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Title: Ed van den Enden


1
Ed van den Enden
  • PPAP TRAINING
  • Production Part Approval Process 4th Edition

PPAP WORKBOOK TRAINING Rev 6 dd 06/06/2014
2
Its the goal of this lecture to
  • to show you the basic content and the rules of
    the Production Part Approval Process
  • and to explain the purpose and the background
  • but this lecture will not save you from learning
    how to practically use this system

3
Notes to this lecture
  • this lecture was created for training purposes
    only
  • it is not an extensive description, but
  • a help for getting started
  • view of contents, basic idea and goals
  • The content of this lecture shall not be used as
    a reference for daily work
  • Please make sure that you are working only with
    original latest level documents
  • This lecture does not refer to customer specific
    requirements, nor to special PPAP
    rules/requirements for bulk materials, tires, nor
    truck industry!

4
What is PPAP?
  • Production Part Approval Process
  • Standard used to formally reduce risks prior to
    product or service release, in a team oriented
    manner using well established tools and
    techniques
  • Initially developed by AIAG (Auto Industry Action
    Group) in 1993 with input from the Big 3 - Ford,
    Chrysler, and GM
  • AIAGs 4th edition effective June 1, 2006 is the
    most recent version
  • PPAP is part of the Donaldson Supplier Business
    Operating Standard (S.B.O.S.S.)

5
Content
1. Introduction 2. Content of the PPAP 1.
General 2. PPAP Process Requirements 3. Customer
Notification and Submission Requirements 4.
Submission to Customer - Levels of Evidence 5.
Part Submission Status 6. Record Retention 3.
Summary of the Process 4. The Documentation and
its Preparation 5. Summary 6. Internet Links
6
1 Introduction
  • it is the purpose of advanced quality management
    to prevent that unreliable designs or processes
    are used in serial production
  • therefore it is necessary to have one extensive,
    strict approval process for new or changed
    designs or processes
  • inevitably this process causes some
    administration work
  • but its worth while because it reduces the
    production of muda!

7
1 Introduction
Saving by taking advantage of the Rule Of The
10 The cost of the remedy of a defect
increases tenfold with every step, the project
advances!
8
1 Introduction
Savings by avoiding the 71 muda
9
1 Introduction
Savings by avoiding to high stock
  • take space
  • raise assets employed
  • require additional searching
  • require additional administration
  • require additional transport
  • are a risk, because parts might exceed expiration
    date or become unsaleable
  • are a risk, because parts might be damaged
  • complicate the overview
  • are often a consequence of a weak process
  • cover weak process

10
1 Introduction
Requirements for Lower stock
  • ? Controlled and capable processes
  • ? Total Productive Maintenance
  • since all kind of process problems will cause
    delivery stops, if the stocks are low!

11
1 Introduction
  • satisfied customers by good quality and avoided
    muda
  • no scrap, no rework
  • constant flow of material
  • low stocks possible

12
1 Introduction
  • such an extensive and strict process is an
    obligatory requirement
  • the name of this process is
  • Production Part Approval Process

13
2. Content of the PPAP
Customer specific requirements are not discussed
in this presentation for this please lookup
SharePoint chapter Customer Requirements
14
Content
1. Introduction 2. Content of the PPAP 1.
General 2. PPAP Process Requirements 3. Customer
Notification and Submission Requirements 4.
Submission to Customer - Levels of Evidence 5.
Part Submission Status 6. Record Retention 3.
Summary of the Process 4. The Documentation and
its Preparation 5. Summary 6. Internet Links
15
PPAP is, so to speak, the goal of APD
  • APD (APQP) makes sure
  • that all requirements are recognized before the
    Product Development is started
  • that those special characteristics of the
    product are specified which influence these
    requirements
  • that it is verified again and again that the
    planned design can safely meet these
    requirements, if the special characteristics are
    within tolerance
  • that only those production processes are
    specified, which are controlled and capable
    according to SPC regarding these characteristics
  • A Readiness Review and PPAP are used to validate
    that all processes are under control and capable
  • the produced parts fulfil all requirements

