DDG(X) WP3_Amendment 0003_Spec Section 22 25 00.pdf

DDG(X) LBTS WP3: E-Campus 1733372

SECTION 23 25 00

CHEMICAL TREATMENT OF WATER FOR MECHANICAL SYSTEMS

05/21

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)

ASME B40.100 (2022) Pressure Gauges and Gauge Attachments

ASTM INTERNATIONAL (ASTM)

ASTM D596 (2001; R 2018) Standard Guide for Reporting Results of Analysis of Water

ASTM D2688 (2015; E 2016) Standard Test Method for Corrosivity of Water in the Absence of Heat Transfer (Weight Loss Methods)

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA MG 1 (2021) Motors and Generators

1.2 SUMMARY

This section covers the provisions and installation procedures necessary for a complete and totally functional water system(s) chemical treatment.

Provide and install the system with all necessary System Components, Accessories, Piping Components, and Supplemental Components/Services.

Cooling Tower system is an open, evaporative heat exchange, process cooling water system, subject to evaporation, drift, and regular blowdown. The system will have regular monitoring of water chemistry and automatic dispensing.

The proposed chemical treatment system must not include any materials or chemicals which are not approved by the NSWCPD, including both the presence of the chemical and the ability to discharge to the sanitary sewer system.

Provide pre-fabricated, insulated enclosure at chemical treatment tanks with lockable double door entrance.

1.3 GENERAL REQUIREMENTS

1.3.1 Structural Performance

Pre-fabricated insulated enclosure must be structurally sound and capable of withstanding the effects of self-weight gravity loads, and the loads listed in the following paragraph. Submit structural calculations signed

SECTION 23 25 00 Page 1

2 July 20252 July 2025 and sealed by a registered professional engineer.

1.3.1.1 Design Loads

Design and construct to the requirements of UFC 3-301-01, Structural Engineering.

a. Use Risk Category II.

b. Superimposed Dead Load

Include an additional dead load of 10 psf to roof loads, other than the weight of the enclosure. Wall framing must be capable of supporting an additional point load of 25 lbs at wall face to account for shelves or equipment.

c. Wind Loads

Wind loads, including components and cladding and main wind force resisting systems, must be in accordance with UFC 3-301-01. Use Exposure Category D.

d. Wind Uplift Resistance

Design for wind uplift resistance in accordance with UFC 3-301-01.

e. Deflection Limits

Deflection limits must be in accordance with UFC 3-301-01.

f. Thermal Movements

Provide cladding systems that allow for thermal movements resulting from the maximum change (range) in ambient and surface temperatures, 120 degrees F ambient and 180 degrees F material surfaces, preventing buckling, opening of joints, overstressing of components, failure of joint sealants, failure of connections, and other detrimental effects. Base engineering calculations on the surface temperatures of materials due to both solar heat gain and nighttime-sky heat loss.

1.4 SUBMITTALS

Government approval is required for submittals with a "G" classification.

Submittals not having a "G" classification are for Contractor Quality Control approval. Submit the following in accordance with Section 01 33 00

SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Prefabricated Insulated Enclosure; G

SD-03 Product Data

Water Treatment System; G

Water Analysis; G

Spare Parts

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2 July 2025

Field Instructions

Tests; G

Training Course; G

Prefabricated Insulated Enclosure; G

SD-04 Samples manufacturer's Color Charts And Chips; G

SD-05 Design Data

Structural Calculations; G

SD-06 Test Reports

Cooling Water QA Tests

SD-10 Operation and Maintenance Data

Water Treatment System

SD-11 Closeout Submittals

Prefabricated Insulated Enclosure Warranty

1.5 MAINTENANCE MATERIAL SUBMITTALS

Submit spare parts data for each different item of material and equipment specified, after approval of the detail drawings, not later than 2 months prior to the date of beneficial occupancy. Include a complete list of parts and supplies, with source of supply, with the data.

1.6 QUALITY CONTROL

1.6.1 Safety

Ensure moving parts, parts that produce high operating temperature, parts which may be electrically energized, and parts that may be a hazard to operating personnel are insulated, fully enclosed, guarded, or fitted with other types of safety devices. Install safety devices so that proper operation of equipment is not impaired.

1.6.2 Drawings

Because of the small scale of the drawings, it is not possible to indicate all offsets, fittings, and accessories that may be required. Carefully investigate the plumbing, fire protection, electrical, structural and finish conditions that would affect the work to be performed and arrange such work accordingly, furnishing required offsets, fittings, and accessories to meet such conditions.

