riverhawk IM-125 Instruction Manual Download

Page: 1 / 38

Repairs – Rentals

Field Service

215 Clinton Road

New Hartford, NY 13413

Tel: +1 315 768 4855

Fax: +1 315 768 4941

Email: [email protected]

Revision W

Page 1 of 38

INSTRUCTION MANUAL IM‐125

For Gas Turbine and Steam Turbine

Tensioned Studs and Nuts

Applicable Bolting Connections
Fr. 7FA Gas Turbine to 7FH2 Generator

Fr. 7FA Gas Turbine to Load Coupling

Fr. 7FB Gas Turbine to 7FH2 Generator

Fr. 7FB Gas Turbine to Load Coupling

Load Coupling or Steam Turbine to 7FH2 Gen

Applicable GE Ordering Sheet Part Numbers

358A7202P001

358A7202P002

358A7202P012

358A7202P018

358A7202P020

358A7202P031

358A7202P032

361A5218P001

377A9477P001

377A9477P002

377A9477P003

377A9477P004

377A9477P005

377A9477P006

382A6121P003

382A6121P004

382A6121P006

GE Power & Water

GENERAL ELECTRIC COMPANY

MLI:

____ OF ____

DATE

CUSTOMER'S INFORMATION BOX

CONTENTS ARE INDEPENDENT OF RIVERHAWK DOCUMENT CONTROL

ISSUED:

THIS DOCUMENT SHALL BE REVISED IN ITS ENTIRETY. ALL SHEETS OF THIS DOCUMENT ARE

THE SAME REVISION LEVEL AS INDICATED IN THIS VENDOR SUPPLIED DRAWING APPLIQUE.

REV

373A4000

GE DRAWING NUMBER

VENDOR SUPPLIED

THIS DOCUMENT IS FILED UNDER THE GE DRAWING NUMBER.

GE NOT TO REVISE. GE REVISION LEVEL IS SHOWN ON THIS APPLIQUE.

GE SIGNATURES

CHECKED:

The Riverhawk Company reserves the right to update this document without dissemination or notice.

The latest revision may be obtained by contacting Riverhawk Company or thru www.riverhawk.com.

Summary of Contents for IM-125

Page 1: ...P001 377A9477P001 377A9477P002 377A9477P003 377A9477P004 377A9477P005 377A9477P006 382A6121P003 382A6121P004 382A6121P006 GE Power Water GENERAL ELECTRIC COMPANY MLI ____ OF ____ DATE CUSTOMER S INFOR...

Page 2: ...Reference 4 3 0 Quick Checklist 6 4 0 General Preparations 9 5 0 Hardware Set Preparations 11 6 0 Stud and Nut Assembly 14 7 0 Hydraulic Tensioner Equipment Assembly 17 8 0 Assembly of Tensioner on S...

Page 3: ...all applicable safety rules and regulations WARNING The proper personal protective equipment must be worn at all times Riverhawk recommends at a minimum safety glasses long sleeve shirt hard hat heavy...

Page 4: ...coat of clean turbine oil or a spray lubricant to the puller screw This procedure will ease assembly and assure positive mating of the threads before tightening Do not use Never Seize on the conical t...

Page 5: ...Gas Turbine to Load Coupling 2 1 4 size Qty 18 as well as the Load Coupling to Generator 2 3 4 size Qty 16 2 2 Frame 7FA Gas Turbine to Load Coupling GE PART NUMBER RIVERHAWK P N GE VENDOC P N GE 358...

Page 6: ...E 382A6121P003 GE 382A6132P004 GE 377A9477P003 GE 377A9477P005 HF 0803 HF 0803 HF 0803 HF 0803 HF 0803 GE 359B2520 GE 359B2520 GE 359B2520 GE 359B2520 GE 359B2520 The hydraulic tool used for installat...

Page 7: ...any damage Clean the studs and nuts Measure stud lengths VERY IMPORTANT Install studs and nuts into the flange Set stick out dimension on the coupling side of the flange Hand tighten nuts on turbine g...

Page 8: ...ench in spanner ring to tighten nut Release pressure move to next stud in pattern Repeat above steps at final pressure Measure final stud length and record on stretch datasheets Calculate stretch Torq...

Page 9: ...oses should be inspected prior to use Inspection guidelines are listed in the following sub sections This equipment produces very high hydraulic pressures and very high forces Operators must exercise...

Page 10: ...ioner shall be maintained in a clean environment and all caps and plugs for hydraulic openings and fittings must be in place Use ISO 32 grade oil When in use the tensioner shall be protected from sand...

Page 11: ...nsioners is recommended Functional upgrades are also recommended The Riverhawk Service Returns Coordinator should be notified 3 6 months prior to a planned outage to schedule an inspection service 5 0...

Page 12: ...eck the stud for any visible damage If there is any visible damage do not use the stud and contact the Riverhawk Company for a replacement stud Please be prepared to supply the turbine number weight c...

Page 13: ...d air to remove loosened debris 6 Visually inspect threads for cleanliness Threads should be bright and shiny 7 Repeat if any dirt can be seen in the threads 8 Inspect threads for any damage that may...

