36th

International Electronic Manufacturing Technology Conference, 2014

Effective Maintenance Strategy to Improve Performance Through RCM Concept

Siva Kumar S Nadarajan

ON Semiconductor, SCG Industries (M) Sdn Bhd,

Lot 122, Senawang Industrial Estate, 70450 Seremban, Negeri Sembilan, MALAYSIA

Email: sivakumar.sn@onsemi.com

Tel: +60-6-6821954; Fax: +60-6-678 2262

Abstract

Semiconductor industries has evolved over the years not

only in technology front, but also on cost competitiveness,

faster cycle time, operational efficiencies. Semiconductor

industry has adapted many strategies like, Total Productive

Maintenance (TPM), Six Sigma quality, lean manufacturing

and many more. In general, industry responded well to the

market changes by adopting these strategies to meet the ever

demanding challenges of different sectors like computing,

communication, consumer electronics and etc. However, in

the recent years, use of electronic components in automotive

and medical industry has changed the semiconductor

landscape significantly and pushed the limits further on

product reliability, which further challenges semiconductor

industry to look beyond the conventional manufacturing

process and controls.

Tighter process controls, change management system,

etc. became prime focus items to entertain stringent industry

requirement. Even though these activities helped to improve

or prevent quality spills but there are still reported, which

prompted to look into every aspect of manufacturing

process.

Since the process and methods are built around

equipment, now became the area of focus to look into the

existing maintenance methodologies.

Comparison done with other industries to assess the

similarities and gaps in maintenance system and interesting

maintenance strategy and results are observed in airline

industry, which has one of the best and proven track records

for safety and reliability. This prompted us to look into the

maintenance strategy that ensure aircraft is always safe and

reliable, which heavily utilize concept called Reliability

Centered Maintenance or in short RCM. The fundamental

difference between the conventional maintenance versus the

RCM approach is that in RCM, activities are done to ensure

the machine or an asset continues to do what is supposed to

do rather than doing maintenance activities to prevent it from

going down. RCM uses a very structured way of identifying

critical part and to establish appropriate methodology to

ensure the performance standards This paper explains

concept RCM methodology is being used in semiconductor

manufacturing industry to improve equipment performance

(reduction of downtime).

1. Introduction

As the semiconductor industry experience intense

pressure to improve quality at lower cost within shortest

cycle time. In the recent years, electronic industries

penetrated deeper into the automotive industries. With

aggressive use of electronics in automotive segment, pushed

the industries from quality product to product reliability.

Reliable equipment performance start to play an important

role as the conventional equipment maintenance practice and

procedures of the bygone era may no longer be effective.

New method has been developed to maintain reliable

machine performance using RCM methodology, which

stands for Reliability Centered Maintenance. Even though

RCM concept has been used widely in airline industries

since the year 1960, many other industries like mining, oil &

gas, nuclear, etc adopted this concept at the later stage, its

relatively a new concept to semiconductor industry.

2. Semiconductor Industry Expectation.

Semiconductor industry has seen a tremendous growth

and development in the past two decades, however, growth

accompanied by many challenges to be competitive in terms

of cost as well as quality. These challenges pushed the

semiconductor manufacturing to look into ways and means

to reduce cost and the industry responded well by working

on operational efficiency improvement, scrap reduction

(Yield improvement), waste elimination etc by implementing

some of the programs like TPM, Lean manufacturing, Six

Sigma, new technology introduction. All these activities

helped the industry to survive the harsh and demanding

market expectations. The challenge never stop here as the

industry going through an era or higher expectation due to

the increasing use of electronics in automotive and medical

industries from the conventional computing, communication

and consumer electronics. Expectation for these two

industries are different compared with the other sectors as

the safety of human life is at stake. As a result, more stringer

requirements are set by these sectors to ensure the products

are reliable.

From the standard cost, quality and cycle time, now

reliability of the product takes the center stage and

expectation from the manufacturing is on the rise.

