Sources Sought Notice.pdf

This is a sources sought notice only. No solicitation is being issued at this time. This notice is issued for the purpose of market research in accordance with Federal Acquisition Regulation (FAR) Part 10. Please do not submit price quotations at this time. The issuance of this sources sought notice does not commit the Government to issue a solicitation or ultimately award a contract or purchase order for this requirement. The Government is not liable to pay for or reimburse any companies or entities that respond to this announcement for any costs incurred for preparing responses to this notice.

Material Quantity Rental of HVAC system, Exhaust Blowers, and Desiccant Climate Controlled Unit (DCCU) system

1 Lot

Capable vendors are encouraged to submit the following information to Bob Watters via (robert.watters@navy.mil) by the notice close date and time:

Company Name

Address

Point of Contact

Email

Phone Number

Fax

CAGE Code

DUNS #

Does your firm meet The Small Business Size Standard for NAICS Code 532490 of $35 million annually?

Are you a manufacturer or distributor/dealer?

Can you provide exactly the same items? If not, how do the items differ from the requested items?

What is the typical lead time to produce and ship items after the receipt of an order?

Place of Manufacture

References of past similar contracts or orders

Please email your responses to the attention of Bob Watters at robert.watters@navy.mil no later than 12:00 Noon ET on Tuesday June 07, 2022. All responses shall be limited to 10 pages or less. Pricing information should NOT be submitted at this time.

Primary Point of Contact.: Bob Watters Phone: 207-438-2205, E-mail: robert.watters@navy.mil

STATEMENT OF WORK

1. SCOPE

1.1. Portsmouth Naval Shipyard (PNSY) is seeking to lease a temporary HVAC system, Exhaust Blowers, and Desiccant Climate Controlled Unit (DCCU) system for use at Naval Base Point Loma (NBPL) in San Diego, CA to provide dry and tempered process air for conditioning various industrial applications. This HVAC system is intended to provide continuous tempered air to an industrial work environment, to provide fresh outside air exchanges, to provide exhaust for scavenging effluent fumes from industrial processes, and to maintain positive pressurization with respect to the external environment of the conditioned space. The HVAC system must include two Air Handling Units (AHU’s) and three Industrial Exhaust Blowers, as well as the associated onboard controls to operate the equipment. The DH system must include a single DCCU as well as the associated onboard controls. A chiller, chilled water pump, chilled water hose manifolds, hose assemblies as well as the associated onboard controls shall be provided and will be used to establish a temporary chilled water system. The intent of this chilled water system is to serve the DCCU pre-cooling and post-cooling coil in addition the HVAC unit cooling coil. There is no industrial process steam available at NBPL and all DCCU reactivation process heat shall be generated via electric resistance heating elements.

Steam specifications listed for reactivation heat is only intended as an emergency backup heat source and shall not be used under any normal operating conditions. Fuel fired (NG, LP) combustion reactivation heaters are not acceptable and shall not be considered as an equivalent substitution. All equipment conveying air to and from the industrial space must be pre-wired with remote E-Stop capability in order to provide a means to secure airflow in the event of an emergency response. Each HVAC unit, exhaust blower, DCCU and Chiller must be frame/skid mounted and meet the lifting & handling requirements as defined in the specification.

2. REFERENCES

2.1. Issues of Publications - The following documents in effect on the date of this requested proposal is a part of this specification to the extent applicable, or as specified herein. Within the specification, they shall be referred to by their basic designation only.

2.1.1. Government

2.1.1.1. General Specification For Integral Lifting Attachment Design

2.1.1.2. US Federal standard A-A-59326: Standard for cam action couplings.

2.1.2. Nongovernment

2.1.2.1. ARI Standard 410

2.1.2.2. ASHRAE: Handbook of Fundamentals

2.1.2.3. Spark Resistant Construction (SRC: AMCA Standard 99-0401-86) Type C

2.1.3. Order of precedence - In the event of conflict between the text of this specification and that of the references cited above, the text of this specification shall take precedence. Nothing in this specification, however, shall supersede applicable laws or regulations unless a specific exemption has been obtained.

3. TECHNICAL REQUIREMENTS

3.1. Component List- The vendor is required to bid on the equipment defined in 3.1

PIECE NO. QTY. NAME OF PART PARA

NO.

V-01 thru V-02 2 HVAC Unit: Dual Coil 20,000 CFM 3.2

V-03 1 Industrial Exhaust Blower 3.3 V-04 1 Industrial Exhaust Blower 3.3 V-05 1 Industrial Exhaust Blower 3.3

V-06 1 DCCU: 15,000 CFM 3.4

V-07 1 230 Ton Chiller 3.5 V-08 1 550 GPM Chilled Water Pump 3.6 V-09 1000 FT 6 IN Dia Chilled Water Hose 3.7.1 V-10 6 6 IN Dia. 90 Degree Elbows 3.7.4 V-11 800 FT 4 IN Dia Chilled Water Hose 3.7.2 V-12 16 4 IN Dia. 90 Degree Elbows 3.7.5 V-13 400 FT 3 IN Dia Chilled Water Hose 3.7.3 V-14 12 3 IN Dia. 90 Degree Elbows 3.7.6 V-15 1 6 IN Dia Globe Valve 3.7.7 V-16 8 Chilled Water Manifold 3.8 V-17 4 4 IN dia. Isolation ball valve 3.9 V-18 4 3 IN dia. Isolation ball valve 3.9

3.2. Dual Coil 120 Ton Air Handling Unit (AHU)- 20,000 CFM

Physical Attributes

3.2.1. Physical Attributes: Max Dimensions 20’10” x 7’4” x 9’3” [L x W x H] Max Weight: 16,450 Lbs.

3.2.2. HVAC Unit must be pre-wired for and compatible with a remote E-Stop switch (Remote Emergency Stop Switch). This will enable the air handler to be shut down in response to an emergency condition where airflow needs to be secured. Vendor shall route all E-stops to a central location at Topside Watch where all air handling equipment can be secured.

