ML020910541

Welding Procedure Qualification Record for Control Rod Drive Nozzle Penetration Repairs

ML020910541
Person / Time
Site:	Oconee
Issue date:	03/20/2002
From:	Mccollum W Duke Energy Corp
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML020910541 (8)

Text

-Duke Duke Energy Energy.

Oconee Nuclear Station 7800 Rochester Highway Seneca, SC 29672 W. R. McCollum, Jr.

(864) 885-3107 OFFICE Vice President (864) 885-3564 FAX March 20, 2002 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001

Subject:

Oconee Nuclear Station, Units 1, 2, and 3 Docket Number 50-269, 50-269 and 50-287 Welding Procedure Qualification Record for Control Rod Drive Nozzle Penetration Repairs

Reference:

Letter, Duke to NRC, "Requests for Alternates to ASME Xl per 10 CFR 50.55a (a)(3) - Relief Requests 01-14, and Revision 1, 01-15, Revision 1 The referenced letter indicated that Duke Energy Corporation would provide the NRC with a welding Procedure Qualification Record (PQR) as described in Relief Request 01-14. A copy of the Framatome ANP (FRA) PQR is attached for your use. Note that the welding processes evaluated in the POR have been previously used in the repair of Unit 2 Reactor Vessel Head (RVH) and may be used for future control rod drive mechanism nozzle penetration repairs at Units 1, 2, and 3. Any such future usage of this PQR will be addressed in Requests for Alternates submitted per 10 CFR 50.55a (a)(3).

The POR test results identified a 5°F increase in the reference temperature (RTNDT) in the region of the weld for the material used in the dome of Oconee RVHs. FRA has evaluated the impact of the reference temperature increase to the RVH regions affected by the weld repairs and concluded that the Oconee RVHs continue to meet the fracture toughness requirements of 10 CFR 50, Appendix G. This new reference temperature is bounded by the RVH closure flange limit of +60'F and, as a consequence, the existing Technical Specification Pressure Temperature limits on the operation of the reactor vessel and reactor coolant system do not require revision.

If you have any questions regarding this submittal, please contact Robert Douglas at 864-885-3073.

Very Truly Yours, William R. McCoumJr Site Vice-President, Oconee Nuclear Station

U. S. Nuclear Regulatory Commission March 20, 2002

Attachment:

Framatome ANP document 55-PQR7183-01, "Procedure Qualification Record PQR7183-01," dated February 20, 2002.

xc w/att:

NRR Project Manager Regional Administrator, Region II Senior Resident Inspector South Carolina Dept. of Health & Environmental Control Page 2

PROCEDURE QUALIFICATION RECORD FRAMATOME ANP 55-PQ7183-01 PROCEDURE QUALIFICATION RECORD PQ7183-01 PREPARED BY:

REVIEWED BY:

APPROVED BY:

COGNIZAiW$ ENGINEER MANAGER, WEL13,0 SERVICES DATE:

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DATE:

DATE:

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February 20, 2002 Page 1 of 6 A

February 20, 2002 Page 1 of 6

A PROCEDURE QUALIFICATION RECORD FRAMATOME ANP 55-PQ7183-01 REVISION 00 01 RECORD OF REVISIONS DATE February 15, 2002 February 20, 2002 DESCRIPTION OF REVISION Original Issue Corrected toughness testing column headings (MLE & % shear)

February 20, 2002 Page 2 of 6 February 20, 2002 Page 2 of 6

APROCEDURE QUALIFICATION RECORD FRAMATOME ANP 55-PQ7183-01 February 20, 2002 Page 3 of 6 WPS USED FOR TEST:

WP3143/F43TBSC3-00 (Draft)

TYPE:

Machine WELDING PROCESS (ES):

GTAW JOINTS (QW-402) 60*

1.50-Alloy 600 3.6 25" R 1116.

0.625" SA-533 G r B Class1 BASE METALS (QW-403)

POSITIONS (QW-405)

Material Spec:

SA-533 to SB-1 68 Position of Groove:

3G Welding Progression Type & Grade:

Grade B Class 1 to UNS N06600 (Vertical):

Vertical up P-No. / Gr. No.

