WorksheetsMaintenance Operations Certification
Total questions: 66
Worksheet time: 33mins
When a machine involves a number of different subsystems (pneumatic, electrical, computer, etc.) Which troubleshooting method can often reduce the time to find the cause of a failure?
Step by Step
Measurement by Comparison
Shotgun
Divide and Conquer (half split)
Which agency certifies personal protective equipment for workplace use?
EPA
OSHA
EPCRA
NIOSHA
Companies often ______ to create a baseline measurements for improvements in machine performance
Establish a Metric
Write standard Operating Procedures
Perform a Quality System Audit
Use ISO Standards
______ is a force inside the fastener that tries to return it to its original length
Torque
Compression
Elasticity
Tension
What protection does a metatarsal guard provide?
Hand
Shin
Arm
Foot
What is the pressure indicated on this gauge?
45 kPa
650 psi
4200 psi
4200 kPa
When looking for machine malfunctions, you should start with _______
Powering the machine
The 5 Senses
the machine manual
A troubleshooting flowchart
When a sling is used at an angle, part of the lifting force becomes a ____
Spreading force
Crushing force
Pulling force
Floating force
What is done with data collected during predictive maintenance monitoring?
Only stored if within acceptable tolerances
Analyzed to check if values are within acceptable tolerances
Passed on to the safety officer
Passed on to the machines OEM
A _____ is used to prevent a bolt and nut fastener from loosening due to vibration.
Lock Washer
Flat Washer
Fender Washer
Finishing Washer
What type of maintenance is the process of performing inspections and tests to determine the current condition of the machine?
Preventive
Predictive
Total Productive
Reactive
A particular machine with a history of shutdowns only during the first hours of the first shift would lead a technician to do what?
Check ambient conditions
Interview the operator
Review startup procedures
All the above
Read the Gauge
6 LPM
22 LPM
40 LPM
20 LPM
76.2 mm is equal to _______ inches.
2.5
3.2
3.0
3.5
Which document helps ensure that operations are performed consistently?
Machine specs
Standard Operating Procedure
Operator's manual
Maintenance log
The maintenance schedule of a machine should be _______.
Accessible to maintenance personnel
All of the above
Stored per company protocols
Updated as necessary
What is the first thing maintenance personnel should do when investigating a machine malfunction?
Ask the operator about the machine's operation and symptoms
Make sure the machine power is removed
Clear obstacles from the work area around the machine
Get the operating manual
What does an oval on a troubleshooting flowchart represent?
Start or end
Question
Decision
Action
Where may machine maintenance documentation be located?
Attached to the machine
In the maintenance office
In a supervisor's office
All of the above
What type of wrench is used to tighten socket head cap screws?
Box end
Open end
Allen
Socket
Which of the following would NOT be considered a type of preventive maintenance?
Checking the oil
Checking gaskets
Tightening belts
Replacing a failed component
A flowchart can be helpful when using which method of troubleshooting?
Shotgun
Output-back
Symptom and cause
Half-split
Which of the following describes predictive maintenance?
Requires the replacement of parts before they fail
Requires constant monitoring by maintenance personnel
It helps keep spare parts inventory up to date
Conditions are monitored and used to determine which parts to replace
What type of maintenance program puts the responsibility of daily maintenance in the hands of the machine operators?
Self-performing
Automatic
Autonomous
Productive
Which type of predictive maintenance monitoring is performed at specific time intervals?
Scheduled monitoring
Random monitoring
Continuous monitoring
Intermittent monitoring
An entrant should not enter a confined space that has an oxygen level less than _______.
20 percent
80.5 percent
19.5 percent
17 percent
The manufacturer's serial number and model of a machine are most often used to locate the _______.
Manufacturer vendor
Service manuals
Machine's location in plant
All of the above
What type of maintenance activities should be performed daily?
Predictive maintenance
Risk-oriented maintenance
Preventive maintenance
Reactive maintenance
Which manual will typically include troubleshooting procedures?
Maintenance log
Machine specs
Operator's manual
Installation manual
Which of the following is a use of a work order?
Organize work tasks
Assign work tasks
Monitor work tasks
All the above
The amount of exposure to a chemical without the unreasonable risk of injury is listed on the SDS as _______.
MXT (Maximum exposure Time)
TLV (Threshold Limit Value)
MCE (Maximum Chemical Exposure)
TOE (Time of Exposure)
Which EN/IEC machine stop category describes a condition where the machine comes to a controlled stop under power and then power is removed to the actuators?
Category 0
Category 1
Category 2
Category 3
The intent of preventive maintenance is to prevent _______.