3.2.3. All Components much be fully integrated within single housing.

3.2.4. Electrical Power Requirements: 1 Circuit at [460 Volt AC / 3 Phase / Full Load Amp 400A]

3.2.5. Process air outlets: Quantity of four at 20” Dia. Each

3.2.6. Process air returns: Quantity of eight at 20” Dia. Each

3.2.7. Post Cooling Coil male & female 4 IN diameter Fittings. Water inlet and outlet connection fittings must be quick disconnect style fittings meeting the requirements defined in reference 2.1.1.2

3.2.7.1. Cooling Coil isolation valves shall be provided for all coil connections. See section 3.9 for requirements.

3.2.8. Chilled water coils must have manual air bleed valves to assist with the initial filling of the chilled water loop.

Process Air Requirements

3.2.9. Process Air Flow requirements: 20,000 CFM @ 7 inches External Static Pressure

3.2.10. Process Air Fan: Fan curve capable of delivering specified flow and pressure, installed with TEFC Premium Motors, and VFD controlled

3.2.11. Post Heater requirements: 240 KW Electric heating element, thermostatically controlled to discharge air temperature set point.

3.2.12. Cooling Coil Requirement: 120 Tons = 289 GPM @ 10°F ΔT based on 42°F Entering chilled water temperature.

3.2.13. Cooling Coil & Electric heating element thermostatically controlled to discharge air temperature set point to meet cooling season and heating season demands.

3.2.14. Process Air inlet Filtration: Moisture Separator / Demister type filtration for purging 98% of the moisture. Paper or fibrous filtration media is not acceptable.

3.3. Industrial Exhaust Blower

3.3.1. Exhaust Blower Airflow capacity: 10,000 CFM @ 14” External Static Pressure

3.3.2. The fan motor shall be NEMA Design B, TEFC premium, industrial, continuous-duty, ball bearing, foot mounted. Motor bearings shall have a minimum L-10 life (40,000 hours).

3.3.3. The fan assembly shall be equipped with a VFD controller that varies the rotation speed (rpm) of the fan by directly adjusting the frequency (hertz) of the power to the motor thereby, efficiently reducing the air volume and thus, significantly reducing its power.

3.3.4. The Exhaust Blower must be pre-wired for and compatible with a remote E-Stop switch (Remote Emergency Stop Switch). This will enable the blower to be shut down in response to an emergency condition where airflow needs to be secured.

3.3.5. The exhaust blower shall have a footprint to allow for normal transport on a flatbed truck regardless of its orientation. Hence, the overall length as well as its width shall not exceed eight and a half feet and the overall height shall not exceed nine feet (≤8'-6"L&W × ≤9'H). For the unit to not exceed the overall height, the Noise Attenuator or Discharge Duct must be hinged so as to fold down.

3.3.6. Exhaust Blower unit must be equipped with suction inlet and discharge outlet fan guards to prevent unintentional debris from being ingested or ejected from the fan housing.

3.3.7. Exhaust Blower Unit Fan wheel and housing must be constructed to meet all requirements of Spark Resistant Construction Type C as per AMCA Standard 99-0401-86, Reference 2.1.2.3.

3.3.8. Exhaust blower shall be consisting of centrifugal fan with a direct drive motor with fan rotation either clockwise (CW) or counter-clockwise (CCW) as long as the discharge is directed vertically up (Up Blast: UB).

3.3.9. Fan wheel shall be constructed as a single inlet, single width (SISW) wheel with flat blades. Airfoil and backward incline blade wheels are not suitable substitutions. This is to account for air & material stream applications where abrasive particles, granular material, heavy dust or fumes are present in the air stream. The blades shall have continuously welded reinforcement to reduce stress.

3.3.10. The Exhaust Blower shall feature a gasketed access door either bolted or a hinged quick-release type for maintenance or clean-out of the internal fan housing.

3.3.11. OSHA regulations require the drive assembly less than seven feet above ground (<7' AG) to be guarded. Dependent on the design, either Weather Covers and/or Drive Guards are necessary to protect personnel from the drive components such as the motor and shaft.

3.3.12. Since the Exhaust Blower is an up blast configuration, it shall feature a drain pipe coupling at the lowest point of the fan housing.

3.3.13. If there is no Noise Attenuator, then an expanding (at least a doubling of its cross-section) slightly tapered hinged (i.e. fold-down) Discharge Duct of at least four feet in length is necessary.

3.3.14. If there is no Discharge Duct, then on the discharge end of the Exhaust blower, a hinged (i.e. fold-down) Noise Attenuator is necessary.

3.3.15. Discharge Temperature sensor emergency shutdown: The exhaust fan must have a discharge air temperature sensor which secures the fan if a rise in air temperature is detected. The fan will be serving Hot Work procedures including metal grinding and welding. If sparks are ingested in the ductwork and a fire is started, the fan needs to be automatically secured to prevent the fire from propagating, eliminate the addition of oxygen to the fire, and reduce equipment damage.

3.3.16. Vibration Sensor & Shutdown: To protect the machine, mounted to the fan shaft bearings shall be a programmable electronic (vice mechanical) accelerometer sensor that would detect vibrations of varying amplitude and frequency. The unit shall be programmable for two set-points. The lower (less damaging) set-point shall cause an alarm “yellow” caution light to be switched on. The higher (more damaging) set-point shall cause a shutdown & “red” warning light to be switched on and the exhaust blower to be switched off.

