1.0-4.0 General/ Materials/ Equipment/ Procedures

1.0 Scope

  • This audit is intended for use for internal audits at MSM and for auditing MSM's NDT suppliers. The criteria found within is largely based on Nadcap's audit checklist AC7114/2 with changes and modifications.

2.0 General Information

  • 2.1 Instructions for the Auditor:
    In completing this audit, auditors must respond with a Yes, No, or N/A to address each requirement. For any No response, the auditor must initiate an NCR. Yes responses indicate adequate compliance. N/A may only be used for items that do not apply to the system at all. If an opportunity for improvement or observation is noted, that response may be indicated. This response shall be considered the same as a Yes with notes for potential improvement for upcoming audits.
    Note: guidance attached to any question may contain required information.

  • List below all documents (drawings, procedures, specifications, etc.) and their revision levels used during this audit.

3.0 Materials and Equipment

3.1 Materials, Equipment Listing, and Information

  • The auditor shall review the company's provided Materials and Equipment Listing, for adequacy, content and correctness. Attachments are for information only but shall be completed fully. NCR’s shall not be written against attachments. (Attachment AC7114/2-A).

3.2 Material Certification

  • Is the manufacturer’s certification available for the magnetic particles used and is there evidence that they conform to the applicable AMS?

    Compliance Assessment Guidance: The supplier shall have traceability to the manufacturer’s certification.

  • Is the manufacturer’s certification available for the suspension carrier, and/or conditioning agents used, as applicable, and is there evidence that it conforms to the applicable standard? If so, identify the applicable standard met.
    Light petroleum distillate
    AMS 2641 (Type 1 or 2)
    A-A-59230
    Other (list)
    Suitable conditioned water (conditioning agents)
    AS 4792
    Other (list)
    Compliance Assessment Guidance: The supplier shall have traceability to the manufacturer’s certification. Suspension carriers not listed above shall require documented customer approval.

4.0 Procedures

4.1 Customer Requirements

  • Is there a procedure, general or specific, for processing and inspection using the magnetic particle method?

  • Does the procedure make reference to the governing specification(s) it is intended to meet?

4.2 Approval

  • Does the procedure(s) indicate approval by the applicable Level 3?

    Compliance Assessment Guidance: The applicable Level 3 may be the Nadcap User, Nadcap User qualified or approved Level 3, internal Level 3 and/or external Level 3.

4.3 Procedure/ Technique: Does the written procedure, general or specific, contain the following information as a minimum? Compliance Assessment Guidance: • The term, “procedure” may be synonymous with a traveler or a route card, etc. • All non-technical requirements that have been flowed down solely by the baseline will only be required to be met if that in-use technique or process has been revised since the inception of the baseline on December 4, 2006.

  • Traceability to the name and address of the facility performing the inspection?

    Compliance Assessment Guidance: In some cases it may not be necessary for the actual address as long as the facility is traceable to a unique identifier.

  • Procedure identification number and the date the procedure was approved?

  • A requirement that all personnel are qualified and certified to the required level for the activity undertaken and the applicable contract requirements?

  • Identification of the part(s) to which the procedure applies, including the material, alloy and dimensions of the part when used for technique development?

    Compliance Assessment Guidance. Material and alloy. Where the supplier is working directly to a maintenance manual or cannot ascertain the material type from the customer the definition ‘ferromagnetic steel’ is an acceptable alternative.

  • Equipment to be used for magnetization?

  • Type of magnetizing current (e.g., half wave rectified, three phase, single phase, AC, etc.)?

  • Directions of magnetization to be used, the order in which they are applied and any demagnetization procedures to be used between shots?

  • Magnetic particle application method used, (continuous / residual)?

  • Pulse duration, type (AC, DC), and quantity (pulses/shot)?

    Compliance Assessment Guidance: The number of shots and shot length shall meet customer requirements. Where customer requirements are not specific, the minimum shall be 2 shots each at a minimum of ½ second.

  • Magnitude of current, direction of all magnetic fields, the magnetic field strengths, the types of magnetic field strength indicators, ampere turns, etc?

  • Magnetic field strength and location of Gauss/Tesla measurements if AS 5371 shims are not used?

