SECTION FIBERGLASS REINFORCED PLASTIC (FRP) ENCLOSURE

Transcription

1 SECTION FIBERGLASS REINFORCED PLASTIC (FRP) ENCLOSURE PART 1 - GENERAL 1.01 SUMMARY A. This section covers materials and accessories for provision of a pre-engineered fiberglass reinforced plastic (FRP) enclosure. B. Related work: 1. Division 3 - Concrete 2. Division 16 - Electrical 1.02 SUBMITTALS A. Submit as specified in Section B. Submit manufacturer's catalog data and drawings showing materials of construction, principal dimensions, and component parts. Include data sheets for all accessories. C. Submit installation instructions and drawings showing layout and anchorage of enclosure and accessories. PART 2 - PRODUCTS 2.01 ENCLOSURE A. Acceptable Manufacturers: Subject to compliance with requirements, provide FRP enclosure as manufactured by one of the following: 1. Jacobs Manufacturing. 2. Engineered Fiberglass Composites, Inc. 3. Kenco Plastic Company, Inc. 4. Warminster Fiberglass, Inc. 5. Approved equal. B. Dimensions: Minimum 12' W x 12' D x 8' H. C. Design and Materials of Construction: 1. The enclosure shall be designed for outdoor installation in areas of corrosive chemicals and high humidity, and be capable of withstanding winds of 130 mph and roof loads of 30 psf. 2. Enclosure shall be constructed of one-piece molded fiberglass reinforced polyester resin, molded by hand lamination process. a. Provide with beige gel coat exterior for attractiveness, weatherability and low maintenance. b. Construct with fiberglass ribs on 16-inch centers in wall and roof sections. c. Insulate with I-inch thick rigid polyisocyanurate insulation encapsulated between walls and top, and a protective fiberglass reinforced polyester resin laminate on the interior surfaces. d. Provide a base flange on all wall sections for anchoring building to concrete foundation. e. Provide thickened/reinforced wall sections for mounting of mechanical and electrical accessories as indicated on the drawings. f. Provide FRP weather hoods on wall penetrations for air intake and exhaust devices. g. Provide 3' x 6'-8" door with clear plastic, scratch resistant window, continuous stainless steel hinge and brushed chrome commercial grade lockset. Locate as indicated on the drawings.

2 h. Paint interior with a white surface coat. 3. All gel coats and surface coatings shall be a chemical resistant neopentyl glycol based polyester resin. 4. Laminated resin shall be a rigid orthophthalic polyester suitable for use in corrosive atmospheric conditions. 5. Fiberglass reinforcement of the outer laminate shall consist of 3-plies of oz./ft. chopped strand mat. The inner laminate shall consist of 2-plies of oz./ft. chopped strand mat ACCESSORIES A. Equip enclosure with the following heating and ventilation equipment. 1. Thermostatically controlled, wall-mount, fan-forced heater, 2000 watt, I-phase, 208 volt. Equal to Berko SRA Series. 2. Thermostatically controlled, corrosion-resistant, shutter-mounted exhaust fan with stainless steel bird screen. Minimum 250 cfm at static pressure of 0.125" wg. Equal to Grainger Catalog No. 1 BLH6 3. Intake shutter with stainless steel insect screen. Minimum square feet of free area. Equal to Grainger Catalog No. 5C210. B. Equip enclosure with the following electrical accessories. 1. Indoor, surface-mount, 100 amp, I-phase, volt, 3-wire, 12-space main circuit breaker load center, with ground bar, 60 amp main breaker, and branch breakers as indicated. Equal to Square D Catalog No. Q0112M Two (2) strip and coffin type florescent light fixtures with fiberglass enclosure and gasketed lens cover. Equal to Lithonia DMW 232 with T8 lamps and acrylic lens. 3. Exterior switches for light and fan. 4. One ground-faulted duplex receptacle. 5. Two ground-faulted simplex receptacles with orange covers. Identify remote power source per Section Part Additional circuits as indicated or required. C. Factory install all mechanical and electrical accessories at locations indicated on the drawings. D. Wire all electrical accessories in corrosion resistant conduits. PART 3 - EXECUTION 3.01 INSTALLATION A. Install pre-engineered fiberglass reinforced polyester resin enclosure as indicated and in accordance with manufacturer's written instructions. B. Anchor to concrete foundation with stainless steel anchor bolts of size recommended by enclosure manufacturer. Use adhesive type anchors. Expansion type anchors are not acceptable. C. Make all electrical and control connections. D. Verify that all electrical accessories are functioning properly. END OF SECTION

