Repair Engineering Instruction
IC-51-B1-1001
Rev. D
US Government Controlled Technology
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GE Energy
GE Energy Services
Gas Turbine Repair Engineering
300 Garlington Road
Greenville, South Carolina, U.S.A.
Yes
No
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Technical License Required?
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INSPECTION CHECK
IC-51-B1-1001
REV: D
Title: Stage 1 Bucket – Inspection / Check
Model Applicability: MS5001
To be performed by Qualified Service Center Personnel?
Component or Unit Serial
Numbers (or “All”):
All
Yes
No
TECHNICAL CONTENT OF THIS DOCUMENT IS APPROVED BY GE REPAIR TECHNOLOGY CoE
GE P&RS Gas Service Center Authorized Distribution
Service Center
Type
Authorized (Y/N)
Service Center
Type
Authorized (Y/N)
ACSC
GEA
N
Houston
GE
Y
Basildon
GE
Y
KPS
TTA
N
BGGTS
JV
Y
McAllen
GEA
N
CAPCO
TTA
N
MEELSA (GEMTEC)
JV
Y
GE-HPEC (QHD)
JV
N
Nigeria
GE
N
GE-Hungary
GE
Y
PT Gents
JV
Y
GE Keppel
JV
Y
TGE
JV
N
GEPTEC - Kaluga
GE
N
TGTS
JV
N
Greenville
GE
Y
TNB TENAGA
TTA
N
GTS
JV
Y
GE Oil & Gas Service Center Authorized Distribution
Service Center
Type
Authorized (Y/N)
Algesco
JV
Y
Barcelona (PEGS)
GE
Florence
GE
Service Center
Type
Authorized (Y/N)
Houston O&G
GE
Y
Y
Qatar
JV
N
Y
Sapura Crest
JV
N
Trinidad
GE
Y
Turbimeca
GE
Y
Edmonton
GE
Y
ZKMK
TTA
N
Australia SC
GE
Y
GEA = GE Aviation | JV = Joint Venture
| TTA = Technology Transfer Agreement
NOTE: These tables do NOT imply Service Center Certification or Qualification.
© COPYRIGHT 2010 GENERAL ELECTRIC COMPANY
The information contained in this document is GE proprietary information and is disclosed in confidence. The technical data herein is the property of GE and shall not
be used or disclosed to others without the express written consent of GE. If consent is given, this notice or - as necessary, the supplementary notice set forth on each
page of this document, shall appear on any such communication. In addition, the technical data herein, and the direct product of the data, may not be diverted,
transferred, re-exported or disclosed in any manner without prior written approval.
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Sheet 1 of 40
Repair Engineering Instruction
IC-51-B1-1001
Rev. D
REI Approvals
Refer to Repair Engineering procedure GTRE 102 for approval requirements by document type.
Revision History
Rev
Description
Signature
-
Draft Issue
A
Reduced Dovetail Dimensional Check to a
sample of #10 Buckets
See Above
18/02/2013
C. Giolli
B
Date
Approved by Email
Internal Aluminizing Avoidance on GTD 111 S. Pisegna Approved by Email
CC Stage 1 Buckets after stripping
N. Pieroni Approved by Email
27/06/2014
P. Kraleti Approved by Email
C. Giolli
C
D
Approved by Email
Internal Aluminizing Avoidance on GTD 111 S. Pisegna Approved by Email
CC Stage 1 Buckets after stripping (Only for
N. Pieroni Approved by Email
Solid Version)
P. Kraleti Approved by Email
Table A and Table B Revision
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C. Giolli
Approved by Email
S. Pisegna Approved by Email
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18/07/2014
06/08/2014
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Repair Engineering Instruction
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IC-51-B1-1001
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Rev. D
Sheet 3 of 40
Repair Engineering Instruction
IC-51-B1-1001
Rev. D
INDEX
1. Purpose
2. Parts Applicability
3. Description
4. Decision Flow Chart
5. Tools, Equipment, and Materials
6. Procedure
6.1. Incoming Receiving
6.2. Metallurgical Evaluation & Mechanical Testing
6.3. Cleaning
6.4. Visual Inspection - General
6.5. Dimensional Inspection
6.6. Coating Removal
6.7. Fluorescent Penetrant Inspection (FPI)
6.8. Non-interpretable FPI Indications / Visual Indications
7. Appendices
7.1. Appendix A - Reference Documents
7.2. Appendix B - Component Repair Engineering Instructions
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Sheet 4 of 40
Repair Engineering Instruction
IC-51-B1-1001
Rev. D
1. Purpose
1.1. This document provides inspection instructions and criteria for determining the serviceability
and repairability of MS5001 Stage 1 Turbine Buckets. Adherence to this inspection
procedure will produce the required repair workscope based on part condition.
1.2. Repair Sources that perform procedures listed in this REI, must fulfill the requirements listed
in RSS-51-B1-1001, Frame MS5001 Stage 1 Bucket - Repair Source Substantiation, and
SP-16-1002, Repair Source Substantiation, Qualification, and Quality System Requirements,
and be qualified by Sourcing or GE Repair Engineering.
2. Parts Applicability
2.1. The parts applicable to this inspection document are listed in Table 1.
2.2. The configurations listed in Table 1 correspond to both MS5001 hollow and solid bucket
designs. Contact Repair Engineering for information regarding inspection and repair of
bucket configurations not listed in Table 1.
