Ajax Vehicles: Noise

To ask the Secretary of State for Defence, with reference to statement by the Defence Procurement Minister on 15 December 2020 on the AJAX programme; when it was established that noise and vibration issues in AJAX vehicles were above the statutory limit; and what the legal basis for that limit is.

Answered on

5 January 2022

As detailed in the Ministry of Defence (MOD) HS&EP Noise and Vibration Review report dated November 2021 (paragraph 35) the legal basis for noise and vibration limits on Ajax is the Control of Noise at Work Regulations 2005 and the Control of Vibration at Work Regulations 2005.

The MOD HS&EP review found that General Dynamics had issued an internal safety notice for external noise on a prototype vehicle in 2014 (paragraph 37). The first MOD safety notice, which related to vibration on the ARES vehicle, was issued in December 2018 (paragraph 39). These safety notices aimed to maintain a safe system of operation.

The Institute of Naval Medicine investigated noise and vibration levels on the vehicle and in its report, received in December 2020, stated that noise and vibration exposure of crew inside the ARES vehicles is likely to exceed the exposure action values for noise and vibration, as specified in the regulations. It therefore recommended further measures to reduce risk.

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