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{{#Wiki_filter:r f FLORIDA POWER & LIGHT ST. LUCIE UNIT 2 STEAM GENERATOR INSPECTION PLANNING FOR SL2-16, APRIL 2006 St Lucie Unit 2 -Steam Generator Inspection Planning for SL2-16 AGENDA.Purpose of Meeting.Background | {{#Wiki_filter:r f | ||
& S/G Condition* SL2-16 Inspection Scope.Projected Tube Plugging* Operating Experience | FLORIDA POWER & LIGHT ST. LUCIE UNIT 2 STEAM GENERATOR INSPECTION PLANNING FOR SL2-16, APRIL 2006 St Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 AGENDA | ||
* Contingency Planning* Generic Letter 2006-01.Summary & Closing 2 FPL 1 V St. Lucie Unit 2 -Steam Generator Inspection Planning for SL2-16 Purpose of Meeting* Review SL2 S/G Condition* Review SL2-15 Inspection Planning* Address Staff Concerns St. Lucie Unit 2 -Steam Generator Inspection Planning for SL2-16 Background | . Purpose of Meeting | ||
& S/G Condition* SIG Design* cEModel 3410* 84l1 Tubes I SG* -19.3 EFPY @ SL2-16* A-600 HTMA Tubing* CS Lattice Support System (eggcrates) | . Background & S/G Condition | ||
* Tubesheet Joint -Explosive* Total Tubes Plugged-SG A -1469 (17.5%)-SG B -1709 (20.3%)* T-Hot -600OF FPL ./2 r St Lucie Unit 2 -Steam Generator Inspection Planning for SL2-16 Background | * SL2-16 Inspection Scope | ||
& S/G Condition FPL Steam Generator Program* Committed to Safe Operation* Full Implementation of NEI 97-06, S/G Program Guidelines | . Projected Tube Plugging | ||
' Inspection | * Operating Experience | ||
' Chemistry Leak Monitoring | * Contingency Planning | ||
* Generic Letter 2006-01 | |||
. Summary & Closing 2 | |||
FPL 1 | |||
V St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Purpose of Meeting | |||
* Review SL2 S/G Condition | |||
* Review SL2-15 Inspection Planning | |||
* Address Staff Concerns St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Background & S/G Condition | |||
* SIG Design | |||
* cEModel 3410 | |||
* 84l1 Tubes I SG | |||
* -19.3 EFPY @ SL2-16 | |||
* A-600 HTMA Tubing | |||
* CS Lattice Support System (eggcrates) | |||
* Tubesheet Joint - Explosive | |||
* Total Tubes Plugged | |||
- SG A - 1469 (17.5%) | |||
- SG B - 1709 (20.3%) | |||
* T-Hot -600OF FPL ./ | |||
2 | |||
r St Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Background & S/G Condition FPL Steam Generator Program | |||
* Committed to Safe Operation | |||
* Full Implementation of NEI 97-06, S/G Program Guidelines | |||
' Inspection | |||
' Chemistry Leak Monitoring | |||
* Incorporate Industry Experience | * Incorporate Industry Experience | ||
* Extensive Examination History at Unit 2 | * Extensive Examination History at Unit 2 XConservative Approach | ||
,,- --FP 5 FPLop St. Lucie Unit 2 -Steam Generator Inspection Planning for SL2-16 Background | &In Situ Pressure Test at Last 6 Inspections ,,- - - | ||
& S/G Condition* Last Inspection | FP 5 FPLop St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Background & S/G Condition | ||
-SL2-15 in January 2005 a Results Discussed with NRR During Outage' Damage Mechanisms Generally as Expected | * Last Inspection - SL2-15 in January 2005 a Results Discussed with NRR During Outage | ||
' Damage Mechanisms Generally as Expected 1Tube Ding with ODSCC Limited PWSCC in Tubesheet (3in Upper 2", 1 at Tack Roll) | |||
-Various ID Cracks in Tubesheet OD Cracks at Dings OD Cracks in Freespan | 'Increase in Axial ODSCC at Eggcrate Supports | ||
