Attachment 3 - 335617 UNDERGROUND FUEL STORAGE TANKS AND DISTRIBUTION OBO.pdf

JUBA ELECTRICAL UPGRADE DEVELOPMENT July 13, 2020

JUBA SOUTH SUDAN Issued for Bid

UNDERGROUND FUEL STORAGE TANKS AND DISTRIBUTION SECTION 335617 - 1

SECTION 335617 - UNDERGROUND FUEL STORAGE TANKS AND DISTRIBUTION

PART 1 - GENERAL

1.1 SUMMARY

A. Provide piping for compound or portion of facility.

B. Related Sections include the following:

1. Section 230905 "Instrumentation and Controls for HVAC" for building automation system (BAS).

2. Section 263214 “Engine Generators.”

3. Section 335217 “Motor Vehicle Fuel Dispensing.”

1.2 REFERENCE STANDARDS

A. American Society for Testing and Materials (ASTM) Specification D4021: Glass Fiber

Reinforced Polyester Underground Petroleum Storage Tanks.

B. Underwriters Laboratories, Inc. (UL) 971: Outline of Proposed Investigation for Non-metallic

Underground Piping for Flammable Liquids.

C. Underwriters Laboratories, Inc. (UL) 1316: Glass Fiber Reinforced Plastic Tanks for the

Underground Storage of Petroleum Products, Alcohols and Alcohol-Gasoline Mixtures.

D. National Fire Protection Association (NFPA) 30: Flammable and Combustible Liquids Code and NFPA 31: Standard for the Installation of Oil Burning Equipment.

E. 40 Code of Federal Regulations (CFR), United States Environmental Protection Agency (EPA), Parts 280, Technical Standards and Corrective Actions for Owners and Operators of

Underground Storage Tanks.

1.3 SUBMITTALS

A. Product Data: For the following:

1. Protective coatings, level monitoring and alarm system, tank gauges, overfill protection system, containment manhole, shutoff valves, submersible fuel oil pump, and fuel fill panels.

B. Shop Drawings: Submit shop drawings for the following:

a.

2. Tank System: Include critical dimensions and show locations of fittings and accessories that are part of the double wall fiberglass storage tank and associated storage tank system.

a. For each tank, include couplings, manholes, turbine enclosures, manways, anchor hold down straps, double wall piping from remote fueling point in secure compartment with locked access to final fuel delivery point, liquid level indicator, all sensors in system and control panels.

UNDERGROUND FUEL STORAGE TANKS AND DISTRIBUTION SECTION 335617 - 2

3. Fuel Panels: Include fuel fill panel installation detail showing front closed, front open, and back and side views of fill panels. Show all piping and conduit, junction boxes, electrical connections, and alarm panel.

4. Level Monitoring and Alarm System: Include wiring diagrams for connection of various tank sensors to system panel.

C. Qualification Data: For manufacturer and installer.

D. Field Report: For start-up service recording inspections and results of tests.

E. Installation Instructions and Checklists: Include Manufacturer’s installation instructions for fuel system piping, and level monitoring and alarm system.

1. System supplier shall submit comprehensive checklist of quality and safety items critical to system and certify that installation has been done in accordance with contract requirements and local applicable fire and environmental codes.

F. Maintenance Data: Include list showing recommended maintenance frequency for system components.

1. Provide spare parts lists required for each element of fuel system.

G. Storage Tank Management Plan (STMP): Include the following content and organization in plan:

1. Introductory Material:

a. Title page with title “Storage Tank Management Plan (STMP),” Post name for which plan applies, and month and year of accepted plan.

b. Table of Contents and List of Appendices. Include major and minor headings used throughout STMP.

c. Executive Summary that is appropriate for material contained in STMP. Include statement of purpose of STMP and review frequencies for update that should be followed.

2. Section 1 – Introduction:

a. Explain particular details about Post where storage tank systems are located, list of equipment that depends on storage tanks for dependable supply of fuel, and specific details about storage tank systems at Post.

3. Section 2 – Regulations:

a. Summarize regulations that govern installation and operation of Storage Tank.

Include appropriate references to CFR, Part 280 and local standards.

b. Outline specific record keeping requirements for proper operations and maintenance of storage tank system, and recommend procedure for maintaining these files.

c. Include descriptive paragraph for each storage tank subsystem, including identification of regulations applying to each of those subsystems.

4. Section 3 – Responsibilities:

a. List by staff position those responsible for various aspects of record-keeping and operations and maintenance of storage tank system.

b. Include Table with points of contact and associated contact information.

5. Section 4 – Underground Fuel Storage Tank Systems:

a. Identify specific conditions or requirements by local ordinances or permits for these tanks.

b. Maintain historical record of all closed tanks.

UNDERGROUND FUEL STORAGE TANKS AND DISTRIBUTION SECTION 335617 - 3

c. List all existing tanks with location, use, date of installation, capacity, and similar information.

d. Specify forms to be used for record keeping activities associated with operations and maintenance of tanks.

e. Specify standard operating procedures for various operations associated with tank systems.

f. Specify maintenance requirements of tank.

6. Section 5 – Spill Prevention, Control, and Countermeasure Plan (SPCC):

a. Identify oil discharge risks, spill prevention measures, and contingency plans.

Model after guidance of 40 CFR 112.7, paragraphs (a) through (d), which sets out various prevention and control measures that Plan should address. Plan shall be prepared and signed by professional engineer familiar with fuel system and associated regulatory standards.

