Statement_of_Work_approved.pdf

Page 1 of B&F 1C4W Replace Cooling Towers

REPLACE COOLING TOWERS

FEDERAL CORRECTIONAL COMPLEX

PETERSBURG, VIRGINIA

STATEMENT OF WORK

Prepared By:

U.S. DEPARTMENT OF JUSTICE

Federal Bureau of Prisons FCC Petersburg, Virginia 1060 River Road Hopewell, VA 23860

Approved RAPHAEL

RAMOS

Digitally signed by RAPHAEL RAMOS DN: c=US, o=U.S. Government, ou=Dept of Justice, ou=BOP, cn=RAPHAEL RAMOS, 0.9.2342.19200300.100.1.1=15001003 021030 Date: 2019.04.17 10:26:12 -04'00'

Page 2 of

MID ATLANTIC REGIONAL OFFICE

FACILITIES DEPARTMENT

ASSIGNED TO APPROVED CONTINGENT

APPROVAL

NOT APPROVED DATE

ENGINEERING TECH

ELECT ENGINEER

MECH ENGINEER

CIVIL ENGINEER

TEL COMM

ARCHITECT

OTHER

FACILITIES

ADMINISTRATOR

Julie B. Rossi ---------------------------------------------->4-17-19

STATEMENT OF WORK (SOW)

Replace Cooling Tower

Federal Correctional Complex Petersburg

PROCUREMENT CONTRACT REQUIREMENTS

1.1 SUMMARY

A. The Federal Bureau of Prisons (FBOP), Federal

Correctional Complex Petersburg, located at 1060 River Road, Hopewell, Virginia is soliciting a contractor to supply all labor, materials and equipment necessary to replace two (2) cooling towers and associated system appurtenances in accordance with the project work defined by this SOW, the project drawings, and other Contract Documents.

1.2 WORK COVERED BY CONTRACT DOCUMENTS

A. Demolition and disposal off-site of two (2) cooling towers and associated piping, controls, electrical variable frequency drives, disconnect switches, associated wiring and raceways, supports, and miscellaneous associated appurtenances.

B. Provision at the same demolition location of two (2) new cooling towers and associated piping, controls, electrical variable frequency drives, disconnect switches, associated wiring and raceways, supports, and miscellaneous associated appurtenances.

C. Provision of structural work, including piping/system supports, and alteration of existing tower support and anchoring components.

D. Provision of an UL Listed system of heater cables, components, and controls to prevent condenser piping from freezing. (Run outside, from under cooling tower to building).

E. Provision of alterations and interfacing controls work associated with the existing Building Automation System (BAS) and new towers.

F. Provision of Water Treatment Specialist Services to assist with pre-cleaning, passivating, reinstating chemical treatment, Water Treatment Program, and start-up, tests and inspections.

G. Provision of testing, adjusting, and balancing, showing successful system functionality with new tower system integration.

H. Provision of delegated design engineering services noted within this SOW.

1.3 SCHEDULE

A. The regular working hours for contract services shall be 7:30 a.m. to 4:00 p.m. Monday through Friday, with the exception of federal holidays.

B. Contract work will continue until the completion of the work, and it is fully functional. The contract work period shall not exceed One-Hundred Nineteen

(119) calendar days.

C. The contractor shall provide a written request to the Contracting Officer Representative (COR) for approval of changes to the work schedule.

1.4 METHOD OF PERFORMANCE

A. The services and construction work provided, being professional in nature, will be consistent with the policy required by the Facilities Department of the Federal Bureau of Prisons.

B. The contractor shall observe all safety regulations (i.e.; OSHA) and all Government security regulations.

C. Minor material and work not specified or shown, but necessary for the completion of this project, shall be provided, without additional compensation from the Government.

D. During inclement weather (e.g.; fog, snow, etc…) where visibility is inadequate for security reasons, personnel, materials, equipment and tools may not be allowed to enter the work site.

E. The institution’s Contracting Officer (CO), without delegation, is authorized to take actions on behalf of the government to modify the contract terms, conditions, requirements, details, and/or delivery schedule(s).

F. However, the CO may delegate in writing, certain responsibilities to an authorized representative. A Contract Officer Representative (COR) shall monitor the services/work.

G. The COR will monitor/observe the day-to-day operations of the project and serve as liaison between the institution and the contractor.

H. The COR shall be the main contact for scheduling, site access, testing and final inspection, etc.

I. The contractor shall immediately contact the COR if discrepancies are discovered that may impact project schedule or cost.

1.5 ACCESS TO SITE

A. Contractor shall have limited use of Project site for construction operations, as indicated on Drawings by the Contract limits and as indicated by requirements of this SOW. Contractor shall not disturb portions of Project site beyond areas in which the Work is indicated.

1) Where certain utility work is shown to extend beyond contract limits, coordinate and schedule such work with Owner at least seven days in advance of such work. Obtain Owner’s written permission before proceeding with such work.

2) Contractor shall keep driveways, walkways, and entrances serving institution clear and available to Owner, Owner’s employees, and emergency vehicles at all times. Do not use these areas for parking or for storage of materials.

B. Contractor shall schedule deliveries to minimize space and time requirements for storage of materials and equipment on-site.

C. Contractor shall maintain portions of existing building affected by construction operations in a weather tight condition throughout construction period, and shall repair damage caused by construction operations.

D. Contractor shall maintain portions of existing grounds, landscaping, and hardscaping affected by construction operations throughout construction period, and shall repair damages caused by construction operations.