Page 14: ...ach measurement on the supplied record sheets Do not allow the measuring instruments to sit in the sun The same person should make all measurements 6 0 Stud and Nut Assembly Refer to Hardware Set Part...

Page 15: ...ing Flange Bolted Joint Adjust the stud nut assembly so that the stud sticks out from the face of the nut the amount shown on the hardware set drawing If you don t have a hardware set drawing it can b...

Page 16: ...768 4855 Fax 1 315 768 4941 Email info riverhawk com REV 373A4000 GE DRAWING NUMBER Revision W Page 16 of 38 Digital Calipers Sample Pictures of a Stick Out Measurement Hand tighten the assembly to a...

Page 17: ...es WARNING To avoid failure ensure safety and proper operation the tensioner assembly must be installed on a stud in the flange before bleeding and pressurizing the tensioner Do not use the tensioner...

Page 18: ...h another spare disc for field replacement Extra burst discs are available from Riverhawk for replacement purposes To replace a damaged burst disc 1 Remove the hydraulic port s dispersion nut compress...

Page 19: ...d thread on to the tube or hose end as shown in Illustration 1 Illustration 2 The collar should be placed 125 3 2 mm from the tip of the cone See Illustration 2 It may be necessary to adjust this coll...

Page 20: ...ensioner around the shaft while tensioning If possible use a Come along or chain fall from the ceiling of the coupling room and attach it to the tensioner using a short strap wrapped through the handl...

Page 21: ...rial Number S N 721 the HT 0342 was supplied with two adapter feet The feet were marked TURBINE and GENERATOR Mount the appropriate foot before attempting use of the tensioner Assembly sequence is as...

Page 22: ...ate when the puller screw is tight then either 1 the stud is not properly positioned in the flange and recheck the stick out length and reposition the nuts or 2 The tensioner is damaged and must be re...

Page 23: ...e Follow the tensioning sequence for each flange joint as defined on the record sheets found at the end of this manual 9 1 Tensioning at 50 pressure After the tensioner is properly installed apply hyd...

Page 24: ...ve the valve open 2 Unscrew the puller screw using a wrench and breaker bar Do not use an impact wrench as this can damage the tensioner 3 Move the tool to the next bolt hole following the tensioning...

Page 25: ...14 0 31 mm 0 36 mm Excessive stretch variations or low stretch values can be corrected by uninstalling all or selected studs to the pressure values stated in the above table Have final stretch values...

Page 26: ...n seated and torqued to the values specified the load created by the set screw displaces the thread of the nut in the area of the web creating the desired locking action Stud Size Set Screw Size Torqu...

Page 27: ...assemblies which have been locked with the liquid locking compound removal is accomplished as follows 1 Using a wire brush GT 4253 and shop air clean the internal tapered thread of the stud to remove...

Page 28: ...ng table and loosen the nut Then release the pressure and remove the tensioner Flange Position Stud Size Removal Pressure Turbine to Coupling 2 1 4 58 mm 17000 psi 1170 bar Coupling to Generator 2 3 4...

Page 29: ...h an Allen wrench loosen the two locking set screws but do not remove from the nut Sample Picture of the loosening of a nut s set screws 3 Install the appropriate tensioner to the stud as described in...

Page 30: ...hese directions to properly store your hydraulic tensioner and hydraulic pump kit for long term storage and shipment If any damage is observed contact the Riverhawk Company to schedule a maintenance i...

Page 31: ...kit Yes Riverhawk has rental tensioner kits available for most of our hydraulic tensioners Q A A tensioner has pulled itself out of the stud s conical threads Can I continue using a tensioner on this...

Page 32: ...final pressure The final stretch length is larger than the final stretch target What is the next step Remove the stud from the bolt hole Check if the hydraulic pump is set to the right pressure Re me...

Page 33: ...tinues it may be necessary to open the pump kit Contact Riverhawk for guidance Q A The hydraulic hose has a collar on it that can t be moved by hand The hydraulic fitting is shown in section 7 2 The c...

Page 34: ...to section 2 0 P Jun 9 2009 Added turbine oil and removed Never Seize from sections 1 0 3 0 8 2 and 9 3 N Oct 27 2008 Added table of contents added metric dimensions added GE p n cross reference to s...

Page 35: ...oad New Hartford NY 13413 USA The hydraulic pump and bolt tensioning tool described in this manual are used for installing and applying tension to large bolts that are specifically designed by Riverha...

Page 36: ...alling and applying tension to large bolts that are specifically designed by Riverhawk Company to be tensioned hydraulically All applicable sections of Supply of Machinery Safety 2008 have been applie...

Page 37: ...artford NY 13413 Tel 1 315 768 4855 Fax 1 315 768 4941 Email info riverhawk com REV 373A4000 GE DRAWING NUMBER Revision W Page 37 of 38 Appendix B1 STRETCH RECORD SHEET FOR THE TURBINE END TURBINE NUM...

Page 38: ...Hartford NY 13413 Tel 1 315 768 4855 Fax 1 315 768 4941 Email info riverhawk com REV 373A4000 GE DRAWING NUMBER Revision W Page 38 of 38 Appendix B2 STRETCH RECORD SHEET FOR THE GENERATOR END TURBINE...

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