1.7 DELIVERY, STORAGE, AND HANDLING

Protect all equipment delivered and placed in storage from the weather, humidity and temperature variations, dirt and dust, or other contaminants.

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1.8 PREFABRICATED INSULATED ENCLOSURE WARRANTY

Furnish manufacturer's no-dollar-limit warranty for the prefabricated insulated enclosure system. The warranty period is to be no less than 10 years from the date of acceptance of the work and be issued directly to the Government. The warranty must provide that if within the warranty period, the enclosure system shows evidence of deterioration resulting from defective materials or workmanship, correcting of any defects is the responsibility of the metal building system manufacturer.

Repairs that become necessary because of defective materials and workmanship while metal building system is under warranty are to be performed within 32 hours after notification, unless additional time is approved by the Contracting Officer. Failure to perform repairs within 32 hours of notification will constitute grounds for having emergency repairs performed by others and will not void the warranty.

PART 2 PRODUCTS

2.1 STANDARD PRODUCTS

a. Provide materials and equipment which are standard products of a manufacturer regularly engaged in the manufacturing of such products, that are of a similar material, design and workmanship and that have been in satisfactory commercial or industrial use for two years' prior to bid opening.

b. Include in the two-year use all applications of equipment and materials under similar circumstances and of similar size. Ensure the two years' experience has been satisfactorily completed by a product which has been sold or is offered for sale on the commercial market through advertisements, manufacturer's catalogs, or brochures.

Products having less than a two-year field service record are acceptable if a certified record of satisfactory field operation, for not less than 6000 hours exclusive of the manufacturer's factory tests, can be shown.

c. All products are required to be supported by a service organization.

Submit a certified list of qualified permanent service organizations for support of the equipment, including their addresses and qualifications. These service organizations are required to be reasonably convenient to the equipment installation and able to render satisfactory service to the equipment on a regular and emergency basis during the warranty period of the contract.

d. The selected service organization provides the chemicals required, the concentrations required, and the water treatment equipment sizes and flow rates required for the operating conditions described in Paragraph 1.2. The company provides all chemicals required for the cooling water systems and fills the systems with chemicals to the levels specified. The chemical is required to meet the requirements of this specification as well as the recommendations from the manufacturers of the cooling tower. Acid treatment chemicals are not allowed to be used.

2.1.1 Water Analysis

Conditions of make-up water to be supplied to the cooling tower and

SECTION 23 25 00 Page 4 process cooling water systems reported in accordance with ASTM D596 are as follows:

Date of Sample _____

Temperature _____ degrees F

Silica (SiO 2) _____ ppm

Insoluble _____ ppm

Iron, total (Fe) _____ ppm

Aluminum (Al) _____ ppm

Calcium (Ca) _____ ppm

Magnesium (Mg) _____ ppm

Carbonate (HCO 3) _____ ppm

Sulfate (SO 4) _____ ppm

Chloride (Cl) _____ ppm

Nitrate (NO 3) _____ ppm

Turbidity _____ ntu pH _____ ppm

Residual Chlorine _____ ppm

Total Alkalinity _____ ppm

Non-Carbonate Hardness _____ ppm

Total Hardness _____ ppm

Dissolved Solids _____ ppm

Conductivity _____ Micromho/cm

Ensure that the conditions are compatible with Philadelphia Water Company supply for Building 77H at NSWCPD.

2.2 EQUIPMENT

2.2.1 Nameplates

Provide a nameplate for each major component of equipment that includes the manufacturer's name, address, type or style, and catalog or serial number securely attached to the item of equipment. Provide nameplates for:

a. Pump(s)

SECTION 23 25 00 Page 5

b. Pump Motor(s)

c. Water Treatment Controller(s)

2.2.2 Electrical Work

Ensure all electrical equipment, motors, motor efficiencies, and wiring complies with Section 26 20 00 INTERIOR DISTRIBUTION SYSTEM. Provide electrical motor driven equipment specified complete with motors, motor starters, and controls. Provide electrical characteristics and enclosure types as shown, and unless otherwise indicated, provide all motors of 1 horsepower and above with open, drip-proof, or totally enclosed fan cooled enclosures, high efficiency type. Perform field wiring in accordance with manufacturer's instructions. Each motor is required to conform to NEMA MG 1 and be of sufficient size to drive the equipment at the specified capacity without exceeding the nameplate rating of the motor.