1.6 STORAGE AND UTILITIES

A. The Federal Bureau of Prisons (FBOP) will provide a secure lay-down area (indicated on Drawings) for storage of all equipment and material deliveries from the Contractor. The FBOP does not take any responsibility for the security of such equipment and materials. The Contractor will work thru the COR to address any security issues related to storage.

B. The FBOP will provide minimal electricity service (120V), for battery chargers, radios, small hand tools, etc.

C. The FBOP will provide restroom services, provided the facilities are properly maintained.

D. The FBOP will provide non-potable water. Contractor will provide all remaining supplies and materials needed to complete this project.

1.7 DEFINITIONS

A. Schedule of Values: A statement furnished by Contractor allocating portions of the Contract Sum to various portions of the work and used as the basis for reviewing Contractor’s Applications for Payment.

B. Action Submittals: Written and graphic information that require engineer and Contracting Officer’s responsive action. Action submittals are those submittals indicated in the specifications herein as “Action Submittals”.

C. Informational Submittals: Written and graphic information that do not require engineer and Contracting Officer’s responsive action. Submittals may be rejected for not complying with requirements.

Informational submittals are those submittals indicated in the specifications as “Informational Submittals”.

D. COR: Government’s Delegated Contracting Officer Representative.

1.8 GENERAL SUBMITTALS

A. Schedule of Values

1) A Schedule of Values shall be submitted to the

COR at the earliest possible date, but no later than seven days before the date scheduled for submittal of initial application for Payment.

2) The schedule of values shall be arranged with format of AIA Document G703.

B. Contractor’s Construction Schedule

1) A Gantt-Chart type, comprehensive, fully developed, horizontal, construction schedule shall be submitted within 10 days of established work commencement date. This chart shall indicate each significant construction activity separately.

2) At monthly intervals, the Gantt-Chart schedule shall be updated to reflect actual construction progress and activities, and submitted to the COR.

C. Daily Construction Report shall be submitted to the COR recording the following information or events:

1) List of subcontractors at Project Site.

2) List of separate contractors at Project Site.

3) Approximate count of personnel at Project Site.

4) Equipment at Project Site.

5) Material Deliveries.

6) High and Low temperatures and general weather conditions, including presence of rain or snow.

7) Accidents.

8) Meetings and significant decisions.

9) Unusual events, whether or not work related.

10) Stoppages, delays, shortages, and losses.

11) Meter readings and similar recordings.

12) Emergency procedures.

13) Orders and requests of authorities having jurisdiction.

14) Change orders received and implemented.

15) Construction change directives received and implemented.

16) Services connected and disconnected.

17) Equipment or system tests and start ups and inspections.

18) Partial completions.

19) Substantial Completions authorized.

1.9 PROJECT SECURITY

A. The security checkout process will require the completion of an Authority to Release Information form, and a National Crime Information Check (NCIC).

B. The Federal Bureau of Prisons reserves the right to suspend, limit or revoke the contractor’s privileges at the facility due to violations of Federal Bureau of Prisons security procedures.

C. Contractor personnel shall wear clothes that are suitable for the work they are performing. The inmate population wears khaki and olive green clothes. For this reason, no Bureau of Prisons employees or contract personnel can wear these colors. No sleeveless shirts (tank tops), or camouflage clothing are allowed.

D. The Contractor shall adhere to all regulations and guidelines prescribed by the institution, to include guidelines relating to safety, custody, and conduct.

E. The Contractor shall be escorted by institutional staff at all times and will have limited contact with the inmate population. The Contractor shall not move unescorted on institution grounds or have unsupervised contact with inmates. Any violations of the institution rules and regulations regarding inmate contact will result in administrative action.

F. Cell phones, pagers, two-way radios or communication devices of any kind are not permitted while working on the grounds of the institution.

G. All vehicles entering the grounds must be removed at the end of each workday. When vehicles are not being utilized or operated, the vehicle shall be turned off and the keys secured.

H. Weapons are strictly prohibited. No weapons are allowed on institution property, including stored weapons in contract workers’ personal vehicles. All vehicles entering the property are subject to search procedures. All contract workers shall be instructed to leave all weapons at their residence.

I. The contractor shall be constantly aware of security and maintain a professional relationship with the inmates at all times if they come in contact with the inmate population. Any violations of the institution rules and regulations are to be brought immediately to the attention of the appointed Government employee for prompt and proper action.

J. Contractors will not have unsupervised contact with inmates. Contractors will not supervise inmates and will not be responsible for the administrative management of inmates.

K. Contractors will be escorted by Federal Bureau of Prisons staff members, at all times.

L. If a contract worker recognizes an inmate, report it to your escorting staff immediately. Recognition of an inmate must be documented.

M. The Contractor shall be responsible for proper tool and equipment inventory/control. Tool accountability is the responsibility of the contractor. All tools must be inventoried entering and exiting the work site and must be accounted for at the end of each day. Any broken tools shall be inventoried and all parts must be accounted for on each broken tool. Report any lost, missing or broken tools to the escorting staff immediately. Do not leave equipment and/or tools lying around the work site. Do not spread yourself or your work crew too thin that you lose good management of your equipment and tools. Bring only the items being utilized for that day’s work.

N. The Contractor shall be responsible for proper key control. All keys must be accounted for and should be kept under good control management. Report any missing keys (including personal keys) to the staff escorting officer immediately.

1.10 PROGRESS CLEANING

A. Clean Project site and work areas daily. Dispose of materials lawfully. Maintain Project site free of waste materials and debris.