16
Purpose and Applicability
  • It is the purpose of PPAP to
  • define generic requirements for production part
    approval
  • determine if all customer engineering design
    record and specification requirements are
    properly understood by the organization
  • determine that the manufacturing process has the
    potential to produce the product consistently
    meeting these requirements during an actual
    production run at the quoted production rate
  • Applicability
  • PPAP shall apply to internal and external
    organization sites supplying production
    materials, sub assemblies or customer service
    parts.For bulk material and standard catalogue
    parts, PPAP is not required unless specified by
    the APD project-team or customer. Material
    certificates and dimensional reports are the
    minimum required documents .

17
Submission of PPAP
  • Before any supply to the customer the
    organization shall obtain full approval from the
    customer for
  • Anny new serial part or serial product
  • Correction of a discrepancy or any change on
    previously submitted parts or part processes.
  • Product modified by an engineering change to
  • design records
  • specifications
  • materials
  • Any tool or equipment change or update.
  • Note If there is any question concerning the
    need for PPAP, contact the authorized customer
    representative.

18
Content
1. Introduction 2. Content of the PPAP 1.
General 2. PPAP Process Requirements 3. Customer
Notification and Submission Requirements 4.
Submission to Customer - Levels of Evidence 5.
Part Submission Status 6. Record Retention 3.
Summary of the Process 4. The Documentation and
its Preparation 5. Summary 6. Internet Links
19
2. PPAP Process Requirements
  • 2.1 Significant Production Run
  • Products for PPAP shall be taken from a
    significant production run
  • This production run shall be from one hour to
    eight hours of production, and with the specific
    production quantity to total of minimum of 300
    consecutive parts, unless otherwise specified by
    the authorized customer representative.
  • This significant production run shall be
    conducted at the production, at the production
    rate, using the production tooling, production
    gaging, production process, production materials,
    and production operators.
  • Parts from each unique production process, e.g.
    duplicate assembly line and/or work cell, each
    position of a multiple cavity die, mold, tool or
    pattern, shall be measured and representative
    parts tested

20
2. PPAP Process Requirements
  • 2.2 PPAP Requirements
  • the supplier shall meet all specified
    requirements
  • as listed in this handbook
  • and all customer-specific requirements
  • Production parts shall meet all customer
    engineering design record and specification
    requirements
  • including safety and regulatory requirements
  • If any part specification cannot be met, the
    organization shall document their problem-solving
    efforts and shall contact the authorized customer
    representative for concurrence in determination
    of appropriate corrective action.

