Page 109 - Safety Memo

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6. Temperature, illumination, sanitation, and ventilation as Ramps and Runways
per 6100. Ventilation in the locks and chambers, with
the exception of the medical chamber, shall be such that Regulations concerning ramps and runways are as follows:
the air quality meets the requirement of Section 5144(i).
Ventilating air shall be not less than 30 cubic ft. per A. General requirements
minute per person. 6100 1. Ramps must be properly designed to provide a safe
7. Providing forced ventilation during decompression to means of access for foot or vehicle traffic.
ensure a source of fresh air. 6100(f) 1623, 1624, 1625
8. Taking one, or both, of the following steps when 2. Open sides of ramps that are 7 1/2 ft. or more above
an oxygen breathing gas system is used during ground must have standard guardrails. 1621(a)
decompression, to ensure that the concentration of B. Foot ramps
oxygen inside the chamber or lock does not exceed
twenty five percent (25%) by volume: 6100(i) 1. Foot ramps must be at least 20 in. wide and must be
secured and supported to avoid deflection or springing
a. The oxygen breathing gas system shall capture the action. 1624(a)
oxygen that is not consumed by the user and directly
exhaust it to a well-ventilated area outside of the lock 2. If the ramp slope exceeds 2 ft. of rise for every 10 ft. of
or chamber. run, cleats must be 8 in. or more in length and must be
placed not more than 16 in. apart. 1624
b. An oxygen meter shall be used to continuously
monitor the oxygen concentration inside the chamber C. Wheelbarrow ramps and runways
or lock. 1. Wheelbarrow ramps and runways must be firmly secured
9. The employer retaining a supervising physician who against displacement. 1624(c)
shall be available at all times while pressurized work is 2. Ramps more than 3 ft. high must be 30 in. wide, and
in progress in order to provide medical supervision of planks must be firmly cleated together. 1623
employees employed in compressed air work. 6120
3. Falsework design loads must be increased by 10 psf for
10. Following fire prevention and oxygen safety requirements worker-propelled carts. 1717(a)
as specified in 6115.
C. Employees who are exposed to or control the exposure of
others to hyperbaric conditions shall be trained in hyperbaric Roofing Operations
related physics and physiology, recognition of pressure
related injuries, and how to avoid discomfort during Working conditions at roofing projects are often difficult and
compression. 6075 continuously expose workers to serious hazards. In California
one of the most common causes of work-related deaths is falls
from roofs. Injuries common to the roofing industry include (1)
Qualified Person broken bones because of falls; (2) back injuries because of
awkward postures and heavy lifting; and (3) burns from contact
A qualified person is a person designated by the employer; with hot roofing asphalt and associated equipment.
and who by reason of training, experience, or instruction has Roofing operations are classified as either single-unit or multi-
demonstrated the ability to perform safely all assigned duties; unit. Examples of single-unit (monolithic) roofing are built-up
and, when required, is properly licensed in accordance with roofing, flat-seam metal roofing, and vinyl roofing. Examples of
federal, state, or local laws and regulations. 1504 The CSOs multi-unit roofing are asphalt shingles, cement, clay and slate
refer to a Qualified Person in several of the regulations.
tile, standing seam metal panels, shingle metal roofing, and
wood shingles.

106 Cal/OSHA Pocket Guide for the Construction Industry | June 2015 Cal/OSHA Pocket Guide for the Construction Industry | June 2015 107