SECTION ____________
FRP FLOATING DECANTERS
PART 1
GENERAL
1.01 SUMMARY
A. This Section includes all FRP Floating Decanters for the complete installation of the
work.
1.02 REFERENCES
A. Design, and fabricate FRP Floating Decanters and materials in accordance with
manufacturer’s recommended procedures and the following codes and
standards:
1.
ASTM A193
-
Stainless Steel Anchor Bolts
2.
ASTM D256
-
Izod Impact Strength
3.
ASTM D570
-
Water Absorption Rate
4.
ASTM D638
-
Tensile Strength
5.
ASTM D695
-
Compressive Properties of Rigid Plastic
6.
ASTM D696
-
Coefficient of Linear Expansion
7.
ASTM D790
-
Flexural Properties
8.
ASTM D792
-
Density and Specific Gravity at 230 C
9.
ASTM D2563-0
-
Visual Defects
10.
ASTM D2583
-
Indentation Hardness
11.
ASTM D2584
-
Resin, Glass & Filler Content
B. Composition of the FRP Floating Decanters laminate shall be in accordance with
the recommendations shown in the Quality Assurance Report for Reinforced
Thermoset Plastic (RTP) Corrosion Resistant Equipment prepared under the
sponsorship of the Society of the Plastics Industry, Inc. (SPI), and the Material
Technology Institute (MTI) of the Chemical Process Industry for “Hand Lay-UP
Laminates,” and shall meet the specifications for Type I, Grade 10 laminates
shown in Appendix M-1 of said report.
C. Manufacturer shall be experienced in the design and manufacture of specific FRP
Floating Decanters and accessories for a minimum period of 20 years.
D. Manufacturer must provide warranty for 25 years against corrosion.
1.03 SUBMITTALS
A. Submit the following for acceptance:
1. Approval Drawings
a. Showing all critical dimensions.
b. Showing principal parts and materials.
2. Spare parts list (when applicable).
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1.04 DELIVERY, STORAGE AND HANDLING
A. Ship all Floating Decanters and accessories with suitable packaging to protect
products from damage.
B. Protect handles, brackets and other protruding accessories from damage.
PART 2
PRODUCTS
2.01 MATERIALS
A. Floating Decanters shall be:
1. Engineered composite fiberglass reinforced plastic (FRP) construction
completely encapsulating an internal structure.
a. Molded to create a seamless corrosion barrier impervious to
moisture.
b. Wear strips to be UHMW polyethylene.
c. Seals to be extruded virgin Neoprene.
d. Hardware shall be Choose a material
2.02 FRP FLOATING DECANTERS
A. Acceptable Manufacturers:
1. Plasti-Fab Inc
a. Shall be model number FD______ 4” / 6” (102mm / 152mm) diameter
orifice.
2. Or approved equal. Pre-approved by Engineer at least 10 business days prior
to bid date.
a. Manufacturer must have a qualified Engineer on staff with at least 5
years experience with FRP Floating Decanters.
2.03 DESIGN CRITERIA
A. Composition of the Floating Decanter laminate shall be in accordance with the
recommendations shown in the Quality Assurance Report for Reinforced
Thermostat Plastic (RTP) Corrosion Resistant Equipment prepared under the
sponsorship the Society of the Plastics Industry, Inc. (SPI) and the Material
Technology Institute of the Chemical Process Industries, Inc. (MTI) for “Hand
Lay-up Laminates” and shall meet the specifications for Type 1, Grade 10
laminates shown in Appendix M-1 of said report.
1. Visual inspection for defects shall be made without the aid of magnification
and defects shall be classified as to type and level as shown in Table 1 of
ANSI/ASTM D2563-0, approved 1977, (or any subsequent revision).
Allowable surface tolerances are as follows:
DEFECTS
ALLOWABLE TOLERANCE
Cracks
Crazing
Blisters
Chips
Pits
Dry Spots
Fish Eyes
Burned Areas
Entrapped Air
Wrinkles and solid blisters, not to
exceed 1/8”
None
Maximum Deviation: 10% of
thickness
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ADDRESS - P.O. Box 100 9665 SW Tualatin-Sherwood Rd. Tualatin, Oregon 97062
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Surface porosity (pinholes or pores
in the laminate surface)
Exposed Glass
Exposure of cut edges
Scratches
Foreign Matter
None
None
None more than .002” deep
(.05mm)
None
B. Floating Decanter Size
1. Floating Decanter shall be capable of a maximum flow of _______ GPM /
LPM.
a. 4” (102mm) diameter submerged orifice flow range from 60 to 244 GPM
(16 to 64 LPM).
b. 6” (152mm) diameter submerged orifice flow range from 144 to 524
GPM (38 to 138 LPM).
