Reliability Fundamentals Flashcards
Customer service and product delivery would be measured by what quality triangle component?
Time
What is considered an ideal batch size in a continuous flow operation?
One Piece is considere ideal
(II - 73)
The 5 why technique illustrates that
The solution (failure cause) to a problem can often be found upstream of an immediate symptom (failure mode) (II - 53)
Listed below are some of the most widely reconized forms of muda or non- value added activities.
Which one would unlikely result in poor product quality?
Motion and waiting (II - 71)
What is a major management employee safety resonsibility?
Promote employee safety through training and education
II - 5/7
The floor of a small shop looks dirty, disorganized and messy. The manager tells you that this is ok, they will perform their annual 5S day as soon as they finish a current large order.
You tell the manager this is not really 5S because:
5S is systematic and formal
(II - 75)
Reliability is considered the duration or propability of failure free performance, …
under stated conditions
II - 6
Root cause failure analysis is necessary to identify and correct basic problems. Usually a priority of failure mode is established.
This classic or traditional approach to improvement results in ..
Defect reduction
II - 47/50
Identify the most difficult limitation in achieving continous flow.
Existing equipment
(II - 73 and 79)
The reliablity specification that only applies to situations where individual component failure does not cause total failure is called ..
Service life
II - 42/43
System engineering can be applied to which of the following?
The design and development of software and hardware. (II - 82/84)
A failure free period of operation implies:
A period of time in which the propability of failure is some small value
(II - 6/7)
If a failure is found to be caused by a more severe environment than the original specification
Evaluate other customers uses,
to dermine if the severe environment is usual
(II - 44/51)
One could say that the underlying objective of TPM is:
The near elimination of the six big equipment effectiveness losses.
(II - 79)
Reliability assurance is:
The exercise of positive and deliberate measures to provide confidence
that a specified reliability will be obtained
(II - 2/4)
A measure of the degree to which an item is in the operable and committable state at the start of a mission, when the mission is called for a random time is called:
Dependability
(II - 25, 33, 60, 63)
The reliability engineer`s ultimate goal in most organizations may be best expressed as:
The analysis and optimization of full life cycle phases. (II - 54/56)
Measures of availability include:
Achieved (II - 63)
Your design handbook does not have sufficient information on a part that is being considered for a new design. Which activity would be undertaken at this point?
Perform a reliability demonstration test (II - 8/14)
Process problems were discovered in a specific process step. The Quality Manager orders that an inspector be positioned at that process step to perform 100% inspection. This is an example of:
An immediate corrective action to contain the problem (II - 44/49)
The principal lean diagnostic tool for a complex manufacturing operation would be a:
Value stream map.
II - 77
An system has a MTBF = 8000 h, MTTR = 120 h and MMT = 230 h. Determine the potential availability (MMT = Mean Maintenance Ation Time)
Ai = MTBF / (MTBF + MTTR) = 0.9852
In a design team environment, the reliability function can influence product reliability principally by
Integrating the reliability requirements into product design.
(II - 82/84)
The condition where an item is able to function but is not required to function is called?
Dormant state
II - 25/26
How does poka-yoke respond to human error?
By catching human error before it becomes a defect
Which of the following can be used to determine the MTTR?
Mean time between failures (MTBF) and potential availability (A) (II - 63)
A standard which establishes uniform criteria for a reliability program and provides
guidelines for the preparation and implementation of the reliability programm is:
MIL-STD-785 (II - 19/21)
Availability of a system at constant failure rates is roughly the:
Product of the individual subsystem availabilities
You are the presently an ASQ Section Chairperson. Your supervisor, your companys director of quality is very proud of the company`s recent quality efforts which included ISO 9001 registration and the top quality award from the state. He requested that you to announce theses achievements at the next ASQ Section meeting. As the ASQ Section Chair, your response should be which ?
If I clarify my position, then I can do so
Supplier reliability is best based upon:
Stable and capable processess (II - 19/21)
All the actions performed as a result of failure to restore an item to a specific condition is known as:
Corrective Maintenance (II - 29)
A failure free period of operation implies:
A period of time in which the propability of failure is some small value (II - 6/7)
Maintenance action rate is calculated as the:
Reciprocal of mean-time-between-maintenance-action
Specifically, up-time ratio is a measure of:
Availability
A lowered rejection rate following corrective action:
May be unrelated to the corrective action (II - 47/52)
In the midpoint of the quality triangle one would find:
Nothing (II - 68)
Availability can be defined as:
A precentage (II - 63/64)
According to the definition of reliability, performance over the expected or intended life is one criterion. In order to obtain a measurement for reliability the actual life (t) must be compared to which of the following?
Required life (II-6/7 & 33)
Which term is best for defining the reliability of a repairable system such as a personal computer’ (II-63/65)
MTBF
The big difference between FMEA and QFD is that only QFD
Focuses on the VOC
When a requirement allows 1% of a product to fail during the warranty period, a reliability engineer can confirm compliance by calculation the
Survivor Function
Rank order form first to last reliability steps on the NPD process ..
- ) Develop primary reliability requirements
- ) Conduct accelerated testing (ALT)
- ) Analyze warranty cost
- ) Develope reliability predictions
Which of the following tools is used early in the design phase to help guide the design process?
Life cycle costing
The act of identifying systems or process with the same or similar problem and then applying a proven corrective action is which of the following?
Standardizing corrective actions
Product reliability requirements are driven by customer expectations, industry standads and which additional requirement?
Regulatory
When using data collection in solving a reliability problem, what would be the ideal last step?
Performing root cause analysis
All the actions performed as a result of failure to restore an item to a specific condition is known as:
Corrective maintenance
The product development process may be viewed as a trade-off between competing projects requirements.
These requirements include: (4)
Time to develop,
warranty goals,
product performance,
maintenance goals
Maintenance is most closely related to which of the following elements of system effectiveness?
Operational readiness
A = MTBMA / MTBMA + MDT
