Page 234 - Safety Memo

6. Guying and supporting of all rebar for walls, piers, columns, 4. Concrete pier columns
and similar vertical structures are required. 5. Sewers
7. Wire mesh rolls shall be secured to prevent dangerous 6. Storm drains
recoiling action. 1711
7. Enclosed beams
F. Concrete finishing
8. Vessels
1. Powered finishing tools must be equipped with a dead-man-
type control. 9. Cesspools
10. Turbines
2. Bull float handles must be constructed of a nonconductive
material if they could come into contact with energized C. A permit-required confined space is defined in 1951 as a
electrical conductors. confined space that also has one or more of the following
characteristics:
Confined Spaces 1. Contains or has a potential to contain a hazardous
atmosphere.
Every year several confined space entrants and would-be rescuers 2. Contains a material that has the potential for engulfing an
die from hazards, such as oxygen deficiency, toxic and explosive entrant.
atmospheres, engulfment, and uncontrolled energized equipment.
To prevent such accidents, employers must be able to: 3. Has an internal configuration such that an entrant could be
trapped or asphyxiated by inwardly converging walls or by
• Recognize confined spaces and which of them are a floor, which slopes downward and tapers to a smaller
permit-required confined spaces. cross-section.
• Know, understand, and effectively implement T8 CCR 4. Contains any other recognized serious safety or health
Article 37 (1950-1962) and 5158 requirements. Section hazard.
5158 contains certain requirements not found in Article D. Before starting work at a worksite, the employer must have a
37. competent person identify all confined spaces and permit-required
A. A confined space is defined in 1951 as a space that exhibits confined spaces in which the employer’s employees might work.
1952(a)
the following characteristics:
E. Exposed employees at the worksite must be informed of any
1. Is large enough and so configured that an employee can bodily permit spaces by posting danger signs or by any other equally
enter it. effective means. Employees’ authorized representatives and the
controlling contractor must also be informed – by other than
posting - of the existence, location, and danger posed by each
2. Has limited or restricted means for entry and exit. permit space. 1952(b)
3. Is not designed for continuous employee occupancy. F. Whenever possible, employees should avoid entering these
spaces or use equipment that allows work to be done from the
B. The following are examples of some of the locations that may outside. If employees must enter:
exhibit confined-space conditions. 1950(a): 1. The employer must comply with the applicable Cal/OSHA
regulations in T8 CCR. These include:
1. Pits (such as elevator, escalator, pump, valve, or other
equipment) • Section 1509 (Injury and Illness Prevention Program)
2. Manholes (such as sewer, storm drain, electrical, • Article 6 (Excavations)
communication, or other utility) • Article 37 (Confined Spaces in Construction) of the
3. Tanks (such as fuel; chemical; water; or other liquid, solid, or Construction Safety Orders
gas)

26 Cal/OSHA Pocket Guide for the Construction Industry June 2019 Cal/OSHA Pocket Guide for the Construction Industry | June 2019 27