Sample PT procedure.pdf

7/25/2019 Sample PT procedure.pdf

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L E S E R W O R K S S T A N D A R D L W N 3 3 1 - 0 4 - E N

Procedure for penetrant testing page 1

continues on page 2

L E S E R processed: Sa edition: 14.08.07

GmbH & Co. KG approved: refer to ÄM 103600 replaces edition: 00.00.00

Table of Contents

SUMMARY ........................................................................................................................................................ 2

1. GENERAL ................................................................................................................................................. 2

2. APPLICATION .......................................................................................................................................... 2

3. PURPOSE, DEFINITION........................................................................................................................... 2

4. TEST REFERENCES................................................................................................................................ 2

5. TEST PROCEDURES AT LESER ............................................................................................................ 3

5.1 TEST INSTRUCTIONS................................................................................................................................ 3 5.2 TEST DEPTH ........................................................................................................................................... 3 5.3 TEST PROCEDURE................................................................................................................................... 3

5.4 TESTING FACILITY ................................................................................................................................... 3 5.5 TEST MEDIA ............................................................................................................................................ 3 5.5.1 Penetrant systems, description.................................................................................................... 3 5.5.2 Test media ................................................................................................................................... 4 5.5.3 Sensitivity..................................................................................................................................... 4 5.5.4 Compatibility of the test media, compatibility with the test object................................................ 4

5.6 TEST PROCEDURE................................................................................................................................... 4 5.6.1 Preparation and pre-treatment..................................................................................................... 4 5.6.2 Application of the penetrant agent............................................................................................... 5 5.6.3 Interim cleaning............................................................................................................................ 5 5.6.4 Development process .................................................................................................................. 5 5.6.5 Inspection, viewing conditions in accordance with DIN EN ISO 3059......................................... 6 5.6.6 Final cleaning and protective measures ...................................................................................... 6

6. ACCEPTANCE CRITERIA (EVALUATION OF THE INDICATIONS)...................................................... 6

7. QUALIFICATION OF THE TEST PERSONNEL....................................................................................... 6

8. DOCUMENTATION, OPTION CODE ....................................................................................................... 7

9. STANDARD REFERENCES..................................................................................................................... 7





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Summary

Purpose of the penetrant testing is to detect the presence of fissures/cracks in the surface (surfacetest) and in the surfaces of adjacent areas.

The penetrant testing will not be applied in case of:

− Ferromagnetic iron and steel castings

The issue of a certificate that the test has been carried out can be ordered with:

Option code Certificate Remarks

H03LESER CGA (Certificate for Global Application) – Inspectioncertificate 3.1 according to DIN EN 10204

M03Inspection certificate 3.1 acc. to DIN EN 10204: Dyepenetrant testing

optionally

M21Inspection certificate 3.1 acc. to DIN EN 10204: Fluorescent

penetrant testing

optionally

1. General

This LWN will list the standard requirements and describe the procedure during the penetranttesting at LESER and its documentation.

2. Application

At LESER the penetrant examination will be applied in case of metal and non-metal materials likecastings, forgings, welding seams, and ceramics.

3. Purpose, defini tion

The penetrant testing belongs to the non-destructive tests and is a procedure to detect surfaceflaws like cracks, overlappings, laps, pores and binding flaws that are open in direction of thetesting surface.The principle of the penetrant testing procedure is that a penetrant agent, due to its specificcharacteristics tends to spread optimally on a surface and will simultaneously penetrate into anyexisting surface flaws.The superfluous penetrant agent is removed from the surface and the developer is applied. Thedeveloper takes up the penetrant, in the flaws remaining penetrant agent and this will result in aclearly visible and amplified indication of flaws up to the μm measuring area.

4. Test references

The following standards were included at LESER for the penetrant testing:

AD 2000-Merkblatt A4, chapter 6, Tests before operation,Section.6.1 The following tests are required for the bodies of component parts:

6.1 (5) non-destructive test of products for bodies of component parts and ofwelding seams at pressure bearing walls and ...

ASME Code, Section VIII UG -136 Minimum Requirements for Pressure Relief ValvesUG-136 (f) Welding and other requirements. All welding, brazing,heat treatment, and non-destructive testing used in the construction ofbodies, bonnets and yokes shall be performed in accordance with the

applicable requirements of this division.





