Attachment 1 - Statement of Work.pdf

Temporary HVAC & Dehumidification System

Spec #: VENT/DH453013125

Rev: A Page 1 of 15

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 New London CT (NLON) to provide dry and tempered process air for conditioning various industrial applications. 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. US Federal Standard A-A-59326: Standard for cam action couplings.

2.1.2. Nongovernment

2.1.2.1. AHRI 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 the table, below

PIECE NO. QTY. NAME OF PART PARA

NO.

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

V-02 1 HVAC: Single Coil 20,000 CFM 3.3

V-03 3 Industrial Exhaust Blower 3.4

V-04 2 DCCU: 15,000 CFM 3.5

V-05 2 200 Ton Chiller 3.6

V-06 2 600 GPM Chilled Water Pump 3.7

V-07 4 Electric Fan Coil Unit- Heater (150 KW) 3.8

V-08 1000 FT 6 IN Dia Chilled Water Hose 3.9.1

V-09 6 6 IN Dia. 90 Degree Elbows 3.9.4

V-10 400 FT 4 IN Dia Chilled Water Hose 3.9.2

V-11 12 4 IN Dia. 90 Degree Elbows 3.9.5

V-12 400 FT 3 IN Dia Chilled Water Hose 3.9.3

V-13 12 3 IN Dia. 90 Degree Elbows 3.9.6

Rev: A Page 2 of 15

V-14 2 6 IN Dia Globe Valve 3.9.7

V-15 4 Chilled Water Manifold 3.10

V-16 10 Emergency Stop Switch 3.2.3

3.2. Dual Coil 120 Ton HVAC Unit- 20,000 CFM

Physical Attributes

3.2.1. Max Footprint: 21’ long x 8’6” wide.

3.2.2. Max Weight: 20,000 Lbs.

3.2.3. HVAC Unit must be pre-wired for and compatible with a Remote Emergency Stop (E-Stop) Switch.

3.2.3.1. Cable length: approx. 1500 ft.

3.2.3.2. E-Stop Switch shall be equipped with protective Plexiglas or acrylic style clear cover to prevent inadvertent activation.

3.2.3.3. E-Stop cabling must utilize heavy-duty industrial cable for use in flexible, portable, and extra-hard usage applications (type SO cable or equivalent).

3.2.4. Electrical Power Requirements: 1 Circuit at [460±20 Volt AC / 3 Phase / Full Load Amp 400A]

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

3.2.6. 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 2.1.1.1

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

Process Air Requirements

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

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

3.2.10. Post Heater requirements: minimum 240 KW Electric heating element.

3.2.11. Cooling Coil Requirement: minimum 120 Tons.

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

3.2.13. 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. Single Coil Electric Heating HVAC Unit- 20,000 CFM

Physical Attributes

3.3.1. Max Footprint: 21’ long x 8’6” wide.

3.3.2. Max Weight: 20,000 Lbs.

3.3.3. HVAC Unit must be pre-wired for and compatible with a Remote Emergency Stop (E-Stop) Switch.

3.3.3.1. Cable length: approx. 1500 ft.

3.3.3.2. E-Stop Switch shall be equipped with protective Plexiglas or acrylic style clear cover to prevent inadvertent activation.

Rev: A Page 3 of 15

3.3.3.3. E-Stop cabling must utilize heavy-duty industrial cable for use in flexible, portable, and extra-hard usage applications (type SO cable or equivalent).

3.3.4. Electrical Power Requirements: 1 Circuits at [460±20 Volt AC / 3 Phase / Full Load Amp 400A]

3.3.5. Process air outlets: Quantity of four at 20” Dia. each

Process Air Requirements

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

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

3.3.8. Electric heating element requirements: minimum 240 KW Electric heating element, thermostatically controlled to discharge air temperature set point.

3.3.9. Process Air inlet Filtration: Moisture Separator / Demister type filtration for purging 98% of the moisture.

Paper or fibrous filtration media is not acceptable.

