Section 13212 FIBERGLASS REINFORCED PLASTIC TANKS

Section 13212

FIBERGLASS REINFORCED PLASTIC TANKS

PART 1 - GENERAL

1.1 THE REQUIREMENT

A. The CONTRACTOR shall furnish and install FRP Tanks, complete and operable, as shown and specified herein including appurtenances and accessories, in accordance with the requirements of the Contract Documents. Tanks referenced under this section include:

1. Two mannich polymer storage tanks.

2. Two emulsion polymer storage tanks.

3. Six polymer mixing/aging tanks.

4. One sodium hydroxide bulk storage tank.

5. One Sodium hypochlorite bulk storage tanks.

1.2 RELATED WORK SPECIFIED ELSEWHERE

A. The requirements of the following sections and divisions apply to the Work of this section. Other sections and divisions of the Specifications, not referenced below, shall also apply to the extent required for proper performance of this Work.

1. Division 01, Additional General Requirements

2. Section 06610, Glass Fiber and Resin Fabrications

3. Section 11373, Mixers

1.3 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS

A. All Work specified herein shall conform to or exceed the applicable requirements of the referenced portions of the following publications to the extent that the provisions thereof are not in conflict with other provisions of these Specifications.

B. Comply with the applicable editions of the following codes, regulations and standards.

1. Codes and Regulations

CCR California Code of Regulations, Title 24, Part 2, California Building Code (CBC)

2. Industry Standards:

ASME B16.5 Pipe Flanges and Flanged Fittings, NPS 1/2

Through 24 Metric/Inch Standard

ASME RTP-1 Reinforced Thermoset Plastic Corrosion- Resistant Equipment

ASTM C581 Standard Practice for Determining Chemical Resistance of Thermoset Resins in Glass Fiber Reinforced Structures Intended for Liquid Storage

ASTM D2583 Standard Test Method for Indentation Hardness of Rigid Plastics by Means of a Barcol Impressor

ASTM D2584 Standard Test Method For Ignition Loss of

Cured Reinforced Resins

ASTM D2996 Standard Specification for Filament-Wound "Fiberglass" (Glass-Fiber-Reinforced Thermosetting-Resin) Pipe

ASTM D2563 Classifying Visual Defects in Glass Reinforced

Plastic Laminate Parts"

ASTM D3299 Standard Specification for Filament-Wound Glass-Fiber-Reinforced Thermoset Resin Corrosion-Resistant Tanks.

ASTM D4097 Standard Specification for Contact-Molded Glass-Fiber-Reinforced Thermalset Resin Corrosion-Resistant Tanks

3. Other Standards:

AWWA American Water Works Association.

OSHA Occupational Safety and Health Act Standards for Safety

NFPA National Fire Protection Association

C. Comply with the applicable reference Specifications as directed in the General

Requirements and Supplemental General Requirements.

1.4 CONTRACTOR SUBMITTALS

A. Submittals shall be made in accordance with the General Requirements, Supplemental General Requirements, and as specified herein.

B. Drawings and Data:

1. Complete information on basic materials including chemical resistance charts.

2. Sizes and locations of all tank components and fittings for each tank.

3. Details on nozzle and other openings lay-up.

4. Details on field assembly and installation.

5. Verification of chemical/resin compatibility.

6. Manufacturer's available gel coat colors.

7. Test reports.

8. Design calculations stamped by a registered Professional Engineer registered in the State of California and experienced in the design of fiberglass storage tanks. Calculations shall include, but not be limited to, the following:

a. Dead loads. b. Live loads.

c. Seismic and wind loads.

d. Anchor design and configuration details. Tie down locations and anchor bolt sizing.

9. Detailed description of composition for each FRP laminate, including materials in each layer, thickness of each layer, overall thickness, exterior gel coating, ASTM or other standard that it conforms to, and where each laminate is utilized. This shall be accompanied by a letter from the resin manufacturer stating:

a. That the laminate and reinforcing material used will provide chemical resistance for the intended application.

b. That the resin will meet the performance requirements stated and is suitable for the service conditions specified herein.

10. Certification for each vessel that design and materials are suitable for chemical stored based on installation site environmental conditions.

11. Qualifications of manufacturer's engineer and quality control manager.

12. Description of manufacturer's quality assurance program including copies of standard logs, forms, and test reports.

C. Detailed shop drawings showing weights and dimensions of equipment, all nozzles and manways, wall thickness, laminate makeup, fabrication techniques, and construction materials.

D. Fabrication schedule and location of the fabrication site.

E. Written instructions and recommended methods for unloading, storing and installing the fiberglass equipment and recommended lifting and handling procedures, including all bolt torques.

F. Copy of current ASME RTP-1 accreditation.

1.5 QUALITY ASSURANCE

A. Manufacturer's Qualifications and Experience:

1. Tank shall be designed by an engineer experienced in designing ASME RTP-1 vessels.

2. Tank shall be stamped RTP-1 by an ASME RTP-1 accredited fabricator with tank details in accordance with RTP-1.

3. A User's Basic Requirements Specification (UBRS) form shall be completed for each vessel.

4. Experienced in design and manufacture of chemically resistant fiberglass reinforced plastic (FRP) vessels in the USA.

5. Provide services of engineer, registered in the State of California and experienced in design of similar FRP vessels and equipment.

6. Engineer stamps all Calculations and Construction Drawings.

7. Engineer available at manufacturing facility to answer technical questions on a daily basis, from both in-house and out, for the duration of this Project.