3.3.17. Transitions: The vendor shall provide two types of suction wyes so that the end-user can choose the diameter(s) for the semi-flexible ducting lines. The single main suction Wye which is fastened (via bolts) to the circular Flanged Inlet to facilitate removal for maintenance is attached whenever the Industrial Exhauster is operating. The main suction Wye will allow for the connection of two each fourteen inch nominal diameter (14"Ø × 2) semi-flexible ducting lines and/or the attachment to either a single or a pair of branch Suction Wye(s). Each of two branch suction Wyes will allow for the connection of up to three each eight inch nominal diameter (8"Ø × 3) semi-flexible ducting lines.

3.4. Desiccant Climate Controlled Unit (DCCU)

Equipment: 15,000 CFM DCCU

Physical Attributes

3.4.1. Physical Attributes: Dimensions 20’10” x 8’4” x 10’1” [L x W x H] Weight: 18,800 Lbs.

3.4.2. All Components much be fully integrated within single housing.

3.4.3. Electrical Power Requirements: 2 Circuits at [460 Volt AC / 3 Phase / 400A] each

3.4.4. Process air outlets: Quantity of three at 20” Dia. Each

3.4.5. Process air returns: Quantity of three at 20” Dia. Each

3.4.6. Pre Cooling Coil male & female 3 IN Dia. Camlock Fitting for Chilled water connections.

3.4.7. Post Cooling Coil male & female 3 IN Dia. Camlock Fitting for Chilled water.

3.4.7.1. Cooling Coil isolation valves shall be provided for all coil connections. See section 3.9 for requirements.

3.4.7.2. Pre and post chilled water coils must have manual air bleed valves to assist with the initial filling the chilled water loop.

3.4.8. DCCU Unit must be pre-wired for and compatible with a remote E-Stop switch (Remote Emergency Stop Switch). This will enable the air handler to be shut down in response to an emergency condition where airflow needs to be secured. Vendor shall route all E-stops to a central location at Topside Watch where all air handling equipment can be secured.

Process Air Requirements

3.4.9. Process Air Flow requirements: 15,000 CFM @ 10 inches External Static Pressure

3.4.10. Process Air Fan: Fan curve capable of delivering specified flow and pressure, installed with TEFC Premium Motors, and VFD controlled

3.4.11. Total Cooling capacity: 100 Tons Nominal

3.4.12. Moisture Removal Rate: 669 Lbs./Hr Total [ Pre-Coiling Coil 250 Lbs./Hr] [Desiccant Wheel 419 Lbs./Hr]

3.4.13. Moisture Removal Rate Basis: [80°F EDB / 71°F EWB & 75°F LDB / 17% RH]

3.4.14. Post Heater requirements: 312 KW Electric heating element, thermostatically controlled to discharge air temperature set point.

3.4.15. Pre Cooling Requirement: 50.8 Tons = 170 GPM @ 10°F ΔT, based on 45°F entering chilled water temperature.

3.4.16. Post Cooling Requirement: 32.1 Tons = 93 GPM @ 10°F ΔT, based on 45°F entering chilled water temperature.

3.4.17. Post Cooling Coil thermostatically controlled to discharge air temperature set point.

3.4.18. Process Air inlet Filtration: Moisture Separator / Demister type filtration for purging 98% of the moisture. Paper or fibrous filtration media is not acceptable.

Desiccant Reactivation Requirements

3.4.19. Reactivation Air Flow Requirement: 4200 CFM

3.4.20. Fan curve and static pressure requirements need to be sized appropriately to overcome pressure drop of all internal components, heating coils and desiccant wheel.

3.4.21. Electric reactivation required, serving as the only reactivation heat source.

3.4.22. Electric Reactivation heat capacity: 232KW

3.5. 230 Ton Air Cooled Chiller

3.5.1. Nominal operating capacity of 230 Ton heat rejection, air cooled chiller

3.5.2. Actual operating capacity ≥215 Ton heat rejection @ 95°F Ambient conditions

3.5.3. Design operating chilled water flowrate of up to 690 GPM

3.5.4. Chilled water discharge temperature set point: 42°F

3.5.5. Chilled water inlet and outlet must be adapted to 6 IN diameter non-ferrous, non-galvanized, metal cam and groove quick disconnect fittings meeting the requirements defined in reference 2.1.1.2.

3.5.6. Chiller controls and interface must provide a display allowing the end user to jog through current and historical performance data. This includes system performance data, record and log system parameters, as well as log system errors during an equipment failure.

3.5.7. Chiller must have a low flow switch and not pressure differential verification as a means for low flow cutoff

3.5.8. Chiller must contain ≥4 compressors and refrigerant circuit loops

3.5.9. Chiller must be compatible with pump performance curve

3.5.10. Must provide inlet and outlet chilled water temperature monitoring. Temperature gauges must provide a minimum resolution of 1 DEG F over a minimum operating range from 30 DEG F to 80

DEG F.

3.5.11. Chilled water outlet must be fitted with a flowmeter rated to 150 PSI providing a minimum accuracy of 1% of reading over a minimum range from 100 to 800 GPM and minimum resolution of 1 GPM. Reference Section 4.7.

3.5.12. Chiller electrical requirements: 460 VAC, 3 PH, 60HZ, Maximum Full Load Amps 400A

3.5.13. Chiller must be operated from a single 460 V, 3 Phase AC power source. Any lower voltage power requirements for controls and/or metering equipment must be met using a vendor supplied integral transformer.

3.5.14. Automatic water makeup: Adjustable feed-water Pressure Reducing Valve (PRV): 90 PSI input reduced to 25 PSI output.

3.6. Pump and Motor Assembly

3.6.1. Pump must nominally provide 550 GPM at 130 feet of head

3.6.2. Pump may be integral to Chiller unit or may be a stand-alone unit where the inlet and outlet piping must be adapted to 6” diameter non-ferrous, non-galvanized, metal cam and groove quick disconnect fittings meeting the requirements defined in reference 2.1.1.2.

3.6.3. Pump must be fitted with differential pressure gauges rated to from 0 to 150 PSI. If the maximum pump discharge exceeds 150 PSI, the gauge must be rated for 20 PSI above the maximum discharge head pressure.