3.4. Industrial Exhaust Blower

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

3.4.2. The fan motor shall be NEMA Design B, TEFC premium, industrial, continuous-duty, ball bearing, foot mounted.

3.4.3. The fan assembly shall be equipped with a VFD controller.

3.4.4. The Exhaust Blower must be pre-wired for and compatible with a Remote Emergency Stop (E-Stop) Switch.

3.4.4.1. Cable length: approx. 1500 ft.

3.4.4.2. E-Stop Switch shall be equipped with protective Plexiglas or acrylic style clear cover to prevent inadvertent activation.

3.4.4.3. E-Stop cabling must utilize heavy-duty industrial cable for use in flexible, portable, and extra-hard usage applications (type SO cable or equivalent).

3.4.5. The exhaust blower overall length as well as its width shall not exceed eight and a half feet (≤8'-6"L&W).

3.4.6. 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.

3.4.7. 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.

3.4.8. Exhaust blower shall be consisting of a centrifugal fan with a direct drive motor with discharge directed vertically up (Up Blast: UB).

3.4.9. Fan wheel shall be constructed as a single inlet, single width 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.

3.4.10. 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.

3.4.11. Shall meet all OSHA regulations for a blower placed immediately adjacent to foot traffic.

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

3.4.13. 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.

Rev: A Page 4 of 15

3.4.14. 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.

3.4.15. 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.

3.4.16. 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.

3.4.17. 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.

3.5. Desiccant Climate Controlled Unit (DCCU)

Physical Attributes

3.5.1. Max Footprint: 21’ long x 8’6” wide.

3.5.2. Max Weight: 20,000 Lbs.

3.5.3. All Components must be fully integrated within single housing.

3.5.4. Electrical Power Requirements: 2 Circuits at [460±20 Volt AC / 3 Phase / 400A] each

3.5.5. Process air outlets: Minimum of 2, 20” Dia. Each, ≥5,000 CFM Each.

3.5.6. Pre Cooling Coil male & female 4 IN Dia. Camlock Fitting for Chilled water connections.

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

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

3.5.9. DCCU Unit must be pre-wired for and compatible with a Remote Emergency Stop (E-Stop) Switch.

3.5.9.1. Cable length: approx. 1500 ft.

3.5.9.2. E-Stop Switch shall be equipped with protective Plexiglas or acrylic style clear cover to prevent inadvertent activation.

3.5.9.3. E-Stop cabling must utilize heavy-duty industrial cable for use in flexible, portable, and extra-hard usage applications (type SO cable or equivalent).

Process Air Requirements

3.5.10. Process Air Flow requirements: ≥5,000 CFM Per 20” outlet @ ≥10 inches External Static Pressure

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

3.5.12. Total Cooling capacity: minimum 100 Tons Nominal

3.5.13. Moisture Removal Rate: ≥220 Lbs./Hr. per Outlet (≥440 lbs/hr with 2 outlets, ≥660 lbs/hr with 3 outlets)

Rev: A Page 5 of 15

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

3.5.15. Post Heater thermostatically controlled to discharge air temperature set point.

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

3.5.17. 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

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

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

3.6. 200-230 Ton Air Cooled Chiller

3.6.1. Max Footprint: 25’ long x 8’6” wide.

3.6.2. Operating capacity ≥210 Ton heat rejection @ 95°F Ambient conditions

3.6.3. Maximum operating chilled water flowrate of 600 GPM

3.6.4. Chilled water discharge temperature set point: 42±2°F

3.6.5. 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 2.1.1.1

3.6.6. 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.

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

3.6.8. Chiller must be compatible with pump performance curve

3.6.9. 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.

3.6.10. 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 4.8.

3.6.11. Chiller electrical requirements: 460±20 VAC, 3 PH, 60HZ, Maximum Full Load Amps 400A

3.6.12. Chiller must be operated from a single 460±20 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.

3.7. Pump and Motor Assembly (Supporting Chiller)

3.7.1. Pump must nominally provide 600 GPM at 100 feet of head

3.7.2. 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 2.1.1.1.

3.7.3. Low speed ~1750 RPM Electric motor to operate on 460±20 VAC, 3 PH, 60 HZ

3.7.4. 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.