Table 1: Parts Summary (MS5001 Stage 1 Buckets)
Final Machining
Casting
Alloy
Alloy
Name
Coating
Specification
Coating
Casting
Type
733E0831P002
733E0831P003
733E0831P004
733E0831P005
733E0831P019
733E0831P020
733E0831P001
B50A467A
U500
N/A
Uncoated
Hollow
733E0831P007
733E0831P008
733E0831P009
733E0831P010
733E0831P011
733E0831P012
733E0831P014
733E0831P016
733E0831P006
B50A524B
U700
N/A
Uncoated
Hollow
733E0831P013
733E0831P015
733E0831P017
733E0831P018
733E0831P035
733E0831P036
733E0831P006
B50A524B
U700
P16C-AG2
PtAl (Internal &
External)
Hollow
733E0831P022
733E0831P023
733E0831P024
733E0831P025
733E0831P026
733E0831P027
733E0831P021
B50A563A
IN738
N/A
Uncoated
Hollow
733E0831P033
733E0831P034
733E0831P028
B50A563B
IN738
N/A
Uncoated
Hollow
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IC-51-B1-1001
Rev. D
Table 1: Parts Summary (MS5001 Stage 1 Buckets) (continued)
Final Machining
Casting
Alloy
Alloy
Name
Coating
Specification
733E0831P029
733E0831P030
733E0831P031
733E0831P032
733E0831P037
733E0831P038
733E0831P105
733E0831P106
733E0831P107
733E0831P108
733E0831P111
733E0831P112
733E0831P028
B50A563B
IN738
P16C-AG2
PtAl (Internal &
External)
Hollow
SOM42619P111
(SMU48279)
SOM42619P112
(SMU48280)
SMH48278
B50A563B
IN738
P16C-AG2
PtAl (Internal &
External)
Hollow
SOM42619P111A
(SMU48384)
SOM42619P112A
(SMU48335)
SMH48278
B50A563B
IN738
P16C-AG2
(but LDC2)
PtAl (Howmet
LDC-2)
Hollow
SOM42619P111B
(SMU48475)
SOM42619P112B
(SMU48476)
SMH48278
B50A563B
IN738
SOM5457529
GT33 IN+
Hollow
733E0831P113
733E0831P114
733E0831P121
733E0831P122
733E0831P307
733E0831P308
733E0831P315
733E0831P316
733E0831P028
B50A563B
IN738
P16-AG4 &
P16B-AG7
(VPS-2)
Internal
Aluminide +
GT29
Hollow
Internal
Aluminide +
GT29 + Overaluminide
Hollow
PtAl (Internal &
External)
Hollow
733E0831P317
733E0831P028
B50A563B
IN738
P16-AG4 &
P16B-AG7
(VPS-2) +
P16C-AG5
733E0831P201
733E0831P202
733E0831P203
733E0831P204
733E0831P205
733E0831P206
733E0831P039
B50A719A
GTD111
P16C-AG2
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Casting
Type
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Repair Engineering Instruction
IC-51-B1-1001
Rev. D
Table 1: Parts Summary (MS5001 Stage 1 Buckets) (continued)
Final Machining
Casting
Alloy
Alloy
Name
Coating
Specification
Coating
Casting
Type
733E0831P115
733E0831P116
733E0831P117
733E0831P118
733E0831P119
733E0831P120
733E0831P309
733E0831P310
733E0831P311
733E0831P312
733E0831P313
733E0831P314
733E0831P039
B50A719A
GTD111
P16C-AG4
P16B-AG7
(VPS-2)
Internal
Aluminide +
VPS GT29
733E0831P301
733E0831P302
733E0831P303
733E0831P304
733E0831P305
733E0831P306
733E0831P039
B50A719A
GTD111
P16C-AG4
P16B-AG7
(VPS-14)
Internal
Aluminide
+VPS GT29 +
Overaluminide
Hollow
Hollow
Hollow
733E0831P318
733E0831P319
733E0831P320
733E0831P321
733E0831P322
733E0831P039
B50A719A
GTD111
P16C-AG4 +
P16B-AG7
(VPS-2) +
P16C-AG5
948E0707P001
948E0707P003
948E0707P005
948E0707P006
948E0707P009
948E0707P010
948E0707P022
948E0707P023
948E0704P001
B50A719B
GTD111
P16C-AG2
PtAl
Solid
948E0707P002
948E0707P004
948E0707P007
948E0707P008
948E0707P011
948E0707P012
948E0707P024
948E0707P025
948E0704P001
B50A719B
GTD111
P16B-AG7
(VPS-2)
GT29
Solid
948E0707P013
948E0707P014
948E0707P015
948E0707P016
948E0707P017
948E0707P018
948E0707P026
948E0707P027
948E0704P001
B50A719B
GTD111
P16B-AG7
(VPS-7)
GT29
Solid
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IC-51-B1-1001
Rev. D
Table 1: Parts Summary (MS5001 Stage 1 Buckets) (continued)
Final Machining
Casting
Alloy
Alloy
Name
Coating
Specification
948E0707P019
948E0707P020
948E0707P021
948E0707P028
948E0707P029
948E0704P001
B50A719B
GTD111
P16B-AG7
(VPS-2) +
P16C-AG5
GT29
Overaluminide
Solid
948E0707P031
948E0707P032
948E0704P001
B50A719B
GTD111
P16B-AG7
(VPS-2) +
P16C-AG8
GT29
Overaluminide
Solid
SOM39416P031A
(SMU48331)
SOM39416P032A
(SMU48332)
SMH48241
B50A719B
GTD111
GT29+
Solid
SOM39416P031B
(SMU48341)
SOM39416P032B
(SMU48342)
SMH48241
B50A719B
GTD111
GT33+
Solid
SOM39416P031C
(SMU48343)
SOM39416P031C
(SMU48344)
SMH48241
B50A719B
GTD111
GT33
Solid
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IC-51-B1-1001
Rev. D
3. Description
3.1. The MS5001 Stage 1 Bucket has undergone multiple design changes since the 1950s.
Early designs consisted of a hollow casting produced of either U500 (B50A467A), U700
(B50A524B), IN738 (B50A563A or B50A563B), or GTD111 (B50A719A). The hollow bucket
design is shown in Figure 1A.
3.2. With the introduction of the “Performance Improvement Package”, the Stage 1 Bucket was
re-designed using a solid casting produced of GTD111 (B50A719B). The solid bucket design
is shown in Figure 1B.
3.3. Major features and nomenclature for the MS5001 Stage 1 Bucket are shown in Figure 2
(solid design) and Figure 3 (hollow design).
Figure 1A. MS5001 Stage 1 Bucket
Hollow Design
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Figure 1B. MS5001 Stage 1 Bucket
Solid Design
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IC-51-B1-1001
Rev. D
SUCTION SIDE
LEADING
EDGE
PRESSURE SIDE
VIEW A
TRAILING
EDGE
VIEW A
TRAILING
EDGE (TE)
LEADING
EDGE (LE)
AIRFOIL
SLASH FACE
PLATFORM
SHANK
DOVETAIL
PRESSURE SIDE
SUCTION SIDE
Figure 2. Major Features and Nomenclature for the MS5001 Stage 1 Bucket (Solid Design)
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IC-51-B1-1001
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Figure 3. Major Features and Nomenclature for the MS5001 State 1 Bucket (Hollow Design)
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IC-51-B1-1001
Rev. D
3.4. Various airfoil coatings have also been applied to the Stage 1 Bucket. Table 1 describes the
coating system applied at original manufacture.
3.4.1. Early hollow bucket designs were uncoated, including both the external airfoil and
the internal cavity of the hollow bucket. Later hollow bucket designs included
platinum aluminide (PtAl) coating of both the internal cavity and external airfoil
surface. Other hollow bucket designs included internal aluminization of the internal
cavity while the external airfoil was coated with GT29. Refer to Table 1 for exact
coating specifications applied at original manufacture. Some designs also included
an overaluminide on the external airfoil surface. The latest MS5001 Stage 1 Bucket
design includes a GT33 airfoil coating.
3.4.2. Early solid bucket designs were coated with PtAl or GT29. Some bucket designs
also included overaluminide of the GT-29 coating. The most recent solid bucket
designs are coated with GT33. Refer to Table 1 for exact coating specifications
applied at original manufacture.
