SPECIFICATION FOR LINE PIPE...

VISAKH MARKETING INSTALLATION RESITEMENT

PROJECT LPG TERMINAL

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Signature and Seal of the Bidder Tender No: 9000004-HD-10147 Page 1 of 28

SPECIFICATION FOR

LINE PIPE

(ONSHORE)

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Mott MacDonald Consultants (India) Pvt. Ltd.

Kothari House, CTS No. 185

Off Andheri - Kurla Road

Andheri (East)

Mumbai 400 059

Hindustan Petroleum Corporation Ltd

Visakha Dispatch Station

VR-ATP Area, Naval Base Post

Visakhapatnam - 530 014

Andhra Pradesh



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SPECIFICATION FOR

LINE PIPE

(ONSHORE)

Client HINDUSTAN PETROLEUM CORPORATION LTD.

MMCI Project No. 256324

Group Disclaimer

"This document has been prepared for the titled project or named part thereof and should not be relied upon or

used for any other project without an independent check being carried out as to its suitability and prior written

authority of Mott MacDonald being obtained. Mott MacDonald accepts no responsibility or liability for the

consequences of this document being used for a purpose other than the purposes for which it was commissioned.

Any person using or relying on the document for such other purpose agrees, and will by such use or reliance be

taken to confirm his agreement, to indemnify Mott MacDonald for all loss or damage resulting therefrom. Mott

MacDonald accepts no responsibility or liability for this document to any party other than the person by whom it

was commissioned."



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List of Content Page No

1 Introduction 6

1.1 General 6

1.2 Project Description 6

1.3 Abbreviation and Definition 7

1.3.1 Abbreviation 7

1.3.2 Definitions 7

1.4 Product Specification Level (PSL) 7

1.5 Grades 7

1.6 Dimensions 7

2 References 8

3 Process of Manufacture and Material 8

3.1 Process of Manufacture 8

3.2 Cold Expansion 8

3.3 Material 8

3.4 Heat Treatment 8

4 Material Requirements 8

4.1 Chemical Properties 8

4.1.1 Chemical Composition 8

4.1.2 Elements Analyzed 9

4.1.3 Carbon Equivalent (API 5L PSL 2 Only) 9

4.2 Mechanical Properties 9

4.2.1 Tensile Properties 9

4.2.2 Fracture Toughness Tests 9

5 Dimensions, Weights, Lengths, Defects and End Finishes 9

5.1 Diameter 9

5.2 Wall Thickness 10

5.3 Length 10

5.4 Straightness for API 5L only 10

5.5 Jointers 10

5.6 Workmanship and Defects 10

5.6.1 Dents 10

5.6.2 Hard Spots for API 5L only 11

5.6.3 Cracks, Sweats and Leaks 11

5.6.4 Laminations 11

5.6.5 Other Defects for API 5L only 11



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5.7 Pipe Ends 11

5.7.1 General 11

5.7.2 Plain Ends 11

5.7.3 Bevel Protectors 11

6 Inspection and Testing 12

6.1 Testing Of Chemical Composition 12

6.1.1 Product Analysis 12

6.2 Testing Of Mechanical Properties 12

6.2.1 Tensile Tests 12

6.2.2 Fracture Toughness Tests 12

6.2.3 Flattening Test Requirement (A333M Pipe Only) 13

6.3 Hydrostatic Tests 13

6.3.1 Hydrostatic Test Requirements 13

6.3.2 Verification of Hydrostatic Test 13

6.3.3 Test Pressure 13

6.4 Dimensional Testing 13

6.5 Non Destructive Inspection 13

6.5.1 Qualification of Personnel 13

6.5.2 Methods of Inspection 14

6.5.3 Ultrasonic and Electromagnetic Inspection 14

6.6 Disposition of Pipe Containing Defects 15

6.7 Retests 15

6.7.1 Recheck of Chemical Analysis (API 5L Pipe Only) 15

6.7.2 Charpy Retests (API 5L Pipe Only) 15

6.7.3 Mechanical Requirements Retest (ASTM A333M Pipe Only) 16

7 Marking 16

7.1 General 16

8 Coating and Protection 16

8.1 Coatings 16

9 Documents 16

9.1 Certification 16

9.2 Retention of Records 16

9.3 Production Report (API 5L Pipe Only) 16

9.4 Line Pipe Traceability Data (API 5L Pipe Only) 17

10 Inspection of Field Tests & Warranty 17

11 Guarantee 17



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12 Pipe Loading 17

Appendix-A: - Purchaser Inspection 18

Appendix-B: - Marking Instructions for API Licensees 19

Appendix-C: - Table of Compliance. 20

Appendix-D: - Basic Pipeline Design Data. 21

Appendix–E:- Requisition of Engineering Documents (RED Form) 28



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1 Introduction

1.1 General

This Specification establishes the minimum requirements for the manufacture of steel line pipe

in accordance with the requirements laid down in this specification.

