on concrete pour W-H6 (west) and concrete was placed. Subsequently it was I
discovered that the top face rebars (23) of pour W-H6 (east) were supposed l
to have extended into pour W-H6 (west) 21 inches.
! The apparent cause is that the craft, engineers, and Quality Control-Civil field inspectors failed to notice that the top face rebars of pour W-H6 (east) extended into W-H6 (west) 21 inches. "he Quality Control-Civil inspectors who made the inspection takeoff checklist for W-H6 (west) had noticed them and included them on the checklist. However, they were subsequently missed by the field inspector who signed off the W-H6 (west) l pour as being' acceptable. '
i Safety Implications Concrete pour No. W-H6 is part of a floor in the Waste Management Building. Had this subject deficiency gone uncorrected, there is a possibility that the floor might crack or be otherwise damaged. Because l
the volume reduction equipment is located in the area of the pour, damage l to the floor could result in damage to the equipment, and a possible release of radioactive waste.
Corrective Action Quality Control Investigation Report (QCIR) No. 36076 and nonconformance report (NCR) No. YC-197 were written to document this problem. The NCR was evaluated by TVA and the disposition was to drill 19 holes into the W-H6 (west) pour to a depth of 24 inches and grout rebar splices in accordance with TVA Construction Specification G-32. The top face bars of pour W-H6 (east) were subsequently spliced with the grouted splice bars. To prevent a recurrence Project Engineering-Civil will monitor the installation of l
rebre for double assurance that all rebar is installed in accordance with I drawings. Quality Control-Civil will continue to perform quality control i inspections, using an independently verified checklist, and will be held l responsible for verification that rebar has been installed in accordance j with drawings and specifications. Quality Control-Civil inspectors were l instructed en June 15, 1981 by the Materials and Civil Quality Control Unit l supervisor that:
1 (1) Takeoff checklist reviewers should always consult with the original l preparer of the checklist if a discrepancy is discovered.
l (2) Inspections should be initiated on the takeoff checklist on the day I that they are made in order not to overlook any item.
The corrective action was completed on July 5, 1981. .
. - -. . . - . - - _ - . - . - - - - - - . - - - . - . . - . - _ , , - - - - - . - . . . - - . . . - - - . - , .
