18. Pres_Soren Forne

7/29/2019 18. Pres_Soren Forne

1/25

October 30, 2007 SKF Group Slide 0


2/25

Tide Sj AS with

SKF knowledgeonboard

Optimising Ship Maintenance

Sren Forn, BDM Marine

26/01/2011


3/25


Agenda

1. SKF Norge

2. Who is Tide Sj

3. What Happened4. Success stories

5. Conclusion


4/25


Who is SKF Norge -Stavanger


5/25


SKF Norge Stavanger

12 staff

Consultants in Condition Monitoring(CM) and Condition Based Maintenance

(CBM)

Criticality studies, vibration analysis, oilanalysis, process monitoring,

performance testing, phase analysis,

ultrasound, thermography, alignment,

balancing, etc Operate one of SKFs remote data

centers

Offer customer tailored reliabilitysolutions

Work mainly within industry, shipping, oiland gas

FPSO, navy, ferries, tankers, LNG,yachts, bulk, PSV, AHTS


6/25October 30, 2007 SKF Group Slide 5

Who is Tide Sj AS


7/25October 30, 2007 SKF Group Slide 6

Tide Sj

Formally known as Stavangerske from 1855

Changed name to Tide Sj AS and is part ofTide ASA

Own approx 60 car ferries and 20 high speedpassenger ferries

Manage and operate along the entireNorwegian coast line

Turnover of approx NOK 1,7 bill in 2009

1 400 employees Operations based in Stavanger and Bergen


8/25


Type of vessels


9/25


Typical issues prior to CBM program

Bearing failures and lubrication issues

Unplanned stop

Reliability issues on the vessels


10/25


What happened? Why Tidestarted to use CBM


11/25


Catastrophic bearing failure

Generator bearing failed on a car ferry in 2008

Could this failure have been picked up? Most probably!

Solution was to implement a vibration analysisprogram on generators and thruster electric motors

Implemented offline monitoring system withpermanently mounted measurement studs

1 SKF engineer boards the vessels covered

by the contract monthly/quarterly Trending, analysis and reporting done by SKF


12/25


Progression of monitoring system

Program rapidly expanded toinclude :

Entire diesel/gas generator

train

Thruster el. Motor, shaft

support bearings and gear

Scope increased by 5 vessels

Today SKF monitors 9 ferriescountry wide

1 new ferry is planned to beadded to the scope in 2011

Plans to include all vessels withthruster systems to be classed

on condition


13/25


Scope of work today

SKF engineer boards monthly/quarterly

Discuss activities/issues taken place onboard, takes readings, ensures quality of

measurement points and data, trend data,

analysis and reporting to Tide

Maintenance of software, hardware anddatabase

Regular meetings to review issues andprogress


14/25


Report format


15/25


Report format


16/25


Scope of work in future

Ultimate goal is to class allthrusters on condition throughout

the fleet

Review lubricants used, lubricationmethods and routines


17/25


Success stories


18/25


Some problems picked up

Loosening holding bolts

Incorrect lubrication types

Incorrect lubrication methods Incorrect lubrication intervals

Dry bearings

Bearing defect on DE on el motor, warranty issue Bearing defect on shaft support bearing

Overfilled oil reservoir in top thruster gear box


19/25


Thruster DE gear box broken tooth

Broken tooth identifiedduring leak repair of

gear box

SKF took readings fortest purposes

Readings taken beforeand after gear repair


20/25


Generator 1

Sudden increase in velocityreadings

Analysis showed dominant

3x component Recommendation to tighten

hold down bolts

Generator before and after tightening


21/25


Before and after lubrication Envelope readings

Bearing analysis indicating dry bearing

New bearing reading indicating correctlylubricated bearing


22/25


Detecting bearing defects Generator

Analysis shows clear outerring defect

Recommendation tolubricate bearing and

monitor closely for

deterioration


23/25


Bearing housing env

Increasing trend

Analysis indicates high noise carpet level and loose bearing

Lubrication done by hand

Recommendation = change bearing and housing and fitlubrication nipple and dump valve


24/25


Estimated value added

According to technical director at Tide Sj, since theintroduction of SKF system:

Fewer breakdowns

Saved the cost of one expensive electrical motor

Avoided long term offhire and hire of replacement vessel

Total estimated savings:

20 000 annually pr ship with 2 thrusters

An additional 100 000 saved from fewer enginebreakdowns and repair costs


25/25


So remember...

A correctly setup CBM system, with correct hardware,software and know how, offers the potential of large

savings

Increase vessel reliability and onhire

SKF can supply turn key solutions with hardware,software and services to create a concept to suite your

needs

SKF is a world wide company with local presence

SKF is a world leader in increasing reliability ofmachinery by offering its knowledge to customers

18. Pres_Soren Forne

Documents

Transcript of 18. Pres_Soren Forne