7. IDLE TIME plotted weekly. This is really three graphs.
Average Total Idle Time perday in Hours. Average Total Idle Time per
Machine per day in Minutes. Average Time per job per Day in Minutes. The
Average Total Idle Time per Day in Hours represents the Idle time for the
entire ten machines. The average Total Idle Time per Machine per Day in
Minutes is simply the previous graph divided by ten as there are ten
machines. The Average Idle Time per Job per Day in Minutes represents the
idle time waiting between the time one job is completed and another job is
assigned to the machine.
FILES. (IC/OPS ROOM)
JOB FILE. (Temporary)
All pertinent records of current jobs being run on the bombes, jobs
to be rerun at the direction of BP because of shorts found at the
completion of the original run and "jobs up" for the day are filed in a
temporary rile in the IC/OPS office. The complete file of wheel order
sheets is also kept here.
OPERATIONAL AND TECHNICAL INFORMATION (Permanent)
Information and instructions covering the operational procedure and
technical data on the functioning of the bombes is filed in a permanent
file in the IC/OPS room.
TELEPRINTER SLIPS. (Permanent)
The teleprinter slips of all communications regarding jobs
to and from Bletchley Park are filed in the permanent rile. These are kept
for one month.
JOBS UP. (Permanent)
The records of "jobs up" regardless of where they come up
are filed in the permanent rile. These are kept for one week.
JOBS NOT UP. (Permanent)
The records of jobs not up are kept as long as there is
filing space. At present this amounts to keeping all jobs of two letter
series. A letter series consists of 999 jobs. These are of course
apportioned among the out stations so that our file for any one series is
only a partial series.