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GEK 97310 VOLUME I ADDENDUM I

ADDENDUM I

INDUSTRIAL GAS TURBINE MODEL 7LM2500PC101B

GE PROPRIETARY PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page. UNCONTROLLED WHEN PRINTED OR TRANSMITTED ELECTRONICALLY

UNCONTROLLED WHEN PRINTED OR TRANSMITTED ELECTRONICALLY

GEK 97310 VOLUME I ADDENDUM I TABLE OF CONTENTS Paragraph 1-0 2-0 3-0 4-0 5-0 6-0 6-1. 6-1.1 1 7-0 8-0 8-1 8-1. 8-1.1 1 8-1. 8-1.2 2 8-2 8-2. 8-2.1 1 8-2. 8-2.2 2 8-2. 8-2.3 3 8-2. 8-2.4 4 8-2. 8-2.5 5 8-2. 8-2.6 6 8-2. 8-2.7 7 8-2. 8-2.8 8 8-2. 8-2.9 9 8-2.10 8-2.10 8-2. 8-2.1 11 8-2. 8-2.12 12 8-2. 8-2.13 13 8-2. 8-2.14 14 8-2. 8-2.15 15 8-3 8-3. 8-3.1 1 8-3. 8-3.2 2 8-3. 8-3.3 3 8-4 8-4. 8-4.1 1 8-4. 8-4.2 2

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INTRODUCTION ....................................................................................... REFERENCE DATA .................................................................................. INSTALLATION DRA DR AWINGS .................................................................. EQUIPMENT DESCRIPTION ................................................................. INSTRUMENTATION AND SUPPLY REQUIREMENTS ................... SERVICE REQUIREMENTS ...................................................................

Natu Natura rall Gas Gas ..... ....... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .. OPTIONAL HARDWARE HARDWARE KITS - 7LM2500PC101B ............................ GAS TURBINE OPERATION OPERATION .................................................................. PERFORMANCE RATINGS AND OPERATING OPERATING LIMITS LI MITS .................. Perfo Perform rman ance ce Rati Rating ngss ..... ....... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ... Oper Operat atin ing g Limi Limits ts .... ...... .... ..... ..... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... ..... ..... .... .... ..... ..... .... .... ..... ..... .... .... ..... ..... .... .... .. INITIAL OPERATION OPERATION .............................................................................. Gener General.... al...... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .. Spec Specia iall Inst Instru rume ment ntat atio ion n Requ Requir ired ed for for Ope Opera rati tion on .... ...... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .. Spec Specia iall Inst Instru rume ment ntat atio ion n Requ Requiired red for for Moni Monito torring ing and and Tr Troubl oubles esho hoot otin ing... g..... .... Prep Prepar arat atio ion n ..... ....... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .. Gas Gas Tur Turbi bine ne and and Ass Assoc ocia iate ted d Equ Equip ipme ment nt Chec Check k Lis List. t... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .. Gove Govern rnor or and and Manua Manuall Contr Control ol Chec Check... k..... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .... .. Star Startt-up up and and Check Checkout. out... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .. Igni Igniti tion on Check... Check..... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... Moto Motori ring. ng... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... False False Start... Start....... ....... ...... ....... ....... ...... ....... ....... ...... ....... ....... ...... ....... ....... ...... ....... ....... ...... ...... ....... ....... ...... ....... ....... ...... ....... ....... ...... ....... ...... .. Gover Governor nor Check Check .... ...... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... Wet Pres Presta tart rt .... ....... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... Manua Manuall Star Startt and and Opera Operati tion on ..... ....... .... .... ..... ..... .... .... ..... ..... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... ..... ..... .... .. Oper Operat atio ion n to Max Maxim imum um Powe Power.. r.... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... Auto Automa mati ticc Oper Operat atio ion.... n....... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... NORMAL OPERATION............................................................................ Gener General.... al...... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .. Inte Interl rloc ocks.. ks.... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .. Oper Operat atio ion... n..... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .. EMERGENCY OPERATION ................................................................... Emer Emergen gency cy Shutd Shutdow own n .... ....... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... .... .. Post Post Shut Shutdo down wn Fire Fire .... ...... .... ..... ..... .... .... .... ..... ..... .... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..

I-3 I-3 I-3 I-3 I-4 I-6 I-6 I-6 I-6 I-7 I-7 I-11 I-15 I-15 I-15 I-15 I-16 I-16 I-17 I-17 I-19 I-19 I-19 I-20 I-20 I-20 I-27 I-28 I-28 I-28 I-28 I-28 I-29 I-29 I-29

Change 4 GE PROPRIETARY PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page. UNCONTROLLED WHEN PRINTED OR TRANSMITTED ELECTRONICALLY

I-1

GEK 97310 VOLUME I ADDENDUM I LIST OF ILLUSTRATIONS Figure 1 2 3

Title

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Trans ransie ient nt Temper emperat atur uree Limi Limits... ts..... .... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... .... I-8 Deleted Typical ypical Accel Acceler erat atio ion n Fuel Fuel Flo Flow w Sche Schedul dulee .... ...... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... I-10

LIST OF TABLES Table 1 2 3 4 5 6 7

I -2

Title

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INST INSTRU RUME MENT NTA ATION TION CON CONNE NECT CTIO IONS NS - 7LM 7LM25 2500 00PC PC10 101B.. 1B.... .... .... .... .... .... .... .... .... .... .... .... .... .. SUPPL SUPPLY Y CONN CONNEC ECTI TION ONS S - 7LM250 7LM2500P 0PC1 C101B.. 01B.... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .. GAS GAS TURB TURBIN INE E OPER OPERA ATING TING LIM LIMIT ITS.. S.... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... PRES PREST TART ART CHEC CHECKS KS .... ...... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ... STAR START T-UP -UP AND AND OPER OPERA ATION TION ..... ....... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .. GAS GAS TUR TURBI BINE NE SHUT SHUTDO DOWN WN .... ...... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... ..... ..... .... .... .... ..... ..... .... .... .. EMER EMERGE GENC NCY Y SHUT SHUTDO DOWN.. WN..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... ..... ..... .... .... .... .... ..... ..... .... .... .... ..... ..... .... .... ..

I-4 I-5 I-11 I-18 I-22 I-26 I-27

Change 4 GE PROPRIETARY INFORMATION INFORMATION - Subject to the restrictions on the cover or first page. UNCONTROLLED WHEN PRINTED OR TRANSMITTED ELECTRONICALLY

GEK 97310 VOLUME I ADDENDUM I 1-0

INTRODUCTION.

The information contained herein describes the 7LM2500PC101B model gas turbine basic configuration and control system differences. In addition, the coverage of reference data, instrumentation and supply connections, special servicing requirements, optional hardware kits and the complete gas turbine operating instructions for the 7LM2500PC101B model are included. 2-0

REFERENCE DATA.

