Pipe Steam Tracing

OWNER REFERENCE

Project Package Originator Discipline Doc. Type Unit n Serial n

RAPID FE1 TPX PIP DES 0001 0003

PETRONAS RAPID PROJECT

FEED PHASE

CONTRACTOR REFERENCE Rev. Page

Project Unit n Doc. Type Doc. Code Sequent. n

1 1 / 1360987R 0001 JSD 1300 0003

Project Specification Piping Tracing

60

98

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1 04-Mar-13 IFD Issued Approved for Design J.Chanavat A.Rafin J.M. Maurice

0 25-Oct-12 IFD Issued Approved for Design J.Chanavat A.Rafin J.M. Maurice

A 30-Mar-12 IFA Issued for Approval A. Rafin J. Martin J.M. Maurice

REV.

DATE

DD-MMM-YY

STATUS REVISION MEMO

WRITTEN BY

(name & visa)

CHECKED BY

(name & visa)

APPROVED BY

(name & visa)

Sections changed in last revision are identified by a vertical line in the margin.

Subject to the provision of Article 13 of the CONTRACT, TECHNIP hereby grant PETRONAS the copyright of this document. No part of this document may be reproduced, stored in a retrieval

system or transmitted in any form or by any means (electronic, mechanical, photocopying, recording or otherwise) without the permission of the copyright owner.

CONFIDENTIAL Not to disclose without authorization

Electronic Filename: RAPID-FE1-TPX-PIP-DES-0001-0003_A.doc

PROJECT SPECIFICATION

PIPING STEAM TRACING

OWNER Approval: PETRONAS

Name:

Date (DD-MMM-YY):

Signature:

Document Class: Z

Pages modified under this revision: All

Jerome Chanavat

2013.03.04 17:41:36

+01'00'

Adrien Rafin

2013.03.04 17:44:33

+01'00'

Jean-Marc Maurice

2013.03.05

11:01:48 +01'00'

hsato4 RAPID-P0005-TYO-PIP-DES-2000-0003Attachment-1

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CONTENTS

1. PURPOSE ............................................................................................................................................................................ 3

2. REFERENCE DOCUMENTS ........................................................................................................................................... 3

3. ACRONYMS AND DEFINITIONS .................................................................................................................................. 3

4. CODES AND STANDARDS .............................................................................................................................................. 4

4.1 APPLICABLE CODES & STANDARDS .............................................................................................................................. 4

4.2 ORDER OF PRECEDENCE ................................................................................................................................................ 4

5. GENERAL PROCESS AND ENGINEERING REQUIREMENTS .............................................................................. 5

5.1 TYPE OF HEATING ......................................................................................................................................................... 5

5.2 STEAM SUPPLY ............................................................................................................................................................. 5

5.3 CONDENSATE RETURN .................................................................................................................................................. 5

5.4 LINES TO BE TRACED ..................................................................................................................................................... 5

5.5 TRACER FASTENING SYSTEM ......................................................................................................................................... 5

5.6 DESIGN PRINCIPLE......................................................................................................................................................... 6

6. INSTRUMENTS ............................................................................................................................................................... 10

7. DETAIL ENGINEERING AND DESIGN REQUIREMENTS .................................................................................... 10

7.1 PURPOSE ..................................................................................................................................................................... 10

7.2 GENERAL DESIGN ........................................................................................................................................................ 10

7.3 STEAM TRACER INSTALLATION ................................................................................................................................... 11

7.4 THERMAL EXPANSION ................................................................................................................................................. 11

7.5 INSTRUMENTS ............................................................................................................................................................. 11

7.6 SUPPORTING ................................................................................................................................................................ 11

8. STEAM TRACING DOSSIERS ...................................................................................................................................... 12

8.1 DRAWING REQUIREMENTS .......................................................................................................................................... 12

9. MATERIALS .................................................................................................................................................................... 13

10. FABRICATION ............................................................................................................................................................ 13

11. INSPECTION AND TESTING ................................................................................................................................... 13

11.1 CLEANING ................................................................................................................................................................... 13

11.2 INSPECTION ................................................................................................................................................................. 13

11.3 TESTING ...................................................................................................................................................................... 13

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1. PURPOSE

This Project Specification covers the minimum requirements for Piping Steam Tracing to be used

for the PETRONAS RAPID (Refinery And Petrochemical Integrated Development) Project.

