paper case study

Work Request Follow Up Report

PM1 – Paper Machine

Suction Roll Vacuum Pump NDE Bearing defect

Aug 2008

Suction Roll Vacuum Pump (Bearing Defect) AE1 - Suction Roll Vacuum Pump

3108-MP-22-POH Pump Outboard brg HorizTrend Display of Early brg wear

-- Baseline -- Value: .325 Date: 16-Nov -06

0 100 200 300 400 500 600 700

0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

Days: 16-Nov-06 To 20-Aug-08

PK A

ccel

erat

ion

in G

-s

BEARING REPLACED

BEARING DAMAGE Date:

Time: Ampl:

20-Aug-08 10:02:59 .231

The trend above shows before and after the pump NDE brg was replaced.

RM

S V

eloc

ity in

mm

/Sec

Frequency in Orders

AE1 - Suction Roll Vacuum Pump3108-MP-22-POV Pump Outboard brg Vert

0 10 20 30 40 50 60 70 80

0 0.10.20.30.40.50.6

Max Amp .60

20-Aug-08

08-Jul-08

28-May-08

Multiple spectrum shows before and after the pump brg was replaced.

02-Apr-08

19-Feb-08

21-Dec-07

19-Nov -07

25-Oct-07

27-Sep-07

21-Aug-07

18-Jul-07

12-Jun-0716-May-07

BEARING DEFECT

NOW OK

Suction Roll Vacuum Pump – Damaged Non Drive End Bearing. Images above taken from the non drive end pump bearing clearly show the bearing had started to spall, also present is some skidding / galling damage, caused by inadequate lubrication.


Yankee Dryer Drive (Left) Motor –Bearing Damage

Motor Replaced

March 2007

Yankee Dryer Motor (Left) ( Motor bearing damage)

PM2 - Yank ee Dryer Drive & (Left)??? -MIP Motor Inboard Brg (Peakvue)

Trend Display of WA VEFORM P-P

-- Baseline -- Value: 25.75 Date: 29-Dec-06

0 10 20 30 40 50

0

4

8

12

16

20

24

28

32

36

40

Days: 29-Dec-06 To 14-Feb-07

Pk-P

k W

avef

orm

in G

-s

ALERT

FA ULT

Date: T ime: Ampl:

14-Feb-07 11:22:52 2.761

BEA RING DEFECT - BEFORE MOTOR REPLACEMENT

NEW MOTOR FITTED

The trend above shows before and after the motor was changed due to a severe bearing damage on the motor, caused by electrical erosion.

PK A

ccel

erat

ion

in G

-s

Frequency in CPM

PM2 - Yank ee Dryer Drive & (Left)??? -MIV Motor Inboard Brg Vert

0 20000 40000 60000 80000 100000

Max A mp 1.78

Plot Scale

0

2

11:22:4714-Feb-07

10:00:3719-Jan-07

16:11:5929-Dec-06

MOTOR BEA RING DEFECTS

NEW MOTOR FITTED

Multiple spectrum shows before and after the motor was changed.

Damaged Yankee Motor bearing NDE

Above photos are taken from the damaged NDE yankee motor bearing SKF 6316, severe electrical erosion is the cause of the damage to the inner and outer races, what is worrying that this bearing was an insulated bearing which should stop stray eddy currents passing through the bearing, however in this case it has not worked.


Saturation Reactor Pump Damage Bearing

Bearings Replaced

Dec 2007

Saturation Reactor Pump ( Damaged Pump Bearings) AE2 - Saturation Reactor Pump

SRP -PIP Pump inboard brg (Peakvue)Trend Display of WAVEFORM P-P

-- Baseline -- Value: 11.90 Date: 18-Jan-07

0 50 100 150 200 250 300 350

0

10

20

30

40

50

60

70

80

90

Days: 18-Jan-07 To 20-Dec-07

Pk-

Pk

Wav

efor

m in

G-s

ALERT

FAULT

Date: Time: Ampl:

20-Dec-07 08:56:25 77.43

The trend above shows the sharp increase in levels due to a damaged pump bearing.

