PIP-006 Steam Tracing Piping Rev.00

5/26/2018 PIP-006 Steam Tracing Piping Rev.00

1/24

LSP COMPLEX PROJECT

Package A Olefins and Central Utility Plant

ITB Volume I Annex CRev.: 0

Long Son Petrochemicals Co., Ltd

Document No.: PIP- 006 Sheet:1 of 24

Confidential: This document is confidential and must not be copied or reproduced except with the express

permission of Long Son Petrochemicals Co., Ltd.

PROJECT TECHNICAL SPECIFICATION

PIP 006

STEAM TRACING PIPING

0 15/09/2009 ISSUE FOR LSP PROJECT HHM PCS

REV. DATE DESCRIPTION PREPARED CHECKED APPROVED


2/24

LSP COMPLEX PROJECT





TABLE OF CONTENTS

1. GENERAL ...............................................................................................3

1.1. Scope...................................................................................................................... 3

1.2. Codes and Standards ............................................................................................. 3

1.3. Related Engineering Specifications ........................................................................ 3

1.4. Conflict .................................................................................................................... 3

2.

BASIC DESIGN.......................................................................................4

2.1. General ................................................................................................................... 4

2.2. Materials.................................................................................................................. 4

2.3. Tracer Manifolds and Tracer Manifold Supplies ..................................................... 8

2.4. Tracer...................................................................................................................... 8

2.5. Condensate Pipes................................................................................................. 10

2.6. Supports................................................................................................................ 10


3/24

LSP COMPLEX PROJECT





1. GENERAL

1.1. Scope

1.1.1. This specification contains requirements for the design and materials of steam tracing to be

provided for the equipment, piping, in-line instrument in Olefins Plant.

1.1.2. This specification covers all items requiring steam tracing, such as process and utility piping,

in-line instrument and equipment as shown on the P & I Flow diagram (hereinafter referred

to as P & I) and Utility Flow Diagram (hereinafter referred to as UFD). However, steams

tracing piping to be supplied with the manufacturers proprietary or standardized equipment are

excluded in general.

1.2. Codes and Standards

Design, fabrication, inspection and tests of steam tracing piping materials and its accessories,

unless otherwise specified in this specification, shall be in accordance with the applicable codes

and standards.

1.3. Related Engineering Specifications

The related Engineering Specifications to supplement this specification are as follows:

Project specification of Piping Design Basis

Project specification of Piping Material for Olefins Plant

Project specification of Thermal Insulation Design

1.4. Conflict

If any conflicts exist, Contractor shall seek clarification from Owner before proceeding.

Generally, the most stringent requirements shall apply.


4/24

LSP COMPLEX PROJECT





2. BASIC DESIGN

2.1. General

2.1.1. Steam tracing shall be provided on all lines, equipment, instruments, where, under expected

ambient temperature, freezing, solidification, rise in viscosity or separation of fluid or

condensation of water in corrosive gas etc., would cause trouble in normal operations and

shut- down unless they are externally heated.

2.1.2. All items requiring steam tracing, such as equipment, in-line instruments and piping shall be as

shown on the applicable P & I and UFD by symbol.

2.1.3. Insulation thickness shall be in accordance with the Thermal Insulation Design Specification

based on the operation temperature of the line to be traced.

2.1.4. Typical steam tracing piping system is as shown in Figure 1 of Attached figures.

2.2. Materials

2.2.1. Pipes, Valves and Fittings

In general specifications of piping materials for steam tracing shall be the same as those

applicable to the steam mains. However, the tracer (including tracer supply and return) may be

connected with butt-weld and the branch of manifold fabricated with nozzle weld. Stainless steel

tubes may be used in accordance with the requirements of this specification.

2.2.2. Traps for steam Tracing System

Traps shall be the thermostatic type with strainer.

2.2.3. Fastening Materials

Fastening materials for the tracers shall be as follows:


5/24

LSP COMPLEX PROJECT





MATERIAL DIMENSION

Galvanized anneal steel wires S.W.G. #18

Galvanized steel bands 0.4 mm x 13 mm

304 Stainless steel wires S.W.G #18

304 Stainless steel bands 0.4 mm x 13 mm

Note: Stainless steel wires and bands shall be used forstainless steel piping and equipment.