These requirements shall be used throughout all steps of the Project and by all parties:

CONTRACTOR, SUBCONTRACTORS, EPCC CONTRACTORS, Suppliers, etc.

Electrical tracing is managed by RAPID-FE1-TPX-ELE-DES-0001-0022 Electrical Trace Heating.

2. REFERENCE DOCUMENTS

RAPID-FE1-TPX-PIP-DES-0001-9009 Project Specification Protective Steam Heating of

Piping System

RAPID-FE1-TPX-PIP-STD-0001-0001 Project Specification Piping Design Standard

RAPID-FE1-TPX-PIP-STD-0001-0002 Project Specification Piping Construction Standard

RAPID-FE1-TPX-PIP-DES-0001-0021 Project Specification - Piping class Summary

RAPID-FE1-TPX-MEC-DES-0001-0401 Project Specification - Hot Insulation

RAPID-FE1-TPX-INC-DES-0001-9018 Project Specification - Installation of on-line

instruments

3. ACRONYMS AND DEFINITIONS

The following terms used in this document have the meaning defined below:

CONTRACT The Form Of Agreement together with the documents in order of

priority, including the exhibits, drawings, specifications and

documents referred to and in the order of precedence listed in the

Form of Agreement.

CONTRACTOR Company(ies), joint ventures or consortium appointed by OWNER

with specified authority to perform the WORK in accordance with the

CONTRACT, here the Consortium of Technip France and Technip

Geoproduction (M) Sdn Bhd.

OWNER Petroliam Nasional Berhad (PETRONAS) which includes its

representative, successors, nominees and permitted assigns and shall

where the context so admits and requires, also include its employees,

agents and designated representative.

PROJECT Refinery And Petrochemicals Integrated Development (RAPID)

Project in the State of Johor, Malaysia.

SCOPE OF WORK The scope of work to be performed and services to be rendered by

CONTRACTOR under the CONTRACT in relation to the realization

of the PROJECT.

WORK Works, tasks and WORK to be performed by CONTRACTOR as

specified in or to be inferred from the CONTRACT, more specially

set out in the SCOPE OF WORK which may be modified by

CHANGE ORDER.

SUBCONTRACTOR Any third party Subcontractor engaged by CONTRACTOR in

connection with the WORK.

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LICENSOR Process Licensors selected by OWNER for the process of LICENSED

UNITS of the FACILITIES.

EPCC CONTRACTORS The person or persons, company, join venture or consortium whose

proposal has been accepted by OWNER for Engineering,

Procurement, Construction and Commissioning Contract for the

PROJECT including its personnel, representatives, successors and

permitted assignee.

MAIN STEAM HEADER A carbon steel header running from the battery limit in the unit.

STEAM SUPPLY LINE A carbon steel pipe line running from the main steam header in the

unit to a steam distribution manifold.

STEAM DISTRIBUTION MANIFOLD Carbon steel pipe manifold for the distribution

of steam, via tracer feed lines, to a number of tracers.

TRACER FEED LINE A carbon steel line running from the steam distribution manifold to

the tracer.

TRACER A line made of stainless steel pipe running from a tracer feed line

along the pipe, instrument, or equipment to be traced, ending at the

tracer return line.

TRACER RETURN LINE A carbon steel pipe line running from the tracer to the condensate

return manifold.

CONDENSATE RETURN MANIFOLD Carbon steel pipe manifold to collect condensate, via

tracer return lines, from a number of tracers.

CONDENSATE RETURN LINE A carbon steel pipe line running from the condensate return

manifold to the condensate header.

CONDENSATE HEADER A carbon steel header running in the unit, collecting all condensate to

the battery limit.

The acronyms used in this document have the meaning defined below:

- FEED Front-End Engineering Design

- PTS PETRONAS Technical Standard

- RAPID Refinery And Petrochemicals Integrated Development

- LP Low pressure steam

- MP Medium Pressure steam

- P&ID Process & Instrument Line Diagram

- DM Steam Distribution Manifold

- CM Condensate Return Manifold

4. CODES AND STANDARDS

4.1 Applicable Codes & Standards

Unless otherwise specified, the latest applicable revision of codes and standards shall be

considered.

4.2 Order of precedence

In case of conflict between Laws, Project Specifications and Codes & Standards, the following

order of precedence shall be considered:

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- 1. Malaysian Laws and applicable regulatory requirements,

- 2. Project Specifications and supplemented PTS,

- 3. Applicable Malaysian Codes and Standards,

- 4. Applicable International Codes and Standards.

