section 13205 bleach storage tanks - d.n. higginsdnhiggins.com/docs/rfq _14-6213-15 spec -...

13205-10

NCWRF BLEACH TANK REPLACEMENT

SECTION 13205

BLEACH STORAGE TANKS

PART 1 - GENERAL

1.1 SECTION INCLUDES

A. Furnish all labor, materials, equipment, and incidentals required to install, field test,

complete, and make ready for service vertical fiberglass reinforced plastic (FRP)

storage tank(s). The tanks shall be designed for use with 12.5-15 percent commercial

sodium hypochlorite (NaOCl) solution.

B. Chemical storage tank shall be furnished complete with all associated appurtenances

such as hardware, anchorage, piping, piping supports, manways, safety ladder, top

hand railing, reverse float level indicator, connection for ultrasonic level indicators,

etc., as specified herein or as otherwise required.

C. It is the intent of this Specification to obtain an installation complete in every necessary

detail whether or not covered by the Specification. Any omission of required

equipment from the Specification shall not relieve the manufacturer of his

responsibility to satisfy this intent.

D. Any drawings provided are for tank dimensions and nozzle orientations only and shall

not be used for tank construction.

E. Piping shall be as shown on the drawings, specified herein, and as required to match

existing conditions.

1.2 REFERENCE SPECIFICATIONS, CODES, AND STANDARDS

A. U.S. Department of Commerce Voluntary Product Standard PS-15-69

B. ASTM C 581 - Standard Practice for Determining Chemical Resistance of

Thermosetting Resins Used in Glass-Fiber-Reinforced Structures Intended for Liquid

Service

C. ASTM C 582 - Standard Specification for Contact-Molded Reinforced

Thermosetting Plastic (RTP) Laminates for Corrosion-Resistant Equipment

D. ASTM D 2310 - Standard Classification for Machine-Made “Fiberglass” (Glass-

Reinforced Thermosetting-Resin) Pipe

E. ASTM D 2471-71 - Standard Test Method for Gel Time and Peak Exothermic

Temperature of Reacting Thermosetting Resins

F. ASTM D 2517 - Standard Specification for Reinforced Epoxy Resin Gas Pressure Pipe

and Fittings

G. ASTM D 2563 - Standard Practice for Classifying Visual Defects in Glass-Reinforced

Plastic Laminate Parts

H. ASTM D 2583 Standard Test Method for Indentation Hardness of Rigid Plastics by

Means of a Barcol Impressor

13205-11


I. ASTM D 2584 Standard Test Method for Ignition Loss of Cured Reinforced Resins

(Burn Test)

J. ASTM D 2996 Standard Specification for Filament-Wound “Fiberglass” (Glass Fiber-

Reinforced Thermosetting-Resin) Pipe

K. ASTM D 3299 Standard Specification for Filament-Wound Glass-Fiber-Reinforced

Thermoset Resin Corrosion-Resistant Tanks

L. ASTM D 3982 Standard Specification for Custom Contact Molded “Fiberglass” (Glass

Fiber-Reinforced Thermosetting Resin) Duct and Hoods

M. ASTM D 4021 Standard Specification for Glass Fiber-Reinforced Polyester

Underground Petroleum Storage Tanks

N. ASTM D 4097 - Standard Specification for Contact-Molded Glass Fiber-Reinforced

Thermoset Resin Corrosion-Resistant Tanks

O. ASME Section X Vessel Code

P. ASME/ANSI RTP-1 Reinforced Thermoset Plastic Corrosion-Resistant Equipment

Q. ASME Code for Pressure Piping B31.3, Non-Metallic Section

R. ICBO Report ER-4055 Class 5 FRP Duct Systems for Removal of Nonflammable

Corrosive Fumes and Vapors.

1.3 SUBMITTALS

A. Shop Drawings:

1. The Contractor shall be responsible for coordinating all interfaces with related

mechanical, structural, electrical and instrumentation and control work. The

Contractor shall be responsible for providing all accessory equipment and all

work associated with installation of the equipment.

