232500 02-15 HVAC WATER TREATMENT.docx
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- 36C25621R0013
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This document outlines requirements for a federal construction contract opportunity to remodel a pharmacy at a Veterans Health Administration medical center. The contractor shall provide all supervision, labor, materials, tools, and equipment to remodel the current pharmacy compounding area and build out a new segregated compounding area to meet USP 800 requirements. The procurement is set aside only for verified Service-Disabled Veteran-Owned Small Businesses. The construction project value is between $1,000,000 to $5,000,000. The work will be performed at the Southeast Louisiana Veterans Health Care System in New Orleans, Louisiana.
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Renovate Pharmacy for USP 800 Requirements 02-15 VAMC New Orleans, LA
SECTION 23 25 00
HVAC WATER TREATMENT
PART 1 GENERAL
1.1 DESCRIPTION
| A. | This section specifies cleaning and treatment of circulating HVAC water systems, including the following. |
| 1. | Cleaning compounds. |
| 2. | Chemical treatment for closed loop heat transfer systems. |
1.2 RELATED WORK
A. Section 01 00 00, GENERAL REQUIREMENTS.
B. Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, and SAMPLES.
C. Section 23 05 11, COMMON WORK RESULTS FOR HVAC.
D. Section 23 09 23, DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC.
| E. | Section 23 21 13, HYDRONIC PIPING. |
| F. | Section 23 22 13, STEAM and CONDENSATE HEATING PIPING. |
1.3 QUALITY ASSURANCE
| A. | Refer to paragraph, QUALITY ASSURANCE in Section 23 05 11, COMMON WORK RESULTS FOR HVAC. |
| B. | Technical Services: Provide the services of an experienced water treatment chemical engineer or technical representative to direct flushing, cleaning, pre-treatment, training, debugging, and acceptance testing operations; direct and perform chemical limit control during construction period and monitor systems for a period of 12 months after acceptance, including not less than 6 service calls and written status reports. Emergency calls are not included. Minimum service during construction/start-up shall be 6 hours. |
| C. | Field Quality Control and Certified Laboratory Reports: During the one year guarantee period, the water treatment laboratory shall provide not less than 6 reports based on onsite periodic visits, as stated in paragraph 1.3.B, sample taking and testing, and review with VA personnel, of water treatment control for the previous period. In addition to field tests, the water treatment laboratory shall provide certified laboratory test reports. These monitoring reports shall assess chemical treatment accuracy, scale formation, fouling and corrosion control, and shall contain instructions for the correction of any outofcontrol condition. |
| D. | Log Forms: Provide one year supply of preprinted water treatment test log forms. |
| E. | Chemicals: Chemicals shall be non-toxic approved by local authorities and meeting applicable EPA requirements. |
1.4 SUBMITTALS
| A. | Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, and SAMPLES. |
| B. | Manufacturer's Literature and Data including: |
| 1. | Cleaning compounds and recommended procedures for their use. |
| 2. | Chemical treatment for closed systems, including installation and operating instructions. |
| C. | Water analysis verification. |
| D. | Materials Safety Data Sheet for all proposed chemical compounds, based on U.S. Department of Labor Form No. L5B0054. |
| E. | Maintenance and operating instructions in accordance with Section 01 00 00, GENERAL REQUIREMENTS. |
PART 2 PRODUCTS
2.1 CLEANING COMPOUNDS
| A. | Alkaline phosphate or non-phosphate detergent/surfactant/specific to remove organic soil, hydrocarbons, flux, pipe mill varnish, pipe compounds, iron oxide, and like deleterious substances, with or without inhibitor, suitable for system wetted metals without deleterious effects. |
| B. | All chemicals to be acceptable for discharge to sanitary sewer. |
| C. | Refer to Section 23 21 13, HYDRONIC PIPING and Section 23 22 13, STEAM and CONDENSATE HEATING PIPING, PART 3, for flushing and cleaning procedures. |
2.2 CHEMICAL TREATMENT FOR CLOSED LOOP SYSTEMS
| A. | Inhibitor: Provide sodium nitrite/borate, molybdate-based inhibitor or other approved compound suitable for makeup quality and makeup rate and which will cause or enhance bacteria/corrosion problems or mechanical seal failure due to excessive total dissolved solids. Shot feed manually. Maintain inhibitor residual as determined by water treatment laboratory, taking into consideration residual and temperature effect on pump mechanical seals. |
| B. | pH Control: Inhibitor formulation shall include adequate buffer to maintain pH range of 8.0 to 10.5. |
| C. | Performance: Protect various wetted, coupled, materials of construction including ferrous, and red and yellow metals. Maintain system essentially free of scale, corrosion, and fouling. Corrosion rate of following metals shall not exceed specified mills per year penetration; ferrous, 0-2; brass, 0-1; copper, 0-1. Inhibitor shall be stable at equipment skin surface temperatures and bulk water temperatures of not less than 121 degrees C (250 degrees F) and 52 degrees C (125 degrees Fahrenheit) respectively. Heat exchanger fouling and capacity reduction shall not exceed that allowed by fouling factor 0.0005. |
| D. | Pot Feeder: Use existing as needed to bring water treatment chemicals up to minimum requirements after the completion of the work on the chilled water and reheat water systems. |
2.3 EQUIPMENT AND MATERIALS IDENTIFICATION
A. Refer to Section 23 05 11, COMMON WORK RESULTS FOR HVAC.
PART 3 EXECUTION
3.1 INSTALLATION
| A. | Delivery and Storage: Deliver all chemicals in manufacturer's sealed shipping containers. Store in designated space and protect from deleterious exposure and hazardous spills. |
| B. | Refer to Section 23 21 13 HYDRONIC PIPING for chemical treatment piping, installed as follows: |
| 1. | Provide a by-pass line and ball valves to allow for bypassing, isolation, and servicing of components. |
| 2. | Provide piping for erosion chemical feeder per manufacturer’s installation instructions. Provide ball valves to isolate and service feeder. |
| 3. | Provide installation supervision, start-up and operating instruction by manufacturer's technical representative. |
| C. | Before adding cleaning chemical to the closed system, all air handling coils and fan coil units should be isolated by closing the inlet and outlet valves and opening the bypass valves. This is done to prevent dirt and solids from lodging the coils. |
| D. | Do not valve in or operate system pumps until after system has been cleaned. |
| E. | After chemical cleaning is satisfactorily completed, open the inlet and outlet valves to each coil and close the by-pass valves. Also, clean all strainers. |
| F. | Perform tests and report results in accordance with Section 01 00 00, GENERAL REQUIREMENTS. |
| G. | After cleaning is complete, and water PH is acceptable to manufacturer of water treatment chemical, add manufacturer-recommended amount of chemicals to systems. |
| H. | Instruct VA personnel in system maintenance and operation in accordance with Section 01 00 00, GENERAL REQUIREMENTS. |
E N D 23 25 00 - 4
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