Tanks Installation Manual

ASALUYE

Process Engineering and Contracting Division

PARS PETROCHEMICAL

C2+ RECOVERY AND FRACTIONATION PLANT

NARGAN Linde Project No.: 21101055 Linde Job Code: Asaluye Linde Doc. No.: BMM50005

NARGAN Proj-No.: NARGAN Job Code:

N-178

COMPANY Owner Project No.: 3910 Owner Job Code: PPC-RFP Owner Doc. No.: 10-VD-A4-PV-014-084-L

Installation Manual TP-000-16 (Page 1-32)

and attachment: Welding Sequence Bottom and Shell (Page 1- 13)

and attachment: Assembly Procedure of Erection Openings (Page 1- 3)

Tk-No. 10-TK-0661-Propane Tk-No. 10-TK-0662-Butane Inner Tank Dia: 40 000 mm Outer Tank Dia: 42 200 mm Linde P.O. No.: 2 DE 466

04

01.11.02

49

Stelck

Tacke

R. Schulte

revised per comments

P

03

27.08.02

30

Stelck

Tacke

R. Schulte


P

02

26.04.02

Stelck

Tacke

R. Schulte


P Status

01 Issue

21.03.02 Date

30 30 Pages

Stelck Prepared

Tacke Checked

van Ommen Approved

Remarks

Intellectual property rights reserved.

a d a p t GmbH the project manager for cryogenic and atmospheric tanks

ERECTION SEQUENCE TANK 0661 / 0662

a d a p t GmbH Project

P - 01-1021

Field painting - Coating before in position.

X Ray 25% min 150mm 150

Reference: Anchor straps Drawing Inner Tank No: 19 Outer Tank No: 18 Bottom of outer tank No: 07

Leveling course

Foundation Slab

Outer tank annular plate

Client: Linde Process Engineering and Contracting division Project No.: 2110 1055 ASALUYE Linde Doc.No.: BMM 50005 Owner Doc. No.: 10-VD-A4-PV-014-084L

Welding : according to applicable WPS Inspection: X-Ray ( 25%), visual and Vacuum-Box-Test acc. to T.i.P. TP-000-06, Length of X-Ray-film : min 150mm ( 6 in)

Outer tank bottom

Page 1 of 32 TP-000-16, Rev. 04




P - 01-1021

Erection of outer tank shell course 1 A) in about 100 mm lifted position 1. Welding vertical weld seams as per applicable WPS 2. X -Ray and visual Examination as per T.i.P. (TP-000-06) B) positioning 3. Put down 4. Annular plate and shell plate tack weld

about 100

Erection of outer tank shell course 1


Page 2 of 32 TP-000-16, Rev. 04




P - 01-1021

course 2 353

350

188

Welding of outer tank shell course 2 vertical weld seams and horizontal weld seam acc. to applicable WPS, Inspection: Visual, 100% X-Ray vertical joints, 100% X-Ray of all intersections of joints, Spot X-Ray and Magnetic-Particle Examination of horizontal joints as per T.i.P ( TP-000-06 )

course 1 min. 300 891 1100 Step 2

1388

Outer tank anchor min. 300

Erection of outer tank shell course 2


see drawing no. 21:

4.300

Step 1

Step 2

Temporary Erection Opening in shell course 1 after welding of shell course 2 Step 1 = 4300 x height of course 1 Step 2 = 2700 x height of course 1 - 300+891 = 1100mm after water hydrotest for outer tank

Page 3 of 32 TP-000-16, Rev. 04


Welding acc. to applicable WPS Inspection acc. to T.i.P ( TP-00-20 ) visual, X-Ray and Vacuum- Box



max load (dead weight) from inner tank shell 2,50 tos / m

P - 01-1021

Welding of Shell Course 1 to annular plate after erection of course 2 acc. to appl. WPS Inspection acc. to T.i.P ( TP-000-06 ) visual, Vacuum Box Test and Magnetic Penetrant Test.

