JAC Safety Manual - Chapter 4: General Safety & Laboratory
Policies
CHAPTER 4:
GENERAL SAFETY AND LABORATORY POLICIES
A. General Use, Care and
Maintenance
of Equipment
1. Policy
All equipment will be used,
cared for and maintained in a safe
manner.
Only necessary, properly functioning and safe equipment will be kept in
work areas. Broken equipment awaiting repair shall be clearly marked
with
an Engineering and Technical Services (ETS) yellow tag. These can
only be issued by ETS staff. Outside of normal working hours a tag can
be
obtained by contacting an ETS staff member.
2. Responsibilities
- Supervisor
- Ensures employee is aware
of and follows the
requirements for
the use,
care and maintenance of equipment.
- Periodically surveys and
inventories all
equipment in the area
of
responsibility.
- Designates an individual
who is responsible
for the maintenance
and
proper
function of each major instrument or piece of equipment.
- Employee
- Inspects equipment before
each use.
- Maintains all the equipment
they use or for
which they are
responsible.
- Provides regular preventive
maintenance in
order to attain or
prolong
the
service life of equipment.
- Immediately initiates
appropriate repair
requests on all
malfunctioning
equipment.
- Site Safety Advisor
- Assists in designating equipment in need
of repair,
storage
or disposal.
- Maintains record of ETS yellow tags.
- Engineering and Technical
Services
- Modifies or repairs equipment
so that it
conforms to fire and
electrical
codes and OSHA regulations and policies such that it can be used safely.
- Expediently repairs, when
possible and
practical,
malfunctioning
equipment.
Disposes of equipment otherwise.
- Removes unsafe equipment from
service via a
yellow ETS
tag. A
record
of all yellow tags is kept by the Site Safety Advisor.
3. Procedure
NOTE: Equipment removed from service
via
a
yellow
ETS tag may only be returned to service by the person signing the tag
or
by the Chief Engineer. Failure to comply with this policy will
result
in disciplinary action. Authorized removal of the tag indicates that
the
equipment is safe to use.
- All equipment must be inspected
before use.
Portable electrical
equipment
and any item subject to frequent handling shall be inspected every
time
it is used. Stationary items such as computer equipment will not
require
such frequent inspection. Defective items will be either repaired or
scrapped.
- Equipment will be maintained in safe
operating
conditions.
- Frayed electrical cords
and plugs will be
repaired or destroyed.
- Electrical plugs will be
3 pronged and
all outlets will be
grounded.
NOTE: Equipment which is double insulated may not require 3
pronged plugs. If in doubt, check with the Site Safety Advisor.
- Fluid leaks in equipment will be
fixed
immediately. Use of
the
equipment
is not allowed until the leak is fixed.
- Malfunctioning or broken
switches, knobs,
valves, gauges,
indicators, alarm
or warning devices will be replaced or fixed immediately.
- Other forms of good
technique in the use,
care and
maintenance of
instruments
and equipment must be carried out by the users in accordance with
manufacturer's
recommendations.
B. Visitors
1. Policy
All visitors entering JAC buildings, grounds, or
facilities
must comply with applicable health and safety policies and procedures.
2. Responsibilities
- JAC Visitors
Coordinator
Is responsible for coordinating support for visitors of two
months
or longer. For visiting observers or casual visitors see below.
- JAC staff member associated with
the visitor
Escorts visitors; provides safety instruction and equipment
as
needed
in accordance with the procedures in this section.
- Site Safety Advisor
Ensures availability of protective equipment for visitors
and
participates
in enforcing the JAC's visitor policy.
3. Procedures
- Associated staff member. All
visitors
must have a JAC
staff
member
associated with them. In the case of long-term visitors (students and
the
like), this will normally be the supervisor. In the case of visiting
astronomers,
this will be the support astronomer or in their absence, the telescope
scheduler. In the case of short-term visitors and casual visitors, it
will
be the person inviting them to the JAC. In all cases, it is the
responsibility
of this JAC staff member to ensure that the visitor is aware of, and
follows,
all relevant JAC safety procedures.
- General provisions:
- Visitors should normally
sign in at the
receptionist desk upon
entry to
the JAC.