2. Shop Drawings for the FRP tanks shall include as a minimum the following:

a. Manufacturer’s catalog information, descriptive literature,

specifications, and materials of construction and chemical resistance.

b. Resin and materials of construction including thickness of each layer.

c. Service Conditions: Chemical environment and temperature.

d. Details of FRP ladders, grating and grating support systems and

handrails.

e. Details of tie-down systems for all storage tanks and appurtenances.

f. Dimensions of tanks, fittings, pipe connections, manways and

appurtenances.

g. Total operating weight of each tank and fittings.

h. Dimensions, orientation and location of nozzles showing details of

construction and attachment to tank.

i. Complete, detailed instructions on handling and installation of tanks.

j. Submit a data sheet from resin manufacturer listing nomenclature,

composition and characteristics of the resin.

k. Submit a copy of manufacturer’s valid ASME RTP-1 Certificate of

Authorization.

13205-12


3. Contractor shall submit detailed fabrication drawings including design

calculations for structural design of tank, shell, lifting and tie down systems,

tank anchor lugs and anchor bolts, signed and sealed by a professional Engineer

licensed in the State of Florida. Design calculations shall be submitted with the

shop drawing. Submission of design calculations is intended to indicate that the

equipment was designed by a qualified individual. Design calculations will not

be reviewed for completeness or correctness. The design of the tanks shall be

the responsibility of the manufacturer.

4. Contractor shall submit fabricator’s recommended bolt torques for all bolted

FRP connections.

B. Post-Fabrication Submittals

1. Submit complete installation, operation and maintenance manuals including as-

built drawings.

1.4 PRODUCT DELIVERY, STORAGE, AND HANDLING

A. Be responsible for the safe transportation to the job site, including any freight cost and

necessary permits, handling, and open air storage of the tanks and other materials

purchased as specified in this Section.

B. Tanks delivered to the job site shall be inspected immediately by CONTRACTOR for

damage, unloaded and stored with a minimum of handling. Comply with

manufacturer's recommendations in handling and storing tanks. Tanks shall be shipped

empty; all interior components shall be shipped separately.

C. In general, tanks shall be:

1. Checked and tied down to prevent being blown by wind.

2. Vented to allow for temperature changes that may affect their integrity.

3. Provided with opening protection to exclude foreign matter.

D. The manufacturer shall protect all flange faces and any fragile appurtenances or sub-

assemblies, with proper packaging, in order to prevent one piece from impacting with

another, and by crating or other means for shipment.

E. Impact of tools or other heavy objects shall be avoided. Impacts may result in a

fracture of the inner lining and affect the service life of the equipment.

F. Large sub-assemblies should be supported during unloading to prevent excessive

deflection and overstressing.

G. Equipment and materials shall be stored so as to keep free from moisture, damage, and

deterioration.

H. Tanks shall be protected, by padding or bracing, from banding or ropes used in

shipment. No chains are to be used to secure any tanks in transportation.

13205-13


I. Tanks shall be clearly marked for any precautions in handling and transportation.

1.5 RESPONSIBILITIES

A. The tank manufacturer shall be fully responsible for the structural design, structural

integrity, and water tightness of the tanks including all anchorage and connections..

1.6 MANUFACTURER’S SERVICE REPRESENTATIVE

A. The services of a qualified manufacturer's technical representative who shall

adequately inspect the proper installation of each tank and supply a written installation

certification to the contractor. Initial start-up and operation is not required by the tank

representative.

1.7 QUALITY ASSURANCE

A. Manufacturer: The materials covered by these Specifications are intended to be

standard equipment of proven reliability and as manufactured by reputable

manufacturers having experience in the production of such equipment. The equipment

furnished shall be designed, constructed, and installed in accordance with the best

practices and methods and shall operate satisfactorily when installed and operated per

manufacturer's recommendations. FRP tanks shall be manufactured by one of the

following firms, in strict compliance with those specifications. No alternate

manufacturers will be considered.

1. BELCO Manufacturing Co., Inc .

2. Diamond Fiberglass

3. Plas-Tanks Industries, Inc.

B. Qualifications

1. Fabricator’ s Quality Assurance Supervisor: Minimum of 5 year’s experience

with the fabrication of fiberglass structures.

2. Designer: Registered professional engineer licensed in the state of Florida.

C. Inspection and Testing Requirements: The Owner reserves the right to reject delivery

of any or all pieces of equipment found, upon inspection, to have any or all of the

following: blisters, chips, crazing, exposed glass, cracks, burned areas, dry spots,

foreign matter, surface porosity, sharp discontinuity or entrapped air at the surface of

the laminate. Any item which does not satisfy the tolerances as below shall be

rejected:

13205-14


Defect Inside Surface Outside Surface

Blister None Max. dimensions: 1/4” diameter by

1/8” high; Max density: 1 per sq.

ft.; Min. separation: 2” apart

Chips None Max. dimension of break: 1/4" and

thickness no greater than 10% of

wall thickness; Max. density: 1 per

sq. ft.