3.7.5. Equipment and fittings shall be hydrostatically tested per section 4.5.

Rev: A Page 6 of 15

3.8. Electric Fan Coil Unit- Heater (150 KW)

3.8.1. Approximate maximum dimensions: 4ft W x 8ft L x 5ft H

3.8.2. Max Weight: 2000 LBs

3.8.3. ≥7000 CFM Air Delivery @ 5.6 IN W.G. (Total Static Pressure)

3.8.4. Minimum 150 KW Electric heating capacity

3.8.5. 240 Degree F Air Temperature Rise

3.8.6. Thermostatically controlled discharge air temperature set point.

3.8.7. Heater safety controls and limits integrated into controller.

3.8.8. Unit Voltage Requirement: 460±20 VAC, 3 Phase, 60 Hz

3.8.9. Full Load Amperage ≤200 Amp

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

3.8.11. Discharge air outlet: One (1) outlet: 20 IN Dia. Nominal capable of accepting flexible ducting

3.8.12. Forkpocket Slots

3.8.13. Overhead rigging lifting padeyes

3.8.14. Electric Fan Coil Unit must be pre-wired for and compatible with a Remote Emergency Stop (E-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.

3.8.14.1. Cable length: approx. 1500 ft.

3.8.14.2. E-Stop Switch shall be equipped with protective Plexiglas or acrylic style clear cover to prevent inadvertent activation.

3.8.14.3. E-Stop cabling must utilize heavy-duty industrial cable for use in flexible, portable, and extra-hard usage applications (type SO cable or equivalent).

3.8.15. Power Cable: 150 FT 4 conductor power cable with duraline connectors. Wire gauge must be sized to handle fan coil heater MOCP ratting at 460 VAC, 3 Phase power at 150 FT length. See Section 4.12 for details.

3.9. Accompanying Hoses Assemblies, & Fittings

3.9.1. 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 2.1.1.1. Hose assembly must be rated to 150 PSI working pressure. Total length specified in table 3.1.

3.9.2. 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 2.1.1.1. Hose assembly must be rated to 150 PSI working pressure. Total length specified in table 3.1.

3.9.3. 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 2.1.1.1. Hose assembly must be rated to 150 PSI working pressure. Total length specified in table 3.1.

3.9.4. 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 2.1.1.1. Assembly must be rated to 150 PSI working pressure. Total quantity specified in table 3.1.

Rev: A Page 7 of 15

3.9.5. 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 2.1.1.1. Assembly must be rated to 150 PSI working pressure. Total quantity specified in table 3.1.

3.9.6. 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 2.1.1.1. Assembly must be rated to 150 PSI working pressure. Total quantity specified in table 3.1.

3.9.7. 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

3.9.8. 5562the primary chilled water loop.

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

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

3.9.11. The Globe Valve Assembly requires two 6-inch diameter jumper length approx. 5 FT non-ferrous, non-galvanized, metal male x female cam and groove quick-disconnect fittings hose assemblies meeting the requirements defined in reference 2.1.1.1. Assembly must be rated to 150 PSI working pressure.

3.10. 4 Way Cross Manifold

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

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

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

3.10.4. The two four-inch diameter valves shall terminate in a Female Camlock w/ Plug. Fittings must meet the requirements defined in reference 2.1.1.1. Assembly must be rated to 150 PSI working pressure.

3.10.5. 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 2.1.1.1. Assembly must be rated to 150 PSI working pressure.

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

3.10.7. 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

3.10.8. 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 2.1.1.1. Assembly must be rated to 150 PSI working pressure.

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 the fan's external Total Static Pressure (TSP) in inches of Water Gauge (WG) 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 Emergency Stop (E-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

Rev: A Page 8 of 15 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 are 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

Rev: A Page 9 of 15 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 2.1.1.1. 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 2.1.1.1. 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

Rev: A Page 10 of 15

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 4.10.1 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 3.5.

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 3.5.10.

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 Emergency Stop (E-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.

Rev: A Page 11 of 15

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 dry dock; 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±20 VAC / 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).