- Visitors entering
laboratories, shops and
other hazardous areas
must be
escorted by a JAC employee.
- Restricted areas may be
visited only by
permission of the
supervisor in
charge of the restricted area.
-
Information for visitors:
- Visiting observers are
issued a standard
packet of information
whose
contents
include the following safety related information:
- Registration on arrival
- Use of JAC Vehicles
- JAC Policy on Stays at
High Altitude
- Operating Instructions
for JAC Vehicles
- Medical Alert Waiver
- Red and yellow emergency
cards
-
Other visitors who are with
JAC for less than
two months will
be issued
with the visitor's information packet (for summit visitors) or with a
single
sheet safety summary (Addendum 5)
-
Co-Op students who will remain at JAC for more than
two months will be given an initial briefing on Chapter
2 of the JAC Safety Manual, and on Chapter 9
before their first visit to any JAC summit facility by the student's
direct supervisor, and backed up with suitable tours of the buildings
to locate fire exits and pull points. In this case they must sign the
memo in Addendum 6.
-
Visitors who are with
JAC for longer
will be given access
to a
copy of
the full manual and must be briefed on it by their associated staff
member
or a relevant deputy. In this case they must sign the memo in Addendum
6.
- Visitors to JAC sea-level
facilities:
- Children under 16 years old
must be properly
supervised and
under the
charge
of an adult while at JAC.
- Large tour groups
must be given
permission by the JAC
Director
prior to
the visit and must be escorted by an appropriate number of JAC escorts.
A risk assessment must be performed prior to the visit.
- Visitors to summit
facilities: See the
provisions in Chapter
9 section G 2 d for summit
visitors
and follow the link there to the policy for summit visits.
- Parties
of
visitors for more
than one
day:
- Where a party of visitors
will be at the JAC
(for example to
use or
commission
a new or visiting instrument), extra care must be taken that all
members of the
party
are familiar with the relevant safety rules and procedures. The
visiting
team is required to produce an outline plan of their activities and
complete
the VIP Guidelines, Addendum 10, in
advance. These are
to
be reviewed by the associated JAC staff member. The review need not be
long or complex, and particular points to bear in mind are:
- Who will all the team
members be, including
those who arrive
during the
run?
- What are the dates of arrival of the individual
team members?
- How will EVERY member of
the team be
briefed on safety?
- Are there any special
hazards such as
cryogens involved?
- Will there be weekend
working involved?
- What will the supervision be?
- If needed, the assistance
of other staff
shall be sought in
carrying
out
this review.
- Personal protective
equipment for visitors
- Chapter
3 of the
manual describes
provisions for
personal protective equipment (PPE) including safety boots, protective
eye wear and hearing protection.
- Visitors who are to
be with the JAC for
longer than two
months
will be
provided with PPE by their employer or, failing that, by the JAC. Any
equipment
provided by JAC remains JAC property and shall be returned. Visitors
of
shorter duration will need to make their own provisions unless suitable
spare equipment is available at JAC and can be loaned. Note that if
suitable
equipment is not available then the tasks must not be carried out.
C. Working Alone in Hilo
1. Policy
Working alone is only allowed when it can be done safely.
Specific
examples of hazardous activities are given below. Policy on working at
the summit is covered under Chapter 10.
2. Responsibilities
- Supervisor
Schedules work procedures to minimize potential hazards
of
working alone.
- Employee
Consults with supervisor as necessary to schedule work
done
after hours or otherwise in isolation.
3. Procedures
- When working under
potentially
hazardous
circumstances, employees are normally accompanied. The level of
proximity
required will vary according to circumstances and the supervisor will
need
to exercise discretion and shall consider a risk assessment to help
focus
on the issues. Typical potentially hazardous work includes:
- Moving equipment.
- Welding
- Oxy-acetylene cutting
- Working with machine shope tools and equipment
- Electrical work (see
Chapter 12)
- Any work requiring a ladder
- Work involving use of lasers
- Work with cryogens
- Work on high pressure
or vacuum equipment
- Work involving
hazardous/flammable liquids
-
When working outside of
normal
hours
employees shall secure the building upon leaving and follow the "Late
Working Procedures" located in the JAC Internal Web.