1.2 Project Description

HPCL has plans to modernize Visakh refinery and marketing infrastructure. HPCL has

committed to production and marketing of EURO IV standard products in Automobile Fuel

quality by 2010 and is also adding delayed Coker Unit (DCU) to improve the yield of middle

distilleries. Further, Visakh refinery has plans to expand its refining capacity to 15 MMT from

current installed 7.5 MMT by 2015, on the basis of market demand.

The LPG facility at INS Dega will incorporate latest safety features while maintaining the

present storage capacities & throughputs.

The facility will be capable of handling LPG, Auto LPG and Propylene.

Auto LPG and Propylene would be received from refinery production throughout dedicated

cross country pipelines. Dedicated mounded bullets will be provided for these. LPG would be

received from refinery production or SALPG Cavern storage near Sunken Ship Jetty.

Major quantity of LPG will be supplied to GAIL terminal /network. LPG will be dispatched

through tank truck & tank wagons. It will also be bottled in cylinders. Auto LPG & Propylene

will be dispatched through Tank Trucks only.

The following pipelines are envisaged:

• 1 No. of new 12” LPG Non-Piggable pipeline from INS Dega plot to interconnecting

pipeline going to GAIL Terminal.

• 1 No. of new 12” LPG Piggable pipeline from pig launcher area in LPG receipt station to

INS Dega Plot LPG Marketing Terminal.

• 1 No. of new 6” Auto LPG Piggable pipeline from pig launcher area in LPG receipt station

to INS Dega Plot LPG Marketing Terminal.

• 1 No. of new 6” Propylene Piggable pipeline from pig launcher area in LPG receipt station

to INS Dega Plot LPG Marketing Terminal.



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1.3 Abbreviation and Definition

1.3.1 Abbreviation

API American Petroleum Institute

ASNT American Society for Non Destructive Testing

ASTM American Society for Testing and Materials

HAZ Heat Affected Zone

CS Carbon Steel

DWT Drop Weight Tear Test

ID Inside Diameter

ISO International Standards Organisation

NB Nominal Bore

NDT Non Destructive Testing

NPS Nominal Pipe Size

OD Outside Diameter, Specified

OISD Oil Industry Safety Directorate

PSL Pipe Specification Level

QCP Quality Control Plan

SMYS Specified Minimum Yield Stress

UT Ultrasonic Testing

WT Wall Thickness, Specified

1.3.2 Definitions

The following terms are used in this specification:

Manufacturer shall mean the manufacturer or supplier of the

Materials covered by this Specification.

Purchaser shall mean HPCL or its authorised agent.

Shall shall indicate a mandatory requirement.

1.4 Product Specification Level (PSL)

Line pipe supplied to this specification shall conform to Product Specification Level PSL 2

and ASTM A333M Grade 6 Seamless as and where specified.

1.5 Grades

This specification is applicable to API 5L Grade B PSL 2 Line Pipe and ASTM A333M Gr-6

Pipe.

1.6 Dimensions

This specification shall be applied to line pipe of size 12” and 6”.



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2 References

The latest editions (edition enforced at the time of issue of enquiry) of following additional

references are included in this specification:

OISD –141 (2003) : Oil industry safety Directorate Standard for Design and Construction

Requirements for Cross country Hydrocarbon Pipeline.

API Spec 5L (2007) : Specification for Line Pipe.

ASME B31.4 (2006) : Pipeline Transportation System for Liquid Hydrocarbons and Other

Liquids

ASTM A333/A333M (2007): Seamless and Welded Pipe for Low temperature Service.

ASTM A530/A530M (1999): General requirements for specialized carbon and Alloy Steel

Pipes.

3 Process of Manufacture and Material

3.1 Process of Manufacture

Following paragraphs of API Spec 5L shall be applicable to the line pipe manufactured as per

this specification:

Seamless Pipe : As per Para 4.44

3.2 Cold Expansion

Pipes furnished to this specification shall be non-expanded.

3.3 Material

Line pipe furnished to this specification and manufactured as per API Spec 5L, shall be made

from steel produced in basic oxygen or electric arc furnace. The steel used for manufacture of

pipe shall be fully killed and fine grained with a grain size of ASTM 7 or finer as per ASTM E

112. Steel shall be made by continuous casting only.

The Line pipe furnished to this specification and manufactured as per ASTM A333/A333M

shall be made as per the requirements of Para 3 of ASTM A530/A530M and Para 4.1 of

ASTM A333/A333M.

3.4 Heat Treatment

The pipes shall be heat treated as per the provision of API Spec 5L Table 3 and Para 4.2 of

ASTM A333/A333M or as agreed upon between Purchaser and Manufacturer.

