APPLICATION OF QUALITY CONTROL PROCEDURES FOR CONVEYOR BELT INSTALLATIONS
Katlego Makgata
PROJECT SETUP
Problem definition, Design
Criteria, Specifications &
Documentation standards
PROCUREMENT,
FABRICATION AND SUPPLY
Purchasing of required
components and Expediting
DESIGN AND ENGINEERING
Layout and detail design
SITE CONSTRUCTION AND
INSTALLATION
Methodologies and
documentation trail
PROJECT SETUP
Design
Criteria
Technical
Specifications
Project
Procedures
Acceptance
Criteria
Drawing
Office
standards
I
G
I
I, A
G
I
G
R
R
G
I
I
I, A
I
R
R
Client
Contractor / Supplier
Team
Site
(Supervisors/Managers
)
Drawing Office
R
Conveyor Designer
I
Generates
Approval
Input into
Generation
Recipient
Project Engineer
G
A
Project Manager
Legend
Figure 1. Overall process flow
I, A
R
R
A
R
R
A
A, I
G
Table 1. Responsibility matrix, Project setup
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Preliminary Layout
Final Design to Updated
layout (if necessary)
Design
Update layout to Design
Issue for
Fabrication/Construction
Detail design
ENGINEERING AND DESIGN
Conveyor
Design
Conveyor
Equipment
Schedules
Layout
Drawings
General
Arrangement
Drawings
Structural
Design
Fabrication
and
Construction
Drawings
Checking and
Approvals
Prior to Issue
to
Contractor(s)
Shop
Detailing and
Checking of
Generated
Drawings
G
R,
A
Client
Contractor / Supplier
Site Team
(Supervisors/Managers)
Drawing Office
Structural Engineer
R
Conveyor Designer
I
Generates
Approval
Input into
Generation
Recipient
Project Engineer
G
A
Project Manager
Legend
Figure 2. Design and engineering process flow
R
R, A
G
R
I, R
I,
R
G
I, R, A
I,
R
R
G
R
G
R
I, R
A
G
A
A
A
Approval
Only on
Engineer’s
request
A
R,
A
R
R
R
I
I, A,
R
R
R
R
R
G
Table 2. Responsibility matrix, Engineering and design phase
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PROCUREMENT, FABRICATION AND
SUPPLY
Tender
compilation
and issue
Adjudication &
Contract
Placement
Certified
Drawings
Quality Control
Plans
NonConformances
Concessions
Data Books
Client
Contractor / Supplier
Site Team
(Supervisors/Managers
)
Drawing Office
Structural Engineer
Conveyor Designer
R
Project Engineer
I
Generates
Approval
Input into
Generation
Recipient
Project Manager
Legend
G
A
I, A
G
R
I, A
I, A
G
R
I, A
G
R
I, A
R
I, R
R
I, A
G
R
G
G
R
R
A
R
G
G
R
I
I
R
Table 3. Responsibility matrix, procurement, fabrication and supply phase
Figure 3. Gantry being pre-assembled
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Figure 4. Rectification of a defective gantry
Figure 5. Theodolite in position
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• SKF allows 25 mm over bearing
centres of 2 900 mm
• CEMA specification allows 1/32 inches
over bearing centres, i.e. 0.8 mm
• Anglo American specification allows 1
in 1 000, i.e. 2.9 mm
Table 4. Pulley alignment tolerances for bearing centres of 2 900 mm
Figure 6. Flatness of pulley structure plates measured using feeler gauges
Figure 7. Drive installation in progress
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Figure 8. Splicing - hot vulcanisation in progress
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Construction QC Dossier - Index
Discipline: Mechanical
Package Number:
Form Reference
No.
No
Index
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
18.1
18.2
18.3
Handover Documents
QCP
Access Certificates
Civil Survey Reports
Mechanical Installation QC Check Sheets
Welding Documentation and Certificates
NDT Reports
Test Certificates
Coating Repairs and DFT Reports
Site Engineering Queries
Site Instructions
Non-conformance Reports
Concession Requests
As-built Drawings and Weld Maps
Phase 1 Punch List
Phase 2 Punch List
Phase 3 Punch List
Construction Completion Certificates
Platework
Structural
Mechanical
Required
(a)
Table 5. Typical data pack index
Quality
Project
Cost
Time
Figure 9. The Project Management Triangle
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