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EN 571-1 Non-destructive testing – penetrant testing - Part 1- General foundationsDIN EN ISO 3452 Non-destructive testing - penetrant testingEN 1371 Founding - penetrant testingDIN 1690 Technical delivery conditions for castings made of metal materials

ASME Code Section V, Non-destructive Examination Article 6 Liquid Penetrant Examination

ASME B 16.34 Valves-Flanged, Threaded, and Welding EndMandatory Appendices III - Liquid Penetrant Examination:Procedure and Acceptance Standards

LWN 221-04 Penetrant testing, testing at LESER

5. Test procedures at LESER

5.1 Test instructions

The penetrant testing has to be carried out in accordance with DIN EN ISO 571-1 according toa written test instruction. This specification will determine the test parameters in such a way

that the test can be repeated in same manner.

5.2 Test depth

The penetrant testing is carried out at LESER in accordance with testing schedule.

5.3 Test procedure

The testing system carried out at LESER is realised by using two methods: – Fluorescent penetrant testing (penetrating) – Dye penetrant testing (red and white test)

5.4 Testing facility

The specifications stipulated for LESER used penetrant test devices comply with DIN EN ISO3452-4.The fluorescent penetrant testing (penetrating) is carried out in a HELLING penetrant facility.The dye penetrant testing (red and white test) is carried out on a special testing table.

5.5 Test media

5.5.1 Penetrant systems, description

A penetrant system is understood to be a combination of the following test media: penetrant agent,interim cleaning agent and developer.There are different testing systems for penetrant testing. You may only use DIN EN ISO 3452-3

approved and sample tested penetrant systems.The approved penetrant system to be used for penetrant testing is assigned a description statingthe type, the procedure and the kind of test media and a number for the sensitivity class.

Two testing systems are carried out at LESER:- Brief description: EN 571/1 I A- a, for fluorescent penetrant testing (penetrant facility)- Brief description: EN 571/1 II A – d, for dye penetrant testing, so-called red and white test.

This is shown in table 1.





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5.5.2 Test media

The test media shown in table 1 is used at LESER.

Penetrant agent Interim cleaning agent DeveloperPenetrant

testing Type Description Procedure Description Type Description

Fluorescentpenetrant testing(penetrating)

I Fluorescentpenetrant agent:

MET- L - CheckPenetrant HM 405

A Waterorsolvent basedcleaning agent:MET-L-Checkspecial cleaningagent NPU

a Dry developer

Met-L-CheckDeveloper D-72/80

Dyepenetrant testing

II Dye penetrantagent

MET- L –CheckPenetrant DyeVP30

A Wateror

solvent basedcleaning agent:MET-L-Checkspecial cleaningagent NPU

d Wet developeron solvent basis

MET-L-CheckDeveloper D 70

Table 1: Test media used at LESER

5.5.3 Sensitivity

The sensitivity class of the in chapter 5.5.1 stated penetrant system has been determined using thecalibration block 1 in accordance with DIN EN ISO 3452-3.

The determined class is only valid for the sample testing approved penetrant system.

5.5.4 Compatibility of the test media, compatibility with the test object

The test media has to be compatible with the materials of the parts to be tested and its final use.The test media of a system has to be compatible with each other.Penetrant agents of different manufacturers may not be mixed when filling the facility. Escapedpenetrant agent may not be replaced by penetrant agents of different manufacturers.

5.6 Test procedure

5.6.1 Preparation and pre-treatment

The surface to be tested has to be clean and free from oil, grease, moulding compound and finishresidues or any other contaminations that may interfere with the test.The penetrant testing has to be carried out on castings in delivery condition.

In as far as necessary the pre-treatment will be carried out using a mechanical, chemicalprocedure or using a combination of this procedure. This has to ascertain that the testing surfacehas to be free of residues and that the penetrant agent is able to penetrate any surface flaws.

Mechanical pre-treatmentWhen removing tinder, slag, and rust etc. by brushing, sanding, grinding, blasting it has to beascertained that the surface flaws are not covered by a densification of the surface or are coveredor sealed by abrasions.





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Chemical pre-treatmentThe chemical pre-treatment is carried out (spraying on a solvent) by using suitable chemicalcleaning agents to remove residues like grease, oil, dye or corrosives.Residues of the chemical agent have to be removed from the testing surface.

DryingIn the last stage of the pre-treatment the test samples have to be completely dried with a cloth orby drying off so that neither water nor solvent will remain in the surface flaws.

5.6.2 Application of the penetrant agent

Methods of applicationThe penetrant agent is applied by dipping (fluorescent penetrant testing), spraying or brushing (dyepenetrant testing) it on the sample to be tested.The work piece temperature should be between +10°C to +50°C.