PK

Acce

lera

tion

in G

-s

Frequency in kCPM

AE2 - Saturation Reactor PumpSRP -PIH Pump Inboard brg horiz

0 40 80 120 160 200 240

0

1

2

3

45

Max Amp 4.15

18-Jan-07

14-Feb-07

19-Mar-07

Multiple spectrum shows increase in levels due to damaged pump bearing.

18-Apr-07

17-May-07

13-Jun-07

20-Jul-07

22-Aug-07

26-Sep-07

26-Oct-07

20-Nov -07

Damaged Pump Bearing

20-Dec-07

Analysis of Bearing Damage Pump Drive End Bearing. Summary Major spalling has occurred on the inner and outer races of the pump drive end bearing, this bearing takes all the axial load of the pump as the other bearing is of roller design. High axial thrusting maybe the cause of this bearing defect. It should be noted that this pump suffers from high levels of cavitation, this maybe a factor in causing the pump to thrust more than normal. It will be interesting to see how long the next set of bearings last.



Yankee Main Drive Motor Severe Bearing Distress

May 2008

Yankee Main Drive Motor (Bearing Defect) PM1 - Yankee Dryer Driv e & Drum

3326-MD04A-MIP Motor Inboard Brg (Peakvue)Trend Display of WAVEFORM P-P

0 100 200 300 400 500 600

0

4

8

12

16

20

24

28

32

36

40

44

Days: 17-Nov-06 To 28-May-08

Pk-

Pk

Wav

efor

m in

G-s

ALERT

FAULT

Date: Time: Ampl:

28-May-08 10:11:29 5.443

The trend above shows before and after the motor was replaced

PK

Acce

lera

tion

in G

-s

Frequency in Orders

PM1 - Yankee Dryer Drive & Drum3326-MD04A-MIP Motor Inboard Brg (Peakvue)

0 5 10 15 20 25 30

0 0.40.81.21.62.0Max Amp

1.14

28-May-08

02-Apr-08

19-Feb-08

Multiple spectrum shows before and after the motor was replaced.

21-Dec-07

19-Nov -07

25-Oct-07

27-Sep-07

21-Aug-07

18-Jul-07

12-Jun-07

17-Apr-07

16-May-07

13-Mar-07

SEVERE BEARING DISTRESS

MOTOR NOW OK

Yankee Drive Motor – Damaged Drive End Bearing. Images above taken from the drive end motor bearing clearly show the bearing was under severe distress the balls and races had just started to pick up, the root cause of this problem was a lack of quality grease.


LBKP HD Cleaner Pump Worn Coupling

Coulping Replaced

Dec 2007

LBKP HD Cleaner Pump ( Worn Coupling) AE2 - LBKP HD Cleaner Pump

LBHDCP -PIH Pump Inboard brg horizTrend Display of Overall Value


0 50 100 150 200 250 300 350

0

5

10

15

20

Days: 18-Jan-07 To 20-Dec-07

RM

S V

eloc

ity in

mm

/Sec

The trend above shows before and after the worn coupling was replaced. Multiple spectrum shows reduction in levels after the coupling was replaced.

ALERT

FAULT

Date: Time: Ampl:

20-Dec-07 09:28:39 5.605

Coupling Replaced

PK A

ccel

erat

ion

in G

-s

Frequency in kCPM

AE2 - LBKP HD Cleaner PumpLBHDCP -PIH Pump Inboard brg horiz

0 30 60 90 120

0 0.30.60.91.21.5Max Amp

1.73

20-Dec-07

20-Nov -07

26-Oct-07

14-Feb-07

19-Mar-07

18-Apr-07

17-May-07

13-Jun-07

26-Sep-07

20-Jul-07

22-Aug-07

18-Jan-07



1st Felt Guide Roll Bearing Damage

Aug 2008

1st Felt Roll (Bearing Damage) PM1 - 1st Felt Guide Roll

R1007 -D1P Bearing Drive Side (Peakvue)Trend Display of WAVEFORM P-P

0 100 200 300 400 500 600 700

0

3

6

9

12

15

18

21

24


Pk-

Pk

Wav

efor

m in

G-s

ALERT

FAULT

Date: Time: Ampl:

20-Aug-08 10:50:30 1.313

The trend above shows before and after the roll bearings were replaced

PK

Acce

lera

tion

in G

-s

Frequency in Orders

PM1 - 1st Felt Guide RollR1007 -D1V Bearing Drive Side Radial

0 10 20 30 40 50

0 0.10.20.30.40.5

Max Amp .27

20-Aug-08

09-Jul-08

08-Jul-08

Multiple spectrum shows before and after the roll bearings were replaced.

