sem 3036e rack piping

SAMSUNG ENGINEERING CO., LTD.

DESIGN MANUAL

SEM - 3036E

Piping Design Manual

RACK PIPING

REV. :

DATE :

5

1998. 9. 28

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

CONTENTS

Page

1. GENERAL

1.1 Purpose ------------------------------------------------------------------------------ 1

1.2 Application Scope -------------------------------------------------------------------- 1

1.3 Relevant Manuals --------------------------------------------------------------------- 1

2. PIPING DESIGN CRITERIA

2.1 Rack piping design criteria ----------------------------------------------------------- 1

2.2 General piping design criteria -------------------------------------------------------- 2

3. RACK ARRANGEMENT

3.1 Items to be considered --------------------------------------------------------------- 3

3.2 Typical Layout ----------------------------------------------------------------------- 3

4. RACK HEIGHT ------------------------------------------------------------------------------- 5

5. PIPING ARRANGEMENT AND DECISION ON THE RACK WIDTH

5.1 Piping Arrangement ------------------------------------------------------------------- 7

5.2 Rack Width -------------------------------------------------------------------------- 15

6. LOADING DATA

6.1 Type of Load ------------------------------------------------------------------------ 16

6.2 Calculation Method ------------------------------------------------------------------ 17

6.3 Layout Aids for Piperack ------------------------------------------------------------ 18

6.4 Weight Table for Thermal Insulation (for reference) --------------------------------- 21

7. EXPANSION LOOPS ------------------------------------------------------------------------ 28

8. RACK STRUCTURE (FOR REFERENCE) ----------------------------------------------------------- 41

9. HISTORY OF THIS MANUAL ------------------------------------------------------------------- 44

Appendix Ⅰ Sample of pipe rack loading data information drawing

Appendix Ⅱ Sample of calculation table for maximum bending stress, anchor force and friction

force

i i

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

1. GENERAL

1.1 Purpose

This manual provides Preconditions for standardization of forms, method of expression

and limitations of rack piping drawings which are to be designed/drafted by SECL.

1.2 Application Scope

This manual shall be applied to all jobs executed by SECL unless otherwise specially required

from vendor or licensor.

1.3 Relevant Manuals

(1) SES-H-101E "Piping Design"

(2) SEM-3002 "Requirements for Drafting Piping Drawing"

(3) SEM-3101 "Requirements for Drafting Plot Plan"

(4) SEM-3102 "Drafting of Piping Connection Drawing on Battery Limit"

(5) SEM-3104 "Drafting Key Plan"

(6) SEM-3106 "Preparation Piping Note"

(7) SEM-3112 "Decision Method on Drawing Number"

(8) SEM-3113 "Drafting of Plan Drawing"

2. PIPING DESIGN CRITERIA

2.1 Rack piping design criteria

The following piping shall be laid out on the pipe rack with 25% space for future piping.

2.1.1 Process Piping

2.1.2 Blow-down piping (flare piping)

(1) Steam and condensate piping

(2) Boiler feed water piping, potable water, process, water, demineralized water,

cooling water,... etc.

(3) Air (Plant and instrument) piping.

(4) Fuel oil, fuel gas, nitrogen piping

2.1.4 Instrument/electrical duct or cable tray

2.1.5 Catwalk

1 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

2.2 General Design Criteria

3. RACK ARRANGEMENT

Type Within the unit O.S.B.L

Rack (1) Process piping

1) Piping to connect equipment located

at 6m distance and over

2) Product piping to carry materials

from tower, heat exchanger, pump,

etc. to the storage area or other

unit and plant.

3) Raw materials or other supply

piping entered into the unit plant.

(2) Blow-down piping (flare piping)

(3) Instrument/electrical duct

(4) Utility piping

1) Steam and condensate piping

2) Gas, plant air and instrument air

piping

3) Boiler supply water, city water,

process water, demineralized water

piping, and cooling water piping

not buried

4) Fuel oil and gas piping

(5) Catway

(1) Process piping

1) Product incoming piping

2) Raw material piping

(2) Utility piping

1) Steam and condensate piping

2) Water piping

(*) Yard piping shall be above-ground

piping as far as space is available.

But rack piping is permissible if yard

piping is not available considering

the walkway and access.

Above-

ground

(1) Discharge piping and vibration piping

of reciprocating compressor

(2) Storage and in-out piping with dike

(3) Large size fluid piping

(1) In-out piping for raw material and

products

Trench (1) Cable duct for electric power

(2) Cooling water piping for pump

(3) Drain recovery piping

(4) Piping extended to the sump tank

Under-

ground

(1) Utility piping

1) Cooling water piping and oily

piping

2) Fire-fighting water piping

3) Water supply piping

2 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

Rack arrangement is generally subject to the location of process lines such as raw material piping

and products piping and the location of utility lines that enter and leave the unit boundary.

3.1 Items to be considered

(1) Installation and maintenance of equipment and transportation of equipment and materials.

(2) Piping between each unit shall be as short as possible.

(3) Length and number of rack shall be the minimum.

3.2 Typical Layout

(1) Dead end yard lines enter and (2) Straight through yard, line can

leave one end the rack. enter and leave both ends of the

rack.

(3) L-shaped yard lines can enter (4) T-shaped rack piping can enter

and leave north and east of and leave on three sides of the

the rack. rack.

3 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

(5) U-shaped yard lines can enter (6) Combination of I and T shaped

and leave all four sides of the rack.

rack.

(7) Complex rack piping arrangement for

a very large chemical plant.

4. RACK HEIGHT

4 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

(1) The height of top surface of the lowest rack beam shall be subject to the following:

(2) The following shall be considered in deciding the height "H".

1) Observance of minimum height of the following

2) Decisions shall be made after examining mutual relation between the equipments, and problems

on taking-in, operation and maintenance of equipment.

3) For the minimum height mentioned on above item No.1), consider the highest point of road

paving.

4) According to the road traffic act enforcement ordinance, all facilities such as a bridge,

signs above the road shall have min. 4.5m headroom from lowest point of the road.

5) When the equipment such as exchanger is located under the rack, its highest part shall be

the base of rack height after examining each exchanger as shown on the below.

5

Classification H1 Remarks

Maintenance area inside of B.L . 2500

Main road crossing at inside of B.L. 4500 Clearance for big vehicle : 3500

Main road crossing at outside of B.L.

(2nd class state road)4500 Road traffic act

Main road crossing at outside of B.L.

(1st class state road)6000 Road traffic act

Incoming railway 6700 Rail road act

(Unit : mm)

44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

(3) Double level rack

Difference of height (H) for each level of rack shall be 1000mm, 1500mm, 2000mm as the

standard.

