FMEA is
an acronym that stands for Failure Modes and Effects Analysis. It can identifies
the potential failure of a system and its effects, assesses the failures to
determine actions that would eliminate the chance of occurrence and documents
the potential failures.
It’s oriented
towards equipment rather than process. Particularly suited for mechanical and
electrical systems. FMEA systematically in identifies the consequences of
component failure on that system and to determines
the significance of each failure mode with regard to the system's performance.
It will improve the safety, Quality and Reliability.
The
purpose of this Hazard Identification system are to identify single equipment
of system failure modes and the potential effects or consequences of the
failure modes on the system or plant, AND to generate recommendation for
increasing equipment or system reliability, thus improving process safety.
Resource
requirements to do this system are;(1) Technical drawing of the
equipment / system,(2) Knowledge of equipment function and failure modes,(3) Personnel
with knowledge of system /plant function and responses to failure equipment failure
AND (4) Personnel with knowledge of FMEA methodology and analysis.
It also
can be define as the extent of the system to be analyzed. It usually performed
in relatively small steps. It requires analysts / personnel with a knowledge of
the system. It will show the functional relationships of the parts of the system
and their performance requirements.
Level
of Analysis are based on the functional structure of a system and the failure
modes are expressed as failure to perform a particular subsystem function. Primary
function is that for which the subsystem was provided and secondary function is
one which is merely a consequence of the subsystem's presence.
It will
be use to analyze Failure modes of premature
operation, failure to operate when required, intermittent operation, failure to
cease operation when required, loss of output or failure during operation, degraded
output and etc. It will looks at the likely causes and the effects on both the
components and the system, consideration is given to the relative importance of
the effects and the sequence AND safeguards against such failures and methods
of detecting them are then examined.
Reporting
of FMEA are to identify the most significant failures in terms of their effects
on the overall system, decide whether or not the existing safeguards and
detection devices are adequate AND more detailed analysis on the ‘weak link’. There are no standard reporting format;
typically covers The unit/system, Failure mode, Consequence
of failure, Symptoms, safeguards and Corrective action.
FMEA CRITICALITY
ANALYSIS (FMEACA)
Criticality
is defined in the same way as risk – that is, a combination of the severity of an
effect and the probability or expected frequency. It is the simplest
approach that requires a form of ranking or quantification in effect /
consequence AND frequency.
Effects
are normally ranked into one of the following categories; (1) loss of mission
due to inability of equipment to perform,(2) economic loss due to lack of
output or function, (3) damage to plant or third party property, (4) injury to
operating personnel or the public, (5) death to operating personnel or the
public and/or significant damage to the environment.
Quantification
of frequency depends on the data available and may again be a simple ranking,
such as one depending on failure probability during the operating time
interval, for example; extremely unlikely, remote, Occasional, reasonably frequent AND frequent.
Alternative
ranking for effect (reverse order or severity), For Example; (1) catastrophic
- may cause death or total system loss,(2) critical- may
cause severe injury or damage,(3) major - may
cause some injury or damage AND (4) minor -
requires unscheduled maintenance.
Corrective
Action And Follow-up are (1) reduce probability that the cause of failure will
result in the failure mode,(2) reduce severity of failure by redesign or add
protection redundancy AND (3) increase probability of detection.
I really appreciate your hard work and made you point wise information on your blog.
ReplyDeleteI wish you will also visit my site and rank my work.
Please visit: Failure Mode and Effect Analysis (FMEA)
Thank you.
He thinks that patients with chronic diseases can greatly benefit if they became more active by walking. He is willing to share maps and information about the location of such paths so that a physician can prescribe a walking agenda for a patient and then point them to nearby paths that they can easily access. endocrinologist
ReplyDeleteThanks for this great post, i find it very interesting and very well thought out and put together. I look forward to reading your work in the future. IVF Specialist in Lucknow
ReplyDelete