8. Engineer on manufacturer's permanent staff or retained from qualified outside source.

B. Manufacturer's Quality Assurance Program:

1. Either in-house program or retained from qualified outside source.

2. Independent from manufacturing production personnel.

3. Quality control manager experienced in the FRP industry.

4. Maintain current production schedule identifying the current status, critical inspections or tests, expected completion date, and location of fabrication or storage for each vessel.

5. All steps of the vessel fabrication to be witnessed by the quality control manager or his directly supervised staff.

6. Maintain fabrication log for each vessel, including:

a. Record of each level of quality control inspections including planned critical point inspections, standard inspections, and surveillance inspections.

b. Production personnel that worked on vessel.

c. Quantity and type of materials used for vessel construction. d. Settings of production equipment used during fabrication.

e. Results of visual inspections for individual vessel components before and after final assembly.

f. Test results for each vessel as specified herein.

g. Established forms for recording all of the above items.

7. Vessel cutouts tested to verify glass content and degree of cure in accordance with ASTM D2584 and ASTM D2583.

8. Cutouts marked, stored, saved for minimum one (1) year following plant start-up, and not destroyed until either written permission is obtained or there has been no response after 30 days notification to the Owner's representative by registered letter.

9. All areas of facility where vessels manufactured or stored available for inspection by the ENGINEER during normal working hours.

10. Each vessel accompanied by a written certification by the quality control manager that the vessel was manufactured in accordance with these Specifications and accompanied by copies of the associated fabrication log and test data.

11. Any violation of this quality control program is sufficient justification for rejection of any tanks that are involved in the violation.

12. Prior to beginning vessel fabrication, the Fabricator shall have written copy of his quality control program available to OCSD upon request

1.6 WARRANTY

A. The tanks and all components specified in this section shall be warranted by the manufacturer for a minimum three (3) year period after beneficial occupancy of the Work pursuant to “Use Prior to Final Completion” of the General Conditions, against defects in workmanship and materials. No prorated warranty shall be accepted.

PART 2 - PRODUCTS

2.1 ACCEPTABLE MANUFACTURERS

A. Subject to compliance with the Contract Documents, the following manufacturers are acceptable, Or Equal:

1. Ershigs, Inc., Bellingham WA.

2. Strand Composite Engineering & Construction.

3. Diamond Fiberglass.

2.2 MATERIAL

A. Resin: The resins used shall be a corrosion resistant vinyl ester thermoset resin that has been determined by previous documented service to be acceptable for the particular service conditions.

1. The resin shall contain no pigments, colorants, or fillers. A thixotropic agent for viscosity control may be used as recommended by the resin manufacturer. No thixotropic agent is to be used in the corrosion liner or on surfaces to be in contact with the corrosive environment. Use of this additive is subject to acceptance of the ENGINEER.

2. Ultraviolet absorber shall be added to exterior resin layer.

3. Resin putty shall be made using the same resin as was used in the component laminates. Resin putty shall contain a minimum 15 percent by weight of milled glass fibers. The use of silica flour, grinding dust or other fillers is not allowed.

4. 3-5 percent Antimony Trioxide shall be added to halogenated resin in the structural laminate only, to increase the ignition resistance of the resin.

5. Acceptable commercial-grade vinyl-ester resins, including Derakane 411, Dion

9100, Vipel F010 and Hetron 922, Or Equal. The manufacturer shall confirm the recommended resin and corrosion barrier is appropriate for the specified contents. All corrosion barrier surfaces shall be fabricated from the same resin blend.

6. For the sodium hypochlorite tank:

a. Resins shall be a Brominated vinyl ester, such as Hetron 992, Vipel F010, Or

Equal without antimony for the corrosion liner.

b. Corrosion liner shall be cured with a BPO/DMA cure system. No cobalt shall be used in the corrosion liner.

c. Corrosion liner to be a double Nexus, minimum of 120 mils. d. Tank to be post cured.

e. All internal seams and secondary overlays shall have a double resin coating. The first coat with resin and allowed to fully exotherm. The second layer with the resin containing paraffin wax.

f. All flanges shall 2-inch or greater. All flanges shall be flush internally with no projections.

B. Surfacing Veil: The inner surface reinforcement shall consist of a synthetic fiber veil. The surfacing veil shall contain a coupling agent or binder that is compatible with the corrosion barrier resin. Two layers of veil with minimum thickness of 20 mil. for each layer.

C. Reinforcement:

1. All glass fiber reinforcing shall have epoxy compatible with silane-type surface finish and binder that is recommended by the glass manufacturer for the particular resin system to be used.

2. Surfacing veils on interior surfaces shall be 20-mil Nexus veil. Veil, Dacron 106 homopolymer, Or Equal. Veil shall be acceptable for the particular chemical service conditions and shall be accepted by ENGINEER.

3. Surfacing veil used on the tank exterior surfaces shall be 10-mil Type C-glass veil.

4. Mat shall be type E glass, 1-1/2 ounces per square foot as specified in the laminate sequence charts with nominal fiber length of 1.25 plus or minus 0.25 inch.

5. Continuous roving used in chopper gun for spray up shall be Type E glass.

6. Continuous roving used for filament winding shall be Type E glass with a silane- type finish with a nominal yield of 110 yards or more per pound.

2.3 FABRICATION

A. The tank shall be shipped as a single integral unit, except for ladders, railings, and other large appurtenances, which may be shipped separately.