3.4.3. Table 2 lists markings typically used to identify the type of coating applied to the
bucket.
3.4.4. During previous repairs, alternate coatings than those listed for specific buckets in
Table 1 may have been applied.
Table 2: Bucket Coating Identification Codes
Marking
V2
H2
V3
H3
DH
KH
K
H
Material Type
GT29
GT29
GT33
GT33
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Material Composition
Coating Application Method
CoCrAlY
VPS
CoCrAlY
HVOF
NiCoCrAlY
VPS
NiCoCrAlY
HVOF
Platinum Aluminide (PtAl)
Internal/external aluminization
External aluminization
Internal aluminization
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Repair Engineering Instruction
IC-51-B1-1001
Rev. D
3.5. Identification codes are marked on the shank of the bucket. Figure 4 illustrates the location of
key information such as bucket casting part number, serial number, material code, coating
code, etc. Details of the marking are in SP-16-1001, Repair Part Marking Standardization.
BUCKET
DRAWING
NUMBER
CASTING DRAWING NUMBER
HEAT LOT
MATERIAL CODE
SERIAL NUMBER
COATING CODE
CASTING
DRAWING
NUMBER
SERIAL NUMBER
HEAT LOT
MATERIAL
CODE
ALTERNATIVE (OLD)
COATING CODE
Figure 4. Bucket Identification Information
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Repair Engineering Instruction
IC-51-B1-1001
Rev. D
Decision Flow Chart
NOTE: This flow chart is for general reference only. Refer to your manufacturing process flow
chart for more operational detail.
Receiving Inspection
1. Record PN, SN, Operating Hours & Cycles, Tfire, Etc
2. Visual Inspection for Obvious Non-Repairable Damage
3. Verify Material and Coatings
Complete Metallurgical Evaluation &
Mechanical Testing of Representative Bucket
Acceptable to
Repair for
Return to
Service?
No
Submit Non-Conformance
to Engineering for
Disposition
Yes
Clean Buckets
Visual Inspection
1. Airfoil
2. Squealer Tip
3. Platform/Shank
4. Dovetail
Dimensional Inspection
1. Dovetail
2. Tip Height
Coating Strip
Required?
Yes
Strip Coating
No
Thermal or
Chemical Etch
(Uncoated areas)
Fluorescent Penetrant
Inspect
(Uncoated Areas)
NOTE:
THIS DOCUMENT COVERS THE
SHADED PORTIONS OF THIS FLOW
CHART
Record Findings &
Issue Report
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Repair Engineering Instruction
IC-51-B1-1001
Rev. D
5. Tools, Equipment, and Materials
NOTE: Use of equivalent or alternate tools, equipment, and/or consumable materials is
permissible with approval from GE Engineering.
5.1. Tools and Equipment
5.1.1. Gauge pins, 0.21875 in. (5.556 mm) diameter
5.1.2. Standard shop measuring tools (calipers, surface plate, height gage, etc.)
5.1.3. Fluorescent penetrant inspection equipment per P3A-AG4, Fluorescent Penetrant
Testing
5.1.4. Ultrasonic inspection equipment for wall thickness measurement
5.2. Consumable Materials
5.2.1. Lead Free Permanent Marker as specified in P23A-AG2, Identification-Turbine /
Generator Parts and Materials
6. Procedure
NOTE: The limits quoted in this document represent maximum or minimum engineering
acceptable limits to achieve required form/fit/function. Customer specification, cosmetic
concerns, or other factors may require more stringent limits. The definition and control of
any more stringent requirements is at the discretion of the Repair Engineer.
NOTE: If any inspection item classifies the part as Not Repairable, record it and notify
engineering of this information. Do not continue with the inspection process.
NOTE: Alternate inspection processes may be used with prior approval from GE Repair
Engineering.
NOTE: Thermal Etching per SP-44-1001, Furnace Heat Treatment (Material GTD-111), or
Solution Heat Treat per SP-44-1001 can be used as a substitute for Chemical Etching per
SP-24-1001, Pre-FPI and Post Strip Grain Etch.
NOTE: Take photographs and record on inspection forms any part exhibiting unusual wear,
damage, or any visual condition that falls outside the workscope of this document. Submit
to Repair Engineering for review.
NOTE: Calibration of the devices used in the inspection measurements should be conducted on a
schedule and frequency recommended by the manufacturer. Gauge R & R should be
conducted as necessary to check the repeatability of the instrument.
Definitions:
•
Serviceable Limit is the least or maximum acceptable condition of specific areas on the
component. These limits allow the component to be used without repair.
•
Not Serviceable is any condition that does not meet the Serviceable Limit. This condition
does not allow the component to be used as is. The component will either require repair or
must be retired from service.
•
Repairable Limit is the amount of the existing condition/distress that can be repaired.
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IC-51-B1-1001
Rev. D
•
Not Repairable is a condition for which the component cannot be repaired and must be
replaced.
•
Linear Indication is classified as an indication having a length equal to or greater
than 3 times width.
•
Refer to SP-32-1012, Inspection Terms and Definitions, for a comprehensive list of
definitions.
6.1. Incoming Receiving
6.1.1. Verify the bucket part number and serial number. See Figure 4 for typical location of
identification codes.
6.1.1.1. Based on the casting part number, determine the bucket material as
defined in Table 1 or by the engineering drawing. If two or more part
numbers are detected, contact the GE Repair Engineer for disposition. If a
superseded part number is detected contact the GE Repair Engineer for
disposition.
6.1.1.2. Record running hours, number of start/stop cycles and trips, running hours
from latest refurbishments on the Inspection Report Document.
6.1.1.3. Based on the bucket finish part number, determine the airfoil coating
required by the engineering drawing. Some older bucket configurations did
not require airfoil coating.
NOTE: Dependent on repair history, alternate coatings may have been
applied to the buckets. Therefore, some buckets may have
coatings that are not consistent with the engineering drawing
requirements.
6.1.1.4. Verify the customer provided information regarding the coating type. If
customer cannot verify existing coating, it is permissible to identify coating
through surface analysis or metallurgical evaluation.
6.1.2. Verify that all information is the same for all buckets in the set while recording serial
numbers. Note any differences.
6.1.3. Inspect bucket for previous repair markings per SP-16-1001, Repair Part Marking
Standardization.
6.1.4. If the serial number is scratched or lost, assign a new one per local shop register and
vibropeen on bucket per SP-16-1001.
6.1.5. Vibropeen the buckets with the service center job number per SP-16-1001.
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IC-51-B1-1001
Rev. D
6.2. Metallurgical Evaluation & Mechanical Testing
NOTE: Destructive testing of one bucket per set is required unless otherwise specified by Oil
& Gas Engineering. For authorization to omit destructive testing, submit non-conformance
request to Repair Engineering.