3.6.4. Low speed 1750 RPM Electric motor to operate on 460 VAC, 3 PH, 60 HZ

3.7. Accompanying Hoses Assemblies, & Fittings

3.7.1. Chilled water non-collapsing or collapsible suction/discharge hose, 6 IN diameter, supplied in lengths not to exceed 25 FT, male x female cam and groove quick-disconnect fittings meeting the requirements defined in reference 2.1.1.2. Hose assembly must be rated to 150 PSI working pressure. Total length specified in table 3.1.1 or alternate equipment selection table 3.1.2.

3.7.2. Chilled water non-collapsing or collapsible suction/discharge hose, 4 IN diameter, supplied in lengths not to exceed 25 FT, male x female cam and groove quick-disconnect fittings meeting the requirements defined in reference 2.1.1.2. Hose assembly must be rated to 150 PSI working pressure. Total length specified in table 3.1.1 or alternate equipment selection table 3.1.2.

3.7.3. Chilled water non-collapsing or collapsible suction/discharge hose, 3 IN diameter, supplied in lengths not to exceed 25 FT, male x female cam and groove quick-disconnect fittings meeting the requirements defined in reference 2.1.1.2. Hose assembly must be rated to 150 PSI working pressure. Total length specified in table 3.1.1 or alternate equipment selection table 3.1.2.

3.7.4. 6 Inch diameter Elbows, fitted with non-ferrous, non-galvanized, metal male x female cam and groove quick-disconnect fittings meeting the requirements defined in reference 2.1.1.2. Assembly must be rated to 150 PSI working pressure. Total quantity specified in table 3.1.1 or alternate equipment selection table 3.1.2.

3.7.5. 4 Inch diameter Elbows, fitted with non-ferrous, non-galvanized, metal male x female cam and groove quick-disconnect fittings meeting the requirements defined in reference 2.1.1.2. Assembly must be rated to 150 PSI working pressure. Total quantity specified in table 3.1.1 or alternate equipment selection table 3.1.2.

3.7.6. 3 Inch diameter Elbows, fitted with non-ferrous, non-galvanized, metal male x female cam and groove quick-disconnect fittings meeting the requirements defined in reference 2.1.1.2. Assembly must be rated to 150 PSI working pressure. Total quantity specified in table 3.1.1 or alternate equipment selection table 3.1.2.

3.7.7. 6 Inch diameter globe valve with male x female cam and groove quick-disconnect fittings, and pressure gauges installed on each side of the valve assembly so differential pressure can be measured to balance the primary chilled water loop.

3.7.8. All connectors must contain New O-ring gaskets of proper thickness to prevent leaks.

3.7.9. Globe valve differential pressure gauges range: 0-25 PSIG

3.7.10. The Globe Valve Assembly requires two 6-inch diameter jumper length 5 FT ± 2FT non-ferrous, non-galvanized, metal male x female cam and groove quick-disconnect fittings hose assemblies meeting the requirements defined in reference 2.1.1.2. Assembly must be rated to 150 PSI working pressure.

3.8. 4 Way Cross Manifold

3.8.1. The central feature of the manifold is a metal 6-inch diameter 4-way Cross fitting (6"Ø × 4 ╬).

3.8.2. On two opposing ends shall be a six-inch to four-inch diameter reducing fittings.

3.8.3. Each of the two four-inch diameter legs shall have a four-inch diameter valve.

3.8.4. The two four-inch diameter valves shall terminate in a Female camlock w/ Plug. Fittings must meet the requirements defined in reference 2.1.1.2. Assembly must be rated to 150 PSI working pressure.

3.8.5. One of the six-inch diameter legs shall terminate as a Female camlock w/ Plug and the opposing six-inch diameter leg shall terminate as a Male camlock w/ Cap. Fittings must meet the requirements defined in reference 2.1.1.2. Assembly must be rated to 150 PSI working pressure.

3.8.6. The Plugs and Cap shall be a Hydrostatic type vice a Cleanliness type so as to withstand test pressure.

3.8.7. The entire assembly shall be mounted on a stackable Lifting and Handling foundation. When deployed, the 4-way Cross manifolds shall be inversely stacked as Supply & Return paired unit to save space

3.8.8. Transition fittings to be provided by the vendor for attachment to the 4-way Cross style Universal Manifold to enable 3” Dia. hose connections, 4” Dia. hose connections and 6” Dia. Primary chilled water loop hose connections. Fittings must meet the requirements defined in reference 2.1.1.2.

Assembly must be rated to 150 PSI working pressure.

3.9. Isolation valves

3.9.1. Isolation valves shall be provided at the supply and return side of each chilled water coil. Ball valve construction type valves shall be provided.

3.9.2. The isolation valves shall enable an individual coil to be hydraulically isolated from the main chilled water loop to remove equipment from service without impacting the function of the primary chilled water loop and other operational equipment.

3.9.3. Isolation valves shall be sized to match the diameter of the CHW supply and return hoses for each coil:

3.9.3.1. 3 IN diameter isolation valves shall be provided for each DH unit pre & post coil; unless coil piping is sized larger. QTY: 4 total

3.9.3.2. 4 IN diameter isolation valves shall be provided for each 120 Ton HVAC unit; unless coil piping is sized larger. QTY: 4 total

4. NOTES:

4.1. HVAC Capacity & Utilities

4.1.1. Airflow: An integrated blower (air-handler) is required for independent operation of the unit. With the blower operating at full speed, the airflow in cubic feet per minute (cfm) combined with either the fan's external Total Static Pressure (TSP) in inches of Water Gauge (WG) and/or the motor's power rating in horsepower shall be as stated in section 3.2 and section 3.3.

4.1.2. VFD: The unit shall incorporate variable speed control for the process air blower so that the air-handler shall be capable of adjusting the airflow to half or less of the minimum specified airflow.

