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API SC 21 Committee NDE Practices and Acceptance Criteria

API Code

Acceptance Criteria Product Line

API 5CT Casing and Tubing

API 5CRA

API 5DP Drill Pipe

API 5L Line PipeAPI 6A Bodies, bonnets, end and outlet connections and clamp hub end connectors Wellhead

&Christmas Tree Equipment


API 6DPipeline Valves

API 8C

Drilling and Production Hoisting Equipment

API-11D1-HPHT for specific acceptance Criteria

NDE of components and welds shall meet the following requirements.— Welds shall be visually inspected per the requirements of an international standard or national standard,such as the ASME Boiler and Pressure Vessel Code, Section V, Article 9.— NDE for non-metallic components shall be visual inspection per supplier’s/manufacturer’s documentedspecifications.— NDE for metallic components shall be magnetic-particle inspection or liquid-penetrant inspection.— Sampling procedures and the criteria for acceptance or rejection of a batch lot shall be in accordance withISO 2859-1, general inspection level II, at a 2.5 AQL for O-Rings and a 1.5 AQL for other packingelements, until a documented variation history can be established. Sampling procedures shall then be

Packers and Bridge Plugs


established based on the documented variation history.— Magnetic-particle inspection shall meet the requirements of an international standard or national standard,such as ISO 13665 or ASTM E709.— NDE acceptance criteria shall be according to the supplier’s/manufacturer’s documented specifications.— All NDE instructions shall be approved by a level III examiner qualified in accordance with ISO 9712.NOTE For the purposes of these provisions, ASNT RP SNT-TC-1Ais equivalent to ISO 9712.— Type 1 components and welds for quality grade Q2 shall be NDE-inspected per a sampling plan thatmeets the requirements of an international standard or national standard, such as ISO 2859-1 orANSI/ASQC Z1.4.— Type 1 components and welds for quality grade Q1 shall be 100 % NDE-inspected using liquid-penetrant or magnetic particles.7.4.15 Personal QualificationsPersonnel performing NDE shall be qualified in accordance with an international standard or national standard, such as ISO 9712, level 2 minimum, for evaluation and interpretation.Personnel performing visual examinations shall have an annual eye examination in accordance with an international standard or national standard such as ISO 9712, as applicable to the discipline to be performed. All other personnel performing inspection for acceptance shall be qualified per the supplier's/manufacturer’s documented specifications.

Type 1 welds shall be magnetic particle or liquid penetrant inspected for surface defects to verifyconformance with the supplier’s/manufacturer’s written specifications. The applied magnetic particle orliquid penetrant inspections shall conform to the following requirements.1) Wet magnetic particle examinations shall be conducted per ISO 10893-5 or ASTM E709. Indicationsshall be described as one of the following:a. relevant indication: only those indications with major dimensions greater than 1.6 mm shall be considered relevant whereas inherent indications not associated with a surface rupture (i.e., magnetic permeability variations, non-metallic stringers etc.) shall be considered non relevant;b. linear indication: any indication in which the length is equal to or greater than three times its width;c. rounded indication: any indication which is circular or elliptical in which the length is less than threetimes its width.d. The acceptance criteria shall be:

— any relevant indication greater than or equal to 4.8 mm (3/ie in.) shall be consideredunacceptable;— no relevant linear indications shall be allowed for weldments;

— no more than ten relevant indications shall be present in any 39 cm2 (6 in.2) area;

— four or more rounded relevant indications in a line separated by less than 1.6 mm (1/i6 in.) shall be considered unacceptable.

API 14A 6.4.4.4 Nondestructive Examination

Nondestructive examination (NDE) shall be controlled using documented procedures, acceptance criteria, qualified personnel, and equipment as follows:

SubSea Safety Valves


a) radiographic, see 6.4.7.3;

b) ultrasonic, see 6.4.7.4;

c) magnetic particle, see 6.4.7.5;

d) liquid penetrant, see 6.4.7.6.

NOTE API 200 contains requirements for the design, development, and qualification of NDE methods used in the manufacture of equipment.

