RA-20-0082, Submittal of 180-Day Steam Generator Tube Inspection Report

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Submittal of 180-Day Steam Generator Tube Inspection Report
ML20099K699
Person / Time
Site: Harris Duke Energy icon.png
Issue date: 04/08/2020
From: Riley K
Duke Energy Progress
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
RA-20-0082
Download: ML20099K699 (8)
v • d • e


Text

Kevin P. Riley

( ~ DUKE Nuclear Support Services Manager ENERGY. Harris Nuclear Plant 5413 Shearon Harris Rd New Hill, NC 27562-9300 984 229.2124 10 CFR 50.4 April 8, 2020 Serial: RA-20-0082 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington , DC 20555-0001 Shearon Harris Nuclear Power Plant, Unit 1 Docket No. 50-400/Renewed License No. NPF-63 Subject; 180-Day Steam Generator Tube Inspection Report Ladies and Gentlemen:

In accordance with the Technical Specifications (TS) of Shearon Harris Nuclear Power Plant, Unit 1 (HNP), Duke Energy Progress, LLC, submits the attached 180-Day Steam Generator Inspection Report for HNP. This report has been prepared in accordance with TS 6.9.1.7, "Steam Generator Tube Inspection Report," and provides the complete results of HNP Refueling Outage No. 22.

This letter contains no new regulatory commitments.

Please address any questions regardrng this matter to Dennis Earp at 984-229-2673.

Sincerely, Kevin P. Riley

Enclosure:

180-Day Steam Generator Tube Inspection Report cc: J. Zeiler, NRG Sr. Resident Inspector, HNP T. Hood, NRG Project Manager, HNP L. Dudes, NRG Regional Administrator, Region II

Kevin P. Riley Nuclear Support Services Manager Harris Nuclear Plant 5413 Shearon Harris Rd New Hill, NC 27562-9300 984.229.2124 10 CFR 50.4 April 8, 2020 Serial: RA-20-0082 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 Shearon Harris Nuclear Power Plant, Unit 1 Docket No. 50-400/Renewed License No. NPF-63

Subject:

180-Day Steam Generator Tube Inspection Report Ladies and Gentlemen:

In accordance with the Technical Specifications (TS) of Shearon Harris Nuclear Power Plant, Unit 1 (HNP), Duke Energy Progress, LLC, submits the attached 180-Day Steam Generator Inspection Report for HNP. This report has been prepared in accordance with TS 6.9.1.7, Steam Generator Tube Inspection Report, and provides the complete results of HNP Refueling Outage No. 22.

This letter contains no new regulatory commitments.

Please address any questions regarding this matter to Dennis Earp at 984-229-2673.

Sincerely, Kevin P. Riley

Enclosure:

180-Day Steam Generator Tube Inspection Report cc: J. Zeiler, NRC Sr. Resident Inspector, HNP T. Hood, NRC Project Manager, HNP L. Dudes, NRC Regional Administrator, Region II

U.S. Nuclear Regulatory Commission HNP-20-0082 Enclosure SHEARON HARRIS NUCLEAR POWER PLANT, UNIT NO. 1 DOCKET NO. 50-400/RENEWED LICENSE NO. NPF-63 Enclosure 180-Day Steam Generator Tube Inspection Report (6 pages including cover)

Harris Nuclear Plant HNP1 RFO122 Steam Generator Tube Inspection Report Pursuant to Harris Technical Specification 6.9.1.7 the following information is provided:

a. The scope of inspections performed on each SG For all three steam generators: Full length bobbin probe inspections of all tubes. Top of the tubesheet array probe inspections around the periphery extending five tubes into the bundle. Array probe special interest locations including 80 tubes in each steam generator both legs at top of tubesheet to flow distribution baffle for the chemistry excursion.
b. Degradation mechanisms found Degradation found included tube support plate (TSP) wear.
c. Non-destructive examination techniques utilized for each degradation mechanism The Non-destructive examination techniques utilized bobbin coil and array probes for the detection of wear. The array probe was utilized to characterize wear indications.
d. Location, orientation (if linear), and measured sizes (if available) of service induced indications The complete listing for service-induced indications is attached.

