221619 Compressed air Equipment for Purchasing.docx
DOCX document 26 KB Posted
- Solicitation number
- RFQ - 15A - 11120900000000000536
- Issued by
- Knox County, Lisbon CDP, Maine
About this file
This is a Scope of Work document for compressed air equipment procurement and installation services for the State of Maine, Bureau of General Services, located at Building No. 7230 in Limestone, Maine (Project #1785). The project involves the supply and installation of a complete compressed air system including air dryers, filters, flow control valves, condensate treatment equipment, a 2,500-gallon compressed air receiver tank, breathing air filtration systems, and carbon monoxide monitoring equipment. The compressed air piping within the compressor room extends to a point six inches outside the compressor room wall at the manual emergency shut-off valve. The equipment supplier must provide 16 hours of onsite start-up and installation support coordinating with mechanical and electrical contractors, one day of operator training, air quality certification testing per OSHA standards, and assistance with an Efficiency Maine Custom Compressed Air Application submission. All bidders must be capable of servicing the equipment they sell and providing comprehensive technical support throughout installation and initial operation.
Bidder qualifications require certification to test and certify breathing air quality per OSHA 29 CFR 1910.134D and CAGI G-7.1-1989 Grade "E" standards, with a certificate of air quality to be provided before personnel begin using the breathing air system. The air compressors (two Ingersoll Rand Model R110N 150HP units) are provided separately under a different contract and do not fall under this section's scope. The document specifies detailed technical requirements for each component, including design conditions for the refrigerated air dryer (750 SCFM capacity with 36-48°F pressure dew point), filter specifications (0.1 micron and 0.01 micron coalescing filters rated at 800 SCFM), and flow control valve parameters (150-2600 SCFM capacity with 1 PSI pressure accuracy). The document excludes pricing information, contract term details, and bidding timeline specifics, as this section focuses exclusively on technical specifications and installation requirements.
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| Solicitation_terms.doc | DOC document | |
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| CA Binder Equipment Purchasing.pdf |
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Text version
SECTION 22 16 19
COMPRESSED AIR EQUIPMENT
PART 1 GENERAL
| 1.1 | SECTION INCLUDES |
| A. | Supply and assist with the installation of all specified equipment and all compressed air piping in the compressor room to a point 6” outside the compressor room wall at the manual emergency shut-off valve. Coordinate with pipe installer, troubleshoot, and provide onsite instruction to the Owner in the care and operation of the equipment and system. |
| 1.2 | SECTION EXCLUDES |
| A. | Air compressors will be provided by the owner. |
| 1.3 | RELATED REQUIREMENTS |
| A. | Section 00 72 13 General Conditions |
| 1.4 | REFERENCE STANDARDS |
| A. | 29 CFR 1926 - U.S. Occupational Safety and Health Standards; current edition. |
| 1.5 | SUBMITTALS |
| A. | See General Conditions for shop drawing and submittal procedures. |
| 1.6 | OWNERS MANUALS |
| A. | Provide a binder with all owner’s manuals and installation manuals. |
1.7 BIDDER QUALIFICATIONS
A. All bidders must be capable of servicing the equipment they sell and providing onsite equipment start-up support and operator training as follows:
1. All needed coordination and 16 hours onsite start-up and installation support. Assist mechanical contractor, electrical contractor, and Owner with all installation related questions and technical information. The first site visit shall be scheduled shortly after equipment delivery.
2. One day (8 hours) operator training.
3. Qualified to test and certify breathing air quality per OSHA 29CFR 1910.134D and CAGI G-7.1- 1989 Grade “E”. A certificate of air quality must be provided to the owner after system start up and before any personnel begin using the man air system.
4. Supplier must support the Owner with preparation of an Efficiency Maine, Custom Compressed Air Application for the air dryer, air receiver tank, and flow control valve.
PART 2 PRODUCTS
2.1 AIR COMPRESSORS
A. AC-1: New, Ingersoll Rand Model R110N - 150HP Single Stage Nirvana Rotary Screw Variable Speed Drive Air Compressor, (two) purchased under a separate contract. Coordinate delivery to site, and install in the manner indicated on the drawings.