4 Material Requirements

4.1 Chemical Properties

4.1.1 Chemical Composition

The chemical composition of each heat of steel on product analysis shall be in accordance

with Para 9.2 of API Spec 5L.

If alloying elements other than those specified in Table 5 of API Spec 5L are added to the

steel, the limits of the additional components shall be agreed with the Purchaser.



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For the Line manufactured as per ASTM A333/A333M the chemical composition of each heat

of steel on product analysis shall be in accordance with Para 6 of ASTM A333/A333M. The

line should conform to the requirements of Table 1 of ASTM A333/A333M.

4.1.2 Elements Analyzed

For heat analysis and product analysis, all the elements listed in Table 5 of API Spec 5L and

Table 1 of ASTM A333/A333M shall be analyzed and reported, even if those are not

purposely added but are present as residuals only.

4.1.3 Carbon Equivalent (API 5L PSL 2 Only)

4.1.3.1 Calculation of Carbon Equivalent

The calculation for Carbon Equivalent shall be done on the basis of Para 9.2 of API Spec 5L.

4.1.3.2 Maximum Carbon Equivalent

For pipes of all grades, size and wall thickness, Carbon Equivalent shall comply with the

Table 5 of API Spec 5L.

4.2 Mechanical Properties

4.2.1 Tensile Properties

The finished pipe (after all heat treatment and expansion or sizing operations) shall conform to

the requirements of Table 7 of API Spec 5L for the lines furnished as per API Spec 5L and

Table 3 of ASTM A333/A333M for the lines furnished as per ASTM A333/A333M .

The minimum elongation of base metal shall be determined in accordance with the formula

given in the foot note (f) of Table-7 and shall comply with the minimum values of API Spec

5L.

4.2.2 Fracture Toughness Tests

4.2.2.1 Charpy Impact Tests for API 5L PSL 2

For all pipe sizes and specified wall thickness, fracture toughness requirements as per Para 9.8

& Table 8 of API Spec 5L for body of the Pipe.

4.2.2.2 Supplementary Fracture Toughness Tests

Drop Weight Tear Test (DWT) in accordance with the Requirements of Para 9.9 of API Spec

5L shall be performed for all grades and wall thickness.

4.2.2.3 Impact Test for ASTM A333/A333M Pipe

The Impact Test shall be performed as per the requirements of ASTM A333/A333M; the test

temperature shall be at least -48°C for the ASTM A333M Grade 6 Seamless Pipe, Table 5 of

ASTM A333/A333M stands modified accordingly.

5 Dimensions, Weights, Lengths, Defects and End Finishes

5.1 Diameter

Pipe Body

The outside diameter of pipe body, as determined by taping the circumference, shall be in

accordance with Para 9.11.1 of API Spec 5L.



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For the pipe manufactured according to ASTM A333/A333M, the permissible variation in the

inside and outside diameter shall be as per the provisions of ASTM A530/A530M Para 9 and

Para 10 respectively.

Pipe Ends for API 5L Only

Diameter tolerances for the pipe ends indicated in API Spec 5L Table 10 shall be applicable.

Out of Roundness for API 5L Only

Out of Roundness i.e., the difference between the maximum and minimum diameter (inside

for pipe size > 14 and outside for pipe size ≤ 12) at pipe ends shall comply with the limits in

accordance with Table 10 of API Spec 5L.

All dimensions and tolerances shall be measured and recorded at least 3 times per operating

shift (12 hrs maximum).

5.2 Wall Thickness

In addition to requirements mentioned in Para 9.11.3.2 of API Spec 5L, the wall thickness of

each pipe shall be checked along the circumference at both ends and at the mid location of

pipe body at 12 o'clock, 3 o'clock, 6 o'clock and 9 o'clock positions. The wall thickness

tolerance shall comply with the requirements of Table 11 of API Spec 5L. Wall thickness

shall be measured and recorded at least 3 times per operating shift (12 hours maximum).

For the pipe furnished based on ASTM A333/A333M, the requirements of Para 8 of ASTM

A530/A530M shall be followed.

5.3 Length

The tolerance for lengths shall be as per Table 11 of API Spec 5L and Para 9 of ASTM

A333/A333M.

Each pipe shall be measured for conformance to above requirements and all measurements

shall be recorded.

5.4 Straightness for API 5L only

The tolerance for straightness shall be as per Para 9.11.3.4 of API Spec 5L Straightness shall

be measured and recorded at least 3 times per operating shift (12 hours maximum).

The tolerance for straightness for pipe furnished as per ASTM A333/A333M shall according

to the requirements of Para 14 of ASTM A530/A530M.

5.5 Jointers

Jointers on pipes are not permitted.

