TASK 72-50-23-300-003 LPT Stage 7 Outer Shroud Seal Segment - Blend Repair of Surface Segment, Repair-003 (VRS4076)

DMC:V2500-A0-72-50-2307-00A-649A-C|Issue No:003.00|Issue Date:2015-05-01

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 72-50-23-300-003 LPT Stage 7 Outer Shroud Seal Segment - Blend Repair of Surface Segment, Repair-003 (VRS4076)

Effectivity

FIG/ITEM

PART NO.

01-010

3A0666

01-010

3A2956

Material of component

DESCRIPTION

RR SYMBOL

MATERIAL

Stage 7 shroud seal segment

Hastelloy X

General

Price and availability - none

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

NOTE

  1. For more equipment and materials necessary to do this repair refer to the SPM TASK 70-23-05-230-501

  2. Equivalent equipment may be used.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-23-350-052 Blend Repair the Stage 7 Shroud Seal Segment

      NOTE

      1. Refer to TASK 70-35-21-350-501 for blending surface damage.

      2. For local blending use a length to depth ratio of 5:1 minimum, refer to Figure.

      3. Unless stated differently, there is no limit for the number of blends. If there is a number of damage marks close together, blend the whole area to the specified depth. Minimum distance between blends is 0.500 in. (12,7 mm).

      4. Do not blend cracks with this repair.

    1. Refer to Figure and Figure.

      2. Blend the surface in area A1.

      1. Maximum permitted blend repair depth is 0.010 in. (0,25 mm).

      3. Blend the surface in area A2.

      1. Remove raised material only.

    2. SUBTASK 72-50-23-230-055 Examine the Blended Areas for Cracks

      1. Do the test for cracks.

      1. Refer to the SPP TASK 70-23-05-230-501.

      2. Use medium sensitivity level.

      3. No cracks are permitted.

    3. SUBTASK 72-50-23-220-070 Do the Post Repair Inspection

    1. Refer to Figure.

      2. Examine the surface of the blended areas visually.

      1. The blended surface must be as smooth as the initial surface. Edges and corners are not permitted.

      3. Examine the blended areas dimensionally.

      1. The blend ratio must be in the limits.

    4. Figure: Repair Details and Dimensions

    Repair Details and Dimensions

    Figure: Repair Details and Dimensions

    Repair Details and Dimensions

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised procedure. EC 88VM505A