TASK 72-45-23-200-004-E00 HPT Stage 1 Duct Segment - Examine, Inspection-004

DMC:V2500-A5-72-45-2301-00A-300A-C|Issue No:006.00|Issue Date:2018-02-01

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-A5

Common Information

TASK 72-45-23-200-004-E00 HPT Stage 1 Duct Segment - Examine, Inspection-004

Effectivity

FIG/ITEM

PART NO.

01-060

2A4169

01-060

2A4359

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 Step. Do the test before the part is visually examined.

A ** following repair referenced in this inspection indicates that the repair is not yet published in the current revision of the manual and the part must be rejected. Contact IAE for additional information concerning FAA approved repair date.

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 70-20-01-200-501

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 72-45-23-230-073 Examine the Stage 1 HPT Duct Segments (01-060) for Cracks

    1. Refer to Figure, Figure, Figure, Figure and Figure.

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

      3. Do the test for cracks on the part this is given below. Examine the metal surfaces at Location 1. Do not examine the ceramic coated areas at Location 3. Look carefully at the inter-segment surfaces, hooks and lugs at Locations 4, 5, 6, 7 and 13. Use the applicable penetrant procedure.

        PART IDENT

        TASK/SUBTASK

        Stage 1 HPT duct segment

        Refer to the SPM TASK 70-23-01-230-501 (Dip) or

        1. Base material cracks

        1. Repair, VRS3780 TASK 72-45-23-300-023 (REPAIR-023).

        2. Intersegment lug (Location 6) base material cracks

        1. Cracks that are 0.060 in. (1.52 mm) or less axially and 0.030 in. (0.76 mm) or less circumferentially are permitted. Refer to Figure. Not more than one crack permitted for each intersegment lug. Cracks in the web material are permitted. Cracks that extend into the web radius and onto the feather seal surface (location 7) are limited to an area that is 0.030 in. (0.76 mm) wide as measured from the web material. See Figure.

        2. Any number of cracks at Location 13 are permitted, provided their length does not exceed 0.050 in. (1.270 mm). See Figure.

        3. Base material cracks in seal groove (Location 8).

        1. Cracks are permitted in the seal groove (including the groove radii) on the side of the aft attachment hooks (Location 5) and the side of the forward seal surface (Location 12) each end. Indications are permitted to a maximum of 0.050 in. (1.270 mm) circumferentially on the aft hook forward surface. Indications are not permitted on the aft surface of the hook. Indications are permitted to a maximum of 0.080 in. (2.032 mm) circumferentially on the seal surface and aft side of seal surface. Refer to Figure. Cracks in the web material are permitted. Cracks that extend into the web radius and onto the feather seal surface (Location 7) are limited to an area that is 0.030 in. (0.76 mm) wide as measured from the web material. See Figure. This allowance is permitted on each end of the part.

    2. SUBTASK 72-45-23-220-123 Examine the Stage 1 HPT Duct Segments (01-060) for Bent, Part Missing, Wear on the Attachment and Intersegment Lug Surfaces

    1. Refer to Figure and Figure.

      2. Examine the duct segment for bent, part missing and wear on the attachment hook and intersegment lug.

        1. Wear.

          1. Not more than 0.005 in. (0.13 mm) at Locations 4, 5 and 6

          1. Accept

          2. Other than (a)

          1. Reject

        2. Bent or part missing part at Locations 4, 5 and 6

        1. Reject

    3. SUBTASK 72-45-23-220-124 Examine the Stage 1 HPT Duct Segment (01-060) for the Seal Groove Width

    1. Refer to Figure.

      2. Examine the duct segment at Location 8 for the width of the seal groove.

        1. Seal groove width is 0.025 in. to 0.031 in. (0.64 mm to 0.79 mm)

        1. Accept

        2. Other than (1)

        1. Reject

    4. SUBTASK 72-45-23-220-125 Examine the Stage 1 HPT Duct Segment (01-060) for Corrosion, Dents, Erosion, Nicks and Pits on the Base Metal Surfaces

    1. Refer to Figure and Figure.

      2. Examine the duct segment at Location 1 for corrosion, dents, nicks and pits on all the base metal surfaces.

        1. Corrosion, dents, erosion, nicks and pits.

          1. Sealing surfaces (Location 10), nicks, dents, gouges and similar surface imperfections are permitted to 0.005 in. (0.13 mm) depth, if the imperfections are round bottomed

          1. Accept

          2. Hooks (Location 4 and 5), nicks, dents, gouges and similar surface imperfections are permitted to 0.005 in. (0.13 mm) depth, if they are smooth bottomed and not in the fillet radii under the hooks. Outside of the fillet radii and ID surfaces, isolated surface imperfections are permitted to 0.040 in. (1.02 mm) depth, if they are smooth bottomed and no two adjacent hooks are affected. The total affected area on each hook is less than 0.016 sq in. (10.322 sq mm) and no imperfection spans more than 0.100 in. (2.54 mm) circumferentially. For hooks with multiple surface imperfections only one may be greater than 0.005 in. (0.13 mm) depth

