View Source

40 C.F.R. § 749.68

Hexavalent chromium-based water treatment chemicals in cooling systems.

§ 749.68 Hexavalent chromium-based water treatment chemicals in cooling systems.

(a) Chemicals subject to this section. Hexavalent chromium-based water treatment chemicals that contain hexavalent chromium, usually in the form of sodium dichromate (CAS No. 10588–01–9), are subject to this section. Other examples of hexavalent chromium compounds that can be used to treat water are: Chromic acid (CAS No. 7738–94–5), chromium trioxide (CAS No. 1333–83–0), dichromic acid (CAS No.13530–68–2), potassium chromate (CAS No. 7789–00–6), potassium dichromate (CAS No. 7778–50–9), sodium chromate (CAS No. 7775–11–3), zinc chromate (CAS No. 13530–65–9), zinc chromate hydroxide (CAS No. 153936–94–6), zinc dichromate (CAS No. 14018–95–2), and zinc potassium chromate (CAS No. 11103–86–9).

(b) Purpose. The purpose of this section is to impose certain requirements on activities involving hexavalent chromium-based water treatment chemicals to prevent unreasonable risks associated with human exposure to air emissions of hexavalent chromium from comfort cooling towers.

(c) Applicability. This section is applicable to use of hexavalent chromium-based water treatment chemicals in comfort cooling towers and to distribution in commerce of hexavalent chromium-based water treatment chemicals for use in cooling systems.

(d) Definitions. Definitions in section 3 of the Toxic Substances Control Act, 15 U.S.C. 2602, apply to this section unless otherwise specified in this paragraph. In addition, the following definitions apply:

(1) Act means the Toxic Substances Control Act, 15 U.S.C. 2601 et seq.

(2) Chilled water loop means any closed cooling water system that transfers heat from air handling units or refrigeration equipment to a refrigeration machine, or chiller.

(3) Closed cooling water system means any configuration of equipment in which heat is transferred by circulating water that is contained within the equipment and not discharged to the air; chilled water loops are included.

(4) Comfort cooling towers means cooling towers that are dedicated exlusively to and are an integral part of heating, ventilation, and air conditioning or refrigeration systems.

This document is only available to subscribers. Please log in or purchase access.
Purchase Login

About SCCE

The Society of Corporate Compliance and Ethics (SCCE) is a non-profit, member-based professional association. SCCE supports our members' work with education, news, and discussion forums. We are a community of leaders, defining and shaping the corporate compliance environment across a wide range of industries and geographic regions. In developing and maintaining effective ethics and compliance programs, our members strengthen and protect their companies.

952.933.4977

About HCCA

The Health Care Compliance Association (HCCA), is a 501(c)6 non-profit, member-based professional association. HCCA was established in 1996 and is headquartered in Minneapolis, MN. We provide training, certification, and other resources to over 10,000 members. Our members include compliance officers and staff from a wide range of organizations, including hospitals, research facilities, clinics and technology service providers.

952.988.0141

Facebook Twitter LinkedIn
Copyright © 2024 by Society of Corporate Compliance and Ethics (SCCE) & Health Care Compliance Association (HCCA). No claim to original US Government works. All rights reserved. All information provided through this site, including without limitation all information such as the “look and feel” of the site, data files, graphics, text, photographs, drawings, logos, images, sounds, music, video or audio files on this site, is owned and/or licensed by SCCE & HCCA or its suppliers and is subject to United States and international copyright, trademark and other intellectual property laws. Any third party logos and/or content provided herein is owned by such third parties and is used by permission herein. Your use of this site to is subject to our Terms Of Use and Privacy Statement.
Cookie settings