ISO 7076-4-2016 PDF

Full title and description

Fire protection — Foam fire extinguishing systems — Part 4: High expansion foam equipment (ISO 7076-4:2016). Specifies performance, construction, test methods and marking requirements for high-expansion foam equipment used in fixed foam-extinguishing systems for indoor and/or outdoor applications.

Abstract

ISO 7076-4:2016 defines requirements and test procedures for high expansion foam equipment (generators, nozzles and related devices) intended for use in fixed foam fire-extinguishing systems. The document covers classification, performance criteria (including expansion ratio and drainage characteristics), mechanical and connection requirements, material compatibility with foam concentrates, type and routine testing, and marking/documentation to ensure reliable operation when high expansion foam (typically very high expansion ratios) is specified.

General information

• Status: Published (confirmed in ISO 5-year review, 2022)
• Publication date: July 2016 (1st edition — published 7 July 2016)
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 13.220.10 (Fire-fighting; fire protection systems)
• Edition / version: Edition 1 (2016). Confirmed in ISO review (R2022).
• Number of pages: 11

Scope

This part of ISO 7076 applies to high expansion foam equipment intended for fixed-foam extinguishing systems used indoors, outdoors, or both. It establishes functional and safety requirements, test methods and marking for equipment that produces high expansion foam (equipment designed to generate foams with very high expansion ratios). The standard does not cover foam proportioning equipment in general (addressed in other parts of the series) nor the detailed design of pumps, drives or other ancillary plant covered by unrelated equipment standards.

Key topics and requirements

• Definitions and classification of high expansion foam equipment (including criteria for what constitutes high expansion foam).
• Performance tests: measurement of expansion ratio and foam drainage characteristics (e.g., 50% drainage time) under specified test conditions.
• Flow and nominal capacity requirements: methods to determine rated flow and operational ranges for equipment.
• Mechanical and connection requirements: strength, permanent joints, and conformity of threads and flanges with recognized standards.
• Materials and corrosion/chemical compatibility: suitable materials and protection when in contact with foam concentrates and service environments.
• Type and routine testing procedures, including acceptance criteria for manufactured items.
• Marking and documentation requirements: manufacturer identification, type designation, rated flow/pressure, performance data and instructions for safe installation and maintenance.
• Safety and environmental considerations relevant to equipment operation and maintenance.

Typical use and users

Applied by manufacturers of high expansion foam generators and nozzles, test laboratories, fire-protection system designers and specifiers, installation and commissioning engineers, authorities having jurisdiction (AHJs), and facility owners/operators where large-volume spaces (e.g., hangars, warehouses, enclosed plant rooms, tunnels and other enclosures) require high-expansion foam solutions for smoke control, fire suppression or vapor control.

Related standards

ISO 7076 is a multi-part series. Closely related parts and complementary standards include ISO 7076-1 (foam proportioning equipment), ISO 7076-2 (low expansion foam equipment), ISO 7076-3 (medium expansion foam equipment), ISO 7076-5 (fixed compressed air foam equipment) and ISO 7076-6 (vehicle-mounted compressed air foam systems). Additional related standards cover foam concentrates and performance testing of extinguishing media.

Keywords

high expansion foam, foam equipment, foam generators, foam nozzles, foam drainage, expansion ratio, fire protection, fixed foam systems, ISO 7076, foam testing, marking, equipment requirements

FAQ

Q: What is this standard?

A: ISO 7076-4:2016 is an international standard that specifies requirements and test methods for high expansion foam equipment used in fixed foam fire-extinguishing systems.

Q: What does it cover?

A: It covers classification, performance criteria (expansion and drainage), mechanical and connection requirements, material compatibility, testing (type and routine), and marking/documentation for high expansion foam equipment designed for indoor and/or outdoor fixed installations.

Q: Who typically uses it?

A: Manufacturers, system designers, testing laboratories, installation and commissioning personnel, fire authorities and facility owners/operators specifying or verifying high expansion foam systems.

Q: Is it current or superseded?

A: The standard was published in July 2016 (1st edition) and was reviewed and confirmed in ISO's 5-year review cycle in 2022; it remains current (confirmed) as of that review.

Q: Is it part of a series?

A: Yes — ISO 7076 is a multi-part series covering foam fire-extinguishing systems: Part 1 (proportioning), Part 2 (low expansion), Part 3 (medium expansion), Part 4 (high expansion) and other parts addressing compressed-air foam and vehicle-mounted systems.

Q: What are the key keywords?

A: High expansion foam, expansion ratio, drainage time, foam generator, foam equipment, fixed foam system, foam testing, ISO 7076, fire protection.