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Category:TECHNICAL SPECIFICATIONS & TEST REPORTS
MONTHYEARML20217N3171999-10-19019 October 1999 Rev 1,change 024-01-0 to OP-1903.011, Emergency Response Notifications ML20217J7641999-10-0505 October 1999 Rev 1 to Unit 1 Technical Requirement Manual, Replacing Index Page ML20216G0881999-09-19019 September 1999 Proposed Tech Specs Pages,Changing TS 4.18.5.a.9 & Associated Bases for One Cycle of Operation Through End of Cycle 16 for Suppl Use of OTSG Repair Roll Technology ML20212F5851999-09-17017 September 1999 Proposed Tech Specs Pages,Changing TS by Revising Curie Limits for Radioactive Gas Storage Tanks ML20216G0721999-09-17017 September 1999 Proposed Tech Specs,Revising Once Through SG Tubing Surveillance Requirements to Provide Alternate Repair Criteria for Volumetric Integranular Attack ML20211P0061999-09-0707 September 1999 Proposed TS in Support of SG Outer Diameter Intergranular Attack Alternate Repair Criteria ML20211B3291999-08-19019 August 1999 Proposed TS 4.18.3.a.4 Clarification Supporting Tube End Cracking Alternative Repair Criteria ML20211C4101999-08-18018 August 1999 Proposed Tech Specs Removing Requiremets for Tube Repair (Sleeving) & Clarifying Requirements for Preservice & ISI of Tubes to Facilitate Replacement of Original SGs ML20211C1701999-08-18018 August 1999 Proposed Tech Specs Revising ESAS Low RCS Pressure Setpoint to Ensure That TS Adequately Bounds Safety Analysis ML20210N5541999-08-0404 August 1999 Rev 28,Permanent Change 4 to OP-1903.061, Communication Equipment Test ML20210N5571999-08-0404 August 1999 Rev 23,Permanent Change 5 to OP-1903.011, Emergency Response/Notifications ML20210K5121999-07-29029 July 1999 Proposed Tech Specs,Revising Requirements Associated with Plant Station Batteries & DC Sources to 125 Vdc Switchyard Distribution Sys ML20210K3571999-07-29029 July 1999 Proposed Tech Specs Revising SRs Pertaining to ISI Requirements for SG Tube Circumferential Cracking at top-of-tubesheet During 2P99 Planned mid-cycle Outage ML20209H5811999-07-14014 July 1999 Proposed Tech Specs Revising RB Structural Integrity Requirements Re ISI Reporting for Containment Structures, Tendons & Anchorages ML20209H8701999-07-14014 July 1999 Proposed Tech Specs 6.2.2 & 6.2.2.h,replacing Functional Description of Operations Staff Middle Manager with Ref to Functional Description Assistant Operations Manager & Revising TS Table 6.2-1 Item 5 & TS 6.2.2.f ML20209H9721999-07-14014 July 1999 Proposed Tech Specs Changes for Elimination of Programmatic Requirements Associated with PASS & Regulatory Relief from PASS Requirements of NUREG-0737 & RG 1.97 ML20195D2371999-06-0101 June 1999 Proposed Tech Specs Re Surveillance Requirements & Applicable Bases Relevant to ISI Requirements for Portions of once-through SG (OTSG) Tubes Adjacent to Primary Cladding Region of tube-to Tubesheet Roll ML20206T2651999-05-14014 May 1999 Proposed Tech Specs Revising SG Tubing SRs ML20206Q1281999-05-10010 May 1999 Proposed Tech Specs Bases,Page B 2-2,discussing Guidance to Be Used When Applying Later Editions & Addendas of ASME Code to RCS Components ML20206J8021999-05-0404 May 1999 PC-03 to Procedure/Work Plan 1904-002, Offsite Dose Projections Rdacs Computer Method ML20205P6931999-04-0909 April 1999 Proposed Tech Specs Change,Adding Specification 3.0.6 & Associated Bases to ANO-2 ML20205P3731999-04-0909 April 1999 Revised Proposed TS Page 5-1 Re Design Features Conversion ML20205P6431999-04-0909 April 1999 Revised Proposed Technical Requirement