    Compliance Assessment Guidance: For multidirectional magnetization techniques, this includes reference to verifying the field direction, strength, and balance using the required test parts / AS 5371 shims

  • The method used to demonstrate correct field balance when using multidirectional magnetization

  • Directions for positioning the item with respect to the magnetizing equipment?

  • Complete pre-examination and post-examination demagnetization, cleaning and preservation requirements or reference to procedures containing such instructions?

  • Areas of the part(s) to be examined including an illustration; either a drawing or a photo?

  • Method of establishing the magnetization (e.g., head, coil, cable wrap, etc.)?

  • Type of records and/or method of marking parts after examination?

  • Identification of test parts used for system performance verification?

  • Sequence of the magnetic particle examination relative to manufacturing operations, if applicable?

  • Type of magnetic particle material (dry or wet, or fluorescent, etc.)?

  • Acceptance requirements to be used for evaluating indications and disposition of part(s) after examination?

  • All required process controls and calibration checks called out in Section 5 & 6 of this checklist?

  • Reporting of arcing and actions taken to prevent overheating of the parts?

    Compliance Assessment Guidance: NA applies only when direct contact methods are not used.

  • Address inspection of hardware which has a coating or plating applied in accordance with the standard? (if applicable)

5.0 NDT Process Control

  • Compliance Assessment Guidance:
    • If a particular system is not used by the supplier, i.e. water based suspension, then questions pertaining to that system are NA and no explanation is required. Where equipment is not used for a period in excess of the check frequency, the check shall be performed immediately prior to use.
    • If the following process control checks are performed at the supplier, adequate procedural coverage and documentation of said tests and results are expected to be evident and are to be reviewed by the auditor. If the tests are performed by an external source, the auditor is expected to review evidence of flow-down (i.e., a Purchase Order) with the appropriate information to include at a minimum, traceability to the required test and the standard used. In addition, an adequate certification or other document is required to document the results of the tests.

5.1 Suspension Concentration Checks

  • Is the suspension’s wet particle concentration tested at the start of every shift?

    Compliance Assessment Guidance: The suspension concentration check is not applicable to aerosol spray cans.

  • Is the suspension agitated at least 30 minutes prior to performing the concentration check?

  • Is the suspension sample demagnetized and allowed to settle for at least 60 minutes for petroleum based suspension or 30 minutes for conditioned water suspension, prior to performing the concentration check?

  • Is the magnetic particle concentration within the following limits?
    Fluorescent 0.1 - 0.4 mL per 100 mL sample

  • Are records of the concentration check on file and do they indicate acceptable results?

    Compliance Assessment Guidance: The actual concentration value shall be recorded; “OK” or some other mark is not acceptable.

  • Did the facility properly demonstrate the required suspension concentration check?

  • Is a centrifuge vessel with a stem graduated in 0.05ml increments used for the concentration check?

    Compliance Assessment Guidance: Certification/calibration is not required.

5.2 Suspension Contamination Checks

  • Is the reference sample of unused suspension retained for the contamination check and is it stored properly?

    Compliance Assessment Guidance: The sample of unused particle suspension shall be stored in such a manner as to be free of exposure to light and shall only be brought into the inspection area for comparison against the in-use suspension. The suspension contamination check is not applicable to aerosol spray cans.

  • If the sample shows reduced fluorescence and/or loose agglomeration rather than a solid layer of particles, is the suspension drained, machine cleaned and refilled with fresh suspension?

    Compliance Assessment Guidance: If this condition has occurred, then there must be documented evidence of corrective actions taken.

  • Is the suspension evaluated for contamination at least weekly?

  • Is the maximum acceptable volume of contaminate 30% or less of the volume of magnetic particles?

  • If the suspension shows bands or striations of contamination exceeding 30% of the volume of magnetic particles, is the suspension drained, machine cleaned and refilled with new suspension?

    Compliance Assessment Guidance: Examine the graduated portion of the tube, under both black light and visible light, for striations or bands, difference in color or appearance. Bands or striations may indicate contamination. If this condition has occurred, then there must be documented evidence of corrective actions taken.

  • Are records of contamination checks on file and do they indicate acceptable results?

    Compliance Assessment Guidance: The test results shall indicate a percentage or simply state “acceptable” or some other term that denotes acceptance.

