# ISO 9612:2009 — Withdrawn and superseded ISO standards For ISO 9612:2009, item title is Acoustics — Determination of occupational noise exposure — Engineering method; status code is 9599; successor is ISO 9612:2025; withdrawn / published date is 2009-03-23, recorded from its source on 2026-08-05. - **Identifier:** ISO 9612:2009 _(verified: appears in the quote below)_ - **Item title:** Acoustics — Determination of occupational noise exposure — Engineering method _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 9612:2025 - **Withdrawn / published date:** 2009-03-23 _(verified: appears in the quote below)_ ## What the source says > 41718,IS,,ISO 9612:2009,Acoustics — Determination of occupational noise exposure — Engineering method,Acoustique — Détermination de l'exposition au bruit en milieu de travail — Méthode d'expertise,2009-03-23,2,['13.140'],ISO/TC 43/SC 1,9599,[17425],[81317],"['en','fr']",43,"

ISO 9612:2009 specifies an engineering method for measuring workers' exposure to noise in a working environment and calculating the noise exposure level. ISO 9612:2009 deals with A-weighted levels but is applicable also to C-weighted levels. Three different strategies for measurement are specified. The method is useful where a determination of noise exposure to engineering grade is required, e.g. for detailed noise exp ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).