Manual Pages ML20205P4081999-04-0909 April 1999 Proposed Tech Specs Changes,Revising Reactor Bldg Structural Integrity Requirements ML20205P6291999-04-0909 April 1999 Proposed Tech Specs Changes,Revising Battery Requirements ML20207C0631999-02-25025 February 1999 Proposed Tech Specs Change Revising Action 2 Associated with Table 3.3-1, Reactor Protective Instrumentation. Change Adds Footnote to Action 2 Allowing Startup with Functional Units Associated with Channel D Excore Inoperable ML20207M7561999-02-24024 February 1999 Proposed Tech Specs,Allowing Startup & Continued Operation of Plant with Channel D Detector Until New Detector Is Installed During mid-cycle Outage Scheduled for Nov 1999 ML20198K1341998-12-17017 December 1998 Corrected Tech Specs Pages to 980629 Application for Amend to License NPF-6 ML20198A3661998-12-0808 December 1998 Proposed Tech Specs B3/4 6-3 & B3/4 6-4,deleting All Requirements Associated with Sodium H Addition Sys & Adding New Requirements for Trisodium Phosphate to Be Stored in Containers Located on Floor of Cb ML20196B4381998-11-24024 November 1998 Proposed Tech Specs Pages,Changing Administrative Controls Section to Implement Consolidated QA Plan Manual & Clarifying Responsibilities on STA Position on Shift ML20196C9761998-11-24024 November 1998 Rev 1 to Unit 2 Technical Requirements Manual ML20154D6681998-10-0101 October 1998 Rev 28 to Procedure/Work Plan 1904.002, Offsite Dose Projections Rdacs Computer Method ML20153D8491998-09-17017 September 1998 Proposed Tech Specs 2.2.1,3.3.1.1 & 3.3.2.1 Re Operating Bypass Setpoint ML20153H1651998-08-12012 August 1998 Rev 0 to ANO Units 1 & 2 Technical Requirements Manual ML20236Y5251998-08-0606 August 1998 Proposed Tech Specs Section 3.1.3.2,revising Action Requirements for CEA Position Indicator Channels ML20236Y5081998-08-0606 August 1998 Proposed Tech Specs Section 3.3.4.B Re Sodium Hydroxide Tank Limits ML20236Y5951998-08-0606 August 1998 Proposed Tech Specs,Revising Requirements Associated W/Units 1 & 2 Control Room Emergency Ventilation Sys ML20236Q2781998-07-13013 July 1998 Proposed Tech Specs Re Safety Limits & Limiting Safety Settings ML20236G6921998-06-29029 June 1998 Proposed Tech Specs,Revising TS 3.4.2 & TS 3.4.12 Re Reactor Coolant Sys Safety Valves & Low Temp Overpressure Protection ML20236G5421998-06-29029 June 1998 Proposed Tech Specs,Revising Surveillance Testing Requirements for Unit 2 Direct Current Electrical Distribution Sys ML20236G5631998-06-29029 June 1998 Proposed Tech Specs,Revising Table 3.3-4 to Provide Range of Acceptable Values for 4160 Volt Bus Loss of Voltage Values ML20236G4911998-06-29029 June 1998 Proposed Tech Specs Re MSSVs & Pressurizer Safety Valves ML20199F7211998-05-22022 May 1998 Rev 8 to Simulator Mod Control,Training Desk Guide 6.3 ML20217N6141998-04-30030 April 1998 Proposed Tech Specs 1.6.1,revising Definition of Quadrant Power Tilt ML20217M2621998-04-30030 April 1998 Proposed Tech Specs Re DG Load Rejection Testing ML20217M4871998-04-28028 April 1998 Proposed Tech Specs Changing Order of Channel Rotation During Outage for Scheduling Flexibility,While Still Requiring Rotation Schedule to Be Established for Operating Cycle ML20217P8141998-04-0101 April 1998 Proposed Tech Specs Re Upper Tubesheet Volumetric Indications to Remain in Svc for Cycle 15 ML20216J7841998-03-17017 March 1998 Proposed Tech Specs Bases Change Concerning Plant Protection Sys Matrix Logic Testing ML20203D1061998-02-18018 February 1998 Proposed Tech Specs Revising Surveillance Testing Requirements for Emergency Feedwater Sys ML20202G9771998-02-0909 February 1998 Proposed Tech Specs Pages,Allowing Use of Repair Roll Technology (Reroll) for Upper Tubesheet Region of SGs 1999-09-07