6.4.7 Nondestructive Examination

6.4.7.1 GeneralRequirements

6.4.7.1.1 All NDE instructions shall be approved by a Level Ill examiner qualified in accordance with ISO 9712.

NOTE For the purposes of these provisions, SNT-TC-1A is equivalent to ISO 9712.

6.4.7.1.2 All primary closure springs shall be magnetic particle or liquid penetrant inspected for surface defects to verify conformance with the supplier/manufacturer's written specifications.

6.4.7.1.3 All pressure-containing welds shall be magnetic particle or liquid penetrant inspected for surface defects and shall be volumetrically inspected by radiographic or ultrasonic techniques to verify conformance with the supplier/manufacturer's written specifications. Final NDE shall be performed after all welding, post weld heat treatment, and applicable machining operations on welded areas.

6.4.7.1.4 All pressure-containing castings and forgings shall be magnetic particle or liquid penetrant inspected for surface defects, after final machining and shall be volumetrically inspected by radiographic or ultrasonic techniques after heat treat to verify conformance with the supplier/manufacturer's written specifications.

NOTE For the purposes of these provisions, ASTM 01415 is equivalent to ISO 48.

6.4.7.2 Personnel Qualifications

6.4.7.2.1 Personnel performing NDE evaluations and interpretations shall be qualified in accordance with ISO 9712, to at least Levell, or equivalent.

NOTE For the purposes of these provisions, SNT-TC-1A is equivalent to ISO 9712.

6.4.7.2.2 Personnel performing visual examinations shall have an annual eye examination, as applicable to the discipline to be performed, in accordance with ISO 9712.

NOTE For the purposes of these provisions, SNT-TC-1A Is equivalent to ISO 9712.


6.4.7.2.3 All other personnel performing inspection for acceptance shall be qualified in accordance with documented requirements.

6.4.7.5 Magnetic Particle Inspections-Wet Magnetic Particle Examination

Wet magnetic particle examination shall be carried out as follows:

a) method: in accordance with ISO 13665 or ASTM E709;

b) indications shall be described as one of the following:1) relevant indication: only those indications with major dimensions greater than 1.6 mm e/16 in.) shall be considered relevant whereas inherent indications not associated with a surface rupture (i.e. magnetic permeability variations, nonmetallic stringers, etc.) shall be considered nonrelevant,

2) linear indication: any indication in which the length is equal to or greater than three times its width,

3) rounded indication: any indication which is circular or elliptical in which the length is less than three times its width;

c) acceptance criteria:

1) any relevant indication greater than or equal to 4.8 mm (3/16 in.) shall be considered unacceptable,

API 19AC

7.4.9 NDE of components/welds

NDE of components and welds shall meet the following requirements.

- Type 1 components and welds for Q2 shall be NOE inspected using liquid penetrant or magnetic particle methods per a sampling plan that meets the requirements of an international or national standard such as ISO 2859-1 or ANSI/ASQC Z1.4.

- Type 1 components and welds for Q1 shall be 100 % inspected using liquid penetrant or magnetic particle methods and visual inspection.

- When surface NOE is required, visual inspection and either magnetic particle inspection or liquid penetrant inspection shall be performed in the final material condition. Surface NOE shall be performed on all external surfaces and to the maximum extent on internal surfaces.

- Magnetic particle inspection shall meet the requirements of an international or national standard such as ISO 10893-5 or ASTM E 709.

- All NDE instructions shall be approved by a Level Ill examiner qualified in accordance with ASNT SNT-TC-1A, ISO 9712 or equivalent national or international standard. Completion

AccessoriesAPI 19OH Draft

7.10 NDE of Components Open Hole Completion


7.10.1 GeneralNDE of components are comprised of metallic and non-metallic components. The following includes general requirements for NDE:All NDE procedures shall be approved by a level Ill examiner qualified in accordance with ISO 9712.

NOTE: For the purposes of these provisions, ASNT RP SNT-TC-1A is equivalent to ISO 9712.

NDE inspections shall be performed by an ASNT TC 1A level II inspector or a qualified person as defined by the supplier/manufacturer.

NDE acceptance criteria shall be according to the supplier/manufacturer's documented specifications.

All personnel performing inspections for acceptance shall, as a minimum, be qualified per the supplier/manufacturer's documented specifications.