Product reliability heavily depends on the manufacturing

process, methods, people and equipment. This paper explore

on how to make the equipment reliable to ensure the

products comes out from the machines are of good quality

and most importantly reliable.

Exploring other industries to benchmark :

Before trying out on the best maintenance strategy,

author looked across other industries to benchmark the

maintenance practices to compare notes between the other

industry versus semiconductor manufacturing. Among all

the industries evaluated, airline industry’s maintenance

system caught the attention due to the near perfect records

on safety owe to a reliable maintenance strategy called

RCM (Reliability Centered Maintenance).

3. What is RCM?

Reliability-Centered Maintenance (RCM) is the process

of determining the most effective maintenance approach.

The RCM philosophy employs Preventive Maintenance

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International Electronic Manufacturing Technology Conference, 2014

(PM), Predictive Maintenance (PdM), Real-time Monitoring

(RTM1), Run-to-Failure (RTF- also called reactive

maintenance) and Proactive Maintenance techniques in an

integrated manner to increase the probability that a machine

or component will function in the required manner over its

design life cycle with a minimum of maintenance. The goal

of the philosophy is to provide the stated function of the

facility, with the required reliability and availability at the

lowest cost. RCM requires that maintenance decisions be

based on maintenance requirements supported by sound

technical and economic justification.

4. History of RCM

Reliability Centered Maintenance originated in the

Airline industry in the 1960’s. By the late 1950’s, the cost of

Maintenance activities in this industry had become high

enough to warrant a special investigation into the

effectiveness of those activities. Accordingly, in 1960, a task

force was formed consisting of representatives of both the

airlines and the FAA to investigate the capabilities of

preventive maintenance. The establishment of this task force

subsequently led to the development of a series of guidelines

for airlines and aircraft manufacturers to use, when

establishing maintenance schedules for their aircraft.

This led to the 747 Maintenance Steering Group (MSG)

document MSG-1; Handbook: Maintenance Evaluation and

Program Development from the Air Transport Association in

1968. MSG-1 was used to develop the maintenance program

for the Boeing 747 aircraft, the first maintenance program to

apply RCM concepts. MSG-2, the next revision, was used to

develop the maintenance programs for the Lockheed L-1011

and the Douglas DC-10. The success of this program is

demonstrated by comparing maintenance requirements of a

DC-8 aircraft, maintained using standard maintenance

techniques, and the DC-10 aircraft, maintained using MSG-2

guidelines. The DC-8 aircraft has 339 items that require an

overhaul, verses only seven items on a DC-10. Using another

example, the original Boeing 747 required 66,000 labor

hours on major structural inspections before a major heavy

inspection at 20,000 operating hours. In comparison, the

DC-8 - a smaller and less sophisticated aircraft using

standard maintenance

programs of the day required more than 4 million labor

hours before reaching 20,000 operating hours.

In 1974 the US Department of Defense commissioned

United Airlines to write a report on the processes used in the

civil aviation industry for the development of maintenance

programs for aircraft. This report,written by Stan Nowlan

and Howard Heap and published in 1978, was entitled

Reliability Centered Condition Based Maintenance, or

CBM.

Maintenance, and has become the report upon which all

subsequent Reliability Centered Maintenance approaches

have been based. What Nowlan and Heap found was many

types of failures could not be prevented no matter how

intensive the maintenance activities. Additionally it was

discovered that for many items the probability of failure did

not increase with age. Consequently, a maintenance program

based on age will have little, if any effect on the failure rate.

There are a total of six classical failures identified by F.