Provide continuous duty motors with the enclosure specified. Provide motor starters complete with thermal overload protection and other appurtenances necessary for the motor control indicated. Furnish motors with a magnetic across-the-line or reduced voltage type starter as required by the manufacturer. Furnish motor starters with NEMA 1 enclosures. Provide manual or automatic control and protective or signal devices required for the operation specified and any control wiring required for controls and devices specified, but not shown.

2.2.3 Gauges

Provide gauges that conform to ASME B40.100 , Class 1, 2, or 3, Style X, Type I or III as required, 4-1/2 inches in diameter with phenolic or metal case.

2.3 COMPONENTS

2.3.1 Cooling Water Treatment Systems

The use of chemical-treatment products containing hexavalent chromium (Cr) is prohibited. Treat the water to be used in the cooling water systems to maintain the conditions recommended by this specification as well as the recommendations from the manufacturers of the of the cooling tower.

Chemicals are required to meet all required federal, state, and local environmental regulations for the treatment of condenser-side heat exchangers, cooling towers and direct discharge to the sanitary sewer.

Provisions should be made to effectively dose, monitor and control a water treatment program to include (1) inhibitor and biocide injection (2) water sampling, (3) corrosion coupon sampling, and (4) effective bleed and control points.

2.3.1.1 Cooling Tower Water Limits

Meet the following cooling tower water limits, unless dictated differently by the cooling tower or chiller manufacturer's recommendations:

Treatment type Phosphonate/Polymer

Puckorius Index 4 minimum

SECTION 23 25 00 Page 6

Langelier Index 4 maximum

Total Dissolved Solids 5000 ppm maximum

Calcium Hardness 1200 ppm maximum

Silica 150 ppm maximum pH 7.5 - 8.5

For treated cooling tower water, minimize blowdown until the first of one of the top 5 limits is reached. Specific requirements for treatment chemicals and levels are listed below in paragraphs dealing with large systems (capacities greater than 50 tons).

2.3.1.2 Chemical Treatment for Large Systems

For cooling systems with capacities greater than 50 tons provide one of the three following chemical treatments with the limits indicated. The zinc and molybdate in the last two treatments help to meet the maximum corrosion requirements in waters that tend to be more corrosive. Maintain biocides to control bacteria below 10,000 colony forming units per milliliter.

a. Phosphonate Type Treatment

Phosphate 3-5 ppm

Polymer 3-4 ppm

TT 1-2 ppm

Biocides as required

b. Zinc-Phosphonate Type Treatment

Phosphate 3-5 ppm

Polymer 3-4 ppm

Zinc 1-2 ppm

TT 1-2 ppm

Biocides as required

c. Zinc-Molybdate Type Treatment

Phosphate 3-5 ppm

SECTION 23 25 00 Page 7

Polymer 3-4 ppm

Molybdate 10-15 ppm

Zinc 2-3 ppm

TT 1-2 ppm

Biocides as required

2.3.1.2.1 General Requirements

Provide a water treatment system capable of automatically feeding chemicals and bleeding the system to prevent corrosion, scale, and biological formations. Submit 6 complete copies, at least 5 weeks prior to the purchase of the water treatment system, of the proposed water treatment plan including a layout; control scheme; a list of existing make-up water chemistry, including the items listed in paragraph Water Analysis; a list of treatment chemicals to be added; the proportion of chemicals to be added; the final treated water control levels; and a description of health, safety and environmental concerns for handling the chemicals plus any special ventilation requirements. Automatic chemical feed systems must automatically feed chemicals into the cooling water based on makeup water rate. Use electrical signals from a water meter on the makeup water line to control the output of chemical feed pumps. Set the system initially manually based on the water analysis of the make-up water. Submit 6 complete copies of operating and maintenance manuals for the step-by-step water treatment procedures. Include in the manuals all testing procedures used in determining water quality.

2.3.1.2.2 Chemical Feed Pumps and Tanks

a. Furnish chemical feed pumps and tanks as a package with the pumps mounted on and piping connected to the tank. Furnish chemical feed pumps must be of the positive displacement diaphragm type. Furnish all pump cylinders, plungers, ball check valves, and check valve bodies made of corrosion resistant materials suitable for the chemicals being pumped. Ensure the cylinders of the provided pumps are replaceable for increased or reduced pressure or capacity ranges.

Drive motors shall be 110 volt, single phase and shall have drip-proof enclosures.

b. Provide pumps with a flow rate adjustable from 0 to 100 percent while in operation. The volumetric accuracy of the pumps is required to be within one percent over the range indicated. Ensure pump capacities are adjustable by positioning crank pin with micrometer setscrews.