& SIG Condition Benchmark of Predicted (best estimate) vs. Observed Indications Mechanism Case Predicted Observed Axial ODSCC at Eggcrates Worst SG 928 1217 Axial ODSCC at Tube Dings All SGs 2 1 Axial ODSCC at Transition All SGs 43 16 Axial IDSCC below Transition All SGs 15 2 Circ. ODSCC at Transition All SGs 25 17 FPL St. Lucie Unit 2 -Steam Generator Inspection Planning for SL2-16 Background | 'RCL Indications Detected During Pull Out Scans | ||
& SIG Condition Probability of Burst (POB)Mechanism SG A SIG B ODSCC' at E c029crats 0.0777 ODSCC at D)ings 0.00(Y O)SCC at Topofa-Tubcshect | 'Addressed in OA Model | ||
-0 Cumulatisv P0I3 0.0356* Significant Axial Degradation Mechanisms | 'Tested with Qualified Technique if > .35 Volts | ||
* Cycle 15 Length for 10% POB Criterion | 'No Tube Integrity Issues. A FPL 3 | ||
-17.4 EFPM* Cycle 15 Length for 5% POB Criterion | |||
-16.2 EFPM _ o* Planned Cycle 15 Length is -14.5 EFPM , FPLI S | V St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Indication Count Summary for SL2-15 Mechanism SIG A SIG B Total Axial ODSCC at Eggcrate Supports 1184 1266 2450 Axial ODSCC at Diagonal Supports 1 8 9 Axial ODSCC at Tube Dings 0 1 1 Axial ODSCC in Freespans 0 1 1 Axial ODSCC at Top of HL Tubesheet 14 2 16 Axial IDSCC Below Top of HL Tubesheet 1 1 2 Circ. ODSCC at Top of HL Tubesheet 7 10 17 Circ. IDSCC at Top of HL Tubesheet 0 1 1 Circ. IDSCC at HL Tube End 0 1 1 Wear Due to Foreign Objects 1 1 2 Wear at Diagonal & Vertical Supports 672 443 1115 Wear at Eggcrate Tube Supports 67 73 140 FPL St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Background & S/G Condition TUBE PLUGGING HISTORY Damaae Mechanism (1) 4100 11101 4103 1105 OD Cracks at Tube Supports 14 259 482 1592 Mech. Wear at Tube Supports 18 11 1 OD Cracks at Tubesheet 17 20 27 20 Preservice, FO, Preventative 51 6 2 Circ. OD Cracks at Tubesheet 5 13 10 15 OD Volumetric - Various 2 ID Cracks in Tubesheet 4 3 OD Cracks at Dings 5 1 OD Cracks in Freespan _ 1 1 54 361 530 1635 Cumulative Plugging 652 1013 1543 3178 , | ||
-i St. Lucie Unit 2 -Steam Generator Inspection Planning for SL2-16 Background | Cumulative Percent 3.9% 6.0% 9.2% -1B.9%:.. | ||
& S/G Condition In Situ Pressure Testing SL2-9 Through SL2-15* 73 Total Indications (19 at SL2-15)* Mechanisms Include Axial ODSCC at Eggcrates Axial ODSCC at Dings'LAxial ODSCC at TTS' Axial IDSCC below TTS Circ ODSCC at TTS' Circ IDSCC at TTS OD Volumetric TTS | 'I (1) Axial unless noted otherwise a_ '8 ot-FPL 4 | ||
(+3" /-13")Cold Leg Periphery Tubes (+3"/-2")20% Row 1-2 U-bends (A-23, B-25)20% Wear at Vertical Straps (A-86, B-58)' .00% Wear at Eggcrates, HL & CL Diagonals (A-274,;B-202) | |||
Full Tubesheet if No Tube Expansion (A-21,-B-1) 1-FPL 6 I St Lucie Unit 2 -Steam Generator Inspection Planning for SL2-16 SL2-16 Inspection Scope (con't)* Plus Point Probe for Dings SGA SGB' All Dings Hot Leg Tubesheet to 1st Support 68 78' All Dings >5 volts 1st Support to HL Bend 57 80 All Dings in HL & CL Square Bends Row 19-140 90 68' All Dings >5 volts in Horizontal Run Row 19-140 71 102' All Dings in Rows 1-18 U-Bends 113 89' 20% Dings >5 volts CL Tubesheet to CL Bend 17 23 416 440* In Situ Testing Based on Industry Screening Guidance FPL -13 St. Lucie Unit 2 -Steam Generator Inspection Planning for SL2-16 Projected Tube Plugging Pr~ | V St Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Background & SIG Condition Benchmark of Predicted (best estimate) vs. Observed Indications Mechanism Case Predicted Observed Axial ODSCC at Eggcrates Worst SG 928 1217 Axial ODSCC at Tube Dings All SGs 2 1 Axial ODSCC at Transition All SGs 43 16 Axial IDSCC below Transition All SGs 15 2 Circ. ODSCC at Transition All SGs 25 17 FPL St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Background & SIG Condition Probability of Burst (POB) | ||
