Cấu trúc phân rã công việc (WBS) nâng cao (FWBS+PCWBS)

What is WBS
(Work Breakdown Structure)?


To classify the resources necessary to execute
Project in order to properly control Project



To systematically define the ALL activities(scopes)
of Project.



To break down all activities with MECE(mutually

exclusive collectively exhaustive) concept
1


What is WBS
(Work Breakdown Structure)?


WBS is the technique of Project control, but not
special and not new



WBS technique is breaking the work



WBS technique is to discrimination and
understanding of all activities

2


What is WBS
(Purpose of WBS technique)?


Effective operation of Project execution/ control
Define each Activity for PJ
Define all required up stream information

3


Type of WBS in JGC
(PLANT Engineering Business)


F-WBS（Ｗｈａｔ）



(Functional WBS)
 Definition of Work (Activity)
and Cost by Function

 Universal Coding system
within JGC Group

PC-WBS（Ｗｈｅｒｅ）

(Project Control WBS)
 Geographical Plant Area
Breakdown
 An unique Coding of each
Project to achieve effective
and efficient PJ control.

4


WBS Technique

Discrimination of work

5


WBS :Discrimination of work
PCWBS vs FWBS

6


FWBS CODE in JGC





JGC’s FWBS Code is specified in JGS
JGS= JGC Standard
To use JGS, you are requested to read and
confirm the SECRECY DECLARATION.

7


- SECRECY DECLARATION –
(JGS)

You agree to the following terms and conditions
whenever access and use JGS.
1.

2.

3.

4.

You shall acknowledge that JGS contain highly confidential
information and intellectual properties.
You shall disclose JGS only to personnel who need to know them
to the works instructed and/ or approved by JGC
You shall not make any use of JGS for any other purpose than

that of execution of the works instructed and/or approved JGC
You shall not make any copies or storage JGS.

8


What is FWBS CODE in JGC
CODE Structure
1 2

3 4 5

6

7 8

Supplementary Code
(2 alphanumeric characters)

Sub-code (4 alphanumeric characters)
Prime-code (2 alphanumeric characters)

9


FWBS Sample (Level-1)
FWBS
10
20
30

40
50
60
70
80

Description
Professional Service
Material
Labor Work
Transportation
Direct Expense
Financial Burden
Cost Items for Accounting Purpose
Contingency
10


FWBS Sample (Level-2)
FWBS
11
12
13
14
15
16
17

10>

Description
Project Management & Control
Basic Engineering
Detailed Engineering
Procurement Service
Quality Control
Construction MGT & Supervision
Commissioning & Operation
11


FWBS Sample (Level-3)
13X: Detail Engineering
21X: Direct Materials
31X: Direct Labor Work
Where X=
1:Civil General
2:Concrete Structure
3:Steel Structure
4:Buildding
5:Equipment
6:Piping

7:Instrumentation
8:Electrical
9:Insulation
A: Painting
B: Fireproof & Surface Protection
C: Catalysts, Chemicals &
Utilities

12


PC-WBS Sample
Plot
Plan

Area 30
FURNACE

COMPRESSOR

Area 31

VESSEL

SHELL & TUBE HEAT EXCHANGER Area

32

PIPE RACK

Area 20

Common: 00

VESSEL

AIR FIN COOLER

PUMP
VESSEL

Area 10
TOWER

Area 11

VESSEL
SHELL&TUBE HEAT
EXCHANGER

Area 12
13


How to decide PC-WBS?
Control objectives








Type of Stake Holders

Partner, Subcontractor？

Type of Project

Brand New? Revamp?

Environment for Work
Type of Plant

Process Unit? Utility?

Scale？
Schedule

Timing of Work start or

Work together, or separately?

Control Service






Reporting Level

Client

Division

Project Team


Discipline Lead Engineer
Control Purpose

Time

Cost
Volume of Work

Data Volume

14


How to decide PC-WBS?
PC-WBS
LEVEL 1
LEVEL 2
LEVEL 3

WORK PACKAGE
W.P. NO.
SCOPE OF WORK
RESPONSIBILITY

F-WBS

Work Volume
Resource
SCHEDULE

COST
PROGRESS

PLAN
FORECAST
ACTUAL

Resource
• Time
• COST
• Man Power
• Deliverables
• Materials
• Construction Equipment

WORK PACKAGE : Minimum Unit to control the Schedule and Cost
15


Work Framing Example
(P C -W B S )
10
(F -W B S )
P IL IN G
F O U N D A T IO N
S T R U C T U R E E R E C T IO N
E Q U IP M E N T E R E C T IO N
T O W E R E R E C T IO N
F U R N A C E E R E C T IO N
C O M P R E S S O R E R E C T IO N

O T H E R E Q U IP .E R E C T IO N
P IP IN G
S H O P F A B R IC A T IO N
F IE L D IN S T A L L A T IO N
T E S T & F L U S H IN G
IN S T R U M E N T /E L E C T R IC A L
F IE L D E R E C T IO N
TEST
M E C H A N IC A L C O M P L E T IO N

11
*
*

311
312
313
315
3151
3156
3158
3159

*

3161
3162
3168
3178
3179

12
*
*

00
20
20
*
*
*

30
31
*
*

32
*
*

*
*
*

*

*

*

*
*

*
*
*

*
*
*

*
*
*

*
*
*

*
*

*
*

*
*

*
*

*
*

316

317

31Z
16


Concept of Numbering(Coding)
Cost Account No.
PC - WBS

Schedule Activity No.
PC - WBS

F - WBS

F - WBS

Suffix

WORK PACKAGE NO.
PC - WBS

F - WBS

Requisition No.
Type

PC - WBS

Engineering Doc. No.
F - WBS

Seq.No.

F - WBS

Seq.No.

Type

PC - WBS

F - WBS

Seq.No.

R
Purchase Order No.
Type

PC - WBS

BOM/BOQ Data. ID
PC - WBS

P

F - WBS

Vendor Document No.
Type

V

PC - WBS

F - WBS

Seq.No.

Seq.No.

17