5.6 Workmanship and Defects

5.6.1 Dents

Allowable dent size shall be as per Para 9.10.5 of API Spec 5L. Disposition of dents shall be

carried out in accordance with API Spec 5L Annexure E Para 10.

For the pipe furnished as per ASTM A333/A333M, the requirements of Clause 5.2 of this

specification shall be applicable.



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5.6.2 Hard Spots for API 5L only

Any hard spot having a minimum dimension greater than 2 in. (50.8 mm) in any direction and

hardness greater than the values as per Para 9.10.6 of API Spec 5L shall be rejected. The

section of pipe containing the hard spot shall be removed as a cylinder.

5.6.3 Cracks, Sweats and Leaks

Sections of the pipe containing cracks, sweats and leaks shall he cut off as per the requirement

of API Spec 5L Annexure C Para 2 or Para 3.

For the pipe furnished to ASTM A333/A333M, the requirements of Para 10.3.1 and 10.3.2

shall be applicable.

The pipe manufactured as per ASTM A333/A333M shall be subject to rejection if surface

imperfections acceptable under Para 10.2 of ASTM A333/A333M are not scattered, but

appear over a large area in excess of what is considered as workmanlike finish, as per the

requirement of Para 10.4 of ASTM A333/A333M. Repair by welding is not permitted.

5.6.4 Laminations

Any lamination or inclusion either extending into the face or bevel of the pipe or present

within 25 mm from pipe ends is considered defect and pipe containing such defects shall be

cut back until such defects are eliminated. The acceptance limit and disposition of lamination

and other type of defects on the skelp/pipe body shall be as per Para 10 API Spec 5L.

5.6.5 Other Defects for API 5L only

Any imperfection (measured from the surface) with a depth greater than 5 % of the specified

thickness of the pipe shall be considered a defect and shall be repaired in accordance with API

Spec 5L Annexure C Para 2 or 3.

5.7 Pipe Ends

5.7.1 General

Pipes shall be furnished with plain ends unless specified otherwise in the purchase order.

5.7.2 Plain Ends

Unless specified otherwise, the pipe ends shall be bevelled as per API Spec.5L. In removing

the inside burrs at the pipe ends, care shall be taken not to remove excess metal and not to

form an inside cavity or bevel. Removal of excess metal beyond the minimum wall thickness

shall be a cause for re-bevelling. In case root face of bevel is less than that specified, the pipe

ends shall be re-bevelled and rectification by filing or grinding shall not be done.

The pipes furnished as per ASTM A333/A333M shall have bevel ends as per the requirements

of ASME B16.25.

5.7.3 Bevel Protectors

Both pipe ends of each pipe shall be provided with metallic or high impact plastic bevel

protectors as per Manufacturer's standard. Bevel protectors shall be of a design such that they

can be re-used by coating applicator for covering the ends during and after external anti-

corrosion coating of line pipe. Material should be inert to the material of the Pipe.



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6 Inspection and Testing

6.1 Testing Of Chemical Composition

6.1.1 Product Analysis

6.1.1.1 Sampling Frequency

For API 5L pipes two pipes per inspection lot shall be analyzed. Inspection lot shall be 100

pipes per heat. Pipes selected shall be such that one at the beginning of the heat and one at the

end of the heat are also represented.

For ASTM A333/A333M, the sampling frequency shall be as per Para 6 of ASTM

A333/A333M.

6.1 1.2 Sampling Method

Seamless Pipe

Samples used for product analysis shall be taken from finished pipes which have under gone

heat treatment as per the requirement of this specification.

6.2 Testing Of Mechanical Properties

6.2.1 Tensile Tests

Tensile properties shall be determined from specimen removed from pipe which has been

subjected to all mechanical and heat treatment operations.

For the pipe furnished as per ASTM A333/A333M, the requirements of Para 12.1 of ASTM

A333/A333M shall be applicable.

6.2.1.1 Tensile Testing Frequency

Frequency of testing shall be as per API Spec 5L Table 18.

6.2.1.2 Longitudinal Tensile Tests

Longitudinal tensile tests shall be carried out on a strip specimen.

6.2.1.3 Transverse Tensile Tests

The transverse tensile tests shall be carried out on flattened rectangular specimen.

6.2.2 Fracture Toughness Tests

6.2.2.1 Charpy Test Specimens

When either full size or sub-size transverse specimen as per API Spec 5L, Table 22 is not

possible to obtain, transverse specimen of either Size 1/3 or 1/4 Size, whichever is maximum

possible, may be obtained.

When such sub-size specimens are used, the acceptance of the individual / average absorbed

energy values shall be established as per API Spec 5L Para 9.8.1.1.

For pipe furnished as per ASTM A333/A333M the requirements of Para 13 of the same

standard shall be applicable.

6.2.2.2 Charpy Testing Frequency

The minimum test frequency shall be one test per heat per lot of 100 pipes per combination of

pipe size and specified wall thickness.



