You have been hired as a consultant to help a local machine
shop solve a hazardous noise problem. The shop is 10,000 square feet in area,
with 12-foot high concrete block walls, and a flat metal roof. Inside the shop
are two band saws, two metal lathes, three drill presses, one milling machine,
and three abrasive grinders. The six employees work at benches located
throughout the shop, using a variety of pneumatic-powered hand tools and
non-powered tools. A recent noise survey found sound pressure levels exceeding
100dBA in some parts of the shop. All employees were monitored for noise
exposure over an eight-hour workday, and the calculated TWA for noise for the
employees ranged from 88dBA to 97dBA.
Using the Risk Assessment Matrix in Table 11 on page 122 of
the course textbook, conduct an initial hazard analysis and risk assessment
based on the information in the scenario provided. Discuss how you arrived at
the risk level estimate.
Determine a possible control measure for each of the six
levels in the hierarchy of controls on page 208 in the course textbook, and
explain the reasoning behind each choice. For each of the selected control
measures, reevaluate the original risk. In a summary paragraph, discuss the
results and how the shop managers could determine which control measures would
be required and which others might be beneficial to their operations.
Your paper must be a minimum of two pages in length, not
counting cover page and references, and follow APA formatting for the paper, as
well as for all references and in-text citations.
On page 208 of my book there are 6 Hierarchy of controls of
Z10 as stated by my given text book
A.
Elimination.
Examples would be to eliminate the risk
from, fall hazards, ergonomic hazards, confined space hazards, noise hazards,
or chemical hazards.
B.
Substitution of Less Hazardous Materials,
Processes, Operations or Equipment Operations
Examples include using automated material
handling equipment, providing automatic feed system to reduce machine hazards,
using less hazardous cleaning materials, reducing speed, force, amperage.
Reducing pressure or temperarture, replacing an ancient steam heating system
and its boiler explosion hazards with a hot air system
C.
Engineering Controls
These include. Machine gaurds, interlock systems, circuit breakers, start
up alarms, prescence- sensing devices, safetynets and ventilation systems
D.
Warnings
These include Smokedetectors, Alarm systems, Backup
alarms, Chemical detection systems, signs and alerts in operating proceedures
or manuals.
E.
Administrative Controls.
These include.Personnel Selection. Developing appropriate work methods
and procedures,training, supervision, Motivation, behavior modification, work
scheduling, job rotation and investigations and inspections.
F.
Provide Personal Protective Equipment.
This includes safety glasses, face shields, safety shoes, respirators,
gloves, welding screens, and hearing protection.
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