4.1.3. Control: The unit shall include a permanently mounted control board accessible without opening any panels with temperature thermometer(s) and pressure gauge(s) as necessary for monitoring and control. The unit shall be completely wired for safety, capacity, and operation such as a power / switch system with circuit breakers, manual / automatic controller, motor overload protection, high / low pressure cut-outs, energy control system, and other essential components. The unit shall be fully controllable under a wide range of loads even though the diurnal and seasonal ambient temperatures varies greatly. All equipment must be pre-wired for and compatible with a remote E- Stop Switch (Remote Emergency Stop Switch). This will enable the air handler to be shut down in response to an emergency condition where airflow needs to be secured. Vendor shall route all E-stops to a central location at Topside Watch where all air handling equipment can be secured.

4.1.4. Design & Component Integration: The unit shall be rigidly mounted within a single integrated framed structure manufactured as a complete entity to include all devices, accessories, and fittings such as energy control system, motors, filters, and other auxiliary components necessary to condition ambient air and deliver that air to ancillary mechanical equipment.

4.1.5. Filtration: HVAC Units shall feature permanent metal filters for the Process Air Inlet filtration so as to withstand exposure from wet ambient conditions. Inlet fibrous (paper) filters deteriorate exceedingly soon after the first rain storm and is not an acceptable substitute. Furthermore, air-handling coils that convey fresh outside treated air directly to the industrial space pressurized compartments should feature Moisture Separator / Demister type filtration for purging 98% of the moisture on saturated days.

4.2. Chilled Water System:

This System includes all equipment to: (a) produce chilled water via a Chiller with integral built-in pump or stand-alone pump; (b) pressurizes the chilled water (via a built-in pump or a separate pump module); and

(c) transports the chilled water via hose assemblies. The pump (motor & impeller) shall be a matched set and shall be a Low Speed (LS i.e. ~1750 rpm) pump capable of delivering the specified flow rate at 100 FT Head. The Chiller rental fee shall be for the Chiller, flow meter and temperature gauges. The Pump rental fee shall include pressure gauges, hose assemblies, meters, adapters, and any independent Pump Module(s) for pressurizing the chilled water.

4.3. Chiller Capacity & Utilities:

4.3.1. Cooling: The primary utility for the Chiller shall be all electric and air-cooled. The minimum nominal chilled water capacity shall be as indicated with the actual capacity, based on an ambient temperature of 95°F dry bulb with an Entering Water Temperature (EWT) of 52°F and a Leaving Water Temperature (LWT) of 42°F, to be not less than 5% of the desired nominal capacity. The unit capacity shall not be greater than one-third above (+⅓) the minimum specified capacity and shall be able to run continuously at one-quarter of that unit's stated capacity.

4.3.2. Flowrate: The pump shall have a minimum specified flowrate of 2.4 gallons per minute (gpm) per ton of minimum cooling capacity at a Head Pressure of one-hundred feet (100'). The evaporator shall function at a maximum flowrate of at least 3.6 gpm per ton of cooling capacity and remain functional at a minimum flowrate of a third or less of the maximum flowrate (≤1.0 gpm per ton). The pump shall have the capability of operating albeit being restricted to one-third of the minimum specified flowrate without damage to the pump or to any other chiller component.

4.3.3. Automatic Operation, Regulation, & Controls: The Chilled Water Unit or Chiller Module shall be equipped with an automatic variable capacity control requiring only initial temperature adjustment of from 38 to 60°F by the operator. Refrigeration circuits shall maintain the specified temperature condition while protecting against coil freeze-up with such devices as a thermostatic expansion valve, suction pressure switch, cylinder unloading solenoid valve, freeze fault protection thermostat, Hot Gas Bypass if specified, etc. The unit / modules shall include permanently mounted control board(s) accessible without opening any panels containing temperature thermometer(s) and pressure gauge(s) as necessary for both monitoring and control. The unit / modules shall be completely wired for safety, capacity, and operation such as a power/switch system with circuit breakers, manual/automatic controller, motor overload protection, high/low pressure cut-outs, energy control system, and other essential components. The unit / modules shall be fully controllable under a wide range of loads even though the daily and seasonal ambient temperatures vary greatly.

4.3.4. Design & Component Integration: The Chiller can either be an integrated unit with combined Chiller and pump capable of both refrigerating and pressurizing water, or, it may be two discrete components consisting of a Chiller Module and separate Pump Module. The unit or each module shall be rigidly mounted within a single integrated framed structure manufactured as a complete entity to include all devices, accessories, and fittings such as cooling coils, condenser fans, compressor(s), pumps with their motors/starters, evaporator & condenser refrigeration circuits, filters, and other auxiliary components necessary to chill fresh water (potable or treated) and deliver that water to ancillary mechanical equipment via a closed loop with little or no make-up water. The unit / modules shall be designed for continuous operation at minimal loading (i.e. one-quarter of full capacity for refrigeration & one-third of full capacity for pumping) despite extreme ambient conditions (e.g. –10 to +100°F and 0 to 100% RH). Additionally, see 4.14 for lifting and handling requirements.

4.3.5. Cooling: The refrigerant shall be internal to the unit with a quantity sufficient for its capacity. The cooling coils shall conform to reference 2.1.2.1. The condenser(s) shall be air-cooled via fan(s). The chiller shall have a sufficient water storage capacity to run isolated from a make-up water connection.

4.3.6. Energy Efficiency: For energy efficient operation in a fully loaded condition, the Full Load Amperage (FLA) rating for the combined Chilled Water Unit or the FLA summation for a separate Chiller Module plus one Pump Module shall be two and a half amperes or less per ton of actual chilled water capacity.

For energy efficient operation in a partially loaded condition, the Chilled Water Unit or Chiller Module shall be designed, if single compressor, with two or more cylinders, but, preferably the unit will have two or more compressors each with its own refrigeration circuit.