NOTE: Do not continue processing bucket set until results of destructive testing are verified.
6.2.1. Identify one bucket from the set for destructive testing.
The bucket must be
representative of the general condition of the set. No cleaning or non-destructive
testing shall be performed on the selected bucket prior to destructive analysis.
6.2.2. Submit selected bucket to laboratory approved by Oil & Gas Materials and Process
Engineering for metallographic examination and mechanical testing. Laboratory shall
perform Residual Life Analysis (RLA) on bucket per SIF-13 for MS5001 Stage 1
Bucket. RLA shall give disposition based on Base Material and Internal and
External Coating Condition. Submit results of analysis to Repair Shop and
O&G Repair Eng. Team.
6.2.3. If results of destructive analysis conclude that bucket set should be retired from
service, do not continue processing. Submit non-conformance to Repair Engineering
for disposition.
6.2.4. If results of coating inspection conclude that severe oxidation damage
occurred, it’s not possible to avoid Internal Aluminide Stripping and
Recoating.
6.2.5. If results of destructive analysis verify serviceable condition of bucket set, continue
cleaning and inspection process.
6.3. Cleaning
NOTE: Grit blasting should not be used as the method to remove oil and grease from the
buckets. Steam cleaning should be performed prior to grit blasting.
6.3.1. Steam clean per SP-21-1002, Steam Cleaning to remove oil and grease.
6.3.2. To remove adhered dirt or debris, clean buckets using Method No. 1A per SP-211003, Dry Abrasive Grit Blast Cleaning, using 220 mesh or 325 mesh aluminum
oxide grit.
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Repair Engineering Instruction
IC-51-B1-1001
Rev. D
6.4. Visual Inspection - General
6.4.1. Visually inspect buckets for any obvious non-repairable damage including foreign
object damage (FOD), missing material, excessive erosion or oxidation, etc.
6.4.2. If coating removal is not required, inspect coating for obvious non-repairable
damage. Refer to Table 3 for visual acceptance limits for coating.
Table 3: MS5001 Stage 1 Bucket Coating Visual Acceptance Limits
Airfoil
Inspection
Serviceable Limit
1. Coating
(Flaking, Spalling,
Missing, Cracked,
Excessive
Oxidation or
Erosion)
Not Serviceable
Repairable Limit
Any Amount
Repair Method
Strip Coating per
RD-51-B1-1001
6.5. Dimensional Inspection
NOTE: Select from the set a sample of #10 buckets representative of the worst condition at
visual. Perform dimensional inspection on those #10 buckets.
6.5.1. Measure bucket height, Dimension Z, as shown in Figure 5 using two 0.21875 in.
(5.556 mm) diameter gauge pins. The bottom tangent line of the gauge pin
establishes Datum -U-. Refer to Table 4 and Figure 5 for serviceable and
repairable limits.
6.5.2. Inspect dovetail by measuring Dimension ZA using two 0.21875 in (5.556mm)
diameter gauge pins as shown in Figure 5. Refer to Table 4 and Figure 5 for
serviceable and repairable limits.
Record measurements on the inspection Report document; if results of this check
show one bucket dovetail out of serviceable limits in Table 4, the check must be
performed on the whole set.
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Sheet 18 of 40
Repair Engineering Instruction
IC-51-B1-1001
Rev. D
Table 4: MS5001 Stage 1 Bucket Dimensional Limits (See Figure 5)
Dovetail Width & Tip Height
Inspection
1. Dim. ZA
2. Dim. Z
(P/N 948e0707
P024 thru P032
Only)
Serviceable Limit
1.000 in – 1.006 in.
(25.40 – 25.56 mm)
a) Buckets not back to the
original customer or
unsure:
5.640
-
5.651
Repairable Limit
Repair Method
Not Repairable
Not Repairable
Any Amount in Area A
RD-51-B1-1001
Any Amount in Area A
RD-51-B1-1001
in.
(143.26 - 143.53 mm)
b) Buckets back to
original unit:
5.631 - 5.651in
3. Dim Z
(All Other P/Ns)
(143.00 - 143.53 mm)
a) Buckets not back to the
original customer or
unsure:
5.650– 5.661 in.
(143.53– 143.79 mm)
b) Buckets back to
original unit : 5.641 5.661
(143.28 - 143.79 mm)
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Sheet 19 of 40
Repair Engineering Instruction
IC-51-B1-1001
VIEW A
POINT P
Rev. D
NOTE: POINT P IS THE STACKING AXIS AT THE
-T-
BUCKET TIP PRESSURE SIDE.
POINT P
TIP HEIGHT
DIM. Z
FROM POINT P TO
-U-
PRESSURE
SIDE
-U0.21875 IN. (5.556mm)
DIA. GAUGE PIN (2 PLACES)
DIM ZA
Figure 5: MS5001 Stage 1 Bucket Dimensional Inspection
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Sheet 20 of 40
Repair Engineering Instruction
IC-51-B1-1001
Rev. D
6.6. Coating Removal
CAUTION:
STRIP ONLY THE COATED AREAS OF THE BUCKET. PROTECT THE
DOVETAIL AND SHANK AREA FROM DAMAMGE DURING COATING
REMOVAL.
6.6.1. Bucket Set requires External Coating Stripping (as summarized in Table A and Table
B)
6.6.2. Do not strip internal aluminide coatings unless required by RLA Disposition or
customer request (as summarized in Table A and Table B)
Fr51PA
Hollow
Version
Bucket
Material
Stripping
Re-Coat Stripping Int Re-Coat Int
Ext
Ext GT33
Coating
NiAl
Coating
Mandatory RLA
Udimet 700
yes
Yes
Udimet 500
yes
Yes
Inconel 738
yes
Yes
GTD111CC
yes
Yes
Mandatory if
Stripped
Mandatory if
on condition
Stripped
Mandatory if
on condition
Stripped
Mandatory if
on condition
Stripped
on condition
Table A Summary of Strip and Re-Coat Procedure
Fr51PA
Solid
Version
Bucket
Material
Stripping
Re-Coat Stripping Int Re-Coat Int
Ext
Ext GT33
Coating
NiAl
Coating
GTD111CC
yes
Mandatory RLA
Yes
on condition
Not
Mandatory
Table B Summary of Strip and Re-Coat Procedure
6.6.3. Suitably mask all non-coated surfaces and coated internal cavities to protect from
stripping process.
6.6.4. Remove coating per SP-23-1002, Advanced Coating Removal (ACR) Repair, or SP23-1001, General Stripping Process for Coatings.
6.6.5. Heat tint inspect buckets per SP-32-1004, Heat Tint Inspection, to verify complete
coating removal.
