sliding steel saddle supports for horizontal vessels

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ENGINEERING STANDARD

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Steel Saddle Supports for Horizontal Vessels

This document is issued by Engineering Standards Group, SABIC Engineering & Project Management, Kingdom of Saudi Arabia.

All information contained in this document is the confidential property of SABIC. It can not be disclosed, copied or used for any purpose

without prior approval from SABIC. If you are not authorized to posses this document, please destroy it immediately.

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CONTENTS

1. SCOPE ............................................................................................................. 3

2. REFERENCES 3

3. REQUIREMENTS 3

FIGURE

1 Saddle Support Details .................................................................................... 4

1A. Vessels under 1220 mm (4’-0”) Dia. 4

1B. Vessels 1220 to 2440 mm (4’-0” to 8’-0”) Dia. 4

1C. Vessels over 2440 to 3660 mm (8’-0” to 12’-0”) Dia. ........................... 4

2 Fixed Support, Elevation 5

3 Sliding (Movable) Support, Elevation 5

4 Sliding Support Details ..................................................................................... 6

5 Slide Bearing Assembly 6

6 Sliding Support Assembly 7

7 Slide Bearing Plate Assembly .......................................................................... 8

TABLE

I Support Dimensions 9

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1. Scope

1.1 This standard provides the requirements for the fabrication of steel saddle supports for horizontal vessels.

1.2 PIP VEFV 1105, VEFV 1106, SES Q01-E01 and Q01-F07 are part of this standard.

2. References

Reference is made in this standard to the following documents. The latest issues, amendments, and supplements to

these documents shall apply unless otherwise indicated.

SABIC Engineering Standards (SES)

B50-F01-17 Building and Equipment Grounding - Foundation Details

Q01-E01 Pressure Vessels - General

Q01-F07 Pressure Vessels - Fabrication

Process Industry Practices (PIP)

VEFV 1104 Vessel: Horizontal, Thin Wall Saddle Supports

VEFV 1105 Vessel: Horizontal, Saddles Supported on Concrete

VEFV 1106 Vessel: Horizontal, Saddles Supported on Structural Steel

3. Requirements

3.1 Material of construction shall be as specified on vessel data sheets.

3.2 Vessel manufacturer shall be responsible for the design and supply of saddles and Teflon sheet.

3.3 Sliding saddles shall be clearly marked and shall have slotted anchor bolt holes.

3.4 Thin walled vessels shall conform to PIP VEFV 1104.

3.5 In case of any conflict in dimensions, more stringent value shall dominate.

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FIGURE 1

Saddle Support Details

Figure 1A Figure 1B

Vessels under 1220 mm (4’-0”) Dia. Vessels 1220 to 2440 mm (4’-0” to 8’-0”) Dia.

Figure 1C

Vessels over 2440 to 3660 mm (8’-0” to 12’-0”) Dia.

Notes:

1. All measurements shall be in millimeters. Imperial units are for reference only.

2. All stiffeners are equally spaced. Thicknesses of all support plates shall be the same and shall be as per Table I , column

‘Bedplate’. The thickness of wearing plate or curved saddle plate shall be checked as shell reinforcement.

3. When loose saddles are used for cold temperature service or where incompatibility of materials does not permit welding the

vessel to the saddle, a wearing plate shall be required to prevent wearing of the vessel shell. The wearing plate should be

continuously fillet welded to the vessel by the fabricator and shall extend 0.1 r [not less than 50 mm (2 in)] beyond the

saddle-bearing surface. In cold temperature service, the insulation material between the steel saddle and the wearing plate

shall be 35 kg ready-to-lay roofing felt. Thickness shall be provided by the design engineer.

4. Pressure under fully supported bottom plate shall not exceed 8,800 kPa on concrete pier or footing. No bearing check is

required when supported on steel.

5. Actual load (not allowable saddle load) shall be used for foundation design.

6. When saddle is welded to vessel, omit wearing plate and extend curved saddle plate if required by design calculations.

Teflon, if required under sliding plate, shall be as per Figure 6.

7. This design is based upon a fully supported bottom saddle plate. If not fully supported, for example weigh cells, special

design should be required.

8. Welded plates in Notes 3 and 6 shall be provided with 6 mm ( 1 /4

in) tell tale hole at lowest point and filled with grease after

hydrotest, but before shipment.

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FIGURE 2

Fixed Support, Elevation

FIGURE 3

Sliding (Movable) Support, Elevation

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FIGURE 4

Sliding Support Details

FIGURE 5

Slide Bearing Assembly

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FIGURE 6

Sliding Support Assembly

Notes:

1. Slide bearing assemblies, 2 pieces, shall consist of 3.6 (10 gauge) plate with 2.4 mm ( 3 /32

in) Teflon filled TFE

fluorocarbon resin sheet, factory applied. Use fluorogold as manufactured by Fluorocarbon Co. or approved equal.

See Figure 7, Section B-B.

2. Slide bearing assemblies shall be continuously seal welded to vessel saddle and bedplate. Weld intermittently to

reduce heat concentration. Teflon on each slide bearing assembly shall be recessed 6 mm ( 1 /4

in) on all 4 sides.

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FIGURE 7

Slide Bearing Plate Assembly

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Document Outline

FIGURE 1

Saddle Support Details


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TABLE I

Support Dimensions

Notes:

1. For electrical grounding see SES B50-F01-17.

2. If more than two piers are required, only one shall be anchored.

3. Check pier and foundation for horizontal sliding load (width of pier, reinforcing, anchor bolts, etc). Assume the

coefficient of friction for Teflon TFE fluorocarbon resin on Teflon to be 0.08.

4. Matching plate surfaces (vessel, saddle, bearing plate, and bedplate) shall be true and level to avoid overstressing

the Teflon. See Section X-X, Figure 6.