SPECIFICATIONS CONTRACT REQUIREMENTS

1.1 GENERAL

A. Cooling Tower System shall be provided in strict accordance to the contract requirements. Associated components consist of, but are not limited to, hydronic piping, hydronic specialties, piping supports, hydronic insulation, Building Automation System (BAS) interfacing, electrical discipline support systems, including variable frequency controllers and heat tracing, and chemical water treatment.

1.2 SUMMARY

A. Contractor shall demolition, dispose, and replace two (2) existing cooling towers and associated components and accessories, in entirety.

B. Contractor shall make provisions for testing and measuring the existing condenser water flows through the system prior to starting demolition. The COR shall witness said procedure. Contractor shall provide written report.

C. Contractor shall provide all mechanical, electrical, and controls/ wiring required for one operational cooling system, including unspecified miscellaneous appurtenances to meet current codes, local regulations, and/or current manufacturer recommendations.

1.3 ACTION SUBMITTALS

A. Cooling Tower Product Data

1) Published data for each type of product. Include rated capacities at design conditions, physical dimensions, weights, sizes, locations of field connections, and furnished specialties and accessories.

2) Maximum flow rate.

3) Minimum flow rate.

4) Pressure required at cooling tower supply piping connections.

5) Pressure required at basin heater supply piping connections.

6) Pressure required at collection basin sweeper supply piping connections.

7) Drift loss as percent of design flow rate.

8) Sound pressure levels for operation with fan off, fan at 50 ft. from cooling tower, fan at minimum speed, and fan at design speed.

9) Sound power levels in eight octabe bands for operation with fan off, fan at minimum speed, and design speed.

10) Fan airflow at design conditions, brake horsepower, and drive losses (indicated in horsepower and percent of brake horsepower).

11) Fan motor electrical characteristics including, but not limited to, speed, voltage, phase, hertz, amperage, efficiency, and power factor at 100, 75, 50, and 25 percent of nameplate horsepower.

12) Electrical power requirements for each cooling tower component requiring power.

13) Preparation instructions, manufacturer recommendations, and installation method.

B. Hydronic Piping and Hydronic Specialties Product Data

1) For condenser water piping and fittings, with specification and piping Schedule. Indicate application, material, sizes, class or type, manufacturer, rating, pipe fittings, joining method, and accessories for application.

2) For specialties, not limited to, but including strainers, flexible connectors, flow measuring devices, gages, thermometers and test wells.

3) For valves of all types. Include pressure rating, flow and pressure drop curves based on manufacturer’s testing for calibrated balancing valves and flow control valves.

4) For pipe stands, thermal-hanger shield inserts, and hangers and other piping system supports.

C. Hydronic Piping Insulation Product Data

1) For each type of insulation product.

2) Include thermal conductivity, water-vapor permeance thickness, flame spread, smoke developed index, and jackets, both factory and field installed.

D. Water Treatment Product Data

1) Include rated capacities, operating characteristics, and furnished specialties for any new appurtenances recommended by the Chemical Specialist.

2) Chemical material safety data sheets of the chemicals proposed by the Chemical Specialist, for pre-treatment and permanent treatment.

E. Electrical Equipment and Materials Product Data

1) For low voltage power conductors and cables, disconnect switch per NEC Article 430, circuit breaker, any accessory or component recommended by the manufacturer for electrical installation.

2) For raceways, wireways and fittings, enclosures, or cabinets.

3) For VFD (Variable Frequency Drive). Include rated capacities, operating characteristics, electrical characteristics, and furnished specialties and accessories.

4) For condenser piping Heat Tracing System.

a. Include full item description and optional features and accessories. Include model numbers.

b. Include standard compliance.

c. Include rated capacity, length of cable, cable spacing, electrical power requirements, controls, and enclosures.

F. Cooling Tower Shop Drawings

1) Manufacturer's drawings of assembled cooling towers, control panels, sections, details, and elevations.

2) Assembled unit dimensions.

3) Diagram showing each separate piece requiring field assembly.

4) Shipped sub-assembly dimensions and weights for field assembly.

5) Assembled unit weight without water.

6) Operating weight and load distribution.

7) Unit vibration isolation and seismic controls.

8) Required clearances for maintenance and operation.

9) Sizes and dimensioned locations of piping and wiring connections.

10) Diagrams for power, signal, and control wiring.

11) Drawing with manufacturer recommended connection details for all the cooling tower piping connections, inlet, outlet, make-up water, overflow drain, etc. Details will show appurtenances like temperature and pressure gages, isolation valves, flexible connections, flanges, etc.

G. Hydronic Piping Insulation Shop Drawings

1) Include plans, elevations, sections, details, and attachment to other work.

2) Detail application of protective shields, saddles, and inserts.

3) Detail attachment and covering of heat tracing inside insulation.

4) Detail insulation application at elbows, fittings, flanges, valves, and specialties.

5) Detail removable insulation at piping specialties, equipment connections, and access panels.

6) Detail application of field-applied jackets.

H. Variable Frequency Drive Shop Drawings

1) Indicate front and side views of VFD enclosure with overall dimensions. Include dimensioned plans, elevations, sections, mounting and attachment details, with required clearances and service space around equipment. Include conduit entrance locations and requirements, electrical characteristics including voltage, frame size and trip ratings. Show installed devices and equipment features. Include installed unit type and details, nameplate legend, and short circuit rating.

2) Wiring Diagrams: Show Power, signal, and control wiring for VFDs. Provide schematic diagrams for same.

I. Heat Tracing for condenser piping Shop Drawings:

1) Include plans, elevations, sections, and attachment details.

2) Include diagrams for power, signal, and control wiring.

