Ndt Pt(nsh Procedure) 6sw3b
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NASSER S AL-HAJRI CORPORATION PAGE 1 OF 9
LIQUID PENETRANT EXAMINATION PROCEDURE
DOC NO: NSH-PT-001-
REV: 0
PENETRANT EXAMINATION PROCEDURE
LEVEL 111 Name: Sign : .
Date
NASSER S AL-HAJRI CORPORATION PAGE 2 OF 9
LIQUID PENETRANT EXAMINATION PROCEDURE
INDEX 1.0
INDRODUCTION
2.0
SCOPE
3.0
REFERENCED STANDARDS
4.0
GENERAL REQUIRMENTS
5.0
EQUIPMENT
6.0
REQUIREMENTS
7.0
PROCEDURE/TECHNIQUE
8.0
EXAMINATION
9.0
DEVELOPING
10.0
INTERPRETAION
11.0
EVALUATION
12.0
CLASSIFICATION OF INDICATION
13.0
ACCEPTANCE CRITERIA
14.0
DOCUMENTATION
DOC NO: NSH-PT-001-
REV: 0
NASSER S AL-HAJRI CORPORATION PAGE 3 OF 9
LIQUID PENETRANT EXAMINATION PROCEDURE
DOC NO: NSH-PT-001-
REV: 0
1.0 INTRODUCTION This procedure provides the technical information and detailed steps necessary to ensure a complete and accurate liquid penetrant examination for detecting discontinuities, which are open to the surface of nonporous metals and other materials. Typical discontinuities detectable by this method are cracks, seams, laps, cold shuts, laminations and porosity. In principle a liquid penetrant is applied to the surface to be examined & allowed to enter discontinuities. All excess penetrant is then removed, the part is dried and a developer is applied. The developer function both as a blotter to absorb the penetrant that has been trapped in discontinuities & contrasting background to enhance the visibility of penetrant indication. The dyes in penetrants are either colour contrast (visible under white light) or fluorescent (visible under violet light). 2.0 SCOPE When specified by the referencing code section, the liquid penetrant examination technique described in this procedure shall be used. 3.0 REFERENCED STANDARDS 1. ANSI/ASME Sect. V 2. ANSI/ASME B 31.3 3. ANSI/ASME Sec.VIII Div. I & II 4. API 1104 5. ASNT-TC-1A from ASNT 6. ANSI/ASNT -189 7. AWS D1.1 4.0 GENERAL REQUIREMENTS 4.1 INSPECTION WITNESS Client inspection representative shall at their option, witness all or part of Liquid penetrant examination work LEVEL 111 Name: Sign :
Date
NASSER S AL-HAJRI CORPORATION PAGE 4 OF 9
LIQUID PENETRANT EXAMINATION PROCEDURE
DOC NO: NSH-PT-001-
REV: 0
4.2 NDT PERSONNEL The examination shall be performed by a PT level-II or PT level-I technician working under the direct supervision of level-II. All interpretation of test results shall be done by a certified NDT level-II technician. Personnel performed liquid penetrant examination must be qualified & certified in accordance with ANSI/ASNT -189,ASNT-TC-1A. 5.0 EQUIPMENT& MATERIALS 5.1 PENETRANT The following materials shall be used for conducting the tests. For visible dry penetrant ELY CHECKMOR 222 Solvent removable Red Dye Penetrant, ELY CHECKMOR 200 water washable Red Dye Penetrant , Magnaflux SKL-SP1 Solvent removable Red Penetrant or equivalent dye shall be used. For fluorescent method, water washable fluorescent penetrant BRITEMAR 4455 from ELY Chemicals UK, water washable Penetrant ZL 60C, ZL 66A, ZL 67 from Magnaflux or its equivalent Penetrant shall be used. 5.2 CLEANER Penetrant remover S-72 from ELY Chemicals, UK, SKC-S & SKC-HF from Magnaflux or its equivalent shall be used. 5.3 DEVELOPER Liquid spray developer LD-3, LD-2 from ELY Chemicals, UK, SKD-S2 Developers from Magnaflux or its equivalent shall be used. 6.0 REQUIREMENTS 6.1CONTROL OF CONTAMINANTS If this procedure is to be used on nickel base alloy, austenitic stainless steel & titanium, then all these materials shall obtain certification of contaminant content. These certification shall include the Penetrant manufacture’s batch no. and statement. Maximum Sulfur or Chlorine plus Fluorine content shall not be more than 1% of the residue by weight. LEVEL 111 Name: Sign :
