Safety of formwork works (1983)

Hydroelectric dam.

Construction work on the dam.

A dump truck unloads concrete.

A bucket of concrete is lifted by a crane to the top of the dam.

Types of formwork used in power engineering construction are demonstrated.

A project for carrying out work using formwork.

Formwork work at a height of more than five meters.

This work is considered high-risk work.

A work permit for carrying out such work.

Responsible work manager.

Crane operator.

Formwork fitters.

A welder working with formwork.

A certificate of knowledge of safety rules and instructions and technical operation.

Requirements for the installation and dismantling of formwork.

The boundaries of hazardous areas must be marked with warning signs.

The sign "Admission of unauthorized persons to the work area is prohibited." To prevent spontaneous unslinging of the formwork, the hooks of the slings, crossbeams and other removable devices must be equipped with safety locks.

Load lugs with bolted or ring connections are attached to the crane hook.

Formwork units are demonstrated.

Moving the formwork.

It is held in place by flexible guy ropes.

It is prohibited to wind the guy rope around your hand.

It is prohibited to install the formwork in winds exceeding 10 meters per second.

Lunch time.

It is prohibited to leave raised structures hanging during the break.

Installing the formwork.

The worker climbs the extension ladder, which is strictly prohibited.

Unslinging the formwork is allowed after it has been secured according to the design.

A sign that all workers must have safety belts.

Securing the formwork and sealing the anchors.

A representative of the construction laboratory gives permission for concreting.

The crane carries a bucket of concrete.

Vibrators are in operation to compact the concrete.

It is prohibited to dump the concrete mix from a height higher than the design height.

The worker monitors the condition of the formwork.

It is prohibited to move around the concreted space if the concrete strength is less than 15 kg per sq. cm.

When removing the lower tier of formwork, it is prohibited to fasten it to the upper tier to protect it from possible collapse, unless the latter has additional fastenings provided for by the design.

Disconnection of fasteners.

It is prohibited to use a crane to tear off the formwork.

It is necessary to use jacks, winches and other devices.

Installation of a concrete heating unit.

Installation restrictions based on power source voltage.

Protective fencing for the heating zone.

The worker inspects the fencing.

All people, except the observer, are removed from the heating zone.

The formwork is dismantled only after it has been de-energized.

Measuring the temperature of the outer concrete layer.

The construction laboratory personnel conduct concrete tests and, based on these tests, set the formwork removal date.

Checking the concrete strength.

A concrete transport vehicle enters a tunnel, a sign in front of the entrance.

Continuous flooring over the tunnel passage.

Anti-theft grips on horizontally movable rolling formwork.

Dismantling the formwork in tunnels.

The worker leaves the formwork before moving it.

Moving the formwork.

Sliding formwork.

Construction of a cooling tower.

Workers check the compliance of all load-bearing elements with the design, the integrity of welded and bolted joints, the technical condition of the lifting equipment and load-bearing elements of the working floor.

Laying the concrete layer.

Extension of jack rods by a team of at least 2 people.

The joints of the jack rods must be at different levels.

Raising the formwork to a new level.

Panoramic view of the interior of the cooling tower.

Welding work at night.

Illumination of workplaces at night.

Lighting devices must not create sharp light contrasts, shadows and glare.

Power transmission line support.

Dam in fog.

Work on the formwork in adverse weather conditions is prohibited.

Workers clear the formwork from snow before installation and construction work.

Device for heating the welder's hands.

Welding work during installation and dismantling of formwork containing wooden elements.

Availability of fire-fighting equipment when carrying out such work.

A stand with fire-fighting equipment.

Panoramic view of the hydroelectric dam under construction.