Stanley Nowlan and Howard F. Heap, in their Reliability

Centered maintenance paper. RCM helps to identify these

different types of failures as explained in the figure-1 to have

an appropriate maintenance strategy like,

preventive maintenance,

Predictive maintenance

Real-time monitoring

Run-To-Failure (RTF AKA Reactive

maintenance)

Proactive maintenance

Figure 1

Understanding failure rates and failure characteristics allows

the determination of an appropriate strategy for managing

the failure mode (e.g., RCM refers to this as the failure

management strategy).Developing and using this

understanding is fundamental to RCM and critical to

improving equipment reliability. It is no longer considered to

be true that the more an item is overhauled, the less likely it

is to fail. Unless there is a dominant age-related failure

mode, age limits do little or nothing to improve the

reliability of complex items. Sometimes, scheduled

overhauls can actually increase overall failure rates by

introducing infant mortality and/or human errors into

otherwise stable systems.

In RCM, the failure management strategy can

Consist of:

i) Appropriate proactive maintenance tasks,

ii) Equipment redesigns or modifications, or

iii) Other operational improvements.

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International Electronic Manufacturing Technology Conference, 2014

The purpose of the proactive maintenance tasks in the failure

management strategy is to (1) prevent failures before they

occur or detect the onset of failures in sufficient time so that

the failure can be managed before it occurs. Equipment

redesigns, modifications and operational improvements

(RCM) refers to these as one-time changes) are attempts to

improve equipment whose failure rates are too high or for

which proactive maintenance is not effective/efficient.

5. Equipment Failure

The key issues in determining whether a specific failure

management strategy is effective are the

following:

i) Is the failure management strategy technically feasible?

ii) Is an acceptable level of risk achieved when the

failure management strategy is implemented?

iii) Is the failure management strategy cost-effective?

In addition to proactive maintenance tasks and one-time

changes, servicing tasks and routine inspections may be

critical to the failure management strategy. These activities

help ensure the equipment failure rate and failure

characteristics are as anticipated. For example, the failure

rate and failure pattern for a bearing drastically changes if it

is not properly lubricated.

These proactive maintenance tasks, run-to-failure, one-

time changes, and servicing and routine inspections are to be

carefully identified and implemented to ensure machine

reliability.

6.0 Defining Reliability-centered Maintenance

Reliability-centered maintenance is a process of

systematically analyzing an engineered system to

understand:

i) Its functions

ii) The failure modes of its equipment that support these

functions

iii) How then to choose an optimal course of maintenance to

prevent the failure modes from

occurring or to detect the failure mode before a failure

occurs

iv) How to determine spare holding requirements

v) How to periodically refine and modify existing

maintenance over time

7.0 Objective of RCM :

The objective of RCM is to achieve reliability for all of the

operating modes of a system.

An RCM analysis, when properly conducted, should answer

the following seven questions:

1. What are the system functions and associated

performance standards?

2. How can the system fail to fulfill these functions?

3. What can cause a functional failure?

4. What happens when a failure occurs?

5. What might the consequence be when the failure

occurs?

6. What can be done to detect and prevent the failure?

7. What should be done if a maintenance task cannot

be found?

Step-1 : Modular map

The first step in RCM methodology is to dissect an

asset (machine) into assemblies, sub-assemblies (of

machine) and then to component level. Breaking down

the machine into sub-assemblies and to components

level will give a complete view and understanding of the

components, its function of the assembly. This

activities help to identify and understand every

component in a machine and its assemblies / sub-

assemblies. Examples of the modules are shown in the

figure 2, 3 & 4. Modular mapping is the fist and

important step of RCM.

Figure 2

Figure 3

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International Electronic Manufacturing Technology Conference, 2014

*1) Collet assy 1) Movement X&Y table assy *1) Indexer track *1)Ejector pin assy 1) Epoxy dispenser

1.1) Gauge bearing 1.1) DC servo motor 1.1) Y-tension plate 1.1) Pepperpot 1.1) Mushahsi Dispenser unit

1.2) Collet holder 1.2) Ball screw 1.2) Hold dow n clamp

1.3) Touch dow n sensor 1.3) Motor coupling 1.3) Input count sensor 1.3) Ejector shaft holder 2) Dispenser assy