Date
NASSER S AL-HAJRI CORPORATION PAGE 5 OF 9
LIQUID PENETRANT EXAMINATION PROCEDURE
DOC NO: NSH-PT-001-
REV: 0
6.2SURFACE PREPARATION Surface to be examined may be in the as welded, as rolled, as forged or as cast condition, unless surface irregularities interfere with the examination or mask the indication. Irregular surface shall be ground or machined as necessary to provide surfaces which are smooth for examination. Prior to examination the surface to be examined and the adjacent areas within at least 1” shall be dry and free of all dirt, grease, lint, scale, welding flux, weld spatter, oil and other extraneous matter that could obscure surface opening or otherwise interfere with the examination. Detergent, organic solvent, descaling solutions and paint re-movers shall be used for cleaning. Degreasing and ultrasonic cleaning methods can be used. NOTE:- SHOT & GRIT BLASTING OR OTHER SURFACE PREPARATION THAT COULD SMEAR OR OTHERWISE MASK THE DISCONTINUITIES SHALL NOT BE PERMITTED ON SURFACE TO BE EXAMINED. 6.3DRYING AFTER PREPARATION After cleaning, drying of the surface shall be accomplished by normal evaporation. Evaporation time shall be 5 minutes minimum. Where an indication of retained moisture exists, the evaporation time shall be increased till no evidence of moisture in the areas of test can be detected. 7.0 PROCEDURE/TECHNIQUE 7.1 TECHNIQUES The Penetrant techniques to be used with this procedure are Water Washable and Solvent removable. 7.2 PROCEDURE This procedure shall be used with the temperature of the penetrant and the surface of the part to be processed shall not be below 15.5°C through out the examination period. LEVEL 111 Name: Sign :
Date
NASSER S AL-HAJRI CORPORATION PAGE 6 OF 9
LIQUID PENETRANT EXAMINATION PROCEDURE
DOC NO: NSH-PT-001-
REV: 0
7.3 TECHNIQUE RESTRICTION Florescent Penetrant examination shall not follow a colour contrast Penetrant examination. Intermixing of Penetrant materials from different families or different manufacture’s is not permitted. 8.0 EXAMINATION 8.1 PENETRANT APPLICATION The Penetrant may be applied by any suitable mean such as dipping, brushing, or spraying. 8.2 PENETRATION TIME Minimum penetration time is 8 minutes and maximum is 30 minutes. 8.3 EXCESS PENETRANT REMOVAL Excess penetrant shall be removed by wiping with a cloth or the absorbent paper, repeating the operation until most traces shall be removed. The remaining traces shall be removed by lightly wiping the surface with cloth or absorbent paper moistened with solvent. Note:- Flushing the surface with solvent following the application of the penetrant and prior to developing is prohibited. For water washable Penetrant excess Penetrant may be removed by water spray. Pressure shall not exceed 50 PSI and water temperature shall not exceed 5°C. 8.4 DRYING AFTER EXCESS PENETRANT REMOVAL For solvent removable Panetrants, the surface may be dried by normal evaporation, blotting, wiping and forced air. For water washable Penetrant the surfaces may be dried blotting or circulation air.
LEVEL 111 Name: Sign :
Date
NASSER S AL-HAJRI CORPORATION LIQUID PENETRANT EXAMINATION PROCEDURE
PAGE 7 OF 9
DOC NO: NSH-PT-001-
REV: 0
9.0 DEVELOPING 9.1 9.2 9.3 9.4
The developer shall be applied immediately after ensuring that all excess Penetrant has been removed. The developer shall be applied by spraying. Developer time beings as soon as wet developer coating has dried on surface of parts. Minimum developer time is 7 minutes and maximum time is 30 minutes.
