MODIFICATION
36 -- Laundry Procurement for Mountain Home, TN
- Notice Date
- 11/25/2020 8:48:36 AM
- Notice Type
- Solicitation
- NAICS
- 333318
— Other Commercial and Service Industry Machinery Manufacturing
- Contracting Office
- NAC HIGH TECH CONTRACTING (36H797) HINES IL 60141 USA
- ZIP Code
- 60141
- Solicitation Number
- 36H79720R0008
- Response Due
- 12/28/2020 1:00:00 PM
- Archive Date
- 02/26/2021
- Point of Contact
- Monique T Lara, Contract Specialist
- E-Mail Address
-
Monique.Lara@va.gov
(Monique.Lara@va.gov)
- Awardee
- null
- Description
- The VA National Acquisition Center (NAC) intends to issue a Request for Proposals (RFP) for the VA Medical Center in Mountain Home, TN to interested sources to provide the following line items: ITEM # 1 WASTEWATER HEAT RECOVERY, WATER STORAGE/PUMPING/REUSE/WATER SOFTNENING SYSTEM: Furnish and install new, one (1) laundry ancillary support water storage/pumping system equipment shall be in accordance with performance specifications. ITEM # 2 Energy Monitoring System: Furnish and install new, one (1) Energy monitoring system which shall be in accordance with performance specifications. This equipment is to be installed at the Department of Veterans Affairs (VA) Medical Center located in Mountain Home, TN. NAICS code 333318 is applicable to this procurement. Request for Proposals shall be issued on or about October 15, 2020. Point of contact: Monique Lara at monique.lara@va.gov. TECHNICAL/PERFORMANCE SPECIFICATIONS ITEM # 1 Laundry Ancillary Support Waste Water Heat Recovery / Water Storage / Pumping / Reuse System and Water Softening System: Furnish and install all items and components necessary for the wastewater heat recovery/water storage/pumping/ reuse systems to perform according to design specifications. General: Wastewater Heat Recovery, Water Storage/Pumping/Reuse systems General: Furnish and install all items and components necessary for the: Wastewater heat recovery system The water storage/pumping system The water Re-use system Water Softening System Hour meters shall be installed on each system. The water systems shall be sized to be capable of supporting a wash/extractor system and other areas in the building. The laundry processes approximately 7,700 of linen per day. All proposed equipment will be based on water consumption of 2.6 gallons per pound of installed wash/extractor capacity. The water softening system shall be designed to support the laundry equipment and building i.e. water in break room, and other areas All tanks overflow and drains will be routed to the reuse pit on the first floor. A water reuse system is required. The installed equipment shall perform according to design specifications. Wastewater Heat Recovery: The waste water heat recovery system shall be capable of transferring heat to both the hot and tempered water to be used in the washroom and capable of a minimum energy recovery of 65 percent if the average fresh water temperature is between 45 and 60 degrees F, and 55 percent if above 60 degrees F. The wastewater heat recovery system shall be capable of meeting the following specifications: 1. Preheat the hot water make up to within 10 degrees F of actual wastewater temperature, and the tempered water to 100 degrees (nom.) when the system is operating at average flow conditions. In addition, a control thermostat is required to adjust the stored tempered water tank temperature as desired. See Water System Sizing Guide, Table I, for equipment sizing guidelines. 2. The heat reclaimer shall be constructed so that the fresh water shall contact only corrosion resistant materials, and the heat exchanger heat transfer surfaces themselves shall be of stainless steel construction. 3. System shall have an automatic cleaning cycle as well as the capability of chemical cleaning through re-circulation. Fully automatic cleaning controls shall be included as standard equipment. During end of day shutdown the PLC shall automatically initiate a re-circulation cleaning cycle of hot water through the heat exchanger for at least 30 minutes using a proper chemical cleaning solution. The contractor shall supply all chemicals for one (1) months use. All valve operation and cleaning chemical addition shall be automatic. 4. System shall have easy access for full inspection and maintenance of all waste and fresh water heat transfer surfaces. 5. All wastewater shall be screened for automatic removal and discharge of suspended solids to a minimum of 235 microns before entering the heat reclaimer. Cameras shall be included for easy visual inspection of the screening unit from floor level without disassembly. 