OBO Standard Specifications (Potable Water Systems Design Requirements).pdf
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- Attached to
- World -Wide Water Storage Tank Remediation
- Solicitation number
- 19AQMM20R0075
About this file
This document outlines a federal solicitation for concrete water storage tank remediation services. The Bureau of Overseas Buildings Operations within the Department of State seeks to award at least three Indefinite Delivery, Indefinite Quantity contracts for a base year plus four option years not to exceed $100 million total. Services include assessment, repair, and interior coating of water tanks at U.S. diplomatic missions worldwide. Proposals are due by March 27, 2020. One award each will be set aside for a woman-owned small business and small business, with a full and open award. Questions are due by March 12, 2020 with responses posted as an amendment.
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Text version
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INTRODUCTION
OVERVIEW
This sec!on contains requirements for potable water treatment systems. Water treatment systems are cri!cal infrastructure for OBO facili!es.
OBO-UNIQUE CODE REQUIREMENTS
OBO-ICS IPC Chapter 6 for Drinking Water
Treatment Units
RELATED CONTENT PAGES
F03 Divisions 21-23 OBO Standard Specs
Sec!on 223230 for Potable Water Treatment � � � � � � � � � � � � � � � � � � � � � � � � ! " # $ % & # ' ( ) " * + & , " - " % . / � 0 � 1 � 1 2 3 . ' 4 ( " 5 ' . " , ! , " ' . - " % . 6 7 / . " - /
E090101 POTABLE WATER TREATMENT SYSTEMS1 8 1 8 � � � �
E090101-01 DESIGN REQUIREMENTS
E090101-
01.01
Potable Water Treatment Units Design
1. OBO SPEC master specifica!on shall be used as the basis for developing the project-specific versions. Potable water shall be treated and maintained downstream of general water storage.
2. Provi de treatment processes tailored to the individual water sources.
3. Provide treatment processes that minimize technical maintenance.
4. Potable water treatment system shall be designed with parallel modules and component isola!on valves which allow con!nual opera!on during maintenance.
5. Water sources of different quality shall receive individually tailored treatment to address the specific contaminants shown in the respec!ve tests. Reverse osmosis and other pressure membrane technologies shall not be applied to a par!cular water source unless jus!fied by the water tests.
E090101-
01.02
Disinfec!on
Provide water system residual disinfec!on using a sodium hypochlorite, calcium hypochlorite or on-site disinfectant genera!on -based system.
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6 " % / & . & O " P + . Q % # ( ' / / & R & " S T 6 P Q U
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E090102 RAW & POTABLE WATER STORAGE1 8 1 8 � � � �
INTRODUCTION
OVERVIEW
This sec!on contains requirements for raw and potable water storage.
OBO-UNIQUE CODE REQUIREMENTS
OBO-ICS IPC Chapter 6 for Raw Water Inlet and Potable Water Storage Tanks
RELATED CONTENT PAGES
D0203 U!lity Building (UTL)
E0301 Compound Water Systems
E090301 Fire Suppression Systems
E090102-01 DESIGN REQUIREMENTS
E090102-
01.01
Storage Tank Design Requirements – General
1. Raw water inlet tank shall not be located below the fire pump to prevent contamina!on from the fire pump diesel fuel.
2. Potable water storage tanks shall be located within building or onsite, in close proximity to raw water storage tank.
3. Provide means of egress to each tank to allow for maintenance. This requires specific a#en!on to, and coordina!on of, access to the raw water inlet tank.
E090102-
01.02
Storage Tank - Coa!ngs
1. The interiors of raw water, potable water, and fire protec!on water tanks shall be coated and sealed in compliance with NSF Standard No. 61.
2. Constructed tanks
a. Interior tank lining shall be one of the following:
Ceramic !le
100 percent solids epoxy coa!ng
Elastomeric Polyurethane
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Cement-based, aggregate type, heavy duty waterproof coa!ng with an acrylic polymer mixing agent produced by the coa!ng manufacturer
b. Exterior walls below grade shall be coated with a cement-base, heavy duty waterproof coa!ng designed specifically to waterproof be low-grade surfaces.
E090102-
01.03
HVAC Makeup Service Water Storage
Where water-cooled chillers or cooling towers are used, provide water storage capacity for HVAC makeup service water calculated at 12 liters/ton per hour for 168 hours of storage.
E090102-
01.04
Gravity Tanks
Where u!lity system pressure is inadequate, or when u!lity system flow is intermi#ent, gravity tanks are permi#ed to provide a rela!vely constant distribu!on system pressure.
6 " % / & . & O " P + . Q % # ( ' / / & R & " S T 6 P Q U
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