Grooved piping implications for workforce management

Grooved Construction Reduces Field Manhours

Total Field Manhours

Civil / Structural

Equipment

Electrical

Piping

Large Component of Total Manhours

Grooved Construction Reduces Risk & Contingency

“Variable” Costs• Risk-Intensive

• High Contingency Factors

• Exposure

"Fixed" vs. "Variable" Costs - Welded

Labour“Variable” Costs: 60%

Material“Fixed” Costs: 40%

WELDED

“Fixed” Costs• Reduced Risk

• Low Contingency Factors

• Reduced Exposure

GROOVED"Fixed" vs. "Variable" Costs - Grooved

GROOVED

Material“Fixed” Costs: 60%

Labour“Variable” Costs: 40%

Grooved Method History British War Department sought faster way to join pipe in WWI

– Rapid deployment of water and fuel to front lines

– Faster than welding or threading

VICTAULIC company name– “VICTory Joint” for use on hydrAULICs

Anatomy of a Grooved Joint

Roll Grooving Technology

Grooved Coupling Assembly

Grooved 2 to 60-inch

Mechanical Joining Methods

Pressed ½ to 2-inch

Plain or ringed end 16 to 192-inch +

Customers & Specifiers

                                                   

                            

Hoover Dam

Ontario Power Generation Healey Falls G.S.

145” Penstock Expansion Joints

Canoe Creek Run-of-RiverBritish Columbia

36” Grooved Penstock

GTAA Cogen PlantOntario, Canada

• Cooling Water

• Circulating Water

• Service Water

• City Water

• Plant Air

• Instrument Air

FACT: The average age of welders is 54.*

* According to the American Welding Society

Skilled Labour AllocationSpecialized Welders

Pipefitters

Systems/Applications: (P91)

Steam NG Hydrogen

Systems/Applications: Cooling Water Compressed Air Water Treatment Fire Water Domestic Water Process Water (Penstocks)

Crew Mix: Specialized Welder Pipefitter (journeyman)

Crew Mix: Journeyman Fitter Apprentice

Schedule Impact with Grooved Construction

Case StudyPortlands Energy Centre

Toronto, Ontario, Canada

Portlands Energy CentreToronto, Ontario, Canada

• Challenged with schedule restraints

• Allocated available welders for P91 systems, pipefitters for grooved systems

• Press system allowed for two-person crew team, rather than three-person team

• Plant was delivered ahead of schedule

John MacFarlandPower Market Managerjmacfarland@victaulic.com416-580-3007

Resources:www.victaulic.com www.compressedschedule.com

Grooved piping implications for workforce management