X Ray 25% min 150mm

about 100 150

Distance between the top of O.T annular plate to the below of I.T.annular plate = 450mm see Drawing No.T-0661-01

1.) inner tank annular plate


place Steel Blocks free of bottom welds Distance between the blocks = 2,0m

2.) inner tank shell course 1

Tolerances of inner tank annular plates: see Drawing No. T-0661-18 Tolerances of Foundation 2m 3.) inner tank shell course 1 with annular plate tack weld

Page 4 of 32 TP-000-16, Rev. 04




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Welding: All welding shall be carried out acc. to applicable WPS Inspection acc. T.i.P ( TP-00-20 ) Visual Inspection of all welds Radiographic Examination. Vacuum Box- Examination

Erection of outer tank course 3 thru 12 and compression bar, and outer shell stiffeners Storm guy 13,0mm dia wire rope for wind blow in. Position 15 anchor points equally spaced at 55mtrs radius

Erection of inner tank shell course 3 thru 11 and top shell stiffener

100 x 5 Flat Tie Bar Make provision for temporary ties between inner tank and outer tank-to installed hen high wind is forecast

Erection-welder cages 2 x for Erection and welding 1 x for Inspections and Tests

2)

1)

Erection of-inner shell top stiffener A) positioning on shell 1) Welding radial weld seams acc WPS 2) Welding horizontal weld seams acc toWPS

Scaffolding for shell in annular space

Temporary Erection Opening of inner tank shell, see drawing no. 22

Erecting of insert plates for Nozzle N03 at inner and outer tank Storm Guys required above this level ( course 4 )

4.300

max. about 45°

45,00 m radius


Page 5 of 32 TP-000-16, Rev. 04




P - 01-1021

Erection of outer tank shell course 3 thru 12 and compression bar, and outer and inner tank shell stiffener Erection of outer tank compression bar A)1. Welding acc. to applicable WPS 2. X- Ray min 25% and visual examination B)3.welding inner and outer fillet weld acc. to appl. WPS 4. Visual Examination


Page 6 of 32 TP-000-16, Rev. 04

a d a p t GmbH the project manager for cryogenic and atmospheric tanks clear span crown ring


ERECTION SEQUENCE TANK 0661 / 0662 2.310

P - 01-1021

max =1.400 for the center column ( suspended deck ) 2.400 1200

Height to top of outer shell see Drawing No.: 01 / 08

Erection of crown Ring, see Drawing No. 33

17 330

5.686 100 filler plate rd.100mm

Erecting platform

3.000 bracket U 300

stay rope rope /6x13,0mm

1.980 Erection Opening suspended deck

safety net diagonals L 80x80x8

Ladder

central support support for max 1/3 dead weight roof round (60 tons)

26.200 1200

1200

45° collumns HEB 140

Plate 20mm 300x300


Page 7 of 32 TP-000-16, Rev. 04




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1/18 segment-suspended- deck acc.drawing no.:T-0661-23 Weight T-0661-23 T-0661-24 T-0661-25

18 segment 5439 kg 5033 kg 6457 kg 16929 kg

1 segment 302 kg 280 kg 359 kg 941 kg

Roof Rafters

section A-A A RAFTER

50

365

RAFTER 6633

RAFTER

R = 1050 365 R=

25

19100

30 R = 2325

RAFTER

5.686

6.789

A

top of O.T.Shell 26.200

top of Roof 31.911


8123 1.468

24.732

6 18.050 R=

R= 1050

19.100

Outer Tank


Page 8 of 32 TP-000-16, Rev. 04


adapt


GmbH Project

P - 01-1021

0°

A

1 / 18 segment of suspended deck and 3 x raffters

270°

A

90°

180°

SECTION A - A 1 / 18 segment of suspended deck Hangers only for erection

1 / 18 segment of suspended deck


Page 9 of 32 TP-000-16, Rev. 04

a d a p t GmbH the project manager for cryogenic and atmospheric tanks 1/18 segment-suspended- deck acc.drawing no.:T-0661-23 with 3 rafters IPE 300 or IPE 360 or IPE 500 incuded interm. stiffeners