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For ASTM A333M Pipe the requirements of Para 12.3 of ASTM A333/A333M shall be

followed.

6.2.3 Flattening Test Requirement (A333M Pipe Only)

The flattening test shall be carried out on the pipe as per the requirements of Para 19 of ASTM

A530/A530M.

6.3 Hydrostatic Tests

6.3.1 Hydrostatic Test Requirements

Test pressure for API 5L pipe shall be held for a minimum period of 15 seconds for all sizes

and grades of pipes.

The pressure for ASTM A333M Pipe shall be held for a minimum period of 5 seconds without

resultant leakage from the pipe.

6.3.2 Verification of Hydrostatic Test

The pressure gauge used for hydrostatic testing shall have a minimum range of 1.5 times and

maximum range of 4 times the test pressure. The pressure gauge shall be calibrated by means

of a "Dead Weight" tester only and record shall be maintained.

6.3.3 Test Pressure

The test pressure for all sizes and grades of API 5L pipe shall be such that hoop stress (fibre

stress) generated is at least 95% of SMYS, computed based on the formula mentioned in API

Spec 5 L Para 10.2.6.5

The test pressure for ASTM A333M pipe shall be as per Para 20.1 of ASTM A530/A530M.

6.4 Dimensional Testing

The measuring equipment requiring calibration or verification under the provisions of API

Spec 5L shall be calibrated with manual instruments at least once per operating shift (12 hours

maximum). Such calibration records shall be furnished to Purchaser's Representative on

request.

The calibration for testing of the ASTM A333M pipe shall be as per the provisions of Para

15.10 of ASTM A333/A333M.

6.5 Non Destructive Inspection

The Purchaser reserves the right to depute its Representative(s) to perform inspection and

witness tests in all phases of manufacturing and testing starting from steel making to finished

line pipe ready for shipment. Manufacturer shall comply with the provisions regarding

inspection notice, plant access, compliance and rejection mentioned in Appendix H of API

Spec 5L The Manufacturer shall give the Purchaser reasonable notice of the starting date of

normal production and the work schedule. Any action or omission on part of Purchaser's

Representative shall not relieve the Manufacturer of his responsibility and obligation to supply

material in strict accordance with this specification.

6.5.1 Qualification of Personnel

All personnel performing NDT activities shall be qualified in the technique applied, in

accordance with latest edition of ISO 11484 or ASNT No. ASNT-TC-1A or equivalent. All

NDT shall be performed in accordance with written procedures. These procedures shall have

prior approval of the Purchaser.



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Inspector Qualification

Acceptable qualification for NDT inspectors shall be as specified below:

(i) For UT

For UT, at least one level III qualified inspector shall be available to the mill for overall

supervision. A level II inspector is required for shift supervision, manual weld inspection

and calibration of all systems (both manual and automated).

(i) For all other NDT methods

Evaluation of indications: Level I, II, III inspector Supervision: Level II or Level III

inspector (in case evaluation is by Level I inspector)

6.5.2 Methods of Inspection

Location of NDT equipment in the manufacturer's facility shall be such that final inspection

shall be performed after hydro testing.

Pipe Ends Inspection

The full circumference of both ends of each pipe after bevelling shall be 100% ultrasonically

tested for laminations from inside over a circumferential band of at least 25 mm width.

Alternatively the pipe may be tested from outside prior to bevelling, in which case a band of at

least 50 mm wide shall be tested to include the eventual bevelled area.

Bevel Inspection

Bevel face of all pipes shall be inspected by magnetic particle method to detect defects.

6.5.3 Ultrasonic and Electromagnetic Inspection

6.5.3.1 Equipment

All automatic ultrasonic equipment shall have an alarm device, which continuously monitors

the effectiveness of the coupling. The equipment for the automatic inspection shall allow the

localization of both longitudinal and transverse defects corresponding to the signals exceeding

the acceptance limits of the reference standard. The equipment shall be fitted with a paint

spray or automatic marking device and alarm device for areas giving unacceptable ultrasonic

indications. All ultrasonic testing equipment shall be provided with recording device

6.5.3.2 Ultrasonic and Electromagnetic Inspection Reference Standards

Each reference standard (calibration pipe) shall have the same specified diameter and wall

thickness as specified for the production pipe being inspected and shall be of sufficient length

to permit calibration of ultrasonic inspection equipment at the speed to be used in normal

production. The reference standard (calibration pipe) shall also be of the same material, type

and have the same surface finish, made by the same pipe manufacturing process, from the

same heat, under the same manufacturing conditions and heat treatment as the pipe being

inspected. The reference indicators shall be as per API Spec 5L Annexure E Table 7.

For ASTM A333M Pipe the reference standards shall be as per ASTM A333/A333M.