Rev: A Page 12 of 15

4.15. Lifting & Handling:

4.15.1. Lifting & Handling: Unless exempted in advance, machines shall be firmly attached to a single rigid metal (steel if ≥3K#) caged frame (base boxed w/ four vertical corner posts and four horizontal perimeter beams at top) with both multiple slots for forklift handling and preferably, welded lifting padeye(s), which would result in and permit for safe single point lift operation using an overhead crane without special lifting or handling gear. To minimize a rigging delay or postponement, lifting points other than the preferred welded lifting padeye(s) (e.g. holes drilled thru structural members or bolted padeyes / eyelets) will require an advance design review - consultation - analysis by the Shipyard's Rigging Engineer (Code 713).

The design safety factor for each lifting padeye or point shall be at least five (5) times the load based on ultimate strength. For equipment with two (2) or three (3) padeyes / points evenly spaced, the machine’s weight can be considered equally distributed. For equipment with four (4) padeyes / points, the loading shall be as if each lift point would support half of the machine’s weight. The strongest preference is for multiple padeyes to be aligned in the plane of the lift (i.e. padeyes point towards the center) and to be located above the machine’s Center of Gravity (CG). If the lift points are located below the CG, then the machine’s CG shall be accurately indicated as to both its elevation and position. The Contractor shall provide certification that each lift point meets the criteria described above by design (5 to 1 ultimate strength & 3 to 1 minimum yield) or by load test (2 to 1 w/ no yield). Such certification to include the Lifting Schematic along with any other lifting data shall be included with the documentation attached to the machine. NOTICE: The precise weight of each machine to include its caged frame shall be prominently displayed.

4.15.2. Rigging Caution: A strap fell during a machine lift. Apparently, the strap was dislodged from an area visually inaccessible in the Pre-Lift inspection. Hence, all spaces or voids in which loose matériel may be purposely placed or inadvertently dropped with potential of displacement and then falling during movement or rigging shall have a means of capturing that matériel such as screens, netting, or false floors. For voids in which means to capture the matériel is impractical, an observation port shall be provided for an inspector to visually survey the space or void without use of a ladder, fall protection equipment, or special tooling.

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".

Rev: A Page 13 of 15

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) & Technical Point of Contact (TPOC)

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

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

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 6.6.

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

6.3. Maintenance

6.3.1. Except for daily surveillance checks, the Contractor is responsible for all equipment preventative maintenance and repairs for the duration of the lease. Coordinate maintenance with Shipyard Technical Point of Contact (TPOC).

6.3.2. The vendor shall provide Preventative Maintenance (PM) schedules which are equipment specific. The PM shall meet all requirements determined by the Original Equipment Manufacturer (OEM). The routine PM plan for each piece of equipment shall include a comprehensive list of the components to be serviced as well as identifying the service frequency. (e.g. all consumables to be replace, bearing grease points, belt replacement / tensioning, filter changes, refrigerant charge, oil changes, other lubrication, coolant refills, liquid top-offs, etc.) All PMs conducted shall include a technical service report identifying component, maintenance conducted, date, and next scheduled PM date. Copies of all reports shall be delivered to the project COR and TPOC.

Rev: A Page 14 of 15

6.3.3. In addition to providing routine preventative maintenance, the vendor shall provide a service technician on a weekly basis for the duration of the lease to perform weekly equipment inspections. Weekly equipment inspections shall consist of checking all functional operating parameters of each individual piece of equipment. This shall include but is not limited to: verifying correct equipment performance and operation, checking for diagnostic or trouble codes, measuring discharge air temps, assessing DH equipment reactivation air performance, verify amperage of all electric heating coils, verification of chilled water coils performance, verify pump operation, motor speed, and differential pressure, verify HVAC process air fan speeds, DH process air discharge air temperature and RH performance, Chiller performance operation, etc.

Weekly equipment inspections shall include a technical field report identifying the status of each piece of equipment and shall include all data / measurement points verified. All reports are delivered to the project

COR.

6.3.4. The vendor shall provide a knowledgeable service technician to cover the repair of all equipment deficiencies and malfunctions. The response time for the repair or replacement of deficient equipment shall meet the requirements defined in section 6.2.3.

6.4.…