6. System shall have automatic controls to ensure sufficient water is supplied to the hot and tempered water storage tanks to maintain normal washroom operations. Fresh and wastewater flow rates shall be controlled with automatic modulating valves that will maximize heat recovery according to the variable usage of waters during normal wash production. The automatic modulating control valves shall match the washer water demands to the available wastewater in the pit to achieve optimum heat recovery at any plant production level. A single system on/off switch shall be the only control needed to start the system at any water flow from 25 to 100% of design flows. Level controls shall evaluate plant water demands, available wastewater in the wastewater storage pit, and select the most advantageous flow rates to achieve the optimum heat recovery. System shall have a Control panel with a 12 touch screen display for system operation and monitoring. The panel shall be a NEMA 12 enclosure. Display screens shall be provided for complete operational status and control of the wastewater heat recovery, water storage/pumping, and water reuse systems. The following information shall be provided, but not limited to, on the touch screen display: Water temperatures, water flow rates, pit & tank levels, pump operating status, valve position, indicating status light, and system alarms with acknowledgement. Temperature displays on the touch screen display shall indicate fresh water temperature in, preheated hot and tempered water temperatures out, and waste water temperatures before and after heat recovery. 8. The successful offeror guarantees: a. The offered system will meet performance specifications. b. The heat exchanger will not stop-up or plug when operated in accordance with the manufacturer's operating instructions. c. The heat exchanger will be free of defects in workmanship and material defects for a period of five years. B. Water Storage/Pumping System: The water storage/pumping system shall be capable of meeting the following specifications: The hot water storage tank shall have a storage capacity of ""D"" gallons/liters and the tempered water storage tank shall have a storage capacity of ""E"" gallons/liters. Material shall be of Type 304 stainless steel. If the fresh water has a normal chloride level of 40 mg/l or more, the tank materials shall be of Type 316L stainless steel. See Water System Sizing Guide, Table I, for Hot and Tempered Water Storage Tank Volumes. All pits shall be cleaned, repaired and sealed. Lines will be jet washed clean from pits to washer trenches and from pits discharge to sanitary sewer line. Transfer pumps will supplied for both pits. 3. The water storage tanks shall be insulated to prevent unnecessary heat loss. Insulation on all storage tanks shall be a minimum of 1-1/2 inches thick, 3 pound high density, semi-ridged duct board with factory installed vapor barrier facing and re-jacketed with a minimum .030 thick white PVC plastic. Water storage tanks shall have sight tubes installed with proper bracing. Tanks shall have thermistors with temperatures displayed on the main system control panel touch screen display. All storage tanks shall be provided with high level overflows and bottom drains discharging into site drains before going to the sewer. Tanks shall be provided with a means for full access inside tanks. Tanks will require a side man way for internal access. All water storage tanks shall be vented to the outside atmosphere of the building. 4. Three (3) pumps shall be provided for the pumping system. One pump shall be for hot water and a second pump for tempered water. The third pump shall be usable as an on line spare for either the hot or tempered water pumps. The pumping package shall be manifolded with corrosion resistant piping. Isolation valves are required to allow removal of a pump for servicing. The valving will also allow putting the spare pump on line by only changing valve positions. The pumps shall be rated at ""F"" gpm/lpm at motor full load rating and 115 feet (minimum) TDH. Motors will have a minimum service factor of 1.15. The pumps shall have a pumping efficiency of at least 70 percent throughout the majority of the operating range. See Water System Sizing Guide, Table I, for varying pump capacities. 5. A control panel shall be provided to indicate operational status of the water pumping system. The panel shall be a NEMA 12 enclosure. Switches with indicator lights shall be provided for motor operations. Pump motor starters and controls shall be located in this panel. Operational indicator lights shall be provided for motor operations and displayed on the main system control panel touch screen display and remote status panel. 