The figures Ⅰ,Ⅱ and Ⅲ show the elbows connected fitting to fitting and the dimensions of

For exchanger with hot or cold

insulation, the clearance of

minimum 300mm shall be

provided from the outside of

insulation material.

If an angle is necessary, special

caution is required to avoid the

interference with the adjacent pipe.

Type "Ⅰ" Type "Ⅱ" Type "Ⅲ"

6 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

the height(h) are shown in the following table.

(Note) : H ≥ 2h

For elbow 90°, 45°and 30°→ Consider it as a long radius elbow and

calculate the height.

5. PIPING ARRANGEMENT AND THE RACK WIDTH

5.1 Piping Arrangement

(1) Large size pipes (14" and larger) shall be arranged close to the column in order to

decrease the bending moment of beam.

(2) The utility piping shall be laid on the middle of the rack If the rack has a

single level and these piping shall be laid on the upper level if the rack has two levels.

Piping in the rack shall be arranged according to the "Table of arrangement classification"

on the next page.

Nominal Pipe Size 24B 26B 28B 30B 32B 34B 36B 40B

Elbow Dimension 914.4 990.6 1066.8 1143.0 1219.2 1295.4 1371.4 1524.0

Type Ⅰ (90°) - - - - - - - -

Type Ⅱ (45°) 915 991 - - - - - -

Type Ⅲ (30°) 557 625 673 721 762 817 865 961

Nominal Pipe Size 6B 8B 10B 12B 14B 16B 18B 20B

Elbow Dimension 228.6 304.8 381.0 457.2 533.4 609.6 685.8 762.0

Type Ⅰ (90°) 458 610 762 916 - - - -

Type Ⅱ (45°) - - - 458 534 610 686 762

Type Ⅲ (30°) - - - - 337 385 433 479

(Unit : mm)

7 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

8 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

Table of arrangement classification

(Note) : ◎ Expansion loop may be required.

TypeUpper Rack Lower Rack

Side Center Side Center

PROCESS

Blow-down (Flare) piping ○

Raw material inlet piping (12B and over) ◎ ○

Raw material inlet piping (10B and under) ○ ○

Product discharge piping (12B and over) ◎ ○

Product discharge piping (10B and under) ○ ○

Overhead piping from tall tower or highlyelevated vessel ○ ○

Piping from tower and vessel to pumps orexchangers ○ ○

Pump discharge piping ○ ○

Corrosive piping ○ ○

Piping located between equipments on groundleved ○ ○

Vibration piping ○

UTILITY

High and low pressure steam piping ○

Condensate piping ○

Boiler feed water piping ○ ○ ○

Hose station piping (water, air, N₂, etc.) ○ ○

Plant air piping ○ ○

Cooling water header piping for pump ○

Fuel oil and gas piping ○ ○

Instrument air piping ○

DUCT

Instrument duct ○ ○

Electric duct ○ ○

9 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

(3) The end of utility header piping shall be arranged as same as the following figures.

(Note) : (*) For the class of 900LB and over, the piping similar to the above types shall

be avoided.

(4) Piping with corrosive fluids shall not be installed above the cable duct.

(5) For reciprocating compressor discharge piping, pressure drop valve and drain piping to be

installed on the pipe rack, thorough consideration shall be given to the vibration

protection.

(6) Piping at B.L. connection point shall be arranged through sufficient coordibation with the

client and the relevant contractor, discussing the piping arrangement and the anchor

locations.

(7) Platform or walkway with ladder shall be installed on the rack where frequent operation

and/or maintenance of valves are required. A ladder hall be installed with a cage .

Class Blind flange Cap

(*) 300LB and under 8B and under 10B and larger

(*) 600LB and under 6B and under 8B and larger

Type

10 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

(8) When necessary to install an expansion loop on the condensate line, do it horizontally to

prevent water hammering. But, do as follows if horizontal loop is impossible.

(9) Loop of piping shall be grouped considering a fine view.

Make lines into a group and install a large size piping and high temperature piping to

the edge of the rack.

11 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

(10) Grounding is necessary on the piping where static electricity is expected to occur.

[Reference]

1) fluid that could be dangerous from static electricity.

┌ 1st Petroleum (crude oil, gasoline, solvent, naphtha, tar, light oil, etc.)

│

Petroleum ┼ 2nd Petroleum (kerosene, light oil, diesel oil, xylene, etc.)

│

└ 3rd Petroleum (heavy oil, lube oil, tars such as creosote oil)

Ether, carbon bisulfide, collodion, acetone, nitric acid ester, formic acid ester,

pyridine, chloro-benzol, animals and plants oils, etc.

2) About the electrification

Safety fluid velocity → 1m/sec and under for petroleum in API

Constant fluid velocity → proportional to pipe size

Constant pipe size → proportional to fluid velocity

(*) Pneumatic conveying piping for powders susceptible to the disaster due to static

electricity and non-conductive powders (synthetic resin, wheat powder, etc.).

3) Lug installation criteria

① Bonding between pipes

12

Insulated pipe

L=30+ Insulation thickness

Fabrication and attachment

of lug by piping contractorLug for bond

44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

② Bonding between valve and pipe

③ For piping on the rack, it is recommended to consider the rack column connected

to grounding main line at every 18m as same as the piping.

(11) Harzadous gas piping shall be installed on the upper rack and it shall be away from high

temperature piping.

(12) Install steel shoes on the hot-insulated piping (except for protector) and the cold-

insulated piping operating at over 0℃.

(13) Install support with cradle (rest type or whole circumference type) for cold-insulated

piping operating at 0℃ and under.

Sus Teminal

Sus Teminal

13

Farication and

attachment of lug

by piping contractor

same as bolt hole size

* Leave some space

to take out bolts

44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

(14) Install support with saddle for thin pipes or large size pipes (D/t > 95) to minimize

local stress. (But, as above support type is not necessary when the distance of rack

column is short, its application shall be determined after preliminary examination.)

(15) Changes in piping direction

(Used in O.S.B.L.) (Generally used within the unit.)

This type is economical. This type can be applied to the line

with complicated change of direction.

Care shall be taken for overhang in

the corner area.

(Proper middle beam or dummy supports

may be required.)

(16) Oxygen piping shall not be arranged adjacent to the electrical duct.

SADDLE

Plane bending 3-dimensional bending

14

SHOE CRADLE

44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

5.2 Rack Width

(1) Piping spacing on the rack shall be decided in accordance with "Drafting Data C-9

(SEM-3007)".

(Thorough consideration shall be given to the maintenance, hot insulation, cold insulation

and lateral movement by thermal expansion.)