Divide stroke length scale in percentage graduations engraved on scale. Ensure the discharge pressure of pumps is not less than 1.5 times the line pressure at the point of connection. Provide the pumps with a pressure relief valve and a check valve mounted in the pump discharge. Control the pump by an external controller/timer receiving signals from the makeup water meter.

c. Provide chemical tanks as shown. The tanks shall be constructed of materials compatible with the chemicals to be stored in the tank with a hinged cover and mounted on legs. Tanks shall have filling and drain connections and gauge glass. Each tank shall be furnished with

SECTION 23 25 00 Page 8 one pump, mounted and piped with black iron pipe and fittings, with suction strainer and stainless steel screen, and with 1/2 inch relief valve with steel body and stainless steel trim. Tank bottom shall be dished concave to a radius equal to the diameter of the tank.

Motor-driven agitator shall be provided. The tanks shall have sufficient capacity to require recharging only once per 14 days during normal operation. once per 30 days during normal operation.

d. Provide containment basins as shown on the drawings and accompanying ramps with platforms. Containment basins shall have adequate volume capacity to contain the full contents of the largest tank located within the basin footprint. Ramps/platforms must be configured and sized to allow servicing and tank removal/replacement. Top of ramp/platform must be roughly equal to the top of the containment basin.

2.3.1.2.3 Chemical Injection Assembly

Provide an injection assembly at each chemical feed point. Locate the injection assembly downstream of recirculating pumps and upstream of the condenser. Construct the injection assemblies of stainless steel. Locate the discharge of the assemblies in the cooling water piping as recommended by the manufacturer. Include with each assembly a shutoff valve and check valve at the point of entrance into the cooling water line.

2.3.1.2.4 Water Meter

Provide water meters with an electric contacting register and remote accumulative counter. Install the meter within the make-up water line, as indicated.

2.3.1.2.5 Timers

Provide timers which are of the automatic reset, adjustable type, and are electrically operated. Ensure the timers are designed to work with the contacting head water meters. Include the water meter cable with the timer. Ensure timers control operation of the chemical feed pumps and are suitable for a 120 volt current. Locate the timers within the water treatment control panel.

2.3.1.2.6 Bleed (Blowdown) Line

Control the flow through the bleed line by a conductivity meter and probe installed to measure the conductivity of the cooling water. Provide a high and low set point on the conductivity meter above which the meter opens a solenoid valve on the bleed line. Locate the bleed line attachment to the cooling water piping downstream of the recirculating pumps and upstream of the chemical injection point. Extend the bleed line to the nearest drain for continuous discharge.

2.3.1.2.7 Control Panel

Provide a NEMA 12 control panel enclosure suitable for surface mounting.

Construct the panel of stainless steel with a hinged door and lock.

Include a laminated plastic nameplate identifying each of the following functions:

(1) Main power switch and indicating light

(2) MAN-OFF-AUTO selector switch

SECTION 23 25 00 Page 9

(3) Indicating lamp for bleed-off valve

(4) Indicating lamp for each chemical feed pump

(5) Set point reading for each timer

2.3.1.2.8 Chemical Piping

Construct the piping and fittings of schedule 80 PVC suitable for the water treatment chemicals.

2.3.1.2.9 Sequence of Operation

Add chemicals based upon sensing the make-up water flow rate and activating appropriate timers. Provide a separate timer for each chemical. Control the blow down based upon the conductivity of the cooling water. Control the injection of the chemical required for biological control with a timer that can be manually set for proper chemical feed.

The water treatment company is required to determine and set a timer set points, blow down rates, and chemical pump flow rates.

2.3.1.2.10 Test Kits

Provide one test kit of each type required to determine the water quality as outlined within the operation and maintenance manuals.

2.3.2 Supplemental Components/Services

Ensure drain and makeup water piping complies with the requirements of Section 22 00 00 PLUMBING, GENERAL PURPOSE. Connect drains to sanitary sewer systems by means of an indirect waste connection.

2.4 Prefabricated Insulated Enclosure

2.4.1 Enclosure Dimensions

Provide Clear Inside dimensions of 14'-0" Long x 6'-0" Wide x 8'-0" High.

Coordinate size of enclosure with chemical treatment shop drawings.

2.4.2 Flooring

4 inch thick floor panels with cam lock mechanism for panel assembly.

High density extruded polystyrene foam (R28) laminated between sheets of:

exterior 26 gauge steel; interior 26 gauge galvalume steel & 1/2" FRT plywood & Snap lock PVC floor tile with cove base and adhesive, grey.

Steel skid: powder coated with fork lift slots and (4) lifting brackets.

