TASK 72-45-23-200-004-A00 HPT Stage 1 Duct Segment - Examine, Inspection-004

DMC:V2500-A1-72-45-2301-00A-300A-C|Issue No:002.00|Issue Date:2015-11-01

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

V2500-A1

Common Information

TASK 72-45-23-200-004-A00 HPT Stage 1 Duct Segment - Examine, Inspection-004

Effectivity

FIG/ITEM PART NO.

01-060

2A1115

01-060

2A1945

General

This TASK gives the procedure for the inspection of the stage 1 HPT duct segment.

Fig/item numbers in parentheses in the procedure agree with those used in the IPC.

The policy that is necessary for inspection is given in the SPM TASK 70-20-00-200-501.

All the parts must be cleaned before any part is examined. Refer to TASK 72-45-23-100-000 (CLEANING-000).

All parts must be visually examined for damage, corrosion and wear. Any defects that are not identified in the procedure must be referred to IAE.

The procedure for those parts which must have a crack test is given in SUBTASK 72-45-23-230-054. Do the test before the part is visually inspected.

Do not discard any part until you are sure there are no repairs available. Refer to the instructions in Repair before a discarded part is used again or oversize parts are installed.

Parts which should be discarded can be held although no repair is available. The repair of a discarded part could be shown to be necessary at a later date.

All parts must be examined to make sure that all the repairs have been completed satisfactorily.

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

References

Refer to the SPM for data on these items.

Definitions of Damage, SPM TASK 70-02-02-350-501

Inspection of Parts, SPM TASK 70-20-00-200-501

Some data on these items is contained in this TASK. For more data on these items refer to the SPM.

Methods of Testing for Crack Indications

Chemical Processes

Surface Protection

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-45-23-230-054-001 Examine the Stage 1 HPT Duct Segments (01-060) for Cracks

    1. Refer to: Figure

    2. Clean the part. Refer to TASK 72-45-23-100-000 (CLEANING-000).

      3. Do the test for cracks on the part that is given below. Examine the metal surfaces at location 10. Do not examine the ceramic and metallic coated areas at location 8. Look carefully at all the attachment and shiplap lugs at locations 1, 2, 11, 12 and 13. Use the applicable penetrant procedure.

        PART IDENT

        TASK/SUBTASK

        Stage 1 HPT duct segment

        SPM TASK 70-23-02-230-501

        1. Cracked

        1. Reject

    2. SUBTASK 72-45-23-230-054-002 Examine the Stage 1 HPT Duct Segments (01-060) for Cracks

    1. Refer to: Figure

    2. Clean the part. Refer to the TASK 72-45-23-100-000 (CLEANING-000).

      3. Do the test for cracks on the part that is given below. Examine the metal surfaces at location 10. Do not examine the ceramic and metallic coated areas at location 8. Look carefully at all the attachment and shiplap lugs at locations 1, 2, 11, 12 and 13. Use the applicable penetrant procedure.

        PART IDENT

        TASK/SUBTASK

        Stage 1 HPT duct segment

        SPM TASK 70-23-02-230-501

        1. Cracked

        1. Reject

    3. SUBTASK 72-45-23-220-062 Examine the Stage 1 HPT Duct Segments (01-060) for Bent, Part Missing, Wear and Unwanted Material on the Attachment and Shiplap Lugs

    1. Refer to: Figure

      2. Examine the duct segment for bent, part missing, wear and unwanted material on the attachment and shiplap lugs.

        1. Wear.

          1. Up to 0.005in. (0.127 mm) at locations 1, 2, 4, 9 and 13

          1. Accept

          2. Other than (a)

          1. Reject

        2. Bent or part missing at locations 1, 2, 11, 12 and 13

        1. Reject

        3. All quantities of unwanted material at location 3 (4 positions each side) between the shiplap lugs

        1. Accept

    4. SUBTASK 72-45-23-220-063 Examine the Stage 1 HPT Duct Segments (01-060) for Unwanted Material in the Trailing Edge Cooling Slots

    1. Refer to: Figure

      2. Examine the duct segment at location 5 for unwanted material in the trailing edge cooling slots.

        1. Unwanted material

        1. Repair, VRS3463 TASK 72-45-23-300-005 (REPAIR-005)

    5. SUBTASK 72-45-23-220-064 Examine the Stage 1 HPT Duct Segments (01-060) for Corrosion, Dents, Erosion, Nicks and Pits on the Base Metal Surfaces

    1. Refer to: Figure

      2. Examine the duct segment at location 10 for corrosion, dents, erosion, nicks and pits on all the base metal surfaces.

        1. Corrosion, dents, erosion, nicks and pits

          1. All quantities up to 0.004in. (0.102 mm) in depth with no high metal

          1. Accept

          2. Other than (a)

          1. Repair, VRS3464 TASK 72-45-23-300-003 (REPAIR-003)

    6. SUBTASK 72-45-23-220-065 Examine the Stage 1 HPT Duct Segments (01-060) for Erosion, Rub, Metal Transfer, Cracks, Chips and Spalls on the Ceramic and Metallic Coatings

    1. Refer to: Figure and Figure

      NOTE

      The ceramic and metallic coating locations are shown at location 8.

      2. Examine the duct segment for chips, spalls and areas when you see a difference between the adjacent areas of the ceramic coating. Refer to Figure.

        1. If the metallic coating at location 7 shows through the ceramic coating at location 6

        1. Reject

        2. Chips, spalls and areas when you see a difference between the adjacent areas at location 7

          1. All quantities up to 25 percent of the surface areas

          1. Accept

          2. All quantities up to 0.125in. (3.175 mm) in diameter and 0.035in. (0.889 mm) in depth

          1. Accept

          3. Two areas up to 0.250in. (6.35 mm) in diameter and 0.035in. (0.889 mm) in depth

          1. Accept

          4. One area between 0.250 and 0.500in. (6.35 and 12.7 mm) in diameter and up to 0.035in. (0.889 mm) in depth. This does not include the area up to 0.250in. (6.35 mm) from the trailing edge

          1. Accept

          5. One area that is less than 0.250in. (6.35 mm) from the trailing edge and is up to 0.250in. (6.35 mm) in diameter and up to 0.035in. (0.889 mm) in depth

          1. Accept

          6. Other than (a) thru (e)

          1. Reject

      3. Examine the duct segment for metal transfer and cracks on the ceramic and metallic coating. Refer to Figure.

        1. Metal transfer at location 2

        1. Repair, VRS3543 TASK 72-45-23-300-010 (REPAIR-010)

        2. All quantities of a checkered crack pattern at location 2

        1. Accept

          NOTE

          Example of a checkered crack pattern is shown at location 1.

        3. Axial and circumferential cracks that are parallel to the top surface at location 3 (each side) and location 5 (each end)

        1. Reject

          NOTE

          Examples of the axial cracks are shown at location 4 and the circumferential cracks are shown at location 5.

      4. Examine the duct segment for erosion and rub at location 2. Refer to Figure.

        1. Erosion and rub.

          1. If the maximum radius that is temporarily marked on the surface is up to 12.70in. (322.58 mm)

          1. Accept

            NOTE

            The maximum radius of the duct segment is temporarily marked on the duct segment surface when the HP turbine case and vane assembly is disassembled.

          2. Other than (a)

          1. Reject

    7. Figure: Stage 1 HPT duct segment inspection locations

    Stage 1 HPT duct segment inspection locations

    Figure: Stage 1 HPT duct segment inspection locations

    Stage 1 HPT duct segment inspection locations

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised SPM task references to delete (dip only). (11VZ015)