(2) If special valve and instrument are installed on the rack, make decision on the width

considering the space of operation and maintenance.

(3) For the area where there are orifice piping, provide space for installing orifice

considering the orientation of differential pressure taps.

Instrument Hook-Up Drawing

(Note) : * Basically, do not use type "B-2" for superheated steam.

(It is to protect stress corrosion.)

* Type "B-1" and "C-1" shall be generally installed as the following figure.

15 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

(4) Leave 10-15% of space as a rule.

Also provide 20~30% of the space if future extension is expected.

(5) Rack width shall be decided as shown on the below.

B ≥ Bo + F

Bo = { (P1 + P2)) + CE } × (1 + F)

B : Rack width

Bo : Calculated rack width

P1, P2 : Pipe spacing (as per "Drafting Data C-9" in SEM-3007)

CE : Electric cable duct

α : 0.1 ~ 0.15

F : For future extension (α included)

6. LOADING DATE

6.1 Type of Load

Type Description Direction Remarks

Sustain

load(DeadWeight of piping, valve and load insulation Vertical

Thermal load

Load by thermal expansion of piping Horizontal

Reaction force by internal pressure of

expansion bellows.Horizontal

Dynamic loadLoad by vibration of piping

Load by wind and earthquake Horizontal

16 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

6.2 Calculation Method

(1) Weight calculation criteria of piping, valve and insulation

1) Liquid piping

a) Insulated and subject to hydrostatic pressure test

Load = piping weight + insulation weight + contents weight

b) Un-insulated and subject to hydrostatic pressure test

Load = piping weight + contents weight

c) Insulated and subject to pneumatic pressure test

Load = piping weight + insulation weight + contents weight

d) Un-insulated and subject to pneumatic pressure test

Load = piping weight + contents weight

2) Gas piping

a) Insulated and subject to hydrostatic pressure test

Load = piping weight + insulation weight + water weight

b) Un-insulated and subject to hydrostatic pressure test

Load = piping weight + water weight

c) Insulated and subject to pneumatic pressure test

Load = piping weight + insulation weight

d) Un-insulated and subject to pneumatic pressure test

Load = piping weight

Note : 1) For pipe and insulation weight, refer to weight table of paragraph 6.4.

2) For instrument duct and electric duct, refer to the following table.

Type Description Direction Remarks

Sustainedload

(Live load)

Liquid load for hydrostatic pressure test. Vertical Refer to lineschedule.

Snow load (The difference of snowfalldepending on the region shall be consideredin making decision)

Vertical

17 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

Instrumentation Design Manual "SEM-5001"

(*) Allowable span for duct is max. 6000mm.

6.3 Layout aids for piperack

(1) The stress limit on anchors and guides is 1410 kg/㎠ Max.

(2) Force limit on anchors and guides is 1000 kg Max. unbalanced force including friction

loads.

Example 1 :

Where Ft = Thermal force

Ft = Friction force

Total unbalanced force = (1600 + 1300) - (1300 + 1000)

= 700 kg

This is within the limiting criteria

Example 2 :

Total unbalanced force = (1900 + 1400) - (700 + 500)

= 2100 kg

Width (W) × Height (H) Weight (kg/m) Width (W) × Height (H) Weight (kg/m)

1500 × 500 515 600 × 300 150

1400 × 500 480 500 × 300 125

1200 × 400 350 400 × 200 75

1000 × 400 290 300 × 200 60

800 × 300 190

18 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

This exceeds the limiting criteria of 1000 kg unbalanced force.

Consult lead stress engineer for possible alternatives to comply with the force

limitation.

Notes : 1. For friction loads, we can manually calculate them getting the unit weights from

the table in para.6.4.

2. For thermal loads, we can manually calculate them using the data and nomographs.

But computer program is very well prepared and is it faster, accurate to use

computer for total unbalanced force at the anchor point.

(3) Expansion loop requirements

a) Generally, if the total expansion in any direction on the piperack is less than

100 mm, the loop could be avoided by locating an anchor in the middle of the run.

b) The total expansion between loop anchors should not exceed 350 mm.

c) The Max. expansion at the change of direction (i.e. points ⓐ and ⓑ in the example3)

should not exceed 50 mm, consult the lead stress engineer for any exceptions.

(4) Location of loops and guides

Example 3 :

Pipe material : ASTM A-53 Gr.B

Design temp. : 260 ℃

Exp. Coefficient : 3.02 mm/m

Commodity : HC (Vapor)

Insulation : 50 mm thick calsium silicate

(12.7 kg/m - from weight table)

Friction coefficient = 0.3 ( steel on steel)

a) Total expansion in the East - West direction.

150 × 3.02 = 453 mm

b) Anchor should be located in such a way that the expansion going into the loop should

not exceed 350 mm and the total unbalanced forces at the anchors should be within

19 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

the limiting criteria (para.6.3(2)). Locate anchor at 15 m from point ⓐ and ⓑ.

c) Expansion going into the loop

{138 - (2×15)} × 3.02 = 326 mm

d) Expansion loop can be sized manually using data and nomograph.

f) Anchor and guide loads can be calculated manually or by computer. calculating by

computer is more fast and accurate

For W = 1500 mm to 3000 mm, G ≥ 60000 mm

For W > 3000 mm, G ≥ 12000 mm

Fu = Total unbalanced force.

▲ To locate guides, follow the pipe guide spacing tabulated in

general note 1.6, selection guide of pipe supports (1/8).

△

△

▲ ▲

20 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

6.4 Weight Table for pipe and Thermal Insulation (for reference)

6.4.1 Calcium silicate hot-insulation (ρ = 0.22 g/㎤)

Nominalpipesize(B)

Outsidediameter(mm)

Internalpipewaterweight(kg/m)

Weight of hot-insulation by thickness (THK: mm, WT: kg/m)