2.4.3 Walls & Roof

4 inch thick, wall and ceiling panels, and cam lock mechanisms for panel assembly. High density extruded polystyrene foam (R26) laminated between sheets of 26 gauge galvanized steel - tan exterior/white interior stucco embossed finish. Provide manufacturer's color charts and chips.

2.4.4 Roofing

Thermoplastic single ply PVC roof system and 6" tan termination bar & fasteners.

SECTION 23 25 00 Page 10

2.4.5 Openings

Double Door (8' W x 7' H) & Frame, 26 Ga including threshold, weatherseal, stainless steel hinges, drip cap & passage lever/lever door deadbolt Coordinate installation of accessories through prefabricated metal building. Cut openings that are sized properly for all through wall penetrations and seal to a weathertight condition.

Contractor to install intake/exhaust storm louvers. Provide 12 x 8 intake steel storm louver & 10 x 8 exhaust steel storm louver. Coordinate location with mechanical drawings and pre-fabricated metal panels.

2.4.6 Electric Baseboard Heater

Provide 1,500 watt electric baseboard heater with thermostat. Heater voltage must be 208/240 V. Provide 48" long white enclosure constructed of minimum 0.0329-inch thick steel with removable front cover, end caps and baked enamel finish in manufacturer's standard color.

Factory-packaged units constructed according to UL 499, UL 1030, UL 1278 and UL 2021. Provide electrical components, devices and accessories listed and labeled as defined in NFPA 70, by a qualified testing agency and marked for intended location and application.

Nickel-chromium-wire heating element enclosed in metallic sheath mechanically bonded to fins, with high-temperature cutout and sensor running the full length of the element. Element supports shall eliminate thermal expansion noise.

2.4.7 Electrical

a. Electrical Service: Provide a 200-amp, 120/240-volt, single-phase, three-wire panelboard with spaces for 42 circuit breakers at the prefabricated insulated enclosure. Coordinate mounting location inside of enclosure with chemical treatment equipment. Mount panelboard enclosure on ½” Fire Retardant Treated Reinforced Plywood. Provide panelboard with required branch circuit breakers (quantities and ratings) to serve chemical treatment equipment, electric baseboard heat, receptacles and lighting. Provide HACR type circuit breakers for all HVAC and plumbing equipment circuits.

b. Receptacles: Provide ten (1) duplex NEMA 5-20R wall receptacles. Each receptacle must have a 4”x4” outlet box with ¾”-knockouts and device plate cover.

c. Lighting: Provide two (2) LED 4’-0” long lighting fixture rated for use in a cooler/freezer. Lighting must be Kason Model #1810LC4000. Provide one manual single-pole toggle switch in a 2”x4” outlet box with ¾”-knockouts.

PART 3 EXECUTION

3.1 EXAMINATION

After becoming familiar with all details of the work, verify all dimensions in the field, and advise the Contracting Officer of any discrepancy, before performing any work.

3.2 INSTALLATION

Provide all chemicals, equipment and labor necessary to bring all system waters in conformance with the specified requirements. Perform all work in accordance with the manufacturer's published diagrams, recommendations, SECTION 23 25 00 Page 11 and equipment warranty requirements.

3.2.1 Piping

Fabricate all connections between dissimilar metals using dielectric unions.

3.2.2 Prefabricated Insulated Enclosure

Move Prefabricated Enclosure into place after the manufacturer has delivered to site. Coordinate location with mechanical equipment. Site enclosure prior to placing mechanical equipment. Create openings in enclosure for pipe penetrations and louvers and create weathertight seals around all new penetrations.

3.3 TRAINING COURSE

Submit a schedule, at least 2 weeks prior to the date of the proposed training course, that identifies the date, time, and location for the training. Conduct a training course for the operating staff as designated by the Contracting Officer. The training period shall consist of a total 4 hours of normal working time and start after the system is functionally completed but prior to final acceptance tests. Submit field instructions, at least 2 weeks prior to construction completion, including equipment layout, wiring and control diagrams, piping, valves and control sequences, and typed condensed operation instructions. The condensed operation instructions shall include preventative maintenance procedures, methods of checking the system for normal and safe operation, and procedures for safely starting and stopping the system. The posted instructions shall be framed under glass or laminated plastic and posted where indicated by the Contracting Officer. The field instructions shall cover all of the items contained in the Operation and Maintenance Manuals as well as demonstrations of routine maintenance operations.