10.0 INTERPRETATION The surface shall be closely observed during the application of the developer, to monitor the behavior of the indications which tends to bleed out profusely. Note:- If the surface to be examined is large enough to preclude complete examination within prescribed time, the surface shall be examined in increments.
10.1 FINAL INTERPRETATION It shall be made within 7-30 minutes after the application of the developer or as soon as a wet developer coating is dry.
10.2 COLOUR CONTRAST PENETRANTS With a colour contrast penetrant, the developer forms a reasonably uniform white coating. Surface discontinuities are indicated by bleed out of the penetrant which is normally a deep red colour that stains the developer. Indications with light pink colour may indicate excessive cleaning. Inadequate cleaning may leave an excessive background making interpretation difficult. Minimum illumination of 50 footcandles is required on the surface of the part being examined to ensure adequate sensitivity during the examination and evaluation of indications. LEVEL 111 Name: Sign :
Date
NASSER S AL-HAJRI CORPORATION PAGE 8 OF 9
LIQUID PENETRANT EXAMINATION PROCEDURE
DOC NO: NSH-PT-001-
REV: 0
10.3 FLUORESCENT PENETRANTS With fluorescent penetrants the process is essentially the same as in 10.2 with the exception that the examination is performed using ultraviolet light, called black light. The examination shall be performed as follow. a) It shall be performed in darkened area. b) The examiner shall be in the darkened area for at least 5 min. prior to performing the examination to enable his eyes to adapt to dark viewing. If the examiner wear glasses or lenses, they shall not be photosensitive. c) The black light shall be allowed to warm up for minimum of 5 minutes prior to use or measurement of the intensity of the ultraviolet light emitted. d) The black light intensity shall be measured with a black light meter. A minimum of 1000 micro watts/cm2 on the surface of the part be examined shall be required. The black light intensity shall be measured at least 8 hrs., and whenever the work station is changed. 10.4 POST EXAMINATION CLEANING Post examination cleaning shall be performed as soon as possible after the examination. Penetrant material if any shall be removed by wiping with the cloths or brushing. 11.0 EVALUATION 11.1 All indication shall be evaluated in term of acceptance standards of the reference code section. Acceptance criteria are listed in 13.0 of this document. 11.2 Discontinuities at the surface will be indicated by bleed out of penetrant; however, localized surface irregularities due to machining marks or other surface conditions may produce false indications. 11.3 Broad area of fluorescence or pigmentation which could mask indications of discontinuities are unacceptable, and such areas shall be cleaned and re-examined. LEVEL 111 Name: Sign :
Date
NASSER S AL-HAJRI CORPORATION PAGE 9 OF 9
LIQUID PENETRANT EXAMINATION PROCEDURE
DOC NO: NSH-PT-001-
REV: 0
12.0 CLASSIFICATION OF INDICATIONS 12.1 Any indication with a maximum dimension of 1/16” (1.59 mm) or less shall be classifieds non-relevant. Any larger indication believed to be non-relevant shall be regarded as relevant until re-examined. The surface may be ground or otherwise conditioned before re-examined. After an indication is determined to be non-relevant, other non-relevant indication of the same type need not be re-examined. 12.2 Relevant indications are those caused by discontinuities. Linear indications are those in which the length is more than three times the width. Rounded indications are those in which the length is three times the width or less. 13.0 ACCEPTANCE CRITERIA The acceptance criteria for liquid examination shall be ASME Section VIII Appendix 8. All surfaces to be examined shall be free of: 13.1 Relevant linear indications. 13.2 Relevant rounded indications greater than 3/16”. 13.3 Four or more relevant rounded indications in a line separated by 1/16” or less (edge to edge). 13.4 An indication of an imperfection may be larger than the imperfection that causes it; however, the size of the indication is the basis for acceptance evaluation. 14.0 DOCUMENTATION The record of liquid pentrant examination shall be reported and submitted in the attached format by a level-II PT technician LEVEL 111 Name: Sign : .