Tubes with tube support plate wear SG 1A - 4 tubes/6 indications SG 1B - 4 tubes/4 indication SG 1C - 4 tubes/4 indication Total - 12 tubes/14 indications No other indications of wear were reported

e. Number of tubes plugged during the inspection outage for each active degradation mechanism No tubes were plugged.
f. The total number and percentage of tubes plugged to date Steam Generator* 1A 1B 1C Total Plugs present prior to RFO122 5 4 3 12 Plugs added in RFO122 0 0 0 0 Total Plugs 5 4 3 12

% Plugged 0.08 0.06 0.05 0.06

  • There are 6307 tubes per generator.
g. The results of condition monitoring, including the results of tube pulls and in-situ pressure testing.

The cumulative EFPY for RFO119 was 12.22, RFO120 was 13.61, RFO121 was 15.0 and RFO122 was 16.39.

As of RFO122, the Harris Unit 1 steam generators had operated 15.11 EFPY since the first in-service inspection after replacement. In total, the Harris Unit 1 steam generators had operated 16.39 EFPY since replacement.

Condition monitoring was met for the tube to support plate degradation. All structural performance criteria were met with more than adequate margin projected through the next planned inspection at RFO125. The tube to support plate degradation could operate 14.5 EFPY before the structural and leakage criterion would be violated.

No degradation was detected in the plug visual or bowl cladding inspections.

No in-situ tests or tube pulls were performed.

FOSAR was performed at the top of tubesheet in all three steam generators. Three foreign objects were found in SG 1A. Two were legacy parts that were re-confirmed to be in their previously observed locations. The other part was a small piece of stellite material that was removed from the steam generator. One object was found in SG 1B. This part is acceptable for another three cycles of operation based on a wear evaluation. No metallic objects were found in SG 1C. The steam generators could operate no more than five cycles (7.5 effective full power years) between inspections for foreign objects and associated wear.

Sludge lancing was performed in all three steam generators. A total of fifty-eight (58) pounds of sludge were removed from all three steam generators. Thirteen (13) pounds of sludge was removed from the SG 1A. Ten (10) pounds of sludge was removed from SG 1B. Thirty-five (35) pounds of sludge was removed from SG 1C.

SG - A Attachment 1 - Service Induced Degradation Shearon Harris 1 RFO22 CQL 20191001 01/09/2020 16:40:23

+----+----+---------+----+----+----+-----+----+---------+---------+---------+---------+-------+----+-------+----+----+------+------+------+--+-----+---------+

l ROW COL VOLTS DEG IND PER CHN LOCN INCH1 INCH2 UTIL1 UTIL2 CRLEN CEG CRWID BEGT ENDT PDIA PTYPE CAL L IDX UTIL3l

+----+----+---------+----+----+----+-----+----+---------+---------+---------+---------+-------+----+-------+----+----+------+------+------+--+-----+---------+

l 3 12 .27 136 PCT 12 P5 06C .32 WAR 09H TEC .560 ZBAHS 37 C 7 l l l l 3 30 .22 116 PCT 10 P5 07C .42 WAR 09H TEC .560 ZBAHS 37 C 6 l l l l 107 78 .40 148 PCT 17 P5 07C .36 WAR 09C TEC .560 ZBAHS 37 C 8 l l l l 58 131 .40 98 PCT 17 P5 05C -.50 WAR 09C TEC .560 ZBAHS 37 C 9 l l 58 131 .31 140 PCT 14 P5 05C .38 WAR 09C TEC .560 ZBAHS 37 C 9 l l 58 131 .30 110 PCT 14 P5 04C .40 WAR 09C TEC .560 ZBAHS 37 C 9 l