B. Tanks shall be certified compliance and stamped to ASME RTP-1.

1. Filament-wound side walls and contact molded top and base construction.

2. Minimum design safety factors and wall thickness per governing standard but not less than the following:

a. Internal Pressure: 10:1. b. External Pressure: 5:1. c. Seismic Loads: 3:1.

3. Sufficient resin on all surfaces to prevent fiber show.

4. Fabricate ends integrally with shell, or separately and laminated to shell.

5. Make joints with heavy reinforced lay-ups for structural stability and to prevent leakage.

6. Inner surface layer:

a. Two layers of 20 mil. Each veil.

b. Inner layer followed by laminate 80-90 mils thick, reinforced with non- continuous chopped strand fiberglass.

c. Laminate Layer Resin Content: 70-80 percent.

d. Total thickness of two (2) layers at least 100 mils.

7. Structurally reinforce walls with helical filament winding of continuous strands, tops, and bases with fiberglass mat and/or woven roving.

a. Thickness and glass content per tensile and flexural requirements.

8. Reinforcing ribs per manufacturer's recommendations.

9. Lifting lugs provided on tank.

10. Coated with protective gel coat containing UV inhibitors, color as selected by

ENGINEER.

11. Minimum Wall Thickness: 1/4 inch, excluding corrosion liner thickness. C. Design Loads:

1. Seismic Requirements: Per California Building Code.

2. Concentrated Top Load: Compute at 150 psf plus dead load.

3. Mixer Loads: Coordinate mixer dead and live loads for tanks having a mechanical mixer per tank schedule in this section.

4. Uplift:

a. Design the anchoring system for uplift forces caused by flooding in the chemical containment area for tanks with concrete pad mounting system.

b. Assume storage tank to be empty and a liquid level existing exterior to the tank as follows:

1) Emulsion Polymer Bulk Storage Tanks: 3.0 feet above the bottom of the tank.

2) Sodium Hypochlorite Storage Tanks: 3.0 feet above the bottom of the tanks.

3) Sodium Hydroxide Storage Tanks: 3.0 feet above the bottom of the tank.

4) Resistance to uplift forces to be accomplished by stiffening with a balsa core bottom per ASTM RTP-1.

D. Minimum Laminate Fabrication Requirements:

1. Filament wound construction.

a. Tensile strength, pounds per inch 25,000 (Hoop). b. Flexural strength, pounds per inch 20,000 (Hoop).

c. Compressive edge strength, pounds per inch 20,000.

d. Flexural modulus of elasticity, pounds per inch 1.8x106 (Hoop). e. Tensile modulus of elasticity, pounds per inch 2.0x106 (Hoop).

f. Minimum glass content, percent 55-70 (not including corrosion liner).

2. Contact molded construction:

a. Tensile strength, pounds per inch 8,000.

b. Flexural strength, pounds per inch 16,000.

c. Compressive edge strength, pounds per inch 18,000.

d. Flexural modulus of elasticity, pounds per inch 0.7x106. e. Tensile modulus of elasticity, pounds per inch 0.8x106. f. Minimum glass content, percent 30-45.

2.4 WORKMANSHIP AND LAMINATE QUALITY

A. General Appearance: Tank should be uniform in color. Joints and matting ground fittings shall not be whited out from over-catalization. On pigmented tanks color of matting on joints and fittings shall be matched as close as possible to the color of the tank exterior. There shall be no burrs or sharp edges on tank. No knots in filament winding. All cut or ground edges shall be coated with paraffinated resin.

B. Inner Surface: Shall be free of cracks, crazes and blisters.

1. Pits: Craters in the laminate surface no more than 10 per square foot. Pits shall be less than 1/8 inch diameter and 1/32 inch deep, and shall be coated with paraffinated resin to avoid exposure to product and possible contamination.

2. Interior Layer: Shall be free of dry glass, burned areas and foreign matter.

3. Entrapped Air: (Bubbles or voids in laminate) no more than 10 per square inch and less than 1/16 inch in diameter.

C. Laminate Quality: Meet requirements of the visual acceptance criteria in ASME RTP-

1, Level II including, but not limited to, the following:

1. Appearance.

2. Defects.

3. Cut edges.

4. Construction joints.

2.5 HEAT CURE

A. Post Curing: When recommended by the resin manufacturer’s corrosion guide, the tank be should be heated on the interior to a temperature of 180 degrees F. to 200 degrees F. and maintained for (4) hours to more completely cure the resin.

B. Post curing shall use indirect heaters or steam to avoid hot spots. Follow resin manufacturer's recommendations for post cure temperatures and times. Any material not meeting the recommended Barcol hardness after post curing shall be rejected.

C. Heat curing is required for the sodium hypochlorite tank.

2.6 SURFACE CURE

A. Hardness Test: Per ASME RTP-1.

B. Acetone Test: Tanks requiring acetone test to check for proper cure should be tested as follows: Rub a small amount of clean Acetone on the laminate surface until the Acetone evaporates. If the surface stays dry and hard, it is properly cured. CAUTION: Remove all mold release or paraffin wax and all dust from surface.

