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1. Overview of PDMS
Raghunathan Janarthanan| Piping Designer

2. 3D piping designing software plant design management system (PDMS), overview of PDMS, its
uses, its commands.This is one of the best software for designing the big plants with more
accuracy.There are different modules in the pdms for designing of the plants.
Overview of PDMS
These day lots of 3D piping designing software are available in the market. Every
software has own limitations and uses.The engineering designing consultancy
companies are selecting this software as per their business model, as per
requirement of the project and the client demands for particular software in
which they want the project. Right now 3D piping designs software are available
in the market are Plant design management system (PDMS), Plant Design
System (PDS), Cad Pipe, Cad works, and spid3D etc. In these software's I shall
you let you know regarding plant design management system (PDMS).

3. Plant design management system (PDMS) is used for 3D designing of the oil and gas
offshore platforms, refineries, chemical plants and nuclear power plants.The purpose
of using that software is that we can see the actual model of offshore platform,
refineries etc which is going to build actually in the site. With the use of the 3D software
companies can reduce overall costing of the project from 10% to 30% in the form of
time saving of the project, material saving of the object. Big engineering procurement
and construction companies likeTechnip, Flou, Pertofac, Sumsung heavy industry,
Worley person, Aker solutions many more company are using these 3D software like
pdms and pds.These software are used globally in their business operations. Now
every MNC company has their offices in different part of the world. So while designing
of these platforms, refineries, and chemical plants every office has to contribute their
role on that project as per their specialty. In PDMS work can we done globally. It means
if design office at London did some work on that project.The other employees of
Mumbai office can see that work in the model online and work accordingly.
PDMS software is produce by Aviva industries. PMDS is best 3D designing software.We
can design the entire plant in the PDMS.To use the PDMS software by any company
they have to buy the numbers of license as per their requirements.

4. PDMS contains 9 modules on which designing can be
done in the model
 Piping modeling
 Equipment modeling
 Structure module
 HVAC Design
 Hanger and supports or MDS
 Cabling System
 Cable trays
 Design temples
 Room design

5. Advantages of PDMS
1. To see the actual model of the plant in the software
with exact dimensions.
2.To reduce the material from 10% to 30% from the
manual calculations of the material of the project.
3.We can save time while designing the project in pdms.
Designing project in 2d likeAutoCAD taking much more
time as compared to pdms.
4. In pdms we check the piping clashes of the piping,
equipment and other inter disciplines.
5. Designing is of piping is more accurate. Because we can
see all space around the plant.

6. 6.Very less chance of rework, if the designing is done on the
pdms.This helps us to save fabrication time on the yard.
7.The accuracy is more in pdms as compared to other 2D
software
8. Pdms can generate the material take off report of each
every component in the pdms, which is not possible in 2d
software. From the material take off report we can get exact
quantities of material which are going to use in the plant for
fabrication purpose.We can order that material as the
material take off reports.
9. From pdms we can run isometric drawing of the piping for
fabrication purpose automatically. In AutoCAD isometric
drawings are taking too much time.

7. 10. Modification of any pipe, equipment or structure can
be done easy as compared to other software.
11. Pdms is user friendly with other software like Ceaser II
for stress calculations andWith AutoCAD to import the
data from pdms to these seawares.
12.We can design supports for piping in the hanger and
supports module.
Pdms is commands based software.While operating the
software we required some command to use the
software.

8. 10. Modification of any pipe, equipment or structure can
be done easy as compared to other software.
11. Pdms is user friendly with other software like Ceaser II
for stress calculations andWith AutoCAD to import the
data from pdms to these seawares.
12.We can design supports for piping in the hanger and
supports module.
Pdms is commands based software.While operating the
software we required some command to use the
software.

9. These are the few commands which are using in the
PDMS piping design module
Axes at CE= to check the axes of component like North, South,
East, West direction
Q axes at ph= to check the head of the branch of the pipe.
Q axes at pt= to check the tail of the branch of the pipe.
Q Hstu= to show the branch head tube attribute
Q Lstu= to show the branch tail tube attribute
Q Hbore= to check the arrive bore or diameter of the component
QTbore= to check the leave bore or diameter of the component
Q Spre= to check the specification of the particular component
Q pspec= to check material class of the pipe.

10. New elbow choo all= to create new elbow through command line
New tee choo all= to create new tee through command line
New gasket choo all= to create new gasket through command
line
New flange choo all= to create new flange through command line
New olet choo all= to create new olet through command line
Unclaim all= to remove claim the by user so other user can work
in that pipe, equipment, member,structure.
Getwork= to refresh the design model. After get work all the
change done any user will show in the model.
Axes at hpos=To check the branch head axes
Axes at tpos=To check the branch tail axes

11. Q ltle= to check the length of the spool between the two
component
Conn ph to fir member= to connect the branch head to first
member of the next branch by common line
Conn pt to fir member= to connect the branch tail to last
member of the next branch by common line
Q ori = to check the orientation of the component
Dist= to give the distance between two component
Clea= to give the spool length between the two component
Conn= connect to the member
Fconn= to component forcefully
Q styp= to check the component selection type
Q dtxr= to check the detail text description of the component

12. Dir tow next= to connect the next member by direction
Q ref= to check the reference
Add all the pipe within vol ce 500= all pipes to added in the area
500 around the selected component.
Incl= to include the component from one branch to other branch
Ori and p3 is up= to orientate the point 3 of the tee in up direction
Own= navigate the owner of component
Q angle= to check the angle of the component
Q atle= to check the length of the first tube of the branch
Attype ccnn= comment attachment without dimensions
Attype cccc= comment attachment with dimensions
Attype xxxx= to set the attachment for isometric break up
Ch ce= to check the data inconsistency
Dir tow next elb= to align the elbow with next elbow

13. Dir tow id@= to align the elbow by using mouse click on the
component
Q hcon= to check head connection attached with which branch
Q tcon= to check tail connection attached with which branch
Q ispec= to check the insulation of pipe
Ispec nulref= to remove the insulation of the pipe
Mtoc dotd= to appear the component in doted in the isometric
Mtoc off= to remove the material off the component.With this
command material of the component will not appear in isometric
Nex conn= connect to next component
Nex thro ce= align the next component in same direction
Q p3 = to check the p3 point of the component

14. Q pa= to check arrive point
Q pl= to check the leave point
Attype flow= to create the flow direction attachment
These are the few commands which are using in the PDMS
equipment design module.
New site= for creating the new site in pdms
New zone= for creating the new zone in pdms
New equi= for creating the new equipment in pdms
New sube= for creating the new sub equipment in pdms
New nozzle= for creating the new nozzle in the pdms
New box= for creating new box in the pdms
New cylinder= for creating new cylinder in the pdms

15. Conn idp to idp= to connect design point of two cylinder/box etc.
Mark with (nam) all nozz for ce= to mark the all nozzle of
equipment with name in pdms
Q level= to check the level of the component
Axes at p1= to check p1 point of the primitive
Axes at p2= to check p2 point of the primitive
New cylinder copy prev by n 500= to copy the previous cylinder
by north direction by 500

16. PDMS uses in the following industries
1. For designing oil and gas project for offshore
platforms and onshore refineries.
2. For designing of the Chemical plants
3. For designing of the power plants
4. For designing of the nuclear power plants.
5. For designing of big distilleries