3.4 FIELD QUALITY CONTROL

3.4.1 Tests

If the waters of the mechanical systems are not in conformance with the specified requirements or in accordance with manufacturer's recommendations, the contractor is required to direct the water treatment company to take corrective action to achieve compliance. Perform daily operational tests in the directed frequencies to maintain required control to prevent corrosion, scaling and damage to equipment during operation.

Submit test schedules, at least 2 weeks prior to the start of related testing, for the cooling water quality tests. Identify the date, time, frequency and collection location for each test within the schedules.

3.4.2 Cooling Water Quality Tests

3.4.2.1 Tests for Large Systems (daily)

Daily, for cooling systems with a capacity larger than 50 tons, ensuring the following items are recorded.

pH _____

Total Alkalinity (as CaCO3) _____ ppm

SECTION 23 25 00 Page 12

2 July 20252 July 2025

Conductivity _____ micromho/cm

Phosphate _____ ppm

Zinc, if used (Zn) _____ ppm

Molybdate, if used (Mo) _____ ppm

3.4.3 Quality Assurance Testing

Conduct QA testing periodically by an independent water treatment lab/consultant to verify to managers that the mechanical and water treatment systems are being maintained properly. Provide the QA evaluation reports to the government COR.

3.4.3.1 Cooling Water QA Tests

Submit test reports in bound 8-1/2 by 11 inch booklets. Within the reports, identify the chemical composition of the water. Also include in the reports a comparison of the manufacturer's or chemical vendor's recommended operating conditions for the cooling tower and condenser in relation to the actual condition of the water. Document any required corrective actions undertaken within the report.

a. For cooling systems with capacities greater than 50 ton, analyze the cooling water a minimum of once a month for a period of one year by the water treatment company. Ensure the analysis includes the following information recorded in accordance with ASTM D596.

Date of Sample _____

Temperatures (before & after condenser) _____ & _____ degrees F pH _____

Silica (SiO2) _____ ppm

Iron (total, as Fe(2)O(3)) _____ ppm

Copper (Cu) _____ ppm

Calcium Hardness(CaCO3) _____ ppm

Total Hardness (as CaCO3) _____ ppm

Chloride (Cl) _____ ppm

Total Alkalinity (as CaCO3) ppm

Conductivity micromho/cm

Total Dissolved Solids _____ ppm

Phosphonate (as PO4) _____ ppm

Zinc (if used) (Zn) _____ ppm

Molybdate (if used) (Mo) _____ ppm

SECTION 23 25 00 Page 13

Tolyltriazole (TT) _____ ppm

Biocide _____ ppm

Bacteria colony count _____ colonies/mL

Makeup water pH ppm

Makeup water Iron _____ ppm

Makeup water Silica _____ ppm

Makeup water Calcium Hardness ppm

Makeup water Total Hardness ppm

Makeup water Total Alkalinity ppm

Makeup water Chloride (Cl) ppm

Makeup water Conductivity _____ micromho/cm

Written evaluation summary

3.4.4 Corrosion Testers

Install corrosion coupon and rack systems to verify corrosion control in the systems. Install testers or coupons in flowing system water through a sidestream or rack system. Test both mild steel and copper metal samples in the corrosion testers in accordance with ASTM D2688. Replace and analyze samples every 3 months. Rates of corrosion less than 3 mpy for steel and 0.2 mpy for copper are acceptable. Install corrosion testers on the piping systems of the following systems:

Cooling water loop

3.5 INSPECTIONS

3.5.1 Inspection General Requirements

Thirty days after project completion, inspect the cooling tower and condenser for problems due to corrosion, scale, and biological growth. If the cooling tower and condenser are found not to conform to the manufacturer's recommended conditions, and the water treatment company recommendations have been followed; instruct the water treatment company to provide all chemicals and labor for cleaning or repairing the equipment as required by the manufacturer's recommendations.

3.6 ONE-YEAR INSPECTION REPORT FOR COOLING WATER

At the conclusion of the one year period, inspect the cooling tower for

SECTION 23 25 00 Page 14 problems due to corrosion, scale, and biological growth. If the equipment is found not to conform to the manufacturers recommended conditions, and the water treatment company recommendations have been followed; the water treatment company shall provide all chemicals and labor for cleaning or repairing the equipment as required by the manufacturer's recommendations.

3.7 PREFABRICATED INSULATED ENCLOSURE

3.7.1 Manufacturer's Warranty

Submit all manufacturers' signed warranties to Contracting Officer prior to final commissioning and acceptance.

3.7.2 Contractor's Warranty For Installation

Submit warranty for installation to the Contracting Officer prior to final commissioning and acceptance.

