The Chiemsee Knee Replacement Clinic (CKRC) is a sports clinic located at the northern edge of the German Alps. It specializes in knee replacements for skiers who come to CKRC from Germany, Austria, Switzerland, and Ital

The
Chiemsee
Knee
Replacement
Clinic
(CKRC)
is
a
sports
clinic
located
at
the
northern
edge
of
the
German
Alps.
It
specializes
in
knee
replacements
for
skiers
who
come
to
CKRC
from
Germany,
Austria,
Switzerland,
and
Italy.
The
clinic
currently
has
one
operating
room
(OR).
However,
since
the
clinic
has
dramatically
more
demand
than
capacity,
the
management
team
contemplates
investing
in
a
second
OR.
A
lean
consulting
firm,
however,
suggests
that
before
going
ahead
with
installing
new
capacity,
the
clinic
should
first
look
at
how
it
uses
its
existing
capacity.
The
data
collected
by
the
consulting
firm
reveal
that:
-­‐ The
OR
is
available
for
12
hours
a
day;
the
hospital
has
decided
to
not
perform
any
procedures
between
7pm
and
7am.
This
time
is
equally
divided
across
three
surgeons.
-­‐ The
standard
procedure
time
for
the
knee
surgery
done
at
the
clinic
is
1h.
-­‐ The
cleaning
and
housekeeping
that
needs
to
happen
after
each
procedure
takes
20
minutes.
Almost
all
of
this
time
could
be
saved
if
the
cleaning
crew
were
notified
earlier
on.
-­‐ 10
minutes
are
spent
on
patient
preparation
/
anesthesia
work
before
each
procedure.
(Note:
this
is
not
part
of
the
60-­‐minute
procedure
time).
Proposals
have
been
evaluated
to
move
these
10
minutes
to
outside
the
OR,
and
there
exists
no
medical
reason
that
would
prohibit
doing
this.
-­‐ A
surgeon
only
starts
a
case
if
all
of
the
work
associated
with
the
case
(preparation,
procedure,
and
cleaning)
can
be
completed
in
the
4h
allotted
to
each
surgeon.
Surgeons
never
start
BEFORE
their
allotted
time.
-­‐ Though
the
clinic
aims
to
operate
7
days
a
week,
holidays,
vacation,
and
construction
time
lead
to
an
average
of
one
day
a
week
that
the
OR
cannot
be
used
at
all.
CKRC1.
How
many
cases
are
going
through
the
OR
per
day
when
the
OR
is
in
use?
CKRC2.
What
is
the
OEE
of
the
operating
room?
Assume
a
12h
window
in
which
the
OR
could
be
used.

 

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