          1. Accept

          3. Intersegment surfaces (Location 7, two places), nicks, dents, gouges and similar surface imperfections are permitted to 0.005 in. (0.13 mm) depth, if they are smooth bottomed and not in the fillet radii, isolated surface imperfections are permitted to 0.040 in. (1.02 mm) depth, if they are smooth bottomed, the total affected area is less than 0.016 in. (0.406 mm) and no imperfection spans more than 0.100 in. (2.54 mm) axially. For multiple surface imperfections, only one may be greater than 0.005 in. (0.13 mm) deep

          1. Accept

          4. All other surfaces, nicks, dents, gouges and similar surface imperfections are permitted to 0.005 in. (0.13 mm) depth, if they are smooth bottomed. Isolated surface imperfections are permitted to 0.040 in. (1.02 mm) depth, if fillet radii, cooling holes are not affected, the imperfection is smooth bottomed and total affected area is less than 0.050 sq in. (32.26 sq mm). All imperfections greater than 0.005 in. (0.13 mm) in depth must be separated by 0.010 in. (0.25 mm) minimum. Imperfections on axial and circumferential faces spanning more than half of the face width are not permitted

          1. Accept

          5. Other than (a), (b), (c) and (d)

          1. Repair, VRS3721 TASK 72-45-23-300-017 (REPAIR-017).

      3. Examine the duct segment at Location 9 for erosion on the intersegment edges. Refer to Figure.

        1. Erosion of the intersegment edges.

          1. Erosion on the edges not more than 0.050 in. (1.27 mm) measured circumferentially and radially from the intersegment edge, along the full axial length

          1. Repair, VRS3721 TASK 72-45-23-300-017 (REPAIR-017).

          2. More than in (a)

          1. Repair, VRS3780 TASK 72-45-23-300-023 (REPAIR-023).

    5. SUBTASK 72-45-23-220-126 Examine the Stage 1 HPT Duct Segment (01-060) for Chips and Spalls on the Ceramic Coating

    1. Refer to Figure, Figure and Figure.

      2. Examine the duct segment assembly at Location 3 for chips and spalls on the ceramic coating in Areas 1 and 2.

        1. Chips and spalls in Area 2.

          1. All quantities down to bond coat

          1. Accept

          2. Other than (a)

          1. Repair, VRS3780 TASK 72-45-23-300-023 (REPAIR-023).

        2. Chips and spalls in Area 1.

          1. All quantities not more than 50 per cent of the surface area

          1. Accept

          2. Other than (a)

          1. Repair, VRS3780 TASK 72-45-23-300-023 (REPAIR-023).

    6. SUBTASK 72-45-23-220-128 Examine the Stage 1 HPT Duct Segment (01-060) for Metal Transfer, Cracks, Erosion and Rub on the Ceramic Coating

    1. Refer to Figure.

      2. Examine the duct segment assembly for metal transfer and cracks.

        1. Metal transfer at Location 3

        1. Repair, VRS3543 TASK 72-45-23-300-010 (REPAIR-010) or Repair, VRS3780 (TASK 72-45-23-300-023 (REPAIR-023).

        2. All axial and circumferential cracks that are horizontal to the top surface at Location 3

        1. Repair, VRS3780 TASK 72-45-23-300-023 (REPAIR-023).

      3. Examine the duct segment for erosion and rub at Location 3.

        1. Erosion and rub.

          1. If the maximum radius that is temporarily marked on the surface is not more than 12.825 in. (325.76 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 is disassembled.

          2. Other than (a)

          1. Repair, VRS3780 TASK 72-45-23-300-023 (REPAIR-023).

      4. Not full machining of the ceramic coat in Area 2 on parts that are coated again by Repair, VRS3780 TASK 72-45-23-300-023 (REPAIR-023).

      1. Accept

    7. Figure: Stage 1 HPT Duct Segment Inspection Locations

    Stage 1 HPT Duct Segment Inspection Locations

    Figure: Stage 1 HPT Duct Segment Inspection Locations

    Sheet 2

    Legend
    Stage 1 HPT Duct Segment Inspection Locations

    Sheet 2

    Close

    Figure: Stage 1 HPT Duct Segment Inspection Locations

    Sheet 3

    Legend
    Stage 1 HPT Duct Segment Inspection Locations

    Sheet 3

    Close

    Figure: Stage 1 HPT Duct Segment Inspection Locations

    Sheet 4

    Legend
    Stage 1 HPT Duct Segment Inspection Locations

    Sheet 4

    Close

    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

    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 the procedure and added figure 7. (17VC069)