TASK 72-41-21-300-021 HPC Stage 12 Rotor Path Ring - Repair Surface Damage By Material Removal, Repair-021 (VRS6102)

DMC:V2500-A0-72-41-2130-00A-649A-C|Issue No:003.00|Issue Date:2019-05-01

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 72-41-21-300-021 HPC Stage 12 Rotor Path Ring - Repair Surface Damage By Material Removal, Repair-021 (VRS6102)

Effectivity

FIG/ITEM PART NO.

04-700

6A3656

04-700

6A4166

Material of component

RR

DESCRIPTION SYMBOL MATERIAL

HP compressor stage 12 rotor

QRK or

Nickel, cobalt steel

path ring

QTX

General

This Repair must only be done when the instruction to do so is given in 72-41-21 Inspection/Check.

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

Price and availability.

Refer to International Aero Engines.

NOTE

Equivalent materials or equipment can be used.

NOTE

More equipment and materials necessary to do this repair are given in SPM TASKS given below.
TASK 70-23-05-230-501.
TASK 70-35-03-300-501.

NOTE

To identify the consumable materials, refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Penetrant Crack Test EquipmentLOCALPenetrant Crack Test Equipment
Workshop inspection equipmentLOCALWorkshop inspection equipment

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 05-106 ABRASIVE STONEK6835CoMat 05-106
CoMat 05-110 EMERY POLISHING PAPERLOCALCoMat 05-110
CoMat 05-111 EMERY POLISHING PAPER06565CoMat 05-111

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-21-110-120 Clean the Stage 12 Ring

      1. Chemically clean.

    2. SUBTASK 72-41-21-230-094 Do a Crack Test

      1. Do a penetrant crack test.

    3. SUBTASK 72-41-21-350-077 Remove the Damaged Areas

    1. Refer to Figure.

      2. Remove the damaged material, as necessary. Do not remove more than is necessary.

      1. Refer to SPM TASK 70-35-03-300-501.

      3. The diameter of the repaired areas is to be 50 times the depth.

      4. The maximum depth of the repaired areas is to 0.005 in. (0.13 mm).

      3. Make smooth the repaired areas.

      1. Refer to SPM TASK 70-35-03-300-501.

      3. Make sure all damage marks are completely removed and the areas made smooth into the adjacent material.

      4. Polish the areas.

      1. Refer to SPM TASK 70-35-03-300-501.

      3. Polish the repaired areas to remove the scratches and to give a smooth surface finish.

    4. SUBTASK 72-41-21-220-225 Examine the Repaired Areas

    1. Refer to Figure.

      2. Make a visual inspection of the repaired areas and measure the depth of the repaired areas.

      1. Make sure the maximum depth of the repaired area is not more than 0.005 in. (0.13 mm).

      2. Use workshop inspection equipment.

    5. SUBTASK 72-41-21-230-095 Do a Crack Test

      1. Do a penetrant crack test of the damaged areas.

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

      2. Use penetrant crack test equipment.

      3. Cracks are not permitted.

    6. Figure: Repair details and dimensions

    Repair details and dimensions

    Figure: Apply the surface protection

    Apply the surface protection

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the procedure to delete surface protection procedure. (18VG011)

Manufacturer Code:06565
Enterprise Name:SAINT-GOBAIN ABRASIVES
BU Name:SAINT-GOBAIN ABRASIVES
P.O. Box:808
City:TROY
State:NY
Zip Code:12181
Country:USA
Phone Number:1-518-266-2200
Fax Number:1-518-266-2342
Internet:www.saintgobain.com
Manufacturer Code:K6835
Enterprise Name:MED-LAB LTD
BU Name:MED-LAB LTD
Street:COPELAND ST
City:DERBY
Zip Code:DE1 2PU
Country:GREAT BRITAIN
Phone Number:44-1332-349094
Fax Number:44-1332-371237
Email:sales@med-lab.co.uk
Internet:www.med-lab.co.uk
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:K6835
Supply Number:CoMat 05-106
Type:sp01
Supply Short Name:CoMat 05-106 ABRASIVE STONE
Supply Name:CoMat 05-106 ABRASIVE STONE
Specification Groups:
Doc NumberType
(SS-S-736/2/26) (A-A-3068/2-26)SQUARE FINE SS-S-736 TYPE II CLASS A1
Suppliers:
ManufacturerRemarks
K6835
KC1D9
Manufacturer Code:X111X
Supply Number:CoMat 05-110
Type:sp01
Supply Short Name:CoMat 05-110 EMERY POLISHING PAPER
Supply Name:CoMat 05-110 EMERY POLISHING PAPER
Specification Groups:
Doc NumberType
DISCONTINUED
Suppliers:
ManufacturerRemarks
X111X
Manufacturer Code:44197
Supply Number:CoMat 05-111
Type:sp01
Supply Short Name:CoMat 05-111 EMERY POLISHING PAPER
Supply Name:CoMat 05-111 EMERY POLISHING PAPER
Specification Groups:
Doc NumberType
FEPA GRIT SIZE P280 OR P240 EMERY POLISHING PAPER OR ALUMINUM OXIDE ABRASIVE PAPER
Suppliers:
ManufacturerRemarks
44197
K6835
KC1D9
LOCAL
Link not Found
Manufacturer Code:LOCAL
Tool Number:Workshop inspection equipment
Tool Name:Workshop inspection equipment