D. Laboratory and
Housekeeping
Policies
1. Policy
This section sets policy and procedures on laboratory and
general
housekeeping
safety topics.
2. Responsibilities
- Supervisor
Ensures that the policies are implemented by routine
inspection
of
the work place and by allocating sufficient time and other resources to
allow them to be accomplished.
- Employee
Carries out all work in accordance with the procedures
below.
Alerts
supervisor to any infringements of the policy or procedures.
- Site Safety Advisor
Schedules periodic inspections and alerts supervisor to any
infringements
of the policy or procedures.
3. General Procedures
-
Good housekeeping is essential for
laboratory
and office safety.
Shelves,
bench tops, and floors must be free of unnecessary apparatus and
materials.
-
Doorways and aisles must
not be blocked.
-
Scientific apparatus must
be away from
the edge of the
bench,
leaving adequate
room to work and reducing the possibility of an accident.
-
All bottles and
containers holding
chemicals shall be
accurately
and clearly
labeled. Whenever possible, hazards and necessary precautions shall
also
be included on the label. All unlabeled or illegibly labeled
chemicals
are subject to immediate disposal. See further information in Chapter
6 section A3c.
-
Heavy items should be
placed near the
floor.
-
Laboratory equipment with
moving parts
(e.g. vacuum pumps,
etc.)
will have
necessary safeguards in place.
-
Laboratory reagents
containers will not
be used for food or
drink.
-
Chemicals which might
react and emit
dangerous fumes, or
present
fire or
explosion hazards will be segregated.
-
Eating,
drinking, chewing
tobacco and/or gum, and
application
of cosmetics will not be allowed in laboratories where toxic,
flammable,
carcinogenic, mutagenic, biological agents or radioactive chemicals are
used or stored.
-
Nothing shall be stored
on top of tall
cabinets because of
the
risk of
injury during earthquakes.
-
Sets of shelves shall be
anchored to the
walls when heavy
items
are stored or when the shelves rest on the tops of tables. Free
standing shelves shall not be used for storage of heavy items.
-
Liquid spills shall be
cleaned up
immediately, taking note
of
MSDS requirements
in Chapter 6 and bloodborne pathogen
hazards
in Chapter 7.
-
Access to emergency exits - areas in front
of
fire
extinguishers,
fire
alarm console, doors and exit passages must be kept clear at all times.
-
Flammables shall be
stored in approved
flammable storage
cabinets.
- When deemed necessary portable eyewash bottles shall be
provided.
E. Office Safety
1. Policy
All work performed in JAC offices and
administrative
areas
will be conducted using safe work practices. Office and administrative
areas will be maintained free of recognized hazards.
2. Responsibilities
- Supervisor
- The ultimate responsibility
for office safety
rests with the
supervisor.
All work hazards must be anticipated and appropriate safeguards
utilized.
- Ensures all employees are
properly trained
and instructed in
safe
office
practices and aware of all hazards associated with their work.
- Employee
- Follows the JAC's health
and safety policies
and instructions
of the
responsible
supervisor and Site Safety Advisor.
- Brings to the attention of
the supervisor
and/or Site Safety
Advisor
potential
hazardous situations.
- Site Safety Advisor
- Assists supervisors in
correcting hazardous
situations and
designating
safe working practices.
- Periodically inspects all
office facilities
to ensure
compliance with
existing
JAC policy.
3. Safe Work Practices
- Guard the sharp edges of furniture to
prevent
personal injury.
Keep
desk
"pull-out" writing surfaces closed when not in use.
- Practice
good
housekeeping. Keep
floors
free of
items that might cause tripping. Keep waste cans out of the way; do not
overfill them.
- Prevent slipping
accidents by cleaning up
spills
immediately.
- Report all defects such
as loose tiles,
broken steps,
railings
and doors
immediately to the Facility Maintenance Manager.
- Do not participate in
horseplay.
- Keep razor blades, tacks,
and other sharp
objects in closed
containers.
- Use the proper tool for
the job at hand
(e.g. a staple
remover to
remove
staples).