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Sheet 21 of 40
Repair Engineering Instruction
IC-51-B1-1001
Rev. D
6.7. Fluorescent Penetrant Inspection (FPI)
NOTE:
Perform FPI on all uncoated portions of the bucket. If bucket did not require coating
removal, do not FPI coated surfaces.
6.7.1. Prior to FPI, verify bucket is free from dirt, grease, or other debris.
6.7.2. If any operations have been performed subsequent to chemical stripping of coating
or surface of bucket is not in grain etch condition, chemical etch bucket per SP-241001, Pre-FPI and Post Strip Grain Etch, or Thermal etch at 2050°F (1120°C) for 1
hour per SP-44-1001, Furnace Heat Treatment, or Solution Heat Treat per SP-441001, Furnace Heat Treatment.
6.7.3. Perform FPI per P3A-AG4, Fluorescent Penetrant Inspection.
6.7.3.1. For hollow design buckets, refer to Figure 6 for inspection zones and Table
5 for serviceable and repairable limits.
6.7.3.2. For solid design buckets, refer to Figure 8 for inspection zones and Table 6
for serviceable and repairable limits.
6.7.4. Mark rejectable indications using Lead Free Permanent Marker per P23A-AG2.
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Sheet 22 of 40
Repair Engineering Instruction
IC-51-B1-1001
Rev. D
Figure 6. Hollow Bucket Design - Zoning for Fluorescent Penetrant Inspection
GE PROPRIETARY INFORMATION
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Sheet 23 of 40
Repair Engineering Instruction
IC-51-B1-1001
Rev. D
Table 5A: Hollow Bucket Design Serviceable & Repairable Inspection Limits
(See Figure 6)
Bucket Tip
Inspection
Serviceable Limit
Repairable Limit
Repair Method
1. Tip – Area A
(Linear Indications)
Up to four (4) radial
indications less than 0.030
in. (0.75 mm) in length.
Any amount in
Area A.
RD-51-B1-1001
Repair required for all nonradial linear indications.
2. Area A (Tip)
(Non-Linear
Indications, Pits,
Pores, Voids,
Dents, Missing
Metal)
Any amount less than
0.030 in. (0.75 mm) in
diameter and maximum
depth of 0.010” (0.254
mm). Separation between
pores a minimum of three
times the smaller
indication.
Any amount
RD-51-B1-1001
3. Area A (Tip)
(Deposits / High
Metal)
Not serviceable
Any amount
RD-51-B1-1001
4. Area A (Tip)
(Oxidation /
Corrosion)
Not serviceable
Any amount that
does not require
blending depth
below minimum
wall thickness
RD-51-B1-1001
.
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Sheet 24 of 40
Repair Engineering Instruction
IC-51-B1-1001
Rev. D
Table 5B: Hollow Bucket Design Serviceable & Repairable Inspection Limits
(See Figure 6)
Airfoil – Hollow Bucket Design
Repair Method
Inspection
Serviceable Limit
Repairable Limit
1. Airfoil – Area Z
(Linear Indications
or Craze Cracks)
Not serviceable
Any amount that does not RD-51-B1-1001
require blending depth
below
minimum
wall
thickness.
See Figure 7 for minimum
wall thickness
requirements.
2. Airfoil – Area Z
(Non-Linear - Pits,
Pores, Voids,
Dents, Missing
Material)
Any amount less than 0.030
in. (0.75 mm) in diameter
and maximum depth of
0.010” (0.25mm).
Separation between pores a
minimum of three times the
smaller indication.
Any amount that does not
require blending below
minimum wall thickness.
3. Airfoil – Area Z
(Oxidation or
Corrosion)
Not serviceable
Any amount that does not
require blending below
minimum wall thickness.
RD-51-B1-1001
See Figure 7 for minimum
wall thickness
requirements.
RD-51-B1-1001
See Figure 7 for minimum
wall thickness
requirements.
4. Airfoil – Area Z
(Deposits / High
Metal)
Not serviceable on external
airfoil surface.
Any amount
RD-51-B1-1001
5. Airfoil – Area B
(Linear Indications
or Craze Cracks)
Not serviceable
Any amount less than
0.010 in (0.25 mm) max
blending depth.
RD-51-B1-1001
6. Airfoil – Area B
(Non-Linear - Pits,
Pores, Voids,
Dents, Missing
Material)
Any amount up to 0.030 in.
(0.75mm) in diameter and
0.01 in. (0.25 mm) in depth.
Separation between
indications a minimum of
three times the smaller
indication.
Any amount less than
0.010 in. (0.25 mm) max
blending depth
RD-51-B1-1001
7. Airfoil – Area B
(Oxidation or
Corrosion)
Not serviceable.
Any amount less than
0.010 in. (0.25 mm)
maximum blending depth.
RD-51-B1-1001
8. Airfoil – Area B
(Deposits / High
Metal)
Not serviceable
Any amount
RD-51-B1-1001
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Sheet 25 of 40
Repair Engineering Instruction
IC-51-B1-1001
Rev. D
Table 5B: Hollow Bucket Design Serviceable & Repairable Inspection Limits (continued)
(See Figure 6)
Inspection
Serviceable Limit
Repairable Limit
Repair Method
9. Airfoil – Area X
(Linear Indications
or Craze Cracks)
Note serviceable
Maximum of three
indications on LE and TE
radii up to 0.020 in. (0.5
mm) in length and 0.010 in.
(0.25 mm) maximum
blending depth. Separation
between indications a
minimum of three times the
smaller indication.
RD-51-B1-1001
10. Airfoil – Area X
(Non-Linear - Pits,
Pores, Voids,
Dents, Missing
Material)
Any amount up to 0.010
in. (0.25 mm) in diameter
and 0.010 in. (0.25 mm) in
depth. Separation
between indications a
minimum of three times
the smaller indication.
Maximum of three
indications on LE and TE
radii up to 0.020 in. (0.5
mm) in diameter and 0.010
in. (0.25 mm) maximum
blending depth. Separation
between indications a
minimum of three times the
smaller indication.
RD-51-B1-1001
11. Airfoil – Area X
(Oxidation or
Corrosion)
Not serviceable
Any amount less than 0.005
in. (0.13 mm) maximum
blending depth.
RD-51-B1-1001
.
12. Airfoil – Area X
(Deposits / High
Metal)
Not serviceable
Any amount
RD-51-B1-1001
13. Airfoil – Area Y
(Linear Indications
or Craze Cracks)
Not serviceable
Any amount less than 0.005
in (0.13 mm) max blending
depth.
RD-51-B1-1001
14. Airfoil – Area Y
(Non-Linear - Pits,
Pores, Voids,
Dents, Missing
Material)
Any amount up to 0.010
in. (0.25 mm) in diameter
and 0.005 in. (0.13mm) in
depth. Separation
between indications a
minimum of three times
the smaller indication.
Any amount less than 0.005
in. (0.13 mm) max blending
depth.