1.4) Die detect sensor 1.4) Table bearing 1.4) Insert 2.1) Adapter tube

1.5) Vacuum tube 1.5) Sensor(s) 1.5) Thermostat 2.2) Epoxy syringe holder & Knob

*2) Plunger assy 2.3) Force spring

*2) Movement X&Y table assy 2) Wafer holder assy *2) Forward/reverse assy 3.1 Bearing 2.4) Touch down sensor

2.1) DC servo motor 2.1) Expand ring 2.1) DC Servo motor 3.2 Guide rod

2.2) Ball screw 2.2) Expand ring cylinder 2.2) Ball screw 3.3 Motor MD06 3) Movement Y & Z assy

2.3) Motor coupling 2.3) Expand ring photo sensor 2.3) Sensor(s) 3.4 Guide bearing 3.1) Servo motor

2.4) Table bearing 2.4) Air regulator 2.4) Bearing(s) 3.5 Spring 3.2) Ball screw

2.5) Sensor(s) 2.5) Solenoid valve 3.6 Photo sensor 3.3) Motor coupling

*3) Up/down assy 3.4) Slider bearing

*3) Solenoid valve assy 3.1) DC Servo motor *3) Vertical Motion Linear Way 3.5) Sensor(s)

3.1) Solenoid valve(s) 3.2) CAM(s) 3.1 Slider Bearing

3.2) Filter(s) 3.3) Ball screw 3.2 Photo sensor

3.3) Actuator(s) 3.4) Sensor(s)

3.5) Bearing(s) *4) Plunger solenoid assy

*4) Z assy 4.1 Solenoid valve for vacum ejector pot

4.1) Servo motor *4) Feeder assy 4.2 Solenoid valve for air release air betw een pot&mylar

4.2) Ball screw 4.1) Finger(s) 4.3 Solenoid valve up&dow n Plunger Unit.

4.3) Motor coupling 4.2) Feeder adjusment kit

4.4) Slider bearing 4.3) Feeder overload sensor

4.5) Sensor(s) 4.4) Linear bushing

4.5) Bearing(s)

*5) Theta assy

5.1) Servo motor

5.2) Motor coupling

5.3) Theta belt

5.4) Theta drive assy

5.5) Sensor(s)

6) Camera assy

6.1) Camera lens

6.2) Light

6.3) Camera holder

1.2) Ejector pin holder

1.4) Ejector holder

SHINKAWA SDW-35 DIE BONDER

DIE BOND HEAD ASSY

WAFER HANDLER ASSY

DIE BOND INDEXER ASSY

1) Collet assy2) Movement X&Y table assy

3) Solenoid valve assy4) Z assy5) Theta assy6) Camera assy

1) Movement X&Y table assy2)Wafer holder assy

1) Indexer track2)Forw ard/reverse assy

3)Up/dow n assy4) Feeder assy

PLUNGER UP ASSY EPOXY HEAD ASSY

1)Ejector pin assy2) Plunger assy

3) Vertical motion linear w ay4) Plunger solenoid assy

1) Epoxy dispenser2) Dispenser assy

3) Movement Y & Z assy

Figure 4

Step-2 :

Developing RCM formats :

RCM format, one of the most powerful tool with many

sections that help to define function of an asset, it’s

performance standard, failure modes, failure effects using

FMECA concept as well as listing the consequences of all

failure modes which will be discussed in details. Seven steps

of RCM for continuous improvement is described in figure

5

Figure 5

Step 2.1 : Select equipment :

This is one of the first important step to choose an

asset (or machine) based on criticality of the operations

either it can be a bottle neck operations or quality and

reliability expectation from customer. All other items

can be documented in the RCM format as per figure 6

Step 2.2 : Define function :

Function of an asset or machine has to be clearly

defined in this stage by putting down why in first place

this asset exists. Once this step is done, state the

performance standard of this asset or machine and what

is expected from this machine to do ?

After defining function, list down the performance

standard by clearly stating the expectation on required

performance standard of the overall asset or machine.