25 30 50 65 75 90 115 140 150 175 200 225 250

1/2 21.7 - 0.8 1.1 2.5 3.9 5.0 6.9 10.9 15.6 17.8 23.8 30.6 38.4 46.9

3/4 27.2 - 0.9 1.2 2.7 4.1 5.3 7.3 11.3 16.2 18.4 24.5 31.4 39.2 47.9

1 34.0 0.6 1.0 1.3 2.9 4.4 5.7 7.7 11.8 16.8 19.1 25.3 32.3 40.3 49.1

1½ 48.6 1.4 1.3 1.6 3.4 5.1 6.4 8.6 13.0 18.3 20.6 27.0 34.4 42.5 51.6

2 60.5 2.2 1.5 1.9 3.8 5.6 7.0 9.4 13.9 19.4 21.8 28.5 36.0 44.4 53.7

2½ 76.3 3.6 1.8 2.2 4.4 6.3 7.8 10.3 15.2 20.9 23.5 30.4 38.2 46.9 56.4

3 89.1 5.1 2.0 2.5 4.8 6.9 8.5 11.1 16.2 22.2 24.8 31.9 40.0 48.8 58.6

4 114.3 8.7 2.4 3.0 5.7 8.1 9.8 12.7 18.2 24.6 27.4 35.0 43.4 52.8 62.9

6 165.2 18.9 3.3 4.0 7.4 10.3 12.5 15.9 22.3 29.5 32.7 41.1 50.5 60.7 71.7

8 216.2 32.9 4.3 5.1 9.2 12.6 15.1 19.1 26.3 34.5 38.0 47.3 57.5 68.6 80.6

10 267.4 50.7 5.1 6.2 11.0 14.3 17.7 22.2 30.4 39.4 43.3 53.5 64.6 76.6 89.4

12 318.5 72.9 5.9 7.2 12.7 17.2 20.4 25.4 34.5 44.4 48.6 59.7 71.7 84.5 98.2

14 355.6 92.7 6.6 8.0 14.0 18.9 22.3 27.7 37.4 50.2 52.4 64.2 76.8 90.3 104.6

16 406.4 122.1 7.5 9.0 15.8 21.2 25.0 30.9 41.4 52.9 57.7 70.3 83.8 98.2 113.4

18 457.2 155.6 8.3 10.1 17.5 23.5 27.6 34.0 45.5 57.8 62.9 76.5 90.8 106.1 122.2

20 508.0 193.1 9.2 11.2 19.3 25.7 30.2 37.2 49.5 62.7 68.2 82.6 97.9 114.0 131.0

22 558.8 234.7 10.1 12.2 21.0 28.0 32.9 40.4 53.6 67.6 73.5 88.8 104.9 121.9 139.8

24 609.6 279.6 11.0 13.3 22.8 30.3 35.5 43.5 57.6 72.5 78.7 94.9 111.9 129.8 148.5

26 660.4 330.0 11.8 14.3 24.5 32.6 38.1 46.7 61.6 77.4 84.0 101.0 118.9 137.7 157.3

28 711.2 383.8 12.7 15.4 26.3 34.9 40.8 52.9 65.7 82.4 89.3 107.2 126.0 145.6 166.1

30 762.0 440.6 13.6 16.4 28.1 37.2 43.4 53.0 69.7 87.3 94.5 113.3 133.0 153.5 174.9

32 812.8 502.4 14.5 17.5 29.9 39.4 46.0 56.2 73.7 92.2 99.8 119.5 140.0 161.4 183.6

34 863.6 568.2 15.4 18.5 31.6 41.8 48.7 59.3 77.8 97.1 105.1 125.6 147.0 169.3 192.4

36 914.4 638.1 16.2 19.6 33.3 44.0 51.3 62.2 81.8 102.0 110.3 131.8 154.0 177.2 201.2

40 1016.0 782.8 18.0 21.7 36.8 48.6 56.6 68.8 89.9 111.9 120.9 144.1 168.1 193.0 218.7

42 1066.8 840.0 18.9 22.7 38.6 50.8 59.2 72.0 93.9 116.8 126.1 150.2 175.1 200.9 227.5

44 1117.6 944.7 19.7 23.8 40.3 53.1 61.8 75.1 98.0 121.7 131.4 156.3 182.1 208.8 236.3

48 1219.2 1125.0 21.5 25.9 43.9 57.7 67.1 81.4 106.0 131.5 141.9 168.6 196.2 224.6 253.9

54 1371.6 1426.0 24.1 29.1 49.1 64.5 75.0 90.9 118.2 146.3 157.7 187.1 217.2 248.3 280.2

60 1524.0 1763.0 26.8 32.2 54.4 71.4 82.9 100.4 130.3 161.0 173.5 205.5 238.3 272.0 306.5

21 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

6.4.2 Perlite hot-insulation (ρ = 0.20 g/㎤)

Nominalpipesize(B)

Outsidediameter(mm)


Weight of hot-insulation by thickness (THK: mm, WT: kg/m)

25 30 50 65 75 90 115 140 150 175 200 225 250

1/2 21.7 - 0.7 1.0 2.3 3.5 4.6 6.3 9.9 14.2 16.2 21.6 27.9 34.9 42.7

3/4 27.2 - 0.8 1.1 2.4 3.8 4.8 6.6 10.3 14.7 16.7 22.2 28.6 35.7 43.5

1 34.0 0.6 0.9 1.2 2.6 4.0 5.1 7.0 10.8 15.3 17.3 23.0 29.4 36.6 44.6

1½ 48.6 1.4 1.2 1.5 3.1 4.6 5.8 7.8 11.8 16.6 18.7 24.6 31.2 38.7 46.9

2 60.5 2.2 1.3 1.7 3.5 5.1 6.4 8.5 12.7 17.6 19.8 25.9 32.7 40.4 48.8

2½ 76.3 3.6 1.6 2.0 4.0 5.8 7.1 9.4 13.8 19.0 21.3 27.6 34.7 42.6 51.3

3 89.1 5.1 1.8 2.3 4.4 6.3 7.7 10.2 14.7 20.2 22.6 29.0 36.5 44.4 53.4

4 114.3 8.7 2.2 2.7 5.2 7.3 8.9 11.6 16.6 22.4 24.9 31.8 39.5 48.0 57.2

6 165.2 18.9 3.0 3.7 6.8 9.4 11.3 14.4 20.2 26.8 29.7 37.4 45.9 55.2 65.2

8 216.2 32.9 3.8 4.6 8.4 11.5 13.7 17.3 23.9 31.3 34.5 43.0 52.3 62.4 73.2

10 267.4 50.7 4.6 5.6 10.0 13.6 16.1 20.2 27.6 35.8 39.3 48.6 58.7 69.6 81.3

12 318.5 72.9 5.4 6.6 11.6 15.7 18.5 23.1 31.3 40.3 44.2 54.3 65.2 76.8 89.3

14 355.6 92.7 6.0 7.3 12.7 17.2 20.3 25.2 34.0 43.6 47.7 58.3 69.8 82.1 95.1

16 406.4 122.1 6.8 8.2 14.3 19.3 22.7 28.1 37.7 48.1 52.4 63.9 76.2 89.3 103.1

18 457.2 155.6 7.6 9.2 15.9 21.3 25.1 30.9 41.3 52.5 57.2 69.5 82.6 96.4 111.1

20 508.0 193.1 8.4 10.1 17.5 23.4 27.5 33.8 45.0 57.0 62.0 75.1 89.0 103.6 119.1

22 558.8 234.7 9.2 11.1 19.1 25.5 30.0 36.7 48.7 61.5 66.8 80.7 95.4 110.8 127.0

24 609.6 279.6 10.0 12.1 20.7 27.6 32.3 39.6 52.4 65.9 71.6 86.3 101.7 118.0 136.6

