Pacific Tank Ltd.

Fiberglass Storage Tanks

CUSTOM MANUFACTURED FIBERGLASS TANKS AND STRUCTURES

SINCE 1975 Free Price Quotations: 17177 MUSKRAT AVE. Tel: (760) 246-6136 ADELANTO, CA 92301 Fax: (760) 246-6062 www.pacifictank.com

Pacific Tank Ltd In the storage tank industry, design requirements vary enormously across the range of possible applications. At Pacific Tank Ltd., each fiberglass tank is designed and engineered to meet the customer’s specific needs. Consideration is given not only to the intended contents—which may vary from highly purified water to corrosive chemicals—but also to the op-erational processes, such as mixing or temperature control. These factors plus available space, liquid specific gravity, seismic and wind loading, all contribute to the overall design of the tank to insure a high quality product perfectly suited to its application capable of giving years, often decades, of dependable service. Advantages of Fiberglass Reinforced Plastic The use of the composite material fiberglass reinforced plastic (FRP) in the manufacture of tanks has many advantages over other materials. FRP is resistant to a wide range of chemical environments—including both acids and alkalis. An FRP tank is generally maintenance free. There is no need for periodic recoating to protect from corrosion. FRP tanks offer extreme versatility in geometric shape and accessory equipment configuration. Because they are of engineered compos-ite construction, they offer unrivalled strength and durability combined with light weight. A service life lasting several decades is not unusual. Finally, nearly all modifications and repairs can be made on site, greatly reducing cost and down time. Design Standards and Fabrication Techniques The design and fabrication methods of Pacific Tank comply with product standard NBS PS 15-69 for “Custom Contact Molded Rein-forced Polyester Chemical Resistant Process Equipment”, issued by the U.S. Department of Commerce, or product standard ASTM D 3299 for “Filament Wound Glass Fiber Reinforced Thermoset Resin Chemical Resistant Tanks”, by the American Society for Testing and Materials. Which of these standards applies depends on the fabrica-tion technique. Three basic fabrication techniques are used in manufacturing fiberglass tanks: hand lay-up, filament winding, and chopper gun. Often all three techniques are used at different points in building one tank. The actual combination depends on the size, configuration, and function of the tank. Materials Two basic varieties of resin are used by Pacific Tank in the manufacture of FRP tanks—Isophthalic Polyester and Vinyl Ester. Isophthalic resin possesses good corrosion resistance and high structural strength at a low price. Premium vinyl ester resin has both high corrosion resistance and high physical strength. In all FRP tanks the first 10 to 100 mil (0.010 to 0.100 in.) of the chemically exposed interior liner contains vinyl ester. The remaining thickness, including the structural layer, may contain Isophthalic resin or the more corrosion resistant vinyl ester resin, depending on the chemical environ-ment the tank will be exposed to. Varied cure systems and promoters are used, including MEKP and BPO/DMA, as re-quired by the chemical service. Pacific Tank can provide technical data on the chemical resistance of a wide range of available resins from such manufacturers as Ashland, Reichhold, Alpha OC et al. Glass-resin composite laminates have varied physical properties depending on their individual structures. For example, because chop and mat are composed of randomly placed fibers, they both have good strength characteristics in all direc-tions and have a low tendency to delamination. Surfacing mat, or veil, has high resin absorption properties which results in a high resin content in the tank’s inner liner. This results in high chemical resistance. These physical properties, along with those of others, such as woven roving (high multidirectional tensile strength) and filament winding (extreme unidi-rectional tensile strength—like hoops on a barrel, used in large vertical cylindrical tanks) are used by combining various plies to create a tank structure that maximizes efficiency by placing the right type of strength where it is needed. Each tank manufactured by Pacific Tank has been designed to maximize the desired physical characteristics of available glass laminates and resins while minimizing costs. The same expertise is applied to tanks from 18 inches in diameter to 14 feet, and sometimes larger, with capacities from 50 to 50,000 gallons. For free technical assistance and price quota-tions, contact us by telephone, Fax or Email any time.

*Tanks are available at each 6” increment of diameter. Heights are continuously variable with no increments The above capacities are for cylinder section only, not including dome top or endcaps

Standard Tank Configurations These are generalized schematics of the most common types. Others are available

Tank Sizing Formulas: Volume of Cylinder = 5.88D2L (D= Cylinder diameter, L= Cylinder length) Volume of 45° Cone = 0.98D3 Gallons (D= Large end diameter of cone) Volume of Hemisphere = 1.96D3 gallons (D= Hemisphere diameter) One gallon of water = 8.34 Lbs One cubic foot of water = 62.4 Lbs One cubic foot = 7.48 gallons

Unlimited Tank Variety Pacific Tank is equipped to fabricate a wide variety of cylindrical tanks (vertical, horizontal, or underground) from 18” diameter to 14’ or more in 6” increments. Cylinder length can be anything customers require. Rectangular tanks are also made and have no dimension restrictions in height, width or depth. Tank internal and external structures and/ or accesso-ries are also available in unlimited configurations. The only upper end limitations to size are shipping considerations. Shown here is only a small sample of the variety of tanks we have manufactured over the last 35 years. Pigmented coat-ings with UV protectant are polyester gel coat. White is standard, as shown here, but any color required can be matched from a sample.

Double Walled, Insulated, and Electrically Heated Tank

Degasifier Vessel

60 GPM Clarifier Vessel

Typical Vertical Cylindrical Tank Most Common Type

The Manufacturing Process The Pacific Tank manufacturing facility in Adelanto, CA has an assortment of mandrels from 6” diameter to 14’ used for manufacturing cylindrical tanks and assembly panel sections for molding rectangular tanks. Pacific Tank can manufac-ture from raw materials most components and accessories used in fiberglass tanks. Our custom built fiberglass fabrica-tion facility is 10,000 square feet and wholly company owned with five acres of outside assembly and storage space. Specifications always followed in tank manufacture are ASTM D 3299, NBS PS 15-69 (covering ASTM C 582, ASTM D 4097, and ASTM D 5421), and UL 1316 (for underground tanks). Quality control conforms to ASTM D 2583 and ASTM D 2563. If required, independent laboratory inspection and analysis of tank structural samples can be performed as an op-tion during the manufacturing cycle.

Side Supported Tank with External Weir

Filament Wound Shell on Mandrel

Filament Winding Process On Rotating Tank Rig

Fitting and Nozzle Installation Rig

All Fittings, Brackets Attachments, and Nozzles Are Hand Laid Up and Installed

Tank Top Safety Railing Steel & FRP