7. Section 6 – Appendices:

a. Acronyms and abbreviations used in STMP.

b. Installation checklists and warranty information.

c. Tank chart for each tank.

d. Product literature associated with various components of system. Specific parts used shall be highlighted or noted to readily identify installed parts.

e. Copies of all applicable permits. If there are no required permits, a page shall be inserted that contains wording that indicates this condition.

f. List of qualified contractors who can repair various aspects of tank system.

Identify which portion of system each contactor can perform, and appropriate contact information.

g. Certifications of Leak Detection Evaluations for various aspects of system, and test used to determine whether tank system is tight. Refer to www.epa.gov/oust/pubs/ldlist.htm.

h. List of monitoring wells associated with present and past tank systems, and identifying their current status. Include unique labels for each well, and specific location identifier. This requirement only applies if monitoring wells have been used.

i. Copy of EPA’s publication, “Operating and Maintaining Underground Storage

Tank System,” EPA 510-B-00-008.

1.4 QUALITY ASSURANCE

A. Basis of Design: This Section identifies “Basis of Design” for various equipment and components. Other products from the identified manufacturer or other manufacturers are acceptable which conform to requirements of this Section.

B. OBO STANDARD DRAWING INDICATION OF SIZE, PROFILE, AND DIMENSIONAL

REQUIREMENTS OF EQUIPMENT AND ACCESSORIES RELATED TO THIS SECTION

ARE BASED UPON MODELS IDENTIFIED AS “BASIS OF DESIGN’ IN THIS SECTION.

ADJUST DRAWINGS TO REFLECT SELECTED COMPARABLE PRODUCTS.

C. Comply with the OBO Electrical Code (NFPA 70, “National Electrical Code” as amended by

OBO).

D. Listing and Labeling: Provide voltage regulators specified in this Section that are listed and labeled. Terms "Listed" and "Labeled" shall be as defined in Article 100 of NFPA 70. Listing http://www.epa.gov/oust/pubs/ldlist.htm

UNDERGROUND FUEL STORAGE TANKS AND DISTRIBUTION SECTION 335617 - 4

and Labeling Agency Qualifications: "Nationally Recognized Testing Laboratory" as defined in OSHA Regulation 1910.7.

1. Fuel Storage Tanks:

a. Certification Plates: Affix UL Labels for petroleum products affixed to each tank.

b. All monitoring equipment, including reservoirs and electronic controls, shall be

UL Listed.

c. Provide tank manways with UL Listed gaskets, bolts and cover.

d. Tank Laminate: UL Listed for compatibility with monitoring fluid.

e. Containment Collar Sensor: Electrical components must be U. L. listed or accepted.

f. Flexible Connectors: Provide UL Listed flexible connectors at equipment.

E. Manufacturer Qualifications: Manufacturers shall have produced similar systems for at least the past ten years.

F. Installer Qualifications: Installers who have been trained and certified by manufacturer for installation of systems required for this project.

1.5 DELIVERY AND HANDLING

A. Conform to instructions of storage tank manufacturer’s installation manual regarding movement and temporary placement of storage tanks from point of distribution to point of installation.

Tanks shall only be moved using all manufactured lug lifts with guidelines that are correctly angled with respect to tank surface in accordance with manufacturer’s instructions. Do not lift or hoist underground storage tanks while under pressure. Do not move tanks with chains or cables around tank, and do not be roll or drop. Protect tanks from damage in transit.

1.6 WARRANTY

A. General: Manufacturer’s standard form in which manufacturer agrees to repair or replace components which fail in materials or workmanship within specified warranty period.

B. Fuel Piping and Related Equipment:

1. Provide written warranty executed by manufacturer of fuel piping and related equipment.

Warrant piping and related equipment against failure, including cracking, break-up, collapse, and leakage.

a. Warranty Period: 30 years.

PART 2 - PRODUCTS

2.1 TANK ACCESSORIES

A. Flanged Manways:

1. Each manway shall be 550 mm inner diameter. Provide manway with each tank. Locate manways in accordance with recommendations of tank manufacturer.

UNDERGROUND FUEL STORAGE TANKS AND DISTRIBUTION SECTION 335617 - 5

B. Sounding Rod: Provide wooden gauging rod with plastic tip, graduated at 0.25 cm intervals.

Use this gauging rod in conjunction with manufacturer-supplied tank chart for calculating number of liters of petroleum product in tank.

C. Hydrostatic Monitor Accessories:

1. Brine Antifreeze Solution: Factory install, with the following characteristics:

a. Brine Solution: BAS-30 designation

b. Chemical Composition: 30 percent or more calcium chloride, 1 percent to 3 percent potassium chloride, and 1 to 2 percent sodium chloride. Balance of solution shall be water.

c. Visual appearance: Green in color, odorless fluid.

d. Specific gravity: 1.272-1.317 at 15.6 deg C.

e. Color: Color of brine solution shall be in sharp contrast to tank color to facilitate easy visual checking for tank damage.

D. Turbine Enclosure:

1. Watertight turbine enclosure shall consist of fiberglass reinforced plastic (FRP) enclosure body and FRP reducer with o-ring groove and o-ring gasket. Reducer opening shall be large enough (minimum of 711 mm diameter) to allow for removal of a 559 mm diameter manway lid. Turbine enclosure shall be minimum of DN1050, and maximum of

DN1200, and shall be capable of mounting to DN1050 secondary containment collar.

Enclosure body shall be capable of joining to 1067 mm or 1219 mm diameter secondary containment collar with leak-tight adhesive joint. Reducer shall be capable of joining to enclosure body with external leak-tight adhesive joint to allow for field installation of adhesive without entering enclosure.