26 660.4 330.0 10.8 13.0 22.3 29.6 34.7 42.4 56.0 70.4 76.4 91.9 108.1 125.2 143.0

28 711.2 383.8 11.6 14.0 23.9 31.7 37.0 45.3 59.7 74.9 81.2 97.4 118.3 132.4 151.0

30 762.0 440.6 12.4 14.9 25.5 33.8 39.4 48.2 63.4 79.3 86.0 103.0 120.9 139.5 159.0

32 812.8 502.4 13.2 15.9 27.1 35.8 41.8 51.1 67.0 83.8 90.7 108.6 127.3 146.7 166.9

34 863.6 568.2 14.0 16.8 28.7 37.9 44.2 53.9 70.7 88.3 95.5 114.2 133.7 153.9 174.9

36 914.4 638.1 14.8 17.8 30.3 40.0 46.6 56.8 74.4 92.7 100.3 119.8 140.0 161.1 182.9

40 1016.0 782.8 16.4 19.7 33.5 44.1 51.4 62.5 81.7 101.7 109.9 131.0 152.8 175.4 198.9

42 1066.8 840.0 17.1 20.7 35.1 46.2 53.8 65.4 85.4 106.2 114.7 136.5 159.2 182.6 206.8

44 1117.6 944.7 17.9 21.6 36.7 47.9 56.2 68.3 88.3 110.6 119.5 142.1 165.6 189.8 214.8

48 1219.2 1125.0 19.5 23.5 39.9 52.4 61.0 74.0 96.4 119.6 129.0 153.3 178.3 204.2 230.8

54 1371.6 1426.0 21.9 26.4 44.7 58.7 68.2 82.7 107.6 133.0 143.4 170.1 197.5 225.7 254.7

60 1524.0 1763.0 24.3 29.3 49.4 64.9 75.4 91.3 118.4 146.4 157.8 186.8 216.6 247.3 278.7

22 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

6.4.3 Urethane foam cold-insulation (ρ = 0.035 g/㎤)

Nominalpipesize(B)

Outsidediameter(mm)


Weight of cold-insulation by thickness (THK: mm, WT: kg/m)

25 30 40 50 65 75 90 115 140 150 175 200 225 250

1/2 21.7 - 0.1 0.2 0.3 0.4 0.6 0.8 1.1 1.7 2.5 2.8 3.8 4.9 6.1 7.5

3/4 27.2 - 0.1 0.2 0.3 0.4 0.7 0.8 1.2 1.8 2.6 2.9 3.9 5.0 6.2 7.6

1 34.0 0.6 0.2 0.2 0.3 0.5 0.7 0.9 1.2 1.9 2.7 3.0 4.0 5.1 6.4 7.8

1½ 48.6 1.4 0.2 0.3 0.4 0.5 0.8 1.0 1.4 2.1 2.9 3.3 4.3 5.5 6.8 8.2

2 60.5 2.2 0.2 0.3 0.4 0.6 0.9 1.1 1.5 2.2 3.1 3.5 4.5 5.7 7.1 8.5

2½ 76.3 3.6 0.3 0.4 0.5 0.7 1.0 1.2 1.6 2.4 3.3 3.7 4.8 6.1 7.5 9.0

3 89.1 5.1 0.3 0.4 0.6 0.8 1.1 1.4 1.8 2.6 3.5 3.9 5.1 6.4 7.8 9.3

4 114.3 8.7 0.4 0.5 0.7 0.9 1.3 1.6 2.0 2.9 3.9 4.4 5.6 6.9 8.4 10.0

6 165.2 18.9 0.5 0.6 0.9 1.2 1.6 2.0 2.5 3.5 4.7 5.2 6.5 8.0 9.7 11.4

8 216.2 32.9 0.7 0.8 1.1 1.5 2.0 2.4 3.0 4.2 5.5 6.0 7.5 9.1 10.9 12.8

10 267.4 50.7 0.8 1.0 1.4 1.8 2.3 2.8 3.5 4.8 6.3 6.9 8.5 10.3 12.2 14.2

12 318.5 72.9 0.9 1.1 1.6 2.0 2.7 3.2 4.0 5.5 7.1 7.7 9.5 11.4 13.4 15.6

14 355.6 92.7 1.0 1.3 1.7 2.2 3.0 3.5 4.4 6.0 8.0 8.3 10.2 12.2 14.4 16.6

16 406.4 122.1 1.2 1.4 2.0 2.5 3.4 4.0 4.9 6.6 8.4 9.2 11.2 13.3 15.6 18.0

18 457.2 155.6 1.3 1.6 2.2 2.8 3.7 4.4 5.4 7.2 9.2 10.0 12.1 14.4 16.9 19.4

20 508.0 193.1 1.5 1.8 2.4 3.1 4.1 4.8 5.9 7.9 10.0 10.9 13.1 15.6 18.1 20.8

22 558.8 234.7 1.6 1.9 2.6 3.3 4.5 5.2 6.4 8.5 10.8 11.7 14.1 16.7 19.4 22.2

24 609.6 279.6 1.8 2.1 2.9 3.6 4.8 5.6 6.9 9.2 11.5 12.5 15.1 17.8 20.7 23.6

26 660.4 330.0 1.9 2.3 3.1 3.9 5.2 6.1 7.4 9.8 12.3 13.4 16.1 18.9 21.9 25.0

28 711.2 383.8 2.0 2.5 3.3 4.2 5.6 6.5 8.4 10.5 13.1 14.2 17.1 20.0 23.2 26.4

30 762.0 440.6 2.2 2.6 3.5 4.5 5.9 6.9 8.4 11.1 13.9 15.0 18.0 21.2 24.4 27.8

32 812.8 502.4 2.3 2.8 3.8 4.8 6.3 7.3 8.9 11.7 14.7 15.9 19.0 22.3 25.7 29.2

34 863.6 568.2 2.5 2.9 4.2 5.0 6.7 7.7 9.4 12.4 15.4 16.7 20.0 23.4 26.9 30.6

36 914.4 638.1 2.6 3.1 4.2 5.3 7.0 8.2 9.9 13.0 16.2 17.5 20.1 24.5 28.2 32.0

40 1016.0 782.8 2.9 3.5 4.6 5.9 7.7 9.0 10.9 14.3 17.8 19.2 22.9 26.7 30.7 34.8

42 1066.8 840.0 3.0 3.6 4.9 6.1 8.1 9.4 11.5 14.9 18.6 20.1 23.9 27.9 32.0 36.2

44 1117.6 944.7 3.1 3.8 5.1 6.4 8.4 9.8 11.9 15.6 19.4 20.9 24.9 29.0 33.2 37.6

48 1219.2 1125.0 3.4 4.1 5.5 7.0 9.2 10.7 13.0 16.8 20.9 22.6 26.8 31.2 35.7 40.4