If a Lower Level requirement is more stringent than an upper one in the above documents, a

request shall be raised to OWNER for written decision before proceeding with the Design,

Manufacture or Construction.

5. GENERAL PROCESS AND ENGINEERING REQUIREMENTS

5.1 Type of Heating

The following media is used:

Conditions are as per RAPID-FE1-TPX-PRO-DES-0001-0001 Design Basis-Utilities Conditions.

Type

of steam

Temperature C Pressure Barg

Design Operating Design Operating

LP 295 185 25.0 22.0

MP 350 290 9.0 7.0

5.2 Steam Supply

LP and MP steam supply in Process and Offsite areas will be from the main LP and MP steam

headers.

5.3 Condensate Return

The condensate discharge from condensate return manifolds shall be connected to the main

condensate headers in Process Areas. In Offsite and Interconnecting areas, the condensate

discharge from condensate return manifold will be recovered as per RAPID-FE1-TPP-PRO-DES-

4200-0001 Process Design Basis Steam Associated Facilities.

5.4 Lines to be traced

Traced lines and instruments are indicated on P&IDs with proper symbol.

Lines to be traced are defined in Process & Utility Line Lists.

5.5 Tracer fastening system

- Isolating wedges shall be provided between tracer and pipe if necessary.

- Tracers shall be fastened to piping with stainless steel fastening bands. Bands shall be

placed every 0.5m maximum.

- Heat transfer cement

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5.6 Design principle

5.6.1 Steam tracing codes

- Table 1: Maintenance temperature up to 55C with LP Steam , tracing code : SL

- Table 2: Maintenance temperature between 55C and 130C with LP Steam , tracing code

: SL

- Table 3: Maintenance temperature up to 180C with MP Steam, tracing code : SM

5.6.2 Maximum tracer length

Maximum tracer length shall be confirmed by EPCC CONTRACTORS as describe in RAPID-

FE1-TPX-PIP-DES-0001-9009.

Heat tracers used are steel piping 1/2 (OD = 21.3mm) and 3/4 (OD = 26.7mm)

TRACER

NOMINAL

SIZE

(pipe)

PROCESS UNIT

ON RACK AND

INTERCONNECTING

Efficient

Max

Length

(m)

Total Max

Length (m)

Efficient

Max Length

(m)

Total Max Length

(m)

Table 1 :SL 1/2 30 + 2 x 15 = 60 45 + 2 x 15 = 75

Table 2 :SL

1/2 35 + 2 x 15 = 65 50 + 2 x 15 = 80

3/4 60 + 2 x 15 = 90 80 + 2 x 15 = 110

Table 3 :ML

1/2 65 + 2 x 15 = 95 90 + 2 x 15 = 120

3/4 95 + 2 x 15 = 125 130 + 2 x 15 = 160

5.6.3 Insulation thickness

Insulation thicknesses indicated in the hereafter Tables are in accordance with the Project

Specification Hot Insulation RAPID-FE1-TPX-MEC-DES-0001-0401.

5.6.4 Tracer fixing lines

Insulating wedges shall be provided between tracer and pipe in accordance with tables from

following paragraph Numbers of tracers calculation.

5.6.5 Number of tracers calculation

Number of tracer shall be confirmed by EPCC CONTRACTORS as describe in RAPID-FE1-TPX-

PIP-DES-0001-9009, based on following tables:

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TABLE - 1

TRACING CODE: SL

PIPE MAINTENANCE TEMPERATURE: T < 55C

Type of heating medium: Low Pressure STEAM, 5 barg / 165C

General air Condition - Design Minimum temperature : 20 C

Associated wind velocity : 32.5 m/s (from General Design Specification RAPID-FE1-TPX-

ENG-PRC-0001-0202 paragraph 14.3 Design Wind velocities).

Design Maximum temperature : 36.5 C

Associated wind velocity : 1 m/s (Standard value for minimum wind velocity)

MAIN LINE (to be

traced) DIAMETER

TRACING INSULATION

Maximum

Real Fluid

Temperature

Inside the

Line (C)

Steam

Flowrate

Nominal

(inch)

External

(mm)

Nominal

Diameter

(inch)

External

Diameter

(mm)

Nbr

Fixation

System

Int.