2. Turbine enclosures shall be of variable length to correspond to required burial depth for tanks. Mark cut lines for field trimming on top 300 mm of turbine enclosure in 75 mm intervals.

3. Construct turbine enclosure lid of high-density polyethylene or other non-corrosive product, with top diameter to match turbine enclosure. Turbine enclosure lid outer diameter shall be small enough to be removed through 914 mm diameter street box. With lid installed, assembly shall provide watertight seal under standing water up to 305 mm over lid.

4. Turbine enclosure lid shall include friction-fit lid constructed of high-density polyethylene or other non-corrosive product, with outside diameter of DN675. Lid shall be able to support person standing on lid without damage to lid. One of lid handles shall be offset to aid in removal of lid; the other shall be centered on lid.

5. Manhole frame and cover over turbine enclosure lid shall be composite, H-20 rated type, sized DN900 or larger. Rain tight lids shall be provided with factory gasket and bolts or cams locks. Use stainless steel hex head bolts or cam locks to secure manhole cover for limited access. Provide two sets of tools to be used with lid or two wrenches for each type of cover to Contracting Officer/COR. Top seal caps on all tank opening within manholes shall be lockable.

6. Turbine Enclosure Adhesive Kit: Kit shall be manufacturer’s standard with quantities as recommended by manufacturer.

E. Flexible Entry Boots for Conduit:

1. Flexible entry boots shall be UL listed for this application

2. Fit containment chambers with conduit entry seals that are flexible and semi-absorbent to ground movement.

UNDERGROUND FUEL STORAGE TANKS AND DISTRIBUTION SECTION 335617 - 6

3. No metallic components shall be exposed to ground.

4. Materials of flexible boot assembly shall be chemically compatible with and resistant to materials and liquids encountered.

F. Secondary Containment Collar: Secondary containment collar shall be fiberglass reinforced plastic. Collar shall be DN1050 and factory installed. Collar shall include sensor-mounting bracket.

G. Containment Collar Sensor: Pre-assemble containment collar sensor, ready to wire. This float switch sensor shall be capable of detecting a 13 mm or more accumulation of liquid (water or product) in turbine enclosure. Construct float switch of Buna-N. House the float switch in plastic casing, and include mounting clamp.

H. Ladders: Standard ladders supplied by tank manufacturer.

I. Overfill Protection System for Gravity Fill Systems:

1. Basis of Design: EBW Auto Limiter II series with EBW Remote Fill Kit.

2. Provide automatic shut off valve designed to be installed at tank. Assume that 150 L of fuel will be in line at any time and will need to be accounted for during remote shutoff procedure. Valve shall reduce flow into tank by 90 percent at first stage which varies from approximately 85 percent (for tank size of 3,785 L) to 92 percent (for tank size of

37,850 L and larger) of tank capacity; reduction shall be field adjustable. Second stage shall vary from approximately 87 percent (for tank size of 3,785 L) to 94 percent (for tank size of 37,850 L and larger) of tank capacity. Once the second stage is reached, completely shut off the flow.

3. Construct valve body of cast aluminum, and internal guide rod of stainless steel.

4. Valve shall allow manual stick gauging of storage tank after valve has reached complete shut off.

5. Provide remote fill kit for use with automatic shut off valve.

J. Overfill Protection System for Pumped Fill Systems:

1. Basis of Design: Morrison Bros. Co. 9095AA0300 AV

2. Aluminum body valve that closes when fuel level reaches a preset warning level, with built in bleed hole for pressure relief when valve closes and anti-siphon protection

3. Aluminum drop tube compatible with valve

K. Tank Lifting Lugs: Provide lifting lugs on all tanks. Lugs shall be capable of withstanding weight of tanks with a safety factor of 3.

L. Fittings Threaded – NPT:

1. Threaded fittings on UL Listed tanks for storage of petroleum products shall be located in manway lid on tank, mounted within 300 mm of tank top centerline, and constructed consistent with requirements of the UL Listing. Provide fittings with threaded cast iron plugs.

2. Threaded fittings to primary tank cavity shall be DN100 or DN150. Standard threaded fittings shall be half couplings. Use reducers for smaller sizes.

3. Thread Standards: Threaded fittings shall have machine tolerances in accordance with

ANSI Standards for each fitting.

4. Strength: NPT fittings shall withstand minimum of 204 Newton-meters of torque and

UNDERGROUND FUEL STORAGE TANKS AND DISTRIBUTION SECTION 335617 - 7

5. 1357 Newton-meters of bending, both with a 2:1 factor of safety.

6. Terminate rigid vertical piping 102 mm from bottom of primary tank.

M. Containment Fill Manhole:

1. Manhole frame and cover lid shall be composite, H-20 rated type, sized DN300 or larger.

Rain tight lids shall be provided with factory gasket and bolts or cams locks. Use stainless steel hex head bolts or cam locks to secure manhole cover for limited access.

Provide two sets of tools to be used with lid or two wrenches for each type of cover to

Contracting Officer/COR. Interior of manhole shall have one-piece HDPE bellows liner attaching to top and bottom of manhole. Manhole shall have one piece fiberglass base with DN100 bottom connection for vapor recovery use or product fill use. Fill manholes shall contain spring-pull drain assembly for emptying manhole basin of spilled fuel.