P - 01-1021

17

Roof Rafters

8123

R=

A

2444



271

10.978

section A-A

271

RAFTER

50

299

2026

RAFTER 6633

365

2444 RAFTER

top of Roof 31.911

R = 1050

271

25 365 2444 R = 2325

RAFTER

A

R=

8.033

R= 21006 top of O.T.Shell 26.200 65

5.686

6.789

2.000 IPE 300=229 IPE 360=281 IPE 500=404 52 123

top of O.T.Shell 26.200 1.533 1.468

24.732

6

18.050 R=

19.100

R= 1050

6.000

Outer Tank


Page 10 of 32 Revision 04




P - 01-1021

3 rafters with (3) = 1/18 suspended deck

suspended deck

Errection of outer tank roof rafters with segment of suspended deck


stay rope

2 8

6


3

4

5 7


1

Erecting platform for segment of suspended deck and roof rafters in ground position Hangers for suspended deck, see Drawing no. 23, 24, 25






P - 01-1021

Erection of hangers for suspended deck and erecting platform for suspended deck Welding acc. to applicable WPS Visual inspection acc to T.i.P. ( TP-000-06 )

3 Rafters = 1 / 18






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scaffold board - wood

WALKING ON THE SUSPENDED DECK general max loads at roof plates a = 100,0 kg/m2

1.)Erection of tank roof plates, see Drawing No. 10 2.) Continue welding acc. to appl. WPS 3.) Visual Inspection according to T.i.P ( TP-000-06 )

safety net

max load without Scaffold board ( plywood) a one person

scaffold board -wood

max load with Scaffold board ( wood ) a two person or max 100 kg/m2






P - 01-1021

Note to Field: Use Leftover from Field Cutting Sketch drawing no.-30

15mm erecting of horizontal and vertical stiffeners erecting of pads for piping +anchor pads +water spray +steel structure ++++ Erecting of inner shell ladder 813 x 12,7

Welding acc. to appl. WPS Inspection acc. T.i.P ( TP-000-06 ) Visual; Magnetic Penetrant Examination

Temporary Erection Openig welding, 100% X Ray acc. to T.i.P ( TP-000-06 ) and visual Inspection; Vacuum / MP

Opening for Pump Suction Nozzle N03 on shell, see drawing no. 43

use Nozzle N03 for water test and draining






P - 01-1021

For Outer Tank Hydrostatic Test and Filling Height, refer to Procedure No............ welding of outer anchors as per WPS at partial water filling, see Drawing No. 18. Inspection acc. to T.i.P: visual and Magnetic-Penetrant Examination. after Hydrostatic Test perform vacuum box test of bottom welds






P - 01-1021

max loads from innertank = 2,50 tons / m

Remove annular plate support blocks

Hydraulic press only to removal the supports

wood cotter






P - 01-1021

length of one shell plate Height between inner and outer bottom see Drawing No. 0661(2)-01

hydraulic press min = 25 tonns pressure

to install of hard wood blocks

wood cotter to install

Concrete layer 100 mm to install






P - 01-1021

lenght of one shell plate Hight of inner tank bottom see drawing: T 0661-1 / T 0662-1

hydraulik press min = 25 tonns pressure

to install of hard wood blocks wood cotter to install

60 40

wood cotter 40 x 60 x 480

30 505 Stück pro Tank 480

60 wood cotter 60 70 x 60 x 500 70 505 Stück pro Tank 500 crack / round 10 - 30 mm

wood cotter


wood cotter





P - 01-1021

Erecting of roof nozzles and manhole

place base layer of concrete leveling layer






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Suspension cable

Chain hoist monorail

Erection opening

Complete installation of bottom insulation and sand layer






P - 01-1021

2.) Erect inner tank internal piping and ladder 2a) Welding acc to appl. WPS 2b) Inspection acc to T.i.P Visual and Magnetic Particle Test Solution Test of Reinfocement plates Nozzles

1.) Erection of inner tank bottom 1a) welding acc. to applicable WPS 1b) Inspection acc. T.i.P: visual and Vacuum-Box-Test