The calibration shall be performed at following intervals:

a. At the beginning of each operating shift (12 hours maximum).

b. At least once during each operating shift (12 hours maximum).

c. Every time the running of the system gives rise to doubts on its efficiency.



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If during the above calibration verification, it is found that the equipment has not functioned

satisfactorily in the opinion of the Purchaser's Representative, all the pipes or skelp already

inspected after the previous verification shall be inspected again at Manufacturer's cost.

6.5.3.3 Acceptance limits

6.5.3.3.1 Pipe Body (API 5L Pipe Only)

Acceptance limit for material body examination shall be as per criteria laid down for

Acceptance level B4 of BS 5996: 1993 which is reproduced hereunder for ready reference:

1. No individual imperfection that does not exceed all of the following dimensions shall be

considered for population density assessment:

Area: 300 mm2, Length: 35 mm, Width: 8 mm. (The length is the dimension at right

angles to the scan track and the width is the dimension parallel to the scan track.)

2. Maximum area of any individual discontinuity shall not exceed 1000 mm2.

3. Maximum population density of imperfections smaller than the maximum permissible

imperfection size and larger than the minimum imperfection size per 1 m x 1 m square

shall not exceed 10.

4. Any imperfection exceeding 100 mm in length shall not be acceptable and any planar

imperfection not parallel to the plate surface is not acceptable.

Disposition of any defects shall be as per API Spec 5L Annexure C Para 2 or Para 3

Residual Magnetism Measurement Requirements e. The average of the four readings shall

not exceed 20 gauss and no one reading shall exceed 25 gauss when measured with Hall-

effect gauss meter. All residual magnetism measurements shall be recorded.

6.5.3.3.2 Pipe Body (A333M Pipe Only)

The evaluation of imperfections shall be as per the provisions of Para 15.11 of ASTM

A333/A333M.

6.6 Disposition of Pipe Containing Defects

The repaired area shall be 100% rechecked by magnetic particle or ultrasonic inspection to

ensure complete removal of defects. However for repair of cosmetic type of defects, MPI may

not be conducted if so directed by Purchaser's Representative on case to case basis. The pipes

having a thickness less than the minimum allowed in accordance with this specification, after

repair by grinding shall be treated for disposition in accordance with API Spec 5L Annexure C

Para 2 or Para 3.

6.7 Retests

6.7.1 Recheck of Chemical Analysis (API 5L Pipe Only)

Modalities of recheck analysis shall be as per API Spec. 5L as applicable to the lot being

tested. However, during individual testing, each pipe shall be fully analysed to meet the

requirements of Table 5 of API Spec 5L.

6.7.2 Charpy Retests (API 5L Pipe Only)

In the event that a set of Charpy test specimen fails to meet the acceptance criteria, the

manufacturer may elect to replace the lot of material involved or alternatively to test two more

lengths from that lot. If both the new tests meet the acceptance criteria, then all pipes in that

lot, with the exception of the original selected length, shall be considered to meet the

requirement.



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6.7.3 Mechanical Requirements Retest (ASTM A333M Pipe Only)

The modalities of retest shall be as per Para 16 of ASTM A530/A530M.

7 Marking

7.1 General

Marking specified in API Paragraphs and otherwise specified in the Purchase Order shall be in

English language and international System (SI) of units. Marking shall comply with Para 11 of

API Spec 5L and as modified in this specification.

For ASTM A333M pipe the marking shall be as per the requirements of Para 16 of ASTM

A333/A333M and Para 24 of ASTM A530/A530M.

8 Coating and Protection

8.1 Coatings

The pipe shall be supplied with a temporary external coating to provide protection as per API

Spec 5L Para 12.1.2. The coating shall be free of any trace of oil, stain, grease or paint. Bevel

ends shall be free of any coating.

9 Documents

9.1 Certification

Manufacturer shall furnish to Purchaser a certificate of compliance stating that the material

has been manufactured, sampled, tested, and inspected in accordance with this specification

and has been found to meet the requirements.

For the pipe manufactured as per ASTM A333/A333M, a Certified Test Report shall be

furnished as per the requirements of Para 21 of ASTM A530/A530M.

9.2 Retention of Records

In addition to the records indicated in API Spec 5L Para 13, the Manufacturer shall retain the

records of all additional tests\Retest and calibration records mentioned in this specification

including the hard copy records of ultrasonic testing carried out on pipe/skelp as well as pipe

ends.

9.3 Production Report (API 5L Pipe Only)

The Manufacturer shall provide six copies of production report in English language indicating

at least the following for each pipe. International System of units (SI) shall be adopted.

- Pipe number

- Heat number from which pipe is produced

- Pipe length and weight.

- Pipe grade

The Manufacturer shall provide six copies of acceptance certificates which shall include the

results of all tests required as per this specification and performed on delivered material giving

details of, but not limited to, the following:



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- All test certificates as per Para 13 of API Spec 5L.