2.2.4. Stainless Steel Tube

Stainless steel tube size shall generally be the inside diameter of 8mm and the outside

diameter of 10mm.

Stainless tube shall be soft annealed seamless tube of equal or higher grade than 304SS

specified in ASTM, "Stainless Steel Pipes".

All tube fittings shall be of bite type.


6/24

LSP COMPLEX PROJECT





Figure 1 Steam Tracing Piping System


7/24

LSP COMPLEX PROJECT





Figure 2 Tracer Insulated with Spacer

Figure 3 Tracer Expansion Loop

(1) Horizontal line

(2) Vertical line


8/24

LSP COMPLEX PROJECT





Figure 4 Standard locations of Tracers

2.3. Tracer Manifolds and Tracer Manifold Supplies

2.3.1. Tracer manifold shall be provided only where there are a minimum 3 tracer supplies

grouped within a 3 m radius, and its size shall generally be 2". Tracer supply other than stated

above shall be directly branched from the steam mains.

2.3.2. Block valves for tracer manifold supplies shall generally be installed at vicinity and horizontal

of the branch part of the steam mains.

2.3.3. Tracer manifold supply shall be branched from the top of steam main, and tracer supplies

branched from t he top or hori zontal of trac er manifold.

2.4. Tracer

2.4.1. Size of tracer shall generally be of 1/2 (NPS). The tracer of size 3/4 (NPS) may be applied for

large diameter piping and/or long distance piping such as interconnecting piping. Tube of

outside diameter 10 mm and inside diameter 8 mm may be used for traced line size 4 (NPS)

and smaller, equipment having irregular surface and in-line instrument.

Note: When tube tracers of outside diameter 10 mm are applied, the tracer supplies and

tracer returns shall be 1/2 (NPS). When tracers of 3/4 (NPS) are applied, the block valves and

their up - stream in the tracer supplies, and the condensate traps and their down-stream in the

tracer returns shall be 1/2 (NPS).

2.4.2. The minimum number of parallel steam tracers for each tracer size shall be as shown in Attached

Table 1.


9/24

LSP COMPLEX PROJECT





2.4.3. The maximum allowable length of tracer (total length from tracer supplyline to condensate trap)by LS1 or MS2 are respectively as follows:

MAXIMUM ALLOWABLE LENGTH (M)TRACER SIZE

LS1 MS2

Tube 10/8 60 60

Pipe 1/2 (NPS) 60 100

Pipe 3/4 (NPS) 70 120

2.4.4. The pocket height of tracers shall not exceed 2 m for LS1 steam and 7m MS2 steam.

2.4.5. Tracers need not have drains even if there should be any pocket.

2.4.6. Each tracer line shall generally have its own steam supply valve and condensate trap.

Where the tracers have no pocket and possibility of gravity flow of condensate from all

connected tracer condensate lines (including horizontal piping) is assured, more than 2

tracers may be connected with one trap. In this case, each tracer shall have equivalent lengthand the sum of tracer length shall not exceed the allowable length specified in Paragraph

2.4.2.

2.4.7. Sampling connections, drains, vents, and in-line instruments, such as pressure gauge etc.,

attached to piping or equipment shall generally be traced with the tracer for the piping or

equipment.

2.4.8. The safety valves shall be traced as close as possible to valve seat to avoid malfunction.

2.4.9. The tracer insulated with adequate spacer shall be applied for the following items. (Refer

to Figure 2 of Attached Figures)

Items to be protected from excessive heating, e.g. valves with non metallic seals, caustic

lines.

2.4.10. All tracers (including tracer supply and return) shall be extremely flattened.

2.4.11. Tracers shall be fixed with steel bands or steel wire at approximately 1 m intervals; however

such intervals shall be adequately shortened at the bent place where tracers are not

contacted sufficiently with the pipe.


10/24

LSP COMPLEX PROJECT





2.4.12. Expansion loops shall be provided at approx. 24 m intervals. Loops at pipe fittings, changes indirection, valves, and flanges shall serve as expansion loops. (Refer to Figure 3 of Attached

Figures)

2.4.13. The standard locations of tracers are shown in Figure 4 of Attached Figures.

2.5. Condensate Pipes

2.5.1. If condensate is recovered, a block valve shall be installed in each outlet line of the condensate

trap.