28-May-08

02-Apr-08

19-Feb-08

21-Dec-07

19-Nov-07

25-Oct-07

27-Sep-07

21-Aug-07

18-Jul-0712-Jun-07

NEW ROLL BEARINGS

1st Felt Roll – Damaged Drive End Bearing. Images above taken from the drive end roll bearing clearly show the bearing was under distress and just started to spall, inner race was polished and corroded suggesting inadequate lubrication and water ingress.



3102-MP-46 Btm Ply Machine Chest Dis Pmp

Motor bearing defect

Aug 2007

Btm Ply Machine Chest Dis Pump (Bearing defect) AE1 - Btm Ply Machine Chst Dis PmP

3102-MP-46-MIV Motor Inboard Brg VertTrend Display of Early brg wear


0 40 80 120 160 200 240 280

0

1

2

3

4

5

6

7


PK

Acce

lera

tion

in G

-s

ALERT

FAULT

Date: Time: Ampl:

21-Aug-07 09:01:03 .119

MOTOR REPLACED

MOTOR BEARING DAMAGE The trend above shows before and after the motor was replaced.

PK A

ccel

erat

ion

in G

-s

Frequency in CPM

AE1 - Btm Ply Machine Chst Dis PmP3102-MP-46-MIP Motor Inboard Brg (Peakvue)

0 20000 40000 60000

0 0.10.20.30.40.50.6

Max Amp .68

16-Nov -06

29-Dec-06

12-Feb-07

Multiple spectrum shows before and after the motor was replaced.

13-Mar-07

17-Apr-07

16-May-07

12-Jun-07

18-Jul-07

BEARING DEFECT

NEW MOTOR FITTED

21-Aug-07



3106-MP-15 MP-CW Showers Pump Pump Bearing defect - Cage

Sept 2007

MP - CW Showers Pump (Bearing Defect) AE1 - MP CW Showers Pump

3106-MP-15-POP Pump Outboard brg (Peakvue)Trend Display of WAVEFORM P-P

-- Baseline -- Value: 4.250 Date: 16-Nov -06

0 40 80 120 160 200 240 280 320

0

5

10

15

20

25

30

35

Days: 16-Nov-06 To 27-Sep-07

Pk-

Pk

Wav

efor

m in

G-s

ALERT

FAULT

Date: Time: Ampl:

27-Sep-07 09:06:28 1.963

BEARING REPLACED

The trend above shows before and after the pump was replaced

PK

Acce

lera

tion

in G

-s

Frequency in CPM

AE1 - MP CW Showers Pump3106-MP-15-POP Pump Outboard brg (Peakvue)

0 8000 16000 24000 32000

0

0.3

0.6

0.9

1.2Max Amp .59

09:06:2927-Sep-07

08:45:5921-Aug-07

09:10:0318-Jul-07

Multiple spectrum shows before and after the pump was replaced.

09:05:1112-Jun-07

09:06:0016-May-07

09:13:1317-Apr-07

09:01:4413-Mar-07

NEW PUMP FITTED



3106-MP-18 CW Transfer Pump Worn Coupling

Aug 2007

CW Transfer Pump (Worn Coupling) AE1 - CW Transfer Pump

3106-MP-18-MIV Motor Inboard Brg VertTrend Display of 3-8xRPM


0 40 80 120 160 200 240 280

0

0.4

0.8

1.2

1.6

2.0

2.4

2.8

3.2

3.6


RMS

Velo

city

in m

m/S

ec

ALERT

FAULT

Date: Time: Ampl:

21-Aug-07 08:49:44 .361

WORN COUPLING

NEW COUPLING FITTED

The trend above shows before and after the worn coupling was replaced.

