ISO 29461-1:2021
Air intake filter systems for rotary machinery - Test methods - Part 1: Static filter elements

Standard No.

ISO 29461-1:2021

Release Date

2021

Published By

International Organization for Standardization (ISO)

Latest

ISO 29461-1:2021

Scope

This document specifies methods and procedures for determining the static performance of particulate air filters used in air intake filter systems for rotary machinery such as stationary gas turbines, compressors and other stationary internal combustion engines. It applies to air filters with an efficiency of 85 % or more for the MPPS (EPA and HEPA filters) which are tested according to ISO 29463 (all parts) and filters with a lower efficiency which are tested according to ISO 16890 (all parts). The procedures described in both ISO 16890 (all parts) and ISO 29463 (all parts) are applied and extended by this document to air filters which operate at flow rates within the range 0,24 m3/s (850 m3/h) up to 2,36 m3/s (8500 m3/h). Static filter systems normally use multiple stages of coarse, fine and optional EPA or HEPA filter elements to protect the machinery. The scope of this document includes methods for performance testing of individual filter elements. It does not include methods for the direct measurement of the performance of entire systems as installed in service except in cases where they can meet the qualification criteria for the test assembly. Nevertheless, cumulative filter efficiencies of multistage systems of fine filters can be calculated by using the methods described in ISO 16890-1. This document refers to static (barrier) filter systems but can also be applied to other filter types and systems in appropriate circumstances, for example to evaluate the initial efficiency of cleanable and surface loading filters. The performance results obtained in accordance with this document cannot be quantitatively applied (by themselves) to predict performance in service with regard to efficiency and lifetime.

ISO 29461-1:2021 Referenced Document

• ISO 15957 Test dusts for evaluating air cleaning equipment
• ISO 29464 Cleaning of air and other gases - Terminology

ISO 29461-1:2021 history

• 2021 ISO 29461-1:2021 Air intake filter systems for rotary machinery - Test methods - Part 1: Static filter elements
• 2013 ISO 29461-1:2013 Air intake filter systems for rotary machinery - Test methods - Part 1: Static filter elements