Definition Preventive vs. Predictive Maintenance - What is the difference? TS 16949 - 7.5.1.4.

R

Rosana

#1
what is the difference between Preventive and Predictive maintenance?

can someone explain this to me with an example?


Thank you

Rosana :bigwave:
 
Elsmar Forum Sponsor
S

Sporty

#2
Per ISO/TS16949,
Predictive Maintenance: activities based on process data aimed at the avoidance of maintenance problems by prediction of likely failure modes to prevent disruption of production.

Preventive Maintenance: action taken to avoid causes of equipment failure and unplanned interruptions to production.

Predictive would be looking at data and trying to predict what might go wrong, like a weld tip that fails at approximately 500 welds.....you would put in a program to replace weld tips at 450 welds.....

Preventive is a program, whether monthly, daily, yearly.....where you perform maintenance to keep your equipment running smoothly.....change oil, clean, etc....

I hope this helps.
 
P

paulnguyen

#4
Hi Rosana,

IMO, both preventive and predictive maintenance are activities that involve inspection, repair if necessary, of a given subject.

The differences are how often and the sourced data that conclude the activity.

Predictive maintenance is resulted in known failure facts or historical failure data. From those data, we have known that the subject IS going to fail. and the frequency is set from there.

Preventive maintenance is regular frequency inspection activity set by recommendation, experience or common practice.

Example of this is the case of our car. Changing oil every 6 months and replacing tires every 80,000 Km are cases of predictive maintenace because we know that if we don't do that the car will give us trouble.

Checking the oil level every month (some cases, daily) to see if there is any leak, visual inspection on tires every morning to see if there is any nail, etc. is the case of preventive maintenance. Again, the frequency is based on each individual car condition, road condition in the driving area.

That was my thought, see if anybody has other opinions? or better way to explain it.

Paul N.
 
D

Dean P.

#5
Paul,

I see it a little differently than you. Say you have a piece of equipment with a gearbox. You change the gearbox oil every 6 months to keep the oil fresh. This is preventive maintenance.

You also analyze the gearbox oil for the presence of metal each time you change it. You know that when you metal content reaches a certain point, it is time to replace the gears. This is predictive maintenance. Basically, predictive maintenance is something you can track on an X-Y graph, and look for a trend when there is a known point of failure.

In your car example, you rotate the tires every 10K as a preventive measure. You inspect and record the tread depth, and once you reach a certain limit, you replace the tires (this is predictive). Based on the data, you can predict the date of failure, and thus do your preventive maintenance before you get there. Does this make sense?
 
P

paulnguyen

#6
Hi Dean,

I've received your point about the analysis, study, trend to predict failure for the predictive maintenance activity.

It is still a little cloudy for me regarding the changing oil every 6 months to keep it fresh. From what source of data that the frequency of 6 month arises? Is the gear box still functioning normally if I don't (or I forget to) change it until 12 months later?

If there is a study on the oil vicosity and conclude that it needs to be changed on the gearbox at a given interval, wouldn't you consider it a predictive maintenance?

Or, maybe we are talking about 2 different cases. If there is a prediction based on study, historical data, that is predictive mainternance.

Regards,

Paul N.
 
D

Dean P.

#7
That's how I see it, Paul. Preventive is something you do because you know that if you neglect it, things will go wrong (ie. changing your oil, greasing equipment). However, predictive is based on actual data, and can predict the exact point of failure, which allows you to plan you activites to avoid any downtime.

The 6 months timeframe is usually a 'best practice' as provided by the OEM, and may be based on data, however we are not collecting the data so it is a preventive maintenance that we do. If we sampled our oil and had it tested for viscosity, etc., and saw a trend in the data, then we could predict when we need to change the oil - predictive maint.

Either way you look at it, I think it is one of the areas that everyone has trouble with during an audit (at least we always did!). Good luck.
 
D

dewie

#10
Once I get result from one predictive like to change welding tip every 500 spots...Then I set this to a maintaimnace program.

Could I say that the result of predictive maintainance is set to be a preventive maintainance item in the next review of PM plan for next year?
:bonk:
 
