Roundness

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��Tank Name is a vertical Butt welded, mild steel cylindrical Tank, fitted with a coned up floor and

designated for Petroleum Product storage. The Tank has cone roof.

On behalf of our client, client name, we have performed a survey of the Tank to provide data to assist in

determining the compliance of the tank with API Standard 653 appendix B floor and shell settlement

specifications and to report on tank roundness.

The engineer on site during this survey on the 28th of October was Mr. Engineer of Client Company.

This report should be read in conjunction with API 653 Appendix B, particularly if the reader is not

familiar with the Standard and the terms used in it, as some of the terms are particular to the Standard.

The API 653 Appendix B standard provides for “ some judgment “ by the operator in the interpretation

of settlement data, particularly the determination of floor edge settlement break-over points and the

nomination of statistical outlying data for shell settlement in determination of the plane of rigid tilt and

the tank shell deflection.

We have exercised such judgment in good faith and provide illustrations of our working in this report;

and we have processed the data for the convenience of engineering personnel assessing the tank against

the API 653B standard. The ultimate responsibility therefore lies with the engineers in accepting the

information in this report and its suitability for deciding upon the condition of the tank consequently, we

are receptive to any requests from our client to re-process the tank data in accordance with their differing

interpretation of the API 653B standard.

The Standard acknowledges that the tank’s previous service history may be considered in evaluating

many of the aspects of settlement.

We cannot comment whether the apparent settlement of the tank represents the as built condition or is

settlement since construction. The API 653 settlement specifications assume the current condition to have

developed from a purely symmetrical tank, and as such should be viewed as a worst-case evaluation.

Other than by the methods described in API Standard 653 Appendix B, we do not attempt to calculate the

tank shell stresses that may be generated by tank settlement, as may be indicated by the analysis in this is

beyond our field of expertise.

All dimensions are in millimeters unless specified otherwise.

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��The tank floor of this tank has a coating of glass reinforced plastic.

During our survey, the plates were noticed to be buckled across large regions of the floor and spongy

under-foot. This should be considered when evaluating the floor survey results.

During the floor survey, the floor elevations were measured at specific intervals along 16 radii positioned

equidistantly around the floor perimeter.

Zero elevation corresponds with the lowest measured point on the floor.

The contour map shows an irregular coned up tank floor. As previously mentioned, due to Plate buckling

the undulations indicated on the map may not necessarily reflect the contour of the Foundation.

Localized Bottom Settlement Remote from Tank Shell

We have not identified any significant depressions or bulges in the floor remote from the tank shell,

particularly any such distortions that would exceed the recommended maximum stipulated in API

Standard 653 Section B.3.3.

Bottom Settlement near Tank Shell

We have not identified any significant depressions or bulges in the floor near the tank shell that are

outside the specification stipulated in API 653 Section B.3.3. As referred to by Section B.2.4.2 in

addressing this form of settlement.

Floor Edge Settlement

The evaluation method for floor edge settlement described in API 653 Section B.2.3.2b requires that a

straight line be extended from the “unsettled floor” along the floor, noting where the tank floor departs

from the straight line (the “break over” point) and where this extended line intersects the tank shell. The

manner in which a straightedge should be applied is not specified, nor is the length of the straight line.

The method used for this report involves the creation of scaled profile drawings of floor radii, by

connecting the measurement points along each radius with a spine curve. The original profile of the floor

is then extrapolated and traced with a straight line to determine the edge settlement dimensions at each

station.

An evaluation of the floor edge settlement at each station to API 653B specification appears in the table.

We have identified floor edge settlement along the radii at 16 measurement stations; however all the

settlement is Less than 75 percent of the API 653B maximum allowable specification. Above 75 percent,

further analysis would be required, according to API 653B.

FLOOR CONTOUR

Elevation in millimeters

Zero elevation corresponds with the lowest point on the floor

TANK ROUNDNESS SURVEY Tank No

INTERNAL OFFSETS (ADJACENT STATIONS)

(Moving Anti-clockwise)

14.671 m

36 -164 73 -56

10 -143 53 -49

12.454 m

23 -121 53 -70

13 -110 74 -70

9.962 m

21 -122 90 -36

23 -88 71 8

7.468 m7.468 m

22 -72 78 6

21 -67 59 11

4.972 m

16 -64 50 -13

8 -15 10 -5

2.490 m

0 0 0 0

-12 -2 -11 8

0.000 m

set out set in set out set in set out set in set out set in

All vertical positions on tank shell are at a distance of 11.780 metres apart

Station 1 is on South-East and aligned with inside tank datum plate / dipping pipe.

