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22
• LM6000 Operation Data
• Field Events and Service Bulletins
• HPC Stage 3-5 Blades (SB-310)
• D&E Sump Coking
• Sump Evacuation System (SES)
• Compressor Rear Frame (CRF) Oil Manifold
• LP Sprint Damage
• MCD/Lube Oil Analysis
AGENDA
33
LM6000 Ops Data
44
LM6000 Engine Fleet Statistics
© General Electric Company. All rights reserved
(as of July 14th, 2014)
0
200
400
600
800
1000
1200
2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014
570 599 620 633 665 693735 761 787 806 829
112120
140 150177
207
231254
280322
356
LM6000 Fleet Growth
DLE
SAC
55
LM6000 Operating Schemes
66
LM6000 Field Events
(Issued/ Revised 2014/2015)
77
Service Bulletins
88
HPC Blade Events
9
Coating Wear Induced Edge of Contact.
• Investigation findings of these events indicate that there is a correlation between dovetail coating deterioration and EOC (Edge of Contact Cracking).
• Coatings investigated thus far did not yield apparent quality deficiencies, and as such the cause for coating depletion remains “Indeterminate”.
• Additional events around this mode have been identified since last year.
• So what’s being done?
© TransCanada Turbines
© TransCanada Turbines
HPC Blade Events
10
Coating Wear Induced Edge of Contact.
• SB 310 is being introduced which has a Dual Intensity Peening applied to the dovetail roots on stage 3 – 5 blades.
• Pre-Ground kits available for field replacements.
• Repair for older “K” blades expected to be available by Q4 2015.
• New blades are marked with an “H” on the platform.
• K blades still ok for Base Loaded units and can be used in Peakers but will need coating repairs at lower than normal intervals (i.e. prior to normal overhaul)• H blades recommended for Peakers and Load followers.
© TransCanada Turbines
© TransCanada Turbines
HPC Blade Events
1111
SB310 – Soon?
1212
SB310 – Soon?
1313
What is after SB-310?
14
D&E Sump Coking
15
D&E Sump Coking
16
D&E Sump Coking
17
D&E Sump Coking
18
D&E Sump Coking
19
D&E Sump Coking
20
D&E Sump Coking
21
Sump Evacuation System (SES)
22
Sump Evacuation System (SES)
23
CRF Oil Leaks
24
CRF Oil Leaks
2010© MTU Maintenance Berlin-Brandenburg© MTU Maintenance Berlin-Brandenburg
25
CRF Oil Leaks
26
© IHI Corporation
Observed Condition• Abnormally Heavy erosion seen in the VIGV and LPC modules.
Background/New Development• Higher than normal sprint erosion damage seen on Leading Edge of VIGV vanes, Leading of Stage 0 Blades and on rub lands of LPC stator cases.
• LP Sprint rates ranged between 14gpm to 20 gpm for units observed.
• O&M manual reference Sprint schedule as a function of T2 having a water flow range of 5 gpm at T2<40°F and 13.1 gpm at T2 >80°F
LP Sprint Damage
27
© IHI Corporation
Recommended Action/Timing• Monitor condition of Sprint Nozzles and repair when tips are showing signs of wear/erosion.
• Ensure water quality is within OEM specifications.
• Monitor water flow rates and reduce where able.
• Repair/Replace parts once identified as unserviceable either at overhaul or field inspections.
LP Sprint Damage
28
© IHI Corporation
© IHI Corporation
MCD/Lube Oil Analysis
Dear ASP:
While inspecting my finger screens and MCD’s today we found the following. Is my engine sick? What do I do?
Thanks,Concerned Operator
29
© IHI Corporation
© IHI Corporation
Dear Concerned Operator:
Your screwed! Just kidding, please send the samples out to a local lab and have those trusted scientist carry out an analysis and send us the report so we can help you determine best course of action.
Thanks,Helpful ASP
MCD/Lube Oil Analysis
30
© IHI Corporation
© IHI Corporation
Dear ASP:
Ok, I got that report they sent me but those scientist wrote it in code. What does all this crap mean?
Thanks,Concerned Operator
MCD/Lube Oil Analysis
31
Silver – Typically associated with silver plating from spanner nuts and bearing races. Quite soft and generally does not pose an immediate concern.
Aluminum– Typically can be associated with contamination, housing materials and/or some coatings/seal material
MCD/Lube Oil Analysis
32
Chromium– Normally associated gears, gear shafts, bearings and some seals in these oil/MCD reports
Iron– Major alloying element in most components and is inconclusive in itself.
MCD/Lube Oil Analysis
33
Molybdenum– Primary indicator of a bearing issue. Do not operate without further investigation
Sodium, Silicon, Zinc–Normally associated with some form of air/oil/water contamination
MCD/Lube Oil Analysis
34
GE allows up to 1000 ppm for water in oil per WP 4016, however, anything over 300-400ppm it is recommended you identify and remove the source of water ingress into the oil system in advance of hitting the max allowable. High levels of water can lead to corrosion issues on engine hardware that can lead to costly repairs.
NAS rating for Particle count. WP 4016 calls for rating of NAS 7 (or less) which is 17/16/13. Bigger is not better here!! The higher the numbers the more particles of contamination you have.
MCD/Lube Oil Analysis
35
Thank You...Questions?