Saf-T-News:
April 14th, 2004
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IN THIS ISSUE...
IN THIS ISSUE:
A CLOSER LOOK AT MAGNIFIERS
EXCAVATOR AND BACKHOE SAFETY
FYI: OSHA ALIGNS WITH ITA
FYI: OSHA DELAYS RESPIRATORY PROTECTION PROVISIONS
SAF-T-TRIVIA
A CLOSER LOOK AT MAGNIFIERS
Jewelers have used them for centuries. Printers, too. Today, as the
miniaturization of machines, microprocessors and all kinds of electronic
devices continues, magnifiers are an increasingly common tool in all
kinds of industries. They have become indispensable in production and
quality control operations, and are widely used by hobbyists, appraisers,
collectors and anyone who needs to occasionally “read the fine print.”
Magnifiers
aren’t just being more broadly applied, they are also being produced
with a broader range of power and features. Today’s magnifiers range
from single-lens simplicity to multiple-lens and self-illuminated models.
If you are looking for a magnifier that can meet the demands of your
work, here are a few of the terms commonly used to describe magnifiers
and their features.
Magnification
This is the number of times greater
than an object’s actual size that the object will appear under magnification.
It is expressed as a number followed by the letter “X.” For instance,
an object under a 5X lens will appear to be 5 times larger than normal.
This is also commonly referred to as “power.”
Field of View
This is the
area visible through the magnifier. The higher the magnification, the
smaller the lens; the smaller the lens, the smaller the field of view.
For this reason, higher power magnifiers are used for observing small
areas, while lower power magnifiers are better suited to viewing large
areas.
Focal Length
This is the distance between the magnifier and the
object being viewed at which the object appears “in focus.” If a magnifier
is being used in a process that requires work with tools, a longer focal
length allows more room for tool manipulation. Focal length is also commonly
know as “working distance.”
Diopter
This is the amount of power in a
lens needed to focus parallel light from one meter away from the lens.
It is another useful term used for describing the magnification power
of a lens.
For a wide selection of magnifiers, go to: http://www.labsafety.com/store/dept.asp?dept_id=31935. To Index
EXCAVATOR AND BACKHOE SAFETY
Anyone who operates a backhoe or hydraulic excavator, or who
works in the vicinity when one is operating, runs a risk of being
seriously injured or killed if struck by the machine or any of its
components. A recent NIOSH publication (No. 2004-107) includes summaries
of two case studies and lists possible common causes for this type
of injury. Conclusions drawn from this study led to the following
recommendations.
Before work begins, make sure that the work site has been fully
checked and prepared by following these steps:
- Contact local utilities and other responsible parties to locate
overhead and underground utility lines.
- Avoid work around overhead
power lines. If it can’t be avoided, develop a plan to ensure that
contact with the lines does not occur. The plan, along with OSHA
regulations for minimum clearance [29 CFR 1926.550(a)(15)], should
be followed carefully.
- Identify and avoid grades steeper than
those specified by the manufacturer for operation of hydraulic
excavators or backhoes.
- Keep machinery at a safe distance from
excavations such as trenches.
Just as the site should be fully prepared, the equipment operators
should be fully trained.
- Train equipment operators fully in the proper use of their
equipment. Operators should be familiar with equipment specifications
and follow the manufacturer’s recommendations carefully.
- Check
all safety features to make sure that they are working.
- Reevaluate
and adjust safety programs as work site conditions change.
- Identify
and label all machine controls clearly.
- Install, operate and
maintain all equipment attachments according to the manufacturer’s
specifications.
- Latch quick-disconnect buckets securely before
work begins and inspect frequently. Follow the manufacturer’s instructions
for using positive locks on quick-disconnect equipment.
- Operators
should conduct visual and operational checks on all machine systems
and operating controls before working the machine.
- Operators
should use the supplied seat belts!
- Operators should not exceed
load capacities when lifting materials.
- Without exception, operators
should lower the boom to a safe position with the bucket on the
ground and turn off the machine before stepping off.
Like the machine operators, anyone who will be working in the vicinity
of the equipment should also receive appropriate training.
- Anyone working at the site should be trained to recognize and
avoid unsafe conditions and to follow required safe work practices
that apply.
- Before each work shift begins, machine operators
and those working on foot should review and confirm communication
signals.
- Anyone working at the site should be aware the established
swing areas and blind spots for each machine in operation before
the machine begins operation. These areas should be marked with
rope, tape or other barriers.
- Workers attaching loads for hoisting
should wait until the operator has lowered the bucket as close
to the ground as possible.
- Workers should stay outside the hydraulic
excavator swing areas and stay clear of attachments when using
the machines for hoisting materials.
- Workers should not be allowed
to stand under suspended loads or suspended machine components
such as the boom, arm or bucket.
- Workers should not approach
the hydraulic excavator or backhoe on foot until they signal the
operator to shut down the machine and receive acknowledgment from
the operator.
- When necessary, spotters or signal persons should
be used around operating equipment.
- Workers should never ride
in or work from excavator or backhoe loader buckets.
- Appropriate
personal protective equipment should be available to workers, and
supervisors should insist that workers use and maintain it.
To view the NIOSH report, go to: www.cdc.gov/niosh/docs/wp-solutions/2004-107/default.html.
To Index
FYI: OSHA ALIGNS WITH ITA
The Industrial Truck Association (ITA) has joined the growing list
of organizations cooperating with OSHA to promote workplace safety
and health. ITA recently signed an alliance with OSHA whose purpose
is to encourage and promote operator training based on the OSHA training
standard for powered industrial trucks operation. The alliance also
places emphasis on issues concerning young workers.
To see the OSHA
news release about the alliance with ITA, go to: http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=NEWS_RELEASES&p_id=10632.
For links to OSHA information on powered trucks, go to: http://www.osha.gov/SLTC/poweredindustrialtrucks/index.html. To Index
FYI: OSHA DELAYS RESPIRATORY PROTECTION PROVISIONS
Workplaces that are required to provide respirators to employees
for tuberculosis protection have until July 1, 2004, to comply with
several provisions of the respiratory protection standard.
The announcement of this six-month extension, allows affected employers to come
into compliance with the additional requirements. Last month, OSHA
withdrew
its 1997 proposal on tuberculosis and the revocation of a separate
respiratory protection standard for workers exposed to tuberculosis.
The OSHA respiratory
protection rule is now the standard for all
industries and includes requirements that are more detailed than
those in the revoked rule: annual fit testing, medical evaluation
requirements and some training and recordkeeping provisions. Until
July 1, OSHA will not cite these new requirements for establishments
with workers exposed only to tuberculosis. To Index
SAF-T-TRIVIA
LAST WEEK'S QUESTION:
Tagout attachment devices are required to have a minimum unlocking
strength of how many pounds?
A. 50
B. 25
C. 30
D. 75
The Correct Answer is: A. 50 pounds. This week’s
winner is Patti from Wisconsin Rapids, WI. Congratulations! Patti
wins the LSS reusable lunch bag! THIS WEEK'S QUESTION:
Which agency or organization formed CHEMTREC for the purpose of
providing information to facilitate emergency response to spills
of hazardous substances?
A. Department of Transportation (DOT)
B. National Response Center (NRC)
C. Chemical Manufacturer’s Association (CMA)
D. Federal Emergency Management Agency (FEMA)
Submit your answer to mailto:SafTTrivia@labsafety.com by
Monday, April 19th! We’ll select one lucky winner from
all the correct entries we receive. If you are selected, we will
notify you by e-mail. Good Luck!
To Index
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