21
Content
1. Introduction 2. Content of the PPAP 1.
General 2. PPAP Process Requirements 3.
Submission to Customer - Levels of Evidence 4.
Part Submission Status 5. Record Retention 3.
Summary of the Process 4. The Documentation and
its Preparation 5. Summary 6. Internet Links
22
3. Submission to Customer - Levels of
EvidenceThe organization shall submit the items
and/or records as specified
Level 1 Warrant only (and for designated
appearance items, an Appearance Approval Report)
submitted to the customer. Level 2 Warrant
with product samples and limited supporting data
submitted to the customer. Level 3 Warrant with
product samples and complete supporting data
submitted to the customer. Level 4 Warrant and
other requirements as defined by the customer.
Level 5 Warrant with product samples and
complete supporting data reviewed at the
organization's manufacturing location. Level 6
Customizable by Region based on circumstances.
Typically Warrant only unless noted by Donaldson
on the PSW. Used for Catalog and/or commercially
available product that may be of
supplier-propriety design, and also low-volume
limited runs.
23
3. Submission to Customer - Levels of Evidence
PPAP Element Description Level 1 Level 2 Level 3 Level 4 Level 5
1. Design records Include a copy of the current approved revision drawing with all dimensions, specifications and notes bubbled (circle with corresponding number) for reference to dimensional report. R S S R
2. Engineering Change Documents A document that shows the detailed description of the change / ECO, if any. R S S R
3. Customer Engineering approval Not used with Donaldson submissions. Where specified by the customer, the organization shall have evidence of customer engineering approval. --- --- --- --- ---
4. Design FMEA A copy of the Design Failure Mode and Effect Analysis, if applicable. R R S R
5. Process Flow Diagrams A copy of the Process Flow, indicating all steps and sequence in the fabrication process, from receiving to shipping, steps must match with PFMEA and Control Plan steps. R R S R
24
3. Submission to Customer - Levels of Evidence
PPAP Element Description Level 1 Level 2 Level 3 Level 4 Level 5
6. Process FMEA A copy of the Process Failure Mode and Effect Analysis. The PFMEA follows the Process Flow steps, and indicate "what could go wrong" during the fabrication and assembly of each component. Actions required for a) All RPN above 100 with severity 8, c)For RPN btw 100-150 need to be reviewed and preventive / corrective action taken R S S R
7. Control Plan Control Plan provides details on how the "potential issues" are checked in the incoming material, production process and during inspections of finished products, Control Plan must match the Flow Chart and P-FMEA steps. R R S R
8. Measurement System Analysis Studies Gage RR studies are required for Critical/ Significant Characteristics as defined in the Control Plan and/or Donaldson drawing. R R S R
9. Dimensional Results A list of the measurement results for all the characteristics and specifications noted on the ballooned drawing. R S S R
25
3. Submission to Customer - Levels of Evidence
PPAP Element Description Level 1 Level 2 Level 3 Level 4 Level 5
10. Material Performance Test Results Records of material certifications and/or test results for test specified on the design record or Control Plan. R S S R
11. Initial Process Studies Process Capability Studies for the critical characteristics identified on the drawing. R R S R
12. Qualified Laboratory Documentation Copy of certifications of the laboratories that performed the tests and measurements reported. R S S R
13. Appearance Approval Report AAR, If a part is a designated appearance item, appearance compliance requirements will be identified via a special purchase order notification. S S S R
14. Sample Product The organization shall provide sample product as specified by Donaldson (typically 1-3 pieces). R S S R
26
3. Submission to Customer - Levels of Evidence
PPAP Element Description Level 1 Level 2 Level 3 Level 4 Level 5
15. Master Sample The suppler shall retain an identified master sample for each position of a multiple cavity die, mold, tool or pattern. R R R R
16. Checking Aids When there are special tools for checking parts, this section shows a picture of the tool, design prints and calibration records, including dimensional report of the tool. R R R R
17. Records of Compliance With Customer Specific Requirements Not used with Donaldson submissions. Records of all applicable customer specific requirements. --- --- --- --- ---
18. PSW Upon completion of all PPAP requirements, the organization shall complete the Part Submission Warrant. S S S S R
27
Content
1. Introduction 2. Content of the PPAP 1.
General 2. PPAP Process Requirements 3.
Submission to Customer - Levels of Evidence 4.
Part Submission Status 5. Record Retention 3.
Summary of the Process 4. The Documentation and
its Preparation 5. Summary 6. Internet Links
28
4. Part Submission Status
  • Approved
  • The part meets all Donaldson requirements
  • Supplier is authorized to ship production
    quantities of the part
  • Interim Approval
  • Donaldson permits shipment of part on a limited
    time and quantity clearly in writing defined.
  • On Hold
  • SQA needs more info
  • Rejected
  • The part does not meet Donaldson requirements,
    based on the production lot from which it was
    taken and/or accompanying documentation

Production quantities may not be
shipped before Donaldson / Customer
approval
29
Content
1. Introduction 2. Content of the PPAP 1.
General 2. PPAP Process Requirements 3.
Submission to Customer - Levels of Evidence 4.
Part Submission Status 5. Record Retention 3.
Summary of the Process 4. The Documentation and
its Preparation 5. Summary 6. Internet Links
30
5. Record Retention
31
The start of using the PPAP workbook
  • Safe the Workbook template as an Excel
    Workbook.File name Donaldson Part number
    followed by Donaldson Part rev number.E.g.
    P566611-rev8-( free suffix)
  • Fill out the sheet PPAP Submission InfoTo do
    so, headers of other sheets are filled out
    automatically.
  • Most of the fields can be filled out by the
    Donaldson PPAP team