STATION 4STATION 3STATION 2STATION 1




14.671 m

-60 -60 -16 -3

-60 -41 -53 2

12.454 m

-52 -42 -10 -3

-54 -41 -8 -27

9.962 m

-31 -20 -16 -22

-26 -17 -18 -21

7.468 m7.468 m

-17 -3 -6 -18

-4 0 -1 22

4.972 m

2 0 0 18

8 4 -4 6

2.490 m

0 0 0 0

-18 5 1 -6

0.000 m

set out set in set out set in set out set in set out set in


STATION 5 STATION 6 STATION 7 STATION 8




14.671 m

-47 -99 -31 -9

-34 -54 -49 -24

12.454 m

-58 -80 -19 -43

-75 -65 -36 -8

9.962 m

-34 -48 -16 4

1 -34 3 7

7.468 m7.468 m

12 -33 0 2

15.6 -28.4 -9.4 3.6

4.972 m

11 -28 -10 5

12 3 4 -2

2.490 m

0 0 0 0

17 -7 -3 7

0.000 m

set in set out set in set out set in set out set in set out


STATION 12STATION 9 STATION 10 STATION 11




14.671 m

-9 -5 34 -71

-24 -23 -3 -32

12.454 m

-43 -20 18 -44

-8 -25 5 -21

9.962 m

4 14 29 -5

7 -29 29 8

7.468 m

2 -3 22 112 -3 22 11

4 13 17 -5

4.972 m

5 12 16 -15

-2 10 12 -1

2.490 m

0 0 0 0

7 -14 -4 1

0.000 m

set in set out set in set out set in set out set in set out


STATION 13 STATION 14 STATION 15 STATION 16

�Floor Edge Settlement Evaluation – API653B

API 653 Appendix B Floor Settlement Evaluation Criteria

1. Tanks with larger edge settlements then Bew/Be/Ba are to be repaired, or have detailed analysis of the floor, and floor to shell junction.

2. Welds in tanks with settlement greater then or 75% of Bew/Be/Ba and lerger then 2”, are to be inspected with magnetic particle or liquid penetrate examination.

3. Tanks with settlement less then 75% of Bew/Be/Ba may be returned to service.

4. An asterix preceding an evaluation comment denotes a settlement radius that exceeds the range of the graph provided by the standard (6 feet).

The Bew/Be/Ba value reported in the table is extrapolated from the graph/s

Tank diameter = 59.965 metres�

Station

�

Floor Weld Angle

within Settled Area�

API 653B Evaluation

Method Reference

Actual Settled Area

Radius R (mm)

Max Allowable Settlement

Bew/Be/Ba(mm)

Actual Edge Settlement

(mm)

Variation (mm)

Evaluation of settlement in accordance with API 653B Figures B-10,B-11 or Section B.3.4.3�

1 none B -11 29970.5 203.2 -12 191.2 �� 2 45 deg B.3.4.3 29980.5 203.2 -2 201.2 �� 3 none B -11 29971.5 203.2 -11 192.2 �� 4 90 deg B.3.4.3 29990.5 203.2 8 211.2 �� 5 none B -11 29964.5 203.2 -18 185.2 �� 6 135 deg B.3.4.3 29987.5 203.2 5 208.2 �� 7 none B -11 29983.5 203.2 1 204.2 �� 8 180 deg B.3.4.3 29976.5 203.2 -6 197.2 �� 9 none B -11 29999.5 203.2 17 220.2 ��

10 225 deg B.3.4.3 29975.5 203.2 -7 196.2 �� 11 none B -11 29979.5 203.2 -3 200.2 �� 12 270 deg B.3.4.3 29989.5 203.2 7 210.2 �� 13 none B -11 29989.5 203.2 7 210.2 �� 14 315 deg B.3.4.3 29968.5 203.2 -14 189.2 �� 15 none B -11 29978.5 203.2 -4 199.2 �� 16 360 deg B.3.4.3 29983.5 203.2 1 204.2 ��

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TANK BOTTOM SURVEY Tank No.