RM

S V

eloc

ity in

mm

/Sec

Frequency in CPM

AE1 - CW Transfer Pump3106-MP-18-MIV Motor Inboard Brg Vert

0 20000 40000 60000 80000

0 0.40.81.21.62.0

Max Amp 2.34

16-Nov-06

29-Dec-06

12-Feb-07

Multiple spectrum shows before and after the coupling was replaced.

13-Mar-07

17-Apr-07

16-May-07

12-Jun-07

18-Jul-07

21-Aug-07WORN COUPLING

RPM= 1480. 08:49:43 21-Aug-07

Freq: Ordr: Sp 9:

54225. 36.64 .00385


Dust Removal Fan Fan Unbalance

Fan Impellor Cleaned

Sept 2007

Dust Removal Fan ( Fan Unbalance) 2BR - Dust Remov al Fan

DRF -FOH Fan Outboard brg HorizTrend Display of Overall Value


0 60 120 180 240 300

4

8

12

16

20

24

28

Days: 18-Jan-07 To 26-Sep-07

RMS

Vel

ocity

in m

m/S

ec

ALERT

FAULT

Date: Time: Ampl:

26-Sep-07 12:20:05 6.396

FAN CLEANED

The trend above shows before and after the fan impellor was cleaned due to dust build up on the blades.

RM

S V

eloc

ity in

mm

/Sec

Frequency in Orders

2BR - Dust Removal FanDRF -FOH Fan Outboard brg Horiz

0 5 10 15 20

0

4

8

12

16

2024

Max Amp 23.3

18-Jan-07

14-Feb-07

19-Mar-07

Multiple spectrum shows reduction in levels after the fan was cleaned.

18-Apr-07

26-Sep-0722-Aug-07

20-Jul-07

13-Jun-07

17-May-07

RPM= 1569. 12:20:05 26-Sep-07

Ordr: Freq: Sp 9:

1.000 1568.6 5.834


Trim Refiner 3102-MG10A

Motor – Drive end bearing defect

February 2007

Trim Refiner 3102-MG10A ( Motor bearing defect) A E1 - Trim Refiner

3102-MG10A -MIP Motor Inboard Brg (Peakvue)Trend Display of WA VEFORM P-P

-- Baseline -- Value: 1.938 Date: 16-Nov-06

0 10 20 30 40 50 60 70 80 90

0

10

20

30

40

50

60

70

80

Days: 16-Nov-06 To 12-Feb-07

Pk-P

k W

avef

orm

in G

-s

ALERT

FA ULT

Date: T ime: Ampl:

12-Feb-07 10:12:08 2.485

NEW MOTOR FITTED

MOTOR BEA RING DA MA GE

The trend above shows before and after the motor was changed due to an inner race bearing defect on the drive end.

PK A

ccel

erat

ion

in G

-s

Frequency in Orders

A E1 - Trim Refiner3102-MG10A -MIV Motor Inboard Brg Vert

0 10 20 30 40 50 60 70 80 90

Max A mp .12

Plot Scale

0

0.3

10:12:0112-Feb-07

15:03:4119-Jan-07

10:16:3829-Dec-06

14:09:1616-Nov-06

MOTOR DE BEA RING DEFECT

NEW MOTOR FITTED



FW Shower Pump 6200-MP-10

Misalignment – Motor/Pump Re-aligned

December 2006

FW Shower Pump 6200-MP-10 ( Re-Aligned) AE - FW Shower Pump

6200-MP-10-PIH Pump Inboard brg horizTrend Display of 3-8xRPM

-- Baseline -- Value: 4.638 Date: 16-Nov-06

0 10 20 30 40 50

0

4

8

12

16

20

24

Days: 16-Nov-06 To 29-Dec-06

RM

S Ve

loci

ty in

mm

/Sec

The trend above shows before and after the motor /pump was re-aligned. Multiple spectrum shows before and after the motor/pump was re-aligned.

