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Category:ANNUAL OPERATING REPORT
MONTHYEARCY-99-027, Annual Rept for 10CFR50.59, for Jan-Dec 1998.With1998-12-31031 December 1998 Annual Rept for 10CFR50.59, for Jan-Dec 1998.With CY-98-010, Annual Rept for 10CFR50.59,Jan-Dec,19971997-12-31031 December 1997 Annual Rept for 10CFR50.59,Jan-Dec,1997 B16240, Annual Repts for 10CFR50.59 PORV & SV Challenges Primary Coolant Specific Activity Analysis Occupational Radiation Exposure for 19961996-12-31031 December 1996 Annual Repts for 10CFR50.59 PORV & SV Challenges Primary Coolant Specific Activity Analysis Occupational Radiation Exposure for 1996 ML18094B3211990-02-28028 February 1990 Annual Operating Repts for 1989 for Salem & Hope Creek Generating Stations B13145, & Millstone Station Units 1,2 & 3,Annual Rept for 19881988-12-31031 December 1988 & Millstone Station Units 1,2 & 3,Annual Rept for 1988 B12822, Annual Rept for 19871987-12-31031 December 1987 Annual Rept for 1987 ML20154S6331985-12-31031 December 1985 Units 1 & 2 Annual Rept,1985 ML20199F2241985-12-31031 December 1985 Suppl to 1985 Annual Rept ML20199F2111985-12-31031 December 1985 Suppl to 1985 Annual Rept ML20138C5521985-12-31031 December 1985 1985 Annual Rept L-84-224, Rept of Changes,Tests & Experiments Made W/O Prior Commission Approval,Jul 1983 - June 19841984-06-30030 June 1984 Rept of Changes,Tests & Experiments Made W/O Prior Commission Approval,Jul 1983 - June 1984 L-83-479, Annual Rept on Changes,Tests & Experiments Made W/O Prior Commission Approval from Jul 1982 - June 19831983-06-30030 June 1983 Annual Rept on Changes,Tests & Experiments Made W/O Prior Commission Approval from Jul 1982 - June 1983 1998-12-31
[Table view] Category:TEXT-SAFETY REPORT
MONTHYEARML20217K3301999-10-19019 October 1999 Safety Evaluation Supporting Amend 195 to License DPR-61 ML20206C8761999-04-28028 April 1999 Safety Evaluation Supporting Amend 194 to License DPR-61 CY-99-047, Ro:On 981217,identified Unsuccessful Dewatering of Cnsi HIC, Model PL8-120R,containing Resins.Caused by Apparent Failure of Dewatering Tree.Other HICs Have Been Procured,Recertified & Returned to Plant for Use1999-03-23023 March 1999 Ro:On 981217,identified Unsuccessful Dewatering of Cnsi HIC, Model PL8-120R,containing Resins.Caused by Apparent Failure of Dewatering Tree.Other HICs Have Been Procured,Recertified & Returned to Plant for Use CY-99-027, Annual Rept for 10CFR50.59, for Jan-Dec 1998.With1998-12-31031 December 1998 Annual Rept for 10CFR50.59, for Jan-Dec 1998.With ML20206F1971998-12-31031 December 1998 Annual Rept for 1998 for Cyap. with ML20198G9101998-12-22022 December 1998 Proposed Rev 2 of Cyap QAP for Haddam Neck Plant. Marked Up Rev 1 Included ML20238F2131998-08-28028 August 1998 SER Accepting Defueled Emergency Plan for Emergency Planning for Connecticut Yankee Atomic Power Co CY-98-136, Ro:On 980727,flow Blockage Occurred & Caused Pressure in Sys to Increase,Resulting in Relief Valve Lifting & Pipe Vibration,Which Caused Leaks to Develop.Caused by Nearly Closed post-filter Inlet Valve.Repaired 2 Leaks in Line1998-08-12012 August 1998 Ro:On 980727,flow Blockage Occurred & Caused Pressure in Sys to Increase,Resulting in Relief Valve Lifting & Pipe Vibration,Which Caused Leaks to Develop.Caused by Nearly Closed post-filter Inlet Valve.Repaired 2 Leaks in Line ML20237B7461998-07-22022 July 1998 1998 Defueled Emergency Plan Exercise Scenario