Diameter

(mm)

Thickness

(mm)

kg/h.100m

3/4 26.7 1/2 21.30 1 Spacer 48.0 30 85.4 5.3

1 33.4 1/2 21.30 1 Spacer 54.7 30 82.9 5.5

3/2 48.3 1/2 21.30 1 Spacer 69.6 30 78.3 5.9

2 60.3 1/2 21.30 1 Spacer 81.6 30 75.3 6.1

3 88.9 1/2 21.30 1 Spacer 110.2 40 74.8 6.1

4 114.3 1/2 21.30 1 Spacer 135.6 40 70.9 6.4

6 168.3 1/2 21.30 2 Spacer 200.3 40 80.7 11.4

8 219.1 1/2 21.30 2 Spacer 251.1 40 75.6 12.2

10 273.1 1/2 21.30 2 Spacer 305.1 40 71.5 12.8

12 323.9 1/2 21.30 2 Spacer 355.9 40 68.3 13.2

14 355.6 1/2 21.30 3 Spacer 398.2 40 75.7 18.3

16 406.4 1/2 21.30 1 Clamp 427.7 40 97.2 31.3

18 457.2 1/2 21.30 1 Clamp 478.5 40 94.2 32.8

20 508.0 1/2 21.30 1 Clamp 529.3 40 91.5 34.2

22 558.2 1/2 21.30 1 Clamp 579.5 40 89.1 35.3

24 609.6 1/2 21.30 1 Clamp 630.9 40 86.9 36.5

26 660.4 1/2 21.30 1 Clamp 681.7 40 84.8 37.5

28 711.2 1/2 21.30 1 Clamp 732.5 40 83.0 38.5

30 762.0 1/2 21.30 1 Clamp 783.3 40 81.2 39.3

32 821.8 1/2 21.30 1 Clamp 843.1 40 79.4 40.3

34 863.6 1/2 21.30 1 Clamp 884.9 40 78.1 40.9

36 914.4 1/2 21.30 1 Clamp 935.7 40 76.8 41.6

42 1066.8 1/2 21.30 1 Clamp 1088.1 40 73.1 43.4

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TABLE - 2

TRACING CODE: SL

PIPE MAINTENANCE TEMPERATURE: 55 < T < 130C

Type of heating medium: Low Pressure STEAM, 5 barg / 165C






MAIN LINE (to

be traced)

DIAMETER

TRACING INSULATION

Maximum Real

Fluid

Temperature

Inside the Line

(C)

Steam

Flowrate

Nominal

(inch)

External

(mm)

Nominal

Diameter

(inch)

External

Diameter

(mm)

Nbr

Fixation

System

Int.

Diameter

(mm)

Thickness

(mm)

kg/h.100m

3/4 26.7 3/4 26.70 1 Clamp 53.4 30 138.5 13.0

1 33.4 3/4 26.70 1 Clamp 60.1 30 137.1 13.9

3/2 48.3 1/2 21.30 2 Clamp 80.3 30 141.3 18.1

2 60.3 1/2 21.30 2 Clamp 92.3 30 139.6 19.7

3 88.9 1/2 21.30 2 Clamp 120.9 40 139.7 19.6

4 114.3 1/2 21.30 2 Clamp 146.3 40 137.2 22.1

6 168.3 1/2 21.30 3 Clamp 210.9 40 139.0 30.6

8 219.1 3/4 26.70 3 Clamp 272.5 40 139.1 38.2

10 273.1 1/2 21.30 4 Clamp 315.7 40 138.0 42.8

12 323.9 3/4 26.70 4 Clamp 377.3 40 139.2 50.9

14 355.6 3/4 26.70 4 Clamp 409.0 40 137.9 54.1

16 406.4 1/2 21.30 2 Cement 438.4 40 139.9 58.9

18 457.2 1/2 21.30 2 Cement 489.2 40 138.2 63.9

20 508.0 3/4 26.70 2 Cement 548.1 40 140.2 72.5

22 558.2 3/4 26.70 2 Cement 598.3 40 138.9 77.7

24 609.6 3/4 26.70 2 Cement 649.7 40 137.6 82.5

26 660.4 1/2 21.30 3 Cement 703.0 40 139.4 90.9

28 711.2 1/2 21.30 3 Cement 753.8 40 138.3 95.9

30 762.0 1/2 21.30 3 Cement 804.6 40 137.3 100.8

32 821.8 3/4 26.70 3 Cement 875.2 40 139.7 112.4

34 863.6 3/4 26.70 3 Cement 917.0 40 139.0 116.5

36 914.4 3/4 26.70 3 Cement 967.8 40 138.2 121.2

42 1066.8 1/2 21.30 4 Cement 1109.4 40 136.9 136.6

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TABLE - 3

TRACING CODE: ML

PIPE MAINTENANCE TEMPERATURE: T < 180C

Type of heating medium: Medium Pressure STEAM, 19 barg / 275C






MAIN LINE (to

be traced)

DIAMETER

TRACING INSULATION

Maximum Real

Fluid

Temperature

Inside the Line

(C)

Steam

Flowrate

Nominal

(inch)

External

(mm)

Nominal

Diameter

(inch)

External

Diameter

(mm)

Nbr

Fixation

System

Int.