RD-51-B1-1001
15. Airfoil – Area Y
(Oxidation or
Corrosion)
Not serviceable
Any amount less than 0.005
in. (0.11 mm) maximum
blending depth.
RD-51-B1-1001
16. Airfoil – Area Y
(Positive Metal)
Not serviceable
Any amount
RD-51-B1-1001
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Sheet 26 of 40
Repair Engineering Instruction
IC-51-B1-1001
Rev. D
Table 5C: Hollow Bucket Design Serviceable & Repairable Inspection Limits
(See Figure 6)
Platform and Shank
NOTE: Area S excludes top of platform.
Inspection
Serviceable Limit
Repairable Limit
1. Shank – Area S
(Linear Indications
or Craze Cracks)
Not serviceable.
RD-51-B1-1001
Maximum of three indications
per side less than 0.040 in.
(1.00 mm) in length and 0.030
in. (0.75 mm) in depth.
Separation between indications
must be three times the smaller
indication.
2. Shank – Area S
(Non-Linear - Pits,
Pores, Voids,
Missing Material,
Oxidation,
Corrosion)
Any amount less than 0.030
in. (0.75 mm) in diameter
and maximum depth of
0.020 in. ( 0.51 mm).
Separation between pores a
minimum of three times the
smaller indication.
Maximum of three indications
per side less than 0.040 in
(1.00 mm) in diameter and
0.030 in ( 0.75mm) max blend
depth. Separation between
indications must be three times
the smaller indication.
RD-51-B1-1001
3. Shank – Area S
(Deposits / High
Metal)
Not serviceable
Any amount.
RD-51-B1-1001
4. Top of Platform
(Linear Indications
or Craze Cracks)
Not serviceable
RD-51-B1-1001
Maximum of three indications
on platform less than 0.060 in.
(1.5 mm) in length and 0.020
in. (0.51 mm) in depth.
Separation between indications
must be three times the smaller
indication.
5. Top of Platform
(Non-Linear - Pits,
Pores, Voids,
Missing Material,
Oxidation,
Corrosion)
Not serviceable
RD-51-B1-1001
Maximum of three indications
on platform less than 0.060 in.
(1.5 mm) in diameter and 0.020
in. (0.51 mm) in depth.
Separation between indications
must be three times the smaller
indication.
6. Top of Platform
(Deposits / High
Metal)
Not serviceable
Any amount
.
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Repair Method
RD-51-B1-1001
Sheet 27 of 40
Repair Engineering Instruction
IC-51-B1-1001
Rev. D
Table 5D: Hollow Bucket Design Serviceable & Repairable Limits
(See Figure 6)
Dovetail
Inspection
Serviceable Limit
Repairable Limit
Repair Method
1. Pressure Surfaces – Area D1
(Linear Indications)
Not serviceable
Not Repairable
Not Repairable
2. Pressure Surfaces – Area D1
(Non-Linear - Pits, Pores,
Voids, Dents, Missing /
Broken Metal)
Not serviceable
Not Repairable
Not Repairable
3. Pressure Surfaces – Area D1
(Deposits / High Metal)
Not serviceable
RD-51-B1-1001
Any amount that can be
removed with a wire brush or
Scotch-Brite polish.
4. Pressure Surfaces – Area D1
(Wear)
Not serviceable
Not Repairable
Not Repairable
5. Pressure Surfaces – Area D1
(Oxidation / Corrosion)
Not serviceable
Not Repairable
RD-51-B1-1001
6. Non-Pressure Surfaces –
Area D2 (Linear
Indications)
Not serviceable.
Not Repairable
RD-51-B1-1001
7. Non-Pressure Surfaces –
Area D2
(NonLinear - Pits, Pores, Voids,
Dents, Missing / Broken
Metal)
Up to three
indications with 0.020
in. (0.50 mm) in
diameter and 0.005
in.
( 0.127mm) in
depth. Separation
between indications a
minimum of three
times the smaller
indication.
Not Repairable
RD-51-B1-1001
8. Non-Pressure Surfaces –
Area D2 (Deposits / High
Metal)
Not serviceable
RD-51-B1-1001
Any amount that can be
removed with a wire brush or
Scotch-Brite polish.
9. Root Bottom & Side Faces
(Linear Indications)
Not serviceable
Not Repairable
RD-51-B1-1001
10. Root Bottom & Side Faces
(Non-Linear - Pits, Pores,
Voids, Dents, Missing /
Broken Metal)
Up to six indications
with 0.020 in. ( 0.51
mm) in diameter and
0.005 in. (0.127mm)
in depth. Separation
between indications a
minimum of three
times the smaller
indication.
Not Repairable
RD-51-B1-1001
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Sheet 28 of 40
Repair Engineering Instruction
IC-51-B1-1001
Rev. D
Table 5D: Hollow Bucket Design Serviceable & Repairable Limits (continued)
(See Figure 6)
Dovetail
Inspection
Serviceable Limit
Repairable Limit
Repair Method
11. Root Bottom & Side
Faces
(Deposits / High
Metal)
Not serviceable
Any amount that can be
removed with a wire brush or
Scotch-Brite polish.
RD-51-B1-1001
12. Root Bottom & Side
Faces (Oxidation
/ Corrosion)
Not serviceable
Any amount that can be
removed with a wire brush or
Scotch-Brite polish.
RD-51-B1-1001
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Sheet 29 of 40
Repair Engineering Instruction
IC-51-B1-1001
Rev. D
Figure 8. Solid Bucket Design – Zoning for Fluorescent Penetrant Inspection
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Sheet 30 of 40
Repair Engineering Instruction
IC-51-B1-1001
Rev. D
Table 6: Solid Bucket Design - Serviceability Inspection Limits
(See Figure 8)
Tip – Solid Bucket Design
Inspection
Serviceable Limit
Repairable Limit
Repair Method
1. Area A
(Linear Indications)
Up to four (4) radial indications
less than 0.030in. ( 0.75 mm)
in length.
Any amount in Area A. RD-51-B1-1001
Repair required for all nonradial linear indications.
2. Area A
(Non-Linear
Indications, Pits,
Pores, Voids, Dents,
Missing Metal)
Any amount less than 0.030
in. (0.75 mm) in diameter and
maximum depth of 0.010”
(0.25 mm). Separation
between pores a minimum of
three times the smaller
indication.
Any amount
RD-51-B1-1001
3. Area A
(Deposits / High
Metal)
Not serviceable
Any amount
RD-51-B1-1001
4. Area A
(Oxidation /
Corrosion)
Not serviceable
Any amount that does
not require blending
depth below minimum
wall thickness
RD-51-B1-1001
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Sheet 31 of 40
Repair Engineering Instruction
IC-51-B1-1001
Rev. D
Table 6B: Solid Bucket Design - Serviceability Inspection Limits
(See Figure 8)
Airfoil
Serviceable Limit
1. Airfoil – Area Z
(Linear
Indications or
Craze Cracks)
Not serviceable
Any amount less than 0.010 in.