EQUIPMENT Gas Turbine Assembly (General Electric Co., Cincinnati, Ohio) Model No. 7LM2500PC101B Dwg. No. L24290G03

Combustor

120 (54)

High Pr Pressure Tu Turbine Ro Rotor

419 (1 (190)

High Pressure Turbine Nozzle, Stage-1

68 (31)

High Pressure Turbine Nozzle, Stage-2

127 (58)

Turbine Mid Frame

530 (240)

Low Pressure Turbine Rotor

1095 (497)

Low Pr Pressure Tu Turbine St Stator

601 (2 (273)

Turbine Rear Frame

1071 (486)

High Speed Coupling Shaft Forward Adapter

91 (41)

Vari Variab able le Stat Stator or Actu Actuat atin ing g Mech Mech

19 (9) (9)

Outs Outsid idee Pipi Piping ng and and Brac Bracke keti ting ng

278 278 (126 (126))

DRAWING LIST Drawing No.

PERFORMANCE RATING Refer to paragraph 8-1. GAS TURBINE WEIGHTS The average weights of the major gas turbine components are: Component

Wt-Lbs/(Kg)

Gas turbine - including inlet duct, centerbody, exhaust diffuser, and coupling nut 7396 (3355) Gas Generator

4212 (1911)

Power Turbine

2777 (1260)

Inlet Gearbox

38 (17)

Transfer Gearbox

245 (111)

Compressor Front Frame

517 (235)

Compressor Rotor

552 (250)

Compressor Stator, Front

307 (139)

Compressor Stator, Rear

93 (42)

Compressor Rear Frame

421 (191)

Gas Tu Turbine In Installation Dw Dwg

L31705

Fuel System Flow Diagram

L24327

Lubrication System Flow Dia

L24328

Electrical Diagram

L24329

Ignition Units

L21454P02

Gas Turbine Assembly Dwg

L24290G03

3-0

INS IN STALLAT LATION DRA DRAWINGS.

A complete set of installation drawings have been provided. 4-0

EQUIPMENT DES DESCRIPTION.

The 7LM2500PC101B is a natural gas fired, nonmarinized gas turbine. An exhaust duct is not furnished as standard equipment; however, the gas turbine is provided with an exhaust duct inner diffuser.


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GEK 97310 VOLUME I ADDENDUM I 5-0 INSTRUMENTATION AN AND SUPPLY REQUIREMENTS.

See tables 1 and 1 and 2. Table 1.

INSTRUMENT INSTRUMENTA ATION CONNECTION CONNECTIONS S - 7LM2500PC101B 7LM2500PC101B

Item

Nomenclature

Mates with:

E1

Vibration pi pickup, Ga Gas Ge Generator

Bell & Howell Electronics Part No No. 17 173960 or or 364450

E2

Power turbine inlet temperature

MS3106-14S-9S

E3

A-sump scavenge oil temperature

MS3106R12S-3S

E4

B-sump sc scavenge oi oil te temperature

MS3106Rl2S-3S

E5

C-sump sc scavenge oi oil te temperature

MS3106R12S-3S

E6

Accessory Gearbox scavenge oil temperature

MS3106R12S-3S

E11

Oil supply temperature

MS3106Rl2S-3S

E18

D-sump scavenge oil temperature

MS3106Rl2D-3S

E7

Gas generator speed pickup No. 1

MS3106R10SL-4S

E12

Gas generator speed pickup No. 2

MS3106R10SL-4S

E13 E13

Vibra ibrattion ion pick pickup up,, powe powerr turbi urbine ne

Bel Bell & Howe Howell ll Elec Electr tron oniics Par Part No. No. 1739 173960 60 or 364450

E14

Power turbine speed pickup No. 1

MS3106-10SL-4S

E15

Power turbine speed pickup No. 2

MS3106-10SL-4S

A13

Power turbine inlet pressure probe (optional)

AN818-6C or MS20819-6C

A23

CDP pressure port (optional)

.500-20UNJF

A18

CIT sensor (part of fuel control system)

F3

Natural gas fuel manifold pressure tap (optional)

MS33656-4

L5

Lube supply pressure tap

AN818-6C or MS20819-6C

L7

Lube sc scaven venge pr press essure ta tap (o (optional)

AN818-4 8-4C or MS20819 819-4C

--

Remote read eading var variable stato ator vane protractor (optional)

E10

Starter speed switch (optional)

E16

Gas turbine electrical bond, left

E17

Gas turbine electrical bond, right

MS3106-10SL-4S

NOTE For all other instrumentation connections, refer to Installation Drawings provided with gas turbine. I -4


GEK 97310 VOLUME I ADDENDUM I Table able 2. Item

SUPPL SUPPLY Y CONNE CONNECTI CTIONS ONS - 7LM25 7LM2500P 00PC101 C101B B

Nomenclature

Mates with: CAUTION

ALL LINES MUST BE FLEXIBLE ENOUGH TO ALLOW 3/4 INCH THERMAL GROWTH OF GAS GENERATOR WITHOUT PLACING STRAIN ON LINES OR ON GAS GENERATOR. GENERATOR. F1

Natural gas supply

2 inch line from Fuel Control Unit to Gas Generator Fuel Manifold

L1

Lube Oil Supply

1-1/2 inch line to Lube Pump on Gas Generator AN818-24C or MS20819-24C

L2

Lube pump discharge

1 inch line from Lube Pump to Oil Supply Filters AN818-16C or MS20819-16C

L4

Lube supply inlet port

1 inch line from Oil Supply Filters to Gas Generator AN818-16C or MS20819-16C

L3

Scavenge oil discharge

1-1/4 inch line from Gas Generator Scavenge Pump to Oil Scavenge Filter and Cooler AN818-20C or MS20819-20C

A2

Bleed air

16th stage compressor bleed air lines if used

A4

Inlet duct seal

(If required)

A10

CDP seal leakage No. 1

(If required) 2-inch line

A11

CDP seal leakage No. 2

(If required) 2-inch line

A12

Air/Oil Separator

3 inch line from air/oil separator to atmospheric vent or to exhaust duct (flame arrestor)

D3

Oil drain, forward

AN818-6C or MS20819-6C

D5

Oil drain, aft

AN818-6C or MS20819-6C

S1

Waterwash manifold

1 inch line - hot water line to waterwash manifold on Gas Generator Inlet Duct AN818-16C or MS20819-16C

NOTE For all other supply connections, refer to Installation Drawings provided with gas turbine.


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GEK 97310 VOLUME I ADDENDUM I 6-0

6-1.1

SERVICE REQ REQUIREMENTS.