54 1371.6 1426.0 3.8 4.6 6.2 7.8 10.3 11.9 14.5 18.8 23.3 25.1 29.8 34.6 39.5 44.6

60 1524.0 1763.0 4.3 5.1 6.9 8.7 11.4 13.2 16.0 20.7 25.6 27.6 32.7 37.9 43.3 47.8

23 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

6.4.4 Cellular glass cold-insulation (ρ = 0.16 g/㎤)

Nominalpipesize(B)

Outsidediameter(mm)


Weight of cold-insulation by thickness (THK: mm, WT: kg/m)

25 30 40 50 65 75 90 115 140 150 175 200 225

1/2 21.7 - 0.6 0.8 1.2 1.8 2.8 3.6 5.1 7.9 8.2 8.9 12.6 12.2 16.7

3/4 27.2 - 0.7 0.9 1.4 1.9 3.0 3.9 5.3 8.2 8.8 9.5 13.0 13.2 17.3

1 34.0 0.6 0.7 1.0 1.5 2.1 3.2 4.1 5.6 8.6 9.1 9.8 13.6 13.6 18.1

1½ 48.6 1.4 0.9 1.2 1.8 2.5 3.7 4.7 6.3 9.5 10.1 10.9 14.9 15.0 19.7

2 60.5 2.2 1.1 1.7 2.0 2.8 4.1 5.1 6.8 10.1 10.9 11.8 14.2 16.2 18.8

2½ 76.3 3.6 1.3 1.6 2.3 3.2 4.6 5.7 7.5 11.1 12.1 13.0 17.4 17.8 22.9

3 89.1 5.1 1.4 1.8 2.6 3.5 5.0 6.2 8.1 12.1 13.0 14.0 18.8 19.1 24.8

4 114.3 8.7 1.8 2.2 3.1 4.1 5.9 7.1 9.2 13.3 14.7 15.9 20.7 21.6 27.2

6 165.2 18.9 2.4 2.9 4.1 5.4 7.5 9.1 11.5 16.2 18.3 19.7 25.2 26.8 32.9

8 216.2 32.9 3.0 3.7 5.2 6.7 9.2 11.0 13.9 19.2 21.9 23.5 29.7 31.9 38.7

10 267.4 50.7 3.7 4.5 6.2 8.0 10.9 12.9 16.2 22.1 25.5 27.4 34.2 37.0 44.5

12 318.5 72.9 4.3 5.3 7.2 9.3 12.5 14.8 18.5 25.1 29.1 31.3 38.7 42.2 50.3

14 355.6 92.7 4.8 5.8 8.0 10.2 13.7 15.9 20.2 27.2 31.7 34.0 41.9 45.9 54.5

16 406.4 122.1 5.4 6.6 9.0 11.5 15.4 18.1 22.5 30.1 35.3 37.9 46.4 51.0 60.2

18 457.2 155.6 6.1 7.3 10.0 12.7 17.1 20.1 24.8 33.1 38.9 41.7 50.9 56.1 66.0

20 508.0 193.1 6.7 8.1 11.0 14.0 18.7 22.0 27.1 36.0 42.4 45.5 55.3 61.2 71.7

22 558.8 234.7 7.3 8.9 12.0 15.3 20.4 23.9 29.4 38.9 46.0 49.4 59.8 66.3 77.4

24 609.6 279.6 8.0 9.6 13.0 16.6 22.0 25.8 31.6 41.9 49.6 53.2 64.2 74.2 83.2

26 660.4 330.0 8.6 10.4 14.9 17.9 23.4 27.7 33.9 44.8 53.2 57.0 68.7 76.5 88.9

28 711.2 383.8 9.3 11.2 15.1 19.1 25.4 29.6 36.2 47.8 56.7 60.9 73.2 81.7 94.7

30 762.0 440.6 9.9 11.9 16.1 20.4 27.0 31.6 38.5 50.7 60.3 64.7 77.7 86.8 100.4

32 812.8 502.4 10.5 12.7 17.1 21.7 28.7 33.5 40.8 53.6 63.9 68.5 82.1 91.9 106.2

34 863.6 568.2 11.2 13.5 18.2 23.1 30.3 35.4 43.1 56.6 67.5 72.4 86.6 97.0 111.9

36 914.4 638.1 11.8 14.2 19.2 24.2 32.0 37.3 45.4 59.5 74.2 80.3 95.8 112.0 128.9

40 1016.0 782.8 13.1 15.8 21.2 26.8 35.3 41.1 50.0 65.4 81.3 87.9 104.8 122.2 140.4

42 1066.8 840.0 13.7 16.5 22.3 28.1 37.0 43.0 52.4 68.3 84.9 91.7 109.2 127.4 146.1

44 1117.6 944.7 14.4 17.3 23.3 29.3 38.6 45.0 54.6 71.3 88.5 95.6 113.7 132.5 151.8

48 1219.2 1125.0 15.6 18.8 25.3 31.9 42.0 48.8 59.2 77.1 95.6 103.2 122.6 142.7 164.3

54 1371.6 1426.0 17.6 21.1 28.4 35.7 46.9 54.5 66.1 85.9 106.4 114.7 136.0 158.0 180.6

60 1524.0 1763.0 19.5 23.4 31.4 39.6 51.9 60.3 73.0 94.7 117.8 127.0 149.5 174.3 197.8

24 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

6.4.5 Pipe weight

Normalpipesize

schedule wallthick.(mm)

weight(kg/m)

weightof water(kg/m)a b c

1/2"

--4080160-

--StdXs-XXS

5S10S40S80S--

1.652.112.773.734.757.47

0.8011.0001.2661.6191.9412.551

0.2540.2300.1960.1510.1100.032

3/4"

--4080160-

--StdXS-XXS

5S10S40S80S--

1.652.112.773.734.757.47

0.8011.0001.2661.6191.9412.551

0.2540.2300.1960.1510.1100.032

1"