7.10.2 Metal ComponentsThe following are requirements when utilizing metal components:a) Where the component is manufactured from API 5CT or API 5CRA material the applicable NDErequirements shall be performed with the material in its final heat treat condition.

b) Components manufactured from material which is in conformance with API 5CT or 5CRA tubular NDE requirements and which are not heat treated thereafter, are considered acceptable based upon those records.

c) Type 1, Q1 metallic components and welds shall be NDE inspected utilizing magnetic particle inspection or liquid penetrant inspections to the supplier/manufacturer's procedures. Supplier manufacturer's procedures shall conform to:Magnetic particle inspections shall meet the requirements of an International Standard or national standard, such as ISO 13665 or ASTM E709.

d) Type 1, Q2 and Type 2, Q1 and Q2 components shall conform to the NDE requirements of the supplier/manufacturer. ToolsAPI 14L 7.4.6 NDE requirements

7.4.6.1 General

The NDE requirements shall be in accordance with the following.

a) All NDE instructions shall be approved by a Level Ill examiner qualified in accordance with ISO 9712.

NOTE For the purposes of these provisions, ASNT SNT-TC-1A is equivalent to ISO 9712.

b) All critically stressed components shall be magnetic particle or liquid penetrant inspected for surface defects to verify conformance to the supplier's / manufacturer’s written specifications.

c) All pressure-containing welds shall be magnetic particle or liquid penetrant inspected for surface defects and shall be

Lock Mandrels and Landing Nipples


volumetrically inspected by radiographic or ultrasonic techniques to verify conformance to the supplier's / manufacturer's written specifications.

d) All pressure-containing castings and forgings shall be magnetic particle or liquid penetrant inspected for surface defects and shall be volumetrically inspected by radiographic or ultrasonic techniques to verify conformance to the supplier's / manufacturer's written specifications. The supplier/manufacturer may develop AQL inspection levels based on documented variation history.

7.4.6.2 Methods and acceptance criteria

7.4.6.2.2 Wet magnetic particle examination

Wet magnetic particle examination shall be performed as follows:

a) method: in accordance with ISO 13665;

b) indications shall be categorized as one of the following:

relevant indication: only those indications with major dimensions greater than 1,6 mm (1/16 In) shall be considered relevant whereas inherent Indications not associated with a surface rupture (i.e., magnetic permeability variations, non-metallic stringers etc.) shall be considered non-relevant;

linear indication: any Indication whose length is equal to or greater than three times its width;

rounded indication: any indication which Is circular or elliptical and whose length Is less than three times Its width;

c) acceptance criteria:

1) any relevant indication greater than or equal to 4.8 mm (3/16 in) is unacceptable;

2) no relevant linear indication is allowed for weldments;

3) no more than ten relevant indications in any 39 cm2 (6 in2) area are permitted;

4) four or more rounded relevant indications in a line separated by less than 1.6 mm (1/16 in) are unacceptable.

7.4.7 Personnel qualifications

7.4.7.1 Personnel performing NDE evaluations and interpretations shall be qualified in accordance withISO 9712 to at least Level II or equivalent.


7.4.7.2 Personnel performing visual examinations shall have an annual eye examination, as applicable to the discipline to be performed in accordance with ISO 9712.



7.4.7.3 All other personnel performing inspection for acceptance shall be qualified in accordance with documented requirements.API 19V 7.8.2 Non-destructive examinations (NDE)

7.8.2.1 General requirements

7.8.2.1.1 Specifications

Non-destructive examinations shall be conducted according to the manufacturer's documented specifications that include acceptance criteria and the requirements of 7.8.2. All NDE instructions shall be approved by a qualified NDE level Ill examiner in accordance with a national or an international standard, such as ISO 9712 or ASNT SNT-TC-1A. Visual-examination requirements do not require level Ill approval. Acceptance of all materials/documents shall be permanently indicated either on the materials/documents or in records directly traceable to them.

7.8.2.1.2 Welds

Welds and adjacent heat-affected zones of the sample lot (see 7.8.2.2 and 7.8.2.3) shall be non destructively examined by one or more of the following methods: radiography, magnetic particle, ultrasonic or liquid penetrant, as designated in the manufacturer's specifications.