Natural Gas.

a. The requir required ed suppl supply y press pressure ure to the the fuel manifold on the gas turbine is 350 ± 5 psig (2415 ± 35 kPa). b. The temperature of the gas must be in the range of -65° to +150°F (-54° to +66°C). If the temperature is not repeatable on a day-today basis it will be necessary to change the starting fuel adjustment to adjust the supply pressure to the engine to maintain a constant Btu-per-cubic-foot supply. supply. Once started, the engine will accept variations in supply temperature of ±20°F (±11°C). The maximum fuel flow required is 13,400 pph (6078 kg/h) with a lower heating value of 19, 000 Btu/lb. 7-0 OPTION IONAL HA HARDWARE KIT KITS S7LM2500PC101B.

a. Refer Refer to Volum olumee II, II, WP 001 00 for 00 for a detailed list of optional kits available for this particular gas turbine model. 8-0

c. It is is possib possible le that that thes thesee instru instructi ctions ons may not provide for every possible variation in equipment or contingency to be met in connection with the operation of the gas turbine. Refer requests for additional information to the General Electric Company, Marine and Industrial Engine Division, Cincinnati, OH 45215. WARNING IF A QUESTIONABLE CONDITION EXISTS, DO NOT OPERATE THE GAS TURBINE UNTIL A THOROUGH INVESTIGATION HAS BEEN MADE. DO NOT REPEAT HOT STARTS, COMPRESSOR STALLS, OR OTHER RECOGNIZED PROBLEMS WITHOUT PRIOR THOROUGH INVESTIGATION. FAILURE TO DO SO CAN RESULT IN UNDUE STRESS BEING IMPOSED ON GAS TURBINE COMPONENTS, WITH IMMEDIATE OR SUBSEQUENT DESTRUCTIVE FAILURE OF THE GAS TURBINE AND INJURY TO PERSONNEL.

GAS TURBIN INE E OPERATIO TION.

NOTE a. These These instru instructi ctions ons cont contain ain the the gas gas turtur bine operating procedures and limits recommended by the General Electric Company for the 7LM2500PC101B Gas Turbine. b. The instructions are intended to provide operating personnel with the information required to operate the gas turbine. They pertain to routine and emergency conditions and procedures. When a fault exists, refer to Volume I, Chapter 4, 4, Troubleshooting.

I -6

The S. I. units shown in this addendum are direct mathematical conversions and may be rounded off in most instances at the user’s discretion. Examples of units that may be rounded off are those utilized for temperatures, torque values, pressures, etc. Examples where S.I. units may not be rounded off are those utilized for drop checks, rigging adjustments, runouts, etc.


GEK 97310 VOLUME I ADDENDUM I 8-1 8-1 PERF PERFOR ORMA MANC NCE E RA RATING TINGS S AND AND OPERATING OPERATING LIMITS.

Power Power Turbi urbine ne Inle Inlett Gas Gas Temperature Avg.

NOTE Ratings published in this manual apply to the gas turbine. The driven unit ratings/ limits may be lower in some cases and shall take precedence over the gas turbine manual limits. 8-1. 8-1.1 1

Perf Perfor orm mance ance Ratin atings gs..

a. The rate rated d perf perfor orma manc ncee of the the 7LM2500PC101B gas turbine in the new and clean conditions is as follows: • Brak Brakee Hors Horsep epow ower er - Continuous

27,500 BHP

- Maximum

30,000 PHM

• Heat Ra Rate, Av Avera erage (Continuous) Heat Heat Rate Rate,, Avera verage ge (Maximum)

689 6895 Btu/HP-hr

6876 6876 Btu/ Btu/HP HP-h -hr r

Based on the following conditions: Inlet Air Temperature

59°F

Altitude

Sea Level

Inlet Losses

0” H2O

Exhaust Losses

0” H2O

Relative Humidity

0%

Compressor Bleed

0

Accessory Power Extraction

0

Power Turbine Speed

3600 rpm

1408° 1408°F F at at 275 27500 00 BHP 1481°F at 30000 BHP

b. Approximate starting fuel fuel flow requirements based on applying fuel and ignition at 1200 rpm are: 465 pph (211 kg/h) ± 25 pph (11 kg) @ -65°F (-54°C) Inlet Air Temperature 550 pph (250 kg/h) ± 25 pph (11 kg) @ +60°F (+16°C) Inlet Air Temperature 595 pph (270 kg/h) ± 25 pph (11 kg) @ +130°F (+54°C) Inlet Air Temperature c. Typical ypical tran transie sient nt fuel fuel flow flow requir requireements are shown in Acceleration Fuel Schedule, figure 3. 3. d. Deleted e. Acceler Accelerati ation on fuel fuel rates rates grea greater ter than than those shown will result in over-temperature and possible stall of the gas turbine. Acceleration fuel rates lower than those shown can result in “hung” starts in the below idle speed range. f. Above Above the the idle idle speed speed poin point, t, low accelacceleration fuel rates will not harm the gas turbine and will only result in slower acceleration times. g. For norm normal al accel accelera eratio tions ns from from idle idle to to power settings the changes should be made more slowly to enhance the time between hot section repairs and the life of the gas turbine; a time of 2 to 3 minutes is reasonable.


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Figure Figure 1. I -8

Trans Transien ientt Temp Tempera eratur turee Limi Limits ts



Figure 2.

Deleted


I-9


Figure Figure 3. 3. I-10

Typical ypical Accel Accelera eratio tion n Fuel Fuel Flow Flow Schedul Schedulee


GEK 97310 VOLUME I ADDENDUM I h. The fuel fuel rate rate shown shown on on the the curve curve will will give starting times to 5000 rpm idle of 60 to 90 seconds and accelerations from idle to maximum power of 15 seconds. i. The The maxi maximu mum m decel deceler erat atio ion n fuel fuel flo flow w rate should consist of a step fuel decrease o f 1500 pph (680.4 kg ph) ± 10% pph followed by a rate change of 1330 pph (604 kg ph) ± 10% per second to idle fuel flow. Rates greater than this can cause the engine to lose fire. Normal decelerations from maximum power to idle should be made in approximately 2 to 3 minutes - this will enhance the time between hot section repairs and the life of the gas turbine. Table able 3. Type

Parameter

8-1. 8-1.2 2

Oper Operat atin ing g Limi Limits ts.. Refe Referr to table 3. 3. NOTE

If any operating limit is exceeded, verify instrumentation accuracy before troubleshooting or inspecting gas generator.

