Page 57 - APPLIED PROCESS DESIGN FOR CHEMICAL AND PETROCHEMICAL PLANTS, Volume 1, 3rd Edition

42 Applied Process Design for Chemical and Petrochemical Plants

1,000
800 /\ PROJECT,: LIGHT HYDROCARBON FINISHING I -,
600 THIS CORRESPONDS WITH PROJECT A OF FIGURE 32 - 1---
j \
400 I
200 ' <,
i..--" .......... --
0
J FMAMJJASONOJFMAMJ A S O N
150 I I I I I l I I I I I I J I
I
(I) PROJECT 2: ADDING FACILITIES AT A LIGHT HYDROCARBON PLANT
§ 100
0 -r-,
:x: eo
z I/ f',_
c(
:::e F M A M A S O N D f M A M A S O N
JI\. PROJECT 3; COMPLETE NEW SYNTHETIC ORGANIC CHEMICAL PLANT I
I
I
I
I
I
I
I
I
I
I
I
I
'
f--
500 (CLOSE WORK WITH RESEARCH DATA FROM PILOT PLANT)-
I
400 \
I \ / t-,
300 r-,
I
200 I -
v \ -
100 \
OJ F M A M A S O N D F M A M J A S O N
400
PROJECT 4: COMPLETE. NEW INORGANIC PLANT
300 (OATA FROM PILOT PLANT) I
THIS CORRESPONDS WITH PROJECT C OF FIG. 32
I\
200 }\) \v Ji\
1\1
100 -- v � \
0 - 1 \ ..11'.
J M M SN JMMJSNJMMJSN M M
1!!00
PROJECT s: COMPLETE NEW ORGANIC PLANT
� 12!!0 <, (DATA FROM PILOT PLANT]
:::> I I\.
O 1000
:r I '\ -
Z 750 - \. �r-,-.....
c( ., I /
:::E 500 ...__ ····- v ' "'
-- ..... � '\
250 --- v " "
0 - "'-..
J F M A M ASONDJFMAM A S O
150 I I I I I I I I I ; I
PROJECT 6: ADDING COMPRESSOR TO EXISTING FACILITIES
100
60
I--
I/ r-;
0
J F M A M ASON DJFMAM J A S O
Figure 1 ·35. Process engineering manpower requirements by project and by months from start. By permission, E. E. Ludwig [7].
Influences equipment will usually be reflected in efficient handling
for the project when the bulk of the general engineering
The principal factor which runs the process engineer- manpower is assigned to the detailed work. When deci-
ing man-hours over expected time for a "straight sions are made at the time of the need, all concerned can
through" project is the comparison studies of equipment produce to the most benefit of the project. If the basic
or process schemes when compared to the relatively sim- process can be designed and the flowsheet approved prior
ple and limited work after the decisions are made. to initiating the detailed mechanical, structural and elec-
Any rushed program of process engineering develop- trical engineering, the project usually runs well through-
men t will usually be inefficient in manpower for certain out the department. This situation is more likely to occur
parts of the work. Thus lead time for proper thinking and in a contractor organization than a producing company
evaluation of significant process schemes and types of engineering department.