X hits on this document

88 views

0 shares

0 downloads

0 comments

10 / 26

Manual for Life Cost Based FMEA

Installation

installation

Test run

e

f

Development & Design

Manufacturing

Operation

operation field failure

g

h

design flaw

a

prototype fabrication / testing assembly flaw

manufacturing inspection

b

c

d

  • -

    failure (cause) introduced

  • -

    failure (effect) discovered

  • -

    detection

a

h

Detection Time

h

a

redesign

b

cd remanufacture

e

reinstall

f

Fixing Time

a

b

g

Delay Time

g

h

c

d

e

Lost Time

d

Figure 2. Initial Origin and Detection Stages of Failure

  • Detection Time: Time to realize and identify a certain type of failure that has

occurred and diagnose the exact location and its root cause.

Fixing Time: Time to fix each individual component.

Redesign,

remanufacturing, and reinstallation are some examples of activities that lead to fixing time.

  • Delay Time: Time incurred for a non-value activity such as waiting for

technicians to respond, set up time, and mailing/shipping time.

Loss Time: Time during which the system has been shut down and has not

produced any value.

Only applies to failures that happen during

operations stage. Delay time. Loss

Loss time is the sum of Detection time, Fixing time, time is used to calculate the opportunity cost of failure.

the and

Table 5 shows a Life Cost-Based FMEA table that is filled-in for this methodology. The “Outputs” in this table are the 3 main components of Failure cost: labor cost, parts cost, and opportunity cost. Labor and opportunity costs are dependent on time and parts cost is dependent on material cost. Units for time penalties are in hours.

FMEA MANUAL By S. Rhee and C.M. Spencer

10/26

January 2009

Document info
Document views88
Page views89
Page last viewedFri Dec 09 00:02:28 UTC 2016
Pages26
Paragraphs948
Words9183

Comments