Floor Profile Survey Data

Station

1 2 3 4 5 6 7 8

29.98 37.0 43.0 38.0 29.0 43.0 38.0 51.0 38.0

27.9 36.0 41.0 36.0 27.5 40.0 35.0 49.0 35.0

25.9 34.0 38.5 33.0 26.0 37.5 33.0 46.0 32.0

23.9 30.5 37.0 32.0 24.5 35.0 31.5 45.0 30.0

21.9 28.0 32.5 28.0 22.0 32.0 28.0 40.5 28.0

19.9 26.5 31.5 25.0 18.0 30.0 25.0 39.5 25.0

18 22.5 28.5 24.0 16.0 26.0 24.0 39.0 22.0

16 20.0 23.0 20.0 15.5 22.0 22.5 36.0 20.0

14 14.5 25.5 18.0 14.5 20.0 21.0 34.0 17.0

11 14.5 15.5 15.0 13.5 15.5 17.5 29.0 16.0

8 12.0 13.5 13.5 13.5 13.5 13.5 23.5 11.0

6.5 9.0 12.5 10.0 11.5 12.5 10.0 20.0 8.0

4 4.0 5.5 5.0 6.0 5.5 5.0 14.0 5.0

1.5 5.0 5.0 5.8 8.0 5.0 3.0 11.0 7.0

0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Metres from tank shell ( Elevations are in cm )


TANK BOTTOM FLOOR PROFILE FROM CENTRE (CONE UP) Page 1 of 3

TANK NO: QP-TK-QJA-8Qater Petroleum

CENTRELINE TANK SHELL SIDE

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

dep

th

positions

Segment 1 (over datum plate)

0.05.0

10.015.020.025.030.035.040.045.050.0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

dep

th

positions

Segment 2 (45 deg clockwise)

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

dep

th

positions


0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

dep

th

positions






0.0

5.010.015.020.025.030.0

35.040.045.050.0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

dep

th

positions


0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

dep

th

positions

Segment 6 225 deg clockwise)

0.0

10.0

20.0

30.0

40.0

50.0

60.0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

dep

th

positions


0.05.0

10.015.020.025.030.035.040.0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

dep

th

positions


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A survey of tank shell was performed in accordance with ISO standard 7507, to obtain verticality data at

two heights of each strake (measured with optical equipment along 16 vertical station around the tank

exterior) and a tank reference circumference corresponding with the strake 1 upper section verticality

reading.

To provide a report on the roundness of the tank shall, we have also determined the internal radii at each

measurement station at 310 millimeters above the base of the tank shell.

The internal radii are derived from”Disto”leaser ranging (offset) measurements taken within the tank

from a fixed point to each station around the lower section of strake 2.These readings are adjusted using

the tank shall verticality measurements to give an equivalent reading at 310 millimeters above the tank

base. The tank centroid is computed from the adjusted offsets and the radius between the centroid and

each measurement station calculated, as reported in the table below.

Radii at 310mm above tank base

The maximum radius variation at 310 millimeters above the base of the tank shell is 15 millimeters.

Following are the deviations between the average radius and radius at each individual station:

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Station Radius of

tank

Centroid

1 29.991

2 29.968

3 29.993

4 29.978

5 29.991

6 29.979

7 29.979

8 29.989

Station Radius of

tank

Centroid

9 29.995

10 29.986

11 29.987

12 29.981

13 29.992

14 29.993

15 29.995

16 29.982

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Tank Shell Settlement Evaluation

Actual Edge

Settlement 37 35 43 40 38 31 29 33 43 32 38 45 51 47 52 38

Plane of Rigid Tilt 33 36 41 44 48 51 53 50 45 40 35 30 25 22 22 27

Out-of-Plane

Settlement 4 -1 2 -4 -

10

-

20

-

24

-

17

-2 -8 3 15 26 25 20 11

Stations 6, 7, 12, 13 & 14 ignored for the determination of the optimum cosine curve.

Optimum Cosine curve (Plane of rigid tilt) R2 value = 0.74

Evaluation of Out-of-Plane deflection

Stations 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Out-of-Plane

deflection

5 6 -2 2 -6 -7 2 -4 3 -2 8 4 6 11 9 -1

API Standard 653 (B.3.2) approximation for maximum permissible Out-of-Plane deflection is 24 mm

The standard suggests further assessment or repair if the deflection exceeds the permissible value.

