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Consultancy. Project Delivery. Innovation. Case Study: Design of Pulp Slurry Lines In-depth structural/mechanical design reduces capital cost Client: Multinational Paper Manufacturer

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Page 1: Case Study: Design of Pulp Slurry Lines - Flex Processflexprocess.co.uk/.../2014/07/Flex-Process-Case-Study_Pulp-lines.pdf · Case Study: Design of Pulp Slurry Lines In-depth structural/mechanical

Consultancy.

Project Delivery.

Innovation.

Case Study: Design of Pulp Slurry Lines

In-depth structural/mechanical design reduces capital cost

Client: Multinational Paper Manufacturer

Page 2: Case Study: Design of Pulp Slurry Lines - Flex Processflexprocess.co.uk/.../2014/07/Flex-Process-Case-Study_Pulp-lines.pdf · Case Study: Design of Pulp Slurry Lines In-depth structural/mechanical

Project Background

Tight deadline to commission a second pulp slurry feed tank due to

changes in production

Client proposed to use a redundant adjacent tank of similar size

Client had first-pass design taking a longer piping route at low level but

was unsure of loadings on roof structures and tank agitator nozzle

Important that design took into account all pipe work stress and

structural loads

Valves were free issue from another part of site, redundant plant

Client had no in-house design capability, so must engage a competent

designer

Page 2

Page 3: Case Study: Design of Pulp Slurry Lines - Flex Processflexprocess.co.uk/.../2014/07/Flex-Process-Case-Study_Pulp-lines.pdf · Case Study: Design of Pulp Slurry Lines In-depth structural/mechanical

Proposed Layout

Page 3

New Tank Existing Tank

New Line

Page 4: Case Study: Design of Pulp Slurry Lines - Flex Processflexprocess.co.uk/.../2014/07/Flex-Process-Case-Study_Pulp-lines.pdf · Case Study: Design of Pulp Slurry Lines In-depth structural/mechanical

Engineering Scope

Detailed site survey

Draft proposals discussed with client to ensure acceptable

Proceed with general arrangement design

Complete pipe stress calculations in Caesar II

Complete structural calculations in STAAD Pro

Mechanical Designer, Stress Engineer and Structural Engineer work

closely to ensure design satisfies each others’ requirements, involving

some design iteration

Complete isometrics and pipe support drawings

Issue structural and stress calculations

Final design review with client

Page 4

Page 5: Case Study: Design of Pulp Slurry Lines - Flex Processflexprocess.co.uk/.../2014/07/Flex-Process-Case-Study_Pulp-lines.pdf · Case Study: Design of Pulp Slurry Lines In-depth structural/mechanical

Mechanical Design

Page 5

Detailed Site Survey

General Arrangement

Drawings

Pipe Isometrics

Page 6: Case Study: Design of Pulp Slurry Lines - Flex Processflexprocess.co.uk/.../2014/07/Flex-Process-Case-Study_Pulp-lines.pdf · Case Study: Design of Pulp Slurry Lines In-depth structural/mechanical

Pipe Stress Engineering

Page 6

CAESAR II

Calculations

Specification of Custom

Pipe Supports

Page 7: Case Study: Design of Pulp Slurry Lines - Flex Processflexprocess.co.uk/.../2014/07/Flex-Process-Case-Study_Pulp-lines.pdf · Case Study: Design of Pulp Slurry Lines In-depth structural/mechanical

Structural Calculations

Page 7

Detailed Structural

Calculations

Specification of Pipe Supports taking

into account tank roof structures

Page 8: Case Study: Design of Pulp Slurry Lines - Flex Processflexprocess.co.uk/.../2014/07/Flex-Process-Case-Study_Pulp-lines.pdf · Case Study: Design of Pulp Slurry Lines In-depth structural/mechanical

Summary

Proposed new, shorter, less complex pipe routing

Saved significant capital cost but required more mechanical/structural

calculations particularly for tank roof supports

Completed full site survey, considering every detail and left nothing to

chance

Fully checked out design with stress/structural calculations using the

latest software tools

Produced fully detailed deliverables for construction or purchase,

internally checked and approved

Minimal supervision requirement from client

Completed for lump sum, within budget and timescale

Page 8

Page 9: Case Study: Design of Pulp Slurry Lines - Flex Processflexprocess.co.uk/.../2014/07/Flex-Process-Case-Study_Pulp-lines.pdf · Case Study: Design of Pulp Slurry Lines In-depth structural/mechanical

Summary

Page 9

Consultancy.

Project Delivery.

Innovation.

Please get in touch to find out how we can help your

business today.

E: [email protected] W: flexprocess.co.uk

T: +44 1454 629 689