J. Cooling Tower Supports Delegated Design:

1) Contractor shall procure structural engineering design indicated to comply with performance requirements and design criteria for the cooling tower support structure, including analysis data signed and sealed by the qualified professional engineer responsible for their preparation.

K. DDC System Delegated Design

1) Contractor shall procure controls, diagrams, programming design, testing and construction services to interface tower components into the existing Building Automation System (BAS).

2) Contractor shall coordinate all controls work with BAS Proprietary System Representative Steve Ingram of Mid-Atlantic Controls Corporation, 8511 Oakview Avenue, Richmond, Va., 23228.

L. Water Treatment Delegated Design

1) Contractor shall procure Water Treatment specialty services required to reinstate chemical treatment upon construction completion.

2) Contractor shall coordinate this work with Petersburg Facility’s existing Chemical Treatment Contractor (Point of contact being Mr. Allen Martin, Area Sales Manager, Aee Company-Member of the Vincit Group, www.vincitgroup.com, mobile 804-840-5393, or, allen.martin@vincitgroup.com).

M. Construction Delegated Engineering Services

1) Contractor shall procure quality assurance professional engineering services for evaluation of all submittals for code compliance, annotation, approval and/or rejection of shop drawings, product data, inspections, test reports, and similar data required by this contract. All documents noted shall show engineer review & approval.

2) Contractor shall procure Engineer Sealed Record Drawings. Contractor shall maintain a “red line” construction drawing set to show any cooling tower system changes from the original installation in the project drawing set. Changes are possible due to current tower or components’ manufacturer installation recommendations, and missing shop drawings’ details and/or delegated design drawings.

The “red-lined” drawings shall be converted into CAD Record Drawings. The Final Record Set shall portray all designs and all completed construction, including mechanical, electrical, controls, chemical treatment, and structural work.

N. Hydronic Piping Delegated Design

1) Design calculations and detailed fabrication and assembly of pipe anchors and alignment guides, and hangers and supports for pipes.

2) As-Built piping diagram, with connections detailed to match existing construction unless superseded by new manufacturer recommendations or updated codes.

O. Electrical Systems’ Delegated Design

1) VFD- Contractor shall procure qualified engineering services for design of wiring and auxiliary components, including, but not limited to, controls interfacing, enclosures, transformers, filters, fuses, motor protection, circuit breakers, switches, indicating lights, engraved nameplates, signal transducers, and/or similar required for operation, and interconnection and test services. The manufacturer of the driven equipment shall approve the combination of controller and motor.

2) Heat Tracing- Contractor shall procure qualified engineering services for design of condenser piping heat tracing system, including heater cable failure alarm, using outdoor piping thermostats, and voltage detectors, with alarm contact for remote monitoring by the Owner’s BAS. Provide design with written description of same.

1.4 INFORMATIONAL SUBMITTALS

A. Cooling Tower Seismic Qualification Data:

Certificates for accessories and VFD, from manufacturer.

1) Basis for Certification: Indicate whether withstand certification is based on actual test of assembled components or on calculation.

2) Dimensioned Outline Drawings of Equipment Unit:

identify center of gravity, locate, and describe mounting and anchorage provisions.

3) Detailed description of equipment anchorage devices on which the certification is based and installation requirements.

B. Product Certificates: For Cooling Tower and VFD, in compliance with the "Quality Assurance" Article.

C. Field Test Reports, Cooling Tower and VFD: Include startup service reports.

D. Source quality control reports, Cooling Tower and

VFD.

E. Field quality-control reports, Cooling Tower, VFD, Heat Tracing Cables, and power conductors and cables.

F. Sample Warranty – For special warranty for Cooling Tower, Heat Tracing Cables, and VFD in compliance with the “Warranty” Article.

1.5 CLOSEOUT SUBMITTALS

A. Operation and Maintenance (O&M) Manuals, cooling tower: Including wiring diagrams, approved shop drawings, inspection procedures, emergency and maintenance operation manuals (In paper and electronic pdf, two sets).

B. Operation and Maintenance (O&M) Manuals, VFD:

Including emergency, operation, and maintenance.

Include manufacturer’s written instructions for testing and adjusting breaker and motor circuit protector trip settings, instructions for setting relays, instructions for setting controls, and status and alarm points, and written instruction for testing, adjusting, and reprogramming controls.

C. Operation and Maintenance (O&M) Manuals, Heat Tracing: For electric heating cables. Include all aspects of system operation and troubleshooting and maintenance procedures, procedures for emergencies, piping isometrics drawing, wiring diagram of all circuits, written description of system design, control logic and sequence of operations.

D. Record Drawings: Provide two (2) construction project Engineer Sealed Drawing Sets (In paper and electronic AutoCad/pdf CD, drawings, no smaller than 22”X34”, or ANSI size “D”).

E. Record Product Data: Show engineer approved project submittals (In paper and electronic pdf).

F. Engineer approved Testing, Start Up and Balancing Reports (In paper and electronic pdf).

G. All Warranties (In paper and electronic pdf).

H. Contractor Installation Certification that the cooling towers have been installed, adjusted and tested, and fully conform to the requirements of the construction contract (In paper and electronic pdf).

1.6 QUALITY ASSURANCE

A. CTI Certification, Cooling Tower: Thermal Performance according to CTI STD 201RS – Certification Standard for Commercial Water-Cooling Towers’ Thermal Performance.

The tower shall bear the CTI certification label, and shall be listed in the CTI directory of certified towers.