- Certified reports of dimensional, workmanship and defects inspection.

- Data on test failures, rejected heats/lots, etc.

- All other reports and results required as per this specification.

The certificates shall be valid only when signed by the Purchaser's Representative. Only those

pipes, which have been certified by the Purchaser's Representative, shall be dispatched from

the pipe mill.

9.4 Line Pipe Traceability Data (API 5L Pipe Only)

The manufacturer shall establish and follow procedures for maintaining heat and lot identity

of all pipes as per Para 8.13.2 of API Spec 5L.

10 Inspection of Field Tests & Warranty

Purchaser shall be reimbursed by Manufacturer for any pipe furnished on this order that fails

under field hydrostatic test if such failure is caused by a material/manufacturing defect in the

pipe. The reimbursement cost shall include pipe, labour and equipment rental for finding,

excavating, cutting out and installation of replaced pipe in position. The field hydrostatic test

pressure will not exceed that value which will cause a calculated hoop stress equivalent to 95

percent of specified minimum yield strength. In case Manufacturer so desires, he will be

advised at least two weeks in advance so that his Representative may witness the hydrostatic

test in field, however, the testing and leak (if any) finding and repair operation shall not he

postponed because of absence of the Manufacturer's Representative.

11 Guarantee

The supplies shall be fully guaranteed against any manufacturing defects/poor

workmanship/inferior design or quality for a period of 12 months from the date of

commissioning or 18 months from the date of last delivery, whichever is earlier. Defects

observed during this period shall be rectified or the defective items replaced by the

manufacturer at his cost.

12 Pipe Loading

The manufacturer shall prepare & follow loading diagrams that detail how the pipe is to be

arranged, protected and secured on trucks, railcars, barges or ocean going vessels and other

requirements as mentioned in API Spec 5L Para 14 and ASTM A700. The manufacturer shall

repair any damage to the pipe prior to loading onboard the vessel.



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Appendix-A: - Purchaser Inspection

Rejection

If Purchaser Representative rejects pipes repeatedly for any recurring cause, this shall be

adequate reason to refuse final inspection of subsequent pipes until the cause has been

investigated and corrective action taken by the Manufacture



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Appendix-B: - Marking Instructions for API Licensees

1.1 General

1.1.1 Marking shall also include API monogram, Purchase Order number, item number, wall

thickness (mm), pipe number, heat number and weight.

1.2 Location of Markings

Marking shall be paint stencilled on length of the pipe at right angles to the pipe axis. Stencil

marking shall be placed on the inside surface length except that on pipe size smaller than 16,

marking may either be placed on inside or outside. Paint used for stencil marking shall

withstand a temperature up to 250degC expected to be experienced during further external

anti-corrosion coating operations of line pipe by coating applicator.

1.3 Sequence of Marking

1.4 Specified Dimensions

Actual pipe weight in kg shall also be marked.

1.5 Grade and Class

A colour code band shall be marked on inside surface of finished pipe for identification of

pipes of same diameter but different wall thickness, as indicated in the Purchase Order. The

colour code band shall be 50 mm wide and shall be marked at a distance of 150 mm from the

pipe ends.

1.6 Length

Actual length shall be marked in metres.

1.7 Die Stamping

Additionally, the pipe number shall be placed by cold rolling or low stress dot marking on the

outside surface of the pipe at an approximate distance of 50 mm from both ends. In case of

non-availability of either cold rolling or low stress dot marking facility in pipe mill, an

alternative marking scheme of a permanent nature may be proposed by the Manufacturer.



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Appendix-C: - Table of Compliance.

The Manufacturer shall submit the complete Table of Compliance, bellow table, as part of the

technical offer. The Manufacturer shall confirm compliance with each clause of this

specification by writing “yes” in the column headed “Compliance”. Where the manufacturer is

unable to comply with a particular clause, the Manufacturer shall write “no” in the column

headed “Compliance” and shall describe the deviation with justification in the appropriate

adjacent cells, which may be extended on separate pages as required.

Ref. Clause No. Compliance

(yes/no)

Deviation Justification/Remarks



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Appendix-D: - Basic Pipeline Design Data.



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Item No. 1

Line pipe: 12”, API 5L Grade B, SMLS, PSL 2 (Externally 3LPE coated) (Wall Thickness - 8.4

mm)

Design Code ASME B31.4 / OISD 214

Nominal Diameter 12”

Medium LPG

Design Pressure 51.1 Barg

Design Factor 0.72

Maximum Design Temperature +65°C

Minimum Design Temperature -29°C

Design Life 25 Years

Pipeline Length 4700m

Material of Construction CS, API 5L Grade B Seamless, PSL2

Corrosion Allowance 1.6mm

Line pipe Wall Thickness 8.4mm

Construction Philosophy Buried

Pressure Temperature Rating 300#

Pipeline External Coating 3LPE (In accordance with specification No. 256324-

500-SP-PPL-013) – Annexure 3

Pipeline Internal Lining No.