2.7 VISUAL INSPECTION CRITERIA (PER ASME RTP-1, SECTION 9, TABLE 6-1)

Defect	Surface Inspected
	Corrosion Barrier	Structural Laminate
Cracks	None	None
Crazing (fine surface cracks)	None	Maximum dimension 1”. Maximum density 5/ft2. A
Blisters (rounded elevations of the laminate surface over bubbles)	None	Maximum 1/4” diameter x 1/8” high, maximum 2/ft2. A
Wrinkles & Solid Blisters	Maximum deviation, 20% of wall thickness, but not exceeding 1/8”.A	Maximum deviation, 20% of wall A thickness, but not exceeding 3/16”.
Pits (craters in the laminate surface)	Maximum dimensions, 1/8” dia. x 1/32” deep. Maximum number, 10/ft2. A	Maximum dimensions, 1/8” dia. x 1/16” deep. Maximum number, 10/ft2. A
Surface Porosity (pinholes or pores in the laminate)	Maximum dimensions, 1/16” diameter x 1/32” deep. Maximum number 20/ft2 by 1/16 in. Must be resin-rich. A	Maximum dimensions, 1/16” diameter x 1/16” deep. Maximum number 20/ft2 by 1/16 in. Must be resin-rich. A
Chips (small piece broken from edge or surface)	Maximum dimensions, 1/8” diameter x 1/32” deep. Maximum number 1/ft2. A	Maximum dimensions, 1/8” diameter x 1/16” deep. Maximum number 5/ft2. A

Defect	Surface Inspected
	Corrosion Barrier	Structural Laminate
Dry Spot (non-wetted reinforcing)	None	Maximum dimension, 2 in.2. A
Entrapped Air (bubbles, voids or delaminations in laminate)	Maximum diameter 1/16”, 2 10/in. maximum density. 2 Maximum diameter 1/8”, 2/in. maximum density. Maximum depth of 1/32 in. A,B	Maximum diameter 1/16”, 10/in.2 maximum density. Maximum diameter 1/8”, 2/in.2 maximum density. Maximum depth of 1/32 in. A,B
Exposed Glass	None	None
Burned Areas	None	None
Exposure of Cut Edges	None	None C
Scratches	None over 0.005 in. deep and 4 in. long	Maximum length 12”. Maximum depth 0.010” 2/ft2, maximum density. A
Foreign Matter	None	1/8” diameter, maximum density 1/ft2. 3/16” diameter, maximum density 1/ft2. A

A Maximum 5 percent of total surface area affected.

B Entrapped air or bubbles described are allowed, provided the surface cannot easily be broken with a pointed object, such as a knife blade.

2.8 TANK ACCESSORIES A. Flanged nozzles:

a. Conically gusseted to tank, withstand bending and torque per RTP-1 requirements.

b. Flange diameter and drilling per ANSI B16.5, 150 pounds. c. Same material as tank.

d. Nozzles location and sizes as shown on Drawings or specified. e. Press molded flanges not allowed.

f. PVC flanges on vents attached to vessel not allowed. g. At least 4 inches from outside face.

h. Flanges shall be manufactured by the tank fabricator.

2. Manways:

a. Top and side manways dimension as indicated on Drawings. b. Flange diameter and drilling per ANSI B16.5, 150 pounds.

c. 40-50 durometer 1/8 inch thick full-faced gaskets.

3. Gaskets:

a. The manway and blind flange nozzles shall be provided with the gaskets. b. Gasket material shall be Teflon or Teflon encapsulated Viton.

4. Exterior pipe supports on tanks:

a. Where shown or required to support piping or electrical conduits.

b. Supports:

1) Allow easy installation of the pipe or conduit, as well as easy removal for repair or replacement if necessary.

2) Spaced 5 feet on center, and within 1 foot of elbows, valves, or check valves.

5. Interior fill pipes for each tank:

a. Schedule 80 CPVC pipe extending from inlet connection to 9 inches above tank bottom.

b. Interior flanged connection to tank nozzle at top. c. Pipe size to match exterior fill pipe.

d. Pipe supports at 5 feet maximum, designed for easy pipe removal and replacement.

e. Vacuum breaking consisting of 3/4-inch diameter by 6 inches long horizontal

FRP pipe from interior tank nozzle at top of tank, and pointed toward tank center.

B. Equipment Supports:

1. Tank manufacturer shall design and submit for approval by Engineer adequate support system for equipment on top of tank.

2. Firmly anchor equipment such as mixers and bridge supports to the tank structure, yet allow removal of the supports if necessary.

C. Tie Down Lugs: Number, strength, location and anchor bolt size as required per design loading.

D. Tank Tops: The top surface of all tanks shall be provided with a full non slip surface created by a heavy sprinkling of sand into the final surface resin coating.

E. Railings: Railings shall comply with the following:

1. 42-inch high minimum railing height.

2. Fabricated in compliance with OSHA requirements.

3. FRP construction.

4. Removable, attached to tank with 316 stainless steel hardware and fasteners.

F. Ladders: Ladder shall be FRP construction bolted to FRP tank brackets. Ladders will be attached to the tank brackets with 316 stainless steel bolts, nuts, and double washers. Fabrication shall meet the requirements of Section 06610, Glass Fiber and Resin Fabrications, and the following:

1. Shall meet all regulatory and OSHA requirements.

2. Bottom rung shall be no higher than 8 inches above the containment floor.

3. Rungs shall be evenly spaced not more than 12 inches on center.

4. Top rungs shall be flush with landing surface.

5. Clear Rung W idth: 16 inches minimum.

6. Rungs shall be a minimum of 7 inches from centerline of rungs to surfaces behind the ladder.

7. Standoff clips shall be evenly spaced but not more than 8 feet on center at each side rail.

8. Top standoff clips shall be 6 inches below landing surface.

9. Side rails shall extend 42 inches above landing surface.

10. Safety cages shall be provided for all ladders as indicated on Drawings.

11. If the distance from the top of the ladder rung to the landing is more than 12 inches, a step off platform must be provided.

