CNL-18-112, Extended Power Uprate - Flow Induced Vibration Summary Report

Extended Power Uprate - Flow Induced Vibration Summary Report

ML18257A103
Person / Time
Site:	Browns Ferry
Issue date:	09/13/2018
From:	Henderson E Tennessee Valley Authority
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
CAC MF6741, CAC MF6742, CAC MF6743, CNL-18-112
Download: ML18257A103 (15)

Text

Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402 CNL-18-112 September 13, 2018 10 CFR 50.4 10 CFR 2.390 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Browns Ferry Nuclear Plant, Unit 3 Renewed Facility Operating License No. DPR-68 NRC Docket No. 50-296

Subject:

Extended Power Uprate - Unit 3 Flow Induced Vibration Summary Report

Reference:

NRC Letter to TVA, Browns Ferry Nuclear Plant, Units 1, 2, and 3 -

Issuance of Amendments Regarding Extended Power Uprate (CAC Nos. MF6741, MF6742, and MF6743), dated August 14, 2017 (ML17032A120)

In accordance with 10 CFR 50.92, the NRC issued the reference letter containing License Amendment Nos. 299, 323 and 283 to the Browns Ferry Nuclear Plant (BFN) Units 1, 2 and 3 Renewed Facility Operating Licenses (RFOLs) to increase the authorized maximum power level from 3458 megawatts thermal (MWt) to 3952 MWt. This change to power level is considered an extended power uprate (EPU).

The amended RFOLs contain specific license conditions that control the monitoring, evaluating, and taking prompt action in response to potential adverse flow effects as a result of the EPU on plant structures, systems, and components during initial EPU power ascension. This letter satisfies BFN Unit 3 License Condition 2.C(14)(b)5 by providing, within 90 days following completion of EPU power ascension testing, a flow induced vibration summary report for certain specified BFN Unit 3 piping and valve locations, including the vibration data and evaluation of the measured data compared to acceptance limits. BFN Unit 3 completed EPU power ascension testing for vibration monitoring of piping and valves on July 13, 2018. As a result, the due date for this submittal is October 11, 2018.

U. S. Nuclear Regulatory Commission CNL-18-112 Page 2 September 13, 2018 There are no new regulatory commitments associated with this submittal. If there are any questions or if additional information is needed, please contact Edward Schrull at (423) 751-3850.

Respectfully, YJJ

~~

E. K. Henderson Director, Nuclear Regulatory Affairs

Enclosure:

Browns Ferry Nuclear Plant Unit 3 Flow Induced Vibration Summary Report cc (Enclosure):

NRC Regional Administrator - Region II NRC Senior Resident Inspector - Browns Ferry Nuclear Plant State Health Officer, Alabama State Department of Public Health

Enclosure Browns Ferry Nuclear Plant Unit 3 Flow Induced Vibration Summary Report

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0.065 0.070 0.074 0.090(0.116)(2) 0.136 Z

0.066 0.073 0.078 0.089(0.328)(2) 0.386 Resultant(1) 0.104 0.119 0.127 0.140(0.412)(2) 0.485 X

0.028 0.032 0.043 0.110(0.140)(2) 0.165 Y

0.033 0.038 0.063 0.140(0.182)(2) 0.214 Z

0.067 0.071 0.083 0.100(0.133)(2) 0.157 Resultant(1) 0.080 0.087 0.113 0.200(0.266)(2) 0.313 X

0.032 0.033 0.038 0.110(0.141)(2) 0.166 Y

0.026 0.027 0.037 0.140(0.183)(2) 0.215 Z

0.063 0.058 0.071 0.100(0.133)(2) 0.157 Resultant(1) 0.075 0.072 0.089 0.200(0.267)(2) 0.314 X

0.072 0.072 0.082 0.200(0.318)(2) 0.374 Y

0.117 0.126 0.148 0.130(0.199)(2) 0.234 Z

0.051 0.054 0.062 0.130(0.199)(2) 0.234 Resultant(1) 0.147 0.155 0.180 0.270(0.424)(2) 0.499 X