32
Electronic Submission Requirements
  • Donaldson requires that all PPAPs be submitted
    electronically ? ppap.emea_at_donaldson.com
  • Submission must be received on or prior to the
    PPAP due date
  • Review and Approval Process
  • Donaldson will attempt to review and provide
    feedback within 3 business days

33
Donaldson PPAP book
  • What is the Donaldson PPAP book?
  • An Excel spreadsheet containing templates of the
    documents suppliers are required to submit to
    Donaldson.
  • Organization formats are allowed as long these
    documents are providing the same. (Preferred
    language is English)
  • Why use the PPAP book?
  • Simplifies the process for suppliers by serving
    as a checklist of what needs to be submitted to
    Donaldson
  • Reduces the number of files to manage
  • Enables the SQA / PPAP team to quickly see if
    anything is missing

34
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35
Part Submission Warrant
  • What is It?
  • Document required for all newly tooled or revised
    products in which the supplier confirms that
    inspections and tests on production parts show
    conformance to Donaldson requirements
  • Objective or Purpose
  • Used to
  • document part approval
  • provide key information
  • declare that the parts meet specification
  • When to Use It
  • Prior to shipping production parts

Have a closer look
36
Part Submission Warrant
37
Part Submission Warrant
38
Part Submission Warrant
39
Part Submission Warrant
40
Part Submission Warrant
  • Reviewers Checklist
  • Must be completely filled out
  • Must be signed by the supplier and customer
  • Part Number must match the PO
  • Submitted at the correct revision level
  • Submitted at the correct submission level
  • Specify the reason for submission
  • Report the approval / Reject to the PPAP team and
    the APD team
  • Upload to the central Supplier or Customer PPAP
    SharePoint Site by sending to ppap.emea_at_donaldson
    .com

41
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42
Authorized Engineering Change Documents
  • The supplier shall provide authorized change
    documents for those changes not yet recorded in
    the design record, but incorporated in the
    product, part or tooling, such as
  • ECNs (must be approved, not pending)
  • Specifications (ECO)
  • Feasibility studies
  • Supplier change requests
  • Sub-assembly drawings
  • Life or reliability testing requirements

43
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44
Process Flow Diagram
  • What is It?
  • A visual diagram of the entire process from
    receiving through shipping, including outside
    processes and services
  • When to Use It
  • To understand how a process is done
  • Prior to completing the PFMEA

45
Process Flow Diagrams
46
Process Flow Diagrams
  • Reviewers Checklist
  • Process Flow must identify each step in the
    process
  • Should include abnormal handling processes
  • Scrap
  • Rework
  • Process Flow must include all phases of the
    process
  • Receiving of raw material
  • Part manufacturing
  • Offline inspections and checks
  • Assembly
  • Shipping

47
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48
Process FMEA (PFMEA) CORP QEHSDOC 014
  • What is It?
  • A tool used to identify and prioritize risk areas
    and their mitigation plans.
  • Objective or Purpose
  • Identifies potential failure modes, causes, and
    effects. Inputs come from the process flow
    diagram.
  • Identifies key inputs which positively or
    negatively affect quality, reliability and safety
    of a product or process.
  • When to Use It
  • After completion of the process flow diagram.
  • Prior to tooling for production

IMPORTANT!
The PFMEA should be completed using a
cross-functional team!
49
FMEA Origin
  • Created by NASA following Apollo 1 mission
    failure
  • Allows us to take a proactive approach to what
    can go wrong in a process and manage our risks
    better

50
Process FMEA (PFMEA)
51
PFMEA - Step 1
  • TIPS
  • There should be at least one failure mode for
    each input.

52
PFMEA - Step 2
  • TIPS
  • There should be at least one failure effect for
    each failure mode.
  • Effects should be specific, clear, and leave no
    doubt to the uninformed reviewer.