2.5.2. Where condensate is recovered, the condensate manifold shall be, in general, provided only

where there are a minimum 3 condensate or return lines grouped within a 3 meter radius and its

size shall generally be 2(NPS).

2.5.3. In case of condensate, the condensate shall be discharged to the sewer where the

condensate discharge does not give hazard for personnel and not make corrosive

environment for piping and steel structure.

2.6. Supports

All pipes including tracer supplies and returns shall be adequately supported in the field.


11/24

LSP COMPLEX PROJECT





Table 1: Minimum numbers of tracers

Trace size 10 mm

S S S

1 S S S

1 S S S

2 S S S

2 S S S

3 S S S

4 D S S

5 D S S

6 D S S

8 D S S

10 S S

12 D S

14 D D

16 D D

18 D D

20 D D

22 D D

24 T D

26 T D

28 T D

Pipe

size

(In

ch)

30 T T

Note:

1. S: Single


12/24

LSP COMPLEX PROJECT





2. D: Double

3. T: Triple

4. Steam (LSI): 147oC

5. Fluid Temperature: 50oC

6. Maintained Temperature: 50oC


13/24

LSP COMPLEX PROJECT






Trace size 10 mm

S S S

1 S S S

1 S S S

2 S S S

2 S S S

3 S S S

4 D S S

5 D S S

6 D S S

8 D S S

10 D S S

12 D S

14 D S

16 D D

18 D D

20 D D

22 D D

24 D D

26 T D

28 T D

Pipe

size

(In

ch)

30 T D

Note:

1. S: Single


14/24

LSP COMPLEX PROJECT





2. D: Double

3. T: Triple


5. Fluid Temperature: 50oC T 100

oC



15/24

LSP COMPLEX PROJECT






Trace size 10 mm

D S S

1 D S S

1 D S S

2 S S

2 D S

3 D D

4 D D

5 D D

6 D D

8 T D

10 T T

12 T

14 T

16

18

20

22

24

26

28

Pipe

size

(In

ch)

30

Note:

1. S: Single


16/24

LSP COMPLEX PROJECT





2. D: Double

3. T: Triple


5. Fluid Temperature: T 50oC



17/24

LSP COMPLEX PROJECT






Trace size 10 mm

D S S

1 D S S

1 D S S

2 S S

2 D S

3 D D

4 D D

5 D D

6 D D

8 T D

10 T D

12 T T

14 T

16 T

18

20

22

24

26

28

Pipe

size

(In

ch)

30

Note:

1. S: Single


18/24

LSP COMPLEX PROJECT





2. D: Double

3. T: Triple



oC (CKB, QOD)



19/24

LSP COMPLEX PROJECT






Trace size 10 mm

S S S

1 S S S

1 D S S

2 D S S

2 D S S

3 D S S

4 D S S

5 D S S

6 D S

8 D S

10 D D

12 D D

14 D D

16 T D

18 T D

20 T T

22 T T

24 T T

26 T

28 T

Pipe

size

(In

ch)

30 T

Note:

1. S: Single


20/24

LSP COMPLEX PROJECT





2. D: Double

3. T: Triple

4. Steam (MS 2): 191oC


oC



21/24

LSP COMPLEX PROJECT






Trace size 10 mm

D S S

1 D S S

1 D S S

2 D S S

2 D S S

3 D S S

4 D S S

5 S S

6 D S

8 D D

10 D D

12 D D

14 D D

16 T D

18 T D

20 T T

22 T T

24 T

26 T

28 T

Pipe

size

(In

ch)

30

Note:

1. S: Single


22/24

LSP COMPLEX PROJECT





2. D: Double

3. T: Triple



oC



23/24

LSP COMPLEX PROJECT






Trace size 10 mm

D S S

1 D S S

1 D S S

2 D S S

2 D S S

3 D S S

4 D S S

5 D S

6 D S

8 D D

10 D D

12 D D

14 D D

16 D D

18 T D

20 T D

22 T T

24 T T

26 T

28 T

Pipe

size

(In

ch)

30

Note:

1. S: Single


24/24

LSP COMPLEX PROJECT





2. D: Double

3. T: Triple



oC


Documents

PIP-006 Steam Tracing Piping Rev.00