Manual, Conducted on 980722 ML20202D1621998-06-30030 June 1998 Safety Evaluation Supporting Amend 193 to License DPR-61 CY-98-068, Follow-up to Verbal Notification on 980413 of Film on Discharge Canal.Investigation Continuing.Samples Collected for Petroleum Analyses & Biological Characterization at Intake Structure & Discharge Canal.Replaced Sorbent Booms1998-04-15015 April 1998 Follow-up to Verbal Notification on 980413 of Film on Discharge Canal.Investigation Continuing.Samples Collected for Petroleum Analyses & Biological Characterization at Intake Structure & Discharge Canal.Replaced Sorbent Booms CY-98-045, Ro:On 980212,0219,0225 & 0312,separate Sheens of Approx One Cup of oil-like Substance Was Observed at Discharge Canal. Cause Has Not Been Clearly Identified.Called in Vendor Spill to Install Sorbent Booms to Absorb Sheen.W/One Drawing1998-04-13013 April 1998 Ro:On 980212,0219,0225 & 0312,separate Sheens of Approx One Cup of oil-like Substance Was Observed at Discharge Canal. Cause Has Not Been Clearly Identified.Called in Vendor Spill to Install Sorbent Booms to Absorb Sheen.W/One Drawing ML20217A0001998-03-31031 March 1998 Monthly Operating Rept for Mar 1998 for Haddam Neck Plant ML20217F0611998-03-31031 March 1998 Historical Review Team Rept ML20217K2101998-03-27027 March 1998 Safety Evaluation Supporting Amend 192 to License DPR-61 CY-98-046, Follow-up to 980311 Verbal Notification of Film on Discharge Canal.Cause Not Yet Determined.Film Is Contained & Will Be Absorbed by Containment & Sorbent Booms That Were in Place in Discharge Canal1998-03-12012 March 1998 Follow-up to 980311 Verbal Notification of Film on Discharge Canal.Cause Not Yet Determined.Film Is Contained & Will Be Absorbed by Containment & Sorbent Booms That Were in Place in Discharge Canal ML20216D6531998-02-28028 February 1998 Monthly Operating Rept for Feb 1998 for Haddam Neck Plant ML20217D7381998-02-28028 February 1998 Revised MOR for Feb 1998 Haddam Neck Plant CY-98-012, Monthly Operating Rept for Jan 1998 for Connecticut Yankee Haddam Neck Plant1998-01-31031 January 1998 Monthly Operating Rept for Jan 1998 for Connecticut Yankee Haddam Neck Plant ML20217P4861997-12-31031 December 1997 1997 Annual Financial Rept, for Cyap CY-98-010, Annual Rept for 10CFR50.59,Jan-Dec,19971997-12-31031 December 1997 Annual Rept for 10CFR50.59,Jan-Dec,1997 ML20198N6681997-12-31031 December 1997 Monthly Operating Rept for Dec 1997 for Haddam Neck Plant ML20199L5891997-12-24024 December 1997 Independent Analysis & Evaluation of AM-241 & Transuranics & Subsequent Dose to Two Male Workers at Connecticut Yankee Atomic Power Plant ML20203K4271997-11-30030 November 1997 Monthly Operating Rept for Nov 1997 for Haddam Neck Plant ML20199B1141997-10-31031 October 1997 Monthly Operating Rept for Oct 1997 for Haddam Neck Plant ML20198M8101997-10-14014 October 1997 SER Accepting Proposed Revs to Util Quality Assurance Program at Facility ML20198J8811997-09-30030 September 1997 Monthly Operating Rept for Sept 1997 for Haddam Neck Plant ML20217Q3171997-08-31031 August 1997 Addl Changes to Proposed Rev 1 to QA Program ML20210P8721997-08-31031 August 1997 Post Decommissioning Activities Rept, for Aug 1997 ML20210U9301997-08-31031 August 1997 Monthly Operating Rept for Aug 1997 for Haddam Neck Plant CY-97-082, Special Rept:On 970708,routine Surveillance Testing of Seismic Monitoring Sys Instrumentation Revealed,Data Was Not Being Reproduced by