B. ASHRAE 90.1, Cooling Tower: Compliant.

C. ISO 9001, cooling tower: Manufactured under closely controlled conditions using standardized parts to ensure each unit is built precisely to the same high-quality design construction standards. The design, manufacture, and business processes shall be ISO 9001:2015 compliant.

D. Testing Agency Qualifications, VFD: Accredited by NETA, currently certified by NETA to supervise on-site testing.

E. Manufacturer Qualifications, Heat Tracing: Ten Years’ experience in design, engineering, manufacture and support of designed system and components.

F. Product Requirements, Heat Tracing: UL Listed, including UL Listed thermostat and Controls.

G. Electrical Components, Devices, and Accessories: Shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application. Comply with NFPA 70.

H. Piping Insulation Installer Qualifications: Skilled mechanics who have successfully completed an apprenticeship program or another craft-training program certified by the Department of Labor, Bureau of Apprenticeship and Training.

I. Piping Insulation Surface-Burning Characteristics: For insulation and related materials, as determined by testing identical products in accordance with ASTM E84 by a testing agency acceptable to authorities having jurisdiction. Factory label insulation and jacket and associated materials with appropriate marking of applicable testing agency. Insulation installed outdoors shall have a flame-spread index of 75 or less and smoke-developed index of 150 or less.

1.7 WARRANTY

A. Special Warranty, Cooling Tower Structure: Manufacturer agrees to repair or replace the following components of cooling towers that fail in materials or workmanship within specified warranty period:

1) All components of cooling tower, including supports.

2) Fan assembly including fan, drive, and motor.

3) Provide additional two years of warranty, for a total of 7 years of warranty, for fan motors.

4) Warranty Period, Tower Structure: Five years from date of Substantial Completion.

B. Special Warranty, VFD: Manufacturer agrees to repair or replace VFD that fails in materials or workmanship within specified warranty period.

1) Warranty Period,VFD: Five years from date of

Substantial Completion.

C. Special Warranty, Heat Tracing System: Manufacturer agrees to repair or replace electric heating cable that fails in materials or workmanship within specified warranty period.

1) Warranty Period, Heat Tracing: Three years from date of Substantial Completion.

CONSTRUCTION PRODUCTS CONTRACT REQUIREMENTS

2.1 MANUFACTURERS

A. Contractor shall provide BAC S3E-1222-12Q, or equal.

2.2 PERFORMANCE REQUIREMENTS

A. Delegated Design: Engage a qualified professional structural engineer to field verify existing conditions of the cooling tower foundation and provide a certified design for support and attachment of the new equipment.

Engineer shall submit report with assessment of field conditions and certified design for any necessary foundation modification, or supports and attachment details, bearing the seal of the licensed Professional Structural Engineer.

B. Structural Performance: Cooling tower and support structure shall withstand the effects of loads and stresses within limits and under conditions indicated according to ASCE/SEI 7 and the IBC edition 2015.

C. Seismic Performance: Cooling towers shall withstand the effects of earthquake motions determined according to

ASCE/SEI 7.

1) The term "withstand" means "the unit will remain in place without separation of any parts from the device when subjected to the seismic forces specified and the unit will be fully operational after the seismic event."

D. EFFICIENCY: The cooling towers will comply with energy efficiency requirements by ASHRAE 90.1-2016.

E. PERFORMANCE CERTIFIED CRITERIA: The cooling tower(s) shall be warranted by the manufacturer to cool project 1800 GPM of water from 95 ºF to 85 ºF at 81.46 ºF entering wet bulb temperature (Nominal tower rating: 2100 USGPM of water cooled from 95 ºF to 85 ºF at 80 ºF entering wet bulb temperature), stating fan motor HP.

This Manufacturer Certification shall be procured at the time of submittal.

F. SOUND LEVELS: The sound levels at 5 ft. and 50 ft. in any direction from the tower shall not exceed 79 dB and 67 dB, A-wgtd, respectively.

2.3 COOLING TOWER LIMITS

A. Overall tower dimensions shall not exceed approximately 21’-6 ½” ft. long X 11’-9 ¾” ft. wide X 19’-1 1/8” ft.

high. The total connected fan horsepower shall not exceed

50 HP.

2.4 COOLING TOWER CORROSION RESISTANT CONSTRUCTION

A. Unless otherwise noted, all steel basin panels and structural members shall be constructed of heavy-gauge G- 235 hot-dip galvanized steel with all edges given a protective coating of zinc-rich compound.

2.5 COOLING TOWER CONSTRUCTION DETAILS

A. Structure: The cooling tower shall be constructed with a sturdy structural frame designed to transmit all wind, seismic and mechanical loads to the equipment anchorage.

The frame shall be constructed of heavy-gauge steel angles and channels. Structure designed in accordance with the IBC and ASCE/SEI.7.

B. Casing Panels: Casing panels shall be constructed of corrosion and UV-resistant fiberglass reinforced polyester (FRP) to minimize maintenance requirements and prolong equipment life. Casing panels shall not provide structural support, since the sturdy, structural frame of the tower transfers all loads to the equipment anchorage.

C. Cold Water Basin: The cold water basin shall be constructed of heavy-gauge steel panels and structural members. Basin shall include a depressed center section with drain/clean-out connection. The basin area under the fill shall be sloped toward the depressed center section to facilitate cleaning. Standard basin accessories shall include a corrosion resistant make-up valve with large diameter plastic float for easy adjustment of the operating water level, removable anti-vortexing device to prevent air entrainment, and large area lift out strainers with perforated openings sized smaller than the water distribution system nozzles.