12. Ladder swing safety gate shall be provided at top of tank. a. Ladder swing safety gate shall be FRP construction. b. Hardware shall be 316 stainless steel.

c. Ladder swing safety gate shall comply with OSHA requirements. G. Nameplates: Per ASME RTP-1 requirements.

H. Attach a permanent weatherproof equipment identification label to each tank. The label shall state the following information:

1. Equipment identification number.

2. Capacity in U.S. gallons

3. Name of manufacturer.

4. Manufacturer serial number.

5. Year built.

6. Purchase order number.

7. Resin blend and catalyst/promoter system.

8. Surface veil.

9. Liner material.

10. Design temperature and pressure.

11. Tank dimensions.

12. Tank weight (empty).

13. Tank weight (full of water).

2.9 DESIGN REQUIREMENTS

A. Mannich Polymer Bulk Storage Tanks:

Tank ID	15LTNK700	15LTNK706	15LTNK712
Tank Designation	Mannich Polymer 1	Mannich Polymer 2	Mannich Polymer 3
Material of Construction	FRP	FRP	FRP
Tank Bottom	Flat	Flat	Flat
Tank Top	Flat	Flat	Flat
OSHA Handrail Around Top	Yes	Yes	Yes
Ladder	Yes	Yes	Yes
Ladder Cage, OSHA	yes	yes	yes
Ladder Swing Safety Gate	Yes	Yes	Yes
Material Stored	Mannich Polymer	Mannich Polymer	Mannich Polymer
Net Liquid Volume, gal	22,000	22,000	22,000
Liquid Density, lb/gal	8.85	8.85	8.85

Tank ID		15LTNK700	15LTNK706	15LTNK712
Gasket Material		Teflon	Teflon	Teflon
Outside Diameter		12'-0"	12'-0"	12'-0"
Tank Liquid Height (approximate)		~26'-6"	~26'-6"	~26'-6"
Freeboard		2'-6"	2'-6"	2'-6"
Top Manway
	Diameter	2'-6"	2'-6"	2'-6"
	Angle	0o	0o	0o
	Radius	4'-6"	4'-6"	4'-6"
Side Manway
	Diameter	3'-0"	3'-0"	3'-0"
	Angle	0o	0o	45o
	Invert	0'-6"	0'-6"	0'-6"
Fill Nozzle
	Diameter	8"	8"	8"
	Location	Top	Top	Top
	Angle	315o	270o	315o
	Radius	5'-0"	5'-0"	5'-0"
Drain Nozzle
	Diameter	6"	6"	6"
	Location	Side/Bottom	Side/Bottom	Side/Bottom
	Angle	270o	225o	270o
	Invert	0'-0"	0'-0"	0'-0"
Overflow Nozzle
	Diameter	6"	6"	6"
	Location	Side/Top	Side/Top	Side/Top
	Angle	285o	240o	285o
	Height	12" above liquid level	12" above liquid level	12" above liquid level
Outlet Nozzle
	Diameter	6"	6"	6"
	Location	Side/Bottom	Side/Bottom	Side/Bottom
	Angle	180o	135o	0o
	Invert	6"	6"	6"
Vent
	Diameter	8"	8"	8"
	Location	Top	Top	Top
	Angle	Center	Center	Center
	Radius	0	0	0

FRP TANKS Sludge Dewatering and Odor Control at Plant 1

Tank ID		15LTNK700	15LTNK706	15LTNK712
Level Sensor 1
	Diameter	6"	6"	6"
	Location	Top	Top	Top
	Angle	135o	90o	135o
	Radius	4'-0"	4'-0"	4'-0"
Level Sensor 2
	Diameter	6"	6"	6"
	Location	Top	Top	Top
	Angle	270o	180o	270o
	Radius	4'-0"	4'-0"	4'-0"
Level Sensor 3
	Diameter	6"	6"	6"
	Location	Top	Top	Top
	Angle	225o	270o	315o
	Radius	4'-0"	4'-0"	4'-0"
Ladder
	Location	Side	Side	Side
	Angle	45o	315o	180o
Seismic Restraint		Yes	Yes	Yes
	Zone	CA/4	CA/4	CA/4

B. Emulsion Polymer Bulk Storage Tanks:

Tank ID	15MTNK800	15MTNK808
Tank Designation	Emulsion Polymer 1	Emulsion Polymer 2
Material of Construction	FRP	FRP
Tank Bottom	Flat	Flat
Tank Top	Flat	Flat
OSHA Handrail Around Top	Yes	Yes
Ladder	Yes	Yes
Ladder Cage, OSHA	yes	yes
Ladder Swing Safety Gate	Yes	Yes
Material Stored	Emulsion Polymer	Emulsion Polymer
Liquid Volume, gal	6,000	6,000
Liquid Density, lb/gal	8.60	8.60
Outside Diameter	8'-0"	8'-0"
Gasket Material	Teflon	Teflon
Tank Liquid Height (approximate)	~16'-0"	~16'-0"
Freeboard	2'-6"	2'-6"