Diameter

(mm)

Thickness

(mm)

kg/h.100m

3/4 26.7 3/4 26.70 1 Clamp 53.4 30 138.5 13.0

1 33.4 3/4 26.70 1 Clamp 60.1 30 137.1 13.9

3/2 48.3 1/2 21.30 2 Clamp 80.3 30 141.3 18.1

2 60.3 1/2 21.30 2 Clamp 92.3 30 139.6 19.7

3 88.9 1/2 21.30 2 Clamp 120.9 40 139.7 19.6

4 114.3 1/2 21.30 2 Clamp 146.3 40 137.2 22.1

6 168.3 1/2 21.30 3 Clamp 210.9 40 139.0 30.6

8 219.1 3/4 26.70 3 Clamp 272.5 40 139.1 38.2

10 273.1 1/2 21.30 4 Clamp 315.7 40 138.0 42.8

12 323.9 3/4 26.70 4 Clamp 377.3 40 139.2 50.9

14 355.6 3/4 26.70 4 Clamp 409.0 40 137.9 54.1

16 406.4 1/2 21.30 2 Cement 438.4 40 139.9 58.9

18 457.2 1/2 21.30 2 Cement 489.2 40 138.2 63.9

20 508.0 3/4 26.70 2 Cement 548.1 40 140.2 72.5

22 558.2 3/4 26.70 2 Cement 598.3 40 138.9 77.7

24 609.6 3/4 26.70 2 Cement 649.7 40 137.6 82.5

26 660.4 1/2 21.30 3 Cement 703.0 40 139.4 90.9

28 711.2 1/2 21.30 3 Cement 753.8 40 138.3 95.9

30 762.0 1/2 21.30 3 Cement 804.6 40 137.3 100.8

32 821.8 3/4 26.70 3 Cement 875.2 40 139.7 112.4

34 863.6 3/4 26.70 3 Cement 917.0 40 139.0 116.5

36 914.4 3/4 26.70 3 Cement 967.8 40 138.2 121.2

42 1066.8 1/2 21.30 4 Cement 1109.4 40 136.9 136.6

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6. INSTRUMENTS

Instrument requiring tracing are defined in instrument list in accordance with piping and

instrumentation diagrams.

They can be:

- Flanged-mounted instruments, such as control valves, ON-OFF valves, flow elements, rotameters,

pressure safety valves, or any flanged mounted instrument.

- Tapped-mounted and remote instruments, such as pressure transmitters, level transmitters, flow

transmitters, or any tapped mounted instrument.

7. DETAIL ENGINEERING AND DESIGN REQUIREMENTS

7.1 Purpose

The purpose of detail engineering and design is to develop, from the documents prepare all

necessary documents and/or calculations which are required to purchase materials, fabricate, install

and test the Steam tracing network.

7.2 General design

Caution shall be taken that tracer feed lines, tracers and tracer return lines do not interfere with

valves, equipment, instruments, etc. in hindering of access, operation, maintenance and removal.

- Each tracer feed line shall have a separate valved connection on the steam distribution

manifold. Each tracer return line shall be provided with its own steam trap.

- Steam Supply /Condensate Return Manifolds shall be prefabricated in accordance with

Construction Standards rules.

- Installation of manifold is preferred in vertical position rather than horizontal position for

space and size matters.

- Vertical and horizontal steam supply manifolds shall have a maximum of 12 tracer

connections, including dedicated connections for instruments and spare.

- Vertical and horizontal condensate return manifolds shall have a maximum of 12 tracer

connections, including dedicated connections for instruments and spare.

- Tracer isometric drawings shall show the tracer route in dotted line, the tracer feed

sequence number from steam manifold and the tracer return sequence number to

condensate return manifold, as well as tracer feed and tracer return pipe length.

- All valves and traps shall be accessible from grade or platform.