P - 01-1021

Erection of steel structure on roof and outer shell stairway

Closing of access opening at inner tank shell. Welding according to applicable WPS Inspection: Visual and 100% X-Ray acc. to T.i.P ( TP-000-06 )

Erect of Suction Nozzle NO3 Welding according to applicable WPS Inspection: Visual 100% X-Ray acc. to T.i.P ( TP-000-06 ) and Vacuum


Weather Protection Wetterschutz





P - 01-1021

Erecting and welding of inner tank anchor pads. Welding acc. to applicable WPS Inspection acc. to T.i.P ( TP-000-06 ) visual; MP






P - 01-1021

without Over pressure

Hydro-water-test Welding of inner tank anchors to be done during partial water filling of inner tank (see Drawing No. 19), but before applying any air pressure. Hight Level of water filling see HPT- TP-000-08

acces openig






P - 01-1021

Blinds to be provided at Site by Others

Over pressure Under pressure

For Hydro Water Test see Procedure No. TP-000-08 Closing of access opening at outer tank shell. Welding acc. To applicable WPS Inspection acc. To T.i.P. (TP-000-06) visual; 100% X-Ray; 100% Vacuum-Box-Test


welding of erecting opening and he rest of outer tank anchor strabs. before applying any over pessure !





P - 01-1021

Blinds to be provided at Site by Others

Over pressure Under pressure

after over pressure test open the erection opening.

Erecting opening for foam insulation 900mm diameter






P - 01-1021

Erecting opening

Painting of outer and inner tank shell

Before painting : Draining and cleaning of the inside of tanks.






P - 01-1021

erecting oppening. one roof plate

PU - Insulation at inside of outer tank shell after PU - Insulation erretion of piping in shell annular space on wood

After PU - Insulation close the erretion opening welding acc. TIP -TP-000-06 WPS 100% X Ray and visual,vacuum Foam maschins and Foam components on the floor. Alternativ on top of platform






P - 01-1021

Roof plate oppening

PU - Insulation at inside of outer tank shell in part of errection opening

0






P - 01-1021

close suspended deck annular space

0






P - 01-1021

Insulation of suspended deck

0






Erection of tank roof rafters 1 x IPE 500 and 2 x IPE 300 and 1/18 of suspended deck - about 4,50 +1,00 = ( 5,50 tons )

P - 01-1021

max Top of hook

50,000 m

max

or 3 x IPE 360 and 1/18 of suspended deck- about 4,00+1,00 =( 5,00 tons)

60,000 m

10,000 m 8,000 m Top of roof

32,000 m

5,000 m 6,000 m

Erection of tank roof crown ring about 8,30 tonns

stay rope max 5,00 tonns

2

6

8 4

3 7 5

1

0 max weight is shell plate course 1 outer

Erecting platform for roof rafters in ground position

Top of foundation

0,000 m Hangers for suspended deck

Tank Diameter

45,000 m

10,000 m


Page 32 of 32 TP-000-16, Rev. 04


adapt


GmbH Project

P - 01-1021

5000

5000

9820

9156

0° 2026

A

1 / 18 segment of suspended deck and 3 x raffters centroid

150

A

270°

90°

150

180°

centroid SECTION A - A 1 / 18 segment of suspended deck Hangers only for erection

1 / 18 segment of suspended deck



a d a p t GmbH the project manager for cryogenic and atmospheric tanks 1/18 segment-suspended- deck acc.drawing no.:T-0661-23 with 3 rafters IPE 300 or IPE 360 or IPE 500 incuded interm. stiffeners

P - 01-1021

17

Roof Rafters

8123

R=

A

2444



271

10.978

section A-A

271

RAFTER

50

299

2026

RAFTER 6633

365

centroid susp.