Portion of Playback Sys.Station Presently Pursuing Replacement of Seismic Monitoring Sys1997-08-14014 August 1997 Special Rept:On 970708,routine Surveillance Testing of Seismic Monitoring Sys Instrumentation Revealed,Data Was Not Being Reproduced by Portion of Playback Sys.Station Presently Pursuing Replacement of Seismic Monitoring Sys ML20210L0521997-07-31031 July 1997 Monthly Operating Rept for July 1997 for HNP ML20149E4451997-06-30030 June 1997 Monthly Operating Rept for June 1997 for Haddam Neck Plant ML20140H5241997-05-31031 May 1997 Monthly Operating Rept for May 1997 for Haddam Neck Plant ML20141A0041997-05-31031 May 1997 Independent Assessment of Radiological Controls Program at Cyap Haddam Neck Plant Final Rept May 1997 ML20141K4201997-05-22022 May 1997 Safety Evaluation Supporting Amend 191 to License DPR-61 ML20141D4141997-04-30030 April 1997 Monthly Operating Rept for Apr 1997 for Connecticut Yankee Haddam Neck ML20138G5901997-04-25025 April 1997 Proposed Rev 1 to Cyap QA Program for Haddam Neck Plant ML20137H3031997-03-31031 March 1997 Rev 2 to Nuclear Training Loit/Lout Audit Reviews ML20137W8051997-03-31031 March 1997 Monthly Operating Rept for Mar 1997 for Haddam Neck Plant ML20137C6281997-03-14014 March 1997 Redacted Version of Rev 1 to Nuclear Training Loit/Lout Audit Reviews ML20137A0801997-02-28028 February 1997 Monthly Operating Rept for Feb 1997 for Haddam Neck Plant ML20135C5101997-02-26026 February 1997 1996 Refuel Outage ISI Summary Rept for CT Yankee Atomic Power Co B16268, Special Rept:On 970205,declared Main Stack-Wide Range Noble Gas Monitor Inoperable.Caused by Inadequate Calibr Methods. Will Revise Calibr Procedure to Technique to Demonstrate Accuracy & Linearity Over Intended Range of Monitor1997-02-19019 February 1997 Special Rept:On 970205,declared Main Stack-Wide Range Noble Gas Monitor Inoperable.Caused by Inadequate Calibr Methods. Will Revise Calibr Procedure to Technique to Demonstrate Accuracy & Linearity Over Intended Range of Monitor ML20135E3221997-02-13013 February 1997 Independent Review Team Rept 1996 MP -1 Lout NRC Exam Failures ML20134L2751997-02-0303 February 1997 Draft Rev to GPRI-30, Spent Fuel Storage Facility Licensing Basis/Design Basis ML20138K5721997-01-31031 January 1997 Monthly Operating Rept for Jan 1997 for Haddam Neck Plant.W/ ML20134L2791997-01-10010 January 1997 Rev 0 to QA Program Grpi ML20134L2911997-01-0808 January 1997 Rev 0 to UFSAR Rev Grpi ML20133M6121996-12-31031 December 1996 Monthly Operating Rept for Dec 1996 for Yankee Haddam Neck Plant 1999-04-28
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r Attachment 1 Connecticut Yankee Atomic Power Company Haddam Neck Plant r
Supplement to Annual Report l
May,1986 8606240224 860529 PDR ADOCK 05000213 PDR R
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Index Jumper-Lifted Lead-Bypass (3-LL-B) Changes 1
! 3-LL-B Number 3-LL-B Title 85-5 NIS Channel 34 Load Runback j 85-8 NIS Channel 34 Load Runback l 85-11 NIS Channel 34 Load Runback i
j 85-12 NIS Channel 34 Load Runback 85-29 NIS Channel 34 Load Runback 85-32 NIS Channel 34 Load Runback 4
J 85-38 NIS Channel 34 Load Runback 85-40 NIS Channel 34 Load Runback 35-42 NIS Channel 33 Load Runback i
j 85-45 DH-TV-1842A Temporary Piping 85-49 Steam Generator Steam Sample Piping and Feed System Piping i