Tank ID		15MTNK800	15MTNK808
Tank Baffles		Yes	Yes
No. of Baffles		4	4
Baffle Type		Flat	Flat
Baffle Width		6.5"	6.5"
Baffle Length		18'-6"	18'-6"
Top Manway
	Diameter	2'-6"	2'-6"
	Angle	0o	0o
	Radius	2'-6"	2'-6"
Side Manway
	Diameter	3'-0"	3'-0"
	Angle	180o	180o
	Invert	0'-6"	0'-6"
Fill Nozzle
Diameter		6"	6"
Location		Top	Top
Angle		90o	90o
Radius		3'-6"	3'-6"
Drain Nozzle
	Diameter	4"	4"
	Location	Side/Bottom	Side/Bottom
	Angle	60o	60o
	Invert	0'-0"	0'-0"
Overflow Nozzle
	Diameter	6"	6"
	Location	Side/Top	Side/Top
	Angle	45o	45o
	Height	18" above liquid level	18" above liquid level
Outlet Nozzle
	Diameter	4"	4"
	Location	Side/Bottom	Side/Bottom
	Angle	300o	300o
	Invert	6"	6"
Vent
	Diameter	8"	8"
	Location	Top	Top
	Angle	180o	180o
	Radius	2'-6"	2'-6"

FRP TANKS Sludge Dewatering and Odor Control at Plant 1

Tank ID		15MTNK800	15MTNK808
Vent Desiccant/Dryer
	Required	Yes	Yes
	Location	Top	Top
	Diameter	13"	13"
	Height	30"	30"
	Weight	210 lb	210 lb
Level Sensor 1
	Diameter	6"	6"
	Location	Top	Top
	Angle	270o	270o
	Radius	2'-6"	2'-6"
Level Sensor 2
	Diameter	6"	6"
	Location	Top	Top
	Angle	225o	225o
	Radius	2'-6"	2'-6"
Mixer
Opening Size		 3-' 0"	 3-' 0"
Location		Top Center	Top Center
Centerline Angle		90o	90o
Static Weight		1,315 lb	1,315 lb
Weight Momment		866 lb-in	866 lb-in
Dynamic Torque		4528 lb-in	4528 lb-in
Bending Moment		9128 lb-in	9128 lb-in
Dynamic Shear		76 lb	76 lb
Ladder
	Location	Side	Side
	Angle	135o	135o
Seismic Restraint		Yes	Yes
Seismic Zone		CA/4	CA/4

Sludge Dewatering and Odor Control at Plant 1 FRP TANKS

C. Polymer Mixing/Aging Tanks:

Tank ID	15LTNK750	15LTNK760	15LTNK770	15MTNK850	15MTNK860	15MTNK870
Liquid Stored	Thickening Dilute Polymer 1	Thickening Dilute Polymer 2	Thickening Dilute Polymer 3	Dewatering Dilute Polymer 1	Dewatering Dilute Polymer 2	Dewatering Dilute Polymer 3
Material of Construction	FRP	FRP	FRP	FRP	FRP	FRP
Tank Bottom	Flat	Flat	Flat	Flat	Flat	Flat
Tank Top	Open with Bridge	Open with Bridge	Open with Bridge	Open with Bridge	Open with Bridge	Open with Bridge
Bridge Width	3'-0"	3'-0"	3'-0"	3'-0"	3'-0"	3'-0"
Handrail around Bridge	Yes	Yes	Yes	Yes	Yes	Yes
Ladder	Yes	Yes	Yes	Yes	Yes	Yes
Ladder Cage, OSHA	Yes	Yes	Yes	Yes	Yes	Yes
Ladder Swing Gate	Yes	Yes	Yes	Yes	Yes	Yes
Liquid Volume, gal	4,000	4,000	4,000	4,000	4,000	4,000
Liquid Density, lb/gal	8.34	8.34	8.34	8.34	8.34	8.34
Gasket Material	Teflon	Teflon	Teflon	Teflon	Teflon	Teflon
Outside Diameter	8'-0"	8'-0"	8'-0"	8'-0"	8'-0"	8'-0"
Tank Liquid Height (approximate)	~11'-0"	~11'-0"	~11'-0"	~11'-0"	~11'-0"	~11'-0"
Free board	2'	2'	2'	2'	2'	2'
Tank Baffles	Yes	Yes	Yes	Yes	Yes	Yes
No. of Baffles	4	4	4	4	4	4
Baffle Type	Flat	Flat	Flat	Flat	Flat	Flat
Baffle Width	7.5"	7.5"	7.5"	7.5"	7.5"	7.5"
Baffle Length	13'-0"	13'-0"	13'-0"	13'-0"	13'-0"	13'-0"
Side Manway
Diameter	3'-0"	3'-0"	3'-0"	3'-0"	3'-0"	3'-0"
Angle	90o	90o	45o	90o	157.5o	145o
Invert	0'-6"	0'-6"	0'-6"	0'-6"	0'-6"	0'-6"
Drain Nozzle 1
Diameter	6"	6"	6"	6"	6"	6"
Location	Side/Bottom	Side/Bottom	Side/Bottom	Side/Bottom	Side/Bottom	Side/Bottom
Angle	292.5o	22.5o	67.5o	22.5o	56.25o	51o
Invert	0'-0"	0'-0"	0'-0"	0'-0"	0'-0"	0'-0"
Drain Nozzle 2
Diameter	4”	4”	4”	4”	4”	4”
Location	Side/Bottom	Side/Bottom	Side/Bottom	Side/Bottom	Side/Bottom	Side/Bottom
Angle	315o	202.5o	202.5o	247.5o	247.5o	112.5o
Invert	0'-0"	0'-0"	0'-0"	0'-0"	0'-0"	0'-0"