Date
LIQUID PENETRANT EXAMINATION PROCEDURE
DOC NO: NSH-PT-001-
REV: 0
PENETRANT EXAMINATION PROCEDURE
LEVEL 111 Name: Sign : .
Date
NASSER S AL-HAJRI CORPORATION PAGE 2 OF 9
LIQUID PENETRANT EXAMINATION PROCEDURE
INDEX 1.0
INDRODUCTION
2.0
SCOPE
3.0
REFERENCED STANDARDS
4.0
GENERAL REQUIRMENTS
5.0
EQUIPMENT
6.0
REQUIREMENTS
7.0
PROCEDURE/TECHNIQUE
8.0
EXAMINATION
9.0
DEVELOPING
10.0
INTERPRETAION
11.0
EVALUATION
12.0
CLASSIFICATION OF INDICATION
13.0
ACCEPTANCE CRITERIA
14.0
DOCUMENTATION
DOC NO: NSH-PT-001-
REV: 0
NASSER S AL-HAJRI CORPORATION PAGE 3 OF 9
LIQUID PENETRANT EXAMINATION PROCEDURE
DOC NO: NSH-PT-001-
REV: 0
1.0 INTRODUCTION This procedure provides the technical information and detailed steps necessary to ensure a complete and accurate liquid penetrant examination for detecting discontinuities, which are open to the surface of nonporous metals and other materials. Typical discontinuities detectable by this method are cracks, seams, laps, cold shuts, laminations and porosity. In principle a liquid penetrant is applied to the surface to be examined & allowed to enter discontinuities. All excess penetrant is then removed, the part is dried and a developer is applied. The developer function both as a blotter to absorb the penetrant that has been trapped in discontinuities & contrasting background to enhance the visibility of penetrant indication. The dyes in penetrants are either colour contrast (visible under white light) or fluorescent (visible under violet light). 2.0 SCOPE When specified by the referencing code section, the liquid penetrant examination technique described in this procedure shall be used. 3.0 REFERENCED STANDARDS 1. ANSI/ASME Sect. V 2. ANSI/ASME B 31.3 3. ANSI/ASME Sec.VIII Div. I & II 4. API 1104 5. ASNT-TC-1A from ASNT 6. ANSI/ASNT -189 7. AWS D1.1 4.0 GENERAL REQUIREMENTS 4.1 INSPECTION WITNESS Client inspection representative shall at their option, witness all or part of Liquid penetrant examination work LEVEL 111 Name: Sign :
Date
NASSER S AL-HAJRI CORPORATION PAGE 4 OF 9
LIQUID PENETRANT EXAMINATION PROCEDURE
DOC NO: NSH-PT-001-
REV: 0
4.2 NDT PERSONNEL The examination shall be performed by a PT level-II or PT level-I technician working under the direct supervision of level-II. All interpretation of test results shall be done by a certified NDT level-II technician. Personnel performed liquid penetrant examination must be qualified & certified in accordance with ANSI/ASNT -189,ASNT-TC-1A. 5.0 EQUIPMENT& MATERIALS 5.1 PENETRANT The following materials shall be used for conducting the tests. For visible dry penetrant ELY CHECKMOR 222 Solvent removable Red Dye Penetrant, ELY CHECKMOR 200 water washable Red Dye Penetrant , Magnaflux SKL-SP1 Solvent removable Red Penetrant or equivalent dye shall be used. For fluorescent method, water washable fluorescent penetrant BRITEMAR 4455 from ELY Chemicals UK, water washable Penetrant ZL 60C, ZL 66A, ZL 67 from Magnaflux or its equivalent Penetrant shall be used. 5.2 CLEANER Penetrant remover S-72 from ELY Chemicals, UK, SKC-S & SKC-HF from Magnaflux or its equivalent shall be used. 5.3 DEVELOPER Liquid spray developer LD-3, LD-2 from ELY Chemicals, UK, SKD-S2 Developers from Magnaflux or its equivalent shall be used. 6.0 REQUIREMENTS 6.1CONTROL OF CONTAMINANTS If this procedure is to be used on nickel base alloy, austenitic stainless steel & titanium, then all these materials shall obtain certification of contaminant content. These certification shall include the Penetrant manufacture’s batch no. and statement. Maximum Sulfur or Chlorine plus Fluorine content shall not be more than 1% of the residue by weight. LEVEL 111 Name: Sign :