D. Water Outlet: The water outlet connection shall be beveled for welding and grooved for mechanical coupling or bolt hole circle designed to accept an ASME Class 150 flat face flange. The outlet shall be provided with large-area lift out strainers with perforated openings sized smaller than the water distribution nozzles and an anti-vortexing device to prevent air entrainment. The strainer and vortex device shall be constructed of the same materials as the cold water basin to prevent dissimilar metal corrosion.

E. Water Distribution System: The hot water distribution basins shall be the open and gravity fed for easy cleaning, and constructed of heavy-gauge, G-235 hot-dip galvanized steel. The basins must be accessible from outside the unit and serviceable during tower operation.

Basin weirs and plastic metering orifices shall be provided to assure even distribution of the water over the fill. Weir dams shall accommodate a flow range of 50% to 100% of the design flow rate. Lift-off distribution covers shall be constructed of heavy-gauge G-235 hot-dip galvanized steel and designed to withstand a 50 psf live load or 200 pound concentrated load. Gravity flow nozzles shall be snap-in type for easy removal. Should pressurized nozzles be used, they shall utilize grommets, which ensure easy removal.

F. Inlet Connection: Each tower cell shall be furnished with a single water inlet connection complete with the means to automatically balance flow rates to the hot water basins.

2.6 COOLING TOWER STRUCTURE COMPONENTS

A. Fan(s):

1) Fans shall be Low Sound Fans, with sound levels at 5 feet and 50 feet in any direction from the tower not exceeding 79 Db(A) and 67 Db(A) respectively.

2) Fans shall be heavy-duty, axial flow with aluminum alloy blades selected to provide optimum cooling tower thermal performance with minimal sound levels.

Air shall discharge through a fan cylinder designed for streamlined air entry and minimum tip clearance for maximum fan efficiency.

3) The top of the fan cylinder shall be equipped with a conical, non-sagging removable fan guard, in compliance with ANSI A10.18.

A. Bearings: Fan(s) and shaft(s) shall be supported by heavy-duty, self-aligning, grease-packed ball bearings with moisture proof seals and integral slinger collars, designed for a minimum L10 life of 80,000 hours.

B. Fan Drive: The fan(s) shall be driven by “Baltidrive Power

Train”, a specially designed powerband and two cast aluminum sheaves located at minimal shaft centerline distances to maximize belt life.

C. Fan Motor

1) Fan motor(s) shall be Totally Enclosed, Air Over (TEAO), 1 Speed, 1 winding, Premium Efficiency (Inverter duty), reversible, squirrel cage induction motor, ball bearing type designed specifically for cooling tower service.

2) The fan motor shall be furnished with special moisture protection on windings, shafts and bearings.

3) Fan motors shall be designed per NEMA Standard MG1, Section IV Part 31.

4) Space Heater shall be provided in fan motor(s) and wired according to the motor nameplate.

D. Fill and Drift Eliminators

1) The fill and integral drift eliminators shall be formed from self-extinguishing (per ASTM-568) polyvinyl chloride (PVC) having a flame spread rating of 5 per ASTM E84 and shall be impervious to rot, decay, fungus and biological attack.

2) The fill shall be suitable for entering water temperatures up to and including 130°F.

3) The fill shall be manufactured, tested and rated by the cooling tower manufacturer and shall be elevated above the cold water floor to facilitate cleaning.

E. Air Inlet Louvers: Air Inlet louvers shall be separate from the fill and removable to provide easy access for inspection of the air/water interface at the louver face.

Louvers shall prevent water splash out during fan cycling and be constructed of maintenance free, corrosion and UV resistant, fiberglass reinforced polyester (FRP).

F. Plenum Access: Two hinged access doors shall be provided.

G. Basin Heater(s)

1) The cooling tower cold water basin shall be provided with electric heater(s) to prevent freezing in low ambient conditions.

2) The heater(s) shall be selected to maintain 40°F basin water temperatures at 0°F ambient.

3) The heater(s) shall be 480 V/ 3 phase/ 60 Hz electric and shall be provided with low water cutout and thermostat.

H. Basin Water Level Control

1) The cooling tower manufacturer shall provide an electric water level control (EWLC) system consisting of water level sensing and control units in quantities, locations as indicated on the drawings.

2) Each water level sensing and control unit shall be hermetically sealed.

3) Each water sensing and control unit shall consist of solid state controls, including all necessary relays and contacts to achieve the specified sequence of operation;

status code L. E. D which illuminates to indicate status:

stainless steel water level sensing electrodes with brass holder; Schedule 40 PVC standpipe assembly with vent holes, and all necessary stainless steel mounting hardware.

4) Provide PVC union directly below the control enclosure to facilitate the removal and access of electrodes and control enclosure.

5) The number and position of water level sensing electrodes shall be provided to sense the following: high water level, low water level, high water alarm level, low water alarm level, and heater safety cutout.

I. Vibration Cutout Switch and alarm contacts

1) Fans shall include a vibration cutout switch located in a protected position to effectively monitor fan vibration.

It shall stop fan motor under excessive fan vibration.

2) The switch shall be interfaced with the BMS control system to provide an alarm in the event the fans stop due to excessive vibration.

3) The mechanical vibration cutout switch will be guaranteed to trip at a point so as not to cause damage to the cooling tower. To ensure this, the trip point may be set in a frequency range of 0 to 3,600 RPM and a trip point of 0.2 to 2.0 g’s.

4) The cooling tower shall ship from the factory with the fan motor and vibration cutout switch wired to terminal blocks encased in a Type 304 stainless steel NEMA 3R enclosure, mounted on the outside of the tower. No casing penetrations shall be permitted in the field.