Tank ID	15LTNK750	15LTNK760	15LTNK770	15MTNK850	15MTNK860	15MTNK870
Overflow Nozzle
Diameter	6"	6"	6"	6"	6"	6"
Location	Side/Top	Side/Top	Side/Top	Side/Top	Side/Top	Side/Top
Angle	345o	345o	345o	60o	60o
Height	12" above liquid level	12" above liquid level	12" above liquid level	12" above liquid level	12" above liquid level	12" above liquid level
Outlet Nozzle
Diameter	6"	6"	6"	6"	6"	6"
Location	Side/Bottom	Side/Bottom	Side/Bottom	Side/Bottom	Side/Bottom	Side/Bottom
Angle	22.5o	145o	112.5o	292.5o	292.5o	292.5o
Invert	6"	6"	6"	6"	6"	6"
Level Sensor 1
Diameter	6"	6"	6"	6"	6"	6"
Location	Top	Top	Top	Top	Top	Top
Angle	0o	0o	0o	0o	0o	0o
Radius	4'-0"	4'-0"	4'-0"	4'-0"	4'-0"	4'-0"
Level Sensor 2
Diameter	6"	6"	6"	6"	6"	6"
Location	Top	Top	Top	Top	Top	Top
Angle	180o	180o	180o	180o	180o	180o
Radius	4'-0"	4'-0"	4'-0"	4'-0"	4'-0"	4'-0"
Mixer on Bridge
Opening Size	0'-6"	0'-6"	0'-6"	0'-6"	0'-6"	0'-6"
Location	Top Center	Top Center	Top Center	Top Center	Top Center	Top Center
Static Weight	510 lb	510 lb	510 lb	510 lb	510 lb	510 lb
Weight Momment	0 lb-in	0 lb-in	0 lb-in	0 lb-in	0 lb-in	0 lb-in
Dynamic Torque	2226 lb-in	2226 lb-in	2226 lb-in	2226 lb-in	2226 lb-in	2226 lb-in
Bending Moment	3983 lb-in	3983 lb-in	3983 lb-in	3983 lb-in	3983 lb-in	3983 lb-in
Dynamic Shear	42 lb	42 lb	42 lb	42 lb	42 lb	42 lb
Ladder
Location	Side	Side	Side	Side	Side	Side
Angle	0o	0o	0o	0o	0o	0o
Seismic Restraint	Yes	Yes	Yes	Yes	Yes	Yes
Seismic Zone	CA/4	CA/4	CA/4	CA/4	CA/4	CA/4

Sludge Dewatering and Odor Control at Plant 1 FRP TANKS

D. Sodium Hydroxide (Caustic Soda) Bulk Storage Tank:

Tank ID	15KTNK220
Tank Designation	Sodium Hydroxide
Material of Construction	FRP
Tank Bottom	Flat
Tank Top	Flat
OSHA Handrail Around Top	Yes
Ladder	Yes
Ladder Cage, OSHA	Yes
Ladder Swing Safety Gate	Yes
Material Stored	Caustic Soda
Percentage	25 percent
Liquid Volume, gal	5,000
Liquid Density, lb/gal	10.81
Gasket Material	Teflon
Outside Diameter	8'-0"
Tank Liquid Height	~13'-6"
Freeboard	2'-6"
Top Manway
Diameter	2’-6”
Angle	0o
Radius	2’-6”
Side Manway
Diameter	3'-0"
Angle	45o
Invert	0'-6"
Fill Nozzle
Diameter	3"
Location	Top
Angle	90o
Radius	3'-3"
Drain Nozzle
Diameter	4"
Location	Side/Bottom
Angle	215o
Invert	0'-0"
Overflow Nozzle
Diameter	4"
Location	Side/Top
Angle	215o

Tank ID	15KTNK220
Height	12" above liquid level
Outlet Nozzle
Diameter	2"
Location	Side/Bottom
Angle	180o
Invert	6"
Outlet Nozzle (Spare)
Diameter	3"
Location	Side/Bottom
Angle	315o
Invert	6"
Fitting	Blind Flange
Vent
Diameter	6"
Location	Top
Angle	135o
Radius	3'-0"
Level Sensor 1
Diameter	6"
Location	Top
Angle	180o
Radius	3'-0"
Level Sensor 2
Diameter	6"
Location	Top
Angle	270o
Radius	3'-0"
Ladder
Location	Side
Angle	0o
Seismic Restraint	Yes
Seismic Zone	CA/4

Sludge Dewatering and Odor Control at Plant 1 FRP TANKS

E. Sodium Hypochlorite (Bleach) Bulk Storage Tanks:

Tank ID	17GTNK260
Tank Designation	Bleach Storage
Material of Construction	FRP
Tank Bottom	Flat
Tank Top	Flat
OSHA Handrail Around Top	Yes
Ladder	Yes
Ladder Cage, OSHA	yes
Ladder Swing Safety Gate	Yes
Material Stored	Sodium Hypochlorite
Concentration, percent	12.5 percent
Liquid Volume, gal	18,600
Liquid Density, lb/gal	10.00
Gasket Material	Teflon
Outside Diameter	18’-0”
Tank Liquid Height (approximate)	10’-0”
Freeboard	2’-6”
Top Manway
Diameter	2'-6"
Angle	0o
Radius	6'-6"
Side Manway
Diameter	3'-0"
Angle	180o
Invert	0'-6"
Fill Nozzle
Diameter	2"
Location	Top
Angle	90o
Radius	7'-6"
Drain Nozzle
Diameter	4"
Location	Side/Bottom
Angle	45o
Invert	0'-0"