- Each tracer supply shall be routed, to the object to be traced, as short as possible, in

accordance with Construction Standards. The tracer shall start at the highest point and be

routed downwards to the steam trap at the condensate collector.

- Tracer feed and tracer return lines shall be insulated in accordance with the Project

Specification Thermal Insulation - RAPID-FE1-TPX-MEC-DES-0001-9002 .

- If a line needs more than one tracer, a tracer may run back and forward along the line as

long as the maximum length is not exceeded.

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- Tracing of two different objects with the same tracer is not permitted. Suction and

discharge piping on two or more parallel pumps shall also be treated separately to enable

dismantling at those pumps while others remain in operation.

- Tracers that follow the contour of equipment shall start at the highest point to be traced.

7.3 Steam tracer installation

- Single tracers shall run along the bottom half of the horizontal pipe line to be traced.

Multiple tracers shall run at an angle to the vertical axis of the horizontal pipe line and

equally spaced at vertical pipe lines (see PTS.31.38.30.11 sheet 20).

- Flange connections shall be used for tracer dismantling but their use shall be limited as

much as possible.

- Flange connections shall be installed at pumps, equipment, control valves, relief valves,

special break-out flanges, spectacle blinds and orifice flanges. They shall be installed

outside the insulation to permit dismantling.

- Vents, drains, equipment nozzles, chemical cleaning connections and/or steam-out

connections, and all other dead ends at a traced object shall be traced to its extremity or up

to and including its first shut-off valve.

7.4 Thermal expansion

- The thermal expansion for tracing will be define by EPCC CONTRACTORS following

tracer material final choice:

Type of steam Material Thermal Expansion

LP Steam at 185 C Stainless steel pipe To be defined during EPCC

stage

MP Steam at 290 C Stainless steel pipe To be defined during EPCC

stage

- On long runs, tracers shall be provided with expansion loops. The loops shall be extended

outside the insulation and shall be insulated separately.

- Installing flange connections in loops is not allowed.

7.5 Instruments

Tracing of instruments shall be as per the Project Specification - Installation of on-line instruments

- RAPID-FE1-TPX-INC-DES-0001-9018 and as per Instrument Hook-up.

7.6 Supporting

- Tracer feed and return lines (lines running from manifold to tracer or from tracer to

manifold) shall be adequately supported with an acceptable method, preferably from, but

not attached to, adjacent structural steel and not from process lines.

- The distance between support points shall not exceed 3 m. Supply and return lines, coming

from or going to the same manifold, shall be grouped together as much as possible for

common supports.

- Tracer supply and return lines shall not be pocketed except where absolutely necessary for

head room, operation and maintenance.

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- Tracers shall be supported from the traced object by means of Stainless Steel bands. No

deformation of tracing, due to bending shall be allowed. In all cases the tracer shall be held

tight to the object to be traced without sags.

- On pipe rack or pipe way, in offsite or in interconnecting, expansion loops shall be

provided.

- Fastening bands shall be installed allowing tracer thermal expansion expect for anchor

points which shall be more tightened.

- Tracer bands shall be located as close as possible to the back face of each flange.

8. STEAM TRACING DOSSIERS

8.1 Drawing requirements

8.1.1 Location of steam distribution manifolds (DM) and condensate return manifolds (CM)

The location of steam distribution manifolds (DM) and condensate return manifolds (CM) shall be

specified on drawings called Location plan for Steam Supply (DM) and Condensate Return (DM)

manifolds. All manifolds shall be tagged as per RAPID-FE1-TPX-PIP-STD-0001-0002 sheet 655.

If manifolds are located on platform, elevation shall be indicated. Plot Plans shall be used as

background for those Location plans.

8.1.2 Steam supply and condensate Return Manifolds P&IDs

Steam supply and condensate Return Manifolds P&IDs shall be prepared by Piping group.

It includes:

- Manifold arrangement (tag number, line number, design area allocation)

- Tracer size, tracer sequence number, tracer destination (line to be traced)

- From/to connection to steam/condensate P&IDs

8.1.3 Isometrics

Steam supply line, condensate return line and manifolds isometrics.

8.1.4 List of traced lines

List of traced lines (including line number, piping class, diameter, insulation code and design area

number).

8.1.5 Traced isometrics

Traced isometrics (mark-up isometric) including the following information

- Tracer feed line number from steam manifold and tracer return line number to condensate

return manifold.

