WELDING INSPECTION WELDING INSPECTION

COURSECOURSE

Apr 2010Apr 2010

M.B.BEHBAHANIM.B.BEHBAHANI

NDT EVEL IIINDT EVEL III

(RT,UT,VT,PT,MT)(RT,UT,VT,PT,MT)

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Course TopicsCourse Topics Roles and duties of a Roles and duties of a

Welding InspectorWelding Inspector

Welding termsWelding terms Joint designJoint design Welding symbolsWelding symbols Welding processesWelding processes Welding consumablesWelding consumables Welding defectsWelding defects Crack mechanismCrack mechanism Steel propertiesSteel properties

Mechanical TestingMechanical Testing Post weld Heat Post weld Heat

treatmentstreatments

NonNon--destructive destructive testingtesting

Codes and standardsCodes and standards

Exam after the course is completedExam after the course is completed

Course AssessmentCourse Assessment

Theory part Theory part : Specific welding technology. 40 multi: Specific welding technology. 40 multi-- choice questionschoice questions 1.5 Hour1.5 Hour

2 Hour2 Hour

Practical part Practical part : Inspection of a plate butt weld : Inspection of a plate butt weld

((your chosen code e.g API 1104)your chosen code e.g API 1104)

SpecificationSpecification: 20 questions:( according to API : 20 questions:( according to API 1104 )1104 )

ExaminationExaminationExamination

1.5 Hour1.5 Hour

80% pass mark

For every one to be awarded the certificate For every one to be awarded the certificate according to SNT.TC1.Aaccording to SNT.TC1.A

Notification of Examination ResultsNotification of Examination Results

3 years3 years

CV assessmentCV assessment

RenewalsRenewals

Welding Inspection

Welding Inspection

In the fabrication industry it is common practice to employ Welding Inspectors to ensure that fabricated items meet minimum specified requirements

Welding InspectorWelding InspectorWelding Inspectors shall be have :

Appropriate abilities

Personal qualities

Job knowledge in order to have confidence in

their work

Posses a minimum level of relevant experience

When do I carry out inspectionsWhen do I carry out inspections

How do I carry out inspections?How do I carry out inspections?

What do I look for?What do I look for?

What equipment do I need?What equipment do I need?

How do I interpret the code or standard requirements?How do I interpret the code or standard requirements?

What is the nature of the product?What is the nature of the product?

What operating conditions will be present?What operating conditions will be present?

What is the quality of welding required?What is the quality of welding required?

Visual Inspection ProceduresVisual Inspection ProceduresVisual Inspection ProceduresImportant things to considerImportant things to consider

Duties of the Welding InspectorDuties of the Welding InspectorWhat are the Duties of the Welding InspectorWhat are the Duties of the Welding Inspector

When should these duties be carried outWhen should these duties be carried out

BeforeBefore

DuringDuring

AfterAfter

Welding ChecklistWelding Checklist

DocumentationDocumentation

MaterialsMaterials

Weld preparationsWeld preparations

Fit up for weldingFit up for welding

Welding equipmentWelding equipment

Before Welding CommencesBefore Welding Commences

Before Welding CommencesBefore Welding Commences

Documentation:

Check specification. (Year and revision)

Check drawings. (Correct revisions)

Check welding procedure specifications and welder approvals

Validate certificates of calibration. (Welding equipment & inspection instruments)

Check material and consumable certification

Before Welding CommencesBefore Welding Commences

Welding Process and ancillaries:

Check welding equipment and all related ancillaries. (Cables, regulators, ovens, quivers etc.)

Incoming Consumables:

Check pipe/plate and welding consumables for size, condition, specification and storage

Before Welding CommencesBefore Welding CommencesMarking out preparation & set up:

Check the:

Correct method of cutting weld preparations. (Pre- Heat for thermal cutting if applicable)

Correct preparation. (Relevant bevel angles, root face, root gap, root radius, land, etc.)

Correct pre-welding distortion control. (Tacking, bridging, jigs, line up clamps, etc.)

Correct level and method of pre heat applied prior to tack welding

All tack welding to be monitored and inspected.

During welding

Weather conditions. (Mainly for site work, welding is generally halted when inclement)

Pre-heat values. (Heating method, location and control method)

In-process distortion control. (Sequence or balanced welding)

Consumable control. (Specification, size, condition, and any special treatments)

Welding processes and all related variable parameters. (Voltage, amperage, travel speed, etc)

During welding

Welding and/or purging gases. (Type, pressure/flow and control method)

Welding conditions for root run/hot pass and all subsequent run, and inter-run cleaning.

Minimum and/or maximum inter-pass temperatures. (Temperature and control method)

Check Compliance with all other variables stated on the approved WPS

After welding

Carry out visual inspection of the welded joint. (Including dimensional aspects)

Check and monitor NDT requirements. (Method, qualification of operator, execution)

Identify repairs from assessment of visual or NDT reports. (Refer to repairs)

Post weld heat treatment (PWHT) (Heating method and temperature recording system)

Re-inspect with NDT after PWHT. (If applicable ,for alloy steel)

Hydrostatic test procedures.

Repairs

Excavation procedure. (Approval and execution)

Approval of the NDT procedures (For assessment of complete defect removal)

Repair procedure. (Approval of re-welding procedures and welder approval)

Execution of approved re-welding procedure. (Compliance with repair procedure)

Re-inspect the repair area with visual inspection and approved NDT method

Submission of inspection reports, and all related documents to the Q/C department.

The main responsibilities of a Welding Inspector

To observe all relevant actions related to weld quality throughout production. This will include a final visual inspection of the weld area.

The main responsibilities of a Welding Inspector

To record, or log all production inspection points relevant to quality, including a final map and report sheet showing all identified welding imperfections.

The main responsibilities of a Welding Inspector

To compare all reported information with the acceptance levels/criteria and clauses within the applied application standard.

WELDING INSPECTION COURSE M.B.BEHBAHANICourse TopicsCourse AssessmentExaminationNotification of Examination ResultsRenewalsSlide Number 8Welding InspectionWelding InspectorSlide Number 11Duties of the Welding InspectorWelding ChecklistBefore Welding CommencesBefore Welding CommencesBefore Welding CommencesDuring weldingDuring weldingAfter weldingRepairsThe main responsibilities of a Welding Inspector The main responsibilities of a Welding InspectorThe main responsibilities of a Welding Inspector