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L 2. The following continuous monitoring con- ditions shall be compatible with the cavity between the inner and outer tanks: • Vented to atmosphere • Vacuum — 5 psi maximum • Positive air pressure (5 psi maximum) • External hydrostatic pressure — 7 foot maximum groundwater head pressure over tank top. 3. Tanks 6' diameter and larger shall have an integrally mounted reservoir' installed on the tank for optional hydrostatic rrlonitoring. The reservoir shall be constructed of fiberglass reinforced plastic materials and warranted for 30 years against failure due to internal/exter- nal corrosion and, when properly installed, against structural failure (same as tank war- ranty). -Tanks 4' diameter DWT -6 Type II tanks do not include a fiber- glass reservoir. A 4' diameter riser pipa screwed into the 4' diameter annular space fitting,will serve as the resarvoPr. 4. Tank shall be designed with one 4" fitting that will access the tank bottom between the primary and secondary walls (annular space). 5. The double-wall tank monitor shall be capable of detecting a breach in the inner and/or outer tank under the following installed conditions: a. When the inner tank is empty. b. When the inner tank is partially or com- pletely full and the groundwater table is below the tank bottom. c. When the inner tank is partially or com- pletely full and the tank is partially or completely submerged in groundwater. 6. The leak detection performance of the monitoring system shall be tested and verified by a qualified independent consultant to detect leaks as small as 0.10 gallons per hour with a 99.9% probability of detection and less than a 1.3% probability of a false alarm. 7. All monitoring equipment, 'including FRP reservoirs and electronic controls, shall be U.L. listed or accepted.. 8. If hydrostatically monitored, any solution used in the tank annular space shall have U.L. approval for compatibility with the tank and be a contrasting color to the tank surface to facilitate visual inspection of the tank for leaks prior to burial. 2.02 Accessories A. Anchor Straps — Provide glass fiber - reinforced plastic anchor straps for each tank shown. Number and location of straps shall be as specified by manufacturer. Each strap shall be capable of withstanding a maximum load for each tank diameter as shown. 4'6— 4,200 lbs. Go —18,000 lbs. 8'0 — 25,000 lbs. 10'6 — 32,000 lbs. Straps shall be standard as supplied by the tank manufacturer. B. Certification Plate — Underwriters Laboratory label shall be per- manently affixed to each tank. 26 F1 L-A C. Flanged Manways All control panels include: 1. The standard manway is 22" 1D. The 30" • Alarm lights for each circuit and 36" la manways are optional. One 22" • Alarm test button manway is provided with each tank. • Warning bell 2. All manways will be furnished complete • Transmission contacts for phone dialer with U.L. fisted gaskets, bolts and covers. (not provided by Fluid Containment) 3. Location — see standard tank drawings. •,panel housing materials: fiberglass 4. For tanks 1,000 gallon capacity or less, the . Two spare light bulbs steel manway cover shall have four 4" NPT . Wall mounting hardware steel fittings. For tanks of 2,500 gallon (6' • Alarm bell silence switch diameter) and 6,000 gallon (8' diameter) • ALPHA numeric display (tank inventory capacity, the steel manway cover shall have gauge panel only). five 4" NPT steel fittings welded in place. All . Fluid Containment electronics do not other tanks will have the three 4" fittings weld- require shielded cable - ed in place. • Tank gauge resolution ± 1132" The 22" manway cover fittings are on an 8" Note: All wiring materials are provided by radius from the center of the cover to the cen- the contractor. Wiring is required from the ter line of the fitting. The 30" manway cover fit- power source to the control panel and from tings are on a 12" radius; the 36" manway the control panel to the probe and sensor cover fittings are on a 15" radius. assemblies. 5. Manway risers 48" in diameter and 42" 4. Switch Panel (Models SP -1 and SP -4 high will be supplied to provide access to the for use with 550011 C4 and S13001 4C4 manway lid. A 24" x 24" galvanized street box panels only) with a cover must be provided by contractor The switch panel is preassembled and for at grade installation. ready to wire. All electrical components are 6. Fiberglass manway extension tubes 24" U.L. listed NEMA 4 X. The electrical box is long will be provided for the manways as out- non-metallic. lined in Section 3 above. D. FillTubes Features Model SPA Model SP -4 Number at Fill tubes of appropriate design will be sup- monitoring circuits 2 B plied by contractor. Dimensions 8'12'H x 8'/2'Hx E. Hydrostatic Monitor Accessories 31/=11V x 4D 91/2VV x 4D 1. Brine Antifreeze 5. Tank Gauge Probe (Model TGMP) Brine solution Designation: BAS -30 The tank gauge probe is to be preassem- Chemical Composition: 30%+calcium chloride, 1 % to 3% potassi- bled and ready to wire to the TGMS-02 con - um chloride,/% to 2% sodium chloride, Balance water Visual Appearance: Green in color, Cdorfess fluid trol panel. Probe lengths should be provided Specific Gravity @ 60°F: 1.272.1.317 to match proper tank diameters. Factory installed on tanks 20,000 gallon and under. Bull: brine job - site installed on 25,000 gallon and 30,000 gallon tanks. F. Turbine Enclosures (Model TE Series) 2. Reservoir Sensor (Model RS10B & Model DF) The turbine enclosure is constructed of Dimensions: fiberglass reinforced plastic. The turbine Assembled Sensor, 2.38' dia. maximum x 1S'L 12'L maximum enclosure Is 42" or 48" in diameter and Lead Cable PVC Riser Pipe Cap & Fining: 4" dia. must be capable of mounting to the 42" or Flexible Condug Switching: 318" dia. x 18'L 48" diameter secondary containment collar. Contacts RS10E: Titanium probes Buna-N float switch Turbine enclosures are a minimum of 2' in DF: (2) Buna-N float switches length and are available in one -foot incre- 3. Electronic Control Panels ments to a maximum of five feet: The control panel shall be constructed of U.L. listed, electronic components. The control panel power source is 120 volts A.C. (contrac- tor provided wiring). The tank gauge probe and sensor monitoring circuits are intrinsically safe circuits, i.e., the circuit is incapable of releasing sufficient electrical or thermal energy to cause ignition of specific hazardous materi- al under "normal" or "fault" operating condi- tions. Features Model Model Model sB0014C4 S80011C4 TGMS-02 (Hydrostatic iHydrostatic {Tank Inventory System only) system only( Gauge will Hydrostatic System Capability) Number of monitoring 4 1 8 (2 probes & 6 cimulls. sensor circuits) EledrIcA Weatherproof Weatherproof Indoor Components {NEMA4XI (NEMA4X) (NEMA 1) Rating Dimensions 10'Hxl4'Wx8'D 10'Hx14'Wx8-D 10"Hx8-Wx3-118"0 Total Power 02 amps 0.1 amps 0.1 amps Consumption 20 watts 10 watts 10 watts Monitoring 12 VNISA.C. 12 VaMs A.C. 11 Volts A.C. Circuit Power .003 amps .003 amps 0002 amps Inpul Power 120 VAC 120 VAC 120 VAC Model No. Length TE42-2 2' TE42-3 3' TE42-4 4' TE42-5 5' TE48-2 2' TE48-3 3' TE48.4 4' TE48-5 5' Cut lines for field trimming will be marked on the top 12 inches of the turbine enclo- sure in three inch increments. The turbine enclosure top is constructed of high-density polyethylene. The top diameter is 42 inches. The lid openings are available in various sizes: Model No. Top Lid Opening Diameter PT42-23 20.5 inches PT42-27 24,5 inches PT42-32 30.0 inches The turbine enclosure top includes a fric- tion -fit lid constructed of high-density poly- ethylene. r