ALERT FA ULT

Date: T ime: Ampl:

29-Dec-06 09:47:40 .781

BEFORE RE-A LIGNMENT

AFTER RE-A LIGNMENT

RM

S Ve

loci

ty in

mm

/Sec

Frequency in Orders

AE - FW Shower Pump6200-MP-10-PIH Pump Inboard brg horiz

0 10 20 30 40 50

Max A mp 18.4

Plot Scale

0

20

09:47:4129-Dec-06

13:26:1116-Nov-06

BEFORE

AFTER


PM1 – 3309-MP-32 Steam /Condensate Pump

Worn Coupling

June 2007

Steam / Condensate Pump – Worn Coupling AE1 - Steam & Condensate Dis Pump

3309-MP-32-MIV Motor Inboard Brg VertTrend Display of 26-70xRPM

-- Baseline -- Value: .223 Date: 29-Dec-06

0 30 60 90 120 150 180

0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

Days: 29-Dec-06 To 12-Jun-07

RM

S V

eloc

ity in

mm

/Sec

ALERT

FAULT

Date: Time: Ampl:

12-Jun-07 09:57:28 .113

WORN COUPLING

COUPLING REPLACED

The trend above shows before and after the coupling was replaced.

RM

S V

eloc

ity in

mm

/Sec

Frequency in kCPM

AE1 - Steam & Condensate Dis Pump3309-MP-32-MIV Motor Inboard Brg Vert

0 40 80 120 160 200 240

0 0.40.81.21.62.0

Max Amp 2.17

09:52:4129-Dec-06

11:55:1412-Feb-07

09:53:2513-Mar-07

Multiple spectrum shows before and after the coupling was replaced.

10:04:2117-Apr-07

10:19:4316-May-07

11:54:4217-May-07

09:57:2812-Jun-07

WORN COUPLING

NEW COUPLING FITTED

RPM= 2943. 10:19:43 16-May-07

Freq: Ordr: Sp 5:

41.93 14.25 .00557


UTM Agitator Motor Motor bearing defect

Motor Replaced

Sept 2007

UTM Agitator Motor ( Bearing damage) AE2 - UTM left side Agitator

UTM LSA -MIH Motor Inboard Brg HorizTrend Display of WAVEFORM P-P


0 50 100 150 200 250

0

10

20

30

40

50

60

Days: 19-Jan-07 To 26-Sep-07

Pk-

Pk W

avef

orm

in G

-s

ALERT

FAULT

Date: Time: Ampl:

26-Sep-07 12:37:33 2.117

The trend above shows before and after the motor was replaced due to a bearing defect.

PK A

ccel

erat

ion

in G

-s

Frequency in kCPM

AE2 - UTM left side AgitatorUTM LSA -MIH Motor Inboard Brg Horiz

0 30 60 90 120

0

0.3

0.6

0.9

1.2

1.51.8

Max Amp 1.71

26-Sep-07

20-Jul-07

13-Jun-07

19-Jan-0714-Feb-07

19-Mar-07

19-Mar-07

18-Apr-07

18-Apr-07

Multiple spectrum shows reduction in levels after the motor was replaced.


PM1 - UTM Agitator

Agitator Drive End Bearing Damage

March 2007

UTM Agitator – Agitator Bearing Damage A E1 - UTM A gitator

UTM A gi -A IP A gitator inboard brg (Peakvue)Trend Display of WA VEFORM P-P


0 10 20 30 40 50 60

0

5

10

15

20

25

30

35

Days: 19-Jan-07 To 13-Mar-07

Pk-P

k W

avef

orm

in G

-s

ALERT

FA ULT

Date: T ime: Ampl:

13-Mar-07 10:00:33 .368

SEVERE BEARING DAMAGE

BEA RING COLLA PSED NEW BEARING FITTED

The trend above shows before and after the agitator drive end bearing was replaced.

PK A

ccel

erat

ion

in G

-s

Frequency in Orders

A E1 - UTM A gitatorUTM A gi -A IP A gitator inboard brg (Peakvue)

0 10 20 30 40 50 60

Max A mp .75

Plot Scale

0

0.8

13:47:2119-Jan-07

11:11:2212-Feb-07

10:00:3413-Mar-07

BEA RING DAMA GE

Multiple spectrum shows before and after the agitator bearing was replaced.


