• تهران، میدان ولیعصر (عج)، مرکز تجارت ایرانیان، طبقه 8، واحد 17

Course Duration: ۲۰ hr

EXAMINATIONS

General-

Specific-

Practical-

Candidates must score a minimum of 70 % in each test and a minimum of 80% average for all the three tests

 

Course Outline

MODULE 1: INTRODUCTION

MODULE 2: PRINCIPLES

Purpose of Liquid Penetrant Testing

Physical Principles

Wetting Ability and Contact Angle

Surface Tension

Capillary Action

Viscosity

Reversed Capillary Action

Visibility of Indication

Categories of Test Processes

Types of Dye: Type I (Fluorescent) and Type II (Visible)

Methods of Removal of excess Penetrant including Water Washable, Emulsifiers and Solvent Removable

Sensitivity Levels – ½, ۱, ۲, ۳, ۴

Selection of Process 2

Limitations of Penetrant Testing

MODULE 3: BASIC STEPS

This module covers the basic steps involved in the following processes

Method A – Water Washable

Method B – Lipophilic Emulsifier

Method C – Solvent Removable

Method D – Hydrophilic Emulsifier

MODULE 4: SURFACE PREPARATION AND PRECLEANING

Choice of Cleaning Method

Different Cleaning Methods including Detergent, Solvent, Alkaline, Steam, Ultrasonic cleaning, Vapor Degreasing

MODULE 5: APPLICATION AND REMOVAL OF PENETRANTS

Selection of Penetrant Materials

o Cleaners

o Penetrant

o Developer

o Selection based on family

Application of Penetrant

Standard Temperature Limits

Dwell time

Drying

Drying Parameters

Drying Time Limits

Application of Developers

Types of Developers

o Aqueous

o Non-Aqueous

Developing Time

Fluorescent Inspection

o Black Light Warm Up Time

o Minimum intensity and light meter

o Visual Adaptation

Visual Inspection

o Minimum light intensity and light meter

Post Cleaning

Limitation of Penetrant Testing

MODULE 6: INTERPRETATION

Interpretation of Test Results

Flow Chart for Interpretation

True, False, Relevant and Non Relevant indications

Categories of Indications: – Rounded and Linear 3

Evaluation of Indications

ASTM E-433 Reference Photographs of Indications types

MODULE 7: CODES & STANDARDS (Specific Training)

Codes

o ASME Section V, Article 6

o ASME Section VIII, Appendix 8 (Accept/Reject Criteria)

Standards

ASTM E-165 Standard Practice for Liquid Penetrant Examination

ASTM E-1209 Fluorescent Water Washable Liquid Penetrant Testing

Other codes and standards can be discussed at the request of the students. Please make such requests at time of registration

MODULE 8: PRACTICAL TRAINING

Test on Flawed Samples Visible

o Solvent Removable

Fluorescent

o Water Washable

o Solvent Removable