- Pipe length of tracer feed line and tracer return line

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8.1.6 Heat tracing nomenclature

Table which sums up all above information in order to trace stream traced line and ensure proper

installation during construction activities. Refer to RAPID-FE1-TPX-PIP-STD-0001-0002 Project

Specification Piping Construction Standard for manifold nomenclature.

9. MATERIALS

- Materials for the tracing systems shall be in accordance with the applicable piping classes .

Substitutions, including thicker wall materials, are not permitted without written approval

of Purchaser.

- Components shall be new, clean and unused.

- For all threaded pipe to tube connections, shall be in accordance with ASME/ANSI

B1.20.1 and shall be seal welded with a full strength fillet weld

- For attachment of tracing, fully softened 18-8 Stainless Steel bands, 10 x 0.4 mm, shall be

used. Seal or buckles for use with bands shall be from 18-8 fully softened Stainless Steel

10. FABRICATION

- Installation shall be done in accordance with Steam Tracing Dossiers, Construction

Standards and this specification.

- Welding shall be in accordance with Project Specification for Shop and field fabrication of

piping system.

- All carbon steel exterior surfaces, except machined flange faces, shall receive surface

preparation and primer coating, in accordance with applicable project specification.

11. INSPECTION AND TESTING

11.1 Cleaning

Tracing systems shall be cleaned of weld spatter, pipe scale, rust and other debris prior to testing

and operation by using either steam or air.

11.2 Inspection

The following visual inspections shall be made prior to testing and insulating:

- Tracing shall be visually inspected for kinked or flattened sections. All such sections shall

be cut out and replaced.

- Tracer attachments shall be checked to ensure freedom of movement towards expansion

loops.

- Tracer attachments shall be inspected at expansion loops, at equipment breakpoints, and

other changes of direction where movement of tracer could damage the insulation.

11.3 Testing

The tracer systems shall be pressure tested, prior to insulation.

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RAPID-P0005-TYO-PIP-DES-2000-0003 Attachment-3

TABLE-1

TRACING CODE: SL PIPE MAINTENANCE TEMPERATURE: T < 55 C

Type of heating medium: Low Pressure Steam, 5 barg / 165 C, Saturated temperature 158.8 C General air condition Design Minimum temperature: 20 C

Main Line Tracer Insulation

Nominal Diameter

(DN)

External Diameter

(mm)

Nominal Diameter

(DN)

Numbers of Tracer

Tracer Fixation Thickness (mm)

20 26.7 15 1 Fastening Band 30






















1050 1066.8 15 4 Fastening Band 30


TABLE-2

TRACING CODE: SL PIPE MAINTENANCE TEMPERATURE: 55 C < T < 100 C

Type of heating medium: Low Pressure Steam, 5 barg / 165 C, Saturated temperature 158.8 C General air condition Design Minimum temperature: 20 C


Nominal Diameter

(DN)

External Diameter

(mm)

Nominal Diameter

(DN)

Numbers of Tracer


20 26.7 15 1 Heat Transfer Cement 20
























TABLE-3

TRACING CODE: SM PIPE MAINTENANCE TEMPERATURE: 100 C < T < 130 C

Type of heating medium: Medium Pressure Steam, 19 barg / 275 C, Saturated temperature 212.4 C General air condition Design Minimum temperature: 20 C


Nominal Diameter

(DN)

External Diameter

(mm)

Nominal Diameter

(DN)

Numbers of Tracer

























B


Basis of Calculation for Decision of Number of Tracers is in accordance with THERMAL INSULATION HANDBOOK (by William C. Turner; Publisher: Krieger Pub Co; 2nd edition (June 1, 1969)).

Case 1 : Fluid in traced pipe is flowing

QoQiQ += (1)

)(1)ln(

21 1

12

1TiTad

ddd

TiTaQi ai

aii

i

i

=+

= a

al

(2)

aoooo

o

i dddd

ToTaQo

aal 2121 11)ln(

21

++

= (3)

)(1 TaTtdnQ at = a (4)

The equation (5) is calculated from equation (1) through (4):

Rdnd

ToR

TtdnTidTa

atai

atai

1

1

11

11

++

++=

aa

aa (5)

where

aoooo

o

o ddddR

aal 2121 11)ln(

21

++=

If ia TT is satisfied, it is judged that number of tracers is sufficient enough to keep maintenance temperature. Case 2 : Fluid in traced pipe is not flowing

QoQiQ +=

In this case Qi need not be considered, hence:

0=iQ

oQQ = (6)

