Smoke and heat control systems - Specifications for natural smoke and heat exhaust ventilatorsWhat is this standard about? This document applies to natural smoke and heat exhaust ventilators (NSHEV) operating as part of smoke and heat exhaust systems (SHEVS), placed on the market. This document specifies requirements and gives test methods for natural smoke and heat exhaust ventilators which are intended to be installed in smoke and heat control systems in buildings.

BS EN 777-3 does not apply to:

The test consists of breaking by one blow from a swinging pendulum

5 m support centre – a grade that is suitable for support at centres up to 1

PAS 1885 determine the organization’s security context for board-level management to establish document and maintain a record of the organization’s scope

Guidance on the acquisition of data for measuring and describing environmental noise relevant to general land use

chipping size

given a specific biometric modality

2 Descent control

Unsolicited proposals

with compliance and obedience to ISO 80369-1

BS EN IEC 60268‑21 specifies an acoustical measurement method that applies to electroacoustical transducers and passive and active sound systems

BS EN 60079-10