--4080160-

--StdXs-XXS

5S10S40S80S--

1.652.112.873.915.547.82

1.0181.2751.6832.1942.8833.633

0.4290.3960.3420.2790.1910.095

1¼

--4080160-

--StdXS-XXS

5S10S40S80S--

1.652.773.384.556.359.09

1.2922.0892.4993.2324.2325.445

0.7110.6090.5570.4630.3360.182

1½

--4080160---

--StdXS-XXS--

5S10S40S80S----

1.652.773.685.087.1410.1613.3416.51

0.7400.7404.0455.4047.2319.53611.47412.915

0.6890.6551.3131.1390.9050.6130.3660.183

2"

--4080160---

--StdXS-XXS--

5S10S40S80S----

1.652.773.915.548.7111.0714.2717.45

2.3873.9265.4367.47411.07813.43716.19418.431

2.5542.3542.1651.9051.4451.1440.7930.507

2½"

--4080160---

--StdXS-XXS--

5S10S40S80S----

2.113.055.167.019.5314.0217.1520.32

3.6835.2558.62111.4011489720.38823.60726.384

3.7193.51430.892.7342.2841.5881.1790.825

Normalpipesize


weight(kg/m)


2½"

--4080160---

--StdXS-XXS--

5S10S40S80S----

2.113.055.167.019.5314.0217.1520.32

3.6835.2558.62111.4011489720.38823.60726.384

3.7193.51430.892.7342.2841.5881.1790.825

3"

--4080160---

--stdXS-XXS--

5S10S40S80S----

2.113.055.497.6211.1015.2418.4221.59

4.5096.44411.28015.25421.31127.65131.97735.801

5.6255.3724.7624.2623.4942.6802.1301.641

4"

---4080120-160---

---StdXS---XXS--

5S10S-40S80S------

2.113.054.786.028.5611.1012.7013.4917.1220.3223.50

5.8348.34912.73916.05822.29328.21631.78833.49940.98547.04652.560

9.5249.1828.6318.2007.4116.6676.1915.9835.0304.2623.558

6"

---4080120160---

---StdXS--XXS--

5S10S-40S80S-----

2.773.405.567.1110.9714.2718.2421.9525.4028.58

7.99213.82522.35328.23142.51854.15567.41579.11289.40498.345

20.80520.44819.49518.61716.80215.32813.63212.15910.8409.699

8"

---2030406080100120140160--

-----Std-XS------

5S10S---40S-80S------

2.773.765.566.357.048.1810.3112.7015.0618.2420.6223.0125.4028.58

14.74819.94229.22833.27636.75842.48853.03964.57375.70490.229100.840111.153121.194134.107

35.82135.10634.08033.45433.00832.27930.93929.46628.03726.19224.83823.51322.24120.594

a: ANSI B36.10 steel pipe schedule numbers

b: ANSI B36.10 steel pipe nominal wall thicknes designation

c: ANSI B36.10 stainless steel pipe schedule numbers.

25 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

6.4.5 Pipe weight (cont'd)

ormalpipesize


weight(kg/m)


10"

---2030406080100120-140160--

-----StdXS--------

5S10S---40S80S--------

3.404.195.566.357.809.2712.7015.0618.2421.4122.2325.4028.5831.7538.10

22.54627.82936.65441.72950.95660.24281.46395.735114.486132.746137.330154.965172.109188.732220.535

55.65854.91453.87253.27752.08750.74748.06946.28343.90241.66941.07438.84236.60934.52630.508

12"

--2030-40-6080-100-120140-160

----Std-XS---------

5S10S--40S-80S---------

3.964.576.358.389.5310.3112.7014.2717.4519.0521.4122.2325.4028.5831.75-

31.23736.01449.67665.13873.75579.66397.357108.876131.720143.164159.534165.040186.753207.870228.586-

78.42877.68376.04673.96372.92172.17769.94568.45765.48064014161.90961.16558.48655.80753.27751.938

14"

----10-20-3040--60-80100120140160

--------Std--XS-------

5S10S-----------------

3.964.785.335.566.357.147.928.749.5311.1011.9112.7015.0615.8819.0523.8027.7631.7535.71

34.22841.22345.98547.92054.63161.31367.98074.70781.21094.307100.899107.284126.362132.866157.941194.551224.225253.320281.446

94.79893.90593.45893.16192.41791.52490.63189.73888.84587.35786.31585.57183.19082.29779.17274.40970.68966.96963.397

Normalpipesize


weight(kg/m)


16"

--102030406080100120140160

----StdXS------

5S10S----------

4.194.786.357.929.5312.7016.6621.4126.1930.9436.5040.46

41.66947.62262.57877.92293.131123.177159.980203.078245.298286.164332.819364.770

124.264123.520121.734119.799117.716113.846109.233103.72798.36993.16187.20883.190

18"

--1020-30-406080100120140160

----Std-XS-------

5S10S------------

4.194.786.357.929.5311.1012.7014.2719.0523.8029.3634.9339.6745.24

46.13453.57570.52587.848105.051122.121139.071155.888205.623254.108309.484363.326408.106459.121

158.046157.302155.218152.986150.605148.670146.438144.354137.955131.705124.561117.865112.060105.661

20"

--1020304060-80100120140160

---StdXS--------

5S10S-----------

4.785.546.359.5312.7015.0620.6222.2326.1932.5438.1044.4549.99

59.52868.45778.472116.972154.965182.913247.635265.984310.838381.125441.055507.621564.039

194.953193.762192.720187.512182.750179.178171.142168.761162.808153.789146.289137.806130.812

22"

--102030--3080100120140160

---StdXS--------

5S10S-----------

4.785.546.359.5312.7015.8819.0522.2328.5834.9341.2847.6353.98

65.48075.89886.315129.472171.142212.811252.992293.173373.535450.921526.819599.740671.173

236.771235.431234.241228.735223.526218.169212.960207.751197.631187.809177.987168.612159.534

26 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

6.4.5 Pipe weight (cont'd)

Normalpipesize


weight(kg/m)


24"

1020-30-40---6080100120140160-10-20-----

-StdXS--------------StdXS-----

-------5S----------------

6.359.5312.7017.2715.8817.4519.055.5422.2324.5930.9438.8946.0252.3759.516.357.929.5312.7015.8819.0522.2325.4028.58

94.366140.812186.753209.537232.202254.733277.16081.850321.449354.353441.040546.761639.013718.990806.50999.709127.984153.283202.394251.504300.614349.724397.346444.969

279.780273.529268.023265.046262.219259.391256.564281.119250.909246.742235.580222.187210.430200.161189.000329.485326.211323.086316.687310.436304.186297.935291.834285.881

28"