Tank ID	17GTNK260
Overflow Nozzle
Diameter	4"
Location Angle	Side/Top 45o
Height	12" above liquid level
Outlet Nozzle 1
Diameter	4"
Location	Side/Bottom
Angle	270o
Invert	6"
Outlet Nozzle 2
Diameter	4"
Location	Side/Bottom
Angle	90o
Invert	6"
Vent
Diameter	6"
Location	Top
Angle	0o
Radius	0’-0”
Level Sensor 1
Diameter	6"
Location	Top
Angle	120o
Radius	7'-6"
Level Sensor 2
Diameter	6"
Location	Top
Angle	300o
Radius	7'-6"
Ladder
Location	Side
Angle	135o
Seismic Restraint	Yes
Seismic Zone	CA/4

Sludge Dewatering and Odor Control at Plant 1 FRP TANKS

PART 3 - EXECUTION

3.1 INSTALLATION A. General:

1. Per manufacturer's recommendations.

B. Clean with mild soap solutions, rinse with 180 degrees F water.

3.2 PREPARATION FOR SHIPMENT, SHIPMENT AND PROTECTION

A. In addition to any special requirements for shipping, handling, storage and protection provided in this Specification, fiberglass tanks shall be prepared and protected for shipment and shipped in accordance with Fabricators standard procedures for secure shipment of FRP equipment.

3.3 FABRICATOR'S CERTIFICATES

A. Provide Fabricator's certificates in accordance with Section 1.4 "Submittals". In addition, provide information from the resin manufacturer listing the nomenclature, composition and characteristics of the resin, which shall be furnished with each tank.

3.4 DELIVERY, STORAGE AND HANDLING

A. Packing and Shipping: Prepare and protect materials for shipment and ship as follows:

1. All materials fabricated to this Specification shall be packaged, crated, or protected in such a manner so as to prevent damage in handling and while in transit. Details of these procedures shall be the responsibility of the Fabricator. Tanks shall be shipped on trailers with rail type padded saddles or mounted on padded cradles if shipped horizontally or on a suitable skid if shipped vertically.

2. All flanged nozzles shall be protected and secured.

3. All unflanged components shall either contain rigid plugs inside the ends to prevent deflection or shall be protected by adequate exterior wrapping. The open ends of tanks shall be braced with suitable stiffening members to prevent deflection.

4. No components or other pieces shall be shipped loose inside of the tanks.

5. Tanks shall be loaded with at least 1 inch minimum clearance between the tank

(including fittings) and the bulkheads or bed of the vehicle.

6. Regardless of the mode of transportation, all components shipped shall be firmly fastened and padded to prevent shifting of the load or flexing of components while in transit.

7. CONTRACTOR is responsible to carefully inspect the tank upon arrival and shall note any shipping damage on the Bill of Lading, and will immediately contact the fabricator to arrange inspection and repairs, if necessary.

3.5 INSPECTION

A. Inspection of all products fabricated to this Specification is required prior to shipment unless specifically waived in writing by ENGINEER. This shall include:

1. Visual inspection to the requirements of ASME RTP-1, Level II.

2. Barcol hardness measurements per ASME RTP-1..

3. Acetone sensitivity test for all internal secondary bonds.

4. Glass content by ignition loss on three cutouts per ASTM D2584.

5. Shop hydrotest.

B. A clearance for shipment shall not relieve the CONTRACTOR's responsibility as to warranty, quality of materials and workmanship and dimensional conformity with the Drawings.

C. ENGINEER will be permitted access to the plant area at all times during fabrication and shall be notified one week prior to the estimated date of fabrication.

D. Repairs authorized by ENGINEER shall be reinspected before final acceptance unless specifically waived.

E. Noncompliance with this Specification or evidence of poor workmanship shall be cause for rejection.

F. Field Testing/Inspection: After final installation, each tank shall be hydrostatically tested BY THE CONTRACTOR to detect any damage during shipment and installation.

1. Testing Before Equipment is Attached:

a. Plug outlets.

b. Fill with chemically compatible liquid. c. Check for leaks.

G. Testing During and After Fabrication: The following test shall be conducted and results reports received by engineer before the tank leave the manufacturing premises.

1. CONTRACTOR shall employ services of independent testing laboratory qualified to perform quality control testing.

a. Samples:

1) Number: 1 per 1,000 SF of surface area, minimum of 2 per tank.

2) Locations: As selected by testing lab, cut-outs from nozzles acceptable. b. Tests:

1) Glass content.

2) Tensile strength.

3) Flexural strength.

4) Modules of elasticity.

5) Hardness. c. Tolerances:

1) Products which do not meet or exceed the Specifications will be rejected.

2) Out-of-Round or Parallel: Per ASME RTP-1 requirements.

3) Flanges:

(a) Thickness: +1/32 inch.

(b) Flat and True: +1/32 inch.

(4) Surface characteristics: As specified.

H. The ENGINEER or his designated representative may inspect the fabrication and manufacturing process with a 24-hour prior notice given to manufacturer.

Sludge Dewatering and Odor Control at Plant 1 FRP TANKS

3.6 MANUFACTURER’S FIELD SERVICES

A. Furnish the services of authorized technical representatives of the Manufacturer to assist/inspect the installed equipment and to certify that the equipment has been properly installed and is ready to operate, train OCSD personnel, conduct pre- operational mechanical checkout of the equipment, place equipment into operation, optimize the performances of the equipment and perform the field performance testing.

B. At a minimum, conduct two separate site visits as follows:

1. Inspection of equipment installation (4 hours minimum)

2. Training of OCSD Personnel: See Specification section 01820, Training of

OCSD Personnel, for requirements.