4.3.7. Transition: The chilled water end connections on the Chilled Water Unit or the Chiller Module plus the Pump Module where the chilled water "standard" type hose assemblies would connect shall terminate in 6 INCH CAM-LOCK type connections with female fittings on the inlet (supply) and male fittings on the outlet (discharge). Fittings must meet the requirements defined in reference 2.1.1.2.

Assembly must be rated to 150 PSI working pressure.

4.4. Coolant Free: Besides manifolds and hose assemblies that are normally flushed and tested, all machinery conveying chilled water such as: the Chiller, Pump and machines with a chilled water coil; shall arrive with no coolant of any type in its piping (i.e. No Water & No Anti-Freeze).

4.5. Chilled Water Hose Assembly / Manifold Construction / Cooling Coil Hydrostatic Testing: For standard Chilled Water Hose assemblies of six inch nominal diameter or less, the exterior cover shall be a thick rubber (Buna-N) type material designed as a CHW insulator in which the nominal hose length is twenty-five feet with one male and one female quick disconnect Fittings. All Chilled water connectors / fittings must be quick disconnect style fittings meeting the requirements defined in reference 2.1.1.2. Chilled Water Hose assemblies shall be non-collapsible and the camlock fittings shall be attached to the hose material via the more secure, newer type, crimp style hose fitting via a single specified diameter, elongated sleeve length and not from the less secure, older type, band clamp style hose fitting via multiple universal diameter, shorter ferrules. Gaskets for couplings shall be pre-installed inside the female coupling(s) of hose assemblies and manifolds. The gasket shall be inspected for presence, tight fit, and lack of deterioration. Gaskets shall not protrude into the waterway. A gasket with a smaller diameter than that of the recess can cause a leaky connection when pressure is applied. Hose/manifold/valve assemblies and all cooling coils shall be hydrostatically tested with new hose gaskets for Strength and Tightness and/or Valve Seat Leakage by an independent (of the Contractor) and certified Vendor to a minimum of 150 psig for five minutes and visually inspected and/or internal valve leakage measured while pressurized.

Hydrostatic test date shall be within one calendar year of scheduled Arrival Date of the equipment.

Hoses/manifolds/valve assemblies shall have a banded identification (ID) tag or label attached to the assembly displaying the hydrostatic test results. The Hydrostatic Test Certificates issued by the certified testing facility shall provide a copy of the certificates to PNSY Temporary Services Design Engineer and the Contracting Office, Code 400.

4.6. Phase Rotation: To prevent or identify an out-of-phase electrical power situation, three-phase machines shall include either: (a) a reverse phase relay and/or meter that identifies an out-of-phase condition and prevents operation especially applied to complex machinery in which such a condition could cause damage or (b) an arrow prominently displayed at an appropriate location on the machine's housing to indicate the proper direction of shaft rotation with the ability to observe a portion of the shaft after a momentary application of power (a.k.a. jog or bump). A reverse phase relay is not required nor desired for VFD motors, however, the VFD shall have a jog button so as to verify correct rotation.

4.7. Supplemental Equipment: For the protection and cleanliness of the machinery components, all chilled water connection points shall be shipped with plug/cap fittings.

4.8. Hydronic Flow Meter: Attached to the Chiller and its associated pump shall be a continuous reading liquid flow meter, preferably, in-line with flow. The type of meter may be Electronic Metering or Axial Turbine.

The physical positioning of the instrument shall downstream of the Chiller immediately after its discharge.

The flow meter assembly shall be rated for 150 psig; dimensioned for the heat exchangers nominal 3-inch diameter pipework; and constructed for accuracy as described below. The instrument shall be calibrated by a licensed Metrology Laboratory within five years of its scheduled delivery with certified calibration test results both accompanying the flow meter assembly and reported via E-mail to the Temporary Systems Design Engineer.

If the flow meter is an Axial Turbine type (e.g. McCrometer Model MG100 / MS100 -or- equivalent) with no factory installed straightening vanes, then the entire flow meter assembly shall be constructed so as to provide straight lengths of pipe to the inlet of the instrument housing of at least ten pipe diameters and the outlet of the instrument housing of at least two pipe diameters, unless the manufacturer requires an even greater linear distance. Since the entire Axial Turbine flow meter assembly with no factory installed straightening vanes could be four feet in length, a steel stand would be required for mounting the axial turbine flow meter assembly horizontally with the meter on top so as to meet lifting and handling requirements. This shall be integral with the heat exchanger and pump assembly. Although straightening vanes could reduce the length of the Axial Turbine flow meter assembly by cutting in half the number of pipe diameters upstream to five, a L&H stand would still be required.

4.9. Desiccant Climate Controlled Unit & Moisture Removal Rates: The Vendor shall provide the Moisture Removal Rate (MRR) for just the Desiccant wheel in either pounds per hour (lb/hr) or gallons per day (gal/dy) and state the basis for that computation at an ambient temperature (Dry Bulb i.e. °F) and ambient humidity (Wet Bulb in °F or Relative Humidity as a % or Humidity Ratio in gr/lb – grains of moisture per pound of dry air). The Vendor shall provide the Dehumidification system Moisture Removal Rate (MRR) which includes the Pre-Cooling Coil as well as the Desiccant wheel, for conditions at Portsmouth, NH Summer DB / WB 2½% = 86°F / 73°F. See reference 2.1.2.2. ASHRAE: Handbook of Fundamentals, Weather Data and Design Conditions, Climatic Conditions for United States and Canada provides data as follows for Portsmouth, NH (PEASE). Section 4.9.1 lists the acceptable Desiccant wheel only Moisture Removal Rates for three different data points on the Psychrometric Chart dependent on the particular Original Equipment Manufacturer's (OEM) tested or published criterion.