Wet End Hood Circ Fan Fan drive end bearing defect

Bearing Replaced

May 2007

Wet End Hood Circ Fan ( Fan bearing defect) 2BR - Wet End Hood Circ Fan Drive

WEHCFD -FIV Fan Inboard brg VertTrend Display of 9-25xRPM

-- Baseline -- Value: .700 Date: 18-Jan-07

0 30 60 90 120

0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

Days: 18-Jan-07 To 17-May-07

RM

S Ve

loci

ty in

mm

/Sec

ALERT

Date: T ime: Ampl:

17-May-07 10:29:32 .08711

BEFORE BEARING REPLA CEMENT

AFTER BEARING REPLA CEMENT

The trend above shows before and after the fan bearing was changed due to a bearing defect.

PK A

ccel

erat

ion

in G

-s

Frequency in CPM

2BR - Wet End Hood Circ Fan DriveWEHCFD -FIV Fan Inboard brg Vert

0 20000 40000 60000 80000 100000

0

0.1

0.2

0.3

0.40.5

Max A mp .20

14:49:4918-Jan-07

10:05:1914-Feb-07

10:08:3313-Mar-07

Multiple spectrum shows before and after the fan bearing was replaced.

10:53:3219-Mar-07

10:17:2118-Apr-07

NEW FAN BEARING FITTED

10:29:3317-May-07


Wet End Combustion Fan Motor Motor – Drive end bearing Damage

Motor Replaced

February 2007

Wet End Combustion Fan Motor ( Motor bearing defect) 2BR - Wet End Combustion Fan

WECF -MIV Motor Inboard Brg VertTrend Display of WA VEFORM P-P


0 3 6 9 12 15 18 21 24 27

0

10

20

30

40

50

Days: 18-Jan-07 To 14-Feb-07

Pk-P

k W

avef

orm

in G

-s

ALERT

FA ULT

Date: T ime: Ampl:

14-Feb-07 10:01:30 3.465

DEFECT BEFORE MOTOR REPLACEMENT

NEW MOTOR FITTED

The trend above shows before and after the motor was changed due to a severe bearing defect on the drive end of the motor.

Frequency in kCPM

2BR - Wet End Combustion FanWECF -MIV Motor Inboard Brg Vert


PK A

ccel

erat

ion

in G

-s

0 40 80 120 160 200

Max A mp 4.99

Plot Scale

240

0

3

10:01:3114-Feb-07

14:43:4618-Jan-07

MOTOR BEA RING DEFECT - BEFORE REPLA CEMENT

NEW MOTOR FITTED


Fan Pump Wire Layer

Motor – Drive end bearing defect

Motor Replaced

February 2007

Fan Pump Wire Layer Motor ( Motor bearing defect) A E2 - Fan Pump Wire Layer

FPWL -M3P Motor Inboard Brg (Peak vue)Trend Display of WA VEFORM P-P


0 3 6 9 12 15 18 21 24 27

0

10

20

30

40

50

60

Days: 18-Jan-07 To 14-Feb-07

Pk-P

k W

avef

orm

in G

-s

ALERT

FA ULT

Date: T ime: Ampl:

14-Feb-07 09:34:41 2.323

BEFORE MOTOR CHA NGE

AFTER NEW MOTOR WA S FITTED

The trend above shows before and after the motor was changed due to severe bearing damage on the motor, caused by electrical erosion.

PK A

ccel

erat

ion

in G

-s

Frequency in CPM

A E2 - Fan Pump Wire LayerFPWL -M3H Motor Inboard Brg Horiz

0 20000 40000 60000 80000

Max A mp .49

Plot Scale

0

0.3

09:34:5114-Feb-07

13:32:3218-Jan-07

MOTOR BEA RING DEFECT - BEFORE REPLA CEMENT

READING A FTER NEW MOTOR WAS FITTED


paper case study

Documents

pump brg

motor replacementnew

end bearing

pump nde brg

insulated bearing

severe bearing damage

end pump

miv motor inboard brg