Performance standard cannot be higher or greater than

the asset or machine’s capability. This step will give a

clear idea on what this asset or machine can do and with

what performance standard.

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International Electronic Manufacturing Technology Conference, 2014

Figure 6

Next step is to list down the sub-assemblies as

worked out in the modular map. Each sub assembly’s

function and performance standard should be defined

after which, what could go wrong if this sub assembly

fails to meet the required performance standard? This

has to be captured in the functional failure column in

RCM checklist.

Step 2.3 Identify failure :

In this step, failure effects for each failure modes

(components) have to be determined. Each failure

modes may have one or multiple failure effects. If

possible, list down requirements or specifications of

each failure mode (component).

Step 2.4 Assess failure effects and consequences:

Failure effects assessment have to be done using

FMECA (Failure Mode and Effects Criticality

Analysis) methodology. RCM does not stop with

selecting the critical components based on highest RPN

number alone but, goes beyond to look into the

consequences of the failure like, impact to safety,

environment, operational or non-operational.

Safety issues supersede everything and will be

ranked number one.

Ranking will be done based on the combination of

RPN and consequences like whether the asset or

machine continue to run (still operational) due to part

deterioration or asset or machine ceases operation due to

failed part.

Ranking helps to identify and prioritize on critical

failure modes that needs to be addressed to ensure the

asset or machine still continue to run to the set

performance standard.

Step 2.5 Decide maintenance plan

Once complete the ranking, all identified

maintenance strategy for critical components of the asset

or machine and determine planned maintenance task.

For a planned-maintenance task to be considered

applicable and effective, the following

Considerations must be made:

i) Is the task technically feasible to perform? The age-

to-failure relationship must be reasonably

consistent, and the task must be physically capable of

being performed.

ii) Does the task reduce the probability of failure (and

therefore the risk) to an acceptable level?

The tasks must be carried out at an interval that is less

than the age at which the equipment or

component shows a rapid increase in its conditional

probability of failure. Agreed-upon risk

acceptance criteria should be determined and recorded.

iii) Is the task cost-effective? The cost of undertaking a

task over a period of time should be less

than the total cost of the consequences of failure.

When determining whether the planned-maintenance

task should be a restoration or discard task, the

following considerations must be made:

i) Does the task ensure the reliability and performance

of the equipment? If the equipment is

restored, it must be restored to a nearly new condition.

ii) Is the task cost-effective? The cost of restoring the

equipment should be less than discarding

the equipment and replacing it with a new item.

8.0 Planned Maintenance

Determining Planned-maintenance Task Interval

One can determine the interval at which planned-

maintenance tasks should be performed using a

variety of methods:

i) Equipment manufacturer information

ii) Expert opinion

iii) Published reliability data

iv) Statistical analysis of actual failure history, including

the MTTF data.

Regulatory requirements (e.g., classification society

Rules) should also be considered, especially if

data are insufficient to determine a planned-maintenance

interval. In addition, the potential consequence (e.g., the

resulting effect) and the risk associated should be

considered when determining a planned-maintenance

interval. RCM employs two concepts when determining

a planned maintenance interval: safe life limit and

economic life limit. These limits are illustrated in figure

7 & 8,

.

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International Electronic Manufacturing Technology Conference, 2014

Figure 7

Figure 8

If there is no data available on useful life of the

critical parts, it is advisable to have a periodic checking

(combined with some experience) on this part using P-F

curve as per figure 9. To establish life span of unknown

parts, it is advisable to define the control limit and

specification limit of the sub assembly or the component

(measured value , for the case of bearing, vibration

could be one of the measurement). This method helps to

identify the useful life of the part. Time from potential

failure to functional failure (unable to meet the function

of the sub assembly) will also determine the minimum

leadtime of the critical parts.