2722 2485 165.1 1434 Aexial ODSCC Near TTS 30 I0 30 10 ircuinfermntial ODSCC2at 171S I 20 15 20 ANial I DSCC fICAow TriS 5 , S 5 C.irunircrcntiiil iScc .tcibw rrs s 5 S 5 Axi¶,l Oi )SCC at Dings S | Mechanism SG A SIG B ODSCC' at E c029crats 0.0777 ODSCC at D)ings 0.00(Y O)SCC at Topofa-Tubcshect -0 Cumulatisv P0I3 0.0356 | ||
* Sleeve Tubes that Require Only 1 Sleeve* Maintain 30% Effective Tube Plugging Margin* Contingency for 42% Tube Plugging> Required Repairs Exceed Expectations | * Significant Axial Degradation Mechanisms | ||
' Sleeving Field Effort Difficulties | * Cycle 15 Length for 10% POB Criterion - 17.4 EFPM | ||
-' 15 FPL St. Lucie Unit 2 -Steam Generator Inspection Planning for SL2-16 Operating Experience | * Cycle 15 Length for 5% POB Criterion - 16.2 EFPM _ o | ||
* Continue Emphasis on Dings/Dents | * Planned Cycle 15 Length is -14.5 EFPM , | ||
FPLI S | |||
* Foreign Object Damage* Batwing Support Condition (Waterford) | |||
* Fabrication Issues (Byron & Davis Besse)* Tube to Tube Wear (Tube Sever)' Susceptible Locations to be Reviewed by Lead Analysts.-16 FPL 8 St. Lucie Unit 2 - | -i St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Background & S/G Condition In Situ Pressure Testing SL2-9 Through SL2-15 | ||
* 73 Total Indications (19 at SL2-15) | |||
* Mechanisms Include Axial ODSCC at Eggcrates Axial ODSCC at Dings | |||
'LAxial ODSCC at TTS | |||
' Axial IDSCC below TTS Circ ODSCC at TTS | |||
' Circ IDSCC at TTS OD Volumetric TTS | |||
* No Leakage or Burst 5 .- - Bl y . ". . . | |||
* 11 FPL St. Lucie Unit 2- Steam Generator Inspection Planning for SL2-16 SL2-16 Inspection Scope | |||
* Visual Examination of All Tube Plugs | |||
* Bobbin Probe All Active Tubes Screen Dings <5 Volts in Straight Sections | |||
' Full Length Row 3-140, Straight Length Row 1-2 | |||
* Plus Point Probe 100% Hot Leg Top of Tubesheet (+3" /-13") | |||
Cold Leg Periphery Tubes (+3"/-2") | |||
20% Row 1-2 U-bends (A-23, B-25) 20% Wear at Vertical Straps (A-86, B-58) | |||
' .00% Wear at Eggcrates, HL & CL Diagonals (A-274,;B-202) | |||
Full Tubesheet if No Tube Expansion (A-21,-B-1) 1-FPL 6 | |||
I St Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 SL2-16 Inspection Scope (con't) | |||
* Plus Point Probe for Dings SGA SGB | |||
' All Dings Hot Leg Tubesheet to 1st Support 68 78 | |||
' All Dings >5 volts 1st Support to HL Bend 57 80 All Dings in HL & CL Square Bends Row 19-140 90 68 | |||
' All Dings >5 volts in Horizontal Run Row 19-140 71 102 | |||
' All Dings in Rows 1-18 U-Bends 113 89 | |||
' 20% Dings >5 volts CL Tubesheet to CL Bend 17 23 416 440 | |||
* In Situ Testing Based on Industry Screening Guidance FPL - 13 St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Projected Tube Plugging Pr~dictdcNumbir PrchictedNurnm.r of Indliations at of Tub.. R*paired EO :i5 atE FOCIS Mochanismitocation SIG A SIG B SIG A SIC B Axial ODS('C at ls '.cratr Sulqxirts ILtwer 5t 21_00 2178 145S 1257 BLkt Estinlatc 2561 2331 1556 1345 tUppcr954% 2722 2485 165.1 1434 Aexial ODSCC Near TTS 30 I0 30 10 ircuinfermntial ODSCC2at 171S I 20 15 20 ANial I DSCC fICAow TriS 5 , S 5 C.irunircrcntiiil iScc. tcibw rrs s 5 S 5 Axi¶,l Oi)SCC at Dings 5 S 5 Best Estimate Cumulative Repairs -3050 -3075 Current Tube Plugging Limit 2520 .;252 : | |||
