Mounting of thresholds in the door openings on the ways of evacuation higher
that 0,05 m, isn’t allowed.
Open storehouses of ethyl alcohol are located in the open platforms in reservoirs
and packages. It’s allowed to locate them under the shed with a net fence. The
reservoirs are mounted on concrete (metal) supports, raised over the level to concrete
watertight covering (incline to a rain-receiver – 1,0 %) – not more than 1,0 m for
examination of a reservoir bottom. For protection against sunlight they are painted with
light colours. Ground reservoirs are protected by the wall or solid ground shaft. The
volume, created by the wall or ground shaft, must be equal to the full capacity of the
biggest reservoir. The height of the outer fence must be by 0,2 m higher that the
calculated level of the liquid that spilled, but not more than 1,0 m and the width of the
solid shaft from above – 0,5 m. The distance from the walls of reservoirs to the
basement of the inner slopes of the ground shaft or protecting walls is not less than
3,0 m.
Distance between ground reservoirs, that are located in one group is not less than
0,5 diameter of the ground reservoir.
When choosing reservoirs for storage of HIL, additional reservoirs, designed for
emergency overflow, which aren’t included in the calculation of the general capacity
of the storehouse, are provided. They are constantly empty, Washed and cleaned from
HIL Vapours. In this situation, setting up of special emergency capacities outside the
building isn’t foreseen. Emptying of reservoirs for storage of HIL must be carried out
by food pumps into reserve reservoirs of the storehouse or special emergency ones.
The capacity of the emergency reservoir must be not less than the capacity of the
biggest reservoir of the storehouse.
An emergency discharge of HIL is carried out from one of the closed hermetic
apparatuses under excessive pressure of water vapour or inert gas. The pipelines for
emergency discharge should be of minimum extension, with minimum amount of
turnings and branches and incline not less than 0,2 % to the side of emptying. The
pipelines mustn’t have key accessories, except disconnecting accessories of the
apparatuses and reservoirs.
It a gravity flow of EJL is carried out into an emergency reservoir, then the
diameter of the pipeline must be not less than 100 mm with the devices which warn
against the possibility of fire spreading. The pipeline must have a key device. The
emergency reservoir is located outside the building at the distance of not less than 1 m
from the walls without openings and not less than 5 m from the walls with openings.
The equipment, apparatuses, communications and accessories in the premises of
A and B categories must be hermetic, from the materials, which don’t create sparks.
For technological apparatuses which require constant observation, the premises
(cabins, compartments) are equipped with hermetic inspection windows of minimum
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