Figure 9

9.0 Determine critical parts :

RCM format consists of all the parts of the machine

(failure modes) and it’s impact to the quality of the

products (failure effects) when it is out of normal

operating range or condition. It is not feasible to have

maintenance strategy for all the components in the

machine. RCM helps to prioritize based on the FMECA

and failure consequences methodology. However, to

speed up the improvement process, different approach

was adopted by assessing the current line issues

(machine breakdown) and prioritized top highest

downtime contribution. Based on the issues identified,

failure effects are chosen to look into the failure modes

from the RCM checklist. By doing this exercise, helps to

identify critical parts of an asset or machine that has

direct or indirect impact to the performance standard of

the asset.

Once the critical parts are identified, it is important

to assign relevant maintenance strategy as discussed

above to ensure the sub-assemblies or assemblies

continue to perform the same way as what per the set

performance standard of an asset or machine.

10.0 Implementation plan :

Before implementation, all critical parts identified

must have a well documented procedure and all relevant

personnel needs to be trained clearly on these activities.

All critical activities has to be documented in the

working checklist for respective person’s activities and

tracking purposes. It is important that the check lis

contains all critical sub assemblies, critical components,

specification, what to check and how to check as per

below figure 10

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International Electronic Manufacturing Technology Conference, 2014

MACHINE NO : _________TECH NAME : _______________ SHINKAWA SDW 35(WB) RCM CHECKLIST

SUB ITEM ww ww ww ww ww ww ww ww ww ww ww ww ww ww ww ww ww ww ww ww ww ww ww ww ww ww

ASSEMBLY DESCRIPTION 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

Wire clamper Clean the wire clamp The wire clamp should be

assy W faces using a lint free paper. free from any dust.

It should hold the wire firmly.

Tubing W Check connection Tubing should be well installed

Nozzle W Visual Check Make sure no dented/damages

2 M Physically check the

sparking.

Physically check the

M torch electrode condition.

M Check the torch

electrode insulator.

Wire size

*FAB spec 0.8mil = 46-56um

1.3mil = 65-75um

1.5mil = 65-75um

2.0mil = 100-125 4) 4)

3 Physically check the There shouldn't be any dent,

tranducer for any damaged. scratch or any another sign

of damaged.

Check the tranducer It should be from 0.30 - 0.80

oscillation standard.

Clean the shaft using

alcohol swab.

4

Use push-pull gauge (200g) to push

the table assy in Y direction. Reading

should be less than 160 gmf

1st Half Year

Bonding assy

Check the

table

smoothnessSA

Turn OFF the drive and

check the X-direction mvmt. Use push-pull gauge (200g) to push

the table assy in X direction. Reading

should be less than 160 gmf

SA

Turn OFF the drive and

check the Y-direction mvmt.

Bonding assy

Tranducer

Q

Q

QThe shaft should be free from any

dust & dirt.

1st Quarter 2nd Quarter

5) 5) 5) 5) 5) 5)

4) 4) 4) 4)

3) 3) 3) 3) 3) 3)

2) 2) 2) 2) 2) 2)

1) 1) 1) 1) 1) 1)

E-torch assy Torch

electrode

The sparking should be blue(Au)

and voilet(Cu) in colour.

The surface of the torch electrode

should be fine & smooth and free

from any scratches.

Insulator should not be torn or

damage

M Perform manual bond and

buy-off FAB for 5 balls

April May JuneJanuary February March

# FREQ HOW / METHOD STANDARD

Wire clamp

faces

Forming Gas

Kit

Figure 10

It is highly advisable to have a measured value for

critical items. It will be an easy task to make judgment if

the assembly or sub assembly starts to deviate from the

required standard.

11.0 Results and discussion :

Pilot module chosen to evaluate effectiveness of

RCM strategy in manufacturing industry. The package

chose for evaluation was one of the bottleneck, missing

output due to performance issues. Data collected to

understand and identify loss category.

Based on the losses, critical components were

identified and appropriate maintenance strategy was

designed and implemented. Minor stoppages and

maintenance downtime records were taken as output

response for this activities.