FPL 14 7 | |||
I St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Tube Sleeving Plans Westinghouse Alloy 800 Leak Limiting Sleeve | |||
* 60-70% of Repairable Tubes are Candidates | |||
* Sleeve Tubes that Require Only 1 Sleeve | |||
* Maintain 30% Effective Tube Plugging Margin | |||
* Contingency for 42% Tube Plugging | |||
> Required Repairs Exceed Expectations | |||
' Sleeving Field Effort Difficulties | |||
- ' 15 FPL St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Operating Experience | |||
* Continue Emphasis on Dings/Dents & | |||
Anomalous Indications | |||
* Foreign Object Damage | |||
* Batwing Support Condition (Waterford) | |||
* Fabrication Issues (Byron & Davis Besse) | |||
* Tube to Tube Wear (Tube Sever) | |||
' Susceptible Locations to be Reviewed by Lead Analysts | |||
. -16 FPL 8 | |||
St. Lucie Unit 2 - Siteam Generator Inspection Plannin,g for SL2-16 Contingenc y Planning Issue or Inspection Item ContinQency Action Leaking Plug Replace as Necessary Crack in Row 1&2 U-bend Test 100% Affected Rows | |||
& 20% Row 3, etc. | |||
Crack in U-bend Wear Scar Test All (A-430, B-290) | |||
Crack in Cold Leg Ding Test All (A-85, B-1 15) | |||
Foreign Object Wear Bound FO Wear CL Expansion Transition Cracking Test 100% in Affected SG Freespan Cracking Validate Bobbin POD RCL Indications on Pull Out Scan Retest if >.35 Volts ,,,¢ <tws-7 17 FPL St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Generic Letter 2006-01 Submit LAR to Adopt TSTF-449 By May 31, 2006 | |||
> Replacement SG Program | |||
> Original SG Program | |||
* Include Sleeving Repair Method | |||
* Include Tubesheet Inspection Provisions (C*) | |||
*Administrative Controls | |||
- Limit Pri-Sec Leakage to 108 gpd/SG | |||
- Address Leakage Predictions for 1 7 Tubesheet & Sleeves 18 FPL ,es 9 | |||
I St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Summary & Closing | |||
* FPL Program Meets Industry Guidance | |||
. Comprehensive Inspection Program | |||
* Reasonable Assurance of Tube Integrity | |||
* Compliance with Tech Specs & NRC Positions | |||
* Amend License for TSTF-449 | |||
* Identify & Address Staff Concerns FPL 19 10}} |
Latest revision as of 20:34, 23 November 2019
ML061110072 | |
Person / Time | |
---|---|
Site: | Saint Lucie ![]() |
Issue date: | 04/20/2006 |
From: | Florida Power & Light Co |
To: | Office of Nuclear Reactor Regulation |
References | |
Download: ML061110072 (10) | |
Text
r f
FLORIDA POWER & LIGHT ST. LUCIE UNIT 2 STEAM GENERATOR INSPECTION PLANNING FOR SL2-16, APRIL 2006 St Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 AGENDA
. Purpose of Meeting
. Background & S/G Condition
- SL2-16 Inspection Scope
. Projected Tube Plugging
- Operating Experience
- Contingency Planning
. Summary & Closing 2
FPL 1
V St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Purpose of Meeting
- Review SL2 S/G Condition
- Review SL2-15 Inspection Planning
- Address Staff Concerns St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Background & S/G Condition
- SIG Design
- cEModel 3410
- 84l1 Tubes I SG
- -19.3 EFPY @ SL2-16