0.05 0.06 0.08 0.59 0.69 Y

0.06 0.07 0.18 0.77 0.90 Z

0.05 0.06 0.08 0.34 0.40 Resultant(1) 0.09 0.11 0.21 1.03 1.20 X

0.11 0.13 0.14 0.59 0.69 Y

0.26 0.36 0.40 0.77 0.90 Z

0.09 0.11 0.12 0.34 0.40 Resultant(1) 0.30 0.40 0.44 1.03 1.20 X

0.11 0.13 0.14 0.59 0.69 Y

0.52 0.63 0.73 0.77 0.90 Z

0.22 0.25 0.28 0.34 0.40 Resultant(1) 0.58 0.69 0.79 1.03 1.20 X

0.06 0.07 0.08 0.59 0.69 Y

0.07 0.08 0.14 0.77 0.90 Z

0.10 0.11 0.12 0.34 0.40 Resultant(1) 0.14 0.15 0.20 1.03 1.20

1. ThemeasuredaccelerationsareacceptableiftheresultantofthemeasuredaccelerationsislessthantheLevel1 limit.

Level2Limit (grms)

2. TheLevel2limitcanbeincreasedtothevalueinparenthesesifanSRVstandpiperesonancenear110Hzisnot occurring.

RCICSteamSupplyLine

InboardIsolationValve (FCV712)

HPCISteamSupplyLine

InboardIsolationValve (FCV732)

MSLineASRV (PCV14)

MSLineBSRV (PCV122)

MSLineCSRV (PCV134)

MSLineDSRV (PCV1180)

Description Direction MeasuredAcceleration(grms)

Level1Limit (grms)

MSLineAInboard

IsolationValve (FCV114)

MSDrainHeaderInboard

IsolationValve (FCV155)

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3630MWt 3803MWt 3952MWt MainSteamLineB24" B125X 21 17 18(3) 32 40 MainSteamLineD24" D125X 29 29 24 114 142 L75Y 14 15 14 133 166 L75Z 4

5 8

158 198 A310X (4)

(4)

(4) 26 32 A310Y (4)

(4)

(4) 121 151 A310Z (4)

(4)

(4) 99 124 XZResultant(1)

(4)

(4)

(4) 102 128 C290X 11(5) 12(5) 13(5) 67 84 C290Y 19 20 17 101 126 C290Z 37 31 29 193 241 XZResultant(1) 39 33 32 204 255 M28X 22 16 15 85 106 M28Z 57 54 54 53 66 XZResultant(1) 61 56 56 100 125 M28X 23 23 18 85 106 M28Z 30 22 21 53 66 XZResultant(1) 38 32 28 100 125 F37X 47 42 36 215 269 F37Z 24 23 22 105 131 G22X 28 21 20 66 82 G22Y 51(6) 56(6) 60(6) 52 65 XYResultant(1) 58 60 63 84 105 ControlValve41"Line G99X 31 23 16 76 95 ControlValve32.5"Line G57Z 18(7) 20(7) 22(7) 43 54

3. Projectedfrommeasuredvalueof17milspkpkat96.2%power(3803MWt).

4. See"EvaluationofResults"section.

5. Projectedfrommeasuredvalueof10milspkpkat87.5%power(3458MWt).

6. Projectedfrommeasuredvalueof46milspkpkat87.5%power(3458MWt).

7. Projectedfrommeasuredvalueof15milspkpkat83.1%power(3285MWt).

2. ThemeasureddisplacementsintheXandYdirectionsareacceptableiftheresultantofthemeasured displacementsintheXandYdirectionsislessthantheLevel1limit.

Level2Limit

(milspkpk)

MainSteamLineC28" MainSteamLineC1"Line MainSteamLineD1"Line StopValve2 ControlValve11"Line

1. ThemeasureddisplacementsintheXandZdirectionsareacceptableiftheresultantofthemeasured displacementsintheXandZdirectionsislessthantheLevel1limit.

