Engineering And Maintenance

Question 1

Impact of maintenance

Answer 1

-plant availability
-product costs
-quality of product
-safety
-environmental impact

Question 2

Maintenance triggers

Answer 2

• breakdown
• time
• event
• usage
• condition

Question 3

No maintenance approach

Answer 3

No specific maintenance plan in place. Maintenance takes place when triggered.

Question 4

Run to failure (breakdown approach) (RTF)

Answer 4

A plant and resources occur if a breakdown occurs, but equipment is only attended to if and when it breaks down. Must have back ups ready or lots of SOH.

Question 5

Preventative approache (PM)

Answer 5

Plant maintained according to plane to prevent equipment failure and breakdown. Maintenance scheduled based on elapsed time, amount of product produced, or the number of operating hours. Reduced unforeseen downtime and maintenance costs.

Question 6

Predictive approach (PdM)

Answer 6

Scheduled maintenance based in data from equipment monitoring the plant and process to predict when failures will occur and prevent them. Warning limits set for equipment (eg overheating pump). Keeps equipment in service far as long as possible between repairs. Fewest disruptions in production.

Question 7

CMMS- computerised maintenance management systems

Answer 7

Sophisticated versions of maintenance systems that organise and record plant maintenance

Question 8

TPM - total productive maintenance

Answer 8

“Total” refers to both maintenance professionals and pertains staff. Goals: zero breakdowns, zero defects, reduced emergency/unscheduled maintenance, eliminate failures and wage due to equipment operations, zero accidents

Question 9

OEE - overall equipment effectiveness

Answer 9

Availability x performance x quality

Question 10

RCM - reliability centred maintenance

Answer 10

Approach that uses a team of maintenance professionals and operators to determine how things fail and what the consequences are. Combines PM, PdM and proactive maintenance.