-10-2030----

--StdXS-----

---------

6.357.929.5312.7015.8819.0522.2325.4028.58

110.126136.913165.189218.764272.339324.425376.512428.598480.685

382.911379.488375.917369.071362.225355.528348.831342.283335.735

30"

-10-203040---

--StdXS-----

5S10S-------

6.357.929.5312.7015.8819.0522.2325.4028.58

117.567147.331177.094235.134291.685348.236404.787461.339516.402

440.950437.081433.361425.920418.628411.633404.490397.346390.203

Normalpipesize


weight(kg/m)


32"

-10-203040----

--StdXS------

----------

6.357.929.5312.7015.8817.4819.0522.2325.4028.58

126.496157.748189.000250.016311.031342.283372.047433.063492.591552.118

502.710498.841494.823486.935479.048474.732471.309463.720455.981448.391

34"

-10-203040----

--StdXS------

----------

6.357.929.5312.7015.8817.4819.0522.2325.4028.58

133.937166.677200.906266.386331.866364.606395.585461.339525.331587.835

568.488564.470559.857551.820543.189538.873535.004526.968518.783510.746

36"

-10-203040---

--StdXS-----

---------

6.357.929.5312.7015.8819.0522.2325.4028.58

142.866177.094212.811282.756351.213419.669488.126556.583623.551

638.582634.117629.653620.724611.794603.163594.383585.751577.269

42"

-

-

20

30

40

-

-

-

-

Std

XS

-

-

-

-

-

-

-

-

-

-

-

-

-

6.35

9.53

12.70

15.88

19.05

25.40

31.75

38.10

166.677

248.528

330.3784

10.740

491.102

651.827

809.575

965.835

572.674

862.108

851.691

841.422

831.005

810.765

790.526

770.733

27 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

7. Expansion Loops

Loops designed according to these charts will be stressed to the allowable limit for A-53 Gr.B

seamless Pipe. or equal, with LR elbows of the same thicikness as straight pipe.

Do not use for weaker material, or extraploate beyond the range of the charts.

With long expansion lenghts and nested loops, investigate pipe movements.

If thrusts are critical, consult stress section.

The distance between the guides. "G" is a minimum.

If there is not sufficient room to accommodate the depth of loop shown on the chart, then some

relief can be found by widening the loop. This effect is small, and can only be counted on within

the following limits:

To reduce H by 0.3m, increase W by 3.6m

To reduce H by 0.6m, increase W by 7.2m

If W > 6m then G ≥ 2W

H always ≥ 1.5m, even after reduction.

No. reduction of H greatr than 0.6m is permitted.

i.e., No increase of W greater than 7.2m permitted.

If it is desirable from a layout point of view, W may always be safely increased without any

decrease on H, providing that:

W ≥ ½ anchor distance

G ≥ 2W

For loops in which there is a vertical offset:

No credit may be taken if the dimensiion V is a minimum-i.e. fitting to fitting.

If V consists partly of straight pipe, the flexibility of the loop will be increased, and the

amount of this increase shall be checked by stress engineer.

28 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

7.1 For 3" std wt to xxs inclusive

29 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5


30 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5


31 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5


32 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5


33 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5


34 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5


35 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5


36 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5


37 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5


38 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5


39 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5


40 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

8. RACK STRUCTURE (for reference)

(1) Allow sufficient rack width between columns. (Refer para.5)

(Reference example) Rack span by plant

(Unit : mm)

(2) For conditions of rack span, decision shall be made considering the following:

1) Mutual relation with plot of each machinery

2) Relation with pipe diameter

Decision on what the minimum pipe diameter of rack piping shall be and what the allowable

bending of the minimum pipe diameter shall be.

3) Relation with pipe weight

Fluid weight of pipe, pipe weight, valve weight and insulation weight.

4) Support for special piping

Relation with piping whose support span is short, such as copper, many kinds of plastic and

glass lining pipes.

5) Relation with deflection

If deflection of pipe is too great, drainage is not good, fluid which is in the slurry state

of high boiling point produces crystals and condensible vapor such as steam and dowtherm

vapor causes water hammering.

Type of plant Rack span

Urea plant (600∼2,000 T/Y) 6000

Pitch Coke Plant 6000

Ethylene plant (200,000∼300,000 T/Y) 10000

Methanol, Polybuthyl, Refinery 6000 ∼ 8000

41 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

(3) Basically, do not use assembled column for rack column.

(4) For rack column around structure or building, use columns of structure or building column

together if possible, and allow easy access from the ground.

(5) If necessary, rack shall be grounded.

(6) Rack column shall be fire proofed where necessary.

Construction method and range of fire proof shall be in accordance with the job specific

requirements.

(7) If rack is long (specially for O.S.B.L), provide one joint

bolt slot at the beam connection at every 50∼60m to absorb the thermal expansion

from temperature changes. And, do not joint the crossing rack each other.

(8) If there is expansion loop, or a lot of branch piping is expected to the unit on the rack,

indicate it on the structure planning drawing of the below form.

(9) Basically, ladders shall be installed at every 40∼60m of the rack considering the relation of

each area and cat way.

(10) Install bracing on the rack within the range that it does not interfere with pipe run,

operation and maintenance. (One bracing shall be installed at least every six span of racks.)

42 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

(11) Examples of rack structure

1) 1 level rack (there is also reinforced concrete.) : L = 6 m

2) 2 level

① Normal structure (number of beam is 2 : one on the upper and the other on the lower) :

L = 6 m

② When beam is one : L = 6 m

③ When beam is structured with truss : L = 10∼15m

(12) The maximum deflection of rack beam shall be generally 1/300 against 2 span.

43 44

DATE :

DESIGN MANUAL

RACK PIPING

SEM - 3036E

REV. :

1998. 9.28 PAGE OF

5

9. History of This Manual

Rev. Date Description

4 1996. 11. 15 (1) Progress of Enactment

This manual is enacted in accordance with Engineering Division

Strategic Plan, regarding the work of the rack piping.

(2) Written by : (Piping Engineering Team)

Koh Bong Hwan, Lee Joo Sang

Editorial Supervisor : Jeong Kyung Hwa

5 1998. 9. 28 (1) This manual is revised in accordance with piping design team

Strategic Plan of 1998, regarding the work of the rack piping.

(2) Piping engineerirng team

Written by : Mr. H.C. Chang, Lee joo sang

Reviewed by : Jeong kyung hwa

editorial Supervisor : Lee myung hak

44 44

Appendix Ⅰ: Sample of pipe rack loading data information drawing

Appendix Ⅱ: Sample of calculation table for maximum bending stress, anchor force and friction force

sem 3036e rack piping

Documents