53
PFMEA - Step 3
  • TIPS
  • There should be at least one potential cause for
    each failure mode.

54
PFMEA - Step 4
  • TIPS
  • This step in the FMEA begins to identify initial
    shortcomings or gaps in the current control plan.
  • If a procedure exists, enter the document number.
  • If no current control exists, list as none.

55
PFMEA - Step 5
  • Assign Severity, Occurrence, and Detection ratings

Severity, Occurrence and Detection rating details
on next slide
56
PFMEA - Definition of Terms
  • Severity (of Effect)Severity of the effect on
    the Customer and other stakeholders (Higher Value
    Higher Severity)
  • Occurrence (of Cause)Frequency with which a
    given Cause occurs and creates Failure Mode.
    (Higher Value Higher Probability of Occurrence)
  • Detection (Capability of Current Controls) -
    ability of current Control scheme to detect the
    cause before creating the failure mode and/or the
    failure mode before suffering the effect (Higher
    Value Lower Ability to Detect)

57
An Example of Rating Definitions
Severity Occurrence Detection
Hazardous without warning Very high and almost inevitable Cannot detect or detection with very low probability
Loss of primary function High repeated failures Remote or low chance of detection
Loss of secondary function Moderate failures Low detection probability
Minor defect Occasional failures Moderate detection probability
No effect Failure unlikely Almost certain detection
Rating
High 10
Low 1
If No Controls Exist, Detection 10
Referring too 4th Edition FMEA Manual and the
scales in Donaldson PPAP workbook.
58
PFMEA - Step 6
  • TIPS
  • The RPN is used to prioritize the most critical
    risks identified in the first half of the FMEA.
  • High RPNs (100 or above) are flags to take effort
    to reduce the calculated risk.
  • Regardless of RPN, high Severity scores (gt8)
    should be given special attention.

59
Analyzing the PFMEA
  • Once the RPN Numbers are determined, they can be
    used to prioritize the most significant failure
    modes.
  • Sort the FMEA by the RPN numbers. Graphical and
    statistical tools can help the team select a
    cut-off RPN for the next steps.
  • RPN Thresholds
  • When using an RPN threshold, DO NOT forget to
    address high Severity scores

Pareto Chart
60
PFMEA Remediation Guidelines
  • SeverityCan only be improved by a design change
    to the product or process
  • OccurrenceCan only be reduced by a change which
    removes or controls a cause. Examples are
    redundancy, substituting a more reliable
    component or function or mistake-proofing.
  • DetectionCan be reduced by improving detection.
    Examples are mistake-proofing, simplification and
    statistically sound monitoring.

61
FMEA Step 7
  • Determine Actions Recommended to reduce High RPNs

62
FMEA Steps 8 and 9
  • Now recalculate your RPNs
  • based on mitigation plans.
  • TIPS
  • Continue updating the actions taken and
    resulting RPNs until all risks are at an
    acceptable level (below 100).

63
Summary Steps To Complete a FMEA
  1. For each Process Input, determine the ways in
    which the Process Step can go wrong (these are
    Failure Modes).
  2. For each Failure Mode associated with the inputs,
    determine Effects on the outputs.
  3. Identify potential Causes of each Failure Mode.
  4. List the Current Controls for each Cause.
  5. Assign Severity, Occurrence and Detection ratings
    after creating a ratings key appropriate for your
    project.
  6. Calculate RPN.
  7. Determine Recommended Actions to reduce High
    RPNs.
  8. Take appropriate Actions and Document.
  9. Recalculate RPNs.
  10. Revisit steps 7 and 8 until all the significant
    RPNs have been addressed.