- Do not overload
electrical outlets. Do
not plug a multiple
outlet
strip--
an extension cord with multiple electrical receptacles--into a second
multiple
outlet strip.
- Report immediately, any
damaged
electrical cords, broken
switches, loose
connections, or bare wires to the Site Safety Advisor.
- Unplug any office machine
that smokes,
sparks, or delivers
an
electrical
shock. Have it inspected by the appropriate repair personnel.
- Avoid overloading the top
drawers of
filing cabinets to
avoid the
possible
tipping of the cabinet when the drawers are opened. Open one drawer of
the file cabinet at a time to prevent tipping. File cabinets shall be
placed where their use will not interfere with office traffic patterns.
Where possible, new filing cabinets shall be purchased with the
feature
that prevents more than one drawer being open at a time.
- Keep file and desk
drawers closed when
not in use to help
prevent
tripping
accidents.
- Be sure to use proper
lifting techniques.
Make arrangements
with
personnel
skilled in moving to shift furniture and other heavy objects.
- Do not lean too far back
in chairs. This
may result in
over-balancing and
a fall.
- Use only safety step
stools or ladders
for climbing. Don't
stand
on swivel
chairs or use them as step stools.
- Be careful with flammable
liquids. They
shall be kept in a
ventilated
area, away from excessive heat or ignition sources.
- Book cases or file
cabinets shall be
secured or anchored
where
reasonably
practicable.
- Power switches must be
off, or the cord
unplugged, when
electrical equipment,
such as a typewriter, is being cleaned or serviced.
- Office doors shall be
free of
obstructions at all times to
permit
egress
in case of an emergency.
- Jewelry, long hair, and
clothing must be
kept clear of
moving
parts.
- If it is necessary to run
a cable or
electrical cord across
the
floor,
a cable cover must be used to protect the wiring and prevent tripping.
- Report any observed pest
control problems
to the Facility
Maintenance Manager.
F. Safety and Health Program for Video
Display
Terminal Operators
1. Background
The proliferation of video display terminals
(VDT) in
the
modern
office setting has generated concern relative to potential health
hazards
associated with their use. There have been numerous operator complaints
of a wide range of symptoms including headaches, general malaise, eye
strain
and other visual/musculoskeletal problems. The National Institute for
Occupational
Safety and Health (NIOSH) has investigated these complaints and made
measurements
of both ionizing (x-ray) and non-ionizing (ultraviolet, visible, and
radio-frequency)
radiation emissions from video display terminals. Results of these
investigations
were published by NIOSH in a research report entitled, "Potential
Health
Hazards of Video Display Terminals". Major findings of the NIOSH
investigations
were:
- all radiation measurements
indicated
exposures to be below
current
occupational
exposure standards and in many cases, below detectable limits.
- eye strain experienced by
video display
operators was related
to screen
illumination and screen glare.
- workstation design features
such as viewing
distance, screen
height and
keyboard height contributed significantly to operator musculoskeletal
complaints.
Information from further
studies
can be found at the American Optometric Association website
http://www.aoa.org/x5380.xml, http://www.aoa.org/x5378.xml,
http://www.aoa.org/x5515.xml
2. Definitions
- Video Display Terminals (VDTs) include CRT
(Cathode Ray Tube) and LCD (Liquid Crystal Display) video screens used
on personal computers and computer workstations.
- Video display terminal
operators are JAC
employees whose
job
duties require
continuous use of VDTs for more than 3 hours per day or a total
of more than 20 hours in a given week. Employees whose duties require
only
occasional or intermittent use of VDT equipment are not considered
operators
for purposes of these safety and health programs.
3. Policy
VDT operators will be provided appropriately
designed
work
stations to minimize eye strain and to maximize operator comfort. A VDT
risk assessment will be carried out for every VDT operator.
4. Responsibilities
- Supervisor
- Carries out, or arranges to
have carried out,
a VDT risk
assessment.
- Maintains a current
awareness of JAC VDT
policies and
procedures and
certifies
whether or not an employee meets the JAC's definition of a VDT operator.
- Provides appropriately
designed work stations
for VDT operators.