Data before and after RCM implementation is shown

in the figure 11, 12 & 13

Significant improvement seen on two critical wafer

technology device with overall equipment downtime

reduction of 42%.

Zener Non RCM RCM

%

improvement

DVM 257 113 56%

NSOP 78 61 22%

FVM 65 23 65%

PRS 42 72 -71%

NSOL 40 11 74%

CC 36 37 -3%

W/BREAK 33 5 86%

551 320.5 42% Figure 11

Switching Non RCM RCM

%

improvement

DVM 640 299 53%

PRS 500 182 64%

CC 210 93 56%

NSOP 56 31 45%

NSOL 34 7 79%

FVM 27 16 41%

W/BREAK 20 25 -25%

1486 653 56% Figure 12

Figure 13

With 100% implementation of RCM checklist for

this critical line, overall down time of the machine

reduced and sustained at around 50%.

Similar approach used on other operations like trim

& form machine, final test machines, to verify the

impact of RCM activities, which also showed similar

improvement.

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International Electronic Manufacturing Technology Conference, 2014

Figure 14

RCM methodology helped to identify critical

components easily that causes failure. Every component

affecting a particular module / sub assembly is clearly

documented helps to identify critical components. This

methodology helped to identify all potential parts that

could cause potential failure to have an appropiate

maintenance strategy that helped to reduce machine

downtime significantly and effectively.

Figure 15

Figure 16

Summary and benefit of RCM

12.0 Summary :

However, total RCM concept is not just more than

just reducing downtime, but it focuses on process used to

determine what must be done to ensure that any physical

asset continues to do what its users wanted it to do in its

present operating context

RCM is a method which identifies applicable and

effective maintenance tasks needed to maintain the

inherent reliability of equipment at minimum cost.

RCM helps to clearly define the primary function

(the main reason why the asset exists). Once the primary

function established, asset modules and its functions

needs to be defined using a modular map with all the

sub-assemblies and components to clearly Identify

functional failure, failure modes and failure effects

(similar to FMEA concept) of each components. RPN

numbers assigned to each failure effect helps to prioritize

activities or actions needed for each failure mode. RCM

format also looks into the consequences of each failure

modes like, safety, impact to environment and will the

asset still be functional or non-functional. Each failure

modes are ranked based on the input from RPN and

consequences for further improvement.

Maintenance standards with proper frequency is

established to ensure that the asset perform it’s function

based on what the user intend to do.

With the implementation of RCM, once could expect

the following:

Greater safety and environmental integrity

Enhanced understanding of equipment

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International Electronic Manufacturing Technology Conference, 2014

Increased availability and reliability

Greater maintenance efficiency

Longer equipment life

Complete maintenance strategy.

Better parts utilization and improved COO

(Cost Of Ownership)

13.0 Conclusion:

An effective RCM strategy helps company to stay

competitive by utilizing the asset to it’s maximum

potential to achieve high quality and at a reasonable cost.

14.0 Acknowledgement

Author likes to thank ON semiconductor senior

management team for their support and trust in trying out

new strategy.

15.0 References

1. http://mainsaver.com/pdf/Reliability_Centered_Mai

ntenance_White_Paper.pdf

2. http://www.mainsaver.com/pdf/Reliability_Centere

d_Maintenance_White_Paper.pdf

3. Reliability Centered Maintenance February 2000,

by The National

4. Reliability-Centered Maintenance, by United

Airlines, for Office

5. Introduction to Reliability-Centered The Colinson

Corporation.

6. Industry reliability program, Federal aviation

agency, Nov 7, 1961

7. T.D Matterson and F.S Nowlan, current trends in

airline maintenance programs, AIAA commercial

aircraft design and operations meeting, Los

Angeles, California, June 12-14, 1967

8. Handbook: Maintenance evaluation and program

development (MSG-1), 747 maintenance steering

group, Air transport association