Reaction time:The surface to be tested has to be completely covered during the entire reaction time. The reaction

time is about 30 minutes for both suitable test procedures at LESER, i.e. dipping into the penetrantcontainer and spraying. The penetrant agent may not start drying during the penetrant procedure.The reaction time of the penetrant agent is defined at LESERs as follows:

- Cast iron/ Nodular cast iron 15 min- Carbon steel 30 min- Stainless steel 45 min- Weldings 60 min- Stellited parts applicable up to 300 bar 60 min- Stellited parts applicable above 300 bar 120 min

5.6.3 Interim cleaning

The interim cleaning helps to remove superfluous test media from the surface so that no penetrantagent will be removed out of the surface flaws:

Fluorescent penetrant testingInterim cleaning will be done using water at normal tap pressure and at room temperature.During the interim cleaning the surface has to be examined for penetrant agent residues. Whenusing fluorescent penetrant agent (penetrant facility) this will be done by using the exposure of aUV light with a minimum UV-A exposure intensity on the testing surface of 300 μW / m². After that the surface should be cleaned with a clean, non-fuzz cloth moistened with solvent.

Dye penetrant testing (red-white test)Interim cleaning is done by spraying water or cleaning with a non-fuzz cloth.

Drying After removing the superfluous penetrant agent the testing surface has to be dried as quickly aspossible:- in the oven at max. 50°C for tested parts used with the fluorescent penetrant testing procedure(penetrant facility)- by flow of air (hairdryer), free of water and oil, with a pressure as low as possible for dyepenetrant testing.The drying procedure of the testing surface has to be carried out in such a manner that the dryingof the penetrant agent in the surface flaws is prevented

5.6.4 Development process

The developer is applied evenly on the surface. During the development a capillary active

substance is applied, which can take up the penetrant agent from the flawed area. Due to this theflawed area appears to be larger and will be seen more easily.





End of LWN



8. Documentation, Option Code

The issue of a certificate that the test has been carried out can be ordered with:

Option code Certificate Remarks

H03 LESER CGA (Certificate for Global Application) – Inspectioncertificate 3.1 according to DIN EN 10204

M03Inspection certificate 3.1 acc. to DIN EN 10204: Dyepenetrant testing

optionally

M21Inspection certificate 3.1 acc. to DIN EN 10204: Fluorescentpenetrant testing

optionally

9. Standard references

AD 2000-Merkblatt A4 Bodies of component parts; Tests before operationEN 571-1 Non-destructive test- penetrant testing -

Part 1- General foundations

DIN EN ISO 3452-3 Non-destructive testing – penetrant testing - Part 3 -calibration blockDIN EN ISO 3452-4 Non-destructive testing – penetrant testing - Part 4- devicesDIN EN ISO 3059 Non-destructive testing - penetrant testing and magnetic particle

examination, viewing conditionsEN 1371 Founding - penetrant testingDIN 1690 Technical delivery conditions for castings made of metal

materialsDIN EN 473 Non-destructive testing - Qualification and certification of

personnel of non-destructive tests - General foundations ASME Code, Section VIII Rules for Construction of Pressure Vessels, Division 1 ASME Code Section V Non-destructive Examination. Article 6 - Liquid Penetrant Examination

SE-165 Standard Test Method for Liquid Penetrant Examination

ASME B 16.34 Valves-Flanged, Threaded, and Welding EndMandatory Appendices III - Liquid Penetrant Examination:Procedure and Acceptance Standards

SNT-TC 1A Personnel Qualification and Certification in Non-destructive Testing

LWN 287-99 Regulative requirements regarding welding components at LESERsafety valves



The S afety Va lve

LESER GmbH & Co. KG Hamburg HRA 82424 Fon +49 (40) 251 65-100 Bank HypoVereinsbank Hamburg LESER – The Safety Valve

GF · BoD Joachim Klaus, Martin Leser Fax +49 (40) 251 65-500 BLZ 200 300 00, Konto · Account 320317120537 Hamburg, Wendenstr. 133 – 135 E-Mail [email protected] BIC: HYVEDEMM30020506 Hamburg, P.O. Box 26 16 51 ( ) Internet www.leser.com IBAN: DE64 2003 0000 0003 2031 71

USt-ID · VAT-Reg DE 118840936

Inspection certifi cate 3.1 acc. to DIN EN 10204

DYE PENETRANT TESTING [Option code M03]

LESER GmbH & Co. KG Postfach 26 16 51 20506 Hamburg, Germany

.

.

.

This LESER inspection certificate confirms that the test object was tested according to the undermentioned test references.