  • Did the facility properly demonstrate the required suspension contamination checks?

5.3 Water Break Test (Water Based Vehicles)

  • Is the water break test of water based vehicles being performed at least daily in accordance with ASTM-E-1444?

  • Are records of this test on file and do they provide acceptable results?

    Compliance Assessment Guidance: Records indicating “OK” or some other check mark are acceptable for this test.

  • Did the facility properly demonstrate this check?

5.4 Black Light (UV) Meters and Measurements

  • Is a digital meter, with a spectral sensitivity from 320-400 nm, utilized to verify black light intensity?

  • Does the meter calibration meet the following requirements?

    - Is calibration of the meter being performed at least semi-annually or, with adequate documentation, extended as allowed by the governing standard but not to exceed 12 months when 4 consecutive acceptable calibrations and adequate documentation is available to support the decreased frequency?
    - Is the calibration performed at a minimum of three points to establish linearity? Compliance Assessment Guidance: No specific values need to be used.
    - Is the black light meter accurate to within +/- 5% of the standard reading? Compliance Assessment Guidance: The value of ±5% is in reference to a comparison of the light meter being calibrated to another calibrated (traceable to NIST or other National Standard) light meter. It is not meant to represent a “true” ±5% calibration tolerance.
    - Is the black light meter traceable to calibration data? Compliance Assessment Guidance: The meter shall be serialized, stickered, or otherwise identifiable to the calibration data.
    - Is the calibration current?

  • Is the black light intensity of the inspection light(s) checked at least daily, prior to use or after equipment maintenance?
    - Is the minimum acceptable limit 1200 µW/cm2 at a fixed distance of 15 inches (38 cm)? Compliance Assessment Guidance: Borescope intensity shall be a minimum of 1000 µW/cm2 at the inspection surface as measured from the inspection distance.
    - Are records of this check on file and do they indicate acceptable results? Compliance Assessment Guidance: The actual light intensity shall be recorded for this check; “OK” or some other mark is not acceptable.
    - Did the facility properly demonstrate this check?

  • Are the black light reflectors and filters clean and in good condition?

  • Where battery powered lamps are used does the procedure address consistency of U/V output and the controls used to ensure adequate output during all inspection activity

    Compliance Assessment Guidance: The procedure shall address the check requirements for battery powered sources.

5.5 White Light Meters and Measurements

  • Does the White Light Meter Calibration meet the following requirements?
    - Is calibration of the meter being performed at least semi-annually or, with adequate documentation, extended as allowed by the governing standard but not to exceed 12 months when 4 consecutive acceptable calibrations and adequate documentation is available to support the decreased frequency?
    - Is the calibration performed at a minimum of three points to establish linearity? Compliance Assessment Guidance: No specific values need to be used.
    - Is the light meter accurate to within ± 5% of the standard reading? Compliance Assessment Guidance: The value of ±5% is in reference to a comparison of the light meter being calibrated to another calibrated (traceable to NIST or other National Standard) light meter. It is not meant to represent a “true” ±5% calibration tolerance.
    - Is the white light meter traceable to the calibration data? Compliance Assessment Guidance: The meter shall be serialized, stickered or otherwise identifiable to the calibration data.
    -

  • Is ambient white light in the inspection area controlled for fluorescent magnetic particle inspection, not to exceed 2 ft candles/20 lux, as measured at the examination surface?

    Compliance Assessment Guidance: This measurement is taken in the darkened inspection area to include the examination surface with the black lights operating in the fixed position of 15 inches (38 cm).

  • Is the check being performed at least weekly or prior to use and after equipment maintenance?
    - Are records of this check on file and do they indicate acceptable results? Compliance Assessment Guidance: The actual light intensity shall be recorded for this check, “OK” or some other mark is not acceptable.
    - Did the facility properly demonstrate this check?

  • Is 100 ft-candles/1000 lux, or more, available at the part surface for visual verification of magnetic particle indications?

    Compliance Assessment Guidance: This question shall be applicable where accept/reject decisions rely on the use of white light. (otherwise NA)

  • Is the white light checked and documented at least weekly or prior to use?

    Compliance Assessment Guidance: The actual light intensity shall be recorded for this check; “OK” or some other mark is not acceptable.