Scheduled stoppage
Unplanned downtime
Idling loss
Rework
Which stop function on a machine causes it to stop after finishing its current process and resume operations when a start signal is received?
Automatic
E-Stop
Manual
Cycle stop
Where would a maintenance technician find information regarding the handling of all lubricants and their associated safety requirements?
SDS sheet
EPA documentation
Supervisors office
OSHA documentation
What is the correct tightening sequence to use with this bolt pattern?
A,B,C,D,E,F,G,H
A,F,B,G,D,C,E,H
A,F,B,G,D,C,E,H
H,D,B,F,G,C,E,A
Using the scale in the figure, what is the dimension of the block? (Rounded to the nearest 1/32?)
2.7% inches
21.5/32 inches
2.4/8 cm
24.8 mm
Grade ...... chain is the only chain approved for lifting loads overhead.
40
60
70
80
If an authorized employee does not test equipment for zero energy state after it is locked out ___
The circuit will not operate
They should be retrained
They should apply a tag stating so
It does not matter because the lockout prevents energizing the power
What is not a function of a computer maintenance management system?
Track performed procedures
Generate work orders
Monitor operator performance
Schedule periodic maintenance
Which of the following is a predictive maintenance test?
Vibration analysis
Acoustic analysis
Thermography
All of the above
An SAE bolt has its grade designated by ___ stamped on its head.
Two letters
One number
Two numbers
Radial lines
The assembler can often prevent contaminated/defective parts from reaching the customer by performing a
Water break test
Grammatic test
Particle counter analysis
Visual inspection
What function would a machine operator likely perform on an HMI?
Change a program
Monitor machine status
None of the above
Modify ladder logic
When a small fire is noticed near a cabinet of flammable materials, you should first
Sound the alarm
Put it out with a portable fire extinguisher
Cover the flammable materials
Call for help
Standard operating procedures are detailed documents that are
Developed by OSHA
For safety only
Developed by the company
Department-wide
The choker hitch sling configuration is popular because of the __
Variable length of the line
Elasticity of the components
Higher load capacity
Clamping effect on the load
To ensure a true vertical lift, a __ hoist should be used.
Single-log
Double-reeved
Horizontal
Single-reeved
HMI databases that store error logs and alarm codes are good places to find ___
Maintenance charts.
Startup procedures.
Machine history
Total operating hours.
The unit of measurement for fluid and air contaminant size is the __
Micron
Milliliter
Millimeter
Milligram
The first step in the troubleshooting process is to …
Identify the symptoms.
Determine the actual fault.
Document the event.
Review process documentation.
When choosing a socket to lock-in a link bolt, a 6-point is
Less likely to round off points on bolt head
More likely to round off points on bolt head
Used only for SAE fasteners
Used only for metric fasteners
___ is a value expressed as a percentage that describes how productive a piece of equipment actually is compared to what it could be if operated at its maximum capability.
Overall equipment efficiency (OEE)
Optimal efficiency rating (OER)
Equipment capacity (EC)
Equipment productiveness (EP)
The ..... has a cross-shaped tip.
Phillips head screwdriver
Torx driver
Flat Head screwdriver
Allen wrench
According to ANSI standard B3010, a rigging hook should be replaced when its throat dimension increases by ___ or more.
2%
5%
15%
25%
Examples of ___ tolerance include straightness of a shaft or the flatness of a surface.
Form
Profile
Orientation
Location
___ is an important part of inspection that helps identify machinery issues.
Quality checks
Autonomous maintenance
Periodic maintenance
Cleaning
What does a diamond on a troubleshooting flowchart represent?
Question
Start or end
Step
Action
A major component of predictive maintenance is ___
Condition monitoring
Breakdown prevention
Failure monitoring
Defect detection
When a ...... is tightened against the hex nut, it creates tension in the threaded fastener that clamps the nuts together.
Castle Nut
Lock Nut
Slotted
Jam Nut
A pneumatic lockout dump valve vents downstream to the atmosphere when it is ___
Half closed
Open
All of the above
Closed
Which type of hard hat protects you up to 2,200 volts of electricity?
Class C
Class D
Class E
Class C
Using the cutting line shown, which view represents the correct sectional view?
A
B
C
D
The best document to use when evaluating if the operator is running a machine correctly is (are) the ___.
Machine operating manual
Production guidelines
Machine tolerance charts
Maintenance logs
On a multi-view drawing, a(n) ___ line is shown using alternating long and short dashed lines.
Hidden
Leader
Object
Center
What is the last step of the troubleshooting process?
Document the event
Determine the actual fault
Identify the symptoms
Review process documentation