4.10. DCCU Capacity & Utilities:

4.10.1. Moisture Removal: As a stand-alone unit, the DCCU shall be capable of delivering processed air at 0°F dew point or lower when the ambient conditions approach saturation at a temperature of 75°F.

The minimum rate for moisture removal at the specified full rate of airflow is based on ambient conditions as synopsized below of either:

{ 75 degrees Fahrenheit at 50% Relative Humidity (75°F @ 50% RH) } or ( 80 degrees Fahrenheit at 60% Relative Humidity (80°F @ 60% RH) ) or [ 90 degrees Fahrenheit at 120 grains per pound of dry air Absolute Humidity (90°F @ 120 gr / lb AH)

4.10.2. Reactivation: The type of utility for the reactivation heater (e.g. electricity or steam) shall be as specified in section 3.2.

4.10.3. Airflow: An integrated blower (air-handler) is required for independent operation of the unit.

With the blower operating at full speed, the airflow in cubic feet per minute (cfm) combined with either the fan's external Total Static Pressure (TSP) in inches of Water Gauge (WG) shall meet the performance stated in section 3.2.

4.10.4. Compatibility: The DCCU shall be inclusive of all associated temperature conditioning coils designated to be to serve as pre-treatment and downstream post-treatment to the desiccant wheel.

4.10.5. Control: The unit shall include a permanently mounted control board accessible without opening any panels with temperature thermometer(s) and pressure gauge(s) as necessary for monitoring and control. The unit shall be completely wired for safety, capacity, and operation such as a power / switch system with circuit breakers, manual / automatic controller, motor overload protection, high / low pressure cut-outs, energy control system, and other essential components. The unit shall be fully controllable under a wide range of loads even though the diurnal and seasonal ambient temperatures varies greatly. All DCCU equipment must be pre-wired for and compatible with a remote E-Stop Switch (Remote Emergency Stop Switch). This will enable the air handler / DCCU to be shut down in response to an emergency condition where airflow needs to be secured. Vendor shall route all E-stops to a central location at Topside Watch where all air handling equipment can be secured.

4.10.5.1. Moisture Removal: The reactivation wheel shall be capable of being manually shut-off and still be able to operate the process air blower.

4.10.5.2. Airflow: The unit shall incorporate Variable Frequency Drive (VFD) control for the process air blower so that the air-handler shall be capable of adjusting the airflow to 30% of the maximum specified airflow.

4.10.6. Design & Component Integration: : The unit shall be rigidly mounted within a single integrated framed structure manufactured as a complete entity to include all devices, accessories, and fittings such as the desiccant wheel, desiccant driver, reactivation heater, energy control system, motors, filters, and other auxiliary components necessary to dehumidify ambient air and deliver that air to ancillary mechanical equipment. The unit shall be designed for continuous operation despite extreme ambient conditions (e.g. –10 to +100°F & 0 to 100% RH). The desiccant dryer shall be an adsorption type wheel with a single desiccant rotary structure. Desiccant wheel matériel can be either the former titanium silica-gel or the more recent zeolite or even a more advanced superadsorbent Polymer, but, not the older more problematic lithium chloride.

4.10.7. Filtration: The air to be processed shall be pre-filtered and its filtration efficiency shall be 30% or greater. The unit shall be delivered with all clean (reusable) and/or all new (replaceable) filters. The filters shall be of the correct dimension and in sufficient quantity to completely fill the design space of the filter rack(s) with no discernible gaps. Prior to start-up, the Vendor shall demonstrate that all reusable filters are clean & replaceable filters are new and are properly installed. For dehumidifiers, the air to be filtered is at or near the intake(s) to the Process Air Inlet(s).

4.10.8. Supplemental Equipment: For the protection and cleanliness of the machinery components, all air and water/steam connection points shall be shipped with sheet metal covers (air) and plug/cap fittings (water/steam).

4.11. Termination Couplers: Process Air outlets for the various ventilation systems shall terminate in nominal twenty-inch diameter openings either by design or by providing the proper reducers. This will allow for the attachment of nominal twenty inch diameter flexible ducting as provided by either the Vendor and/or the Government. The Vendor shall ensure that the flexible ducting furnished is sized to match the Process Air Inlets and Process Air Outlets such that the ducting can easily fit over the end fittings and/or reducers.

4.12. Process Air Doors or Covers: Air handling machinery conveying Process Air shall include tightly-fitting non-detachable doors (preferred) or detachable covers (permitted) for each suction inlet and discharge outlet.

4.13. Construction: Except as noted for a particular machine type, units shall be a single integrated framed structure manufactured as a complete entity to include all devices, accessories, and fittings necessary to perform the function for which it was designed. Each unit shall be capable of continuous, year-round, outdoor, unmanned operation even at minimal loading while exposed from inclement to extremely harsh weather (e.g. deep snow, strong & gusty winds, and/or heavy rain) and varied ambient conditions (–10 to +110°F & 0 to 100% RH). Machines shall meet State and federal requirements for its type such as the National Electrical Code (NEC) for electrical devices / components and the American Society of Mechanical Engineers (ASME) for pressurized vessels / components. Machines shall be modular in design so as to act as a stand-alone unit; compact so as to fit in the tight confines of a drydock; portable so as to be transported by forklift and then lifted by crane; and ruggedly constructed so as to endure a marine industrial environment. Machines shall be newly manufactured / completely refurbished and factory tested within ten (10) years.

4.14. Electrical: Electrical components shall conform to a NEMA standard (NEMA 3 or 4) that allows for unsheltered outdoor use of the unit. Each machine shall require only one type / source of electrical power (460 VAC +5% / three-phase / 60 hertz). The type of electrical power required (voltage & amperage) must be clearly indicated on the outside of the equipment, readily detected, and collocated with all other electrical information. The Vendor shall provide the Project Technical Liaison with the following details:

(i) electrical power type (amperage & voltage); (ii) type of electrical connectors (for three phase, specify whether or not equivalent to Duraline E1016); (iii) breaker type/size or recommended capacity for the electrical source; and (iv) whether the machine is furnished with over-current protection. Three phase powered (i.e. 460V) machines shall have panel-mounted male cam-lock connectors equivalent to a single Duraline E1016 for each phase if ≤ 285A (preferred, permits 2/0 cable) or ≤ 385A (minimum, but restricted to 4/0 cable).