Rdn

ToR

TtdnTa

at

at

1

1

1

1

+

+=

a

a (7)

Calculation Basis for Number and Size of Tracers


where Q : Heating value from tracer [kcal / (m * h)] Qi : Heating value to process fluid [kcal / (m * h)] Qo : Heating value to atmosphere [kcal / (m * h)] To : Temperature at atmosphere [deg C] Ti : Temperature of Fluid [deg C] Ta : Temperature of air layer between insulation and process pipe [deg C] Tt : Temperature of Tracer [deg C] o : Heat transfer coefficient at the surface of Insulation [ 20 kcal / (h * m2 * deg C)] a : Heat transfer coefficient between insulation and process pipe [ 5 kcal / (h * m2 * deg C)] o : Thermal conductivity of insulation [kcal / (h * m * deg C)] i : Thermal conductivity of process pipe [kcal / (h * m * deg C)] n : Number of tracers do1, do2 : Outside / Inside diameter of insulation di1, di2 : Outside / Inside diameter of process pipe dt1, dt2 : Outside / Inside diameter of tracer Case 3 : Heat Transfer Compound is provided between tracer pipe and process pipe

QbQaQo += (8)

QbQi = (9)

)(1 TiTtSqnQ ii = (10)

)()( 11 TaTiSndQb ai = a (11)

)(2 TaTtSnQa a = a (12)

aoooo

o

o dddd

ToTaQo

aal 2121 11)ln(

21

++

= (13)

ai

i

nSdTiTtSnqTiTaa )(

)(

11

1

= (14)

The equation (15) is calculated from equation (8) through (13)

''1

')'

(

RK

RBKAKA

RTo

RKBKAKATt

Ti++++

++++= (15)

where

anSA a2=

ai nSdB a )( 11 =

T

Qi Ti

Qo Qo

To

Ta

Q


BSnq

nSdSnqK i

ai

i 1

11

1

)(=

=

a

aalR

ddddR

aoooo

o

o

=++=212

1 11)ln(2

1'

S1 : Contact area between heat transfer compound and process pipe [m2] S2 : Contact area between heat transfer compound and air layer inside insulation [m2] qi : Heat transfer coefficient in case that heat transfer compound is used and radiant heat of tracer is transferred to process pipe [kcal / (h * m2 * deg C)]

qi = 167 (DN 40 and under) qi = 105 (DN 200)qi = 159 (DN 50) qi = 89 (DN 250)qi - 142 (DN 80) qi = 71 (DN 300)qi = 131 (DN 100) qi = 59 (DN 350)qi = 116 (DN 150) qi = 47 (DN 400 and larger)

(quoted from Thermal Insulation Handbook) Qa : Heat value from tracer to air layer inside insulation [kcal / (m * h)] Qb : Heat value from process pipe to to air layer inside insulation [kcal / (m * h)] Qi : Heat value from tracer to process pipe [kcal / (m * h)] Qo : Heating value to atmosphere [kcal / (m * h)]

To Qo Qo

Ti Qi Ta

Tt Qa

Qb

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Typical Installation Detail

As a rule, steam tracers shall be arranged as per following sketches. Fig-1: For Piping (1/2 2/2) Fig-2: For Control Valves (1/2 2/2) Fig-3: For Vessel Nozzles (1/1) Fig-4: For In-line Instruments and Equipment (1/3 3/3) Fig-5: For Sampling Points (1/1) Fig-6: For Pump Piping and Pump (1/4 4/4)

B



Fig-1 For Piping (1/2) B



Fig-1 For Piping (2/2)

B



Fig-2: For Control Valves (1/2)

Flange connection to be provided on tracer for control valve.

Flange connection to be provided on tracer for control valve.

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B

B B

B

B



Fig-2: For Control Valves (2/2)

Flange connection to be provided on tracer for control valve. B

B



Fig-3: For Vessel Nozzles (1/1)

Flange connection on tracer for dismantling


B

B B

B



Fig-4: For In-Line Instruments and Equipment (1/3)

Tubing can be applied If difficult to install tracer piping


B

B




Tracer to be run along with bottom of discharge flange of PSV and piping.

B









B

B

B B

B B

B

B







B

B B

B



Fig-5: For Sampling Points (1/1) B



Fig-6: For Pump Piping and Pump (1/3) B



Fig-6: For Pump Piping and Pump (2/3) B



Fig-6: For Pump Piping and Pump (3/3)

B

Documents

Pipe Steam Tracing