understanding of what spare parts are required to be on
Spend time with the craftspeople and ask what they
recommend. More than likely they have a notebook full
of part numbers. Talk with operators and get their input.
They are around the equipment more than anyone else.
If the equipment has been installed for a long period of
time, you may need to do a walk down. If a walk down
is needed, take pictures to save yourself a lot of time.
When you have collected all the part information, compile your list and then review the list with all associates
involved to ensure nothing was missed.
How To Store And Maintain
You need a process for creating, storing and maintaining EBOMs. You want
an EBOM layout that is easy to use and
manage. Don’t jumble the list up. Make
sections or subsections that make since
to the end user. Use a numbering system
that has increments of 10. When doing
this you can easily add in any new items
without having to renumber everything.
Consider the examples above of an
assembly station with multiple positions.
In the first example, (SAP format) the
information is jumbled together and it’s
hard to distinguish which components
go where. Here you have mixture of
mechanical and electrical components
together. The second example (also from
SAP) is made up of subcategories. You
can see how easy it is to find material
items quickly and efficiently.
If you do not have a CMMS, a simple
spreadsheet or database will work. You
would want to collect the following part
information: part descriptions, manufacturer’s part number, part classification or
criticality, part cost, amount required and
preferred vendor. Then you need to control the document and make it available to
Storing the information in an easy-to-use format will make using and updating
your EBOMs much easier. You want your
EBOM to be easy to use and manage.
Include in your EBOM process how
you will maintain the information. If your
EBOMs are out of date, how did they get
that way? What opportunities were missed
to update the information? Consider the
changes to equipment and operating procedures that would change maintenance needs
and make sure that updating the EBOMs is
part of the management of change process.
With good equipment bills of materials and a standard
process to maintain them, you can achieve better maintenance planning, reduce unplanned downtime and streamline MRO inventory requirements.
Scott Hoff is an Asset Management Services Technician
with Life Cycle Engineering. He has more than 35 years of
experience in roles including maintenance mechanic, engineering technician and maintenance supervisor/planner.
You can reach Scott at shoff@LCE.com.