Crazing None Max. length: 1/2"; Max. density: 5

per sq. ft.; Min. separation: 2”

Cracks None None

Exposed Glass None None

Scratches None Max. length: 1”; Max. depth: 0.010”

Burned Areas None None

Surface Porosity None None

Foreign Matter None None

Sharp

Discontinuity

None None

Pits Max. 1/8 inches, dia. by

1/32 inches deep; Max: 10

per ft2

Max. 1/8” dia. by 1/16” deep; Max:

10 per sq. ft.

Dry Spot None 2 sq. in. per sq. ft.

Entrapped Air None at the surface 1/16

inches and 10 per square in.

max

1/8” and 4 per sq. in. or 1/16” and 10

per sq. in. within laminate

D. The Owner reserves the right to be present at the fabricator’s facility for visual

inspection of equipment to be supplied.

13205-15


PART 2 - PRODUCTS

2.1 GENERAL

A. The manufacturer is responsible for the coordination and selection of corrosion

resistant materials for the chemical herein specified. The chemical storage tank

manufacturer shall become familiar with the characteristics of the specified chemical

and guarantee the suitability of the materials used in manufacturing of the tanks and

accessories. The Contractor and manufacturer shall include all features as necessary

for satisfactory operation of the systems for the specified chemical.

B. Tank capacity (volume) specified shall include only that volume in the straight shell

below the overflow pipe invert elevation and above the pump suction connection. At

least 4 inches of freeboard shall be provided between the invert elevation of the

overflow pipe and the top of the straight shell.

C. Storage tanks shall be made of materials that can withstand the maximum storage

temperature. Chemical properties are as follows:

Parameter Sodium Hypochlorite

CAS Number: 7681-52-9

Storage Concentration: 12.5 – 15%

pH: 12.0

Boiling Point, oF: 212

Chemical Specific Gravity: 1.05

Design Specific Gravity: 1.9

Design Temperature, oF: 120

D. The Contractor and tank manufacturer shall be fully responsible for the structural

design and integrity and water-tightness of the tanks, including all anchorages and

connections.

2.2 TANK MATERIALS AND CONSTRUCTION

A. Tank shall be mounted on level concrete housekeeping pads. Flat bottom tanks shall be

provided with a flush bottom drain. The concrete housekeeping pad shall be provided

with a notch in the pad to accommodate the flush bottom drain. For replacement tanks

verify that existing notch is adequate for new tank; modify and/or provide notch as

necessary.

B. Tanks shall be designed per ASME RTP-1, Part 3 (3A or 3B as applicable). Vessel

major components, shell joints (secondary bond overlays), flanged nozzles, manways

and reinforcement of cutouts are fabricated to ASME RTP-1 Latest Edition, Section 4-

300 thru 4-600 as applicable using Type I, Type II, or Type X laminates. Corrosion

liner thickness shall be excluded from the structural calculations. ASME Stamp is Not

Required.

13205-16


C. All tanks and related FRP accessories shall be fabricated in a controlled and well

ventilated structure protected from weather and temperature extremes. Entire

fabrication, curing and assembly process of any piece of FRP equipment shall be

indoors.

D. Resin:

1. The resins used in fabrication shall be premium grade vinyl ester such as

Ashland Chemical’s Derakane 411 or Hetron 922, or equal.

a. For tanks in sodium hypochlorite service, the corrosion liner resin

shall be a premium grade brominated vinyl ester, such as Hetron 992, or

equal. The structural layer resin shall be Hetron 922 or equal.

2. For applications requiring fire-retardant resin, the Fabricator’s fire retardant

version of the resins noted in shall be used.

3. The resin used shall not contain any fillers, pigments, dyes, or colorants, which

may interfere with visual inspection of laminate quality, except as required for

viscosity control. The limit of filler shall be 5 percent by weight of thrixotropic

agent, Cab-O-Sil or equal, and shall not interfere with visual inspection. No

fillers or bulking agents shall be used in the exterior structural layer to decrease

the glass loading ratio.

a. Vessels fabricated for sodium hypochlorite service must be fabricated

without the use of thixotropic agents, as the sodium hypochlorite reacts

with the thixotropic agents, compromising the corrosion resistance of

the vessel.