[Table view] Category:TEST/INSPECTION/OPERATING PROCEDURES
MONTHYEARML20217N3171999-10-19019 October 1999 Rev 1,change 024-01-0 to OP-1903.011, Emergency Response Notifications ML20217J7641999-10-0505 October 1999 Rev 1 to Unit 1 Technical Requirement Manual, Replacing Index Page ML20210N5571999-08-0404 August 1999 Rev 23,Permanent Change 5 to OP-1903.011, Emergency Response/Notifications ML20210N5541999-08-0404 August 1999 Rev 28,Permanent Change 4 to OP-1903.061, Communication Equipment Test ML20206J8021999-05-0404 May 1999 PC-03 to Procedure/Work Plan 1904-002, Offsite Dose Projections Rdacs Computer Method ML20205P6431999-04-0909 April 1999 Revised Proposed Technical Requirement Manual Pages ML20196C9761998-11-24024 November 1998 Rev 1 to Unit 2 Technical Requirements Manual ML20154D6681998-10-0101 October 1998 Rev 28 to Procedure/Work Plan 1904.002, Offsite Dose Projections Rdacs Computer Method ML20153H1651998-08-12012 August 1998 Rev 0 to ANO Units 1 & 2 Technical Requirements Manual ML20199F7211998-05-22022 May 1998 Rev 8 to Simulator Mod Control,Training Desk Guide 6.3 ML20202E1611997-12-0101 December 1997 IST Program Third Ten Yr Interval Submittal. W/32 Oversize Drawings ML20211Q1221997-10-14014 October 1997 Rev 22,change 2 to OP-1903.011, Emergency Response Notifications ML20198J8081997-10-14014 October 1997 Rev 28,Permanent Change 2 to Procedure/Work Plan 1903.061, Communications Equipment Tests ML20217K3001997-08-0808 August 1997 Change PC-03,Rev 21 to Work Plan 1903.030, Evacuation ML20151K2241997-07-29029 July 1997 Change PC-01,Rev 6 to OP-1903.035, Adm Potassium Iodide ML20148T0441997-07-0101 July 1997 Change PC-01 to Rev 12 to Procedures OP-1903.067, Emergency Response Facility - Emergency Operations Facility (Eof) ML20148T0221997-07-0101 July 1997 Change AP-06 to Rev 6 to Procedure OP-1903.035, Adm Potassium Iodide ML20148T0051997-07-0101 July 1997 Change PC-01 to Rev 32 to Procedure OP-1903.060, Emergency Supplies & Equipment ML20141C5421997-06-17017 June 1997 2 to Procedure Work Plan 1903.065, Emergency Response Facility Technical Support Center (Tsc) ML20148T5391997-06-0101 June 1997 Rev 0 to Third Ten-Year Interval ISI Plan for ANO Unit 1 ML20140C0951997-03-26026 March 1997 Rev 11,Change AP-11,to OP-1903.034, Emergency Operations Facility Evacuation ML20137D9271997-03-18018 March 1997 Rev 21-04-00,Change PC-04 to OP-1903.011, Emergency Response/Notifications ML20137W3621997-03-17017 March 1997 Rev 2 to Test Procedure TR-228, Three Hour Fire Test of One and Three Hour Versawrap Raceway Fire Barrier Sys for Conduits & Cable Trays ML20115D8901996-07-10010 July 1996 Permanent Change (Pc) PC-03 to Rev 11 to OP-1903.065, Emergency Response Facility Tsc ML20107G3981996-04-17017 April 1996 Rev 4 to Procedure 1903.053, Logistical Support, Combining Procedures 1903.054 & 1903.078 in W/Procedure 1903.053 & Deleting Procedures 1903.054 & 1903.078 Completely ML20107G4231996-04-17017 April 1996 Rev 4 to Procedure 1903.078, Emergency Response Support, Deleting Procedure.Info from Procedure Incorporated Into Procedure 1903.053, Logistical Support ML20107G4011996-04-17017 April 1996 Rev 6 to Procedure 1903.054, Addl Personnel, Deleting Procedure.Pertinent Info,Instructions & Requirements from Procedure Will Be Incorporated Into Procedure 1903.053, Logistical Support ML20101E3851996-03-13013 March 1996 