6. A Variable Frequency Drive (VFD) shall be provided for each pump and a pressure transmitter shall be provided for each discharge of the pumping system. The VFD controllers shall read the discharge pressure signal from the transmitters and automatically adjust the pumping speed by increasing or decreasing the output frequency of the VFD according to plant demand. The pressure transmitters shall be pre-mounted in the pump discharge piping and pre-wired to the control panel. Included in the control panel are the necessary controls to operate the middle pump (spare pump) from either of the pressure transmitters. 7. Wash/extract system(s) shall be supplied with hot and tempered fresh water through a temperature and pressure compensated blending valve. A temperature gauge will indicate selected blended temperature going into the system. 8. An automatic hot water steam heating system shall be provided to maintain a hot water storage temperature of 160 degrees F independently of the heat recovery system. 9. The flash steam recovery system shall be capable of cooling ""B"" gpm/lpm of returning plant condensate from approximately 250 degrees F to 200 degrees F. The recovered heat shall be added to the stored hot water. A thermostatically controlled bypass valve shall be installed for automatic bypassing of returning plant condensate to avoid hot water tank overheating. Flash Steam Requirement Guide, Table III, for varying capacities. C. Water Reuse System: The water reuse system shall be capable of reusing an average of 25 percent of the water used in the production wash/extractors. The system shall collect, store, heat, and return (to the washroom) the water to be reused. A trash pump, for transferring the reuse water to the storage tank, shall be provided. An alternate supply line from the hot water header shall provide make up fresh water through an automatic fill valve if no reuse water is available. The water reuse system shall meet the following specifications: 1. The water reuse tank shall have a capacity of ""B"" gallons/cu meters. Reuse Water Storage Tank Volumes, Table II, for varying tank capacities. 2 All reuse water shall be screened of suspended solids to a minimum of 1130 microns before entering the reuse water storage tank. Provisions shall be included for easy visual inspection of the screening unit from floor level without disassembly. The water reuse steam heating system shall be capable of automatically maintaining a reuse storage tank temperature of 160 degrees F. 3. The reuse tanks shall be insulated to minimize heat loss. Insulation shall be a minimum of 1-1/2 inches thick, 3 pound density, semi-ridged duct board with factory installed vapor barrier facing and re-jacketed with a minimum .030 thick white PVC plastic. Water storage tanks shall have sight tubes installed with proper bracing. Tank shall have a temperature thermistor with display on the heat recovery system main control panel touch screen display. Tank shall be provided with high-level 4 overflow and bottom 3 drain and discharging into sight drains before going to the sewer. Tank shall be provided with a means for full access inside tanks. Tanks will require a side manway for internal access. Provisions must be made for collecting and discharging settled lint on the bottom of the tank through the 3"" drain valve daily at shut down. 4. Two reuse feed pumps shall be provided. The first pump shall be the main reuse water feed pump. The second pump shall act as a spare. The pumping package shall be manifolded with corrosion resistant piping. Isolation valves are required to allow removal of a pump for servicing. The valving will also allow putting the spare pump on line by only changing valve positions. The pumps shall be rated at A gpm/lpm at motor full load rating and 115 feet (minimum) TDH. The pumps shall have a pumping efficiency of at least 70 percent throughout the majority of the operating range. Motors will have a minimum service factor of 1.15. See Reuse Feed Pump Sizing Guide, Table II, for varying pump capacities. A Variable Frequency Drive (VFD) shall be provided for each pump and a pressure transmitter shall be provided for the discharge of the reuse water pumping system. The VFD controller shall read the discharge pressure signal from the transmitter and automatically adjust the pumping speed by increasing or decreasing the output frequency of the VFD according to plant demand. The pressure transmitter shall be pre-mounted to the pump discharge piping and pre-wire to the control panel. Controls necessary to operate either pump from the pressure transmitter shall be included. 5. Controls for the reuse system shall be located in a control panel mounted on the dual reuse system pumping system with switches and indicating lights provided for motor operations. Operational status of reuse system shall be displayed on the main heat recovery system control panel touch screen display and remote status panel. 