2.2 AIR DRYERS
A. AD-1: Provide air dryer and install in the manner indicated on the drawings.
1. The compressed air dryer shall be a cycling, refrigerated, air-cooled type to dehumidify air at the following design conditions:
| a. | Inlet air temperature: 100 °F. |
| b. | Inlet air pressure: 100 PSIG |
| c. | Max. ambient temperature: 100 °F. |
| 2. | The dryer shall be designed to deliver 750 scfm compressed air at above conditions with a pressure dew point temperature range of 36 °F to 48 °F and reheat the air temperature 15-20 °F. below the inlet air temperature. Maximum pressure drop shall be 5 PSI or less. |
| 3. | Air System Design. The air system shall be modular in construction and shall include: |
| a. | Individual air to air heat exchanger, individual air to chilled mass heat exchanger, individual moisture separator, and automatic adjustable drains. |
| b. | Each of above components shall be separate, serviceable and piped to the assembly with flanges, unions, pipe nipples and fittings to the complete air system. |
| 4. | Heat Exchanger Design |
| a. | Hot incoming air shall be precooled by reheating the outgoing colder air in the air to air heat exchanger. (Precooler/reheater) |
| b. | Air coming out of the air to air heat exchanger shall be cooled to the dew point temperature with chilled mass in the air to chilled mass heat exchanger. |
| 5. | Separator Design. The separator shall be centrifugal type designed to remove 99% of all liquids and solid particle sizes 10 micron and larger. |
| 6. | Automatic adjustable drain valves shall be provided. Drains shall be installed with particle strainers and condensate line shut-off valves. A solid state timer controls a solenoid that opens and closes the drain valve. The automatic drain can be programmed to operate at 1 to 60 minute intervals. |
| 7. | Refrigerant System Design. The refrigerant system shall be completely assembled and factory tested. The air dryer shall be completely wired and piped in. System to be factory tested and shipped with a full refrigerant change and oil. |
| 8. | All the air, chilled mass, and refrigeration system surfaces cooled below the ambient temperature are fully insulated. |
| 9. | Control panel shall be constructed to NEMA-1 standards. Electrical controls include internal motor overload protection, control transformer with primary and secondary fuses, on/off switch, cycling thermostats, and refrigerant high/low pressure control. Pilot lights shall be installed to monitor power on and high temperature. |
| 10. | Instrument panel shall include a on/off power switch, refrigerant suction pressure gage and monitor the following functions : |
| a. | Inlet air temperature (°F or °C) |
| b. | Refrigerant suction temperature (°F or °C) |
| c. | Alarm Indicator |
| d. | Compressor running indicator |
| e. | Service due indicator |
| f. | Programmable auto-drain |
| g. | Refrigerant suction pressure gage shall have capillary tubes with isolation valves and vibration isolators for easy servicing. |
| 11. | Dryer should have standard cabinet style enclosure with ambient air filter. The cabinet is manufactured of heavy duty sheet metal with a baked powder coat finish. Legs are provided for forklift clearance from all sides. |
| 12. | The equipment vendor must work with the owner to submit a “Custom Compressed Air” application to Efficiency Maine. |
2.3 AIR FILTERS
| A. | F-1 Coalescing Filter Rated at 800 SCFM minimum at 100 PSIG. 0.1 Micron, 0.5 PPM oil carryover rating over entire flow range. 3 PSIG pressure drop max when dirty, 150 PSIG standard operating pressure, differential pressure gage, automatic float drain. aluminum housing construction, in/out connection - 3 Inch NPT or approved equal. |
| B. | F-2 Coalescing Filter Rated at 800 SCFM minimum at 100 PSIG, .01 Micron, 0.01 PPM oil carryover rating over entire flow range 3 PSIG Pressure Drop max when dirty, Differential Pressure Gage and Automatic Float Drain, 150 PSIG operating pressure, aluminum housing construction, in/out connection - 3 Inch NPT or approved equal. |
2.4 FLOW CONTROL VALVE
A. FC-1, Flow Control Valve: Automated valve package, completely assembled. Designed specifically for flow/pressure control in an industrial compressed air system. 1Psig pressure accuracy over entire flow range of 150-2600SCFM. 200Psig max pressure. Inlet & outlet; 3 or 4” ANSI steel flanges, 150# rating. Welded steel pipe with powder coated paint exterior. Threaded pipe is not acceptable Manual 3 valve bypass to allow for control valve servicing. Mounted and wired control panel, digital keypad and NEMA 12 enclosure.
2.5 CONDENSATE TREATMENT, OIL/WATER SEPARATOR
A. OS-1, Oil & Water Separator, Rated at 1600.0 SCFM (size allows for addition of future compressor), removes all compressor lubricants, including polyglycol emulsions, easy change disposable filter cartridge.