2. Basis of Design: Emco Wheaton A1003-001 with drain for fill lines and A1003-002 without drain for vapor return lines.

N. Tank Monitoring Manholes:

1. Manhole frame and cover lid shall be composite, H-20 rated type, sized DN300 or larger.

Rain tight lids shall be provided with factory gasket and bolts or cams locks. Use stainless steel hex head bolts or cam locks to secure manhole cover for limited access.

Provide two sets of tools to be used with lid or two wrenches for each type of cover to

Contracting Officer/COR.

O. Fill Caps: Bottom opening shall have self-aligning, toggle-action design for easy coupling fill caps. Caps shall be lockable, cam-and-groove type caps made of aluminum or FRP material with Buna-N seals. Toggle pins and cams on caps shall be stainless steel, and links shall be plated steel. Vapor recovery line caps shall have impregnated orange color for identification.

1. Basis of Design: Emco Wheaton A97 for tight fill product caps and A99 for vapor adapter caps.

2.2 PIPING

A. General: Underground fill pipe, tank vent pipe, vapor return pipe, fuel oil supply pipe, and fuel oil return pipe shall be durable wall fiberglass piping or semi-rigid double-contained pipe.

1. Piping components shall be UL 972 for use as underground containment piping for gasoline, alcohol blended gasoline (with up to 100 percent methanol or ethanol), oxygenated fuels (up to 20 percent MTBE), AV-gas, jet fuel, motor oil, kerosene, or diesel fuel products.

2. Piping shall be rated by UL to pressure of 690 kPa at 66 deg C.

3. Fittings and accessories shall be provided by manufacturer and rated to the greater of 344 kPa or 1.25 times the working pressure.

B. Double Wall Fiberglass Piping

1. Materials:

a. Basis of Design: FRP epoxy made by filament winding system by Smith

Fiberglass Products, Inc.

b. Fittings shall be FRP epoxy made by compression molding process. Fittings shall be two-piece construction that will be bonded together at final assembly.

Fasteners may be used to assemble fitting pieces until adhesive cures. Integrity

UNDERGROUND FUEL STORAGE TANKS AND DISTRIBUTION SECTION 335617 - 8

of fiberglass system shall not rely on metallic components once adhesive is cured.

c. Adhesive shall be epoxy system that will develop adequate strength at 18 deg C to meet all strength requirements. Below 18 deg C, make available means of heat-assisted adhesive curing.

d. Provide containment fittings with 20 mm NPT outlets in bottom, rated for 68.9 kPa for pressure testing of containment system and draining secondary system.

C. Semi-Rigid, Double-Contained Pipe

1. Materials:

a. Basis of Design: UPP Pipe manufactured by PetroTechnik.

b. Coaxial semi-rigid high density polyethylene with nylon permeation barrier.

c. Fittings shall be manufacturer’s secondary containment and entry fittings. Pipe connections and entry fittings shall be fusion welded using manufacturer’s electro fusion welder.

d. Provide fusion welded secondary containment fittings with test ports for pressure testing of containment system and drainage secondary system.

D. Schedule 40, Steel Piping:

1. Above ground fuel oil suction, return piping, vent piping and all piping in tanks shall be

Schedule 40 (USA) seamless black steel, with butt welded joints for piping DN40 and larger, and socket weld joints for piping DN32 or smaller. Fuel oil suction and return piping shall not be smaller than DN2O, but may be reduced to size of tapping in apparatus as close as possible to apparatus. Return piping shall be same size as fuel oil suction piping unless otherwise required by manufacturer. Provide separate suction line from fuel oil storage tank to generator day tank for each generator day tank with integral pump. For "prime power" single generator installations, provide dual suction lines connected together inside Equipment Room with separate gate valve and check valve in each suction line.

a. Provide piping entering building with dielectric unions to prevent transmission of field current to building piping.

E. Coupling Kits: Provide by fuel pipe manufacturer for joining piping.

F. Flexible Connectors at Equipment: Provide UL 536 and NFPA 30 and 30A approved 321A, stainless steel flexible connectors with 0.38 mm thick wall and carbon steel Schedule 80 male hex NPT or EZ Fit/Quick-Connect ends on fuel supply piping at connection to equipment.

Pressure requirement is 344.5 kPa in accordance with UL. Seals shall be MH25059 listed, specially engineered polymer to withstand aromatic petroleum products, alcohols, and alcohol-gasoline mixtures.

G. Sumps: Sumps shall be watertight and accessible, constructed of polyethylene or fiberglass.

Use grade level sumps for transition into and out of ground for piping. Provide sump top, lid, gasket-seal joints, and sump entry boots for pipe penetrations. All below grade entries shall be made with fusion fittings or fiberglass entry fittings. Each sump shall be provided with an inspection port that allows inspection of the leak sensor as well as water/fuel removal.

2.3 LIQUID LEVEL AND LEAK MONITORING

UNDERGROUND FUEL STORAGE TANKS AND DISTRIBUTION SECTION 335617 - 9

A. Basis of Design: The following components from Pneumercator Company:

1. Electronic Fuel System Control Panel: Model TMS4000.

2. Tank Level Sensor/Transmitter: Model MP450S.

3. Tank Leak Sensor: Model RSU 800.

4. Turbine Enclosure Leak Sensor: Model LS 600 LDBN or ES835-200F with sensor fault detection.

5. Remote Alarm Panel: Model RA200KRM or RA400 for diesel and RA 300KRM explosion proof for gasoline.

B. General:

1. Provide multi-tank liquid level and leak monitoring system, capable of monitoring tank levels, tank leaks, and sump leaks. System shall consist of the following:

a. Electronic control panel.

b. Tank liquid level transmitter assembly for each tank.

c. Tank leak sensor for each tank capable of detecting break in inner and outer tank.

d. Turbine enclosure leak sensors for each tank turbine enclosure capable of detecting leak in enclosure.

e. Sump leak sensors capable of detecting fuel and water in sumps.

