тесты ТРПБ 200-250

What do we call industrial building aeration?

• Organized and controlled natural air exchange

• Uncontrolled mechanical air exchange

• Air suction ventilation that removes dusty air

• Unorganized natural air exchange

• Organized and controlled mechanical air exchange

Physically dangerous and harmful factors in production include:

• Dusting, gasification

• Toxic substances and their compounds

• Electromagnetic a.

• Radiation

• Stressful work

Ventilation is classified according to the method of displacement of the removed or supplied air in the room:

• Natural and mechanical

• Universal and local

• Anti-smoke and mixed

• Stretchable and flowing

• Mixed and emergency

For testing steel ropes, a sample of the following length is taken from each wing:

• 1m for rope made of light wire

• 5-10m for a rope made of light wire

• 1.5-2 m for ropes made of zinc-coated wire

• 1 m to check the mechanical abilities and quality of the zinc coating

• according to MEST3241-66

Calculation of the strength of chains takes into account the following parameters:

• The actual loss value of the general rope accepted according to the certificate, and during design according to MEST data (laboratory research certificate or acts), H

• Diameter of drum and blocks D

• The magnitude of separation of one wire in the diameter of the given group

• The number of wires of each group according to the diameter selected for the test

• Number of wires of each group by diameter

Progressive non-contact densities are as follows:

• Disk, wing, mixed

• Radial and umbilical

• Navel and screw

• Rotor and radial

• Starter and auger

Materials not used for the density of moving parts of mechanisms:

• Glass, concrete, wood

• Fluoroplast, polymer

• Rubber, plastics

• Metals, their types

• Plastics and polymers

Cuff densities are :

• Press spring

• Chevron cuff

• Attached shutter

• Seal

• Fixed ring

Release of equipment to the open area causes the following conditions:

• The condition of repair work will improve

• The technological process is disrupted

• Fire fighting service becomes more difficult

• Small restrictions are placed during automation of production

• The process of evacuating personnel from the facility becomes difficult

Unsealing of devices and installations shall not be performed in the following cases:

• When observing technological regulations

• In case of problems during production, installation, copying

• When explosive mixtures are formed

• When it is not properly included in the work

• During indirect processes in the facilities