2444 RAFTER

top of Roof 31.911

R = 1050

150

271

25 365 2444 RAFTER

R=

12.085

5.686

6.789

centroid (3xraffters+1/18suspended deck)

R= 21006 top of O.T.Shell 26.200 65

R = 2325

centroid raffters A

2.000 IPE 300=229 IPE 360=281 IPE 500=404 52 123

R=

11.850


1.533 1.468

24.732

6

18.050 R=

19.100

R= 1050

6.000

Outer Tank




TIME SCHEDULE

For Ad

The erecting opening at the Inner and Outer Tank Shell will be installed during the fabrication of the Inner and Outer Tank Shell.

2.

Before start up with the hydrotest of the Outer Tank, the erection opening will be closed, completely welded and NDE tested.

3.

At hight water level of the Outer Tank ( 20.374 mm ), the anchor straps of the Outer Tank will be welded and NDE - tested, without three or four anchor straps

4.

In this area a second erection opening has to be installed at the Outer Tank Shell, after the Tank was emptied.

5.

Before filling the Inner Tank with water, the erection opening at the Inner Tank Shell has to be closed and NDE-work should be carried out satisfactory.all

6.

Thereafter, close the second erection opening and carry out all NDE-work.

7.

Before start up with the Pneumatic Test, welding and testing of the three or four anchor staps shall be finished.

8.

The anchor straps of the Inner Shell shall be welded, when the Inner Tank is emptied up to a water filling height of 7.366 mm.

9.

A third erection opening at the Outer Tank Shell and additional an erection opening at the roof is required, to place the insulation.

10.

At the least, when all the work is finished, the third erection opening at the Outer Tank Shell and the additional erection opening at the roof shall be closed and NDE tested.

8

9

P - 01-1021

Opening / Closing Erection Openings Welding Anchor Straps 1.

10



10


1 1

2

3

1

4

5

7

6

8

9 10




ERECTION SEQUENCE TANK 0661 / 0662 Hart wood blocks

P - 01-1021

273

175

500 / 600

15

450

350

85

35

180

300

35

60

270

100

150

10

60

270

5

8,0mmx60x500

5

100X50X5 100 x 50 x 10

5 25

20

500 50 20 60

20

70

5,0mmx60x500 40 60

50

35

180

300

35

300

30 60

60

PROPOSAL for the ercting of hart wood blocks Client: Linde Process Engineering and Contracting division Project No.: 2110 1055 ASALUYE Linde Doc.No.: BMM 50005 Owner Doc. No.: 10-VD-A4-PV-014-084L

200

1000


PARS

ASALUYE


Petrochemical


NARGAN COMPANY

Linde Project No.: 2110 1055 Linde Job Code: Asaluye Linde Doc. No.:

NARGAN Project No.: NARGAN Job Code:

N-178

Company Owner Project No.: 3910 Owner Job Code.: PPC-RFP Owner Doc. No.: Page 1 of 13

Installation Manual TP-000-16 attachment: Welding Sequence Bottom and Shell (Page 1 – 13)

10-TK-0661 and 10-TK-0662 P.O. No. 2DE466

Status

01 Issue

01.11.02 Date

Description

13 Pages

Tacke Prepared

D. Hensel Checked

Stelck Approved

ASALUYE C2+ RECOVERY AND FRACTIONATION PLANT


attachment: Welding Sequence Bottom and Shell a d a p t Ref.: P 01-1021, Rev. 2

a d a p t Doc. No. : attachment to TP-000-16

CONTENTS

Issue 1

PARS Petrochemical Company

Page 2 of 13

Page

1.

Scope

3

2.

Annular Plates Outer and Inner Tank

3

3.

Outer Bottom

3

4.

Outer Shell

4

5.

Inner Shell

4

6.

Inner Bottom

5

7.