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AVERAGE SHAPE OF TANK BOTTOM

CONE-UP PROFILE

(ALL DEPTH IN CM)


39.637.4

35.033.2

29.927.6

25.322.4

20.6

17.114.3

11.7

6.3 6.25.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0


6.3 6.2

0.00.0

5.0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Series1 39.6 37.4 35.0 33.2 29.9 27.6 25.3 22.4 20.6 17.1 14.3 11.7 6.3 6.2 0.0

0.05.0

10.015.020.025.030.035.040.045.0

dep

th

positions

AVERAGE SHAPE OF BOTTOM (DEPTH FROM TANK BOTTOM)

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A survey of tank shell was performed in accordance with ISO standard 7507, to obtain verticality data at

two heights of each strake (measured with optical equipment along 16 vertical station around the tank

exterior) and a tank reference circumference corresponding with the strake 1 upper section verticality

reading.

To provide a report on the roundness of the tank shall, we have also determined the internal radii at each

measurement station.

The internal radii are derived from”Disto”leaser ranging (offset) mearsuements taken within the tank

from a fixed point to each station around the upper section of strake1.These readings are adjusted using

the tank shall verticality measurements to give an equivalent reading. The tank centroid is computed from

the adjusted offsets and the radius between the centroid and each measurement station calculated.


Internal Offsets corrected for plate thickness - millimetres * Top = 80%, Bott = 20%

Negative value = Tank Set IN ** Reference station at 70%

1 2 3 4 5 6 7 8

Course Thk (m)

1 - top ** 0.0206 0 0 0 0 0 0 0 0

1 - bott 0.0206 -12 -2 -11 8 -18 5 1 -6

2 - top 0.0164 16 -64 50 -13 2 0 0 18

2 - bott 0.0164 8 -15 10 -5 8 -4 -4 6

3 - top 0.0130 22 -72 78 6 -17 -3 -6 -18

3 - bott 0.0130 21 -67 59 11 -4 0 -1 22

4 - top 0.0097 21 -122 90 -36 -31 -20 -16 -22

4 - bott 0.0097 23 -88 71 8 -26 -17 -18 -21

5 - top 0.0080 23 -121 53 -56 -52 -42 -10 -3

5 - bott 0.0080 13 -110 74 -70 -54 -41 -8 -27

6 - top 0.0080 36 -164 73 -56 -67 -60 -16 -3

6 - bott 0.0080 10 -143 53 -49 -60 -41 -53 2

9 10 11 12 13 14 15 16

Course Thk (m)

1 - top ** 0.0206 0 0 0 0 0 0 0 0

1 - bott 0.0206 17 -7 -3 7 -3 -14 -4 1

2 - top 0.0164 11 -28 -10 5 13 12 16 -15

2 - bott 0.0164 12 3 4 -2 9 10 12 -1

3 - top 0.0130 12 -33 0 2 13 15 22 11

3 - bott 0.0130 16 -28 -9 4 12 13 17 -5

4 - top 0.0097 -34 -48 -16 4 9 14 29 -5

Station

Station

4 - top 0.0097 -34 -48 -16 4 9 14 29 -5

4 - bott 0.0097 1 -34 3 7 25 -29 29 8

5 - top 0.0080 -58 -80 -19 -43 12 -20 18 -44

5 - bott 0.0080 -75 -65 -36 -8 10 -25 5 -21

6 - top 0.0080 -47 -99 -31 -9 31 -5 34 -71

6 - bott 0.0080 -34 -54 -49 -24 26 -23 -3 -32

MAXIMUM OFFSET SET IN = -164 MM

MINIMUM OFFSET SET OUT = 90 MM

CORRECTED EXTERNAL CIRCUMFERENCE AT REFERENCE COURSE 1 = 188.515 M

CORRECTED INTERNAL DIAMETER AT REFERENCE COURSE 1 = 59.965 M

INTERNAL RADIUS = 29.983 M at reference course (Carried out by ISO 7507 method)