Rev 15 to OP-1903.062, Communication Sys OP Procedure ML20101E3571996-03-13013 March 1996 Rev 28 to OP-1903.061, Communication Equipment Test ML20101E3771996-03-13013 March 1996 Rev 8 to OP-1903.066, Emergency Response Facility Osc ML20097B2221996-02-0606 February 1996 Change AP-33 to Rev 33 to OP-1903.010, EAL Classification ML20095F9611995-12-0707 December 1995 Permanent Change (Pc) PC-02 to Rev 27 to Procedure/Work Plan OP-1904.002, Offsite Dose Projection Rdacs Computer Method ML20091K8261995-08-28028 August 1995 Change PC-1 to Rev 9 to Procedure/Work Plan 1903.067, Emergency Response Facility - Eof ML20087B6431995-08-0808 August 1995 Rev 27 to Procedure/Work Plan 1904.002, Offsite Dose Projection Rdacs Computer Method ML20086B3901995-07-0505 July 1995 Rev 9 to Procedure/Work Plan 1903.067, Emergency Response Facility - Eof ML20084U7381995-06-13013 June 1995 Page 14 of Rev 20 to Procedure/Work Plan 1903.011, Emergency Response/Notifications ML20084L9881995-05-25025 May 1995 Rev 20 to Procedure/Work Plan 1903.011, Emergency Response/ Notifications ML20097B2201995-05-16016 May 1995 Change PC-2 to Rev 31 to OP-1903.060, Emergency Supply Equipment ML20083Q2961995-05-16016 May 1995 Rev 13 to Procedure/Work Plan 1905.002, Offsite Emergency Monitoring ML20083Q3071995-05-16016 May 1995 Rev 31 to Procedure/Work Plan 1903.060, Emergency Supplies & Equipment ML20083Q2891995-05-16016 May 1995 Rev 6 to Procedure/Work Plan 1903.064, Emergency Response Facility - Cr ML20083L6171995-05-0505 May 1995 Rev 9 to Procedure/Work Plan 1903.034, EOF Evacuation ML20083L6141995-05-0505 May 1995 Rev 4 to Procedure/Work Plan 1905.031, Airborne I-131 Determination Using RM-14.HP-210 ML20083L5941995-05-0505 May 1995 Rev 5 to Procedure/Work Plan 1905.004, EOF Radiological Controls ML20082E2211995-03-31031 March 1995 Rev 1 to Procedure/Work Plan 1903.068, Emergency Response Facility - Emergency News Center ML20081K0331995-03-16016 March 1995 Rev 27 to Procedure/Work Plan 1903.061, Communications Equipment Tests ML20078R0771995-02-0909 February 1995 Rev 21 to Procedure/Work Plan 1903.030, Evacuation ML20078G8921995-01-26026 January 1995 Rev 30 to Procedure/Work Plan 1903.060, Emergency Supplies & Equipment ML20078J1101995-01-13013 January 1995 Public Version of Rev 14 to Operating Procedure 1903.062, Communication Sys Operating Procedure ML20095J6271995-01-0303 January 1995 Permanent Change (Pc) PC-01 to Rev 11 to Procedure/Work Plan OP-1903.065, Emergency Response Facility Tsc 1999-08-04
[Table view] |
Text
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i PERMANENT REPAIR PLAN FOR THE ANO-2 PRESCURISER o4/21/ss s
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8806010257 890527 PDR ADOCK 05000368 P DCD
_ _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _u__ 1
BACKGROUND:
In late April, 1987, a small Reactor Coolant System leak was detected, and through containment entries was determined to be coming from the pressurizer high point vent and the pressurizer lower head. As a result the plant was shutdown in accordance with Technical Specifications and the event was reported in accordance with 10CFR50.72 and 50.73. The
, leakage source at the lower head was determined to be the X-1 heater sleeve. Further inspections via video camera from inside the pressurizer revealed that the X-1 and T-4 heaters had failed. A tecporary repair was made by drilling out both heaters and welding low alloy steel plugs into the holee using the temper bead process. The temporary repair was reviewed and approved by the NRC.
