Energy Task Force
Pre-insulated Piping Systems
TLC Engineering for
Architecture
July 23, 2012
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Agenda
Energy Task Force and the PIP Industry
 Why should the Engineer Specify PIP
 Applications for Pre-insulated Pipe
 Pre-insulated Pipe Specifications
 Engineering Considerations
 Cost Impact of Various PIP Systems
Q&A
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Energy Task Force and the PIP Industry
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ETF 29 Years of Experience
– Current 2 Manufacturing Locations
– Orlando, FL and Phoenix, AZ
PIP Young Industry
– Need for alternative to Field Insulated Pipe
– Rovanco / Ricwil (now Perma Pipe) 1st Players
– Active in Florida / SE US
 Energy Task Force
 Rovanco
 Permapipe
 Thermacore Process
Engineers Welcome at our Plant!
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What is Pre-insulated Pipe ?
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ANY pipe that carries a Fluid can be insulated
under Factory conditions at Energy Task Force
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Carbon steel
Copper
Gasket joint PVC
Glue joint PVC
Ductile iron
Stainless steel
High density polyethylene(HDPE)
Fiberglass reinforced polyester(FRP)
½” to 30”
ETF insulates the pipe with polyurethane foam
and protects the insulation with various outer
casings(PVC, HDPE, Steel, Aluminum)
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Why Should You Specify Pre-insulated Pipe
Pipe Insulated under Factory Consistent
Conditions
 Field Insulated Pipe is subject to Jobsite
Conditions
 PIP Saves $$$ in Underground
Applications
 PIP Saves Time in Aboveground
Applications
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– Cost is slightly higher for PIP
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Specify Pre-insulated Pipe
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Pre-insulated Pipe Applications
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80% of all Pre-insulated Pipe Projects
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Types of applications
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Schools
Universities
Hospitals
Prisons
Chilled Water
Hot Water
Steam and Condensate
Domestic Water
Cryogenic
Below ground and Above ground Applications
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Pre-insulated Pipe Specifications
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Carrier Pipe
– Steel is Recommended for Underground Installations
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Less Sensitivity to Installing Contractor
Less liability for Engineer and ETF
Cost add to other systems is minimal to a wash
Have to consider expansion compensation for HW and steam
systems
– Copper for 2” and smaller Pipe
– Push Joint PVC
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Very Installation Sensitive
Settling over time can result in joint leakage
Short term (ETF) and Long Term (Engineer) Liability versus
Steel
Must transition to Steel under Slab
– Glue Joint PVC not recommended
– Ductile Iron excellent alternative for Large Bore Pipe
– HDPE pipe excellent alternative for Chilled Water
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Pre-insulated Pipe Specifications
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Insulation – Polyurethane Foam is Industry Standard
– 1” of Polyfoam = 3” of foam glass
Jacket Selection
– PVC is industry standard jacket up to 12” Pipe
– HDPE is industry standard for 14” and larger Pipe
– Aluminum excellent choice for Above Ground Appl.
– Galvanized steel another alt for Above Ground
Joining Methods
– Steel – Butt weld Below Ground
– Steel – BW or Victaulic Above Ground
– Ductile Iron – Mechanical Joint
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Much Faster Install versus Steel in Large Bore Pipe
– Push Joint PVC – Bell & Spigot
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Pre-insulated Pipe Specifications
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Prefab Systems versus Field Insulated Fittings
– Specify Manufacturer Pre-fabricated / Pre-insulated
Fittings only
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When nothing else in the ground
14” and Above Pipe
If you have concerns with the installing contractor
– Specify Field Insulated Fittings all other cases
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Significantly less expensive versus prefab systems
Half # of welded joints versus prefab system
More versatile in renovation projects when underground
obstacles are inevitable.
ALWAYS SPECIFY FIELD SERVICE BY THE
MANUFACTURER TO INSURE THE QUALITY OF
FIELD INSULATED FITTINGS.
– Lets Look at Some Examples
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ETF Prefab Fittings
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Specify Pre-insulated Pipe
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ETF Sticks & Kits
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Typical Specification – Field Insulated Steel
DIVISION 15
Section 15071
PREINSULATED UNDERGROUND PIPING SYSTEMS
Page 2
PART 2 – PRODUCTS
2.1
ACCEPTABLE MANUFACTURERS
A.
2.2
Preinsulated Underground Piping system:
1.
Energy Task Force
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Ric-Wil/Perma Pipe
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Rovanco
FABRICATION
A.
Preinsulated Underground Piping System:
1.
Temperature range 20˚F to 250˚F, pressure 125 PSIG:
a.
Carrier Pipe:
1) Piping, ¼” thru 2” Schedule 40 carbon steel, seamless; ASTM A106, Grade B, Type S.
2) Piping, 2-1/2” thru 10”; Schedule 40 carbon steel, seamless or
electric resistance welded; ASTM A-53, Grade B, Type S or ERW
3) Piping, 12” and larger: Standard Wt., carbon steel, electric
resistance welded; ASTM A-53, Grade B, Type ERW
4) Where possible, provide in nominal 40 ft. lengths. Allow 6” of
exposed pipe to permit field joining. Size as shown on drawings.
Energy Task Force
b.
Fittings: Schedule to match mating pipe, carbon steel, butt weld type;
ASTM A-234, Manufacturer to provide fitting insulation kits consisting
of a hard shell mitered jacket equal to the Carrier pipe jacket with field
Applied urethane insulation and suitable joint tape. The use of interior
PVC “Zeston” style covers is not acceptable.
c.
Insulation: 2 lb density polyurethane foam or 2 lb density preformed
Urethane 90-95% closed cell, 2” nominal thickness, “K” factor of .14
(Btuh sq. ft/deg.F/in) at 75˚ F.
d.
Jacket: 20 Mil filament – wound polyester resin/fiberglass applied
directly to insulation or Type 1, Grade 1 PVC piping with a minimum
wall thickness of .060 inches, with liquid foam filled and formed
between carrier pipe and outer jacket.
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Engineering Considerations
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Push Joint PVC Systems Underground
– B & S Operation Handles Exp/Contr Comp
– MUST transition to Steel under Slab
– MUST insure your Spec is followed
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Trench Preparation is critical
Hydro Testing is a Challenge
– DO NOT insulate fittings if Thrust Blocked
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Steel / Copper Systems Underground
– Expansion compensation MUST be considered for
HW and Steam Systems
– Insist on PIP Manufacturer Drawing for Hot Water
and Steam Systems
– CHW Systems – Can Usually FLOAT
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Cost Impact of Various PIP Systems
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Above Ground Systems
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Steel with Aluminum Jacket
Steel with Galvanized Steel Jacket
Steel with UV Inhibitor PVC Jacket
Specify Victaulic if Roof Install
Under Ground Systems
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Steel / Copper Prefabricated System
Steel / Copper “Sticks & Kits”
HDPE – CHW Only
Push Joint PVC – CHW Only
Solvent Weld PVC – CHW Only
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ETF Contacts
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Jay Newell – President
JR Epifano – Sales Engineer
Charlie Simpson – Plant Manager
Michelle Brooks, PE – Engineering / CAD
www.energytaskforce.com
– Specs for all ETF systems
– Project names and contacts for references
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407-523-3770 Phone
407-523-3722 Fax
Email
– jr@energytaskforce.com
– jnewell@energytaskforce.com
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Questions ???
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