6. The entire package will be shipped completely assembled and tested. All interconnecting piping, pumps, controls, valves, and instrumentation will be pre-mounted on a structural steel frame. The unit will only need to be placed in its final location, connected with piping to its proper supply tank and wired to the starters supplied in the separately proposed Water Control Consoles to be operational. 7. The incoming reuse water must be filtered before being pumped to the heat exchanger to at least 354 microns (a 40 mesh MG screen). Furnish and install a 4-plex GFCI outlet on the water reuse panel. The re-use water pit shall be cleaned, repaired and sealed. D. Water Softener System: Heavy-Duty Industrial Water Softening Systems: Furnish and install (one) sodium cycle, cation exchange, pressure type automatic-alternating twin water softening system complete with automatic controls, brine system, piping, valves, gauges, flow meter, accessories, and auxiliary equipment. System shall be capable of conditioning required quantities of water from the normal building grain hardness (as specified) down to a soft level of 0 grains. System shall have sufficient resin capacity to operate the pounds washroom production for the total daily (seven hour workday) production without regeneration. Resin shall be FDA compliant under CFR 21, Chapter 1, 173.25. Mineral tank(s) shall be mild steel, epoxy lined internally and externally. Provide dual 12 x16 manway in upper head and in lower side sheet for full inside accessibility. Tanks to be 100 PSIG rated ASME Code with bottom drain and back wash connections piped to the nearest floor drain. Mineral tanks shall be skid-mounted and pre-piped. External service, backwash and rinse piping shall be Sch. 10, 316L stainless steel. Flanged diaphragm-type valves for service and regeneration. Lug-style butterfly isolation and by-pass valves. Provide pressure gauges and sample cocks on inlet and outlet piping for each mineral tank. Brine Measuring Tank shall be rotationally molded high density polyethylene or equal. Tank sized to provide minimum of (4) regenerations per load of salt at a full salting. Provide adjustable brine float, tank cover, elevated salt plate, a well to house the brine valve assembly and a high level overflow drain connection piped to nearest floor drain. Controls Provide factory-mounted, electronic field-programmable controller with selectable flow meter based and time-based initiated 5-day metered regeneration operating cycles (one-day or equal time intervals) with flow sensor package. The controller will utilize alphanumeric, self-prompting programming for simple start-up and shall be completely automatic and shall sequence all steps of regeneration and return the softener to a service or standby mode and alternate the duplex units. Selectable time or flow meter initiated regeneration is required. The initiating time or volume set points shall automatically reset upon initiation of the regeneration sequence. Controller shall permit manual initiation of regeneration. 120v/1ph/60cy electric specification. Provide (one) 120v GFI duplex water proof receptacle with rated switch. Provide one (1) water test kit will be provided with the system. This kit shall contain hardware and chemicals necessary to perform titrations, measurement of PH, temperature, and water level. E. Miscellaneous Items: The following items and services are also required: 1. The water system shall include total water back-flow prevention into the main water supply. 2. Duplex Condensate Pump Return Systems: Furnish and install (one) duplex condensation pump consisting (1) cast iron receiver, (2) water pumps, (1) mechanical alternator, electrical controls and accessories. The receiver shall be equipped with: (1) inlet strainer, (1) externally adjustable 2-pole mechanical alternator, top and bottom shut-off water level gauge with automatic shut-off if glass is broken, dial thermometer, (2) pressure gauges for pump discharge, (2) bronze isolation valves between pump and receiver plus a valve in each bleed line installed for maintenance, and (2) lifting eye bolts. The receiver size shall be 50-gallon sized at 3 times the system design condensing rate. A cast iron basket inlet strainer with vertical self-cleaning bronze screen shall be provided for the receiver inlet. The centrifugal water pumps shall be flange mounted on the receiver. The pumps shall be close coupled vertical design, and shall have a cast bronze impeller that is bronze fitted to the cast iron pump housing with a renewable bronze wearing ring. The mechanical seal shall be