+----+----+---------+----+----+----+-----+----+---------+---------+---------+---------+-------+----+-------+----+----+------+------+------+--+-----+---------+

l ROW COL VOLTS DEG IND PER CHN LOCN INCH1 INCH2 UTIL1 UTIL2 CRLEN CEG CRWID BEGT ENDT PDIA PTYPE CAL L IDX UTIL3l

+----+----+---------+----+----+----+-----+----+---------+---------+---------+---------+-------+----+-------+----+----+------+------+------+--+-----+---------+

Tubes: 4 Records: 6 1 ST Max

SG - B Attachment 1 - Service Induced Degradation Shearon Harris 1 H1R22 CQL 20191001 01/09/2020 16:40:23

+----+----+---------+----+----+----+-----+----+---------+---------+---------+---------+-------+----+-------+----+----+------+------+------+--+-----+---------+

l ROW COL VOLTS DEG IND PER CHN LOCN INCH1 INCH2 UTIL1 UTIL2 CRLEN CEG CRWID BEGT ENDT PDIA PTYPE CAL L IDX UTIL3l

+----+----+---------+----+----+----+-----+----+---------+---------+---------+---------+-------+----+-------+----+----+------+------+------+--+-----+---------+

l 2 1 .30 142 PCT 21 P5 06C .35 WAR 09C TEC .560 ZBAUC 21 C 10 l l l l 1 58 .12 131 PCT 11 P5 04C .41 WAR 09C TEC .560 ZBAUC 21 C 12 l l l l 58 131 .25 112 PCT 15 P5 05C .47 WAR TEC TEH .560 ZBAHS 21 H 10 l l l l 49 134 .19 87 PCT 12 P5 05C .49 WAR TEC TEH .560 ZBAHS 21 H 11 l

+----+----+---------+----+----+----+-----+----+---------+---------+---------+---------+-------+----+-------+----+----+------+------+------+--+-----+---------+

l ROW COL VOLTS DEG IND PER CHN LOCN INCH1 INCH2 UTIL1 UTIL2 CRLEN CEG CRWID BEGT ENDT PDIA PTYPE CAL L IDX UTIL3l

+----+----+---------+----+----+----+-----+----+---------+---------+---------+---------+-------+----+-------+----+----+------+------+------+--+-----+---------+

Tubes: 4 Records: 4 1 ST Max

SG - C Attachment 1 - Service Induced Degradation Shearon Harris 1 H1R22 CQL 20191001 01/09/2020 16:40:23

+----+----+---------+----+----+----+-----+----+---------+---------+---------+---------+-------+----+-------+----+----+------+------+------+--+-----+---------+

l ROW COL VOLTS DEG IND PER CHN LOCN INCH1 INCH2 UTIL1 UTIL2 CRLEN CEG CRWID BEGT ENDT PDIA PTYPE CAL L IDX UTIL3l

+----+----+---------+----+----+----+-----+----+---------+---------+---------+---------+-------+----+-------+----+----+------+------+------+--+-----+---------+

l 2 1 .27 94 PCT 13 P5 04C .34 WAR 09C TEC .560 ZBAHS 31 C 7 l l l l 1 86 .32 143 PCT 15 P5 05C .00 WAR 09C TEC .560 ZBAHS 31 C 8 l l l l 6 107 .20 120 PCT 10 P5 06C .38 WAR 09C TEC .560 ZBAHS 31 C 9 l l l l 1 138 .33 132 PCT 18 P5 08H .35 WAR 09H TEH .560 ZBAHS 20 H 7 l

+----+----+---------+----+----+----+-----+----+---------+---------+---------+---------+-------+----+-------+----+----+------+------+------+--+-----+---------+

l ROW COL VOLTS DEG IND PER CHN LOCN INCH1 INCH2 UTIL1 UTIL2 CRLEN CEG CRWID BEGT ENDT PDIA PTYPE CAL L IDX UTIL3l

+----+----+---------+----+----+----+-----+----+---------+---------+---------+---------+-------+----+-------+----+----+------+------+------+--+-----+---------+

Tubes: 4 Records: 4 1 ST Max

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