P-3 Group 3 to P-43 Other:

None Thickness of Coupon:

P-3 = 3.625", P-43 = 1.5" Diameter of Coupon:

N/A POSTWELD HEAT TREATMENT (QW-407)

Backing Materials:

N/A Soak Temperature:

None Other.

SA-533 material was stress relieved Time at Temperature:

N/A for 66 hrs. @ 1150°F before welding.

Heating/Cooling Rates:

N/A Weld cavity has 6" of BM restraint.

Other:

None SA-533 Heat Number B9064-4 SB-168 Heat Number:

34985-1B February 20, 2002 Page 3 of 6

A PROCEDURE QUALIFICATION RECORD FRAMATOME ANP 55-PQ7183-01 FILLER METALS (QW-404)

ELECTRICAL CHARACTERISTICS (QW-409)

Weld Metal Analysis A-No.:

N/A Electrode Type:

EWTh-2 Filler Metal F-No.:

43 Electrode Size:

1/8" diameter SFA Specification:

SFA-5.14 Pulse Current (Freq/Width):

All Layers (2.0 pps / 40%)

AWS Classification:

ERNiCrFe-7 (Code Case 2142)

Arc Voltage Control:

Automatic Maximum Pass Thickness:

Tst Layer - 0.080" Electrode Extension:

1/8" to 3/4" 2 "d Layer - 0.110" Current - Polarity:

DC-SP (Electrode Negative 3rd Layer - 0. 110" Layer Voltage:

Amps (P/B)

Travel (ipm)

Consumable Insert:

N/A 1

9.5 210_/_115 4.5 Deposited Thickness:

1.5" 2

9.8 280/120 4.0 Size of Filler Material:

.035" diameter 3

10.0 280/120 4.0 Heat Number-.

HT# NX2424JK Bal 10.0 310/130 3.8 Wire Feed Speed (ipm):

Heat Input (j/In) = (A x V x 60) / TS Layer Primary

Background

Layer Heat Input (J/In) 1st 40 30 1

19,380 2nd 60 50 2"d 27,048 3rd 60 50 3r 27,600 Balance 60 50 Balance 31,895 Maximum PREHEAT (QW-406)

TECHNIQUE (QW-410)

Preheat Temperature:

690 F Minimum String or Weave:

Stringer Interpass Temperature:

99.40 F Maximum Bead Width:

.270" to.420" Other:

Water backing was utilized on the Single/Multiple Electrode:

Single backside of the weld Single/Multipass (per side):

Multrpass GAS (QW-408)

Orifice / Cup / Nozzle Size:

1. 12 Purge Gas:

N/A Flow Rate:

N/A Peening:

None Shield Gas (CFH):

Argon Flow Rate:

35 CFH Bead Overlap:

50% +/- 25%

Trailing Gas:

N/A Flow Rate:

N/A Welding System:

Dimetrics MPC & F Head Gas Composition:

Welding Grade Argon Other:

None Other None February 20, 2002 Page 4 of 6 February 20, 2002 Page 4 of 6

A PROCEDURE QUALIFICATION RECORD FRAMATOME ANP 55-PQ7183-01 TflhILHNF TFT

LOW 17

MILS DROP SPECIMEN NOTCH SPECIMEN SIZE TEST TEMP.

FT. LBS LATERAL

% SHEAR WEIGHT NO.