- A-600 HTMA Tubing
- CS Lattice Support System (eggcrates)
- Tubesheet Joint - Explosive
- Total Tubes Plugged
- SG A - 1469 (17.5%)
- SG B - 1709 (20.3%)
- T-Hot -600OF FPL ./
2
r St Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Background & S/G Condition FPL Steam Generator Program
- Committed to Safe Operation
- Full Implementation of NEI 97-06, S/G Program Guidelines
' Inspection
' Chemistry Leak Monitoring
- Incorporate Industry Experience
- Extensive Examination History at Unit 2 XConservative Approach
&In Situ Pressure Test at Last 6 Inspections ,,- - -
FP 5 FPLop St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Background & S/G Condition
- Last Inspection - SL2-15 in January 2005 a Results Discussed with NRR During Outage
' Damage Mechanisms Generally as Expected 1Tube Ding with ODSCC Limited PWSCC in Tubesheet (3in Upper 2", 1 at Tack Roll)
'Increase in Axial ODSCC at Eggcrate Supports
'RCL Indications Detected During Pull Out Scans
'Addressed in OA Model
'Tested with Qualified Technique if > .35 Volts
'No Tube Integrity Issues. A FPL 3
V St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Indication Count Summary for SL2-15 Mechanism SIG A SIG B Total Axial ODSCC at Eggcrate Supports 1184 1266 2450 Axial ODSCC at Diagonal Supports 1 8 9 Axial ODSCC at Tube Dings 0 1 1 Axial ODSCC in Freespans 0 1 1 Axial ODSCC at Top of HL Tubesheet 14 2 16 Axial IDSCC Below Top of HL Tubesheet 1 1 2 Circ. ODSCC at Top of HL Tubesheet 7 10 17 Circ. IDSCC at Top of HL Tubesheet 0 1 1 Circ. IDSCC at HL Tube End 0 1 1 Wear Due to Foreign Objects 1 1 2 Wear at Diagonal & Vertical Supports 672 443 1115 Wear at Eggcrate Tube Supports 67 73 140 FPL St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Background & S/G Condition TUBE PLUGGING HISTORY Damaae Mechanism (1) 4100 11101 4103 1105 OD Cracks at Tube Supports 14 259 482 1592 Mech. Wear at Tube Supports 18 11 1 OD Cracks at Tubesheet 17 20 27 20 Preservice, FO, Preventative 51 6 2 Circ. OD Cracks at Tubesheet 5 13 10 15 OD Volumetric - Various 2 ID Cracks in Tubesheet 4 3 OD Cracks at Dings 5 1 OD Cracks in Freespan _ 1 1 54 361 530 1635 Cumulative Plugging 652 1013 1543 3178 ,
Cumulative Percent 3.9% 6.0% 9.2% -1B.9%:..
'I (1) Axial unless noted otherwise a_ '8 ot-FPL 4
V St Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Background & SIG Condition Benchmark of Predicted (best estimate) vs. Observed Indications Mechanism Case Predicted Observed Axial ODSCC at Eggcrates Worst SG 928 1217 Axial ODSCC at Tube Dings All SGs 2 1 Axial ODSCC at Transition All SGs 43 16 Axial IDSCC below Transition All SGs 15 2 Circ. ODSCC at Transition All SGs 25 17 FPL St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Background & SIG Condition Probability of Burst (POB)
Mechanism SG A SIG B ODSCC' at E c029crats 0.0777 ODSCC at D)ings 0.00(Y O)SCC at Topofa-Tubcshect -0 Cumulatisv P0I3 0.0356
- Significant Axial Degradation Mechanisms
- Cycle 15 Length for 10% POB Criterion - 17.4 EFPM
- Cycle 15 Length for 5% POB Criterion - 16.2 EFPM _ o
- Planned Cycle 15 Length is -14.5 EFPM ,
FPLI S
-i St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Background & S/G Condition In Situ Pressure Testing SL2-9 Through SL2-15
- 73 Total Indications (19 at SL2-15)
'LAxial ODSCC at TTS
' Axial IDSCC below TTS Circ ODSCC at TTS
' Circ IDSCC at TTS OD Volumetric TTS
- No Leakage or Burst 5 .- - Bl y . ". . .