3 SECTION ULTRASONIC FLOW METER PART 1 - GENERAL 1.01 SUMMARY A. Section includes equipment, material and service requirements for furnishing, installing, and acceptance testing ultrasonic flow meter and related appurtenances. The principal items shall include, but not be limited to the following: 1. Ultrasonic flow meter. 2. Acoustic sensor. B. Related work: 1. Division 16 - Electrical C. References: 1. American Society of Testing and Materials (ASTM): 1.02 SUBMITTALS a. ASTM D638 - Test Method for Tensile Properties of Plastics. b. ASTM D790 - Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials. A. Submit as specified in Section B. Furnish manufacturer's catalog data and illustrations showing principal dimensions, parts and materials. Include technical description and specifications. C. Furnish installation instructions and drawings showing layout and anchorage of equipment and appurtenances. D. Furnish operating instructions and service manuals for the specific equipment provided. PART 2 - PRODUCTS 2.01 ULTRASONIC FLOW METER A. Acceptable Manufacturers: Subject to compliance with requirements, provide ultrasonic flow metering equipment as manufactured by one of the following: 1. Siemens Milltronics OCM Ill. 2. Teledyn ISCO Approved equal. B. General: 1. Provide ultrasonic flow meter to measure flow in parshall flume as indicated. 2. Flow meter shall be capable of indicating and totalizing. 3. Flow meter shall have microprocessor-based electronics, a front panel menu-driven keyboard and shall produce an isolated 4-20 Ma DC signal proportional to flow over a measurement range of 0 to 0.33 mgd. 4. Flow meter to be self-compensating for ambient temperature conditions.

4 5. Provide relay outputs as required for alarm conditions, sampling or pulsing external devices. 6. Unit shall be capable of simulating flowllevel without any external devices for verifying outputs and calibrations. 7. Unit shall be capable of re-calibration in the field by the menu-driven keyboard. C. Acoustic Sensor: 1. Provide permanently mounted acoustic sensor at the measuring site, positioned according to manufacturer's approved method. 2. Sensor shall transmit and receive an acoustic signal to accurately measure fluid depth at the monitoring site. 3. Sensor to have built-in temperature compensation to maintain accuracy. 4. Capable of indefinite submergence up to 30 feet without degradation. 5. Capable of functioning over an ambient temperature range of -20" F to 160" F. 6. Designed and rated for operation in hazardous environments such as sanitary sewers. 7. Equip with shielded transmission cable of adequate length for the application without splices. 8. Provide sensor mounting bracket suitable for installation. Bracket and all hardware shall be 300 series stainless steel. D. Transmitter: Provide transmitter with all necessary circuitry to utilize the signal from the acoustic sensor and produce an accurate 4-20 madc (depthlflow) signal. Equip with an LCD indicator to display flow rate and flow total and their respective flow units and multipliers. Display shall also indicate fault and alarm conditions. 3. Transmitter shall produce relay output connections for external alarms and devices as required. 4. Provide NEMA 12 indoor housing suitable for wall mounting as indicated. 5. Capable of functioning over an ambient temperature range of 32" F to 150' F indoors. E. Operating Parameters: 1. Accuracy of unit shall be unaffected by temperature changes within the specified ambient temperature range. 2. Flow sampling shall be a minimum of 15 samples per second and the unit able to operate with as few as 2% of the samples taken successfully. 3. Prolonged loss of acoustic signal shall be indicated by a flashing status indication on the front display panel. 4. Flow signal shall be an isolated 4-20 madc signal operating into a maximum of 1000 ohms. a. Accuracy shall be % of target distance or ", whichever is greater. b. Repeatability shall be within 2 0.2%. 5. Unit shall operate on 120 VAC electric service. 6. All user wiring connections shall be made via well-marked terminal blocks. PART 3 - EXECUTION 3.01 INSTALLATION A. Acoustic Sensor: 1. Install acoustic sensor at existing Parshall flume (3-inch throat width) as recommended by the flow meter manufacturer.

5 B. Transmitter: 1. Install transmitter in existing electrical control building as recommended by the manufacturer. 2. Make all electrical and control connections. C. Provide all necessary materials and components as required for a complete installation FIELD TESTING A. Manufacturer's Services: 1. Provide equipment manufacturer's services at the job site to checkinstallation, to perform initial start-up and operational test, and to instruct Owner's personnel in the proper operation and maintenance of the equipment. 2. Services to be performed by an authorized representative of the flow meter manufacturer. B. Operational Test: 1. Prior to acceptance, an operational test of the flow meter shall be performed to determine if the installed equipment meets the purpose and intent of the specifications. Operational test shall demonstrate that the equipment is not electrically, mechanically, structurally, or otherwise defective; is in safe and satisfactory operating condition; and conforms with the specified operating conditions. 2. Make all necessary equipment adjustments and corrective work indicated by tests. Repeat testing as necessary. 3. Submit two copies of written report stating operations performed and results obtained. END OF SECTION

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