2. Principle of tank liquid level measurement shall be by Direct Lift Magnetic Float with

Manetores Resistance Transmitter.

3. Provide all wiring, including wiring from power source to control panel, and from control panel to probe assemblies and remote alarm console.

4. Provide remote alarm panel with locked access to inform truck operators when each tank approaches full level.

C. Electronic Fuel System Control Panel:

1. Provide controls and display for multiple tanks in single NEMA enclosure suitable for wall mounting. Use NEMA 12 for indoor applications and NEMA 4X for outdoor applications.

2. Provide front face of the panel with:

a. Color Touchscreen display showing each tank's liquid level in liters.

b. Normal/Alarm LEDs visible from at least 20 meters.

c. Indicating lights for each tank's high, low and critical tank level alarms.

d. Indicating lights for each leak sensor of each tank, tank turbine enclosure, and sumps.

e. Horn and horn reset button.

f. Touch keypads shall facilitate selection of tank, and for each tank keypads shall facilitate selection of testing, adjusting calibration, setting alarm limit, and operating in each mode.

g. Provide offset adjustment for easy field correction of level sensor installation height error.

h. Control panel shall use a microprocessor-based controller, and be user programmable to specific tank configurations encountered.

i. Control resolution shall be within 3 mm of liquid level in each tank.

j. Provide Modbus protocol for remote interface to Building Automation System

(BAS). Refer to Drawings for interface schematic.

k. Leak and level transmitter installation shall be intrinsically safe.

D. Tank Level Transmitter Assembly:

UNDERGROUND FUEL STORAGE TANKS AND DISTRIBUTION SECTION 335617 - 10

1. Each tank assembly shall contain resistive sensor/transmitter element bonded to 10 percent glass-filled polycarbonate track, and hermetically sealed within stainless steel vertical tube suspended into tank through a DN100 opening. Provide magnetic float guided along tube that continuously senses liquid level position to 3 mm accuracy, unaffected by conductivity, temperature, pressure, specific gravity, or other liquid variables.

2. Provide float for water detection that rests at bottom of tube to detect water in range of 25 to 75 mm off tank bottom.

3. Wiring to electronic control panel shall be 5 conductor, and made through DN25 opening in explosion proof housing provided integral to top of tank assembly.

E. Tank Leak Sensor:

1. Sensor shall consist of single float assembly capable of detecting breaks in inner or outer tank under all conditions. Single float and its stem shall be of non-corroding PVC to withstand reservoir brine solution, and shielded by PVC outer cylinder which rests on reservoir.

2. Wiring to electronic control panel shall be 2 conductor, and terminated at leak sensor using watertight connections.

3. Leak sensor shall actuate when brine solution in reservoir either falls below 50 mm, or rises above 280 mm.

F. Turbine Enclosure and Sump Leak Sensors:

1. Each leak sensor shall be simple, mechanical float switch input to electronic control panel, consisting of magnetic, Buna-N float encased within stainless steel outer shroud, and terminated with 2 conductor wire.

2. Leak sensor shall actuate above 13 mm of liquid along probe.

G. Remote Alarm Panel:

1. Alarm Panel shall consist of solid state electronic circuitry housed in wall mountable, weatherproof NEMA 4 enclosure for receiving signals from electronic control panel on overfill tank level and leak status.

2. Panel shall include alarm horn, red alarm status lights, reset button to silence horn and test button to demonstrate working condition.

2.4 FUEL OIL SHUT-OFF VALVES

A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1. Crane

2. Nibco

3. Jenkins

B. Provide hand-operated valves at fuel oil pump discharge and check valves at suction side so that fuel oil may be shut off and fuel oil pump removed. These valves are in addition to automatic valves.

UNDERGROUND FUEL STORAGE TANKS AND DISTRIBUTION SECTION 335617 - 11

C. Provide butterfly tank isolation valve in aboveground section of remote fill pipe just inside perimeter wall.

D. Where multiple supply tanks are providing fuel to single destination, provide automatic valve on each return line controlled by pump control panel, configured to be normally closed. Return valve on selected supply tank shall open upon call for fuel from that tank, assuring that any return/overflow fuel returns to its originating tank.

2.5 SUBMERSIBLE FUEL PUMPS

A. Basis of Design: Red Jacket Standard Series; Franklin Fueling FE Petro.

B. General: Submersible pumps for handling low viscosity, volatile solvents from underground storage tanks which require explosion-proof pumping equipment.

C. Description:

1. Pump shall be of submersible centrifugal type which installs through standard 100 or 150 mm threaded tank opening. Size shall vary, depending upon required flow rates and head loss of given piping system. See equipment schedule on Drawings for additional characteristics.

D. Mechanical Features:

1. Pump:

a. Pump shall be two, three or five stages, depending upon required flow rate, and shall be self-lubricating and easily removed from storage tank without disconnecting discharge piping.

b. Pump and motor assembly shall be readily separable from pump column pipe to allow for simple field replacement of pump and motor.

2. Impellers and Diffusers:

a. Impellers shall be either splined or keyed to pump shaft to provide positive, non-slip rotation.

b. Diffusers shall be tightly secured to lower motor bearing housing to prevent rotation.

