SU1237720A1 - Method of rust-preventive treatment of ship equipment when mounting - Google Patents

Description

"

The invention relates to shipostroniyu, namely to the conservation of ship equipment during the installation and construction of ships, vessels and floating structures on the open slipway or on the floating 5g.

The aim of the invention is to simplify the preservation of shipboard equipment by eliminating the continuous maintenance of a given relative weight and sealing.

For this purpose, according to the method of preserving ship equipment by drying the room in which the equipment is mounted, the following is carried out.

Before drying, a screen with a gap of 10-100 mm is installed around the equipment or its individual surfaces, and then the volume between the screen and the equipment is dried by feeding air into the gap of dried or heated air. Such periodic drying of the preserved surfaces prevents the formation of a condensation film of moisture on them (as the molecular film is removed), thereby preventing corrosion. The drying of the surface in the volume of the screen and the product can be carried out with air with a relative humidity of 10-55%. The first value of humidity is provided by air-drying units, and the second can be obtained from. air heater or when

Compiled by N.Kruglev Editor M.Tsitkina Tehred V.Kadar. Proofreader V. But ha

Order 3263/32 Circulation 878 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, ul, Proektna, 4

202

use of air from the factory pneumatic circuit.

Critical humidity limit providing anti-corrosive

protection of products and drying them in the optimum mode, is 55%, exceeding leads to a sharp increase in corrosion.

In addition, it is advisable that

the air between the screen and the equipment was intermittently interrupted for not more than the time allowed for storage of equipment without conservation, but not less than 1 hour and with a temperature not higher than

below ambient temperature and conserved equipment. The intervals between the periodic drying of products are determined by the time allowed for the most unstable to corrosion material in the product.

The screen should be positioned so that the possibility of disturbing the flow of ambient air into the gap between the screen and the product is reduced. In order to dehumidify the air more evenly in all directions around the perimeter of the screen from the space between the product and the screen and to eliminate the possibility of a moving stream under the screen of ambient air, it is served in the center of the screen normally to the preserved surface.

Claims (1)

METHOD FOR CONSERVATION OF SHIP EQUIPMENT DURING INSTALLATION, including installation of the screen and periodic injection of air under the screen to drain the conserved surfaces, characterized in that,. in order to simplify conservation by eliminating the continuous maintenance of a given relative humidity and sealing, the screen is installed over the surface to be preserved with a gap of 10-100 mm, the orientation of the screen excludes blowing into the ambient air gap and is fed with air at intervals of at least 1 hour in the center of the screen normally to the surface to be preserved with a relative humidity of 10-55%, a temperature not lower than the temperature of the equipment and the surrounding environment. $> I in which