Unit 5 Flashcards
What is the primary objective of the maintenance department?
- ensure all productive resources perform at a high operating level, increase availability, increase performance, increase quality
- fixing & check ups
What are pros to maintence departments?
- reduced inventory
- lower operating costs
- faster, more dependable throughput
- improved capacity
- higher productivity
- improved quality
- continuous improvements
What are the 3 primary types of maintenance?
- corrective: all industrial equipment is exposed to wear or breakdowns
- preventative: the maintenance mission cannot only be repairing the breakdowns.
- autonomous
What are the types of corrective maintenance? and explain them?
urgent repairs- getting machines up a running after breakdowns, remainder of task schedule for later
scheduled corrective- result of urgent repairs, when rest of work is to be done.
What are types of preventative maintenance? explain.
- systematic preventative maintenance: goes by a replacement policy of the parts in the machines. eg. component needs to be replaced every 300 working hours.
- conditional/ predictive maintenance: goes by visual cues or defects in products. eg. temperature, noises, cracks, pressure losses
What is autonomous maintenance? explain.
- PM orders carried out by the production workers, maintenance orders
- they should be simple and graphically represented, many inspection tests should be carried out everyday
What is TPM?
Total Productive Maintenance
-proactive approach that aims to identify issues as soon as possible and plans to prevent issues before they happen
What are the objectives of TPM?
- zero defects
- zero work-related accidents
- zero breakdowns
What are the keys of TPM
- maximize the OEE, quality, performance and availability
- autonomous maintenance implementation
- preventative engineering
- training workers for maintenance improvements
- initial equipment management
What is RCM
Reliability-Centered Maintenance
What is the objective of RCM?
to determine the most effective maintenance tasks for critical components
What do you need prior to implementing RCM?
- complete maintenance and breakdown records for each piece of equipment
- a preventative maintenance program that runs properly
What are the tools to help RCM
- FMEA
- Reliability analysis
- statistical techniques
What is FMEA and how is it used in RCM?
Failure Mode and Effects Analysis
-method to analyze and discover all potential failure modes of a system (design, equipment processes), the effects of the failures, how to correct the effects on the system
How do you calculate RPN?
severity # x probability # x detections #
-the higher the RPN the greater the risk