(0.25 mm) max blending
depth.
RD-51-B1-1001
2. Airfoil – Area Z
(Non-Linear - Pits,
Pores, Voids,
Dents, Missing
Material)
Any amount less than
0.030 in. (0.75 mm) in
diameter and maximum
depth of 0.010” (0.25mm).
Separation between
pores a minimum of three
times the smaller
indication.
Any amount less than 0.010 in.
(0.25 mm) max blending
depth.
RD-51-B1-1001
3. Airfoil – Area Z
(Oxidation or
Corrosion)
Not serviceable.
Any amount less than 0.010 in.
(0.25 mm) maximum blending
depth.
RD-51-B1-1001
4. Airfoil – Area Z
(Deposits / High
Metal)
Not serviceable
Any amount
RD-51-B1-1001
5. Airfoil – Area X
(Linear
Indications or
Craze Cracks)
Not serviceable
Maximum of three indications
on LE and TE radii up to 0.020
in. (0.50 mm) in length and
0.010 in. (0.25 mm) maximum
blending depth. Separation
between indications a
minimum of three times the
smaller indication
RD-51-B1-1001
GE PROPRIETARY INFORMATION
Repairable Limit
Repair Method
Inspection
ALL PRINTED COPIES ARE UNCONTROLLED
Sheet 32 of 40
Repair Engineering Instruction
IC-51-B1-1001
Rev. D
Table 6B: Solid Bucket Design – Serviceable & Repairable Limits (continued)
(See Figure 8)
Inspection
Serviceable Limit
Repairable Limit
6. Airfoil – Area X
(Non-Linear - Pits,
Pores, Voids,
Dents, Missing
Material)
Any amount up to 0.010
in. (0.25 mm) in diameter
and 0.010 in. (0.25 mm)
in depth. Separation
between indications a
minimum of three times
the smaller indication.
Maximum of three indications RD-51-B1-1001
on LE and TE radii up to
0.020 in. (0.5 mm) in diameter
and 0.010 in. (0.25 mm)
maximum blending depth.
Separation
between
indications a minimum of
three times the smaller
indication.
7. Airfoil – Area X
(Oxidation or
Corrosion)
Not serviceable
Any amount less than 0.005
in. (0.13 mm) maximum
blending depth.
RD-51-B1-1001
8. Airfoil – Area X
(Deposits / High
Metal )
Not serviceable
Any amount
RD-51-B1-1001
9. Airfoil – Area Y
(Linear
Indications or
Craze Cracks)
Not serviceable
Any amount less than 0.005
in. (0.13mm) max blending
depth.
RD-51-B1-1001
10. Airfoil – Area Y
(Non-Linear - Pits,
Pores, Voids,
Dents, Missing
Material)
Any amount up to 0.010
in. (0.25 mm) in diameter
and 0.005 in. (0.13 mm)
in depth. Separation
between indications a
minimum of three times
the smaller indication.
Any amount less than 0.005
in. (0.13mm) max blending
depth.
RD-51-B1-1001
11. Airfoil – Area Y
(Oxidation or
Corrosion)
Not serviceable.
Any amount less than 0.005
in. (0.11 mm) max blending
depth.
RD-51-B1-1001
12. Airfoil – Area Y
(Deposits/ High
Metal)
Not serviceable
Any amount
RD-51-B1-1001
GE PROPRIETARY INFORMATION
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Repair Method
Sheet 33 of 40
Repair Engineering Instruction
IC-51-B1-1001
Rev. D
Table 6C: Solid Bucket Design – Serviceable & Repairable Limits
(See Figure 8)
Platform and Shank
NOTE: Area S excludes top of platform.
Inspection
Serviceable Limit
Repairable Limit
Repair Method
1. Shank – Area S
(Linear Indications
or Craze Cracks)
Not serviceable
Maximum of three
indications per side less
than 0.040 in. (1.00 mm) in
length and 0.030 in. (0.75
mm) in depth. Separation
between indications must
be three times the smaller
indication.
RD-51-B1-1001
2. Shank – Area S
(Non-Linear - Pits,
Pores, Voids,
Missing Material,
Oxidation,
Corrosion)
Any amount less than 0.030 in.
(0.75 mm) in diameter and
maximum depth of 0.02 in.
(0.51 mm). Separation between
pores a minimum of three times
the smaller indication.
Maximum of three
indications per side less
than 0.040 in (1.00 mm) in
diameter and 0.030 in (0.75
mm) max blend depth.
Separation between
indications must be three
times the smaller indication.
RD-51-B1-1001
3. Shank – Area S
(Deposits / High
Metal)
Not serviceable
Any amount.
RD-51-B1-1001
4. Top of Platform
(Linear Indications
or Craze Cracks)
Not serviceable
Maximum of three
indications on platform less
than 0.060 in. (1.5 mm) in
length and 0.020 in. (0.51
mm) in depth. Separation
between indications must
be three times the smaller
indication.
RD-51-B1-1001
5. Top of Platform
(Non-Linear - Pits,
Pores, Voids,
Missing Material,
Oxidation,
Corrosion)
Not serviceable
Maximum of three
indications per side less
than 0.060 in. (1.5 mm) in
diameter and 0.020 in.
(0.51 mm) in depth.
Separation between
indications must be three
times the smaller indication.
RD-51-B1-1001
6. Top of Platform
(Deposits / High
Metal)
Not serviceable
Any amount
RD-51-B1-1001
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Sheet 34 of 40
Repair Engineering Instruction
IC-51-B1-1001
Rev. D
Table 6D: Solid Bucket Design – Serviceable & Repairable Limits
(See Figure 8)
Dovetail
Inspection
Serviceable Limit
Repairable Limit
Repair Method
1. Pressure Surfaces –
Area D1
(Linear Indications)
Not serviceable
Not Repairable
Not Repairable
2. Pressure Surfaces –
Area D1
(Non-Linear - Pits,
Pores, Voids, Dents,
Missing / Broken
Metal)
Not serviceable
Not Repairable
Not Repairable
3. Pressure Surfaces –
Area D1 (Deposits /
High Metal)
Not serviceable
RD-51-B1-1001
Any amount that can be
removed with a wire brush or
Scotch-Brite polish.
4. Pressure Surfaces –
Area D1 (Wear)
Not serviceable
Not Repairable
Not Repairable
5. Pressure Surfaces –
Area D1
(Oxidation /
Corrosion)
Not serviceable
Not Repairable
RD-51-B1-1001
6. Non-Pressure
Surfaces – Area D2
(Linear Indications)
Not serviceable
Not Repairable
RD-51-B1-1001
7. Non-Pressure
Surfaces – Area D2
(Non-Linear - Pits,
Pores, Voids, Dents,
Missing / Broken
Metal)
up to three indications
with 0.020 in. (0.51 mm)
in diameter and 0.005 in.