Description Location

Direction MeasuredDisplacement(milspkpk)

Level1Limit

(milspkpk)

BypassValves8"Line MainSteamLineA28"

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7 6

78 97 142AY 11 11 10 58 73 132AZ 13 11 7

258 323 RFP1C18"Discharge 80AY 5

5 4

62 78 215BX 6

6 5

51 64 215BZ 12 16 12 110 137 95BX 12 14 11 30 37 95BY 7

8 7

26 33 30AY 2

2 2

23 29 30AZ 7

8 6

21 26 135BX 6

8 8

25 31 135BZ 16 18 15 22 28 FW21X 19 39 34 71 89 FW21Z 64 55 50 71 89 FW31X 5

4 4

128 160 FW31Z 3

3 2

59 74 FW42X 8

7 9

82 103 FW42Z 42 50 46 150 187 FW52X 6

7 6

82 103 FW52Z 39 33 34 150 187 FW55Y 4

4 3

26 32 FW55Z 10 8

8 32 40 FWItemNo.42 FWItemNo.52 FWItemNo.55 Level2Limit

(milspkpk)

HeaterStringA218"Line HeaterStringA118"Line HeaterStringC118"Line RFW24"DischReturn FWItemNo.21 FWItemNo.31 Description Location

Direction MeasuredDisplacement(milspkpk)

Level1Limit

(milspkpk)

RFP1A18"Discharge RFP1B18"Discharge

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3630MWt 3803MWt 3952MWt 50X 17 24 23 105 131 50Y 25 26 28 118 148 50Z 24 31 29 158 198 BB25AX 10 11 11 48 60 BB25AY 13 14(1) 15(1) 40 50 BB25AZ 11 12 14 38 47 380385Y 9

6 5

143 179 380385Z 10 8

8 101 126 110130X 33 32 23 42 53 110130Y 2

2 2

34 42 110130Z 43 44 41 58 73 CB37X 4

5 5

146 183 CB37Y 5

5 5

86 107 CB37Z 5

5 5

79 99 HA02X 11 11 12 87 109 HA02Y 5

5 5

142 178 HA02Z 3

2 3

105 131 X247X 12 13 31 58 72 X247Y 11(2) 12(2) 13(2) 61 76 X247Z 14 16 16 34 42

1. Projectedfrommeasuredvalueof13milspkpkat91.9%power(3630MWt).

2. Projectedfrommeasuredvalueof10milspkpkat87.5%power(3458MWt).

HD01 HD02 ES01 ES02 ES03 Level2Limit

(milspkpk)

Description Location

Direction MeasuredDisplacement(milspkpk)

Level1Limit

(milspkpk)

CD01 CD02

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3630MWt 3803MWt 3952MWt 15R 0.2 0.2 0.2 3.4 4.2 15T 0.2 0.2 0.2 1.1 1.4 3A/3BR 0.2 0.2 0.2 1.8 2.2 3A/3BT 0.2 0.2 0.2 1.1 1.4 19BV 0.2 0.2 0.2 1.9 2.4 246R 0.1 0.1 0.2 2.1 2.6 246T 0.2 0.2 0.2 1.0 1.2 50Y 0.0 0.0 0.1 0.5 0.6 50Z 0.1 0.1 0.1 1.0 1.2 FWLoopA,NozzleA 9R 0.1(1) 0.1(1) 0.1(1) 1.7 2.1 28X 0.1 0.1 0.1 2.6 3.3 28Z 0.1 0.1 0.1 0.6 0.8 FWLoopB,NozzleF 9R 0.1 0.1 0.1 2.7 3.4 43R 0.1 0.1 0.2 1.6 2.0 43T 0.1 0.1 0.1 1.0 1.3

1. Projectedfrommeasuredvalueof0.1g'spkat87.5%power(3458MWt).

FWLoopB,NozzleD MSLineB MSLineC RPVHeadVent FWLoopA,NozzleB Description Location Direction MeasuredAcceleration(g'spk)

Level2Limit

(g'spk)

Level1Limit

(g'spk)

MSLineA