ML080810339

Meeting on March 18, 2008 (NON-Proprietary Version) Presentation (Tac No. MD8099)

ML080810339
Person / Time
Site:	Susquehanna
Issue date:	03/18/2008
From:	GE Healthcare, Susquehanna
To:	Office of Nuclear Reactor Regulation
vaidya B, NRR/DLPM, 415-3308
References
TAC MD8099
Download: ML080810339 (70)

Text

Susquehanna Steam Electric Station Extended Power Uprate Steam Dryer Update 1

Meeting Purpose

• Provide the current status of the Steam Dryer Project and review steam dryer design improvements.

• Discuss the schedule for Unit 1 start-up testing.

• Discuss the implementation of Unit 1 License Conditions:

- 2.C.(36)(a)1

- 2.C.(36)(a)3

- 2.C.(36)(a)4

- 2.C.(36)(a)5

- 2.C.(36)(b)1

- 2.C.(36)(b)2

- 2.C.(36)(b)4

- 2.C.(36)(b)7 Provide information on the Unit 1 Steam Dryer Installation Interference 2

Todays Discussion Steam Dryer Project Status Unit 1 Start-up Schedule Main Steam Line Strain Gages Proposed Start-Up Data Package Format Review of New Steam Dryer Design Hammer Test Status Unit 1 Steam Dryer Instrumentation Unit 1 Steam Dryer Installation Interference Post Start-Up Dryer Analysis 3

Steam Dryer Project Status 4

Unit 1 Steam Dryer Status Completed Activities

- All assembly complete with exception of lower skirt ring tie bar modification and seismic brackets .

- Hammer test.

- Dryer mounted instruments installed.

Remaining Work

- Complete lower skirt ring tie bar modification.

- Dryer leveling.

- EDM reactor vessel lugs.

- Test fit dryer.

- Machine and install seismic brackets.

- Install steam dryer.

- Route instrument leads through vessel head instrument nozzle.

5

Unit 2 Steam Dryer Status

• Components under construction at GE Custom Fabrication

• Shop fabrication to be complete in late June of 2008.

• Ship to Susquehanna by mid July of 2008.

6

Unit 1 Start-Up Schedule 7

Unit 1 Start-up Schedule Activity Date Enter Mode 2 April 12 Breaker Closed April 15 MSIV Closure Test (72.2% Power) April 18 MSIV Closure Test (76.9% Power) April 19 MELLLA Testing April 20 thru April 27 3489 MWth Plateau Review April 28 Start Ramp to 3611 MWth Plateau April 29 3611 MWth Plateau Review May 1 Start Ramp to 3733 MWth May 6 Condensate Pump Trip May12 Plateau Review May 13 8

Main Steam Line Strain Gages 9

Main Steam Line Instrumentation

• 32 strain gages installed.

• Two locations per steam line.

• 4 strain gages per location.

• Data usage:

- Qualitative evaluation of acoustic spectrum.

- Evaluation of proposed limit curves.

- Collect data for ACM benchmarking.

- Collect data for SUPF validation.

10

Main Steam Line Strain Gauge Locations Steam Dome L1 Upstream Strain Gage Location L2 L3 Downstream Strain Gage Location Dead-Headed Leg L4 Steam Flow Direction Length MSL A (ft) MSL B (ft) MSL C (ft) MSL D (ft)

Distance from steam dome to 22.8 22.8 22.8 22.8 upstream SG location (L1)

Distance from steam dome to 52.7 49.6 48.3 52.6 downstream SG location (L2)

Distance from steam dome to dead- 56.7 NA NA 56.7 headed leg location (L3)

Length of dead-headed leg (L4) 24.1 NA NA 24.2 11

Proposed Start-Up Data Package Format License Conditions 2.C.(36)(a)1, 2.C.(36)(a)3 and 2.C.(36)(a)5 12

acceptable limits Sensor ID % of Level 1  % of Level 2 Criteria Criteria A4 S1 S2 S3 S4 S5 S6 S7 S8 S9 13

Typical Power Ascension Trend Plots for Strain Gages (S1 to S9)

With Level-1 and Level-2 Acceptance limits 100 90 80 Level 1 70 60 Level 2 Microstrain 50 40 30 20 10 0

0 10 20 30 40 50 60 70 80 90 100

% Pow er 14

Typical Power Ascension Trend Plots for Accelerometer A4 With Level-1 and Level-2 Acceptance limits 35 30 Level 1 25 Level 2 20 G's 15 10 5

0 0 10 20 30 40 50 60 70 80 90 100

% Pow er 15

Typical Frequency Spectrum Monitoring Curves for Strain Gages (S1 to S9), Accelerometer (A4) 16