  • Did the facility properly demonstrate this check?

6.0 Equipment Calibration Checks

6.1 Magnetic Field Strength

  • Is the magnetic field strength determined by an appropriate method?
    Identify the applicable method(s):
    a. Testing parts having known or artificial discontinuities, including AS5371 notched shim indicators, of the type, size and location specified in the acceptance requirements.
    b. Using a Hall-effect probe gauss meter capable of measuring the peak values of the tangential field.
    c. Use of the formulas in conjunction with another field strength monitoring method (a or b).

    Compliance Assessment Guidance: Magnetic field strength shall be determined by a, b or c. If c applies then this shall be in conjunction with either a or b. If using AS 5371 notched shim indicators the protective coating shall have been removed prior to use and they shall be correctly fastened on the component

  • If Hall Effect Gauss meters are used, are they calibrated at a minimum of three points within the range of use and at least semi-annually?

    Compliance Assessment Guidance: Calibration example: The calibration points for a meter used at 1 Gauss to 85 Gauss could be calibrated at 0.5/50/100 Gauss to meet the requirement. These are not absolute points; the auditor must use discretion when determining if the data points are adequate.

  • Are instruments used only for residual field measurement calibrated at a minimum of three points in their range of use at least semi-annually?

    Compliance Assessment Guidance: For instruments measuring positive and negative values the three points could be the maximum residual field level and zero.- for example +3, 0 and -3 Gauss NA only if a Hall Effect Gauss meter or other acceptable device is used in place of the residual field indicator.

  • Is the magnetic particle machine ammeter checked at least semi-annually at a minimum of three points encompassing the range of use?

    Compliance Assessment Guidance: The ammeter/shunt combination and magnetic particle machine ammeter shall not differ by more than 10%, or 50 amperes, whichever is greater, of the unit’s output. Note: The calibration points for a meter used at 100 amps to 3000 amps could be calibrated at 100 / 1000 / 3000 to meet the requirement.

  • Are records of this check on file and do they indicate acceptable results?

    Compliance Assessment Guidance: The actual values shall be recorded for this check; “OK” or some other mark is not acceptable.

  • Is the magnetic particle machine checked for stability / repeatability at least semi-annually to determine the minimum usable output?

    Compliance Assessment Guidance: The indicated amperage output of the machine shall be checked to establish the lowest setting where the machine will repeatedly indicate ±10% or 50 amps whichever is greater for the selected amperage. It is recommended that no fewer than six measurements are carried out (values need not be recorded).
    NA is only applicable for equipment that won't permit use outside +- 10% or 50 amps whichever is greater of selected value.

  • Is the equipment marked with the lowest usable output values determined by the output repeatability check?

  • For equipment using a timer to control pulse duration, is the pulse duration of the magnetizing current flow controlled so that at least 0.5 seconds can be achieved?

  • For equipment using a timer, is the pulse timer calibrated at least semi-annually to be within ± 0.1seconds?

  • Are records of this check on file and do they indicate acceptable results?

    Compliance Assessment Guidance: The actual values shall be recorded for this check; “OK” or some other mark is not acceptable.

  • If the magnetic particle machine is equipped with the quick break feature, is the quick-break feature being checked at least semi-annually?

    Compliance Assessment Guidance: This check is to be conducted in the coil.

  • Are records of this test on file and do they indicate acceptable results in accordance with the manufacturer’s guidelines?

    Compliance Assessment Guidance: Records indicating “OK” or some other check mark are acceptable for this test. The manufacturer’s guidelines shall indicate acceptance criteria.

6.2 System Performance

  • Is a device used to monitor the system performance? (Identify applicable method used)
    AISI 01 ‘Ketos’ Ring
    AS5282 Ring
    TP 1-4
    Known Defective Part
    Other approved standard
    (List) _________________________________________

    Compliance Assessment Guidance: One or more of the above devices shall be used to monitor the system performance. Any other standard approved by the customer shall have documented evidence of approval.

  • Is a Ketos tool steel ring used for the system performance test and is there documentation available which provides evidence that it is certified to Ketos tool steel ring requirements?

  • Is the magnetic particle system performance checked at least daily or prior to use by testing the Ketos tool steel ring showing the required holes per maximum allowable amperage setting?