CONTRACTOR'S FIVE YEAR NO PENAL SUM WARRANTY

FOR

PREFABRICATED INSULATED ENCLOSURE

FACILITY DESCRIPTION:________________________________________________________

BUILDING NUMBER:_____________________________________________________________

CORPS OF ENGINEERS CONTRACT NUMBER:__________________________________________

CONTRACTOR

CONTRACTOR:__________________________________________________________________

ADDRESS:_____________________________________________________________________

POINT OF CONTACT:____________________________________________________________

TELEPHONE NUMBER:____________________________________________________________

OWNER

OWNER:_______________________________________________________________________

ADDRESS:_____________________________________________________________________

POINT OF CONTACT:____________________________________________________________

TELEPHONE NUMBER:____________________________________________________________

CONSTRUCTION AGENT

CONSTRUCTION AGENT:__________________________________________________________

ADDRESS:_____________________________________________________________________

POINT OF CONTACT:____________________________________________________________

SECTION 23 25 00 Page 15

TELEPHONE NUMBER:____________________________________________________________

SECTION 23 25 00 Page 16

CONTRACTOR'S FIVE YEAR NO PENAL SUM WARRANTY

FOR

PREFABRICATED INSULATED ENCLOSURE

(continued)

THE METAL BUILDING SYSTEM INSTALLED ON THE ABOVE NAMED BUILDING IS WARRANTED

FOR A PERIOD OF FIVE (5) YEARS AGAINST WORKMANSHIP AND

MATERIAL DEFICIENCIES, WIND DAMAGE AND STRUCTURAL FAILURE WITHIN PROJECT

SPECIFIED DESIGN LOADS, AND LEAKAGE. THE METAL BUILDING SYSTEM COVERED

UNDER THIS WARRANTY INCLUDES, BUT IS NOT LIMITED TO, THE FOLLOWING:

FRAMING AND STRUCTURAL MEMBERS, ROOFING AND SIDING PANELS AND SEAMS,

INTERIOR OR EXTERIOR GUTTERS AND DOWNSPOUTS, ACCESSORIES, TRIM, FLASHINGS

AND MISCELLANEOUS BUILDING CLOSURE ITEMS SUCH AS DOORS AND WINDOWS (WHEN

FURNISHED BY THE MANUFACTURER), CONNECTORS, COMPONENTS, AND FASTENERS, AND

OTHER SYSTEM COMPONENTS AND ASSEMBLIES INSTALLED TO PROVIDE A WEATHERTIGHT

SYSTEM; AND ITEMS SPECIFIED IN OTHER SECTIONS OF THESE SPECIFICATIONS THAT

BECOME PART OF THE METAL BUILDING SYSTEM.

ALL MATERIAL AND WORKMANSHIP DEFICIENCIES, SYSTEM DETERIORATION CAUSED BY

EXPOSURE TO THE ELEMENTS OR INADEQUATE RESISTANCE TO SPECIFIED SERVICE

DESIGN LOADS, WATER LEAKS AND WIND UPLIFT DAMAGE MUST BE REPAIRED AS

APPROVED BY THE CONTRACTING OFFICER.

ALL MATERIAL DEFICIENCIES, WIND DAMAGE, STRUCTURAL FAILURE AND LEAKAGE

ASSOCIATED WITH THE METAL BUILDING SYSTEM COVERED UNDER THIS WARRANTY MUST

BE REPAIRED AS APPROVED BY THE CONTRACTING OFFICER.

THIS WARRANTY COVERS THE ENTIRE COST OF REPAIR OR REPLACEMENT, INCLUDING ALL

MATERIAL, LABOR, AND RELATED MARKUPS. THE ABOVE REFERENCED WARRANTY

COMMENCED ON THE DATE OF FINAL ACCEPTANCE ON {_____} AND WILL REMAIN IN

EFFECT FOR STATED DURATION FROM THIS DATE.

SIGNED, DATED, AND NOTARIZED (BY COMPANY PRESIDENT)

(Company President) (Date)

SECTION 23 25 00 Page 17

FOR

PREFABRICATED INSULATED ENCLOSURE

(continued)

THE CONTRACTOR HEREBY SUPPLEMENTS THIS WARRANTY WITH WRITTEN WARRANTIES FROM

THE MANUFACTURER AND/OR INSTALLER OF THE METAL BUILDING SYSTEM, WHICH IS

SUBMITTED ALONG WITH THE CONTRACTOR'S WARRANTY. HOWEVER, THE CONTRACTOR IS

ULTIMATELY RESPONSIBLE FOR THIS WARRANTY AS OUTLINED IN THE SPECIFICATIONS

AND AS INDICATED IN THIS WARRANTY.