i 85-53 Installation of Temporary Power Supply to Trailer #14 85-54 Installation of Temporary Power Supply to Trailer #16A 85-55 Installation of Temporary Power Supply to Trailer #21 85-56 Installation of Temporary Power Supply to Trailer #22 i 85-57 Installation of Temporary Power Supply to Trailer #25 85-58 Installation of Temporary Power Supply to Trailer #26 85-59 Installation of Temporary Power Supply to Trailer #29
) 85-60 Installation of Temporary Power Supply to Trailer #30 ;
! 85-61 Installation of Temporary Power Supply to Trailer #34 85-62 Installation of Temporary Power Supply to Building #15 1
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3-LL-B Number 35-5 3-LL-B Number 85-5, entitled "NIS Channel 34 Load Runback", is complete.
Description of Change An electrical jumper was installed on Nuclear Instrumentation System (NIS)
Channel 34 load runback circuit. The jumper has been removed.
Reason for Change The bypass was necessary because the circuit was producing spurious signals which could have resulted in an undesirable inadvertent turbine load runback.
Safety Evaluation The only safety analysis which credits the operation of the circuit being bypassed is the dropped rod. The latest rod drop analysis is documented in the Cycle 5 modification of control rod bank B. This analysis was performed to determine the effect of reducing the size of control rod bank B. The analysis took credit for the turbine load cutback and rod withdrawal block features, however those features were assumed to be actuated by the rod bottom bistables. Therefore this bypass did not affect the assumptions made in the safety analysis.
This bypass did not disable any channels which provide protection for high nuclear flux. It only prevented one of the four NIS channels from initiating a turbine runback and blocking automatic rod withdrawal. It cannot, of itself, cause a transient. The only event that this bypass could affect is a rod drop which does not actuate any rod bottom bistable and is not sensed by any of the other three operable nuclear channels. Because of the temporary nature of this change, this event is considered to be highly unlikely.
Although credited in the dropped rod safety analysis, the dropped rod protective circuits are not part of any Technical Specifications (T.S.). However, the T.S.
permit one excore detector to be taken out of service. Since taking one excore detector out of service would have the same effect as this bypass on the dropped rod protection, no degradation in dropped rod protection exists beyond that allowed by T.S. Since the plant administratively controls removing an excore detector from service that would take more than one dropped rod channel out of service, three of the dropped rod channels remain in service. Because of the above assessments, this temporary bypass does not create the possibility of an accident or malfunction of a dif ferent type than any evaluated previously.
The bypass does riot constitute an unreviewed safety question as defined in 10CFR$0.59(a)(2). ,
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- 3-LL-B Numbers 85-8,85-11,85-12,85-29,85-32,'85-38, and 85-40 The above 3-LL-B changes, each entitled "NIS Channel 34 Load Runback", are complete.
See 3-LL-B Number 85-5. ,
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3-LL-B Number 85-42 3-LL-B Number 85-42, entitled "NIS Channel 33 Load Runback", is complete.
Description of Change An electrical jumper was installed on NIS Channel 33 load runback circuit. The jumper has been removed.