    Compliance Assessment Guidance: The maximum amperage values specified in the table shall not be exceeded.
    AISI 01‘Ketos’ Maximum Amperage Indicated
    #3 Hole @ 1400 Amps
    #5 Hole @ 2500 Amps
    #6 Hole @ 3400 Amps

  • Are records of this test on file and do they indicate acceptable results?

    Compliance Assessment Guidance: Records of this check shall be on file. The actual number of holes shall be recorded for this check; “OK” or some other mark is not acceptable.

  • Is an AS5282 steel ring used for the system performance test, and is there documentation available that provides evidence that it is properly certified to AS5282 requirements?

  • Is the AS 5282 steel ring free of damage or corrosion which would affect its use?

  • Is the magnetic particle system performance checked at least daily or prior to use by testing the AS 5282 steel ring showing the required holes per maximum allowable amperage setting?

    AS 5282 Maximum Amperage
    #3 Hole @ 500 Amps
    #5 Hole @1000 Amps
    #6 Hole @1500 Amps
    #7 Hole @2500 Amps
    #9 Hole @3500 Amps

    Compliance Assessment Guidance: The maximum amperage values specified in the table shall not be exceeded.

  • Are records of this test on file and do they indicate acceptable results?

    Compliance Assessment Guidance: Auditor to verify the minimum number of holes required at each power setting are discernible. Any hole indications above and beyond the minimum number of holes that are recorded, are for information only and not cause for a nonconformance.

  • Is an alternate test device (TP 1-4, known defective part or other standard listed in Question #1) used to monitor the system performance?

    Compliance Assessment Guidance: If a Ketos tool steel ring or AS 5282 steel ring is not used to monitor the system performance, then an alternative test device, such as TP 1-4, known defective part or other standard listed in 6.2.1 shall be used.

  • Is the magnetic particle system performance checked at least daily or prior to use?

  • Does the performance of the test device used meet or exceed the original defined baseline?

    Compliance Assessment Guidance: Test devices shall have pre-determined current values for the indications/defects, acceptance criteria defined and approval by customer.

  • Is the device used free of damage or corrosion that would affect its use?

  • Are records of this test on file and do they indicate acceptable results?

    Compliance Assessment Guidance: The recording of the results of this test shall be in accordance with customer requirements.

6.3 Processing Area

  • Is the inspection performed following all processes that could adversely affect the part (Heat Treat, Forming, Machining, Welding, etc)?

    Compliance Assessment Guidance: NA for independent test facilities.

  • Are all parts cleaned prior to inspection as applicable to remove paint, scale, oil, dirt and other foreign materials that may interfere with the inspection process?

  • Are parts plugged or masked if required?

7.0 Compliance

7.1 Information

  • Compliance Assessment Guidance: The supplier shall perform representative inspections from current production to determine compliance with these requirements. These parts shall be selected to represent a variety of Nadcap participating customer requirements and several different types of processing equipment if more than one
    magnetic particle machine is in use at this facility. Borrowing hardware from one company to another to demonstrate compliance is not acceptable; unless there is objective evidence the design authority has authorized movement of the hardware to the company undergoing the audit. Investigate the purchase order specifications to
    identify any customer unique acceptance, process control, or procedure requirements applicable to these parts.
    Witness the facility's ability to perform inspection of these parts in accordance with the requirements.
    If no production hardware is available, compliance jobs may be identified as N/A under the following circumstances (explanation must be provided by auditor):
    - Supplier must provide evidence that they have tried to obtain parts for the audit. Evidence could be copies of emails / communication to the customer (or Subscriber) indicating such. Evidence the customer (Subscriber) has responded. If supplier has done due diligence no additional action is required. On the second consecutive occurrence supplier must have evidence of task group concurrence of reason why. If not a minor nonconformance will be issued.
    - For internal audits, if no production parts are being processed during the audit, the auditor may audit a recently processed job's documentation package and associated paperwork to satisfy this portion of the audit.