GAS TURBIN TURBINE E OPERA OPERATIN TING G LIMIT LIMITS S Alarm/ Trip Setting

Normal Operati Operating ng Range Range Remark Remarkss

NOTE • Continuous Continuous operation operation should should not take place place with any parameter parameter indicat indicating ing between between the alarm and trip levels. If an alarm level is not shown, the trip level is the operating limit. • Correct Correct lube lube pressur pressures es per per applicabl applicablee table table in Chapter 5. 5. Lubrication Gas Turbine System Lube Supply Settings and Pressure Operating Ranges

Alar Alarm m 8 psi psig g ± 1 psi psig g 20 - 60 psig (55 kPa ± 6.9 kPa) (138 - 413 kPa) below 8000 rpm. 15 psig ± 1 psig (103 kPa ± 6.9 kPa) above 8000 rpm

Bypass until 4500 4500 rpm rpm

Gas Turbine Lube Supply Pressure

Trip

Bypass until 4500 4500 rpm rpm

Gas Turbine Scavenge Discharge Pressure

Alar Alarm m 110 psig psig ± 10 10 psi psig g 10 - 100 psig (759 kPa ± 69 kPa) (69 - 690 kPa)

6 psig ± 1 psig 20 - 60 psig (41 kPa ± 6.9 kPa) (138 - 413 kPa)

Scavenge Discharge Pressure shall not exceed 180 psig (1242 kPa)


I-11

GEK 97310 VOLUME I ADDENDUM I Table able 3. Type

GAS TURB TURBINE INE OPER OPERA ATING TING LIMITS LIMITS - (Con (Cont.) t.) Alarm/ Trip Setting


Gas Turbine Lube Supply Temperature

Alar Alarm m 180° 180° - 220 220°°F (82° - 104°C)

140° - 160°F (60° - 71°C)

Normal Operating Range reflects temperature expected during operation above idle speed

Gas Turbine Lube Scavenge Temperatures Five

Trip

215° - 275°F (102° - 135°C)

Normal Operating Range reflects temperature expected during operation above idle speed

20-355 psig (138-2448 kPa)

Supply Pressure as reflected at the fuel manifold inlet on the gas turbine

-65° to 150°F (-54° to 66°C)

Starting Fuel Flow Adjustments may be required to com pensate for fuel temperature variation

40 psig (276 kPa)

Starting Pressure Requirement based on engine starter torque requirements

Parameter

330° - 350°F (166° - 177°C)

Alar Alarm m 290° 290° - 310 310°°F (143° - 154°C) Fuel System (Natural Gas)

Fuel Manifold Pressure

Fuel Supply Temperature

Starting System

I-12

Alar Alarm m 150° 150° - 170 170°° F (66° - 77°C)

Starter Supply Pressure

Application of Fuel and Ignition

1200 ± 100 rpm

Application of Fuel and Ignition (If purge cycle is used)

1700 ± 100 rpm

1700 ± 100 rpm for start after purge cycle



GAS TURB TURBINE INE OPER OPERA ATING TING LIMITS LIMITS - (Con (Cont.) t.)

Parameter

Power Turbine Inlet Tem perature (Natural Gas)

Alarm/ Trip Setting


Starting Time to 1200 rpm

Trip

1200 ± 100 rpm

Activate 20 seconds time delay simultaneously with start initiation

Failure to Light-Off

Trip

380° - 420°F (193° - 216°C)

Activate 20 seconds time delay simultaneously with application of fuel and ignition

Starting Time to 4500 rpm

Trip

4500 ± 200 rpm

Activate 90 seconds time delay simultaneously with start initiation. De-energize ignition, fuel system and starter air supply

Starting Time to 4500 rpm (If purge cycle is used)

Trip

4500 ± 100 rpm

Activate 60 seconds time delay upon completion of purge. Deenergize fuel and ignition systems and starter air supply

Failure to Light- Trip Off

380° - 420°F (193° - 216°C)

0 - 1600°F (18° - 871°C)

Trip if temperature does not reach 400°F (204°C) within 20 seconds after fuel and ignition are applied


I-13


Parameter

GAS TURB TURBINE INE OPER OPERA ATING TING LIMITS LIMITS - (Con (Cont.) t.) Alarm/ Trip Setting

Over Overte temp mper erat atur uree Trip rip

1450°F (788°C)

Normal Operati Operating ng Range Range Remark Remarkss 1378° - 1438°F (748° - 781°C)

Values given are for installations using constant T5.4 control as the power limit. Installations using constant power control mode should consult the contract documents for determining alarm and trip settings, which are unique to each application, but never to exceed 1616°F (880°C) (alarm) and 1625°F (885°C) (trip)

Alarm 1438°F (781°C)

Vibration

Speed

Loss of Flame

I-14

Gas Generator

Trip 7 mils ± 1 mil DA Alarm 4 mils ± 1 mil DA

0 - 3 mils DA

Avoid continuous operation over 4 mils

Power Turbine

Trip 10 mils ± 1 mil DA 0 - 6 mils DA Alarm 7 mils ± 1 mil DA

Avoid continuous operation over 7 mils

Gas Generator

Trip

9950 ± 50 rpm

0 - 9850 rpm

Power Turbine

Trip

3960 ± 40 rpm

0 - 3600 rpm

Combustor Flame

Close and lock out fuel shutoff valve upon loss of flame


GEK 97310 VOLUME I ADDENDUM I 8-2 8-2

INIT IN ITIA IAL L OPER OPERA ATION TION..

8-2. 8-2.1 1 Gene Genera ral. l. Init Initia iall oper operat atio ional nal peri period od is that period of operation immediately following gas turbine replacement or major maintenance on the system. 8-2. 8-2.2 2 Spec Specia iall Inst Instru rume ment ntat atio ion n Requ Requir ired ed for for Operation. Gas Gas gene genera rato torr spee speed d sens sensor or

0-10 0-10,0 ,000 00 rpm rpm

Lube oil scavenge temperature 0-400°F sensors (A-, B-, C-, D-sumps (-18 to 204°C) and transfer gearbox) Lube oil supply temperature sensor

0-400°F (-18 to 204°C)

Vibration indicators gas generator

0-3 in/sec or 0-10 mil DA

power turbine

0-3 in/sec or 0-10 mil DA

Powe Powerr turb turbin inee spee speed d sens sensor or

0-50 0-5000 00 rpm rpm

Power turbine inlet gas tem perature (T5.4)

0-2000°F (-18 to 1093°C)

Lube oil supply pressure

0-100 psig (0-690 kPa)

8-2.3 8-2.3 Speci Special al Inst Instru rume ment ntat atio ion n Requi Require red d for for Monitoring and Troubleshooting: Fuel manifol manifold d pressure pressure sensor 0-400 psi (0-2760 kPa) Compressor inlet total pressure sensor

10-16 psia (69-111 kPa)

Power turbine inlet gas pressure

0-75 psia (0-518 kPa)

Compressor discharge pressure

0-300 psig (0-2070 kPa)

Fuel supply pressure

0-400 psig (0-2760 kPa)

Fuel supply temperature

0-250°F (-18 to 121°C)

Gas turbine inlet air temperature

0-150°F (-18 to 66° C)

Lube Lube oil oil sca scave veng ngee pr press essure ure

0-10 0-100 0 ps psig (0-690 kPa)

Remote reading variable vane -5° to +45° indicator Starter air supply pressure (optional)

0-50 psig (0-345 kPa)


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GEK 97310 VOLUME I ADDENDUM I 8-2. 8-2.4 4 Prep Prepar arat atio ion. n. The The gas gas turb turbin inee and and associated systems must be inspected and checked out for proper installation and operation before normal operation can commence. 8-2. 8-2.5 5 Gas Gas Tur Turbi bine ne and and Ass Assoc ocia iate ted d Equi Equippment Check List. Complete the following check list.

k. Gas Gas turb turbin inee inle inlett air air area area free of foreign objects. Inlet screen secure _________ l.

