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Installation and construction of inspection hatches in the duct
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Installation and construction of inspection hatches in the duct

Any ventilation system consists of a variety of different air ducts of different sizes and shapes. In order to access the inner surface of ventilation ducts, it was decided to use inspection (inspection) hatches.
Installation of inspection (audit) hatches is not only a useful measure, but also mandatory in terms of legislation (regulated by the Fire Safety Rules). The presence of inspection hatches reduces the complexity of the service of the ventilation system, and makes it easy to conduct an inspection of any part of the air ducts. It is also important that the presence of inspection hatches allows cleaning and disinfection of air ducts throughout the length without their complete or partial parsing.

Thanks to the proper placement of audit hatches in ventilation systems, sanctions imposed by fire and sanitary services can be avoided. In particular, the mandatory inspection hatches are regulated (p.5.3.9) by the order of the Ministry for Emergencies “On Approval of Fire Safety Rules in Ukraine (NAPB A.01.001-2004)”. Also, the correct placement of inspection hatches simplifies service and inspection of the ventilation system, which can significantly reduce the cost of service due to the need to use specific equipment, complex equipment.

As a rule, inspection hatches have different sizes, can be used for ducts of round and rectangular section.

The design of the inspection hatches allows quick opening and hermetic closure of the inspection holes. Inspection hatch is mounted, in particular, on the front or rear walls of such built-in devices as heat exchangers, steam humidifiers, tunnel filters, mufflers, fire extinguishers, fans, measuring gauges, as well as taps and bends.

Inspection hatches used by Forline, made in the EU of galvanized steel, and provide a high level of tightness and fire resistance. Under the influence of high temperature during the fire, inspection hatches retain their sectional structure even when the fuses are melted.
Forlin’s cleaning company uses inspection hatches in the work to clean ventilation, and also sells them.