TASK 72-45-24-300-028 HPT Stage 2 Ring Segment And Vane Cluster - Weld Repair Cracks Adjacent To The Borescope Hole, Repair-028 (VRS3708)

DMC:V2500-A0-72-45-2401-05A-627A-C|Issue No:002.00|Issue Date:2018-08-01

Export Control

EAR Export Classification: Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3), except for the following Service Bulletins which are currently published as EAR Export Classification 9E991: SBE70-0992, SBE72-0483, SBE72-0580, SBE72-0588, SBE72-0640, SBE73-0209, SBE80-0024 and SBE80-0025.

Copyright

© IAE International Aero Engines AG (2001, 2014 - 2021) The information contained in this document is the property of © IAE International Aero Engines AG and may not be copied or used for any purpose other than that for which it is supplied without the express written authority of © IAE International Aero Engines AG. (This does not preclude use by engine and aircraft operators for normal instructional, maintenance or overhaul purposes.).

Applicability

All

Common Information

TASK 72-45-24-300-028 HPT Stage 2 Ring Segment And Vane Cluster - Weld Repair Cracks Adjacent To The Borescope Hole, Repair-028 (VRS3708)

Effectivity

FIG/ITEM

PART NO.

02-260

2A4562

02-420

2A2152

02-420

2A2152-001

02-420

2A2152-002

02-420

2A3282

02-420

2A3282-001

02-420

2A3302

02-420

2A3302-001

02-420

2A3452

02-420

2A3452-001

02-420

2A3842

02-420

2A3842-001

02-420

2A4082

02-420

2A4282

Material of component

PART IDENT

SYMBOL

MATERIAL

HP turbine stage 2 vane

-

Cast nickel alloy

General

Price and availability - Refer to IAE

The practices and processes referred to in the procedure by the TASK number are in the SPM.

NOTE

For more equipment and materials necessary to do this repair, refer to the SPM TASK 70-11-03-300-503, SPM TASK 70-23-05-230-501, SPM TASK 70-31-13-310-501, SPM TASK 70-37-00-370-501 and SPM TASK 70-37-01-370-501.

NOTE

To identify the consumable materials, refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
FileLOCALFile
Various stonesLOCALVarious stones
Hand grinderLOCALHand grinder
Welding equipmentLOCALWelding equipment
OvenLOCALOven
Standard induction heaterLOCALStandard induction heater

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 03-197 WELDING FILLER WIRELOCALCoMat 03-197
CoMat 03-287 WELDING FILLER WIRELOCALCoMat 03-287

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-45-24-230-066 Determine Location and Length of Cracks

      NOTE

      This weld repair is for cracks originating at the borescope boss hole surface. Cracks up to 0.050 in. (1.27 mm) may be repaired by this procedure. Cracks greater than 0.050 in. (1.27 mm) must be rejected.

      1. Do a local fluorescent penetrant inspection for cracks.

      1. Refer to SPM TASK 70-23-05-230-501 (high sensitivity).

    2. SUBTASK 72-45-24-350-099 Prepare Surface Before Welding

      CAUTION

      BORESCOPE HOLE DISTORTION, OUT OF ROUNDNESS AND EXCESS WELD REPAIR CAN CONTRIBUTE TO CRACKING.

      1. Completely V-groove full length of crack. If cracks go through from the outer surface, V-groove to half weld up. After this, V-groove from other surface until weld seam, as necessary.

      1. Use a hand held grinder.

    2. Weld up other side as usual. Keep material removal to a minimum to remove cracks.

    3. SUBTASK 72-45-24-110-065 Clean the HP Turbine Stage 2 Vane

      1. Clean the part.

      1. Refer to SPM TASK 70-11-03-300-503.

    4. SUBTASK 72-45-24-310-056 Weld Up Prepared Surfaces

      1. Weld up prepared areas. Use manual tungsten inert gas technique.

      1. Refer to Figure and Figure and the SPM TASK 70-31-13-310-501.

        Refer to Step for weld up of through cracks.

    5. SUBTASK 72-45-24-370-002 Heat Treat Component in an Oven After Weld

      1. Heat treat component.

    6. SUBTASK 72-45-24-110-066 Clean the HP Turbine Stage 2 Vane

      1. Clean the part.

      1. Refer to SPM TASK 70-11-03-300-503.

    7. SUBTASK 72-45-24-350-100 Blend Welded Areas to Initial Vane Contours

      1. Blend inner and outer vane surface to initial contours.

      1. Use hand held files or stones.

    8. SUBTASK 72-45-24-320-055 Restore Borescope Hole and/or Rivet Hole Diameters

      1. Machine borescope hole and/or affected rivet holes.

      1. Refer to Figure and Figure.

    9. SUBTASK 72-45-24-230-067 Examine the Machined Borescope Hole for Cracks

      1. Do a local fluorescent penetrant inspection for cracks.

        1. Refer to SPM TASK 70-23-05-230-501.

        1. Use high sensitivity.

          NOTE

          No cracks are permitted.

    10. SUBTASK 72-45-24-110-067 Clean the HP Turbine Vane

      1. Clean the part.

      1. Refer to SPM TASK 70-11-03-300-503.

    11. SUBTASK 72-45-24-280-064 Do the Post Repair Inspection

      1. Do a dimensional inspection of the machined areas.

      1. Refer to Figure and Figure.

    12. Figure: Repair Details and Dimensions

    Sheet 1

    Legend
    Repair Details and Dimensions

    Sheet 1

    Close

    Figure: Repair Details and Dimensions

    Sheet 2

    Legend
    Repair Details and Dimensions

    Sheet 2

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the effectivity table to add partnumber. (18VC123)

Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 03-197
Type:sp01
Supply Short Name:CoMat 03-197 WELDING FILLER WIRE
Supply Name:CoMat 03-197 WELDING FILLER WIRE
Specification Groups:
Doc NumberType
MSRR9500/215HASTELLOY X
OMAT:3/165AMS 5798
OMAT:3/165
Suppliers:
ManufacturerRemarks
LOCAL
07098
IE508
0B491
2R602
36346
55596
57965
58401
80357
IE306
K6835
1GD26
Manufacturer Code:LOCAL
Supply Number:CoMat 03-287
Type:sp01
Supply Short Name:CoMat 03-287 WELDING FILLER WIRE
Supply Name:CoMat 03-287 WELDING FILLER WIRE
Specification Groups:
Doc NumberType
INCONEL 625 AMS 5837 AMS 5837
Suppliers:
ManufacturerRemarks
LOCAL
2R602
55596
58401
Manufacturer Code:LOCAL
Tool Number:File
Tool Name:File
Link not Found
Manufacturer Code:LOCAL
Tool Number:Oven
Tool Name:Oven
Manufacturer Code:LOCAL
Tool Number:Standard induction heater
Tool Name:Standard induction heater
Manufacturer Code:LOCAL
Tool Number:Various stones
Tool Name:Various stones
Manufacturer Code:LOCAL
Tool Number:Welding equipment
Tool Name:Welding equipment