Date
NASSER S AL-HAJRI CORPORATION PAGE 5 OF 9
LIQUID PENETRANT EXAMINATION PROCEDURE
DOC NO: NSH-PT-001-
REV: 0
6.2SURFACE PREPARATION Surface to be examined may be in the as welded, as rolled, as forged or as cast condition, unless surface irregularities interfere with the examination or mask the indication. Irregular surface shall be ground or machined as necessary to provide surfaces which are smooth for examination. Prior to examination the surface to be examined and the adjacent areas within at least 1” shall be dry and free of all dirt, grease, lint, scale, welding flux, weld spatter, oil and other extraneous matter that could obscure surface opening or otherwise interfere with the examination. Detergent, organic solvent, descaling solutions and paint re-movers shall be used for cleaning. Degreasing and ultrasonic cleaning methods can be used. NOTE:- SHOT & GRIT BLASTING OR OTHER SURFACE PREPARATION THAT COULD SMEAR OR OTHERWISE MASK THE DISCONTINUITIES SHALL NOT BE PERMITTED ON SURFACE TO BE EXAMINED. 6.3DRYING AFTER PREPARATION After cleaning, drying of the surface shall be accomplished by normal evaporation. Evaporation time shall be 5 minutes minimum. Where an indication of retained moisture exists, the evaporation time shall be increased till no evidence of moisture in the areas of test can be detected. 7.0 PROCEDURE/TECHNIQUE 7.1 TECHNIQUES The Penetrant techniques to be used with this procedure are Water Washable and Solvent removable. 7.2 PROCEDURE This procedure shall be used with the temperature of the penetrant and the surface of the part to be processed shall not be below 15.5°C through out the examination period. LEVEL 111 Name: Sign :
Date
NASSER S AL-HAJRI CORPORATION PAGE 6 OF 9
LIQUID PENETRANT EXAMINATION PROCEDURE
DOC NO: NSH-PT-001-
REV: 0
7.3 TECHNIQUE RESTRICTION Florescent Penetrant examination shall not follow a colour contrast Penetrant examination. Intermixing of Penetrant materials from different families or different manufacture’s is not permitted. 8.0 EXAMINATION 8.1 PENETRANT APPLICATION The Penetrant may be applied by any suitable mean such as dipping, brushing, or spraying. 8.2 PENETRATION TIME Minimum penetration time is 8 minutes and maximum is 30 minutes. 8.3 EXCESS PENETRANT REMOVAL Excess penetrant shall be removed by wiping with a cloth or the absorbent paper, repeating the operation until most traces shall be removed. The remaining traces shall be removed by lightly wiping the surface with cloth or absorbent paper moistened with solvent. Note:- Flushing the surface with solvent following the application of the penetrant and prior to developing is prohibited. For water washable Penetrant excess Penetrant may be removed by water spray. Pressure shall not exceed 50 PSI and water temperature shall not exceed 5°C. 8.4 DRYING AFTER EXCESS PENETRANT REMOVAL For solvent removable Panetrants, the surface may be dried by normal evaporation, blotting, wiping and forced air. For water washable Penetrant the surfaces may be dried blotting or circulation air.
LEVEL 111 Name: Sign :
Date
NASSER S AL-HAJRI CORPORATION LIQUID PENETRANT EXAMINATION PROCEDURE
PAGE 7 OF 9
DOC NO: NSH-PT-001-
REV: 0
9.0 DEVELOPING 9.1 9.2 9.3 9.4
The developer shall be applied immediately after ensuring that all excess Penetrant has been removed. The developer shall be applied by spraying. Developer time beings as soon as wet developer coating has dried on surface of parts. Minimum developer time is 7 minutes and maximum time is 30 minutes.