Steam Dryer Data Log Sheets Date/Time 2/6/2008 7:00 Computer ID Value Units Thermal Power (Instantaneous) u01.nba01 3484.78 MWth Thermal Power (15 min Ave.) u01.nba101 3484.43 MWth Electrical Power u01.tra178 1199.08 Mwe Total Core Flow u01.tra026 100.07 M lbm/hr Recirc Loop Flow A u01.tra028 50.21 M lbm/hr Recirc Loop Flow B u01.tra029 49.49 M lbm/hr Core Plate D/P u01.tra027 14.71 PSI Steam Flow Line A u01.tra153 3.66 M lbm/hr Steam Flow Line B u01.tra154 3.50 M lbm/hr Steam Flow Line C u01.tra155 3.83 M lbm/hr Steam Flow Line D u01.tra156 3.67 M lbm/hr Total Steam Flow u01.tra097 14.52 M lbm/hr 17

Feedwater Flow u01.tra098 14.51 M lbm/hr Feedwater Temperature Line A u01.tra102 391.48 °F Feedwater Temperature Line B u01.tra103 388.52 °F Feedwater Temperature Line C u01.tra104 391.10 °F Rx Dome Pressure Narrow Range u01.tra208 1037.96 PSIG Rx Dome Pressure Wide Range u01.tra209 1039.19 PSIG Steam Dome Temperature u01.nfa05 551.11 °F Recirculation Pump A Speed vm.1p401a/1a_rrp_tac 1421.00 RPM Recirculation Pump B Speed vm.1p401b/1b_rrp_tac 1424.00 RPM Recirculation Pump A Power u01.nrj51 3.63 MWe Recirculation Pump B Power u01.nrj52 3.64 MWe CRD Cooling Header Flow u01.nef03 64.46 GPM CRD System Flow u01.nef01 63.54 GPM CRD System Temperature u01.ndt05 125.42 °F Bottom Head Drain Temp u01.tra206 530.75 °F 18

Reactor Water Level Narrow Range u01.tra142 33.64 Inches H2O Reactor Water Level Narrow Range u01.nfl02 33.98 Inches H2O Reactor Water Level Narrow Range u01.nfl03 33.74 Inches H2O Reactor Water Level Wide Range u01.tra143 33.72 Inches H2O Recirculation Pump A Vane Passing Freq. n/a 118.42 Hz Recirculation Pump B Vane Passing Freq. n/a 118.67 Hz Recirculation Pump A Motor Frequency n/a 47.85 Hz Recirculation Pump A Motor Frequency n/a 47.95 Hz 19

Review of New Steam Dryer Design 20

Replacement Steam Dryer Analysis

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21

Fabrication Improvements

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22

Hood Joint Tee 23

Hood End Panel 24

Drain Trough Side Plates 25

Hood Support and Bank Divider Plate Assembly 26

New Dryer Trans Brace 27

Bank Cap and Tie Bar 28

Dryer Constructed in Halves 29

Support Ring Splice Bar and Drain Channel Tee 30

Final Fabrication on Refueling Floor 31

Completed Steam Dryer 32

Hammer Test Results 33

Hammer Test Status 34

Preliminary Test Summary 35

Tank and Test Frame 36

Tripod Support 37

Photograph of Dryer, 90° Side 38

Unit 1 Steam Dryer Instrumentation 39

Steam Dryer Instrumentation 40

Steam Dryer Sensor Summary 41

Elevation Ninety Degree View 42

Elevation Zero Degree View 43

Elevation 270 Degree View 44

Dryer Top View 45

Cover Plate Instrumentation 46

Hood Pressure Sensors and Strain Gages 47

Instrument Mast 48

Instrument Mast 49

Unit 1 Steam Dryer Installation Interference 50

Issue 51

Interference Pictures 0-deg Guide Rod 180-deg Guide Rod 52

Probable Interference Contributing Factors 53

Lower Support Ring Deflection 54

Modification 55

Modification 56

New Splice Bar 57

Original Splice Bar 58

New Splice Bar Installation 59

Additional Engineering Actions 60

Post Start-Up Dryer Analysis License Conditions 2.C.(36)(a)4, 2.C.(36)(a)5, 2.C.(36)(b)1, 2.C.(36)(b)2, 2.C.(36)(b)4, and 2.C.(36)(b)7 61

Dryer Acceptance Limits 62

Dryer Acceptance Limits, contd 63

Start-Up Analysis Scenarios 64

Loss of Instruments: Instruments Placement Selected to Provide Redundancy 65

Loss of Instruments: Instruments Placement Selected to Provide Redundancy 66

Loss of Instruments 67

Frequency Response Monitoring Curves 68

Dryer Acceptance Limits are Challenged or Frequency Response Significantly Different 69

Post Start-up Steam Dryer Margin Analysis 70