LOCATION EXPANSION BREAK (Y / N)

BMDW-1 Base Metal 518" x 2" x 5Y

-400F N/A N/A N/A Yes BMDW-2 Base Metal 5/8" x 2" x 5"

-300F N/A N/A N/A No Break BMDW-3 Base Metal 5/8" x 2" x 5"

-30OF N/A N/A N/A No Break BMCVN-4 Base Metal

.394 x.394 x 2.165

+20*F 54 48 30 N/A BMCVN-5 Base Metal

.394 x.394 x 2.165

+20°F 46 43 30 N/A BMCVN-6 Base Metal

.394 x.394 x 2.165

+20°F 55 54 30 N/A BMCVN-2 Base Metal

.394 x.394 x 2.165

+200F 47 40 20 N/A BMCVN-3 Base Metal

.394 x.394 x 2.165

+200F 51 44 30 N/A BMCVN-7 Base Metal

.394 x.394 x 2.165

+30°F 59 53 20 N/A BMCVN-8 Base Metal

.394 x.394 x 2.165

+30°F 54 51 30 N/A BMCVN-9 Base Metal

.394 x.394 x 2.165

+30*F 61 47 20 N/A HAZCVN-1 HeatAffected

.394 x.394 x 2.165

+30OF 82 41 65 N/A HAZCVN-2 Heat Affected

.394 x.394 x 2.165

+30°F 95 48 70 N/A HAZCVN-8 Heat Affected

.394 x.394 x 2.165

+30°F 94 54 70 N/A HAZCVN-6 Heat Affected

.394 x.394 x 2.165

+350 F 95 49 45 N/A HAZCVN-7 Heat Affected

.394 x.394 x 2.165

+35°F 84 52 35 N/A HAZCVN-9 Heat Affected

.394 x.394 x 2.165

+35°F 95 50 55 N/A Comments: Base Material RT,,)T = -30 0F.

The average absorbed energy and mils lateral expansion values obtained for Heat Affected Zone specimens 6, 7 & 9, at test temperature of +35°F equals or exceeds the base material average absorbed energy and mils lateral expansion values for Base Metal specimens 7, 8 & 9 at a test temperature of +30 0F. When welding with this procedure 50F should be added to the RTNDT of the base material on which welding is performed.

All Charpy V-Notch specimens were removed at a depth of.750" transverse to the maximum working direction of the plate, which is equivalent to % the weld groove depth. All base metal specimens were machined with the V - notch perpendicular to the plate surface. All HAZ specimens were machined with their longitudinal axis inclined so that the V-notch would contain as much HAZ as possible.

All Base Metal Drop Weight specimens were also removed at a depth of.750".

FebrIIuarl 20I202PaeII o

Page 5 of 6 February 20, 2002

A PROCEDURE QUALIFICATION RECORD FRAMATOME ANP 55-PQ7183-01 TENSILE TESTS (QW-1 50)

WIDTH THICKNESS AREA ULTIMATE TOTAL ULTIMATE UNIT TYPE OF FAILURE &

SPECIMEN NO.

(inches)

(inches)

(sq. Inches)

LOAD (lb.)

STRESS (psi)

LOCATION RSTT-1 1.4406 0.74920 1.079297520 102,474 95.0 Ductile / Weld RSTT-2 1.5074 1

0.75065 1.131529810 104,612 92.5 Ductile I Weld Comments: Specimens machined per figure QW-462.1(a)

GUIDED BEND TESTS (QW-160)

SPECIMEN NO.

TYPE FIGURE NUMBER RESULTS TSB-1 Side Bend OW - 462.2 Acceptable TSB-2 Side Bend QW - 462.2 Acceptable TSB-3 Side Bend QW - 462.2 Acceptable TSB-4 Side Bend QW - 462.2 Acceptable Comments:

OTHER TESTS & INFORMATION:

Type of Test:

Metallographic examination of the HAZ of three (3) weld cross-section specimens was performed. No evidence of untempered martensite was observed per WMT&R report 2-21455.

WELDER (S) NAME:

Don VanSteen / Neil Whaley ID/STAMP NO:

V1I124/ W9849 TEST CONDUCTED BY:

Westmoreland Mechanical Testing LABORATORY TEST WMT&R 2-20928 NO:

We certify that the statements in this record are correct and that the test welds were prepared, welded and tested in accordance with the requirements of ASME Section XI and Code Case N-638.

Framatome ANP czo

[ L.

ComanyFRA-ANP Date~

Company Welding Engineer Date Febuar 2,i202lagI6 fl Page 6 of 6 February 20, 2002