10.0 INTERPRETATION The surface shall be closely observed during the application of the developer, to monitor the behavior of the indications which tends to bleed out profusely. Note:- If the surface to be examined is large enough to preclude complete examination within prescribed time, the surface shall be examined in increments.
10.1 FINAL INTERPRETATION It shall be made within 7-30 minutes after the application of the developer or as soon as a wet developer coating is dry.
10.2 COLOUR CONTRAST PENETRANTS With a colour contrast penetrant, the developer forms a reasonably uniform white coating. Surface discontinuities are indicated by bleed out of the penetrant which is normally a deep red colour that stains the developer. Indications with light pink colour may indicate excessive cleaning. Inadequate cleaning may leave an excessive background making interpretation difficult. Minimum illumination of 50 footcandles is required on the surface of the part being examined to ensure adequate sensitivity during the examination and evaluation of indications. LEVEL 111 Name: Sign :
Date
NASSER S AL-HAJRI CORPORATION PAGE 8 OF 9
LIQUID PENETRANT EXAMINATION PROCEDURE
DOC NO: NSH-PT-001-
REV: 0
10.3 FLUORESCENT PENETRANTS With fluorescent penetrants the process is essentially the same as in 10.2 with the exception that the examination is performed using ultraviolet light, called black light. The examination shall be performed as follow. a) It shall be performed in darkened area. b) The examiner shall be in the darkened area for at least 5 min. prior to performing the examination to enable his eyes to adapt to dark viewing. If the examiner wear glasses or lenses, they shall not be photosensitive. c) The black light shall be allowed to warm up for minimum of 5 minutes prior to use or measurement of the intensity of the ultraviolet light emitted. d) The black light intensity shall be measured with a black light meter. A minimum of 1000 micro watts/cm2 on the surface of the part be examined shall be required. The black light intensity shall be measured at least 8 hrs., and whenever the work station is changed. 10.4 POST EXAMINATION CLEANING Post examination cleaning shall be performed as soon as possible after the examination. Penetrant material if any shall be removed by wiping with the cloths or brushing. 11.0 EVALUATION 11.1 All indication shall be evaluated in term of acceptance standards of the reference code section. Acceptance criteria are listed in 13.0 of this document. 11.2 Discontinuities at the surface will be indicated by bleed out of penetrant; however, localized surface irregularities due to machining marks or other surface conditions may produce false indications. 11.3 Broad area of fluorescence or pigmentation which could mask indications of discontinuities are unacceptable, and such areas shall be cleaned and re-examined. LEVEL 111 Name: Sign :
Date
NASSER S AL-HAJRI CORPORATION PAGE 9 OF 9
LIQUID PENETRANT EXAMINATION PROCEDURE
DOC NO: NSH-PT-001-
REV: 0
12.0 CLASSIFICATION OF INDICATIONS 12.1 Any indication with a maximum dimension of 1/16” (1.59 mm) or less shall be classifieds non-relevant. Any larger indication believed to be non-relevant shall be regarded as relevant until re-examined. The surface may be ground or otherwise conditioned before re-examined. After an indication is determined to be non-relevant, other non-relevant indication of the same type need not be re-examined. 12.2 Relevant indications are those caused by discontinuities. Linear indications are those in which the length is more than three times the width. Rounded indications are those in which the length is three times the width or less. 13.0 ACCEPTANCE CRITERIA The acceptance criteria for liquid examination shall be ASME Section VIII Appendix 8. All surfaces to be examined shall be free of: 13.1 Relevant linear indications. 13.2 Relevant rounded indications greater than 3/16”. 13.3 Four or more relevant rounded indications in a line separated by 1/16” or less (edge to edge). 13.4 An indication of an imperfection may be larger than the imperfection that causes it; however, the size of the indication is the basis for acceptance evaluation. 14.0 DOCUMENTATION The record of liquid pentrant examination shall be reported and submitted in the attached format by a level-II PT technician LEVEL 111 Name: Sign : .
Date
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