GE Frame 5 Service Manual

37
A .2) Example 2 – Hot Gas Path Factored 
Starts Calculation
A 7E.03 user has accumulated operating data for the past year of 
operation. This data shows number of trips from part, base, and 
peak load, as well as peaking-fast starts. The user would like to 
calculate the total number of factored starts in order to plan the 
next HGP outage. Figure 43 is used to calculate the total number of 
factored starts as shown below.
Operational history:
Normal  cycles Peaking 
starts with  normal 
shutdowns...

38
B) Examples – Combustion Maintenance
Interval Calculations 
(reference  Figures 40 and  41)
DLN 1 Peak Load with Power Augmentation
+50F Tfire Increase
Factored Hours = Ki * Afi * Api * ti = 34.5 Hours
Hours Maintenance Factor = (34.5/6)5 .8
Where
Ki =2.34 Max(1.0, exp(0.34(3.50-1.00))) WetAfi =1.00 Natural Gas FuelApi =2.46 exp(0.018(50)) Peak Loadti =6.0 Hours/Start
Factored Starts = Ki * Afi * Ati * Api * Asi * Ni = 17.4 Starts
Starts Maintenance Factor = (17.4/1)17 .4
Where
Ki =2.77 Max(1.0,...

39
Reliability: Probability of not being forced out of
service when the unit is needed — includes forced
outage hours (FOH) while in service, while on
reserve shutdown and while attempting to start
normalized by period hours (PH) — units are %.Reliability = (1-FOH/PH) (100)
FOH = total forced outage hours
PH = period hours 
Availability: Probability of being available,
independent of whether the unit is needed – includes
all unavailable hours (UH) – normalized by period
hours (PH) – units are %:...

40
D) Estimated Repair and Replacement Intervals
(Natural Gas Only)
Repair/replace intervals reflect current production hardware, unless 
otherwise noted, and operation in accordance with manufacturer 
specifications. Consult previous revisions of GER 3620 or other unit-
specific documentation for estimated repair/replacement intervals 
of previous generation gas turbine models and hardware. Consult 
your GE service representative for further information.
MS3002K Parts
Repair IntervalReplace Interval...

41
7E .03 (7)
Repair IntervalReplace Interval (Hours) Replace Interval (Starts)
Combustion Liners  Cl 3 (Cl) / 5 (Cl)
(1) 5 (Cl) 
Caps  Cl 3 (Cl)  5 (Cl) 
Transition Pieces  Cl 4 (Cl) / 6 (Cl)
(5) 6 (Cl) 
Fuel Nozzles  Cl 2 (Cl) / 3 (Cl)
(6) 3 (Cl) 
Crossfire Tubes  Cl 1 (Cl) 1 (Cl) 
Crossfire Tube 
Retaining Clips CI
1 (CI)  1 (CI)
Flow Divider 
(Distillate)  Cl 
3 (Cl)  3 (Cl) 
Fuel Pump 
(Distillate)  Cl 
3 (Cl)  3 (Cl) 
Stage 1 Nozzles  HGPI 3 (HGPI)  3 (HGPI) 
Stage 2 Nozzles  HGPI 3 (HGPI)  3...

42
6F .03
Repair IntervalReplace Interval (Hours) Replace Interval (Starts)
Combustion Liners CI2 (CI) 2 (CI)
Caps CI3 (CI) 2 (CI)
Transition Pieces CI3 (CI) 2 (CI)
Fuel Nozzles CI2 (CI) 2 (CI)
Crossfire Tubes CI1 (CI) 1 (CI)
Crossfire Tube 
Retaining Clips CI
1 (CI) 1 (CI)
End Covers CI
4 (CI) 2 (CI)
Stage 1 Nozzles HGPI2 (HGPI)  2 (HGPI)
Stage 2 Nozzles HGPI2 (HGPI)  2 (HGPI)
Stage 3 Nozzles HGPI3 (HGPI) 3 (HGPI) 
Stage 1 Shrouds HGPI2 (HGPI) 2 (HGPI) 
Stage 2 Shrouds HGPI2 (HGPI) 2 (HGPI) 
Stage 3...

43
9F .03
Repair IntervalReplace Interval (Hours) Replace Interval (Starts)
Combustion Liners Cl 2 (Cl)  3 (Cl) 
Caps  Cl 2 (Cl)  3 (Cl) 
Transition Pieces  Cl 2 (Cl)  3 (Cl) 
Fuel Nozzles  Cl 2 (Cl)
(1)  3 (Cl)(1) 
Crossfire Tubes  Cl 1 (Cl)  1 (Cl) 
Crossfire Tube 
Retaining Clips CI
1 (CI)  1 (CI)
End Covers  CI 2 (Cl)  3 (Cl) 
Stage 1 Nozzles  HGPI 2 (HGPI)  2 (HGPI) 
Stage 2 Nozzles  HGPI 2 (HGPI)  2 (HGPI) 
Stage 3 Nozzles  HGPI 3 (HGPI)  3 (HGPI) 
Stage 1 Shrouds  HGPI 2 (HGPI)  2 (HGPI) 
Stage 2...

44
Compressor
15th, 16th, 17th Stag e
Compressor 0-6th Stage
24.5°
24.5°
24.5° 24.5°
99.5°
204.5°
9.8°
100.5°
170.2° 10.5°
100.5°
160.5° 9.73°
189.73°
12°
102°
155°
24.5°
1st Stg. LE1st Stg. TE2nd Stg. LE2nd Stg. TE3r d Stg. LE- Turbine
Primary Inspection Access 
(Normal Inspection)
Secondary Inspection Access 
(Additional Stators and Nozzles)
Figure E-1 . Borescope inspection access locations for 6F machines
Compressor
14th, 15th, 16th Stag e
Compressor 0-5th Stage
25°
25°
25° 66°
13° 15° 151° 66°...

45
F) Turning Gear/Ratchet Running Guidelines
Scenario Turning Gear 
 
(or Ratchet) Duration
Following Shutdown:
Case A.1 – Normal.  
Restart anticipated for >48 hours Until wheelspace temperatures 

46
G) B/E- and F-class Gas Turbine Naming
Class PlatformModel 
DesignationPrior model 
seriesPrior model 
number
Prior names
F-class 6F
-
MS6001(FA)6101(FA)
6FA.01 6FA
6F.03 6111(FA)
6FA.03 6FA+e
- --6F Syngas-
7F -
MS7001(FA)7221(FA)
7FA.01 7FA
- 7231(FA)
7FA.02 7FA+
7F.03 7241(FA)
7FA.03 7FA+e
7F.04 -
7FA.04 -
- MS7001(FB) 7251(FB)
7FB.01 -
- --7F Syngas-
9F -
MS9001(FA)9311(FA)
9FA.01 9FA
- 9331(FA)
9FA.02 9FA+
9F.03 9351(FA)
9FA.03 9FA+e
-
MS9001(FB)9371(FB)
9FB.01 -
- -
9FB.02 -
9F.05 -
9FB.03 -...