2.6 TANK, COMPRESSED AIR RECIEVER
A. TK-1, Vertical Receiver Tank, Vertical Receiver Tank, 2500 Gallon minimum 150 PSIG Working Pressure, ASME Coded Pressure Vessel, NPT or 3” minimum flanged air connections, Include safety valve, gage & manual drain, primer paint coating, gage & drain connections. Provide liquid filled pressure gage.
2.7 MAN AIR (BREATHING AIR)
Provide the breathing air respiratory protectors, and associated piping from unit to the air mains (coordinate with piping contractor).
A . MA-1 Point of Use Breathing Air Filters Two stage filtration, first filter shall be .01 micron coalescing, second filter shall be activated carbon to remove taste and odor. 1” NPT connections, powder coated aluminum housings, automatic drain valves. Each filter shall be rated for 53CFM minimum at 100Psig.
B. CO-1 Carbon Monoxide Monitoring System Provide the breathing air respiratory central carbon monoxide monitoring system to be placed in compressor room with remote strobe: enclosure NEMA 12 rated, accuracy +/- 5% of reading, measuring range- CO Range 0 - 200 ppm increments.
2.8 COMPRESSED AIR PIPING AND FITTINGS (IN COMPRESSOR ROOM)
Shall be one of the following and will be supplied and installed by the owner (substitution of plastic or other non-metallic piping or tubing is not allowed):
A. Aluminum (preferred)
1. Ductile aluminum alloy, outer coating of blue epoxy paint, smooth bore, non corrosive system specifically designed for compressed air. Fittings: mechanical, polyamide or brass, compliant with ANSI B31.1, temperature range: -4° to 170° F, minimum working Pressure: 188 PSI at 122° F, non corrosive system specifically designed for the compressed air piping used and by the same manufacturer.
B. Copper
1. Type K copper pipe grooved fitting coupling gaskets shall be Victaulic, Gustin Bacon, or equal. Gasket having resistance to compressed air having oil. Paint piping blue or provide pipe markers every 10 feet.
2. 9 COMPRESSED AIR ACCESSORIES (IN COMPRESSOR ROOM)
A. Ball valves (supplied and installed by the owner)
1. Full port, compatible with piping system used, brass or stainless steel, or by piping manufacturer, or type 316 stainless steel stems and balls, reinforced Teflon seats and seals, blowout proof stems and adjustable stem gland. Rated for 400# WOG and 350 °F minimum.
B. Hangers and supports (supplied and installed by the owner)
| 1. | All hangers and supports shall be especially manufactured for that purpose, preferably by the piping manufacturer, and shall be the design and capacity required for the location of use. |
| 2. | Use clamps to connect hangers and supports to structure as drilling and grinding is not allowed due to lead paint. |
| 3. | Keep hangers as short as possible. Provide seismic restraints bracing in accordance with the International Building Code. Piping suspended by individual hangers 12 inches or less in length, need not be braced. |
PART 3 EXECUTION
| 3.1 | SCOPE |
| A. | Install in accordance with manufacturer's recommendations. |
| B. | Install large equipment on 4-inch housekeeping pads (supplied and installed by the owner). |
| C. | Provide for connection to electrical service. Electrical service to the compressors shall be 480V furnished from panel PDP-S1 located in the compressor room. Electrical feeds to the dryers, condensate pumps, instrumentation panels and other equipment requiring 120V or 208V single or three-phase shall be fed from panel PPS1A located in the compressor room. All electrical breakers, conduits, electrical wiring, shall be furnished and installed by others. |
D. All control wiring and associated conduits shall be furnished and installed by others. The equipment supplier is to provide installation support.
| D. | Align air compressor and dryers on concrete foundations. Level, grout, and bolt in place (supplied and installed by the owner). |
| E. | Provide vibration isolation between unit and structural support (supplied and installed by the owner). |
| F. | Obtain a copy of the overall building piping plan (bid separately) for reference. |
3.2 PLACEMENT OF EQUIPMENT
A. Equipment should be spaced to allow easy servicing and arranged to minimize disassembly of other equipment when removal / replacement of equipment is needed. Install equipment toward the back of room and conserve space for installation of future equipment.
B. Placement of mechanical equipment in the compressor room shall be in compliance with the clearances in front of and around electrical equipment and panels as required by the National Electrical Code.
END OF SECTION
| Building No. 7230 | COMPRESSED AIR EQUIPMENT |
| Compressed Air System, Limestone, Maine | 22 16 19 - 1 |
Bureau of General Services Project #1785
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