4.15. Lifting & Handling:

4.15.1. See reference 2.1.1.1.

4.16. Noise Requirement: When operating at full speed, noise levels must not be over 105 dB[A] and preferably, 85 dB[A] or less at six feet from the unit or frame unless a quieter noise level is specified. A hearing protection safety placard shall be posted on each machine generating more than 85 dB[A] at the unit's edge or frame.

4.17. Machinery / Equipment Tagging and Markings: Fluid piping inlet(s) / outlet(s) must be clearly marked.

Machinery and itemized equipment require tagging to show Project Number / Technical Specification Identification (ID) Number

4.18. Vendor Identification Of Itemized And Ancillary Equipment: The Contractor shall uniquely tag and permanently mark all of its ancillary and itemized equipment / hardware (e.g. manifolds, hose assemblies, pipe fittings, duct adapters, ducting, etc.) so as to differentiate from that owned by either the Shipyard or other Vendors. Tagging alone is sometimes not sufficient. Suggest painting the ferrous metal on hardware and the end fittings on hose assemblies with unique and distinct color(s).

4.19. Dead Front Control Panel or External Controller: Access to basic machinery controls, such as a Dead Front Control Panel or External Controller, shall be such that there is non-exposure to energized "live" electrical circuits or other components regardless of voltage, to include control circuitry, by "a person on the operating side of the equipment".

5. GOVERNMENT FURNISHED MATERIAL (GFM):

5.1. Insulated Duct Work: 20 IN Dia. R-4 flexible duct: 2,700 FT

6. RESPONSIBILITES

6.1. Government

6.1.1. Equipment Technical Evaluation: C230 Engineering

6.1.2. Receipt Inspection: Contractor Officer Representative (COR) & Temporary Service Zone Manager

(TSZM)

6.1.3. Coordination of equipment delivery & returns: COR & TSZM

6.1.4. Schedule equipment service, repair, and training: COR & TSZM

6.2. Contractor

6.2.1. Any and all required State approved safety features (i.e. safety pressure relief valves, low water cutout, over pressure protection) installed with applicable State certification.

6.2.2. The contractor shall maintain a stringent maintenance program and be responsible for all routine maintenance, except for daily check of liquid levels. The contractor shall provide oil, filters, coolant, and lubricant for engine and compressor operation during the rental period.

6.2.3. The equipment will be operating around-the-clock under a rigorous deployment performance schedule. Within twenty-four (24) hours of initial notification of the need for repair, the Contractor shall have a knowledgeable and equipped technician on the job-site fully prepared to repair the rental equipment. The defective unit(s) shall be repaired within forty-eight (48) hours of initial notification or, if the original defective unit(s) cannot be made operational, replaced within seventy-two (72) hours of initial notification. If the equipment failure is not the fault of the Government, the Contractor shall bear all costs associated with its repair and/or replacement.

6.2.4. The contractor shall provide equipment start-up, on site commissioning and functional performance testing reports per 6.3.

6.2.5. The contractor shall be responsible for equipment failure not arising out of abuse or negligence by the government.

6.2.6. There shall be no changes unless authorized by the Contracting Officer.

6.2.7. The vendor shall provide technical support to PNSY project personnel as required.

6.2.8. The Vendor shall provide all deliverables specified in section 6.7

6.2.9. The vendor shall provide technical support to PNSY project personnel as required.

6.3. Machinery Quality Checklist (MQC): The vendor shall develop and provide a Machinery Quality Checklist (MQC) unique for each machine. The MQC shall include an operational checklist and Objective Quality Evidence (OQE) of Functional Performance Testing identified in 6.3.1 and 6.3.2 of each machine prior to shipment. An MQC report shall be generated for each specific piece of rental equipment being provided to fulfill the contract that shall identify the piece of equipment, Make, Model Number, and serial number, and test date of equipment. The MQC reports shall be authored by the vendor. The vendor shall provide blank templates of each MQC report and provide these to PNSY along with the Equipment Bid/Proposal package. The MQC template reports (blank) shall be reviewed for technical acceptance during the Technical Evaluation of the Vendors Bid/Proposal. Any changes to the MQC’s shall be identified at the proposal review. All equipment testing and validation to support the MQC report shall be completed within one month of ship date to PNSY, or detachment location. Copies of the completed MQC reports shall be provided to PNSY Contracting Office C400 and Temporary System Design Engineer for review one week prior to equipment ship date.

6.3.1. MQC Report Operational Checklist: At a minimum, MQC reports shall include 2 primary sections:

first is a basic functional check list to verify all equipment components are in place, intact, and in good working order. This check sheet shall include, at a minimum include items such as gaskets, new AHU filters, valves operational, pump suction and discharge pressure gauges, air bleeder valves, pump strainers cleaned, steam traps present, flow meter installation / location, Flow meter calibration certificates from a certified test lab, piping end caps to maintain cleanliness. If components (such as a flow meter) within a packaged unit configuration (such as a chiller) are found to be non-operational, damaged, etc. the original item is to be replaced or repaired, and not substituted with an auxiliary replacement system.

6.3.2. Example Line item format of an MQC Checklist:

Item / Component Inspection Date Technician Signature

Condition:

Satisfactory or Unsatisfactory

Flow Meter: installation location provides correct Pipe L/D ratio

Chilled Water Pump Suction and Discharge Pressure gauges installed

Pump suction Strainer:

clean and free of debris