Remarks

5

Attachment No. 1 Attachment No. 2 Attachment No. 3 Attachment No. 4 Attachment No. 5 Attachment No. 6 Attachment No. 7 Attachment No. 8

6 7 8 9 10 11 12 13





Issue 1


Page 3 of 13

1.0 Scope This specification shall be used to minimize deviation to flatness. 2.0 Annular Plates Outer and Inner Tank (attachment 1) for layout the annular plates see drawing: T-0661/2-07: Outer Bottom with annular plates T-0661/2-13: Inner Bottom with annular plates The annular plates will be single-V-groove welded with backwelding. After tackwelding start with welding the annular plates always from inside to outside (A01, A02 up to A24), but reserve each fourth weld seam (A04, A08 .... A24) as a shrinking seam. These joints shall be welded at least and start at four opposite joints, if possible. 3.0 Outer Bottom For layout see drawing no. T-0661-/2-07. Start with welding not before annular plates are completely welded. The bottom plates will be lapped welded with min. 2 layers. The joining by welding will be carried out always from inside to outside, equal it is a longitudinal or a transverse weld seam. The sequence of welding is as follow (attachment 2): a) Start welding the transverse joint in the centre and thereafter the next weld joint on both sides in the same row (A1, A2, A3) b) The next row will be welded in the same sequence, till all transverse joints are completely welded (B1 B2, up to H1 H2 H3 H4 H5). c) The longitudinal weld joints shall be welded from the centre outwards on both sides of the centre row (attachment 3). Leave the fourth longitudinal weld joint each side of the centre to act as a closing seam. Do not tack these seams. d) The connection between the annular plates and the bottom plates shall not be tack welded, only wedged. (Welding the connection between the annular plates and bottom plates see para. 4) e) At least weld closing seams of the bottom from centre to outside (attachment 4)




4.0


Issue 1


Page 4 of 13

Outer Shell For erection see drawing no. T-0661/2-08 Start with erection of the outer shell, when annular plates are completely welded and all necessary NDE-work is carried out. All weld seams are single-Vee-groove or double-Vee-groove welds. The sequence is as follow: a) Install first course outer shell and weld all vertical joints (except door plate). b) Thereafter fit up the second course and weld all vertical joints. c) Weld horizontal joint course 1 to course 2. d) Weld shell plates course 1 to annular plates inside and outside. e) After the weld seam shell course 1 to annular plates is completed, start with welding the joint bottom to annular plates. If possible, start at least on four places (attachment 4). f) Fit up third shell course and weld vertical weld seams. Thereafter weld the horizontal weld seam course 3 to course 2. In this way fit up and weld all plates up to shell course 12.

5.0

Inner Shell For erection see drawing no. T-0661/2-14 Start with erection of the inner shell, when annular plates are completely welded and all necessary NDE-work is carried out. All weld seams are single-Vee-groove or double-Vee-groove welds. The sequence of welding is as follow: a) Install first course inner shell and fit vertical joints. b) Weld vertical joints (except door plate). c) Thereafter fit up the second course and weld vertical joints. d) Weld horizontal joint course 1 course 2 e) Weld shell plates course 1 to annular plates inside and outside. f) Fit up third shell course, weld vertical seams. Thereafter weld the horizontal seam course 3 to course 2. In this way weld all vertical and horizontal seams up to course 11.




6.0


Issue 1


Page 5 of 13

Inner Bottom For layout see drawing no. T-0661-/2-13. The bottom plates will be single-Vee-groove welded on back up bars. The sequence of welding is as follow (attachment 5): a) Start up with welding all back up bars before placing the inner bottom plates. b) Start welding the transverse joint in the centre and thereafter the next weld joint in the same row on both sides (A1 A2 A3). c) The next row will be welded in the same sequence till all transverse joints are completely welded, row by row from centre to outside (B1 B2 up to H1 H2 H3 H4). d) The longitudinal weld joints shall be welded from the centre outwards on both sides of the centre row (attachment 6). Leave the fourth longitudinal weld joint either side of the centre to act as a closing seam. Do not tack these seams. e) At least weld closing seams of the bottom from centre to outside (attachment 8) f) The connection between the annular plates and the bottom plates shall not be tacked, only wedged, will be welded after the bottom is completely welded. Start with welding the seam bottom to annular plate on at least four places. If it is necessary and possible, back step welding shall be used (attachment 7).

7.0

Remarks The welding supervisor shall observe the welding and may change the sequence of welding, if necessary.