VESSEL

Diameter

mm (in)

B

mm (in)

F

Location of Anchor Bolts

(See Note 1)

L

Bedplate

mm(in)t

mm (in)

L’

Top Slide Bearing Plate

mm(in)

120q

150q

120q

150q

120q

150q

460 (1’-6”) 432 (1’-5”) 102 (0’-4”) 114 (0’-41

/2

”) 485 (1’-7”) 510 (1’-8”) 12 (1

/2

”) 405 (1’-4”) 430 (1’-5”)

610 (2’-0”) 508 (1’-8”) 165 (0’-61

/2

”) 190 (0’-71

/2

”) 610 (2’-0”) 660 (2’-2”) 12 (1

/2

”) 535 (1’-9”) 585 (1’-11”)

760 (2’-6”) 584 (1’-11”) 229 (0’-9”) 267 (0’-101

/2

”) 735 (2’-5”) 815 (2’-8”)1

/2

” (12) 660 (2’-2”) 735 (2’-5”)

915 (3’-0”) 660 (2’-2”) 292 (0’-111

/2

”) 343 (1’-11

/2

”) 865 (2’-10”) 965 (3’-2”) 12 (1

/2

”) 785 (2’-7”) 890 (2’-11”)

1065 (3’-6”) 737 (2’-5”) 356 (1’-2”) 419 (1’-41

/2

”) 990 (3’-3”) 1120 (3’-8”) 12 (1

/2

”) 915 (3’-0”) 1040 (3’-5”)

1220 (4’-0”) 813 (2’-8”) 381 (1’-3”) 432 (1’-5”) 1145 (3’-9”) 1245 (4’-1”) 12 (1

/2

”) 1070 (3’-6”) 1170 (3’-10”)

1370 (4’-6”) 889 (2’-11”) 444 (1’-51

/2

”) 508 (1’-8”) 1270 (4’-2”) 1395 (4’-7”) 12 (1

/2

”) 1195 (3’-11”) 1320 (4’-4”)

1525 (5’-0”) 965 (3’-2”) 508 (1’-8”) 584 (1’-11”) 1395 (4’-7”) 1550 (5’-1”) 12 (1

/2

”) 1320 (4’-4”) 1475 (4’-10”)

1675 (5’-6”) 1041 (3’-5”) 571 (1’-101

/2

”) 660 (2’-2”) 1525 (5’-0”) 1700 (5’-7”) 12 (1

/2

”) 1450 (4’-9”) 1625 (5’-4”)

1830 (6’-0”) 1118 (3’-8”) 648 (2’-11

/2

”) 737 (2’-5”) 1675 (5’-6”) 1855 (6’-1”) 12 (1

/2

”) 1600 (5’-3”) 1780 (5’-10”)

1980 (6’-6”) 1194 (3’-11”) 711 (2’-4”) 800 (2’-71

/2

”) 1830 (6’-0”) 2005 (6’-7”) 20 (3

/4

”) 1725 (5’-8”) 1905 (6’-3”)

2135 (7’-0”) 1270 (4’-2”) 775 (2’-61

/2

”) 876 (2’-101

/2

”) 1955 (6’-5”) 2160 (7’-1”) 20 (3

/4

”) 1855 (6’-1”) 2055 (6’-9”)

2285 (7’-6”) 1362 (4’-5”) 838 (2’-9”) 952 (3’-11

/2

”) 2085 (6’-10”) 2310 (7’-7”) 20 (3

/4

”) 1980 (6’-6”) 2210 (7’-3”)

2440 (8’-0”) 1422 (4’-8”) 902 (2’-111

/2

”) 1029 (3’-41

/2

”) 2210 (7’-3”) 2465 (8’-1”) 20 (3

/4

”) 2110 (6’-11”) 2360 (7’-9”)

2590 (8’-6”) 1499 (4’-11”) 965 (3’-2”) 1105 (3’-71

/2

”) 2335 (7’-8”) 2615 (8’-7”) 20 (3

/4

”) 2235 (7’-4”) 2515 (8’-3”)

2745 (9’-0”) 1575 (5’-2”) 1041 (3’-5”) 1168 (3’-10”) 2490 (8’-2”) 2745 (9’-0”) 20 (3

/4

”) 2390 (7’-10”) 2640 (8’-8”)

3050 (10’-0”) 1727 (5’-8”) 1168 (3’-10”) 1321 (4’-4”) 2745 (9’-0”) 3050 (10’-0”) 20 (3

/4

”) 2640 (8’-8”) 2945 (9’-8”)

3355 (11’-0”) 1880 (6’-2”) 1295 (4’-3”) 1473 (4’-10”) 2995 (9’-10”) 3355 (11’-0”) 20 (3

/4

”) 2895 (9’-6”) 3250 (10’-8”)

3660 (12’-0”) 2032 (6’-8”) 1435 (4’-81

/2

”) 1613 (5’-31

/2

”) 3275 (10’-9”) 3685 (12’-1”) 20 (3

/4

”) 3175 (10’-5”) 3530 (11’-7”)

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Figure 1A Figure 1B Vessels under 1220 mm (4�-0�) Dia. Vessels 1220 to 2440 mm (4�-0� to

8�-0�) Dia.

Figure 1C Vessels over 2440 to 3660 mm (8�-0� to 12�-0�) Dia.

FIGURE 2

Fixed Support, Elevation

FIGURE 3

Sliding (Movable) Support, ElevationFIGURE 4

Sliding Support Details

FIGURE 5

Slide Bearing Assembly

FIGURE 6

Sliding Support Assembly

FIGURE 7Slide Bearing Plate Assembly

TABLE I

Support Dimensions

















sliding steel saddle supports for horizontal vessels

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