ISO 16784-1-2024 PDF

Full title and description

Corrosion of metals and alloys — Corrosion and fouling in industrial cooling water systems — Part 1: Guidelines and requirements for conducting pilot-scale evaluation of corrosion and fouling control additives for open recirculating cooling water systems (ISO 16784-1:2024). This part provides the framework for designing, operating and reporting pilot-scale tests used to evaluate corrosion- and fouling-control additives intended for open recirculating cooling water systems.

Abstract

This document specifies general requirements and parameters for pilot test evaluation of corrosion and scaling control additives in open recirculating cooling water systems, covering test unit design, operation, water quality and contamination, and parameters to be evaluated (including corrosion, fouling and additive compatibility). It is intended to support selection of water treatment programmes for specific recirculating cooling water systems.

General information

• Status: Published.
• Publication date: December 2024.
• Publisher: ISO (International Organization for Standardization).
• ICS / categories: 77.060 (Corrosion of metals and alloys).
• Edition / version: Edition 2 (2024).
• Number of pages: 15 pages.

Key bibliographic and lifecycle details above are taken from the ISO bibliographic record and vendor summaries.

Scope

Applies to pilot-scale evaluation of corrosion and fouling control additives for open recirculating cooling water systems only. It excludes closed cooling systems and once-through systems. The standard is written for systems that incorporate shell-and-tube heat exchangers with uncoated smooth tubes and cooling water on the tube side (other heat-exchanger types are excluded unless test conditions are set to model their surface temperature and shear stress). The document also delineates limits on the use of its criteria (e.g., not intended to constrain proprietary bench and pilot testing by water treatment manufacturers, although it may be used as guidance).

Key topics and requirements

• Test unit design parameters: construction materials, cooling tower components, heat-exchanger simulation and non-heat-transfer test coupons.
• Operating parameters: surface temperature, water velocity, residence time and flow simulation to reflect plant conditions.
• Water quality and contamination: selection and simulation of feed waters (fresh, brackish/seawater, recycled), control of biological and airborne contamination and process leaks.
• Parameters to be evaluated: corrosion (including MIC), fouling types and rates, deposit formation, and methods for evaluating corrosion and fouling in pilot-scale units.
• Water treatment additives: combination testing, compatibility of additives and guidance for comparative pilot testing of treatment programmes.
• Design and objectives of pilot-scale facilities: importance of simulating process environments, compromises between fidelity and practicality, and reporting requirements for deviations.

Typical use and users

Used by water treatment chemical manufacturers, pilot-test laboratories, plant and process engineers, corrosion and materials engineers, cooling-tower operators and end-users evaluating or selecting corrosion/fouling control programmes. It is used to design pilot tests that reproduce relevant plant conditions and to standardize criteria for comparing additive performance across candidate treatment programmes.

Related standards

References and related documents include other parts of the ISO 16784 series (ISO 16784-2 is referenced for specific fouling evaluation methods) and related guidance on cost analysis and treatment evaluation (ISO 22449-2 is cited within the standard for cost-analysis guidance). Regional adoptions (e.g., EN ISO 16784-1:2024) and national sales copies are available through national bodies.

Keywords

corrosion, fouling, cooling water, cooling tower, pilot-scale testing, additives, corrosion control, fouling control, open recirculating systems, heat exchangers, ISO 16784-1

FAQ

Q: What is this standard?

A: ISO 16784-1:2024 is an international standard providing guidelines and requirements for conducting pilot-scale evaluations of corrosion- and fouling-control additives in open recirculating cooling water systems.

Q: What does it cover?

A: It covers design and operation of pilot test units, test parameters (temperature, velocity, residence time), water quality considerations, contamination sources, methods to evaluate corrosion and fouling (including microbiologically influenced corrosion), additive compatibility and reporting of pilot-test results.

Q: Who typically uses it?

A: Water treatment product developers, independent testing laboratories, plant engineers, corrosion/materials specialists and cooling-system operators who need comparable, reproducible pilot-test methods to evaluate treatment alternatives.

Q: Is it current or superseded?

A: Current. ISO 16784-1:2024 (Edition 2, published December 2024) supersedes the previous ISO 16784-1:2006 edition.

Q: Is it part of a series?

A: Yes. ISO 16784 is a multi-part set addressing corrosion and fouling in industrial cooling water systems; Part 1 covers pilot-scale test guidelines and other parts (e.g., Part 2) address complementary methods for fouling evaluation and related topics.

Q: What are the key keywords?

A: Corrosion, fouling, cooling water, pilot-scale testing, additives, cooling towers, heat exchangers, corrosion control, fouling control.