    It is expected that the auditor shall review and follow traceability from the purchase order to completion of the NDT process or final certification by reviewing as a minimum the items listed below. The auditor shall verify that the process applied complies with the procedural system established by the company in terms of flow down, customer specification retrieval (as applicable), inspection identification, etc.

    a) Purchase Order
    b) Drawing (if applicable)
    c) Work Order
    d) Process Specifications and Revision
    e) Internal Procedures and Revision
    f) Lot / Batch / Serial Number:
    g) Applicable Procedures / Techniques / Work Instructions
    h) Travelers / Route Cards
    i) Inspection Log

  • Provide the following documentation for auditor review for each of the parts being tested during the compliance portion of the audit: Note: EC-LR materials shall not leave the supplier’s facility.

    a. Copy of completed technique card or supplier procedure cover page with evidence of customer approval if required.

    b. Copy of the applicable page from the completed shop traveler or work order.

    c. If neither a or b above indicate the process and acceptance standard and their revision status, then the document that shows the link to this data shall also be reviewed.

7.2 Compliance

  • Compliance

  • Customer:

  • End User:

  • Purchase Order Number

  • Work Order/ Job Number:

  • Lot/ Batch/ Serial Number:

  • Process Specification(s) and Revision

  • Internal Procedure(s) and Revision

  • Acceptance Specification/ Drawing, Revision, and Class/ Grade

  • Part Description:

  • Part Number and revision:

  • Inspector Name and Level:

  • Date Performed:

7.3 Customer Specifications Compliance Assessment Guidance: The auditor shall verify compliance to each of these requirements by direct observation.

  • Is the facility using the appropriate specification(s) and revision(s) as required by the contract document?

    Compliance Assessment Guidance: This shall be confirmed by the auditor by reviewing the customer P.O. and End User drawing if available.

  • If the facility is working to any deviations, have they been approved by the customer?

    Compliance Assessment Guidance: The auditor shall confirm documented customer approval, this may be in the form of a written communication, technique approval or by a formal deviation from the End User.

  • Were the applicable work instructions/routings/shop travelers/techniques/procedures, acceptance criteria and unique customer requirements, made available to the magnetic particle inspectors?

    Compliance Assessment Guidance: The term “available” means that these documents are within easy access by the technicians. These documents are available and are used to perform the inspections, not used from memory.

  • If written procedures and/or techniques require review and/or approval by the Cognizant Engineering Organization, is that approval evident?

    Compliance Assessment Guidance: This shall be investigated and confirmed by the auditor by reviewing the last ten part numbers shipped.

  • If applicable, are part specific drawing inspection and/or acceptance notes being flowed down and followed by the inspectors?

    Compliance Assessment Guidance: This shall be investigated and confirmed by the auditor.

  • Was there evidence of compliance to the document control procedure?

  • If applicable, were any and all specification, drawing, procedure or technique changes authorized?

    Compliance Assessment Guidance: Auditor to confirm approval.

7.4 Inspection Process Compliance Assessment Guidance: The auditor shall verify compliance to each of these requirements by direct observation.

  • Do applicable Work Orders/ Shop travelers and technique cards contain or provide traceability to the following as a minimum?
    - Part number/ material identification
    - Specification reference
    - Inspection acceptance requirements
    - Correct sequence of operations

7.5 Part Processing Compliance Assessment Guidance: The auditor shall verify compliance to each of these requirements by direct observation.

  • Did the inspector(s) review, as applicable, the specification(s), technique sheet, and procedure(s) prior to inspecting the part?

  • Are parts being cleaned in accordance with applicable work instructions/procedure prior to inspection?

  • Were all parts clean?

    Compliance Assessment Guidance: The auditor shall confirm the cleanliness of the parts prior to inspection by whatever means are available and reasonable.

  • Was the magnetic particle suspension properly agitated?

    Compliance Assessment Guidance: The magnetic particle suspension shall be agitated throughout to provide a uniform concentration of particles in suspension as demonstrated via the concentration result.

  • When using multidirectional magnetization techniques, was the technique verified to ensure that all applicable surfaces can be effectively inspected?

    Compliance Assessment Guidance: This is accomplished by verifying the field direction, strength, and balance in multidirectional magnetization using either of the following:
    • Test parts having known or artificial discontinuities of the type, size, and location specified in the acceptance requirements.
    • AS 5371 shims

  • Were parts properly magnetized in accordance with the procedure or technique sheet?

  • Was suspension properly applied to the parts?