Gas Gas turb turbin inee compr compres esso sorr rear rear frame leakage ports, struts 7 and 10, are open (not capped) _________

a. Gas Gas Turbi urbine ne Asse Assemb mbly ly S/N S/N ____ ______ ____ ___ _

m. Start Starter er is serv service iced d per PackPackager ’s manual _________

b. Mounting base secured to foundation

n. Lube Lube oil oil stor storage age tank tank ser ser-viced to full level

c. Inta Intake ke air air and and exhau exhaust st gas gas duct ductss in in plac placee and and secu secure red d

_________

o. Lube Lube oil oil sup suppl ply y valv valves es ope open n ____ ______ ____ ___ _ ____ ______ ____ ___ _

d. Bond Bondin ing g str straps aps in pla place ce and and secure _________ e. Gas Gas turb turbin inee and and exha exhaus ustt duct support mounts and links in in pl place and secur cure f.

All All serv servic icee conn connec ecti tion onss made and secure

_________

p. All filters are serviced per Packager’s manual

_________

q. Fire Fire ala alarm rm/e /ext xtin ingui guish sh sys sys-tem ON and operative

_________

r.

T5.4 T5.4 the therm rmoc ocou oupl plee syst system em functioning properly

_________

s.

Ignition sy system op operative

_________

t.

Comp Compre ress ssor or inle inlett tota totall pres pres-sure probe aligned properly and free of damage _________

______ ______ _________

g. All All lin lines es hav havee been been flu flush shed ed per Packager’s manual _________ h. All All instr instrum ument entat atio ion n conne connecctions made and secure _________

u. Variabl ariablee stat stator or vane vane syst system em secure _________

i.

v. Requ Requir ired ed chec checks ks and and inspections specified in Packager’s manual for gas turbine control have been performed

All All acce access ssor orie iess are are secu secure re per Packager’s manual

j.

I-16

Gas turbine assembly free of loose objects and all lines/electrical leads connected

_________

_________

_________


GEK 97310 VOLUME I ADDENDUM I 8-2. 8-2.6 6 Gove Govern rnor or and and Manu Manual al Cont Contro roll Check. Refer to to Packager’s manual.

•

ALLO ALLOW W THE THE GAS GAS TUR TURBI BINE NE TO COOL DOWN. AVOID CONTACT WITH HOT PARTS, AND WEAR THERMALLY INSULATED GLOVES AS NECESSARY.

WHEN ENTERING THE GAS TURBINE ENCLOSURE, THE FOLLOWING REQUIREMENTS SHALL BE MET:

•

EAR EAR PRO PROTE TECT CTIION SHA SHALL BE WORN IF GAS TURBINE IS OPERATING.

•

THE THE GAS GAS TURB TURBIINE SHAL SHALL L BE BE SHUT DOWN.

•

•

ENCL ENCLOS OSUR URE E ENTR ENTRY Y DURI DURING NG ENGINE OPERATION IS PROHIBITED IN GENERAL. IF ENTRY SHOULD BE REQUIRED DURING ENGINE OPERATION, CONTACT GE FIELD SERVICE SERVICE FOR A REPRESENTATIVE WHO IS TRAINED TO ENTER THE ENCLOSURE UNDER SUCH CONDITIONS.

DO NO NOT RE REMAIN IN IN TH THE ENCLOSURE OR IN THE PLANE OF ROTATION OF THE STARTER STARTER WHEN WH EN STARTING OR MOTORING THE GAS TURBINE.

8-2. 8-2.7 7

Star tart-up t-up and and Chec Checko kout ut.. WARNING

•

•

•

THE THE FIRE FIRE EXTI EXTIN NGUI GUISHIN SHING G SYSTEM SHALL BE MADE INACTIVE ACCORDING TO THE CUSTOMER’S PROCEDURES. SECO SECOND NDAR ARY Y AIR AIR TO THE THE ENCLOSURE SHALL BE SHUT OFF. HIGH SECONDARY AIRFLOW MAY MAY PREVENT OPENING OR CLOSING THE ENCLOSURE DOOR. THE EN ENCLOSURE DO DOOR SHALL BE KEPT OPEN. IF THE GAS TURBINE IS OPERATING, AN OBSERVER SHALL BE STATIONED AT THE ENCLOSURE DOOR AND CONFINED SPACE ENTRY PROCEDURES SHALL BE FOLLOWED.

a. When When enter entering ing enclosu enclosure re at at or below below idle speed, wear proper ear protection. b. Perform prestart checks per Table 4. 4. c. Perf Perfor orm m igni igniti tion on check checkou outt per paragraph 8-2.8. d. Perfor Perform m moto motorin ring g proc procedu edure re per paragraph 8-2.9. e. Perf Perfor orm m fal false se star startt per per paragraph 8-2. 10. f. Perf Perfor orm m gover governo norr check check per paragraph 8-2.11. g. Perf Perfor orm m a wet wet pre prest star artt per per paragraph 8-2.12. h. Perfor Perform m a manual manual start start and and opera operate te per per paragraph 8-2.13. i. Oper Operat atee to to max maxim imum um powe powerr per per paragraph 8-2.14. j. Check automatic operation per paragraph 8-2.15.


I-17

GEK 97310 VOLUME I ADDENDUM I Table able 4. 4.

PRES PREST TART ART CHEC CHECKS KS

Item

Requirement

Maintenance requirements and discrepancies

Cleared

Fuel valves

Closed

Ignition

Off

Oil tank level

Full

Lube oil supply valves

Open

Lube oil temperature

140° F to 160°F (60° to 71° C)

Bleed air valve (if used)

Closed

Water wash supply

Closed

Fuel supply pressure

350 ± 5 psig (2413 ± 35 kPa)

temperature

-65 to 150°F (-54° to 66°C)

flow

13,400 ppg (6078 kg/h) max

I-18


GEK 97310 VOLUME I ADDENDUM I 8-2.8

Ignition Check.

8-2. 8-2.9 9 Moto Motori ring ng.. Afte Afterr all all prel prelim imin inar ary y checks have been completed and lines flushed, motor gas generator as follows:

WARNING •

•

a. Make Make ignit ignition ion and natura natural-g l-gas as supp supply ly systems inoperative as follows:

ASSU ASSURE RE POWE POWER R TO IGNI IGNITI TION ON SYSTEMS IS OFF WHEN DISCONNECTING AND CONNECTING IGNITION EXCITER INPUT LEAD. TAG SWITCH “OUT OF SERVICE” TO PRECLUDE INADVERTENT ACTIVATION.

(1) Disconn Disconnect ect power power suppl supply y to to igni igni-tion unit.