64
Tips and Lessons Learned
Process FMEA (PFMEA)
  • Collaborative Effort Do not try alone, use a
    group
  • Very comprehensive Time consuming process. Take
    necessary breaks.
  • Action items are required for completion
  • Train team ahead of time by explaining scoring
    criteria
  • Proper preparation is needed for meetings
  • Summarize often FMEA is a living document

65
Process FMEA (PFMEA)
  • Reviewers Checklist
  • Verify there is a system for prioritizing risk of
    failure such as RPN numbers of 150 or above
  • Make sure that high RPN process concerns are
    carried over into the control plan
  • Make sure that all critical failure modes are
    addressed
  • Safety
  • Form, fit, function
  • Material concerns

66
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67
Control Plan
NOTE
Since processes are expected to be continuously
updated and improved, the control plan is a
living document!
68
Control Plan
Tool Interaction
Process Steps
New/Revised Process Steps
Risk Prioritized Process Steps
Process Steps
Improved Controls
New/Revised Process Steps
69
Control Plan
70
Control Plan
3 Distinct Phases
71
Control Plan
Administrative Section
72
Control Plan
Process, Machine/Tools, Characteristics
73
Control Plan
Specifications, Measurement, Sample Size
Frequency
74
Control Plan
Control Method, Reaction Plan
75
Control Plan
Audit Plans
  • Audit plans should be included in the control
    plan as a separate line.
  • Auditing is an important tool for control.
  • Process auditing should be a key element of the
    quality system of a business.
  • Audits generally cover
  • Effectiveness of controls
  • Control plan (say) vs. what is actually done (do)
  • Audits should be objective (done by internal or
    external third parties if possible).
  • Audit frequencies should be based on balancing
    level of risk (FMEA) and cost.

76
Control Plan
Reviewers Checklist
  • Use process flow diagram and PFMEA to build the
    control plan keep them aligned
  • Controls must be used to be effective. Keep it
    simple.
  • Ensure that the control plan is in the document
    control system of the business.
  • Good control plans address
  • All testing requirements - dimensional, material,
    and performance
  • All product and process characteristics at every
    step throughout the process
  • An periodical Audit. (Audit Frequency indicated
    and data stamp for next Audit given!)
  • The control method should be based on an
    effective analysis of the process
  • Such as SPC, Error Proofing, Inspection, Sampling
    Plan
  • Control plans should reference other
    documentation
  • Specifications, tooling, etc.

77
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78
Measurement System Analysis (MSA) Gage RR
79
Attribute and Variable MSA
  • Attribute Data Examples
  • Count, Pass/fail, yes/no, red/green/yellow,
    timekeeping buckets
  • Variable Data Examples
  • Physical measurement (length, width, area, )
  • Physical conditions (temperature, pressure)
  • Physical properties (strength, load, strain)
  • Continuous or non-ending

80
Measurement System Analysis (MSA)
Measurement System Variation
The observed variation in process output
measurements is not simply the variation in the
process itself it is the variation in the
process plus the variation in measurement that
results from an inadequate measurement system.
    
Observed Variation
Process Variation
81
Measurement System Analysis (MSA)
Observed Variation
Measurement System Variation
Observed Variation
Process Variation
82
Observed Variation
Measurement System Analysis (MSA)
Resolution
Precision (Variability)
Repeatability
Reproducibility
Measurement System Variation
Linearity
Accuracy (Central Location)
Observed Variation
Bias
Stability
Process Variation

83
Observed Variation
Measurement System Analysis (MSA)
Resolution
Precision (Variability)
Repeatability
Reproducibility
Measurement System Variation
Linearity
Accuracy (Central Location)
Observed Variation
Bias
Stability
Calibration Addresses Accuracy
Process Variation