4. The cure system used for the resin shall be in accordance with the resin

Fabricator’s current recommendations. Proper curing of the resin is the

Fabricator’s responsibility. All products fabricated to this specification shall be

cured to at least 90% of the minimum Barcol hardness specified by the resin

Fabricator. (Note: The use of paraffin in the resin or the use of Nexus veil may

lower the Barcols below the resin Fabricator’s specifications).

a. Vessels fabricated for sodium hypochlorite service must be fabricated

utilizing a BPO/DMA cure system for the corrosion liner and either

BPO/DMA or MEKP catalyst system for the structural layer.

5. The chemical-resistant surface, interior or exterior, shall not be acetone

sensitive. A wax containing resin coating, formulated according to the resin

Fabricator’s most recent recommendations, must be applied over any interior

secondary bonds to achieve an air-inhibited cure.

E. Reinforcement

1. One layer of Nexus surfacing veil shall be used to reinforce the inner surface.

Thickness of the resin rich inner surface shall be 0.020” to 0.025”. Total

thickness of the inner surface and interior layer shall be not less than 0.100”.

Nexus shall be Style 100-10 Aperturned 1.5 oz. Dacron polyester fiber 12-16

mils thick as manufactured by Burlington Glass Fabric Company.

13205-17


2. The interior layer shall be applied in a minimum of two passes of chopped

strand roving using automatic fabrication equipment which controls raw

material deposition to rotating molds through the use of digital readout

programmable controllers for raw material use verification. Resin content of

the interior layer shall be 70%, plus or minus 5%.

a. A double ply Nexus surfacing veil is required for vessels in sodium

hypochlorite service, due to the aggressive corrosion characteristics of

sodium hypochlorite. The application of the second ply of veil will

increase the inner surface thickness from 0.020” to 0.035”. The interior

layer reinforcement for sodium hypochlorite shall be boron free ECR

type glass as manufactured by Owens Corning ADVANTEX.

3. Structural portion of vessel wall shall utilize continuous winding glass for hoop

properties (and unidirectional glass as required for additional axial properties)

interspersed with automatically applied chopped glass and resin. Resin to glass

content shall be 50/50 plus or minus 5%.

F. All joints between tank components shall be covered by layup. Internal joints shall be

provided with a resin-rich surface veil overlay, reinforced with chemically resistant

surfacing material.

G. The tank top shall be domed with openings and connections as specified herein. The

tank top shall be able to support a 250-pound load on a 4-inch by 4-inch area, and other

loads as specified herein. Tank bottom to side-wall connection shall be seamless.

H. Structural Design:

1. The Contractor shall assign to the FRP tank manufacturer full responsibility for

the complete structural design of each FRP tank.

a. All tanks located outdoors shall be designed for anchorage and wind

loads in accordance with ASCE 7 as follows:

Wind Speed = 175 MPH

Exposure Category = C

Importance Factor = 1.15

b. Design for Seismic forces

Ground Acceleration: Per ASCE 7

Occupancy Class: 3

Importance Factor: 1.25

Site Class: D

Project Location: Zip Code 34110

2. All tanks shall be capable of withstanding a surcharge of 12 inches water

column when full and a negative pressure of 6 inches water column when

empty.

3. Tie-down Ring/Mounting Lugs: FRP or Type 316 stainless steel (integrally

assembled to tank). Provide three to one safety factor with an increase in

allowable stress of one-third against seismic forces as set forth for applicable

zoned seismic area. Mounting ring / tie down lugs shall be factory assembled

as part of the tank construction.

13205-18


4. Furthermore, anchor lugs for all tanks installed outdoors and indoors shall be

adequate to withstand flotation.

5. The tank manufacturer shall design anchors for securing the tanks via the

anchor lugs to concrete housekeeping pads. The anchors shall be fabricated of

Hastelloy-C or titanium or 316 stainless steel. The concrete housekeeping pad

will have a compressive strength of 4,000 psi at 28 days.

6. The Contractor shall be responsible for furnishing and installing the anchors.

2.3 CONNECTIONS AND ACCESSORIES

A. Connections: All connections/openings shall be flanged in accordance with ANSI

B16.5 Class 150 and provided with flanged gasket. Flanged connections, nozzles, and

openings shall be FRP gusseted and flat face. Threaded connections are not allowed,

no exceptions.