Thread starter Similar threads Forum Replies Date
M TS 16949 Clause 7.5.1.4 Preventive and Predictive Maintenance - Requirements Scope IATF 16949 - Automotive Quality Systems Standard 3
T Preventive Tool Maintenance - Preventive and Predictive Maintenance requirements Manufacturing and Related Processes 7
D How to interpret TS Clause 7.5.1.4 Preventive and Predictive Maintenance? IATF 16949 - Automotive Quality Systems Standard 8
M Definition Predictive Maintenance vs Preventive Maintenance - Definitions Definitions, Acronyms, Abbreviations and Interpretations Listed Alphabetically 3
D Definition Preventive Maintenance vs. Predictive Maintenance - Distinction between Definitions, Acronyms, Abbreviations and Interpretations Listed Alphabetically 20
S Definition Predictive vs. Preventive Maintenance - TS 16949 Clause 7.5.1 - Definitions of Definitions, Acronyms, Abbreviations and Interpretations Listed Alphabetically 32
F Preventive and Predictive Maintenance - Benchmarking Partner Benchmarking 6
F QS-9000 Clause 4.9.g.1 - Preventive Maintenance - Tool Wear Predictive Maintenance QS-9000 - American Automotive Manufacturers Standard 1
M Preventive and Predictive Maintenance - Information on procedures relating to 4.9.g.1 QS-9000 - American Automotive Manufacturers Standard 16
kedarg6500 Corrective Action (CA) vs. Preventive (Predictive) Action (CAPA) Preventive Action and Continuous Improvement 18
J CQI-7 - ISO/TS 16949 Implementation Guide and preventive and predictive IATF 16949 - Automotive Quality Systems Standard 3
J Corrective Action vs. Preventive (Predictive) Action (CAPA) - A Definitive Discussion Preventive Action and Continuous Improvement 177
C If it doesn't prevent a non-conformance, is it a preventive action? IATF 16949 - Automotive Quality Systems Standard 13
S Are there ISO9001:2015 Requirements for Preventive Maintenance? ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 36
R Evaluating the need for preventive action Preventive Action and Continuous Improvement 3
GURU SDI Rust preventive oil mixed with kerosene Problem Solving, Root Cause Fault and Failure Analysis 2
B Stakeholder Initiated Corrective and Preventive Action Misc. Quality Assurance and Business Systems Related Topics 5
B Corrective and Preventive Action (CAPA) A Key Process of the Quality Management System Dec 17... Training - Internal, External, Online and Distance Learning 0
Jimmy123 FMEA - Preventive vs Detection Control FMEA and Control Plans 7
D Preventive Maintenance Implementation 21 CFR Part 820 - US FDA Quality System Regulations (QSR) 5
M Minitab tool to evaluate PM (Preventive Maintenance) process Using Minitab Software 6
M Training in 8D Problem Solving as a Preventive Action? Problem Solving, Root Cause Fault and Failure Analysis 9
J If Corrective and Preventive Action were truly Effective IATF 16949 - Automotive Quality Systems Standard 3
R Preventive Action - confusing ISO 13485:2016 - Medical Device Quality Management Systems 5
T Proactive / Preventive Post Market Surveillance question ISO 13485:2016 - Medical Device Quality Management Systems 4
Q Preventive Action - How to call the prevention when there is not a clause ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 5
M Preventive Maintenance Spreadsheet in Excel Quality Assurance and Compliance Software Tools and Solutions 2
somashekar The Preventive Action Demystified ISO 13485:2016 - Medical Device Quality Management Systems 8
Q Evaluating Effectiveness of a Preventive Action after Closure Preventive Action and Continuous Improvement 7
A Preventive Action and Risk Assessment Audit Process Audits and Layered Process Audits 5
K CAPA (Corrective and Preventive Action) - ISO 13485 Nonconformance and Corrective Action 1
J Software and Methods for Tracking CAPA (Corrective and Preventive Action) items US Food and Drug Administration (FDA) 3
A Preventive Action or Corrective Action - Paper cuts Nonconformance and Corrective Action 14
H Combined Procedure - Control of Non-conforming Product, Corrective and Preventive Document Control Systems, Procedures, Forms and Templates 14
M Corrective and Preventive Action - Prevent Recurrence is not Preventive Action? Nonconformance and Corrective Action 24
K Definition Correction, Corrective Action and Preventive Action - Definition of terms Definitions, Acronyms, Abbreviations and Interpretations Listed Alphabetically 28
F Software recommendations for corrective and preventive action Quality Assurance and Compliance Software Tools and Solutions 2
K Corrective and preventive action for Non Conformance on PFMEA FMEA and Control Plans 30
B Struggling With Writing PA (Preventive Action) Procedure Preventive Action and Continuous Improvement 11
E Can anyone share a Preventive Action Form or Template ? AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 3
H Corrective and Preventive Actions Process Examples IATF 16949 - Automotive Quality Systems Standard 2
J Continuous Improvement vs. Preventive Actions - Differences Preventive Action and Continuous Improvement 3
E Manufacturer Responsibility (vs. User/Customer) for Preventive Maintenance/Repair 21 CFR Part 820 - US FDA Quality System Regulations (QSR) 4
W Compliance to 8.5.2 Corrective action 8.5.3 Preventive action ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 13
J Is a Procedure required for Corrective, Preventive, and Non Conformities ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 9
P Customer Complaint Preventive Action Assistance Preventive Action and Continuous Improvement 3
A Assessing a Preventive Maintenance Strategy - Reliability or Maintenance Statistics Reliability Analysis - Predictions, Testing and Standards 2
T Corrective Action and Preventive Action in a Holding Company Nonconformance and Corrective Action 6
O Corrective Actions identifed as Preventive Actions Nonconformance and Corrective Action 10
S How to determine Preventive Maintenance and Calibration Grace Periods General Measurement Device and Calibration Topics 4

Similar threads

Top Bottom