ASSU ASSURE RE FUEL FUEL VALV VALVES ES ARE ARE CLOSED THROUGHOUT THIS PROCEDURE.

b. Depress MOTORING MOTORING pushbutton. Gas generator will start to rotate. If it does not, refer to packager’s manual for supply pressure to starter.

a. To clear clear combus combustor tor of any any resi residual dual fuel, motor gas turbine for one minute; allow gas turbine to coast down. b. Disconnect number one ignition ignition exciter input lead at exciter. Temporarily Temporarily secure input lead away from the exciter. c. Turn Turn on electr electrica icall power power to the igni ignitio tion n system (No. 2 ignition exciter energized). An audible report (approximately two sparks per second) should be heard when the No. 2 spark igniter fires. d. Turn Turn off off electri electrical cal power power to to the ignit ignition ion system. Reconnect input lead to exciter and safety-wire connector. e. Repeat Repeat step stepss b, c, and and d, disc disconne onnecti cting ng the No. 2 exciter. exciter. f. If an audi audible ble report report is not not hear heard d on No. 1 and/or No. 2 igniters, check out the system to isolate the problem, and take appropriate corrective action.

(2) Close Close natu natural ral-ga -gass manua manuall shut shutof offf valve to fuel control unit.

c. Hold Hold MOT MOTORI ORING NG pushbut pushbutton ton closed closed until gas generator speed stabilizes, and check for oil pressure. If there is no indication of oil pressure, release MOTORING pushbutton; pushbutton; while gas generator is coasting down, loosen oil fittings at lube pump to bleed air from system. Starter should motor gas generator to minimum of 2200 rpm. d. Repeat Repeat moto motorin ring g and and bleed bleeding ing proceprocedure until an indication of oil pressure appears. app ears. 8-2.10 8-2.10 False False Start Start.. Perfor Perform m false false start start as follows: a. With igniti ignition on leads leads discon disconnect nected ed and and manual gas valve closed, make automatic start of gas turbine per packager ’s manual. b. Gas generator should go through normal start cycle and then abort because of lack of flame.


I-19

GEK 97310 VOLUME I ADDENDUM I 8-2. 8-2.1 11 Gove Govern rnor or Check Check.. Check Check gover governor nor system per packager’s manual. 8-2.12 8-2.12 Wet Presta Prestart. rt. Perfor Perform m wet wet presta prestart rt as follows: a. With igni ignitio tion n lead lead discon disconnect nected, ed, but but with manual gas valve open and governing system operating, make automatic start of gas generator per packager’s manual. b. Gas generator should accelerate to light-off speed (1100 to 1300 rpm). Fuel valve should open and fuel manifold pressure should be approximately 3 psig (21 kPa). Adjust fuel supply if required. Start will then abort because of lack of flame. c. Allow Allow gas gas gener generato atorr to coast coast to to stop; stop; then motor it to purge any remaining natural gas from gas generator gen erator.. Remain on the starter for 60 seconds to purge fuel from the gas turbine. 8-2.13 8-2.13 Manual Manual Start Start and Operat Operation ion.. PerPerform manual start per packager’s manual with fuel valve open and with ignition lead connected. Refer to Table 5. 5. NOTE Power turbine, except in a new installation, will be rotating when gas generator idle speed is attained.

CAUTION DO NOT EXCEED 7000 RPM NGG AND 30 SECONDS OF GAS TURBINE OPERATION WITHOUT POWER TURBINE ROTATION. FOR EARLY MODEL GAS TURBINES THAT HAVE TIGHTER T IGHTER LPT BLADE TIP CLEARANCES, DO NOT EXCEED 6000 RPM NGG AND 30 SECONDS OF GAS TURBINE OPERATION WITHOUT POWER TURBINE ROTATION. a. The power power turb turbine ine must must rota rotate te by by the the time the gas generator speed reaches 7000 rpm NGG. If power turbine speed indication is not obtained and it is determined that a “thermal seizure” of the power turbine has occurred, proceed as follows: NOTE Thermal seizure of the power turbine rotor can occur when a hot gas turbine is shut down and is most likely to occur within 30 to 40 minutes following gas turbine operation. Thermal seizure is the condition where the power turbine rotor is prevented from rotating by hard ha rd contact between LPT blades and shrouds, interstage seals and other internal interference. This condition is the result of unequal cooling rates of the various power turbine components. The possibility of thermal seizures can be reduced by operating the gas turbine at idle power for at least five minutes prior to shutdown to achieve proper cooling of the power turbine. (1) (1) Shut Shutdo down wn gas gas turb turbin ine. e.

I-20


GEK 97310 VOLUME I ADDENDUM I (2) Immedi Immediate ately ly afte afterr the the gas gas turb turbine ine stops rotating, re-start and stabilize at idle speed (4950 ± 50 rpm) for 30 seconds. (3) Repeat Repeat steps steps (1) and (2) for two additional start-up and shutdown cycles. (4) (4) If the the pow power er tur turbi bine ne doe doess not not rotate after accomplishing substeps (1) through (3), shut down the gas turbine.

(5) Immedi Immediate ately ly after after gas turbin turbinee rotation stops, re-start and accelerate to 7000 rpm NGG maximum and stabilize for 30 seconds. If the power turbine still does no t rotate, shut down and investigate/correct the cause. During the investigation for the cause of a thermally seized rotor, inspect the LPT blades in stages 4, 5 and 6 for shingling and unlatching. If blades have become unlatched, they may be relatched. LPT blades that have encountered shingling may be bent thereby necessitating replacement of the power turbine. CAUTION FOR EARLY MODEL GAS TURBINES THAT HAVE TIGHTER T IGHTER LPT BLADE TIP CLEARANCES, DO NOT EXCEED 6000 RPM NGG AND 30 SECONDS OF GAS TURBINE OPERATION WITHOUT POWER TURBINE ROTATION.


I-21

GEK 97310 VOLUME I ADDENDUM I Table able 5. Step No. 1.

Procedure

STAR START T-UP AND AND OPER OPERA ATION TION

Normal Results

Assure that prestart checks are completed per Table 4

Corrective Action for Abnormal Results Automatic shutdown (trip) at 1450°F (788°C). Refer to Table 3

CAUTION IF T5.4 RAPIDLY APPROACHES OR EXCEEDS 1438°F (781°C), ABORT START. A start may be aborted at any time by closing the fuel valve, allowing gas g as generator to motor for 60 seconds, then closing the starter shutoff valve. 2.

Open starter shutoff valve

GG rotation

Close valve

NOTE If purge cycle is required, NGG in step 3 may be revised. 3.

At 1100 to 1300 rpm NGG a. Ignition on

4.

I-22

b. Fuel valve open

Fuel manifold pressure approximately 3 psig

c. Note Note time time to ligh lighto toff ff (T5.4 above 400°F 204°C) 1200 rpm

20 se seconds maximum

Note time to 4500 ± 200 rpm 90 se seconds ma maximum NGG

Abort start-automatic shutdown Troubleshoot sy system an and take corrective action if rpm stops accelerating or it takes longer than 90 sec to reach 4300 rpm


GEK 97310 VOLUME I ADDENDUM I Table 5.

