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~ JANUARY 1980 MONTHLY
SUMMARY
TIME SCALE NETWORK REPORT l
TO ILLINOIS COMMERCE COMMISSION V
FOR ILLINOIS POWER COMPANY'S
.CLINTON UNIT NO. 1 PROJECT -- -.
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s ILLINOIS POWER COMPANY CLINTON POWER STATION UNIT NO. 1 PROJECT
SUMMARY
TARGET SCHEDULE The Project Summary Target Schedule (PSTS) is included for project activities with target dates which were effective as of December, 1979.
The data used to generate the PSTS was suunnarized i:om the computerized project CPM schedule which includes more than six thousand detail construction and startup schedule activities which are either currently in progress, or which are scheduled to be performed in the future.
The PSTS suunnarizes construction work generally by L
building and type of work; e.g., " Fuel Building Conduit Installation".
Significant construction and startup milestones, such as fuel loading and polar crane installation are also
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identified.
The target schedule for each sunanary activity is represented by a bar (solid line) extending from the calculated-summary early start to the summary early finish.
The~ summary
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e making up the summary activity.
The smanary e~arly finish is the latest scheduled early finish of the activities being l
summarized.
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2-s The PSTS also shows the summary late finish, or,
the latest allowable finish for any of the activities included in the sumary.
Note that'this late finish date is not'the
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latest allowable finish for all the work contained in the summary activity, but rather, is the latest allowable for a particular component activity.
The " float", commonly referred to as slack time, reported in the PSTS is actually the smallest float of any of the activities being summarized.
This summary float representa the allowable slack time for the most critical detail activity included in the summary.
Note that when a summary activity h
includes a critical activity; i.e.,
an activity with zero, or less, float, that summary activity is highlighted by a triple
-solid line (
).
Included is a list of abbreviations used in the'PSTS t
.and a glossary of schedule terms.
Also, a legend'of symbols.
. appears in the upper right hand corner of the PSTS.
On the PSTS all float values of 10 or less have been.
highlighted.
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o LIST OF ABBREVIATIONS
.1.. CALIB, CKO - Calibration and Check out 2.
COAT - Construction Auxilliary Transformer 3.
COND - Cable Conduit 4.
ERAT - Emergency Reserve Auxilliary Transformer 5.
FREP - Build Forms, Install Reinforcements and Embedments, Pour Concrete 6.
HVAC - Heating, Ventilation and Air Conditioning 7.
INSTL - Installation 8.
LB - Large Bore - Over 2" Diameter Pipe 9.
PGCC - Power Generation Control Console 10.
PPG - Piping L
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SB - Small Bore - 2" Diameter and Under Pipe 12.
T/G-- Turbine Generator 13.
TRAY - Cable Tray V
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GLOSSARY OF SCHEDULE TERMS 1.
Early Start - the calculated earliest start date of'a' schedule activity based on the CPM network.
The early start'of a summary activity is the earliest of the early starts of the activities being summarized.
2.
Early Finish - the calculated earliest finish date of a schedule activity based on the CPM network.
The early finish of a
.sammary activity is the latest of the early finishes of the activities being summarized.
' 3.
Late Start - the calculated latest start date of a schedule activity based on the CPM network.
The late start of a summary activity is the earliest of the late starts of the activities being summarized.
4.
Late Finish - the calculated latest finish of a schedule activity based on the CPM network.
The late finish of a summary activity is the latest late finish of the activities being summarized.
_. - - - - Durat' ion - the estimated time. period-. to;pelrform-a(s'cheduled 5.
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Theltiration-of a. --
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Summary Early Finish - Summary Early Start + 1 L
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Float - the algebraic value resulting by subtracting the early start from the* late start.
This is the time perio.d an activity can be delayed past its early scheduled dates without a~ffect46he project completion target date.
The float of a summary activity is the algebraically ~~
smallest float of the activities being summarized.
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