Page 44 - Safety and health in construction

Safety and health in construction

6.3. Bulldozers

6.3.1. Before leaving a bulldozer the operator should:

(a) apply the brakes;
(b) lower the blade and ripper;

(c) put the shift lever in neutral.

6.3.2. At the close of work bulldozers should be left on level ground.

6.3.3. When a bulldozer is moving uphill the blade should be kept low.

6.3.4. Bulldozer blades should not be used as brakes except in an emergency.

6.4. Scrapers

6.4.1. The tractor and scrapers should be joined by a safety line when in
operation.

6.4.2. Scraper bowls should be propped while blades are being replaced.

6.4.3. Scrapers moving downhill should be left in gear.

6.5. Mobile asphalt layers and finishers

6.5.1. Wooden floors in front of the sprayers should be covered with corrugated
sheet metal.

6.5.2. The mixer elevator should be within a wooden or sheet-metal enclosure
which should have a window for observation, lubrication and maintenance.

6.5.3. Bitumen scoops should have adequate covers.

6.5.4. The sprayer should be provided with a fire-resisting shield with an
observation window.

6.5.5. To avoid fire risks due to foaming:

(a) boilers should have a device that prevents foam from reaching the burners; or
(b) only non-foaming products should be used.

6.5.6. When asphalt plants are working on public roads, an adequate traffic
control system should be established and reflective jackets provided for the workers.

32