In the NRC's Safety Evaluation Report for the temporary repair Arkansas Power and Light Co. was requested to submit its plans for a permanent repair by November 1, 1987. The preliminary repair plan was presented to the NRC in a meeting in Bethesda, Md. on October 26, 1987. As a result of the October 26, meeting the NRC requested that the final repair plan be submitted to them after completion of the mockup testing. This report is to provide the final repair plan to the NPC. The final repair plan has not changed from the preliminary plan, as presented to the NRC, with the exception of some minor design details.
1 2.EffANENT REPAIR - APPLICABLE CODES:
1 All codes used are NRC approved per 10CFR50.55a. The l following table summarizes the applicable codes used for the '
design of the permanent repair.
Original Design Code:
ASME Section III, 1968 edition, through 1970 addenda for Class A Vessels. .
I Design Code:
ASME Sectior. III, 1980 . tion, through Winter 1981 adc .ida, reconciled to the original design code.
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Repair Code:
ASME Section XI, 1980 edition, through Winter 1981 addenda, raconciled to the original design code.
PERMANENT REPAIR PROCESS OUTLINE:
The following is a general outline of the repair process. A detailed description of the repair process is contained in the Field Construction Procedures and other specific procedures for the project.
- 1. Install temporary support structure.
- 2. Removal of the Temporary Plug:
- a. Mark the penetration to be removed. l 1
- b. Layout and mark a 10" band around the repair area. I
- c. Perform informational UT and MT in the marked area.
- d. Drill out the existing plug.
- e. Grind weld prep area to specification. I l
- 3. Preparation and Pre-inspection:
i
- a. Measure and record the dimensions of the final weld i
prep cavity,
- b. MT the weld prep in accordancn with NB-5000.
- c. Install heaters and thermocouples as required for pra-heating the vessel head.
- d. Preheat the repair area, perform the buttering weld in accordance with the half bead technique to 1/4" minimum thickness and perform PT and UT in accordance ,
with ASME Code requirements.
- e. Grind or ream the penetration to remove any weld metal covering the edge of the penetration.
- f. Measure and record the dimensions of the buttered cavity and the penetration.
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- 4. Nozzle Installation: q
- a. Machine the nozzle'as required to achieve the desired fit.
- b. Align nozzle insertion tooling using dummy nozzle.
- c. Shrink fit nozzle int penetration and verify proper position.
- d. Install automatic weld head and verify proper position. Perform the. seal weld,
- e. Perform VT on the seal weld using a borescope.
- f. Perform the structural weld with progressive PT every 1/4" of deposited thickness,
- g. Final grind the structural weld to the required contour. UT and MT the base material and PT the structual weld. Repeat the VT on the seal weld.
- h. Install the plug into the nozzle and weld. PT the plug weld.
- i. Remove the temporary support structure. MT ground areas.
- j. Perform the system pressure tert as required by ASME i Section XI, IWB-50CO.
Figure 1 shows the configuration of an installed nozzle (typical of both X-1 and T-4). ,
I MOCKUP TESTING:
A full scale mockup was constructed to simulate the lower pressurizer head area, including the surrounding heater i nozzles. The mockup was used for demonstrating the actual repair techniques to be used in the field, for welder qualification in accordance with ASME Section IX and XI, and for training of the welders and the machinists who will actually perform the repair. All mockup qualification was performed in appropriate proteccive clothing, ir.aluding respirators.
