ONshore-Technical Analyses-LINE PIPE SPEC

7/31/2019 ONshore-Technical Analyses-LINE PIPE SPEC

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SPECIFICATION FOR LINEPIPE SPECIFICATION :

item OD (in) OD (mm) WT

Seamless 10 273.0 1

Total

Section Request

Seamless Pipe/ DNV SMLS 360 for onshore applications

5.0 Pipe Manufacture

5.1 General REQUIREMENTS

Weldability Tests (Appendix B ) or alternative proposal

5.2 Process of manufacture smls, normalised

5.3 Billet Manufacture

5.4 Pipe Manufacture

5.9.10

for pipe surface conditions

5.5 MPS

5.6 MPQ

5.6.1

i) NDT: UT or EMI for entire length, for L & T defects, and laminations

chemical analysis

The chemical composition shall be in accordance with DNV OS F101, Sect. 7, Table 7-3.

C max. % 0.16

Si max. % 0.45

Mn max. % 1.65

P max. % 0.020

S max. % 0.01

V max. % 0.08

Nb max. % 0.05

Ti max. % 0.04

Al max. % 0.060

N max. % 0.012

Al/N 2:1

V + Nb + Ti shall not exceed 0.15%

Cu max % 0.50

Ni max % 0.50

Cr max. % 0.50

Mo max. % 0.50

B max. % 0.0005

CE (IIW) 0.42

Pcm 0.22


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For SMLS pipe, Pcm is increased by 0.03, up to a maximum of 0.25

NOTES :

1 For each reduction of 0.01% below the specified maximum for carbon, an increase of 0.05%above the specified maximum for manganese is permissible, up to maximum increase of 0.20%.

iii) tensile

Tensile Properties

SMYS MIN

MAX

UTS MIN

MAX

SMYS/UTS MAX

iv) Charpy

Charpy test shall be as per table 7.5 of DNV OS-F101

Charpy V-notch energy (KVT), as per Table 7-5: minimum average/ind.values: 42/35J

note 1) the required (KVL)values shall be 50% higher than required KVT values.

Charpy temperature as per Specification, To=Tmin-10degCgrain size shall be greater than or equal to 7 acc. to ASTM E112

v) area transition curves

vi) microstructure

vii) pipe WT shall be measured UT

5.6.2 Weldability Test

5.6.3 Report of MPQ

5.6.4 Test failure

5.7 Chemical Properties

5.8 MECHANICAL PROPERTIES : Tensile Properties & Charpy test

5.9 DIMENSIONal & weight reqnts as per DNV & Appendix D

5.9.1Diameter i) & ii)

Diameter tolerance


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5.9.2 WT tolerance (Appendix D)

WT tolerance as per table 7-18: +/-0.125t

5.9.3 Weight -3.5% / +10% of nominal weight

5.9.4 Out-of-Roundness at the pipe ends 2.7m

5.9.5 Length 11.9-12.5m

5.9.6 Straightnessas per , a e - ec

5.9.7 Pipe End Squareness

Pipe End Squarenessas per DNV, table 7-19 /Sec 7

5.9.8 Pipe End Bevel 30 deg (-0/+5deg); root face:1.6mm +/-0.8m

5.9.9 Bulges, dents and flat areas

5.10 Surface condition

imperfections having a depth greater than 5% of the specified WT shall be considered unacceptable

6.0 Mill Hydrostating Testing As per DNV OS F10, Section 7 Subsection E

112.5 bar requested by table 3-3/operational

7 INSPECTION & TESTING

7.2 Production Test & inspections

7.2.1 Destructive test

7.2.2 Dim. & Non-Destructive inspections

i) clause 7.2.2 a1)

clause 7.2.2 a2) ID; WT; OOR shall be checked

clause 7.2.2 a3)

UTclause 7.2.2 a4) EMI

clause 7.2.2 a5) MPI on bevel surfaces

ii acceptance criteria: noth 10 for both, inside & outside

Residual magnetism: shall not exceed 25 Gauss

7.3 Mill Certificates 3.2 as per EN 10204

8 Repair of defects

9 Marking

10 Protection of bevels

11 Handling, transport & storage

12 Documentation

13 Storage of mechanical tets specimens

14 P.H.S

Appendix A


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Appendix B

Appendix C LP Data sheet

Date:05.01.2012

Issued by,

Eng. Rosianu Gabriela


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AMTP comments (confirm/ok or no) Justification for Deviation

ion+ DNV OS F101/2010 Section 7 OK

NOTED

we confirm the requirements of chemical composition of the steel and , in

particular, the limiting value of Pcm which facilitate weldability.Pcm= (0.25-

0.01) max = 0.24% max

no, quenched & tempered

ok

ok

ok, with deviation to the imperfection depth of 5%.imperfections having a depth greater than 10%of

the specified WT shall be considered unacceptable

ok

we confirm UT for entire length, for L & T defects; UT for laminations for

full body only; we are not able to confirm detection of laminations for entire

lgth of pipe ends (350mm) not scanned by automatic technique; we propose

manual UT for detection of laminations for full circumf. of both ends for a

dist. ofat least 50mm .

ok

ok

ok

ok

ok

ok

ok

ok

ok

ok

ok

ok

ok

ok

ok

ok

ok

ok

N/A

OK (carbon content 0.12%)


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we confirm 0.24%max

noted

ok,

ok

ok

ok,

ok,

no! we confirm 0.93. As per API, the request is aplicable for D >323.9mm

ok, see our comment to 5.8

ok

ok

we confirm "-30C" ( as per data sheet Tmin is -20degC)ok

ok,

ok

ok

see our comment to 5.1

ok

ok

ok

ok, see our comments to 5.6.1

no, ID & Out of Roundness shall be within tolerances stated for OD & WT

no, we confirm as per API:

pipe body 0.5 mm or 0.0075D , whichever is

greater

pipe end 0.5 mm or 0.005D ,whichever is

greater , but maxim 1.6 mm


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no, we confirm as per API: -0.125t/+0.150t

ok

we confirm as per API: 0.015D

we confirm 100%: 10-11.8M, Due to Technological reason

we confirm as per API Due to Technological reason

ok

ok

ok

ok

ok, taking into account below deviation

no, imperfections having a depth greater than 10% of the specified WT shall

be considered unacceptable

Subsection E of Section 7 of DNV OS F10 is N/A

We confirm Hydrostatic Testing Pressure as per API

ok

ok

ok, taking into account above our comments/deviations

ok

ok

ok, but OD not ID

ok, taking into account our deviations mentioned above to 5.6.1

No, we do not confirm EMI as an additional test to UT

ok

ok, but taking into account deviation to clause 5.10 & we confirm

imperfection length 50mm instead of 25mm

ok

ok

ok

ok

ok

ok

ok

ok

N/A

noted


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we confirm the requirements of chemical composition of the steel and , in

particular, the limiting value of Pcm which facilitate weldability.Pcm= (0.25-

0.01) max = 0.24% max

ok, except coating & standard lgth: we offer bare pipes, with individual lgth

mentioned above

Approved by ,

Tech. Dpt.

Documents

ONshore-Technical Analyses-LINE PIPE SPEC