J. Basin Sweeper Piping: The cold water basin of the cooling tower shall be equipped with PVC sump sweeper piping with plastic eductor nozzles.

K. Air intake Option: Provide removable hot dip galvanized steel 1"x1" mesh air intake screens.

L. Ladder: An aluminum ladder (with galvanized steel safety cage) shall be provided for access to the fan deck. Access door or service platforms are not acceptable.

M. Handrails: 1-1/4" galvanized steel pipe handrail shall be provided around the perimeter of the cooling tower cells.

The handrails shall be provided with knee and toe rails and shall conform to the requirements of OSHA applicable at the time of shipment.

N. Access Door Platform: A galvanized steel platform and aluminum ladder to grade shall be provided at all access doors to access the plenum section of the cooling tower.

All working surfaces shall be able to withstand 50 psf live load or 200 pound concentrated load.

O. Platform to Access External Motor (available on gear drives equipped with TEFC external motors only): A galvanized steel platform and ladder to grade shall be provided for access to the external fan motor. All working surfaces shall be able to withstand 50 psf live load or 200 pound concentrated load.

P. Internal Walkway: An internal walkway shall be provided in the plenum section to provide for inspection and maintenance. All working surfaces shall be able to withstand 50 psf live load or 200 pound concentrated load.

Other components of the cooling tower, i.e. basin and fill/drift eliminators, shall not be considered an internal working surface. Cooling tower manufacturers that promote these surfaces to be used as a working platform shall provide a two-year extended warranty to the Owner to repair any damage to these surfaces caused during routine maintenance.

Q. Internal Platform: An internal platform shall be provided in the plenum section to provide for inspection and maintenance. All working surfaces shall be able to withstand 50 psf live load or 200 pound concentrated load.

Other components of the cooling tower, i.e. basin floor and fill/drift eliminators, shall not be considered an internal working surface. Cooling tower manufacturers that promote these surfaces to be used as a working platform shall provide a two-year extended warranty to the Owner to repair any damage to these surfaces caused during routine maintenance.

R. Louver Face Platform: Easy access to the hot water basins for inspection and maintenance of the basins, even during tower operation, shall be provided by louver face platforms. Fan deck ladders and handrails, which add to the overall height of the tower, are not acceptable.

S. Mechanical Equipment Removal Davit: Provide the mechanical equipment removal option to aid in motor removal or gear drive. The davit shall be portable from cell to cell and the heaviest piece shall weigh 60 lbs. The davit shall lower the motor or gear drive from the mechanical equipment supports down to an internal metal working surface.

2.7 COOLING TOWER STRUCTURE ASSOCIATED ACCESSORIES:

A. Plastic Pipe: PVC plastic pipe, ASTM D 1785. Supply, Return, and Make-Up piping shall be schedule 80. Drain shall be schedule 40 DWV.

B. Plastic Pipe Fittings and Joining Materials: PVC Plastic Pipe Fittings, ASTM D 2466 for Schedule 40 pipe; ASTM D 2467 for Schedule 80 pipe. Plastic, Pipe-Flange Gasket, Bolts, and Nuts: Type and materials recommended by piping system manufacturer. Solvent cement for PVC piping, ASTM F 493.

C. Plastic to Metal Transition Fittings: One piece fitting with one threaded brass or copper insert and one solvent cement joint end of material and wall thickness to match plastic pipe material.

D. Plastic to Metal Transition Unions: Brass or copper end, solvent-cement joint end of material and wall thickness to match plastic pipe material, rubber gasket, and threaded union.

E. Dielectric Fittings: Assemble copper alloy and ferrous materials with separating nonconductive insulating materials. Dielectric Unions and Flanges per Standard

ASSE 1079.

F. Balancing Valves: Heavy-duty butterfly valves shall be provided at the hot water inlet connections. These valves shall include cast iron bodies, elastomer seat and steel operating stems. There shall be a locking handle to maintain the valve setting in any position. Wafer type field supplied spool piece is required between the inlet connection and the valve.

G. Condenser Piping Insulation: All pipe sizes, condenser water supply and return, Mineral-Fiber, Preformed Pipe Insulation, ASTM C547,Type 1, 2 inches thick, with factory applied ASJ jacket.

H. Condenser Piping ASJ Jacket: Factory applied with flame-retardant vapor-barrier facing, White, kraft-paper, fiberglass-reinforced serim with aluminum-foil backing, complying with ASTM C1136, Type 1.

I. Condenser Piping Field Applied PVC Jacket: High-impact resistant, UV-resistant PVC complying with ASTM D1784, Class 16354-C, with vapor retarder, 0.030” thickness, roll stock ready for shop or field cutting and forming.

J. Raceways

1) All wire shall be run in accordance with code in

Intermediate Metal Conduit (IMC)per ANSI C80.6, or Electrical Metallic Tubing (EMT)per ANSI C80.3.

2) Conduit exposed to the weather or other damp/wet location shall be rigid, threaded, galvanized, heavy wall type.

3) Conduit size shall be ¾” minimum.

4) Liquid tight metal conduit shall be used for all connections to motors and other equipment subject to vibration and in areas subject to moisture.

5) Fittings for conduits(including all Types and Flexible and Liquid Tight), EMT, and Cable: NEMA FB 1; listed for type and size raceway with which used, and for application and environment in which installed.

K. Conductors

1) Copper conductors only; Aluminum conductors are not acceptable. Comply with NEMA WC 70.

2) Conductor Insulation: Comply with NEMA WC for Types

THHN-THWN.

3) Color code conductors in accordance with NEC and Local

Codes.