3. Pump Intake Inlet:

a. Pump intake inlet shall be horizontal to prevent drawing sediment from tank bottom into pump inlet.

4. Manifold Head Assembly:

a. Manifold assembly shall be completely sealed against product leakage into ground and exterior water leakage into storage tank.

b. Discharge outlet shall be standard DN50 on models that install through DN100 tank openings, and DN75 on models which install through DN150 openings.

c. Head shall have built-in air eliminator, line check valve, pressure relief valve and shall contain built-in siphon primer when required.

5. The Siphon System:

UNDERGROUND FUEL STORAGE TANKS AND DISTRIBUTION SECTION 335617 - 12

a. Capable of drawing 625 mm of mercury vacuum through venturi. Siphon shall incorporate siphon check valve to maintain siphon action after pump has been turned off.

E. Electrical Features:

1. 100 mm size: Motor shall be single phase, permanent split phase capacitance type, continuous duty, rated explosion-proof in Class 1, Group D, flammable solvents.

Hermetically seal motor windings against leakage of product or moisture, and provide thermal overload device with automatic reset built into motor windings for motor cut-off when motor temperature reaches level which may cause damage to motor.

2. 150 mm size: Motors shall be single or 3 phase. Single-phase motors shall be capacitor run. All horsepower motors shall be explosion-proof rated for use in Class 1, Group D, flammable solvents. Hermetically seal motor windings to protect against leakage of product or moisture into motor, and provide thermal overload device with automatic reset built into motor for cut-off when motor temperature reached level which may cause motor damage. Single-phase models shall be supplied with motor control box that provides proper capacitors, relays and overload protection.

3. Connections:

a. Motor shall have quick-disconnect type male/female connector, readily separable for servicing without cutting or splicing of conducting wires.

b. Wiring connections to motor, including capacitor, shall be disconnected by quick-disconnect. Reconnecting motor to column pipe shall use alignment dowel pin for positive realignment of electrical male/female connector.

F. Construction:

1. Accessibility:

a. Components shall be designed and assembled to facilitate disassembly and servicing from above without disrupting discharge piping.

2. Assembly Order:

a. Assemble pump with pump inlet and impellers at bottom for maximum liquid draw. Mount motor above pump inlet so that motor is both cooled and lubricated by liquid flow past motor.

3. Construction for Pumps with l00 mm Tank Opening:

a. Packer/Manifold Head: Cast Iron.

b. “O-Ring” Elastomers: Buna-N.

c. Diaphragms: Viton.

d. Check Valve Seat: Aluminum.

e. Column Pipe: Steel Pipe.

f. Conduit Pipe: Aluminum.

g. Discharge Head: Cast Iron.

h. Pump Motor:

1) Outer Shell: Aluminum.

2) Stator: Stainless Steel.

3) Rotor shaft: Stainless Steel.

4) Impellers and Diffusers: Celcon Acetal copolymer.

5) Motor Bearings: Carbon.

4. Construction for Pumps with150 mm Tank Opening:

UNDERGROUND FUEL STORAGE TANKS AND DISTRIBUTION SECTION 335617 - 13

a. Packer Head: Cast Aluminum.

b. Manifold: Cast Iron.

c. “O-Ring” Elastomers: Buna-N or Viton.

d. Column Pipe: Steel.

e. Conduit Pipe: Steel.

f. Discharge Head: Cast Iron.

g. Pump Motor:

1) Outer Shell: Stainless Steel.

2) Impellers: Cast Aluminum

3) Diffusers: Celcon Acetal copolymer or cast iron.

4) Motor Bearings: Carbon.

G. Performance: Actual flow rates shall be within 5 percent of published performance curves for each pump model.

H. Provide manufacturer’s standard control box for model and pump size selected when pump is not powered by fuel controller.

2.6 SUBMERSIBLE PUMP DUPLEX CONTROLLERS

A. Basis of Design: Simplex, Inc.; Phillips.

B. General: Provide PLC-based duplex pump controllers. Controller shall receive level signals via

4-20 mA signals for leak and level monitoring panel. Utilizing these signals, the controller

(when receiving call for fuel from day tanks, dead-man switch for fire pump tank, or boilers) shall:

1. Open inlet solenoid valve on device calling for fuel.

2. Open return line automatic valve on tank selected.

3. Activate lead submersible pump on main tank selected.

C. Control Panel Construction:

1. NEMA 1 or 3R rated wall-mounted box of 1.90 mm (14 gauge) steel with hinged access doors, and conduit entry areas as needed with terminal strips for connection to remote day tank level controllers.

2. Duplex pup controller for activation by level controller on remote day tank.

3. Fully labeled switches and indicator lamps or Touchscreen detailing system status and operating mode.

4. Provide dry alarm contacts and Modbus protocol for remote annunciation and building maintenance interface.

5. Pump motor starter, full voltage type, non-reversing, with overload relay and circuit breaker.

6. Power available indicator.

7. Pump running indicators.

8. Pump failure indicators.

9. Audible alarm horn with silence push-button.

10. Alarm reset push button.

11. Running time meter, each pump.

12. Control power transformer if voltage is other than 115 VAC, 1 phase, 60 Hz.

UNDERGROUND FUEL STORAGE TANKS AND DISTRIBUTION SECTION 335617 - 14

13. Power inlet to control cabinet shall be interlocked to door-mounted main disconnect switch, which is mechanically interlocked such that power shall be disconnected prior to opening enclosure.

14. Provide system with isolation-type control power transformer with fused primary.

Subdivide control power circuits into discrete fused branches such that critical circuits are isolated among each other and from non-critical circuits.