Reason for Change The bypass was necessary to replace a failed light source on NIS Channel 33.
Safety Evaluation See 3-LL-B Number 85-5.
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3-LL-B Number 85-45 3-LL-B Number 85-45, entitled "DH-TV-1842A Temporary Piping", is complete.
Description of Change Temporary piping was installed from valve DH-V-316B to valve DH-V-316C. The piping has been removed.
Reason for Change The temporary piping was installed to allow for testing of valve DH-TV-1842A without causing the valve stem leakoff header relief valve to lif t.
Safety Evaluation 3-LL-B Number 85-45 addressed running one-half inch tubing from DH-V-316B to DH-V-316C. This enabled an operational test of DH-TV-1842A. Connecticut Yankee Technical Specifications (T.S.) state that when one or more isolation valve listed in Table 3.11-1 is inoperable, maintain at least one isolation valve operable in each affected penetration that is open. Valve DH-V-1842B was the isolation valve considered operable as required in T.S.
The tubing used was 316 stainless steel, .065 inch wall thickness and pressure rated at 2500 lb. The pressure rating of the line in which DH-TV-1842A is located is 150 lb. Therefore, the pressure issue was adequately addressed. An operator was stationed at DH-V-316B to isolate the jumper in case a problem developed. Adequate protection of the piping system was ensured by relief valve DH-RV-1841.
This jumper does not constitute an unreviewed safety question per the criteria contained in 10CFR50.59(a)(2).
3-LL-B Number 85-49 J-LL-B Number 85-49, entitled " Steam Generator Steam Sample Piping and Feed System Piping", is complete.
Description of Change Temporary tubing was installed on each steam header and a feed line, as well as temporary coolers which used service water for cooling the samples. The temporary tubing and coolers have been removed.
Reason for Change This change was necessary to determine the total amount of moisture carry over present in the steam exiting the steam generators.
Safety Evaluation This temporary modification involved installing tubing necessary to sample steam from each steam header simultaneously instead of sequentially as allowed by plant configuration. It also allowed for sampling feedwater through a much shorter length of pipe than currently available. These samples were cooled through temporary sample coolers using service water. The operability of plant systems or equipment is not affected by this temporary modification and does not constitute an unreviewed safety question per the criteria contained in 10CFR50.59(a)(2).
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3-LL-B Number 85-53 3-LL-B Number 85-53, entitled " Installation of Temporary Power Supply to Trailer #14", is complete.
Description of Change A jumper was installed on BUS 6 position 10C. This jumper has been removed.
Reason for Change i This jumper allowed temporary power to be installed to 9 trailers and a j temporary fabrication shop located in south trailer city.
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Safety Evaluation i
The new 480 volt loads to be added to BUS 6, position 10C are the fabrication i shop (Building #15) and the following 9 trailers:
- 21 - Nuclear Support Services
- 22 - Coast to Coast j # 29 - Flagg
- 30 - Flagg a
- 25 - Cummings i
- 26 - Flagg
- 16A - Myrock i # 14 - Flagg i #34 - Mark Controls i
I The installation of temporary power for trailers will exert a load on BUS 6 that is within the existing designed protection scheme for the breaker at position 10C. BUS 6, position 10C serves as separation and isolation between class and non-class equipment.
l The installation of temporary power has no effect on plant safety-related j equipment. The use of jumpers evaluated above does not constitute an unreviewed safety question per the criteria contained in 10CFR50.59(a)(2).
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1 i 3-LL-B Numbers 85-54, 8 5-55, 85-56, 85-57, 85-58, 85-59, 35-60, 85-61, and 85-p2_
The above 3-LL-B changes, each identified in the index, are complete.
, Description of Changes All of these temporary power supplies were associated with BUS 6 position 10C,
, and they have been removed.
Reason for Changes l
1 See 3-LL-B Number 85-53.
Safety Evaluation i See 3-LL-B Number 85-53.
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