- Employee
- Follows the JAC's VDT
policies and
instructions of the
supervisor and
Site
Safety Advisor.
- Brings to the attention of
the supervisor
and/or Site Safety
Advisor
any
potential problems associated with VDT operation.
- Site Safety Advisor
Assists ergonomics officer, supervisor and employees in
correcting problems
associated
with VDT work stations. Evaluates lighting levels, glare and work
station
design as necessary.
5. JAC VDT Program
- Workstation Design
JAC will provide office work stations which satisfy the
following
design
features.
- Work desk or work surface:
- The work desk or work
surface shall have a
sufficiently
large,
low-reflectance
surface and allow a flexible arrangement of the screen, keyboard,
documents
and related equipment.
- The document holder shall
be stable and
adjustable and shall
be
positioned
so as to minimize the need for uncomfortable head and eye movements.
- There shall be adequate
space for operators
or users to find
a
comfortable
position.
- Work chair:
- The work chair shall be
stable and allow
the operator or user
easy
freedom
of movement and a comfortable position.
- The seat shall be
adjustable in height.
- The seat back shall be
adjustable in both
height and tilt.
- A footrest shall be made
available to any
operator or user
who wishes
one.
-
Workstation Equipment
JAC shall provide workstation equipment to help minimize
fatigue
and
improve workstation safety, e.g. ergonomic keyboard/mouse, document
holder, and foot rest .
- Illumination/Glare Control
- Lighting levels in work
areas will be set at
the recommended
levels for
the specific equipment (e.g., office, lab). Measurements may be
requested
through the Site Safety Advisor.
- Individual work
stations will be
evaluated for glare upon
request. Screen
hoods and anti-glare filters will be installed as needed.
- Work-Rest Regimens
Video display operators will be allowed 15 minute break periods
after two hours of continuous VDT work.
- Eye Examinations
VDT users will be provided with eye tests and with a provision for
any required eye wear under the following rules.
-
When taking an eye
test, VDT users
shall take a copy of
the
VDT eye wear
form (Addendum 7) for the eye examiner to
complete.
This will indicate whether corrective eye wear is needed or not.
-
VDT
users
may claim (against a receipt) for any costs not covered by their
insurance. Prior approval to claim these allowances shall be sought
from the Human Resources Manager where the cost is likely to exceed
$200.
G. Contractor Safety Policy
1. Policy
Contractors shall conduct their activities in a manner
acceptable to
JAC and in accordance with the prescribed standards listed in the job
contract.
Contractors are non-JAC staff hired to perform work in JAC facilities.
Where the word "contractor" is used in this policy it shall also be
understood
to include subcontractors to the main contractor.
2. Responsibilities
- Engineering and Technical Services
The Chief Engineer appoints project supervisor. A
record is
kept by the
Site Safety
Advisor.
- Project Supervisor
- Ensures that the contractor
fulfills the
responsibilities
specified by
the contract.
- Schedules contract work and
informs staff of
project, time
schedule,
and
restricted work areas.
- Monitors contractor
personnel and reports
unsafe conditions to
contractor
superintendent.
- Advises contractor on
posting safety signs.
- Alerts/advises the
contractor of any hazards.
- Provides briefing on the JAC health and
safety policies.
- Contractor
- Responsible for the safety
of their personnel
and for JAC
personnel
working
with them.
- Eliminates hazardous
conditions.
- Monitors their personnel
for safe work
practices.
- Provides safety equipment
for their personnel.
- Informs and trains
personnel to promptly
report any unsafe
condition to
their superintendent.
- Follows Hawaii OSHA
regulations.
- Assures that any
subcontractor adheres to the
above.
- The contractor is
responsible for proper
disposal of chemical
and
hazardous
waste generated by the contractor in the performance of the job.
- Site Safety Advisor
Maintains a list of contractors and JAC supervisors.
3. Safe Work Practices
- The contractor must follow OSHA
construction
industry standards
(29CFR, Part
1926) or
relevant legislation.
- JAC advises contractor of
known potential
hazards in the
area of
work.
- The contractor must
report all injuries
and illnesses to
the project
supervisor
or the
JAC Site Safety Advisor.