The mockup was also used to quantify the amottnt and size of the debris which will be generated inside the pressurizer, primarily during the drilling and reaming process of removing the temporary plug. It was also used to develop techniques to minimize the amount of debris left in the pressurizer.
(Note that the debris to be left in the pressurizer is very Page 3 k- -
.. .e I 3/8" W = =
/
INCONEL
/\
CLADDING f
/ x l SA 533 GR. B CLI HEAD MATERIAL-
'/,
f ,
INCONEL WELD
/ /
/ /
/ /
f ,
15.4"
/ /
/ /
/ /
INCONEL NOZZLE 4
/
/
/ 1.625" W l
/ l l
l
/ / '
/ ,
/ /
/ /
/// I (9 N
/
h kf 1 hk INCONEL WELO INCONEL PLUG
= = 1.663 %
Figure 1 Page 4
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'ninical'cnd was cddrocccd in tho 10CFR50.59 02foty cvaluation included in the Design Change Package.) l MATERIAL CONSIDERATIONS:
The permanent repair process addresses all material concerns i
with the existing repair as follows:
- 1. The seal weld joining the nozzle to the vessel cladding will preclude exposure of the SA-533 Gr B Cl 1 vessel shell to berated water.
- 2. The use of Inconel weld material will eliminatc concern l with hydrogen embrittlement and stress corrosion cracking l of existing low alloy (E8018) weldment on the pressurizer shell outside surface.
WELDING AND MATERIALS:
The ASME Section XI half bead welding technique for i dissimilar materials (IWB-4340) will be used for making tho l buttering weld layer on the prepared cavity. The structural l weld joining the buttering layer to the nozzle will be made per ASME Section III. The weld material for the half bead buttering weld will be ENiCrFe-3 (Inconel 182). The weld material for the structural weld will be ERNiCr-3 (Inconel
- 82) for the first pass and ENiCrFe-3 (Inconel 182) for the subsequent passes.
The nozzle will be Inconel 600 thermally treated at 1300 degrees Fahrenheit plus or minus 25 degrees Fahrenheit for 16 hours1.851852e-4 days <br />0.00444 hours <br />2.645503e-5 weeks <br />6.088e-6 months <br />.
HALF BEAD AND STRUCTURAL WELD:
The following is an outline of the weld procedure. This outline is not intended to be a detailed description of the weld procedure, but is to provide a general description of the welding process. A detailed description of the weld procedures are contained in the specific procedures for the project.
- 1. Preheat the weld area to 300 degrees Fahrenheit for 30 minutes.
- 2. Butter the cavity surface with one weld layer, using 3/32" diameter ENiCrFe-3 electrodes.
- 3. Remove one-half of the first weld layer by grinding.
- 4. Continue welding until the buttered thickness is 1/4".
- 5. Increase preheat to 450 - S50 degrees Fahrenheit for a minimum of 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
Page 5
. , , h 'r. ' *
- 6. Cool to ambient temperature and hold for 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />. UT and PT the buttering layer.
- 7. Remove thermocouples, grind surface, and perform MT or PT of ground areas.
- 8. Install the nozzle and perform the seal weld. Complete the structural weld joining the nozzle to the buttering layer. Perform progressive PT exuaination during the deposition of the structural weld.
- 9. PT the completed structural weld.
WELDING PROCEDURE OUALIFICATIONS:
The welding procedures for the temporary attachment of the drill support fixture to the pressurizer skirt, and for the structural weld joining the buttering layer to the nozzle, used previously qualified and approved B&W procedures.
The welding process for the seal weld was specifically developed and qualified for this repair by B&W. The seal weld is done using a computer controlled weld head inserted through the nozzle. The weld is autogenous and the process is qualified to produce a minimum throat thickness of 1/16",
although the actual throat achieved is consistently greater than the 1/16" minimum which is required by the analysis.
The welding process for the half bead buttering was also specifically developed and qualified for this repair by B&W.
Microstructural tests performed by B&W on the weld l qualification coupons have demonstrated that the half bead j technique used will not leave untempered martensite in the
)
heat affected zone.
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