rated for at least 250°F service. The entire pump assembly shall be permanently aligned and dynamically balanced to deliver its full rated capacity. The pump shall be driven by an industry standard motor available ""off the shelf."" The motor shall have a NEMA standard shaft. The horsepower shall be as required for system design condensing rate. The pump manufacturer shall furnish, mount on the pump unit, and wire a U.L. labeled NEMA 3R control cabinet with hinged door, containing: Combination magnetic starters (each having 3 overload relays) with circuit breakers and cover interlock for lock-out tag-out capability (2) Automatic-Off selector switches (2) Momentary contact Test push buttons (2) Pilot run lights (1) Numbered terminal strip (1) Removable control mounting plate Each pump control circuit shall be completely independent of the other. The NEMA 1 mechanical alternator shall (1) change the operating sequence automatically after each cycle, (2) provide simultaneous operation under peak load conditions, and (3) operate the second pump automatically, should the active pump or its control fail. The unit shall have a float switch assembly NEMA1 to turn on a high water alarm mounted in control panel with bell, light and silencing relay with dry contacts to access the building management system alarm. A control circuit transformer for each circuit shall be provided when the motor voltage is three phase or code requires 115 volt controls. The unit shall have a single point power connection. The entire pump package will be U.L. labeled when a control panel is furnished. The manufacturer shall furnish a certified pump performance test. 480v/3ph/60cy electric specification. A water hose bib shall be installed in the mechanical room and connected to a retractable hose that will reach around the entire mechanical room for cleaning the area. Blow-down devices on retractable reels will be installed within the mechanical room area. A minimum (2 each) and shall be capable of reaching around all areas in the mechanical room. This device(s) shall include: A gauged air pressure regulator, with quick disconnect, capable of regulating air pressure from 0 PSI to 30 PSI. Minimum 50 foot length of heavy duty, reinforced non-kink air hose on an automatic retractable reel. Trigger operated air nozzle with extensions for reaching hard to reach areas. Locations of the blow down device(s) shall be depicted on drawings. Isolation valves shall be installed throughout the system to allow maintenance to be performed without draining tanks or the system. All pits shall be inspected for damage, wear, repaired, cleaned and sealed. Pit covers shall be new diamond plate covers with handles. Areas surrounding the pit covers shall be re-grouted and smooth. All water, air, steam and condensate piping from connection points shall be new to the headers of equipment being connected. All new piping shall be insulated and wrapped with PVC plastic covering, identified and have directional flow markings installed. All existing and broken light fixtures shall be replaced with LED lights to allow sufficient lighting to the work areas of the mechanical room. An energy monitor system (Item # 2) for gas, electric, water, steam and sewer shall be incorporated within the design of the mechanical room. The system shall also incorporate Microsoft Office that includes Microsoft Word, Excel and PowerPoint for reports. The system shall allow for daily, weekly, monthly, semi-annual and annual readings and reports. The monitor shall be located within the textile manager s office and include an uninterrupted power supply (UPS) backup. The system shall also include a color printer, copier, scanner and fax machine. F. Remote Status Panel: A remote status panel with a 12 touch screen display panel shall be incorporated into the system (located on the soiled side next to the washers where old remote panel was), which will provide complete operational status of the air compressor; wastewater heat recovery, water storage/pumping, water reuse. The remote status panel shall also provide alarm status and notification for all of the above systems. Monitoring displays shall indicate laundry steam pressure, air header pressure, hot, tempered and reuse washroom header pressures and be appropriately labeled. The remote panel shall indicate the status of water flow patterns and operational pumps. An automatic video graphic recorder shall monitor and record incoming fresh water temperature, preheated hot water temperature, preheated tempered water temperature, wastewater temperature in and wastewater temperature to sewer. The successful offeror shall provide this panel with appropriate signals to the status panel. An hour meter shall be