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2009 www.wintech-

WINTECHGLOBALMini JIP

Sept-09 Contact :[email protected]
mailto:[email protected]:[email protected]

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2009 www.wintech-global.net

DATE

TAKE

SLIDE13 1

PRODUCTION

SUBJECT

Wintech Global

Mini JIP

16/09/09

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54321 2009 www.wintech-global.net

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Once upon a time the microcracks

Introduction

1

ManagementPhase FabricationPhase

4

Mini JIPContract info

5

Troubleshootingphase

2 3

In the second half of 2007, various major vendors have

reported cases of cracking in welds that happened duringthe fabrication of heavy wall pressure vessels:

The indications were planar, located in the weld and transverseto the weld axis.

The indications were uniformly distributed along the weld andsometimes in clusters.

The typical dimensions were 6 mm average length (20 mm max)

and 3 mm max depth.

Intergranular cracking occurred during ISR orPWHT treatment in the weld zone of V-modified Low Alloyed Steel (2Cr1MoV).

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Influence of elements by built up K factorProblem ofreliability on

Gleeble test

Introduction ofGleeble test hot tensile test.(RoA threshold 23%)

Found out incriminated elements. (Pb, Bi, Sb)

Permit

Various MajorVendors

Encountered micro-cracksin the weld after

ISR/PWHT

From Paper ASME PVP2009-78144 by ArcelorMittal (Industeel)

Introduction

1


4


5


2 3

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Industrial ManagementPhase

This program is urgently needed to prevent a recurrence of the2008 cracking problems which brought reactor fabrication at multiplemajor shops to a virtual standstill for months

from Cathy SHARGAY, Fluor Corp.

Scope:Build and propose a

"Standard reliable testing procedure for V-modified 2 1/4 Cr-1Mo-V welding quality control and acceptance

Mini-JIPManaging coordinator:

Mechanical point of view

(ArcelorMittal - Industeel)

B. SZYMKOWIAK

(Wintech Global)

Chemistry point of view

(University of Milan)

Introduction

1


4


5


2 3

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Welding with same wire & flux

Optimize Suitable and Reliable

chemical analysis.

Information:

Impurities content in the weld

Welded Coupons with [Pb, Bi, Sb]

Chemical analysis

PWHT

Impurities

[ Pb, Bi, Sb ]

Information:

Ductility of the weld at high temperature

Standard Reliable Mechanical test

Impurities content vs. HT ductility

Mechanical approach

University of MilanArcelorMittal - Industeel

Optimize Suitable and Reliable

mechanical test ISR

DHT

CarbidesPrecipitation

MaterialBehavior

WeldingParameters

Grains Size

Geometry

Mini-JIP result:

Mini JIP

results

Testing procedure

Mini-JIP input

Introduction

1


4


5


2 3

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Benchmarking

LAB 1

LAB 2

LAB 3

Testing procedure

Specifications &Standard reliable

testingprocedures

2.1/4Cr 1 Mo V Material with high performance Unforgiving material

Need for proper and standard specification for safe and reliable use!

Thresholdimpurities

concentration

by Flux Suppliersor Vendors

Material

Certificate

MechanicalQualification

Test

End user

Guaranty

by Vendors

Introduction

1


4


5


2 3

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Fabrication Phase

Qu

alitycont ro

lofwelding

StandardMechanical Test

Metal

Plate: SA 542 grD 4a

Forge Rings: SA 336gr 22V

Filler Metal

Flux

SAW

Welding

[Pb, Bi, Sb]

ChemistryAnalysis

Impuritieslevel

Mechanicaltest

DHT UT ISR

TOFD

UT High

Sensible

Micro CracksX

NoCracks

Certificate

Heat treatmentNDT

Heat treatment

Avoid Cracks problem

TOFD

Specific UTAnalysis

Ultimate Control

Qualitycontrol

Chemistryanalysis

PQR

Part of Procedure

Qualification TestRecords

HT Ductilityquality control

Specified impurities level TOFD RecommendedPractice

Industrial

RecommendedPractice

Introduction

1


4


5


2 3

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Mini JIP info

MINI-JIP work could start immediately after getting the

needed signatures from Participants:

Potential EFFECTIVE Date

Preliminary program and planning

Potential KOM Date

One year duration

Introduction

1


4


5


2 3

targeted 12 sponsors

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One TEAM:

One GOAL:

One GROUND:

intech Global / ArcelorMittal / Unimi

Standard Testing Procedure

RELIABILTY as your ENERGY

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We remain at your entire disposalto go further into investigation on

the same and envisage a nextformal meeting between all mini

JIP potential sponsors.

Author: Alberto SCOLARI

Thanks for yourattention

Contact :[email protected]
mailto:[email protected]:[email protected]

Documents

MINI JP