STAR START T-UP AND OPERATION OPERATION - (Cont.) (Cont.)

Step No.

Procedure

5.

At 4300 to 4700 rpm NGG a. Star Starte terr shu shuto toff ff valv valve, e, close automatically

Normal Results

Corrective Action for Abnormal Results

Valve closed

Close fuel valve and allow gas generator to motor for 60 seconds; then shut off starter

Indication

Recheck at idle

a. Oil pressure

See applicable figures in Chapter 5

Shutdown if below 6 psig (41 kPa)

b. Maximum NGG with power turbine seizure (thermal seizure)

7000 rpm NGG maximum Shut down and investigate/ correct cause per for 30 seconds (for early model gas turbines that have paragraph 8-2.13 tighter LPT blade tip clearances, do not exceed 6000 rpm NGG and 30 seconds of gas turbine operation without power turbine rotation)

c. NGG

5000 rpm ± 250 rpm

Adjust

d. T5.4

1000° 1000°F F (538 (538°C °C)) maxi maximu mum m

Emerg Emergen ency cy shu shutd tdow own, n, Table 7

e. NPT (unloaded)

1600-1900 rpm

f. Gas generator vibration

0 to 3 mils DA

Alarm at 4 mils. Automatic normal shutdown. If above 7 mils. Troubleshoot and take corrective action

g. Power turbine vibration

0 to 6 mils DA

Alarm at 7 mils. Automatic normal shutdown if above 10 mils. Troubleshoot and take corrective action

b. Switch ignition off c. Check oil pressure 6.

Note time to 5000 rpm NGG

7.

At idle, check the following:


I-23

GEK 97310 VOLUME I ADDENDUM I Table 5. Step No.


Procedure

Normal Results

h. Compr Compres esso sorr inle inlett temtem perature (T2)

Approximately equal to outside air temperature

Troubleshoot sensing and indicating system. Correct as required

i.

No leaks allowed

Correct as required

1438°F 1438°F (781 (781°C) °C) maximu maximum m

Correc Correctt as requir required. ed. Refer Refer to figure 1

Chec Check k for for fuel fuel or oil oil leaks

8.

Set de desired po power setting. Observe T5.4 during transient operation

9.

After stabilizing at a new power setting, read and record the following: a. T5.4

1438°F (781°C)

*

b. NGG

9850 rpm maximum

*

c. NPT

3600 rpm maximum

*

d. Oil pressure

See applicable table and figures in Chapter 5

e. Scave Scaveng ngee oil oil temp temper erat atur uree 215°F 215°F to 275°F 275°F (102° to 135°C) f. Gas Gas gene generrator ator vibr vibrat atio ion n

I-24


3 mils ils maxi maximu mum m 4 mils (Alarm) 7 mils (Trip)

Emergency or automatic shutdown if 5 psig (34 kPa) out of limits Automatic shutdown if above 340°F (171°C) * Troubleshoot Emergency or automatic shutdown

g. Powe Powerr tur turbi bine ne vibr vibrat atio ion n

7 mil milss max maxim imum um (Ala (Alarm rm)) 10 mils maximum (Trip)

* Emergency or automatic shutdown

h. Fuel Fuel mani manifo fold ld inle inlett pressure

350 ± 5 psig (2413 ± 35 kPa)

**

i.

Fuel inlet te temperature

-65° to to 15 150°F (-54° to +66°C)

**

j.

Scavenge oil filter ΔP

Refer to packager’s r’s manual


GEK 97310 VOLUME I ADDENDUM I Table 5. Step No.

Procedure


Normal Results


k. Lube Lube oil oil suppl supply y fil filte terr ΔP Refe Referr to to pack package ager’ r’ss manu manual al l.

T2

m. Stator vane angle *

Approximately equal to outside air temperature See applicable figure in WP 118 00

** Correct as required per WP 118 00

Reduce power power to to stay within within limits. limits. If reducing reducing power does does not bring paramet parameters ers within within limits, shutdown.

** If all other parameters parameters are normal, normal, correct discrepancy discrepancy at next opportunity opportunity..


I-25

GEK 97310 VOLUME I ADDENDUM I Table able 6. Step No.

Procedure

GAS GAS TURB TURBIN INE E SHU SHUTD TDOW OWN N

Normal Results

1.

Set gas turbine at idle power Gas Gas gene genera rato torr dec decel eler erat ates es (unloaded)

2.

After stabilizing fo for 3 minutes, read and record the following:

Corrective Action for Abnormal Results Emer Emerge genc ncy y shut shutdo down wn

a. Oil pressure

See applicable figure in Chapter 5

Automatic normal shutdown if below 8 psig

b. NGG

4950-5050 rpm

Adjust

c. T5.4

1000° 1000°F F (538° (538°C) C) maxi maximu mum m

Troubl roubles esho hoot ot and and take take corrective action

d. NPT (u (unloaded)

1600-1900 rpm

e. Gas generator vibration

3 mils maximum

Alarm at 4 mils. Automatic normal shut down if above 7 mils. Troubleshoot and take corrective action

f.

6 mils maximum

Alarm at 7 mils. Automatic normal shut down if above 10 mils. Troubleshoot and take corrective action

Power turbine vibration

g. Fuel Fuel inlet nlet tempe emperratur aturee

-65° 65° to 150° 150°F F (-5 (-54° 4° to 66° 66°C) C)

h. Scaven Scavenge ge oil oil filt filter er

Refer to pac package ager’s r’s manual

ΔP

i. Lube Lube oil oil sup suppl ply y fil filte terr ΔP Refe Referr to to pack package ager’ r’ss manu manual al 3.

After stabilizing at idle for 5 minutes, close fuel valves

T5.4 drops below 400°F (204°C) NGG and NPT decelerate and stop

Shut off fuel supply

4.

Observe T5.4 for 3 minutes after shut down

700°F (371°C)

Motor gas turbine and shut off fuel supply. Continue motoring until temperature decreases

I-26


GEK 97310 VOLUME I ADDENDUM I Table able 7. 7. Step No.

EMER EMERGE GENC NCY Y SHUT SHUTDO DOWN WN

Procedure

Normal Results


CAUTION DELETED. 1.

Conditions permitting, T5.4 drops below 400°F decelerate gas turbine to idle (204°C) and NGG and NPT and close fuel valves decelerate

Manual shut off fuel supply

2.

Observe T5.4 for 3 minutes after shutdown

Motor gas turbine. Continue motoring until temperature decreases

3.

If an emergency shutdown from a high power setting (T5.4) greater than 1150°F (621°C) has occurred, and a “hot restart” is required, refer to Chapter 4, 4, paragraph 4-11.

700°F (371°C) max.

a. Deleted. b. Deleted. c. Deleted. 8-2. 8-2.14 14 Oper Operat atio ion n to Max Maxim imum um Pow Power er..

tions are not within limits, consult the local General Electric Company representative.