84
Measurement System Analysis (MSA)
Resolution
Error in ResolutionThe inability to detect
small changes. Possible Cause Wrong measurement
device selected - divisions on scale not fine
enough to detect changes.
85
Measurement System Analysis (MSA)
Repeatability
Error in RepeatabilityThe inability to get the
same answer from repeated measurements made of
the same item under absolutely identical
conditions. Possible Cause Lack of standard
operating procedures (SOP), lack of training,
measuring system variability.
Equipment Variation
86
Measurement System Analysis (MSA)
Reproducibility
Error in ReproducibilityThe inability to get
the same answer from repeated measurements made
under various conditions from different
inspectors. Possible Cause Lack of SOP, lack of
training.
Appraiser Variation
87
Variable MSA Gage RR Study
  • Gage RR is the combined estimate of measurement
    system Repeatability and Reproducibility
  • Typically, a 3-person study is performed
  • Each person randomly measures 10 marked parts per
    trial
  • Each person can perform up to 3 trials
  • There are 3 key indicators
  • EV or Equipment Variation
  • AV or Appraiser Variation
  • Overall GRR

88
Donaldsons Gage RR Form
89
Variable MSA Gage RR Steps
  1. Select 10 items that represent the full range of
    long-term process variation.
  2. Identify the appraisers.
  3. If appropriate, calibrate the gage or verify that
    the last calibration date is valid.
  4. Open the Gage RR worksheet in the PPAP book to
    record data.
  5. Have each appraiser assess each part 3 times
    (trials first in order, second in reverse
    order, third random).
  6. Input data into the Gage RR worksheet.
  7. Enter the number of operators, trials, samples
    and specification limits
  8. Analyze data in the Gage RR worksheet.
  9. Assess MSA trust level.
  10. Take actions for improvement if necessary.

90
Steps 1 and 2 Variable MSA - Gage RR
  • Select 10 items that represent
  • the full range of long-term process
  • variation.
  • Identify the appraisers.
  • Should use individuals that actually do the
    process being tested.
  • Can also include other appraisers (supervisors,
    etc.).
  • Should have a minimum of 3 appraisers.

91
Steps 3 and 4 Variable MSA Gage RR
  • If appropriate, calibrate the gage
  • or verify that the last calibration
  • date is valid.

Open the Gage RR worksheet in the PPAP book to
record the data
92
Step 5 Variable MSA Gage RR
  • Have each appraiser assess each item 3 times.
  • Each appraiser has to work independently.
  • Items should be evaluated in random order.
  • After each appraiser completes the first
    evaluation of all items repeat the process at
    least 2 more times.
  • Do not let the appraisers see any of the data
    during the test !!

93
Steps 6 and 7 Variable MSA Gage RR
  • Input data into the Gage RR worksheet

Enter the number of operators, trials, samples
and specification limits
94
Steps 8 and 9 Variable MSA Gage RR
  • Analyze data in the Gage RR worksheet
  • Assess MSA Trust Level.
  • Red gt 30 (fail)
  • Yellow 10-30 (marginal)
  • Green lt 10 (pass)

95
Step 10 Variable MSA Gage RR
  • If the Measurement System needs improvement
  • Brainstorm with the team for improvement
    solutions.
  • Determine best practical solution (may require
    some experimentation).
  • Pilot the best solution (PDSA)
  • Implement best solution train employees.
  • Re-run the study to verify the improvement.

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Variable MSA Gage RR Example
Problem Statement
  • The sulfuric acid concentration in process tank 8
    is measured at least once per day
  • Additions/deletions of chemicals and decisions to
    shut down the process are dependent on these
    results.
  • Based on current data, we need to do an MSA.

MSA Process
A Gage RR was conducted in order to validate
the process.
  • MSA Parameters
  • (3) Operators
  • (3) Trials
  • (10) Samples

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Variable MSA Gage RR Example
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Variable MSA Gage RR Example
Repeatability (EV) Equipment Variation
Reproducibility (AV) Appraiser Variation
Repeatability Reproducibility RR
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Tips and Lessons Learned
  • Important An MSA is an analysis of the process,
    not an analysis of the people. If an MSA fails,
    the process failed.
  • A Variable MSA provides more analysis capability
    than an Attribute MSA. For this and other
    reasons, always use variable data if possible.
  • The involvement of people is the key to success.
  • Involve the people that actually work the process
  • Involve the supervision
  • Involve the suppliers and customers of the
    process
  • An MSA primarily addresses precision with limited
    accuracy information.