PARS

ASALUYE


Petrochemical


NARGAN COMPANY

Linde Project No.: 2110 1055 Linde Job Code: Asaluye Linde Doc. No.:

NARGAN Project No.: NARGAN Job Code:

N-178

Company Owner Project No.: 3910 Owner Job Code.: PPC-RFP Owner Doc. No.: Page: 1 of 3

Installation Manual TP-000-16 attachment: Assembly Procedure of Erection Openings (Page 1 – 3)

10-TK-0661 and 10-TK-0662 P.O. No. 2DE466

Status

01 Issue

01.11.02 Date

Description

3 Pages

Tacke Prepared

D. Hensel Checked

Stelck Approved



attachment: Assembly Procedure of Erection Openings a d a p t Ref.: P 01-1021, Rev. 2


Issue 1


Page 2 of 3

1.0 Scope This procedure shall help to install the plates of the erection openings. The outer Shell shall not be out of permitted roundness. All cutting and welding shall be carried out under the responsibility of a supervisor (welding expert), who has good experience and knowledge. 2.0 Before start up with cutting, mark the correct position of the erection opening. 3.0 Transfer the stamp (material designation and Heat-No.) 4.0 Fix a horizontal beam above the opening with a radius of the outer shell (see drawing T-0661-22). 5.0 Cut off the plate with a small cutting nozzle, to be sure to get a small gap. The kerf should not be more than 3 mm. The edges shall be round. 6.0 Before fit up the plate, the joint preparation has to be carried out by grinding (Joint preparation for vertical and horizontal weld joints, see drawing T-0661-08). If the erection opening is in a round form, the weld joint preparation shall be as for vertical weld joints. 7.0 Welding Sequence 7.1 Rectangular Erection Opening 7.1.1 Fit up the plate, so that the gap of the vertical weld joints 1-2 mm and at the other side 3-4 mm. The gap of the horizontal weld joints shall be above and below equal. 7.1.2 All weld joints shall not be tack welded, only wedged. 7.1.3 Start with welding from outside, where the gap is 3-4 mm. The first pass shall be welded down (3G down), to reduce the shrinkage. Thereafter weld 2 or 3 passes vertical up (3G up). 7.1.4 Start with welding at the opposite side from outside, first pass down (3G down) and 2 or 3 passes vertical up (3G up). 7.1.5 Grinding shall be carried out from inside, before back welding vertical up. 7.1.6 Finish both vertical weld joints from inside and outside, before start up with welding the horizontal joints. 7.1.7 Tack the horizontal joints 7.1.8 Start with the lower horizontal weld joint, weld 2 or 3 passes from outside. 7.1.9 Weld 2 or 3 passes at the upper horizontal weld joint, grind this joint from inside before back welding.



attachment: Assembly Procedure of Erection Openings a d a p t Ref.: P 01-1021, Rev. 2


Issue 1


Page 3 of 3

7.1.10 Carry out the back welding of the lower horizontal weld joint after grinding. 7.2

Round Erection Opening

7.2.1

The weld joint preparation of the erection opening shall be the same as for the vertical weld joint of course 1.

7.2.2

Fit up the plate with equal gap all around and tack the plate.

7.2.3

Start with welding from the top to the bottom (3G down) at both sides.

7.2.4. Thereafter weld 3 or 4 passes vertical up (both sides), position 3G up. 7.2.5

Back welding shall be carried out after grinding from inside.

7.2.6

Finish welding from outside.

7.3

All welding shall be carried out by string beads.

7.4

The inter-pass temperature shall not exceed 150°C (302° F).

8.0

Non-Destructive-Testing

8.1

The root pass shall be examined by LP-Test or MP-Test after grinding of the back side and before back welding.

8.2

After finish welding, the following examinations shall be carried out:

8.2.1

After Hydrostatic Test, but before Pneumatic Test: - 100 % Visual Examination - 100 % Radiographic Examination

8.2.2

After Hydrostatic and Pneumatic Test: - 100 % Visual Examination - 100 % Vacuum Examination - 100 % Magnetic Particle Examination - 100 % Radiographic Examination

8.3

All NDE-Tests shall be reported and signed.

Tanks Installation Manual

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