1 Test objectxxxxxxxxx

Tested componentPos. Description Material Manufacturer Heat No. / Batch

xx xxx xxx xxx xxx

2 Test reference

Dye penetrant testing acc. to: AD 2000-Merkblatt A4, chapter 6 ASME Code, Section VIII Div. 1, UG-136

3 Procedure LESER Works Standard LWN 331-04

4 Test specifiation

Test equipment: Dye penetrant testing table (red and white test)Test system: acc. to EN 571/1 II A – dTest media: Penetrant agent MET-L-Check Penetrant Dye VP30

Qualification of the test personnel: PT Level I, PT Level II (DIN EN 473 and SNT-TC 1A) 5 Acceptance cri teria

The castings will be evaluated in accordance with DIN EN 1371, DIN 1690 and ASME B16.34. The evaluation at the weldingseams will be carried out in accordance with regulations and standards for welding seams stipulated in table 19 of LWN 287-99.

6 Test result

The test was realised without any objection. The requirements of the test references are fulfilled.

Manfred OrlowskiHohenwestedt, xx.xx.200x Inspection Representative

Customer Order No.: xxx

LESER – Job – No.: xxx

LESER-Customers-No.: xxx

LESER-Contact: xxx

Fon: + 49 (40) 25 165-

Fax: + 49 (40) 25 165-500

eMail: [email protected]

Art.-No. Cold differential test pressure Option Code: xxx

xxxx.xxxx x,xx barg xxx,xx psig Further SV-Info: xxx

Nominal size Pressure ratingTag – No.

LESER –Job – No.

Pos.-No.

Serial – No. Body materialInlet Outlet Inlet Outlet

xxx xxx xx xxx xxx xx xx xx xx

This certification is written digitally and requires no handwrittensignature. (Acc. to EN 10204, chapter 5)



The S afety Va lve

LESER GmbH & Co. KG Hamburg HRA 82424 Fon +49 (40) 251 65-100 Bank HypoVereinsbank Hamburg LESER – The Safety Valve

GF · BoD Joachim Klaus, Martin Leser Fax +49 (40) 251 65-500 BLZ 200 300 00, Konto · Account 320317120537 Hamburg, Wendenstr. 133 – 135 E-Mail [email protected] BIC: HYVEDEMM30020506 Hamburg, P.O. Box 26 16 51 ( ) Internet www.leser.com IBAN: DE64 2003 0000 0003 2031 71

USt-ID · VAT-Reg DE 118840936

Inspection certifi cate 3.1 acc. to EN 10204

FLUORESCENT PENETRANT TESTING [Option code M21]

LESER GmbH & Co. KG Postfach 26 16 51 20506 Hamburg, Germany

.

.

.

This LESER inspection certificate confirms that the test object was tested according to the undermentioned test references.

1 Test objectxxxxxxxxx

Tested componentPos. Description Material Manufacturer Heat No. / Batch

xx xxx xxx xxx xxx

2 Test reference

Flourescent penetrant testing acc. to: AD 2000-Merkblatt A4, chapter 6 ASME Code, Section VIII Div. 1, UG-136

3 Procedure LESER Works Standard LWN 331-04

4 Test specifiation

Test equipment: HELLING penetrant facilityTest system: acc. to EN 571/1 I A – aTest media: Penetrant agent MET-L-Check Penetrant HM 405

Qualification of the test personnel: PT Level I, PT Level II (DIN EN 473 and SNT-TC 1A)

5 Acceptance cri teria

The castings will be evaluated in accordance with DIN EN 1371, DIN 1690 and ASME B16.34. The evaluation at the weldingseams will be carried out in accordance with regulations and standards for welding seams stipulated in table 19 of LWN 287-99.

6 Test result

The test was realised without any objection. The requirements of the test references are fulfilled.

Manfred Orlowski

Hohenwestedt, xx.xx.200x Inspection Representative

Customer Order No.: xxx

LESER – Job – No.: xxx

LESER-Customers-No.: xxx

LESER-Contact: xxx

Fon: + 49 (40) 25 165-

Fax: + 49 (40) 25 165-500

eMail: [email protected]

Art.-No. Cold differential test pressure Option Code: xxx

xxxx.xxxx x,xx barg xxx,xx psig Further SV-Info: xxx

Nominal size Pressure ratingTag – No.

LESER –Job – No.

Pos.-No.

Serial – No. Body materialInlet Outlet Inlet Outlet

xxx xxx xx xxx xxx xx xx xx xx

This certification is written digitally and requires no handwrittensignature. (Acc. to EN 10204, chapter 5)

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