Opposing station internal offsets - Calculated internal diameter - metres

1 & 9 2 & 10 3 & 11 4 & 12 5 & 13 6 & 14 7 & 15 8 & 16

Course

1 - top ** 59.965 59.965 59.965 59.965 59.965 59.965 59.965 59.965

1 - bott 59.970 59.956 59.951 59.980 59.944 59.956 59.962 59.960

2 - top 59.992 59.873 60.005 59.957 59.980 59.977 59.981 59.968

2 - bott 59.985 59.953 59.979 59.958 59.982 59.971 59.973 59.970

3 - top 59.998 59.859 60.042 59.972 59.960 59.976 59.980 59.957

3 - bott 60.001 59.869 60.014 59.979 59.972 59.977 59.980 59.981

4 - top 59.952 59.795 60.039 59.933 59.943 59.959 59.978 59.938

4 - bott 59.989 59.843 60.039 59.980 59.964 59.919 59.976 59.952

5 - top 59.929 59.763 59.998 59.865 59.924 59.902 59.972 59.917

5 - bott 59.902 59.789 60.002 59.886 59.920 59.898 59.961 59.916

6 - top 59.953 59.701 60.006 59.899 59.928 59.899 59.982 59.890

6 - bott 59.940 59.767 59.968 59.891 59.930 59.900 59.908 59.934

MAXIMUM DIAMETER = 60.042 M MINIMUM DIAMETER = 59.701 M

MAXIMUM TANK SET OUT = 77 MM MAXIMUM TANK SET IN = -264 MM

Opposing Station


Opposing station internal offsets - metres

1 & 9 2 & 10 3 & 11 4 & 12 5 & 13 6 & 14 7 & 15 8 & 16

Course

1 - top ** 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000

1 - bott 0.005 -0.009 -0.014 0.015 -0.021 -0.009 -0.003 -0.005

2 - top 0.027 -0.092 0.040 -0.008 0.015 0.012 0.016 0.003

2 - bott 0.020 -0.012 0.014 -0.007 0.017 0.006 0.008 0.005

3 - top 0.033 -0.106 0.077 0.007 -0.005 0.011 0.015 -0.008

3 - bott 0.036 -0.096 0.049 0.014 0.007 0.012 0.015 0.016

4 - top -0.013 -0.170 0.074 -0.032 -0.022 -0.006 0.013 -0.027

4 - bott 0.024 -0.122 0.074 0.015 -0.001 -0.046 0.011 -0.013

5 - top -0.036 -0.202 0.033 -0.100 -0.041 -0.063 0.007 -0.048

5 - bott -0.063 -0.176 0.037 -0.079 -0.045 -0.067 -0.004 -0.049

6 - top -0.012 -0.264 0.041 -0.066 -0.037 -0.066 0.017 -0.075

6 - bott -0.025 -0.198 0.003 -0.074 -0.035 -0.065 -0.057 -0.031

1 2.490

2 2.482

3 2.496

4 2.494

5 2.492

Opposing Station

Course

(Ring)

Course

ht (m)

2.490

4.972

7.468

9.962

Cumulative

course ht (m)