installed on the system to the actual run time of the pumping system for maintenance. G. Water Back-Flow Prevention: 1. The water system shall include total water back-flow prevention into the main water supply. H. VIDEO GRAPHIC RECORDER MONITOR An automatic video graphic recorder shall monitor and record incoming fresh water temperature, preheated hot water temperature, preheated tempered water temperature, wastewater temperature in and wastewater temperature to sewer. The successful contractor shall provide this panel with appropriate signals to the status panel. The successful contractor shall furnish schematic piping and wiring diagrams/drawings for the entire system within 60 calendar days after the date of award. I. PERFORMANCE GUIDES: TABLE I WATER SYSTEM SIZING GUIDE Water Used per Hour A Hot Water Flow Rate per Minute B Tempered Water Flow Rate per Minute C Hot Water Storage Volume D Tempered Water Storage Tank Volume E Pump Flow Rate per Minute F Gal/M3 Gal/Liters Gal/Liters Gal/M3 Gal/M3 Gal/Liters 3000/11.4 30/114 20/76 1300/4.9 1000/3.8 200/757 4500/ 17.0 45/170 30/114 1800/6.8 1400/5.3 280/1060 6000/22.7 60/227 40/151 2100/8.0 1700/6.4 280/1060 7500/28.4 75/284 50/189 2400/9.1 1900/7.2 350/1325 9000/34.1 90/341 60/227 2600/9.8 2100/8.0 350/1325 12000/45.4 120/568 80/303 3200/12.1 2600/9.8 350/1325 15000/56.8 150/568 100/379 3800/14.4 3200/12.1 500/1893 18000/68.1 180/681 120/454 4500/17.00 3800/14.4 500/1893 Basis 60% Hot water, 160ºF (71ºC) Hot Water Storage Temperature TABLE II REUSE FEED PUMP & STORAGE TANK CAPACITY GUIDE Production Washer/Extractor Capacity Pump Flow Rate per Minute A Rinse Water Storage Tank Volume B Pounds/Kg GPM/Liters Gal/M3 1000/454 185/700 800/3.0 1500/680 185/700 110/4.2 2000/908 185/700 11300/4.9 2500/1134 250/950 1400/5.3 3000/1362 250/950 1500/5.7 4000/1814 250/950 1900/7.2 5000/2268 325/1225 2200/8.3 6000/2722 325/1225 2600/9.8 TABLE III FLASH STEAM REQUIREMENT GUIDE Water Used Per Hour A Returned Plant Condensate per Minute B Gal/M3 Gal/Liters 3000/11.4 10/38 4500/17.0 15/57 6000/22.7 20/76 7500/28.4 25/95 9000/34.1 30/114 12000/45.0 40/151 15000/56.8 50/190 18000/68.1 60/227 K Air Compressors and Air Refrigerated Dryer System: NOT REQUIRED ITEM # 2 ENERGY MONITORING SYSTEM: Furnish and install one (1) Energy Monitoring System. System shall provide for real time utility and event measurement for natural gas, electric, air, steam, water and sewer (wastewater) with seamless integration for reporting. System shall include installation of new flow meters and sensors having sufficient analog/digital sophistication for the collection of data required by the system furnished. Utility data shall be captured by a data logger located within the textile care manager s office, which will enable the VA to measure and manage utility usage. Successful contractor shall install new flow meters/sensors and control interconnection wiring, and fully commission system including data reporting set-up. (VA shall be responsible for connecting system to the Internet.) Following are the minimum functional specifications: Distributed network architecture capability (internet connectivity capability) Capability for email/text alerts for utility metrics Standard 32 low speed (frequency less than 25 Hz) digital inputs that are suited for most lower resolution digital output flow meters (i.e. water, gas, steam, wastewater, sewer, etc.) and any other digital event counters. Standard 16 analog inputs that are suited for most analog output temperature sensors, water level sensors, pH monitors, etc. Capacity for expansion up to four additional cards may be installed, either 16-channel low-frequency digital input cards or 8-channel analog input cards, or 4-channel high-frequency digital input cards. Control box for data logger with clear font panel. Windows-based PC computer with systems application software, windows office (to include Word, Excel and PowerPoint), wireless keyboard, mouse, wall mounted minimum 32 inch color monitor and color LaserJet printer. 110/220 volt, 40 watt electric specification. Furnish and install a minimum two (2) hour uninterrupted power supply (UPS) backup. Display and keypad for local interface. Numerical and graphical data sorted by date(s) reporting capability via ArcNet or Web Server Flow meters, sensors, transducers, flow straighteners/conditioners, etc.: Shall be sized by the manufacturer for each specific application and installed according to manufacturer s recommendations. Provide lateral and horizontal supports as required to minimize vibration at the meter location. Wall-mounted storage unit Upon completion of installation, provide as-built documentation of system.
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