Special Requirement Impact Testing at (-)29°C



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Item No. 2

Line pipe: 6”, API 5L Grade B, SMLS, PSL 2 (Externally 3LPE coated) (Wall Thickness - 7.1

mm)



Medium Auto LPG


Design Factor 0.72




Pipeline Length 4200 m








Pipeline Internal Lining No




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Item No. 3

Line pipe: 6”, ASTM A333M Gr-6, SMLS (Externally 3LPE coated) (Wall Thickness - 7.1 mm)

Design Code ASME B31.4/OISD 141


Medium Propylene


Design Factor 0.72





Material of Construction LTCS, ASTM A333M Grade 6 Seamless











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Item No. 4

Line pipe: 12”, API 5L Grade B, SMLS, PSL 2 (Bare) (Wall Thickness - 8.4 mm)



Medium LPG


Design Factor 0.72




Pipeline Length 600m






Pipeline External Coating No





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Item No. 5

Line pipe: 6”, API 5L Grade B, SMLS, PSL 2 (Bare) (Wall Thickness - 7.1 mm)



Medium Auto LPG


Design Factor 0.72















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Item No. 6

Line pipe: 6”, ASTM A333M Gr-6, SMLS (Bare) (Wall Thickness - 7.1 mm)

Design Code ASME B31.4/OISD 141


Medium Propylene


Design Factor 0.72





Material of Construction LTCS, ASTM A333M Grade 6 Seamless










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Appendix–E:- Requisition of Engineering Documents (RED Form)

Owner/Purchaser’s Office Consultant’s Office

HINDUSTAN PETROLEUM CORPORATION LTD.

Visakha Dispatch Station, VR-ATP Area, Naval Base Post,

Visakhapatnam – 530 014, Andhra Pradesh

Mott MacDonald Consultants (India) Pvt. Ltd

Kothari House, CTS No. 185 Off Andheri – Kurla Road, Andheri (East)

Mumbai 400 059, India ; Tel 09122 3083 5000

DRAWINGS Required number for TIMING FOR SUBMITTAL

Approval Final issue - for approval 2 weeks after order date

Approval drawings / Final drawings to be submitted

under cover of an ADS form / FDS form respectively

Transp-

arencies

Prints Disk Prints - final issue 2 weeks after approval date

Documents shall be submitted to:

Vendor Doc. Schedule 4 1 3

Production Schedule 4 1 3

Manufacturing Procedure Specification 4 1 3

Quality Control Plan satisfying ISO 9000 requirements 4 1 3

Welding Procedure Specification 4 1 3

and Qualification Record 4 1 3

Progress Report 4 --- --- Monthly Once.

Manufacturing, inspection & testing sequence plan 4 --- ---

TEST AND INSPECTION DOCUMENTS Disk Prints

Documents to be submitted under transmittal Documents shall be submitted to:

Manufacturing report 1 3

All Material certificates in accordance with API 5L and ASTM A530/A530M

to: ISO 10474 - 3.1B

1 3

Inspection Reports/Documentation in accordance with API 5L and ASTM

A530/A530M

1 3 Purchasing Office via courier service within 4 weeks

of relevant test/inspection.

NDT Reports and Certificates to : ISO 10474-3.1B 1 3

Hydrostatic Test Certificates to : ISO 10474-3.1B 1 3

Heat treatment graphs and Certificates 1 3

Calibration certificates of Instruments 1 3

OPERATING DOCUMENTS Purchasing Office via courier service not later than

time of dispatch of equipment.

--- ---

--- ---

--- ---

ADDITIONAL REQUIREMENTS:

1. Referenced standards / codes shall be the latest issue unless otherwise stated.

Invoice must certify that the drawings and engineering documents specified

above have been dispatched to all parties concerned.

Any deviation from the timing for submittal of documents shall be notified to

the Approval / Distribution Offices by fax or E mail.

Shop fabrication shall not be started before the required approval drawings

have been released for construction by the party concerned, unless otherwise

stated on the "Approval Drawing Specification".

Each document shall bear the item / tag and order reference number and be

dispatched by air mail, unless other instructions are stated on the RED.

Units / dimensions to be used on Engineering documents shall be SI.

The documents shall be in English. Description on drawings and similar

documents may be in other languages provided English translations are

also given.

Drawings and documents shall be suitable for microfilming and comply

with accepted national or international standards for the preparation of

technical drawings. Only the following standard sizes should be used: A4,

A3, A2, A1.

SPECIFICATION FOR LINE PIPE...

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