12.4545 2.492

6 2.217

12.454

14.671


14.671 m

36 59.953 m -47

6th course

10 59.940 m -34

12.454 m

23 59.929 m -58

5th course

13 59.902 m -75

9.962 m

21 59.952 m -34

4th course

23 59.989 m 1

7.468 m

INTERNAL OFFSETS (OPPOSING STATIONS) IN MM

7.468 m

22 59.998 m 12

3rd course

21 60.001 m

16

4.972 m

16 59.992 m 11

2nd course

8 59.985 m 12

2.490 m

0 59.965 m (Reference diameter) 0

1st course

-12 59.970 m 17

0.000 m

set out set in set in set out

(South East - station externally aligned

to inside datum plate / dipping pipe line) *Not to scale, magnified for clarity

INTERNAL DIAMETER

Station 1 Station 9

+300 0 -300 +300 0 -300


14.671 m

-164 59.701 m -99

6th course

-143 59.767 m -54

12.454 m

-121 -0.202 m -80

5th course

-110 59.789 m -65

9.962 m

-122 59.795 m -48

4th course

-88 59.843 m -34

7.468 m


7.468 m

-72 59.859 m -33

3rd course

-67 59.869 m

-28

4.972 m

-64 59.873 m -28

2nd course

-15 59.953 m 3

2.490 m


1st course

-2 59.956 m -7

0.000 m


*Not to scale, magnified for clarity

Station 10

INTERNAL DIAMETER

+300 0 -300 +300 0 -300

Station 2


14.671 m

73 60.006 m -31

6th course

53 59.968 m -49

12.454 m

53 59.998 m -19

5th course

74 60.002 m -36

9.962 m

90 60.039 m -16

4th course

71 60.039 m 3

7.468 m

78 60.042 m 0


78 60.042 m 0

3rd course

59 60.014 m

-9

4.972 m

50 60.005 m -10

2nd course

10 59.979 m 4

2.490 m


1st course

-11 59.951 m -3

0.000 m



INTERNAL DIAMETER

+300 0 -300 +300 0 -300

Station 3 Station 11


14.671 m

-56 59.899 m -9

6th course

-49 59.891 m -24

12.454 m

-70 59.865 m -43

5th course

-70 59.886 m -8

9.962 m

-36 59.933 m 4

4th course

8 59.980 m 7

7.468 m

6 59.972 m 2


6 59.972 m 2

3rd course

11 59.979 m

4

4.972 m

-13 59.957 m 5

2nd course

-5 59.958 m -2

2.490 m


1st course

8 59.980 m 7

0.000 m



+300 0 -300 +300 0 -300


INTERNAL DIAMETER


14.671 m

-60 59.928 m 31

6th course

-60 59.930 m 26

12.454 m

-52 59.924 m 12

5th course

-54 59.920 m 10

9.962 m

-31 59.943 m 9

4th course

-26 59.964 m 25

7.468 m

-17 59.960 m 13


-17 59.960 m 13

3rd course

-4 59.972 m

12

4.972 m

2 59.980 m 13

2nd course

8 59.982 m 9

2.490 m


1st course

-18 59.944 m -3

0.000 m




INTERNAL DIAMETER

+300 0 -300 +300 0 -300


14.671 m

-60 59.899 m -5

6th course

-41 59.900 m -23

12.454 m

-42 59.902 m -20

5th course

-41 59.898 m -25

9.962 m

-20 59.959 m 14

4th course

-17 59.919 m -29

7.468 m

-3 59.976 m -3


-3 59.976 m -3

3rd course

0 59.977 m

13

4.972 m

0 59.977 m 12

2nd course

4 59.971 m 10

2.490 m


1st course

5 59.956 m -14

0.000 m



INTERNAL DIAMETER

+300 0 -300 +300 0 -300



14.671 m

-16 59.982 m 34

6th course

-53 59.908 m -3

12.454 m

-10 59.972 m 18

5th course

-8 59.961 m 5

9.962 m

-16 59.976 m 29

4th course

-18 59.976 m 29

7.468 m

-6 59.980 m 22


-6 59.980 m 22

3rd course

-1 59.980 m

17

4.972 m

0 59.981 m 16

2nd course

-4 59.973 m 12

2.490 m


1st course

1 59.962 m -4

0.000 m



INTERNAL DIAMETER


+300 0 -300 +300 0 -300


14.671 m

-3 59.890 m -71

6th course

2 59.934 m -32

12.454 m

-3 59.917 m -44

5th course

-27 59.916 m -21

9.962 m

-22 59.938 m -5

4th course

-21 59.952 m 8

7.468 m

-18 59.957 m 11


-18 59.957 m 11

3rd course

22 59.981 m

-5

4.972 m

18 59.968 m -15

2nd course

6 59.970 m -1

2.490 m


1st course

-6 59.960 m 1

0.000 m




INTERNAL DIAMETER

+300 0 -300 +300 0 -300


Ring # : 1 Top

12

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Datum Plate

1 Bottom

Reference ring

Current ring


1

12

3

4

5

6

7

8

9

10

11

12

13

14

15

16


Ring # : 2 Top

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Ring # : 2 Bottom

Reference ring

Current ring

12 16

12

3

4

5

6

7

8

9

10

11

12

13

14

15

16


Ring # : 3 Top

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Ring # : 3 Bottom

Reference ring

Current ring

12 16

12

3

4

5

6

7

8

9

10

11

12

13

14

15

16


Ring # : 4 Bottom

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Ring # : 4 Top

Reference ring

Current ring

12 16

12

3

4

5

6

7

8

9

10

11

12

13

14

15

16


Ring # : 5 Top

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Ring # : 5 Bottom

Reference ring

Current ring

12 16

12

3

4

5

6

7

8

9

10

11

12

13

14

15

16


Ring # : 6 Top

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Ring # : 6 Bottom

Reference ring

Current ring

12 16

12

3

4

5

6

7

8

9

10

11

12

13

14

15

16

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Roundness

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