CAUTION MANUAL OPERATION MAY ELIMINATE CERTAIN PROTECTIVE CIRCUITS. OPERATING LIMITS SHALL NOT BE EXCEEDED. a. Slowly Slowly incr increas easee manual manual cont control rol settin setting g (refer to packager’s manual) to increase gas generator speed. After each 500 rpm increase, log all instrument readings, paying particular attention to variable stator vane position and vibration. If variable stator system is not within limits, adjust it per WP 118 00. 00. If vibra-

b. Operate gas turbine up to rated power, if possible, but do not exceed exhaust gas tem perature (T5.4) limit. Hold at this power setting until all temperatures stabilize. If governing system is unstable, adjust per packager’s packager ’s manual. c. Log all all inst instrum rument ent readi readings ngs once they they stabilize. Refer to Table 5, 5, step 9. d. Reduce Reduce gas gas gener generato atorr speed speed to idle idle.. After stabilizing for three minutes, record all instrument readings. Refer to Table 6, 6, step 2. Change 4


I-27

GEK 97310 VOLUME I ADDENDUM I e. Check Check fail-s fail-safe afe sect section ion of of contro controll syssystem per packager’s manual. f. After After gas gas turb turbine ine has been stabil stabilize ized d at idle for five minutes, make normal shut-down. Refer to Table 6, 6, steps 3 and 4. 8-2.15 8-2.15 Automat Automatic ic Operat Operation ion.. Check Check autoautomatic operation per packager’s manual.

8-3.3

WARNING WHEN ENTERING THE GAS TURBINE ENCLOSURE, THE FOLLOWING REQUIREMENTS SHALL BE MET: •

THE THE GAS GAS TURB TURBIN INE E SHA SHALL LL BE SHUT DOWN.

•

ENCL ENCLOS OSUR URE E ENTR ENTRY Y DURI DURING NG ENGINE OPERATION IS PROHIBITED IN GENERAL. IF ENTRY SHOULD BE REQUIRED DURING ENGINE OPERATION, CONTACT GE FIELD SERVICE FOR A REPRESENTATIVE WHO IS TRAINED TO ENTER THE ENCLOSURE UNDER SUCH CONDITIONS.

•

THE THE FIR FIRE E EXT EXTIINGU NGUISHI ISHING NG SYSTEM SHALL BE MADE INACTIVE ACCORDING TO THE CUSTOMER’S PROCEDURES.

•

SECO SECOND NDAR ARY Y AIR AIR TO THE THE ENCLOSURE SHALL BE SHUT OFF. HIGH SECONDARY AIRFLOW MAY PREVENT OPENING OR CLOSING THE ENCLOSURE DOOR.

•

THE EN ENCLOSURE DOOR SHALL BE KEPT OPEN. IF THE GAS TURBINE IS OPERATING, AN OBSERVER SHALL BE STATIONED AT THE ENCLOSURE DOOR AND CONFINED SPACE ENTRY PROCEDURES SHALL BE FOLLOWED.

a. Acce Accele lera rate te to idle idle.. b. Accelerate to rated power. c. Log all all ins instr trum umen entt read readin ings gs.. d. Dece Decele lera rate te to to idle idle.. e. Check Check for for fue fuell or lube lube oil oil leak leaks. s. f. After After a total total of of five five minute minutess at idle, idle, shut down gas turbine. g. Check Check lube lube oil oil and fuel fuel filte filters rs and and strainers; clean or replace as necessary. h. Corre Correct ct any any lea leaks ks obs obser erve ved. d. i.

Remove Remove all tempor temporary ary instru instrument mentati ation. on.

j. Check gas turbine and mounting system for loose parts; tighten as necessary. 8-3 8-3

NOR NORMAL MAL OPERA PERATI TION ON..

8-3. 8-3.1 1 Gener General al.. Norm Normal al oper operat atio ion n is the the rouroutine operation of an installed gas turbine. For directions in the use of manual or automatic a utomatic operation for normal operation, refer to packager’s manual. 8-3. 8-3.2 2 Inte Interl rloc ocks ks.. Refe Referr to packa packager ger’’s manmanual for description of interlocks which affect gas turbine operation. I-28

Operation.


GEK 97310 VOLUME I ADDENDUM I •

ALLO ALLOW W THE THE GAS GAS TU TURBIN RBINE E TO TO COOL DOWN. AVOID CONTACT WITH HOT PARTS, AND WEAR THERMALLY INSULATED GLOVES AS NECESSARY.

•

EAR EAR PRO PROTE TECT CTIO ION N SHA SHALL LL BE WORN IF GAS TURBINE IS OPERATING.

•

DO NO NOT RE REMAIN IN IN TH THE ENCLOSURE OR IN THE PLANE OF ROTATION OF THE STARTER STARTER WHEN WH EN STARTING OR MOTORING THE GAS TURBINE.

a. When When enter entering ing enclosu enclosure re wear wear proper proper ear protection. b. Start and operate the gas turbine per Table 5. 5. Do not exceed operating limits of Table 3. 3. c. Shut Shut down down the the gas gas tur turbi bine ne per per Table 6. 6. d. Emerge Emergency ncy shut shut down down the gas turbin turbinee per Table 7. 7.

8-4 8-4

8-4.1 4.1

EMER EMERGE GENC NCY Y OPER OPERA ATION TION..

Emerge ergen ncy Shu Shutdown.

a. In an emer emergenc gency y, the gas gas gener generato atorr may be shut down from any power setting by closing the fuel valve. However, this should only be done in an emergency, emergency, since since rapid shutdown will decrease life of gas g as generator. b. Emergency shutdown shall be made per Table 7. 7. 8-4.2 4.2

Pos Post Sh Shutdown Fi Fire.

a. During During a norma normall shut shutdown down,, exhau exhaust st gas temperature should decrease. If during time gas generator is coasting to stop, temperature increases instead of decreases, it indicates that combustion is still taking place because of a leaking fuel valve. (A slight temperature increase after rotation stops is normal.) Make certain fuel is shut off, and motor the gas generator. erator. This will blow out the fire. As soon as temperature decreases to normal, discontinue motoring.

e. Refer to Chapter 5, 5, paragraph 5-3.30 and 5-3.31, for lube correction factors and lube supply pressure characteristics. (See tables 5-22, 5-23, 5-26, and 5-27, and figures 5-36, 5-37, 5-40, 5-41, 5-44, 5-46, 5-48, and 5-50). f. Idle Idle lube lube oil oil press pressure ure is 29 psig psig maximaximum after five minutes stabilization. g. The corre correcte cted d operat operating ing pres pressur suree of the the lube oil shall be per applicable table in Chapter 5 at 5 at standard conditions of 9000 rpm gas generator speed and 150°F lube pump discharge temperature. Oil pressure measured at conditions other than standard shall be corrected to standard conditions using applicable table in Chapter 5. 5. Change 4

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