    Compliance Assessment Guidance: The suspension shall be applied to the surface of the part(s) in a manner providing total coverage. The suspension shall not be applied using pressure of such magnitude that would cause excessive splashing.

  • Did the inspector(s) adhere to the requirement of not wearing photochromatic eye glasses or permanently darkened lenses?

    Compliance Assessment Guidance: This is not intended to prohibit the use of eyeglasses with lenses treated to absorb ultraviolet light.

  • Did the inspector(s) accustom their eyes to darkness for at least one minute before performing any inspection requiring the use of black light?

    Compliance Assessment Guidance: On entering a darkened inspection area and each time the general illumination in the inspection area is extinguished 1 minute dark adaptation is required. Where specifications permit, local light sources that do not interfere with the inspectors vision may be used without subsequent timed dark adaptation and where the evaluation process is carried out independently of the inspection process no dark adaptation is required during evaluation. A timing device is required for eye adaptation monitoring, but evidence of calibration is not required.Timed eye adaptation is not required for any process control checks (eg system performance)

  • If required, were parts demagnetized between each operation?

    Compliance Assessment Guidance: Parts shall be demagnetized between each operation where the strength of the magnetizing field is not sufficient to overcome the residual field of the previous magnetization.

  • If applicable, when current is passed directly through the part (direct head shot) was care exercised to prevent burning/arcing of the part at the contact areas?

    Compliance Assessment Guidance: When current is passed directly through the part (direct head shot), burning/arcing between the contact areas of the machine and the part shall not occur.

7.6 Inspection Evaluation Process Compliance Assessment Guidance: The following evaluation process shall be determined by direct observation and by researching the specifications, procedures and other customer documents that are applicable and required to reach an educated answer to each question.

  • Was the black light intensity measured at the time of this survey, at least 1200 μW/cm2 at the inspection surface?

  • Were all areas of the part inspected per the technique sheet or procedure?

  • If applicable, did the inspector(s) properly evaluate every relevant indication in accordance with the customer standard?

  • Was the specific acceptance criteria properly understood by the inspector(s)?

    Compliance Assessment Guidance: The auditor is expected to confirm understanding by whatever means are required. This may be possible by observation or in some cases may require the auditor to ask the inspector(s) questions regarding the criteria and how it is to be used.

  • Were precautions taken when parts were handled during inspection not to smear or obliterate indications?

  • If applicable, were indications not meeting the acceptance criteria marked on the part and/or appropriately documented?

    Compliance Assessment Guidance: The auditor is expected to validate that the appropriate marking materials are utilized in accordance with customer requirements.

  • After evaluation, were all parts demagnetized and exhibit no more than an absolute value of 3 gauss or 240 A/m as determined by the use of a field indicator on the surface of the part?

7.7 Post Cleaning Compliance Assessment Guidance: The auditor shall verify compliance to this requirement by direct observation.

  • Were parts properly cleaned after magnetic particle inspection to remove magnetic particle residues from holes, crevices, passage ways, etc?

    Compliance Assessment Guidance: Cleaning shall be done with a suitable solvent or by other means with all plugs, masking, or other processing aids removed with care as they may affect the intended use of the part.

  • After inspection and appropriate cleaning, were parts properly protected from corrosion or damage?

7.8 Inspector Qualification

  • Were the inspection personnel certified to the correct levels for the work they were performing?

    Compliance Assessment Guidance: This shall be verified by review of the certification records.

  • Were all non-certified or in-training personnel observed performing magnetic particle process operations properly supervised?

    Compliance Assessment Guidance: This shall be determined by direct observation

  • Were all personnel who require near vision correction to pass the visual acuity exam wearing vision correction for detection and evaluation purposes during testing/inspections?

    Compliance Assessment Guidance: The auditor shall verify that corrective lenses were used if required. NA only where none of the inspection personnel witnessed working required correction lenses. “Near vision correction” refers to the glasses or contacts that were required to pass the vision test. It is required that such correction is worn during all testing/inspection at 1x. Therefore, magnification that requires self-focus may be used as an aid in interpretation with or without vision correction.

7.9 Inspection Status

  • Were symbols and/or marking methods used to denote magnetic particle inspection status?

  • Were all inspection results properly recorded and traceable to the parts?

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