AWWA B512 2023

$76.92

AWWA B512-23 Sulfur Dioxide

Published By	Publication Date	Number of Pages
AWWA	2023	24

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Category: AWWA

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Description

This standard covers sulfur dioxide, a compressed, nonflammable liquified gas, for use in the treatment of municipal and industrial water supplies to remove excess residual chlorine.

PDF Catalog

PDF Pages	PDF Title
7	Foreword I. Introduction. I.A. Background. Sulfur dioxide (SO2), or sulfurous oxide, is a colorless, nonflammable, pungent, suffocating gas. This reducing agent is widely used to remove chlorine and other oxidants from water. Sulfur dioxide is corrosive to mild steel if moisture i
8	I.B. History. The first edition of ANSI/AWWA B512, Sulfur Dioxide, was developed by the AWWA Standards Committee on Taste and Odor Control Chemicals and approved by the AWWA Board of Directors on Jan. 27, 1991, with an effective date of June 1, 1991. Subs I.C. Acceptance. In May 1985, the US Environmental Protection Agency (USEPA) entered into a cooperative agreement with a consortium led by NSF International (NSF) to develop voluntary third-party consensus standards and a certification program for direct
9	II. Special Issues. II.A. Safety. Sulfur dioxide is a colorless, nonflammable, pungent gas or liquid with a vapor density of 2.26. Sulfur dioxide reacts with water or free moisture to form sulfurous acid, which is corrosive.
10	III. Use of This Standard. It is the responsibility of the user of an AWWA standard to determine that the products described in that standard are suitable for use in the particular application being considered. III.A. Purchaser Options and Alternatives. The following information should be provided by the purchaser: III.B. Modification to Standard. Any modification to the provisions, definitions, or terminology in this standard must be provided by the purchaser. IV. Major Revisions. Major revisions made to the standard in this edition include the following:
11	V. Comments. If you have any comments or questions about this standard, please contact AWWA Engineering and Technical Services at 303.794.7711; write to the department at 6666 West Quincy Avenue, Denver, CO 80235-3098; or email at [email protected].
13	AWWA Standard SECTION 1: GENERAL Sec. 1.1 Scope Sec. 1.2 Purpose Sec. 1.3 Application
14	SECTION 2: REFERENCES SECTION 3: DEFINITIONS
15	SECTION 4: REQUIREMENTS Sec. 4.1 Physical Requirements Sec. 4.2 Chemical Requirements Sec. 4.3 Impurities*
16	SECTION 5: VERIFICATION Sec. 5.1 Sampling
17	Sec. 5.2 Laboratory Examination
18	Sec. 5.3 Test Procedures for Sulfur Dioxide, Nonvolatile Residue, Moisture, and Heavy Metals
19	Sec. 5.4 Basis for Shipment and Acceptance
20	Sec. 5.5 Notice of Nonconformance
21	SECTION 6: DELIVERY Sec. 6.1 Marking* Sec. 6.2 Packaging and Shipping
22	Sec. 6.3 Affidavit of Compliance