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DRIVE-SPRING 2014
PROGRAMMBADS (SEM
4/SEM 6) MBAFLEX/ MBAN2 (SEM 4) PGDOMN (SEM 2)
SUBJECT CODE &
NAME-OM0015 – MAINTENANCE MANAGEMENT
BK ID-B1340
CREDITS & MARKS-4
CREDITS AND 60 MARKS
Q1 Write short
notes on:
a)
Quality versus maintenance
b)
Mean Time to Repair (MTTR)
c)
Fault tree analysis
d)
Systematic equipment replacement
program
(A Quality versus
maintenance Mean Time to Repair (MTTR) Fault tree analysis Systematic equipment
replacement program) 10 (2.5 marks each)
Answer.
a) Quality
versus maintenance
Good quality maintenance
contributes significantly to quality assurance. Poor maintenance of machines
may lead to erratic working of certain parts leading to costly failures.
Erratic working, say for example, an aggregate of the machine running with
heavy vibrations has the direct effect of premature wear, breakage of cutting tool,
etc. The product produced from such a machine will have bad surface finish,
resulting in rejections. Further, working by ignoring the defect may give rise
to catastrophic accidents like broken tool flying out and injuring operator/s
nearby.
Q2 Evaluate the
relationships between degree of maintenance and various costs from the graph
given below:
(Analysis of
various relationships, Summarization of cost implications of maintenance
practices) 5,5
Answer.
Analysis of
various relationships
As can be seen from the above
figure, the degree of maintenance when plotted versus different types of losses
with
Q3 Explain
Condition Based Maintenance (CBM).
(A Explain when is
this type of maintenance done, Explain condition monitoring and its methods, Explain
advantages and disadvantages of CBM) 2, 2, 6( 2 marks for condition monitoring
+ 2 marks each for methods of condition monitoring)
Answer.
Condition Based
Maintenance
In CBM also known as Dynamic
predictive maintenance or Diagnostic maintenance plant, the maintenance
activity starts just after some problems arise, but much before the possible
breakdown. The main function of condition monitoring is to provide the
knowledge of a machine and its rate of change. An ability to forecast the
machine
Q4 Write short
notes on:
a)
Costs associated with inventory
control of spare parts
b)
Problems in maintenance
scheduling
c)
Universal maintenance standards
d)
Asset life cycle management
(A Costs associated
with inventory control of spare parts, Problems in maintenance scheduling, Universal
maintenance standards, Asset life cycle management) 10
Answer.
Costs associated
with inventory control of spare parts
An organisation keeps spare parts
for replacement of defective and worn-out parts of equipment. For holding spare
parts in the inventory, the funds are tied up and this investment on spares is
a recurring one and may be planned as short term investment. Maintaining the
spare parts in a store also incurs some additional costs. Cost associated with
inventory
Q5 Explain the
steps to autonomous maintenance.
(A Listing the
steps to autonomous maintenance, Explanation of steps)1.25, 8.75(1.25 marks for
each step)
Answer.
List of Steps to
autonomous maintenance
1.
Initial
cleanup.
2.
Counter
measures for contamination and hard to do CLIT (clean, lubricate, inspect and
test)
3.
Apply
tentative standards.
4. Carry out general inspection.
5. Do general process inspection.
6.
Standardise
the activity.
7.
Improve
and maintain.
Q6. Explain pillar
1 (autonomous maintenance -JH) of TPM implementation.
(Explanation of the
term autonomous maintenance, Listing of the objectives of autonomous maintenance,
Steps of autonomous maintenance) 1, 2, 7
Answer.
Autonomous
maintenance
Autonomous maintenance is a
phrase coined by the Japanese institute of plant maintenance (JIPM), to
describe the shift towards the machine operators for maintaining their own
machines or equipments. The Japanese phrase used is JISHU-
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