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MSA Gage RR
Reviewers Checklist
  • If the gage/inspection affects quality, then
    conduct a Gage RR
  • Make sure the study is recent - less than 1 year
  • Compare the control plan gages against the Gage
    RRs
  • If you question that gage, then
  • Question the technique and part sampling
  • Ask for additional studies

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Dimensional Results
103
Donaldson Dimensional Report (Critical)
Automatically Calculates Cpk!
104
Acceptance Criteria
Acceptance criteria for critical vs. non-critical
characteristics
Critical Non-Critical Decision
Red (Bad) lt1.33 lt1.00
Yellow (OK) 1.33-1.67 1.00-1.33
Green (Good) gt1.67 gt1.33
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Donaldson Dimensional Report Example
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Dimensional Results
Reviewers Checklist
  • Thirty-five critical data points 5 non-critical
    data points are required for part qualification
  • Critical and non-critical data points must be
    taken from the same 35-piece sample
  • Five parts from a production run must be shipped
    to Donaldson for verification of form, fit, and
    function
  • The same 5 parts will be used to verify both
    critical and non-critical dimensions
  • Supplier must clearly identify which of the 35
    parts are being shipped
  • Supplier should make every effort to ship 3 parts
    that represent both the low and high ends of the
    specifications for non-critical dimensions
  • Capability must be greater than 1.67 for critical
    dimensions and greater than 1.33 for non-critical
    dimensions

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Records of Material/Performance Test Results
  • Material Test Results
  • The supplier shall perform tests for all parts
    and product materials when chemical, physical, or
    metallurgical requirements are specified by the
    design record or Control Plan
  • For products with Donaldson-developed material
    specifications and/or an Donaldson-approved
    supplier list, the supplier shall procure
    materials and/or services from suppliers on that
    list
  • Performance Test Results
  • The supplier shall perform tests for all parts or
    product materials when performance or functional
    requirements are specified by the design record
    or Control Plan

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Material Results
110
Module Test Results
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Qualified Laboratory Documentation
  • Inspection and testing for PPAP shall be
    performed by a qualified laboratory as defined by
    Donaldson requirements (e.g., an accredited
    laboratory).
  • The qualified laboratory (internal or external to
    the supplier) shall have a laboratory scope and
    documentation showing that the laboratory is
    qualified for the type of measurements or tests
    conducted
  • When an external laboratory is used, the supplier
    shall submit the test results on the laboratory
    letterhead or the normal laboratory report format
  • The name of the laboratory that performed the
    tests, the date(s) of the tests, and the
    standards used to run the tests shall be
    identified.

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Appearance Approval Report
  • What is It?
  • A report completed by the supplier containing
    appearance and color criteria
  • When to Use It
  • Prior to tooling for production

IMPORTANT!
Typically only applies for parts with color,
grain, or surface appearance requirements
115
Appearance Approval Report
116
Appearance Approval Report
Tristimulus data
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Sample Production Parts
119
Sample Production Parts
  • The sample parts provided should be the same
    parts measured for the dimensional results
  • Default quantity for all submissions is 3 parts
    unless otherwise requested

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Sample Production Parts
  • Sample production parts MUST be properly
    identified
  • Include the following information on the part
    label
  • Shipping date
  • Donaldson part number
  • Quantity submitted
  • Supplier part number (optional)
  • Donaldson Part name
  • Carrier name
  • Country of origin
  • Tracking number
  • Approval markings (UL, CE, etc.) where applicable

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Part Label Example
PPAP Workbook includes these PPAP samples
submission labels. Where applicable, fields get
filled out automatically by filling out the PPAP
submission sheet.
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PPAP Summary
  • The Production Part Approval Process is an
    extensive approval process for new or changed
    designs or processes
  • It is very formalized, so it inevitably causes
    some administrative work
  • Later changes to the product or process can be
    expensive and time-consuming!

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PPAP to prevent loosing an opportunity for saving
costs
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