( 0.127 mm) in depth.
Separation between
indications a minimum of
three times the smaller
indication.
Not Repairable
RD-51-B1-1001
8. Non-Pressure
Surfaces – Area D2
(Deposits / High
Metal)
Not Serviceable
RD-51-B1-1001
Any amount that can be
removed with a wire brush or
Scotch-Brite polish.
9. Root Bottom & Side
Faces (Linear
Indications)
Not serviceable
Not Repairable
RD-51-B1-1001
.
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Repair Engineering Instruction
IC-51-B1-1001
Rev. D
Table 6D: Solid Bucket Design – Serviceable & Repairable Limits (continued)
(See Figure 8)
Inspection
Serviceable Limit
Repairable Limit
Repair Method
10. Root Bottom & Side
Faces
(Non-Linear - Pits,
Pores, Voids, Dents,
Missing / Broken
Metal)
Up to six indications with
0.020 in. (0.51 mm) in
diameter and 0.005 in.
(0.127 mm) maximum
depth. Separation
between indications a
minimum of three times
the smaller indication.
Not Repairable
RD-51-B1-1001
11. Root Bottom & Side
Faces
(Deposits / High
Metal)
Not serviceable
RD-51-B1-1001
Any amount that can be
removed with a wire brush or
Scotch-Brite polish.
12. Root Bottom & Side
Faces (Oxidation /
Corrosion)
Not Serviceable.
RD-51-B1-1001
Any amount that can be
removed with a wire brush or
Scotch-Brite polish.
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6.8.
IC-51-B1-1001
Rev. D
Bucket airfoil wall Thickness Measurement
6.8.1. After Stripping, for Solid Bucket Configuration, it is necessary to measure wall
thickness by Ultrasonic Inspection per SP-32-1001, CMM or caliper where possible.
Measure diameter V and distance W for section D-D, H-H and L-L. Refer to Figure 9
and Table 7 for Acceptance Criteria. Measure Wall Thickness of Section N-N/M-M of
Squealer Tip referring to Figure 10 with indicated related acceptance criteria.
Record measured values on the Inspection Report Document.
6.8.1.1.
In case of Internal NiAl Stripping without reapplication of the Internal
Aluminizing, Measure airfoil wall thickness on 100% of the buckets set
6.8.1.2.
In case of Internal NiAl Stripping with reapplication of the Internal Aluminizing:
Measure airfoil wall thickness of 10 buckets of the set.
Figure 9. Solid Bucket Configuration: Wall Thickness Measurement Section
Table 9. Solid Bucket Configuration: Wall Thickness Acceptance Criteria
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Rev. D
Figure 10. Solid Bucket Configuration:
Squealer Tip Wall Thickness Measurement (Section B-10 (B-6) of SM 48241)
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6.8.2. After Stripping, for Hollow Bucket Configuration, it is necessary to measure wall
thickness by Ultrasonic Inspection per SP-32-1001 or CMM. Measure DIM. XF and
DIM. XG for section K-K, H-H, and G-G. Refer to Figure 10 with Table for Acceptance
Criteria. Use Table in Figure 11 and casting drawings in Table 1 for location
where to perform measurements. Record measured values on the Inspection Report
Document.
6.8.2.1.
In case of Internal NiAl Stripping without reapplication of the Internal
Aluminizing, Measure airfoil wall thickness on 100% of the buckets set
6.8.2.2.
In case of Internal NiAl Stripping with reapplication of the Internal Aluminizing:
Measure airfoil wall thickness of 10 buckets of the set.
SECTION
AIRFOIL
EDGE to
SHANK
DIM. XF
LIMITS
DIM. XG
LIMITS
K–K
0.846
(21.49mm)
0.829
(21.06mm)
0.725
(18.42mm)
N/A
0.045 – 0.065
(1.14 - 1.65mm)
0.045 – 0.065
(1.14 - 1.65mm)
0.065 – 0.085
(1.65 - 2.16mm)
0.093 – 0.113
(2.36 - 2.87mm)
0.165 – 0.185
(4.19 - 4.70mm)
0.230 – 0.250
(5.84 - 6.35mm)
0.045 – 0.065
(1.14 - 1.65mm)
0.045 – 0.065
(1.14 - 1.65mm)
0.065 – 0.085
(1.65 - 2.16mm)
0.093 – 0.113
(2.36 - 2.87mm)
0.165 – 0.185
(4.19 - 4.70mm)
0.200 – 0.250
(5.08 - 6.35mm)
DIM. XF
J–J
H–H
DIM. XG
H1 – H1
G–G
G1 – G1
0.574
(14.58mm)
N/A
Airfoil Edge to
Shank at Section Line
K
K
J
J
H
G
2.400 in.
(60.96 mm)
H
H1
H1
G1
G1
G
1.778 in.
(45.16 mm)
Figure 11. MS5001 Stage 1 Bucket Airfoil Wall Thickness Limits (Hollow Design)
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Repair Engineering Instruction
IC-51-B1-1001
Rev. D
NOTE: Use the latest revision of referenced documents.
7.1. Appendix A - Reference Documents
Document
Title
1. B50A467A
Nickel-Base Alloy - U-500 - Investment Castings
2. B50A524B
Nickel-Base Alloy - U-700 - Investment Castings
3. B50A563
Nickel-Base Alloy - IN-738 - Investment Castings
4. B50A719
Nickel-Base Alloy - GTD-111 - Investment Castings
5. P3A-AG4
Fluorescent Penetrant Testing
6. P23A-AG2
Identification - Turbine / Generator Parts and Materials
7. SP-16-1001
Repair Part Marking Standardization
8. SP-16-1002
Repair Source Substantiation, Qualification, and Quality System
Requirements
9. SP-21-1002
Steam Cleaning
10. SP-21-1003
Dry Abrasive Grit Blast Cleaning
11. SP-23-1002
Advanced Coating Removal (ACR) Repair
12. SP-24-1001
Pre-FPI and Post Strip Grain Etch
13. SP-32-1001
Ultrasonic Inspection - Thickness
14. SP-32-1004
Heat Tint Inspection
15. SP-32-1012
Inspection Terms and Definitions
16. SP-44-1001
Furnace Heat Treatment
17. SIF-13
MS5001 Stage 1 Bucket Residual Life Analysis
7.2. Appendix B - Component Repair Engineering Instructions
Document
Title
1. RD-51-B1-1001
MS5001 Stage 1 Bucket - Full Repair
2. RSS-5M-B1-1001
MS5001 Stage 1 Bucket - Repair Source Substantiation
3. RSS-M-SP-1002
Coating Removal Repair Requirements
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