EXCLUSIONS FROM COVERAGE

1. NATURAL DISASTERS, ACTS OF GOD (LIGHTNING, FIRE, EXPLOSIONS, SUSTAINED

WIND FORCES IN EXCESS OF THE DESIGN CRITERIA, EARTHQUAKES, AND HAIL).

2. ACTS OF NEGLIGENCE OR ABUSE OR MISUSE BY GOVERNMENT OR OTHER

PERSONNEL,INCLUDING ACCIDENTS, VANDALISM, CIVIL DISOBEDIENCE, WAR, OR DAMAGE

CAUSED BY FALLING OBJECTS.

3. DAMAGE BY STRUCTURAL FAILURE, SETTLEMENT, MOVEMENT, DISTORTION, WARPAGE,

OR DISPLACEMENT OF THE BUILDING STRUCTURE OR ALTERATIONS MADE TO THE

BUILDING.

4. CORROSION CAUSED BY EXPOSURE TO CORROSIVE CHEMICALS, ASH OR FUMES

GENERATED OR RELEASED INSIDE OR OUTSIDE THE BUILDING FROM CHEMICAL PLANTS,

FOUNDRIES, PLATING WORKS, KILNS, FERTILIZER FACTORIES, PAPER PLANTS, AND THE

LIKE.

5. FAILURE OF ANY PART OF THE BUILDING SYSTEM DUE TO ACTIONS BY THE OWNER

WHICH INHIBIT FREE DRAINAGE FROM THE ROOF, GUTTERS AND DOWNSPOUTS; OR

CONDITIONS WHICH CREATE PONDING WATER ON THE ROOF OR AGAINST THE BUILDING

SIDING.

6. THIS WARRANTY APPLIES TO THE METAL BUILDING SYSTEM. IT DOES NOT INCLUDE

ANY CONSEQUENTIAL DAMAGE TO THE BUILDING INTERIOR OR CONTENTS WHICH IS

COVERED BY THE WARRANTY OF CONSTRUCTION CLAUSE INCLUDED IN THIS CONTRACT.

7. THIS WARRANTY CANNOT BE TRANSFERRED TO ANOTHER OWNER WITHOUT WRITTEN

CONSENT OF THE CONTRACTOR AND THIS WARRANTY AND THE CONTRACT PROVISIONS TAKE

PRECEDENCE OVER ANY CONFLICTS WITH STATE STATUTES. REPORTS OF LEAKS AND

BUILDING SYSTEM DEFICIENCIES MUST BE RESPONDED TO WITHIN 48 HOURS OF RECEIPT

OF NOTICE BY TELEPHONE OR IN WRITING FROM EITHER THE OWNER, OR CONTRACTING

OFFICER. EMERGENCY REPAIRS, TO PREVENT FURTHER ROOF LEAKS, MUST BE

INITIATED IMMEDIATELY; A WRITTEN PLAN MUST BE SUBMITTED FOR APPROVAL TO

REPAIR OR REPLACE THIS SSSMR SYSTEM WITHIN SEVEN CALENDAR DAYS. ACTUAL WORK

FOR PERMANENT REPAIRS OR REPLACEMENT MUST BE STARTED WITHIN 30 DAYS AFTER

RECEIPT OF NOTICE, AND COMPLETED WITHIN A REASONABLE TIME FRAME. IF THE

CONTRACTOR FAILS TO ADEQUATELY RESPOND TO THE WARRANTY PROVISIONS, AS STATED

SECTION 23 25 00 Page 18

FOR

PREFABRICATED INSULATED ENCLOSURE

(Exclusions from Coverage Continued)

POST A FRAMED COPY OF THIS WARRANTY IN THE MECHANICAL ROOM OR OTHER APPROVED

LOCATION DURING THE ENTIRE WARRANTY PERIOD.

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SECTION 23 25 00 Page 20

1.6 SALVAGE MATERIAL AND EQUIPMENT

1.7 QUALITY ASSURANCE

1.12 PROJECT FLOAT

1.5.5 Electronic File Format

1.8.6 Delivery of Copies

1.9.4 Methane Mitigation Plan MMP

1.16.2 Requirements After Construction

1.17 SEVERE STORM PLAN

1.5.1.3 Quality Control QC Meetings

1.6.6 Special Inspector and Special Inspector of Record

1.5.7 Special Inspector of Record SIOR

3.2 DEFECTIVE WORK