ANSI AWWA D104-23 PDF

Full title and description

ANSI/AWWA D104-23 — Automatically Controlled, Impressed‑Current Cathodic Protection for the Interior Submerged Surfaces of Steel Water‑Storage Tanks. This AWWA/ANSI standard establishes minimum requirements for the design, components, installation, quality control, testing, monitoring, and documentation of automatically controlled, impressed‑current cathodic protection (ICCP) systems applied to interior submerged surfaces of steel water‑storage tanks (including large wet risers). It explicitly excludes sacrificial (galvanic) anode systems and manually controlled impressed‑current systems.

Abstract

This standard provides prescriptive guidance and minimum performance/acceptance criteria for automatically controlled ICCP systems used to minimize corrosion of interior submerged steel surfaces in water storage tanks. It covers system design considerations, required system components, installation practices, commissioning, monitoring and automatic control requirements, testing and acceptance criteria, and documentation necessary for long‑term operation and maintenance. The document is intended for use in specifications, design documents, and installation/inspection work for new or retrofit tank cathodic protection projects.

General information

• Status: Active (current AWWA standard).
• Publication date: November 1, 2023.
• Publisher: American Water Works Association (AWWA); ANSI‑accredited standard.
• ICS / categories: Water supply / Water storage tanks / Corrosion control / Cathodic protection (standards for storage tanks and internal protection systems).
• Edition / version: 2023 edition — designated ANSI/AWWA D104‑23.
• Number of pages: 40 pages (standard PDF/print edition).

Scope

The scope of ANSI/AWWA D104‑23 covers automatically controlled, impressed‑current cathodic protection systems for the interior submerged surfaces of welded and bolted steel water‑storage tanks and for wet risers of elevated tanks with a diameter of 30 inches (750 mm) and larger. The standard defines requirements for system design, component selection, installation, commissioning, automatic control and monitoring, acceptance testing, and documentation. It does not apply to sacrificial (galvanic) anode cathodic protection systems or to manually controlled impressed‑current systems. Use of the standard is by reference in specifications and project documents where automatically controlled ICCP is required.

Key topics and requirements

• Definitions, terminology, and performance objectives for automatically controlled ICCP systems.
• Design criteria: current requirements, anode configuration, rectifier sizing, wiring, and isolation practices.
• Required system components and materials (anodes, reference electrodes, rectifiers, monitoring/control hardware and sensors).
• Installation and workmanship criteria for interior submerged systems and wet risers.
• Automatic control and monitoring requirements, including alarm/action thresholds and data logging.
• Commissioning, testing, and acceptance procedures (electrical tests, polarization/voltage measurements, documentation of baseline conditions).
• Inspection, maintenance, and periodic verification to ensure continued protection and system reliability.
• Limitations and exclusions (not applicable to galvanic systems or manually controlled ICCP).

Typical use and users

Primary users are water utility engineers, tank owners and operators, corrosion control specialists, consulting engineers, cathodic protection designers, and installation/contractor teams responsible for tank construction, retrofit, inspection, and long‑term maintenance. The standard is used to prepare project specifications, evaluate contractor submittals, guide installation and commissioning, and establish inspection/monitoring programs for tank interior ICCP systems.

Related standards

Related AWWA standards and documents commonly referenced with D104‑23 include AWWA D106 (sacrificial‑anode cathodic protection for tank interiors — latest edition), AWWA D102 (Coating Steel Water‑Storage Tanks), AWWA D100 (Welded Carbon Steel Tanks for Water Storage), and other AWWA storage‑tank standards; industry corrosion guidance documents and applicable NACE/AMPP guidance may also be referenced for complementary corrosion control practices.

Keywords

cathodic protection, impressed‑current, ICCP, automatic control, steel water storage tanks, wet risers, corrosion control, tank interior protection, AWWA D104, ANSI/AWWA.

FAQ

Q: What is this standard?

A: ANSI/AWWA D104‑23 is an AWWA/ANSI‑accredited standard that establishes minimum requirements for automatically controlled, impressed‑current cathodic protection systems applied to the interior submerged surfaces of steel water‑storage tanks.

Q: What does it cover?

A: It covers design, system components, installation, commissioning, automatic monitoring and control, testing, acceptance criteria, and documentation for automatically controlled ICCP systems for tank interiors and large wet risers; it excludes galvanic (sacrificial) anode systems and manually controlled ICCP systems.

Q: Who typically uses it?

A: Water utility engineers, corrosion specialists, consulting engineers, tank owners/operators, and installation/contractor personnel use this standard for specifying, designing, installing, and maintaining automatically controlled ICCP systems.

Q: Is it current or superseded?

A: D104‑23 is the current (2023) edition of the D104 series and is published as the most recent AWWA version for automatically controlled ICCP systems; previous historical editions include D104‑17, D104‑11, and earlier revisions. Confirm current status with AWWA if you need the absolute latest amendments or errata.

Q: Is it part of a series?

A: Yes — D104 is part of the AWWA storage‑tank standards series addressing tank coatings, evaluation, design, and interior protection; complementary AWWA standards include D100, D102, D106 and related documents covering coatings and sacrificial anode protection.

Q: What are the key keywords?

A: Key keywords include impressed‑current cathodic protection, ICCP, automatic control, steel water‑storage tanks, wet risers, corrosion protection, AWWA D104‑23.