SPECIFICATIONS
1. Returnable drums
A Contractor delivering any product in returnable drums shall be responsible for removing empty drums at no additional cost to the University. Empty drums may be picked up by the Contractor when deliveries are made. At the request of the University, empty drums must be picked up within 14 calendar days of the request.
No deposit fee or payment of any kind shall be made by the University for drums or any other containers.
2. LOT 1 -- COOLING TOWER WATER CHEMICAL TREATMENT
2.1 The cooling water chemical treatment program shall be used on both cooling tower and evaporative condensers throughout the University campus. The performance and dosage specification are listed. Note that building systems may be added or deleted as deemed necessary by the University and purchase levels are not guaranteed.
All chemical treatment calculations shall be based upon the makeup water analysis as shown.
Chemical treatment must be compatible with existing University equipment and system materials, without any modifications or other costs to the University to use the Bidder's product.
2.2 Product Specifications
2.2.1 pH, Alkalinity, Scale, and Corrosion Control Agent: The pH and alkalinity control agent shall be sulfuric acid. The corrosion inhibitor shall be a combination of zinc, tolyltriazole, and 1-hydroxyethylidene-1, 1-diphosphonic acid (HEDP). The formula shall conform to the following:
1. Alkalinity reduction capability shall be not more than 2.1 ppm of treatment per 1 ppm of alkalinity (as CaCO3).
2. The inhibitor combination, when used at a dosage of 600 ppm (5 pounds per 1,000 gallons of make-up water) shall develop at 3.5 cycles of concentration the following minimum levels:
- Zinc (as Zn) Not less than 4.0 ppm or more than 6.0 ppm.
- Tolyltriazole Not less than 6 ppm or more than 10 ppm.
- Organo-Phosphonate Not less than 10 ppm active
The premixed chemical treatment (acid and inhibitors) is currently packaged in returnable 30 gallon plastic drums. Bidders' prices should reflect this delivery size and type of container. However, if the successful bidder can provide a more convenient and cost effective delivery container, the University reserves the right to waive this requirement.
2.2.2 Non-Oxidizing and Oxidizing Biocide Agents: The biocide products shall control algae, bacteria, and fungus growths to standard plate count of less than 500,000 CFU/Ml, (Colony Forming Units Per Milliliter), and reduce the influence of micro-biologically induced corrosion in the cooling tower systems. Each liquid product is “slug fed” to each system in the specified dosage once per week approximately two days apart. The two (2) biocide types which are being successfully employed must meet the following specification:
1. Non-Oxidizing Biocide must contain the following minimum active ingredient, and provide microbiological control when used at a dosage of 0.83 pounds per 1,000 gallons system volume:
- Alkyl Dimethyl benzyl Ammonium Chloride: --- 15.0%
- Bis(Tributyltin)Oxide: --- 3.2%
2. Oxidizing Biocide must contain the following minimum active ingredients to maintain a one (1) ppm free chlorine residue for a period of at least two (2) hours when fed at a dosage of 0.42 pounds per 1,000 gallons system volume:
- Sodium Hypochlorite: --- 14.7%
2.3 Packaging Requirement :
2.3.1 The pH, Alkalinity, Scale, and Corrosion Control Product shall be delivered in returnable 30 gallon drums with single shipments of 40 or 80 drum lots.
2.3.2 The Non-Oxidizing and Oxidizing Biocide Agents shall be delivered in returnable 55 gallon drums with no specific number of drums per single shipment.
2.4 After the Contract award the contractor shall:
2.4.1 Provide on-site training to University Physical Plant Personnel in the purpose, use, safe handling and testing procedures associated with the product.
2.4.2 With the assistance of Physical Plant Staff, provide and place three test coupons in cooling water piping at test tee provided by the staff. Test coupons must be installed before June 1 st of every year. After four months of continued operation, using the contracted product, provide a certified written lab report that indicates the annual corrosion rate of the product. Return the test coupons to the Physical Plant Staff after the analysis is performed.
2.4.3 At least once every two weeks during the cooling season, make on-site visits to test the chemical treatment systems, answer questions and provide a test report showing the results.
3. LOT 2 -- CLOSED LOOP CLEANERS AND INHIBITOR
3.1 The closed loop cooling and heating systems inside University buildings are periodically cleaned to remove iron oxide corrosion products, silt deposits and glycol degradation materials. The systems are then treated with a liquid borate-nitrite based inhibitor to prevent corrosion and deposit fouling. All products are to be bid for delivery in a liquid form. The performance and dosage specifications are listed below. Note that building systems may be added or deleted from the program at the University’s discretion and no purchase levels are guaranteed.
All chemical treatment calculations shall be based upon the makeup water analysis as shown.
Chemical treatment must be compatible with existing University equipment and system materials, without any modifications or other costs to the University to use the Bidder's product.
3.2 Product Specifications
3.2.1 Alkaline-Organic Cleaner: The Alkaline-Organic Cleaner must contain the following ingredients and content-minimums and provide effective closed system cleaning at a dosage of 5 gallons of cleaner per 1,000 gallons of city water.
Caustic Soda: --- 7% Organic Surfactant: --- 14% Dimethylamide: --- 12%
3.2.2 Polymeric Dispersant: The Polymeric Dispersant must contain the following ingredients and content-minimums and provide effective suspended solids dispersance at a dosage of 1.7 pounds per 1,000 gallons of system water.
Sodium Polyacrylate: --- 10% Sodium Carboxymethylcellulose: --- 2%
3.2.3 Borate-Nitrite Inhibitor: The Borate-Nitrite Inhibitor must provide copper and steel corrosion rates of less than 1.0 mils per year, contain a red pH sensitive dye indicator (or equivalent), be compatible with glycol solutions, and provide the following minimum levels of inhibitor and deposit control agent levels when used at a dosage rate of 10 gallons per 1,000 gallons of city water.
pH:--- 9.5 Active Polymer: --- 4 ppm Nitrite (NO2): --- 700 ppm
Silicate (as SiO2): --- 125 ppm Tolyltriazole: --- 50 ppm
3.3 Packaging Requirement: Closed loop cleaners and inhibitors shall be delivered in returnable 30 or 55 gallon drums in single drum lots.
3.4 After the Contract Award the Contractor shall:
3.4.1 Provide on-site training to University Physical Plant personnel in the purpose, use, safe handling and testing procedures associated with the product.
3.4.2 At least once every calendar quarter, make on-site visits to perform random tests of systems to verify proper use and to answer questions from staff.
4. LOT 3 -- AIR CONDITIONING CONDENSATE DRAIN PAN BIOCIDE TREATMENT
4.1 The Air Conditioning Condensate drain pan treatment program is used at the University of Wisconsin to prevent suspended solids and microorganisms from plugging drain lines which results in drain pan overflow. The containers shall not float or plug drain pan pipe openings. The product must be safe for use in the airstream of ventilation systems supplying fresh air to offices and classrooms. The product must be biodegradable, and contain no heavy metals, phosphates, or chlorine.
4.2 Product Specifications: To meet the scope of the work, the treatment must be supplied in self-metering containers. It must time release a controlled low level of quaternary microbiocide into the drain pans automatically 24 hours a day for a minimum of 3 months when used at a dosage of 1 container per 5 tons of air conditioning.
4.3 Packaging Requirement: Air conditioning condensate drain pan biocide pouches shall be delivered in boxes containing 144 pouches.
| 