15. Provide one flow switch on outlet of each submersible pump or each pair of duplex submersible pumps. Use switches to sense for proper pump operation by control system.

Switches shall be bronze construction, shuttle/reed switch type, 2756 kPa rated.

D. Function – General:

1. Pump controller shall automatically select lead and lag pump on each underground storage tank based upon run-time log to allow equal run time for each pump. Upon requirement for fuel, “lead” pump shall be energized. If “lead” pump failure occurs, failure alarm shall be sent to Building Automation System (BAS) through level/leak detection controller and “lag” pump shall be energized; see Section 230905

“Instrumentation and Control for HVAC” for BAS. If “lag” pump failure occurs, failure alarm shall be sent to BAS through level/leak detection controller. When demand for fuel is satisfied, pump controller shall de-energize operating pump. Status condition for each pump shall be relayed to BAS through level/leak detection controller. Status categories shall include Pump Auto (available for operation), Pump Running, and Pump

Failure

2. If fuel level in underground fuel oil storage tank falls below low-low level (LLL), pump controller shall terminate pumping and send alarm signal to BAS. When fuel level in fuel oil storage tank has risen above reserve level, system shall switch back to “lead” storage tank.

3. If there are multiple supply tanks for main system, pump controller shall control pumps on each, and equalize run time where feasible. If first main has low fuel level, pump controller shall select next main tank with sufficient level.

4. Pump controller shall receive leak and level signals from all main tanks and all day tanks.

E. Function for Dedicated Pumps for PCC Generator Day Tank:

1. PCC generator day tank shall have dedicated stand-along pump controller that operates dedicated PCC fuel pumps. Mount at one of underground fuel storage tanks. This underground fuel oil tank shall have low-low level indicator set at fuel reserve required for PCC for non-PCC fuel controllers.

2. Pump controller shall operate in accordance with general function requirements above, except that this Pump Controller shall not report to BAS.

2.7 WALL-MOUNT REMOTE FUEL FILL PANELS

A. Basis of Design:

1. Fuel Fill Panels: Fairfield Industries, Model RFP-24 with one or two ports.

2. ISP Automation, Inc., Model WFB-SS1.

B. Pre-Fabricated Metal Panel:

1. Lockable access door.

2. Remote alarm panel signaling device.

3. Liquid tight conduit thru rear of panel.

UNDERGROUND FUEL STORAGE TANKS AND DISTRIBUTION SECTION 335617 - 15

4. 100-mm dry-break fill cap and adaptor. Provide one female adapter for each size of dry-break.

5. Fuel piping entry at rear of panel.

6. 15-mm steel pipe drain fitting at base of panel with rear outlet.

7. Maximum two piping ports per panel.]

2.8 FACTORY QUALITY CONTROL

A. Precision Testing:

1. Test leak detection performance of monitoring system using UL test procedure at factory prior to shipping to detect leaks in primary or secondary tank. Test shall be performed by qualified independent agency.

2. If tanks fail to pass either monitoring system test at factory, qualified personnel supplied by tank manufacturer shall repair all leaks in primary and secondary tanks. Tanks shall then be re-tested.

3. Hydrostatic Monitoring System shall conform to Environmental Protection Agency

(EPA) criteria associated with precision tank tests.

PART 3 - EXECUTION

3.1 GENERAL

A. Install tanks and piping, including appurtenances, manholes, and accessories as indicated on

Drawings.

1. Verify location of equipment conforms to requirements of Chapter 13 of the OBO

Mechanical Code.

2. Install wiring in conduit with long radius bends at all changes in direction. Comply with

Division 26 requirements for conduit.

3.2 FIBERGLASS/HDPE PIPING

A. See Division 31 Section on earth moving for trenching and backfilling of piping on the site.

The following pipe installation specific requirements also apply:

1. Use shortest practical route, minimize bends, and run all pipe in single trench from remote fuel fill points to storage tanks, from storage tanks to final fuel destination, and from storage tanks to vent risers. Pipes shall run parallel to tanks and dispensers. Avoid piping across tanks.

2. Typically, piping shall slope at least 1 cm for every 96 cm toward tank. Pipe shall be properly supported to prevent traps or sumps.

3. Piping shall be separated by distance of at least 102 to 152 mm. Trench wall shall be separated by at least six 152 mm. Follow manufacture specific instructions for distances between piping, walls, bottom of trench bed thickness, and backfill heights. In all cases, pipe shall be completely surrounded with select backfill of either sand or 3 to 19 mm diameter pea gravel

UNDERGROUND FUEL STORAGE TANKS AND DISTRIBUTION SECTION 335617 - 16

4. Compact backfill carefully over and around piping system. When using tamping equipment, take care to prevent vibration from driving small stones into pipe wall. Take care to remove frozen lumps from all backfill materials before backfilling.

5. Timing: Cover pipe as soon as possible after successful testing to eliminate chance of damage to pipe, floating of pipe due to flooding, or shifting of line due to cave-ins. If damage is suspected, retest lines.

6. Run piping outside buildings underground below frost line and carefully grade to drain toward fuel storage tanks.

7. Installation: Design containment fittings dimensionally such that they can be installed adjacent to each other and not require more distance between primary fittings than necessary in non-contained installations.

8. Preparation: Containment system shall be plain end by plan end when installing two piece clam fittings for FRP systems or electro fusion joints for UPP systems. Light sand or scarf bonding surfaces. No tools shall be required for installation to alter pipe diameter.