B. Nozzles: All nozzles for Sodium Hypochlorite service shall be flush-type per ASTM

D3299 or ASTM D4097. Penetrating-type installation is not allowed for Sodium

Hypochlorite service. All nozzles shall be gusseted.

C. Fill Lines: All pipe supports, hardware, accessories, etc., shall be provided. Vertical

piping into the tanks shall be supported at minimum every 2.5 feet on-center except

where otherwise indicated on the Drawings, and shall be parallel to the tank wall and

not less than 3 inches from the tank wall.

D. Pump Suctions: All pipe supports, hardware, accessories, etc. shall be provided.

E. Vent Lines: Vent lines shall be top-mounted. Vent lines shall be supplied and

furnished by the Contractor as required or as directed by the Engineer. Vent lines shall

be as specified herein and as indicated on the Drawings. Vents shall be covered with

fiberglass fibermesh screen.

F. Overflow Line: The tanks shall be provided with an overflow pipe with pipe supports

as specified and as indicated on the Drawings.

G. Drain Line: The tanks shall be provided with a drain pipe as specified and as indicated

on the Drawings. Drain connection shall be full-invert type connection and flush to the

bottom of the tank.

H. Pipe Supports and Accessories: Pipe supports, hardware, and accessories on tanks shall

be provided by the tank manufacturer. Vertical piping and electrical conduit from the

tanks shall be supported every 2.5 feet and shall be parallel to the tank wall and not

more than 6 inches from the tank wall. All supports, hardware, and accessories shall be

fiberglass or 316 Stainless Steel. Provide pipe support clips or brackets to secure all

vertical piping and conduit to the exterior of the tank. Pipe support clips shall be

laminated to the tank exterior wall and designed for 150 mph winds.

13205-19


I. Level Sensor/Element: The tanks shall be provided with a flange outlet for an

ultrasonic level sensor and a suitable blind flange. The tank manufacturer shall

coordinate the mounting and connecting requirements with the Contractor and the

requirement for the transducer.

J. Reverse Float Tank Level Gauge:

1. Each tank shall be equipped with a reverse float visual liquid level gauge with

pipe supports.

2. The gauge assembly shall be comprised of a float mounted inside the tank, a

cable and pulley system, and a clear PVC or polycarbonate sight tube with

calibrations marked in inches from the bottom of the gage.

3. The tube shall be mounted on outside the tank and a red or orange visual

indicator within the sight tube.

4. Adjacent to the level gage, provide a calibration strip marked in gallons.

5. All components of the reverse float visual liquid level gauge shall be

compatible with the chemical stored within the tank. Cable shall be Teflon

(PTFE) or equal.

6. The reverse float level gauge shall be as manufactured by Precision Tank

Gauge, Inc., or approved equal.

K. Manways: Provide 24-inch diameter top manway. Provide 30-inch diameter side

manway. Manways shall be flat-faced flanged manway with gasket and blind flange

that are chemically resistant for internal access. Flange hardware (i.e., bolts, washers,

nuts, etc.) shall be 316 stainless steel. Gaskets shall be 1/8 inch thick full face Viton or

EPDM gaskets.

L. Access Ladder:

1. Tanks shall be equipped with an exterior access ladder with safety cage for

access to the top of tank.

2. Construction: Heavy-duty fiberglass reinforced vinyl ester capable of a 250

pound load. Ladder shall be 18-inches between side rails, 12-inches between

rungs. Rungs shall be non-slip.

3. Ladder to meet OSHA requirements and be compatible with chemical service.

4. FRP angle clips shall be furnished for mounting the bottom of the ladder to the

concrete pad.

5. The tank top shall be equipped with ladder clips to bolt ladder handrails thereto.

6. Ladder to be manufactured by Ultra Fiberglass Systems, or approved Equal.

M. Lifting Lugs: The tank shall be provided with a minimum of four lifting lugs, three of

them around the top edge of the tank and one at the base of the tanks. Lugs shall be 316

stainless steel. Lifting lugs shall be capable of withstanding weight of an empty tank

with a safety factor of 3 to 1.

13205-20


N. Certification Label: The tank shall be provided with a permanently attached label

providing the following information:

1. Type of material stored

2. Concentration of material stored

3. Specific gravity

4. Design temperature

5. Type of liner resin and reinforcement

6. Type of surface veil

7. Tank capacity

8. Weight Empty

9. Diameter

10. Sidewall Height

11. Manufacturer

12. Date of manufacture

13. Serial Number

O. Platform and Handrail: Tank manufacturer shall design and furnish tank with a half-

round platform with FRP grating and perimeter FRP handrail at the top of the tank.