- 11 FPL St. Lucie Unit 2- Steam Generator Inspection Planning for SL2-16 SL2-16 Inspection Scope
- Visual Examination of All Tube Plugs
- Bobbin Probe All Active Tubes Screen Dings <5 Volts in Straight Sections
' Full Length Row 3-140, Straight Length Row 1-2
- Plus Point Probe 100% Hot Leg Top of Tubesheet (+3" /-13")
Cold Leg Periphery Tubes (+3"/-2")
20% Row 1-2 U-bends (A-23, B-25) 20% Wear at Vertical Straps (A-86, B-58)
' .00% Wear at Eggcrates, HL & CL Diagonals (A-274,;B-202)
Full Tubesheet if No Tube Expansion (A-21,-B-1) 1-FPL 6
I St Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 SL2-16 Inspection Scope (con't)
- Plus Point Probe for Dings SGA SGB
' All Dings Hot Leg Tubesheet to 1st Support 68 78
' All Dings >5 volts 1st Support to HL Bend 57 80 All Dings in HL & CL Square Bends Row 19-140 90 68
' All Dings >5 volts in Horizontal Run Row 19-140 71 102
' All Dings in Rows 1-18 U-Bends 113 89
' 20% Dings >5 volts CL Tubesheet to CL Bend 17 23 416 440
- In Situ Testing Based on Industry Screening Guidance FPL - 13 St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Projected Tube Plugging Pr~dictdcNumbir PrchictedNurnm.r of Indliations at of Tub.. R*paired EO :i5 atE FOCIS Mochanismitocation SIG A SIG B SIG A SIC B Axial ODS('C at ls '.cratr Sulqxirts ILtwer 5t 21_00 2178 145S 1257 BLkt Estinlatc 2561 2331 1556 1345 tUppcr954% 2722 2485 165.1 1434 Aexial ODSCC Near TTS 30 I0 30 10 ircuinfermntial ODSCC2at 171S I 20 15 20 ANial I DSCC fICAow TriS 5 , S 5 C.irunircrcntiiil iScc. tcibw rrs s 5 S 5 Axi¶,l Oi)SCC at Dings 5 S 5 Best Estimate Cumulative Repairs -3050 -3075 Current Tube Plugging Limit 2520 .;252 :
FPL 14 7
I St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Tube Sleeving Plans Westinghouse Alloy 800 Leak Limiting Sleeve
- 60-70% of Repairable Tubes are Candidates
- Maintain 30% Effective Tube Plugging Margin
- Contingency for 42% Tube Plugging
> Required Repairs Exceed Expectations
' Sleeving Field Effort Difficulties
- ' 15 FPL St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Operating Experience
- Continue Emphasis on Dings/Dents &
Anomalous Indications
- Foreign Object Damage
- Batwing Support Condition (Waterford)
- Fabrication Issues (Byron & Davis Besse)
- Tube to Tube Wear (Tube Sever)
' Susceptible Locations to be Reviewed by Lead Analysts
. -16 FPL 8
St. Lucie Unit 2 - Siteam Generator Inspection Plannin,g for SL2-16 Contingenc y Planning Issue or Inspection Item ContinQency Action Leaking Plug Replace as Necessary Crack in Row 1&2 U-bend Test 100% Affected Rows
& 20% Row 3, etc.
Crack in U-bend Wear Scar Test All (A-430, B-290)
Crack in Cold Leg Ding Test All (A-85, B-1 15)
Foreign Object Wear Bound FO Wear CL Expansion Transition Cracking Test 100% in Affected SG Freespan Cracking Validate Bobbin POD RCL Indications on Pull Out Scan Retest if >.35 Volts ,,,¢ <tws-7 17 FPL St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Generic Letter 2006-01 Submit LAR to Adopt TSTF-449 By May 31, 2006
> Replacement SG Program
> Original SG Program
- Include Sleeving Repair Method
- Include Tubesheet Inspection Provisions (C*)
- Administrative Controls
- Limit Pri-Sec Leakage to 108 gpd/SG
- Address Leakage Predictions for 1 7 Tubesheet & Sleeves 18 FPL ,es 9
I St. Lucie Unit 2 - Steam Generator Inspection Planning for SL2-16 Summary & Closing
- FPL Program Meets Industry Guidance
. Comprehensive Inspection Program
- Reasonable Assurance of Tube Integrity
- Compliance with Tech Specs & NRC Positions
- Amend License for TSTF-449
- Identify & Address Staff Concerns FPL 19 10