7.8.2.1.3 Castings and forgings

Castings and forgings shall be magnetic-particle or liquid-penetrant inspected for surface defects and/or shall be volumetrically inspected by radiographic or ultrasonic techniques to verify conformance with the manufacturer's specifications.

7.8.2.1.4 Indications

Any unacceptable indications shall be removed, repaired according to the supplier's/manufacturer's procedures and re-examined using the original NDE method and acceptance criteria.

7.8.2.2 Quality grade Q1

For quality grade Q1, 100 % of all components shall be inspected in accordance with the relevant subclauses in 7.5 to 7.10, as specified in Table 5.

7.8.2.3 Quality grade Q2

Sample lot examinations are acceptable and shall be performed on a minimum sample lot of 10 % of the job lot in accordance with ISO 2859-1 or with the supplier/manufacturer documented sampling plan with one component as the absolute minimum. When the inspection produces an unacceptable result, one additional component from the job lot shall be inspected. If it is also found to be unacceptable, then 100 % of the job lot shall be inspected to verify compliance.

Subsea Barrier Valves


7.8.2.4 NDE personnel qualifications

All personnel performing inspections for acceptance shall be qualified in accordance with the supplier's/manufacturer's documented requirements.

Personnel performing visual examinations shall have an annual eye examination, as applicable to the discipline to be performed, in accordance with ISO 9712 or equivalent, such as defined in ASNT SNT-TC-1A.

Personnel performing NDE evaluations and interpretations shall be qualified in accordance with ISO 9712, to a minimum of level II or equivalent, such as defined in ASNT SNT-TC-1A.

NOTE For the purposes ofthese provisions, ASNT SNT-TC-1A is equivalent to ISO 9712.

7.8.2.7 Wet-magnetic-particle inspections

When required by the suppliers/manufacturer's specifications, wet-magnetic-particle inspections shall be in accordance with an international or a national standard, such as ISO 13665 or ASTM E709. The minimum acceptance criteria are those specified in 7.8.2.6.

API 19G1 7.7 Non-destructive examination (NDE) requirements

7.7.1 General

The supplier/manufacturer's qualified representative shall inspect all accessible surfaces for cracks and damage, ensuring that the technical specification is met.

NDE shall be performed and accepted in accordance with the supplier/manufacturer's written specification that shall include the requirements defined in 7.7. The size of the sample of the components to be tested shall be in accordance with the appropriate quality-control grade level as indicated in Table 0.1. All welds and adjacent heat- affected zones of the specified sample lot shall be non-destructively examined by one or more of the following methods: radiography, magnetic particle, ultrasonic or liquid penetrant as designated in the supplier/manufacturer's specification.

If the examination produces an unacceptable indication as specified in 7.7.6, 7.7.7, 7.7.8 and/or 7.7.9, 20% of the side-pocket mandrels from the job lot shall be examined. If another indication is found to be unacceptable, then100 % of the job lot shall be examined. Any unacceptable indications shall be removed, repaired and re-examined using the original NDE method. A "report of non-conformance" shall be generated for non-conforming items. The disposition of all non-conforming items shall be documented.

7.7.2 NDE personnel qualification

Non-destructive examination personnel shall be qualified in accordance with requirements specified in ISO 9712Level II, or supplier/manufacturer's requirements that are not less stringent.

Side Pocket Mandrels


NOTE For the purposes of this provision, ASNT SNT-TC-1A is equivalent to ISO 9712.

7.7.3 NDE personnel qualification records

Records that document the qualifications of NDE testing personnel shall be maintained by the supplier/manufacturer.

7.7.4 Visualexamination personnel qualifications

Personnel performing visual examinations shall have an annual eye examination in accordance with ISO 9712, as applicable to the discipline to be performed. The qualifications for personnel performing visual examination shall be in accordance with the supplier/manufacturer's written requirements.

NOTE For the purposes of this provision, ASNT SNT-TC-1A is equivalent to ISO 9712.

API 14A


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API 603 Corrosion-resistant, Bolted Bonnet Gate Valves-Flanged and


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API 1104

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API RP 2Z

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