L. Condenser Piping Heat Tracing

1) Heat Trace- Plastic Insulated Series Resistance

Heating Cables, Self-Regulating Parallel Resistance Heating Cables, or Constant Wattage Resistance Heating Cables.

2) Electrical Protection- Provide ground fault breakers or other ground fault protection with a designated ground fault trip level.

3) Controls for heat tracing cables

a. Pipe mounting thermostats for freeze protection shall have a remote bulb unit with adjustable temperature range from 34 degrees Fahrenheit to 50 degrees Fahrenheit.

b. The thermostat shall be snap action, open-on-rise, single pole switch with minimum current rating adequate for the connected cable.

c. The thermostat shall be remote bulb on capillary, resistance temperature device, or thermistor for direct sensing of pipe wall temperature.

d. The control enclosure shall be corrosion resistant and water proof.

e. Outdoor air thermostat control shall prevent operation when outside air is above 40 degrees Farenheit (Adjustable).

f. Heater failure alarm, using outdoor piping thermostats, and voltage detectors, with alarm contact for the BAS.

EXECUTION CONTRACT REQUIREMENTS

1.1 INSTALLATION

A. Cooling Tower

1) Install cooling tower in accordance with manufacturer’s written instructions.

2) Ground all equipment per the NEC.

3) Comply with NECA recommendations for all electrical equipment installations.

4) Maintain recommended clearances for service and maintenance.

5) Install support and anchorage systems in accordance with the approved structural engineering design.

6) Install nameplate for each electrical power connection indicating electrical equipment designation and circuit number feeding connection.

7) Install label at each termination indicating control equipment designation serving cooling tower and the I/O point designation for each control connection.

B. Electrical Wiring and Raceways

1) Install wiring in raceways in accordance with the NEC.

2) Install a separate green insulated equipment grounding conductor with the circuit conductors. Raceways shall be mechanically and electrically continuous and shall be bonded at all points to the insulated equipment grounding conductor in accordance with applicable provisions of NEC Article 250.

3) Run power and control wiring and cabling in dedicated conduits. Power wiring shall not be run in the same conduit with control wiring.

4) Use Flexible metallic conduit only for short motor connections, or where subject to vibration.

5) Color Code conductors in accordance with NEC and local codes.

6) Comply with all applicable NECA Standards for installation of hangers, supports and receways for electrical equipment and systems.

7) Make electrical connections in accordance with Article 110 of the NEC.

C. VFD

1) Install VFD in accordance with the NEC and as recommended by the manufacturer.

2) Install VFD power and signal wiring in appropriate metallic electrical conduit and raceways.

3) Label VFD enclosure identifying motor served, nameplate HP, full load amperes, code letter, service factor, and voltage/phase rating.

D. Hydronic Piping

1) Install hydronic piping shown in the Project drawings.

2) Install piping allowing for service, maintenance, and application of heat trace and insulation.

3) Install hydronic piping at a uniform grade of 0.2 percent upward in the direction of flow, or roughly at a uniform slope of 1” per 40’ of pipe upward in the direction of flow.

4) Provide all necessary fittings, offsets, and pipe runs based on field measurements.

5) Install fittings for changes in direction and branch connections.

6) Reduce pipe sizes using eccentric reducer fitting installed with level side up.

7) Support piping securely.

8) Locate and orient valves to permit proper operation and access for maintenance. Install per manufacturer recommendations.

9) Provide valves and unions or flanges where needed to permit disconnections of each piece of equipment for repairs.

10) Make connections to equipment with shut-off valves on supply and balance valves on returns.

11) Install unions in piping 2” and smaller, and flanges in piping greater than 2”.

12) Make connections between dissimilar metals with suitable dielectric fittings, using dielectric flange kits for piping greater than 2”. Install shutoff valve immediately upstream of each dielectric fitting.

13) Assure piping installation has pressure and temperature test provisions.

14) Provide vents at high piping points and drain valves at low piping points.

15) Identify all piping systems, valves, and equipment.

a. All valves shall have their normal (operational) position identified, such as “Normally Open” or “Normally Closed”.

b. Identify in accordance with ANSI Standard A13.1.

E. Heat Tracing

1) Coordinate heat tracing installation with insulation.

2) Install heat tracing in accordance with the manufacturer’s recommendations.

3) End installation of heat tracing and new insulation at a location 6”-12” into the building.

F. Insulation

1) Coordinate insulation installation with testing, inspection, and acceptance of pipe and heat tracing installation.

2) Insulate hydronic piping after verification showing inspection and piping testing, including leak, pressure, and heat tracing testing, is complete and accepted.

3) Install specified PVC jacket over the factory applied jacket.

4) Insulate fittings, joints, and valves with like material and thickness as adjoining pipe.

5) Provide removable insulation sections to cover parts of equipment, which must be opened periodically for maintenance; including covers, fasteners, flanges, and accessories.

G. DDC Controls

1) Perform Controls work with the existing BAS Contractor serving the institution.

2) Interface noted tower components with existing BAS Controls.

3) Provide all materials, equipment and technical labor necessary for a complete and operating control system utilizing direct digital controls to achieve design intent and sequence of operations in the drawings and as described within this SOW.

4) Provide all hardware and software, final sequence of operations, points list, and control diagrams required to allow desired communication and full functionality between tower components noted and the existing BAS.

5) Provide a system demonstration validating all aspects of the control work.

H. Chemical Water Treatment

1) Perform water treatment associated work with the existing Chemical Specialist Company serving the institution.

2) Perform inspection, and testing as necessary, of existing…