C. Structural
1. Maximum vertical deflection under full buoyant or gravity load shall be equal
to or less than l /360, where l is defined as the unsupported product
length in inches or equivalent.
2. The product shall be designed to accommodate thermally induced
expansion and contraction over a temperature range of - 10øF to 100øF
(-23øC to 38øC), without exceeding the deflection or strain limitations.
3. Adjustment of the submerged orifice shall be made using easily accessible
threaded stainless steel adjusting rod with locking nut. The adjustment
rod shall be supported by the FRP guide frame, which the submerged
orifice/anti-vortex baffle to be easily adjusted. The orifice overflow
elevation shall be infinitely adjustable over the projected range of flow.
D. Surface Conditions
1. All Floating Decanters shall be flat and level across the span.
2. Warpage throughout the entire Floating Decanter shall not produce a crown
of more than 1/16” (1.6mm) in any direction.
2.04 CONSTRUCTION
A. Floating Decanters Body
1. The Floating Decanter body shall be molded in one piece of reinforced
thermoset plastic construction for superior structural stability.
2. The resin and gelcoat shall be UV inhibited
3. The exterior surfaces shall be finished with a premium grade gelcoat for
superior protection against weathering and discoloration.
4. The surface shall be resin rich to a depth of .010 inches to .020 inches (.25 .51mm) and reinforced with C-glass and/or polymeric fiber surfacing
material.
5. The surface shall be free of exposed reinforcing fibers.
6. The composition of these layers shall be approximately 95% (by weight)
resin. The remaining laminate shall be made up of copolymer composite
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and reinforcing fibers in a form, orientation and position to meet the
mechanical requirements.
7. When necessary to cut the laminate structures, drill holes, machine slots,
and so forth, all cut edges shall be sanded smooth and sealed with resin
solution, paraffinated to prevent air inhibition to ensure the complete
sealing of edges to prevent water from penetrating or wicking into the
laminate.
8. The exterior surface finish shall be smooth to allow easy access for cleaning
and maintenance. Exposed metal exterior ribs will not be acceptable.
9. Decanter shall have a built in baffle to eliminate surface solids.
10. Decanter shall have no electrical or pneumatic components and no
mechanical components in contact with fluid.
11. ________ feet / meters of 4” / 6” (102mm / 152mm) flexible corrugated hose
with stainless steel clamps shall be supplied for each floating
weir/decanter.
12. Metal reinforcing members, where required, shall be free of rust, oil, and any
foreign matter. They shall be completely encapsulated with a minimum
of 1/8-in. (3-mm) thick laminate to ensure against pinhole bleeding and
subsequent rust streaking. Additional protection of the metal
reinforcement (galvanizing or the application of rust inhibitive primer)
does not preclude the need to completely encapsulate the reinforcing
member.
13. Anchoring
a. A. Two mooring stabilizers consisting of a stainless steel pipe and a
stainless steel flange to be mounted to basin wall or floor.
b. Horizontal movement shall be restricted by tethering cables.
14. Hardware shall be Choose a material
2.05 PHYSICAL PROPERTIES
A. Structural characteristics for a 1/8” (3mm) glass mat laminate shall meet the
following minimum physical properties:
Tensile strength
Flexural Modulus
Flexural Strength
Compressive Strength
Impact Strength
Water absorption
15,000 psi (1034 ksc)
1,000,000 psi (70307 ksc)
20,000 psi (1406 ksc)
22,000 psi (1547 ksc)
9.0 ft-lbs/in. (1.24 kgf.m/25mm)
0.13% (in 24 hours)
B. Extruded Virgin Neoprene Seals shall have the following physical characteristics:
Specific Gravity
Hardness
Tensile Strength
Elongation
Low temperature brittleness
PART 3
1.25
55 – 65 Shore A Durometer
1500 psi min. (0.07ksc)
300%
- 40
EXECUTION
3.01 INSTALLATION
A. Thoroughly remove all shipping materials prior to setting in place.
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ADDRESS - P.O. Box 100 9665 SW Tualatin-Sherwood Rd. Tualatin, Oregon 97062
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B. A. Installation may be accomplished by bolting through the bolting flange to an
existing structure wall or other suitable flat surface as required.
C. Discharge flow shall be set and verified by hydraulic drop test of each basin.
D. Follow manufacturer’s installation instruction.
END OF SECTION
PHONE - 503.692.5460 | FAX - 503.210.0602 | E-MAIL - sales@plasti-fab.com | WEB - www.plasti-fab.com
ADDRESS - P.O. Box 100 9665 SW Tualatin-Sherwood Rd. Tualatin, Oregon 97062
5