1. The platform shall be designed to support a concentrated live load of 400

pounds on an area of 36 square inches or a uniform live load of 50 pounds per

square foot, whichever greater. Deflection shall be limited to ¼” or span

divided by 200.

2. Design Handrail per IBC/UBC; concentrated load of 200 lb (any location; any

direction); Uniform load of 50 lb per foot (top rail only; any direction)

3. Platform and handrail to be manufactured by Ultra Fiberglass Systems, or

approved Equal.

2.4 FIBERGLASS REINFORCED PLASTIC STORAGE TANK SCHEDULE

A. Contractor shall provide tanks in accordance with Tables 13205-1 and 2.

PART 3 - EXECUTION

3.1 INSTALLATION

A. The Contractor shall remove and dispose of the existing tank. Existing tank is leaking.

Sodium hypochlorite solution may be in the interstitial space.

B. The Contractor shall furnish and install the Fiberglass Reinforced Plastic storage tanks,

and related items in accordance with the manufacturers' recommendations.

C. All piping, valves, fittings, conduit, wiring, etc., required to interconnect system

components shall be furnished and installed by the Contractor. Unless otherwise noted

on piping schedule, piping shall be Schedule 80 CPVC.

13205-21


3.2 TANK BOTTOM BUFFER PAD

A. Liquid grout such as grout, epoxy, etc. MUST NOT be used under flat bottom tanks.

B. For each tank, install a minimum of 3 layers of 30 pound roofing felt paper between

the concrete housekeeping pad and the flat bottom storage tank, or in accordance with

the tank manufacturer’s recommendations.

C. When applying the roofing felt or manufacturer’s recommended padding, there shall be

no overlaps or wrinkles which cause raised ridges under the tank bottom.

3.3 FACTORY COATINGS – OUTDOOR EXPOSURE

A. This article applies to tanks that are subject to permanent outdoor exposure.

B. The non-process side layer shall be factory finished with two white pigmented exterior

gel coats containing ultraviolet (UV-9) light inhibitors.

3.4 TESTING

A. Upon completion of installation of tank and prior to connecting piping, the Contractor

shall provide blind flanges or other suitable plugs for all openings in the tank, fill tanks

with clean water provided by the Owner from a source approved by the Engineer and

conduct a leakage test as specified herein. Tanks shall be filled up to the top of the

straight shell of the tank and left to sit over a 2-day test period. There shall be no

leakage over the test period. Leakage around openings in the tank shall be stopped by

tightening nuts and bolts or replacing gaskets as required. Upon satisfactory

completion of leakage test, Contractor shall drain the tanks and dispose of water in a

suitable manner.

B. Upon completion of water test, Owner will fill tank with bleach. After 2-days,

contractor shall check for leaks.

Table 13205-1

Fiberglass Reinforced Plastic Chemical Storage Tank Schedule

Service 12.5-15% Sodium Hypochlorite Solution Storage

No. of Tanks: Two (2)

Min. Tank Capacity (gal): 12,000

Tank Diameter (ft): 12’-0”

Sidewall Height 15’-0”

Tank Type: Vertical, Cylindrical, Pad Mounted

Top Type Domed

13205-22


Table 13205-2

Nozzle and Equipment Schedule for Chemical Storage Tanks

Number per tank Size Description Location

1 24” Manway Dome

1 30” Manway Sidewall

1 4” Metering Pump Suction

Flush Bottom Type

Sidewall

1 6” Vent Dome

1 4” Chemical Fill Dome

1 2” Softened Water Fill Dome

1 3” Recirculation Pump Discharge Dome

1 4” Recirculation Pump Suction

Flush Bottom Type

Sidewall

1 4” or 6”

As required

Flanged Ultrasonic Level Port Dome

1 2” Overflow Sidewall

1 As required Reverse Float Tank Level

Gauge

Dome

1 set Pipe supports for electrical conduit for

transducer cable

Sidewall

All nozzles and equipment may not be listed in this table; provide other nozzles and equipment

as specified herein.

END OF

SECTION

section 13205 bleach storage tanks - d.n. higginsdnhiggins.com/docs/rfq _14-6213-15 spec -...

Documents