9. Pipe fittings shall be free from all defects including delaminations, indentations, pinholes, foreign inclusions, bubbles and resin-starved areas which, due to their nature, degree or extent, detrimentally affect strength and serviceability of pipe or fittings. Pipe and fittings shall be as uniform as commercially practicable in color, opacity, density and other physical properties.

10. Extend pipes up to grade from tanks for stick gauging and manual filling, and fit with watertight, lock-type, hinged cap. Provide pad lock and two keys through Contracting

Officer/COR to Post's Security Officer.

11. Run tank vent pipe up from grade for at least 3.7 m and 1.6 m from building openings, and terminate with return bend, bronze insect screen or vandal proof weather cap.

Minimum size of vent piping shall be DN50.

12. Underground piping shall have secondary containment test ports at all low points in piping system and at transition sump when entering building.

3.3 STEEL PIPING

A. Fuel supply piping shall extend inside tanks to within 102 mm of tank bottom. Install horizontal swing check valve on each fuel supply pipe at tanks in access manhole.

B. Install steel piping from fuel fill panel to transition sump, and within buildings from transition sump to equipment within buildings.

C. Fuel oil suction piping to equipment shall not be smaller than DN20, but may be reduced to size of tapping in apparatus as close as possible to apparatus. Fuel return piping shall be same size as fuel supply piping.

D. Install piping with ground joint unions near each piece of apparatus to facilitate disconnecting and similar activity. Run piping inside buildings as indicated on Drawings or as directed by

Contracting Officer/COR. All pipes shall be free from vibration. Ream ends of pipes out before they are screwed into fittings. At screwed joints, apply suitable lubricant to male threads only.

3.4 FILL PANEL INSTALLATION

UNDERGROUND FUEL STORAGE TANKS AND DISTRIBUTION SECTION 335617 - 17

A. Coordinate construction of perimeter walls for locations of alarm conduit, fills supply pipe discharge, and drain line. Locate fill pipe connection maximum of 1 meter above exterior grade where fueling vehicle will be parked.

B. Mount remote alarm panel in remote fill-point secure compartment.

3.5 TRANSITION SUMPS

A. Install transition sumps on secure side of fill panels where steel piping enters ground and transitions to double wall piping, and install at entrances to buildings where lowest floor of building is at grade. Use entry fittings where piping leaves transition sump underground.

3.6 INITIAL FUEL OIL SUPPLY

A. Contractor shall initially fill each fuel storage tank with fuel to full capacity. Contractor shall supply fuel required for testing and operating equipment as required until fuel system is turned over to Government, at which time full tank of fuel shall be present in storage tank.

3.7 FIELD QUALITY CONTROL

A. Hydraulically field-test all steel piping to 150 percent of maximum anticipated pressure of system, or pneumatically field-test to 110 percent of maximum of anticipated pressure of system, but not less than 35-kPa gage at highest point of system. Maintain test for at least 10 minutes, or for as long as necessary to visually inspect all joints and connections on piping.

B. Pressure test both primary and containment piping systems in accordance with Piping

Manufacturer’s instructions. During testing, care shall be taken to avoid sudden pressure surges or "water hammer" since pressures produced can exceed, many times over, rating of pipe and fittings.

1. Inspection: Prior to testing, containment piping system installation shall be completely accessible for visual inspection of primary piping system. All primary fittings, joins and pipe lengths shall be visible during testing. System installation shall be inspected and approved by piping supplier or its certified contractor.

C. After installation and prior to backfilling, pressure test tank to demonstrate tightness at 35-kPa pressure. Following test, tamp backfill material thoroughly in courses of 300 mm with care exercised to avoid damage to tank. Perform backfill in accordance with directions from manufacturer in installation manual. No foreign material (e.g., broken bricks, cinder blocks) are permitted in backfill. Screen native soil in excess of DN25 from backfill material to prevent damage to tanks during backfill. Backfill shall not contain large quantities of ash and cinders.

1. Inspection: Prior to testing, storage tank system installation shall be inspected and approved by storage tank system supplier or its certified contractor.

D. Containment system shall be able to be tested, when installed and at later times, in accordance with local regulations and EPA requirements. No metallic components shall be used to maintain the integrity of the system.

UNDERGROUND FUEL STORAGE TANKS AND DISTRIBUTION SECTION 335617 - 18

3.8 START-UP SERVICE

A. Engage manufacturer’s factory certified technician to perform start-up service. Start-up service shall be provided for Fuel Oil System (including liquid level controls, leak monitoring controls, and fuel pump controls). Notify Contracting Officer/COR 14 days in advance of performing startup field testing.

1. Inspect field-assembled components, equipment installation, piping, and electrical connections for proper assemblies, installations, and connection.

2. Complete installation and perform start-up check according to manufacturer’s written instructions.

3. Verify that installation complies with Construction Documents.

3.9 DEMONSTRATION

A. General:

1. Training shall be performed at project site. Schedule training with Contracting

Officer/COR with at least fourteen days advance notice.

2. Train Government maintenance personnel on procedures and schedules for starting and stopping, operating, troubleshooting, servicing, and maintaining equipment and schedules.

3. Review data in manufacturer supplied maintenance manuals, and site-specific operations and maintenance plan, B. Fuel Oil System:

1. Minimum of eight hours on-site training, provided by supplier of fuel oil system controls, for operators and managers of fuel storage system.

a. Review system monitoring and controls.

b. Review content of Storage Tank Management Plan.

c. Review tank filling procedures, including spill prevention and control plan.

END OF SECTION 335617