- The contractor must
comply with good
housekeeping
requirements.
- The contractor must
comply with all signs
and tag
requirements.
- The contractor must
provide ground fault
circuit
interrupters on all
single-phase 15
and 20-ampere
receptacle outlets.
- The contractor must
provide first aid
supplies and a
qualified personnel to
administer first
aid at the job site.
- The contractor must
obtain permission
from the project
supervisor
before
using an open flame or electric arc.
- The contractor cannot
commence work on
any energized
equipment prior to lockout and tagout. The contractor must inform
the project supervisor and receive authorization prior to lockout and
tagout of any energy sources (electrical, mechanical, pneumatic,
hydraulic, etc.).
- The project supervisor
must be contacted
before lockout and
tagout procedures are commenced.
- Accumulations of
combustible waste
material, dust and
debris will
be removed
from the construction site at the end of each work shift, or more
frequently
if necessary for safe operation.
- The contractor must
provide traffic
control if required.
H. Manual Handling (aka
Lifting
and Carrying)
1. Policy
JAC policy is to design tasks in such a way as to avoid any
injury
from manual handling.
2. Responsibilities
- Supervisor
Ensures that any manual handling tasks are properly
designed
and
carried
out to avoid injury and that staff are properly trained.
- Employee
Takes care to assess any tasks before carrying them out
and
see that
there will be no undue risk of injury. Does not carry out any manual
handling
unless there is enough help present.
3. Procedures
- Assess the weight and size of the object
to see
if it can be
lifted by
hand. Check for sharp protrusions, and rotating parts. For heavy
objects,
establish the location of the centre of gravity.
- Check the route along which
the object will
be carried, and
decide from
which side to lift, and any intermediate resting points. If possible
use
a cart or trolley instead of carrying.
- Decide how many people
will be needed for
the lift and if
extra
people
will be needed to open doors.
- Get the help you need. If
this is a team
lift, establish
who is
the team
leader and make sure everyone knows the plan.
- If the object suddenly
slips be aware of
the danger of back
injury in trying
to recover it. It is often best to let it go - but think about this in
advance especially if a team lift is involved.
I. Rendering First
Aid
1. Policy
HIOSH 62-1 requires that in the absence of an infirmary,
clinic,
or
hospital in near proximity to the workplace which is used for the
treatment
of all injured employees, a person or persons shall be adequately
trained
to render first aid. Adequate first aid supplies shall be readily
available. In order to achieve this at the summit we require
staff
in the ETS and TSS groups to take first aid training.
2. Responsibilities
- Staff member
Attends first aid training as required and administers
first
aid when
appropriate.
-
Supervisor
Ensures that staff are allowed time to undertake
training.
-
Site Safety Advisor
Schedules first aid training by an outside agency.
3. Note on First Aid Outside JAC
We have taken advice on the requirements to
render
first
aid
outside the JAC, in order to clarify any possible implied commitments
for
trained staff. In a letter dated May 20th 1998 from Anna M Elanto-Sneed
of the law firm Carlsmith Ball Wichman Case & Igichi she stated
that
"Your employees have no legal obligation to render first aid to persons
outside of the workplace. However, if they should voluntarily decide to
render first aid to strangers outside of work, they must exercise
reasonable
care in doing so. Failure to provide first aid correctly could result
in
a lawsuit against the individual for negligence".
J. Laser Safety
1. Introduction
Our facilities contain many lasers and the dangers
associated
with
the light they generate must be taken very seriously. Injuries such as
permanent loss of vision can occur if someone is exposed to a laser
beam.
It is important to realize that because of the nature of our work, it
is
impossible to completely protect personnel from the dangers of
accidental
exposure to lasers. To minimize the risk of injury, personnel should be
aware of the dangers and follow the policy below.
2. Policy
It is the policy of the JAC to protect, as far as
possible,
personnel,
visitors and property from harmful exposure to laser radiation. The
laser
safety program described below is established in accordance with the
Occupational
Safety and Health Standards for General Industry, 29CRF1910.
3. Responsibilities
- Supervisor
- Informs Site Safety Advisor of
activities
using lasers in which
the
laser
power is more than 2 milliwatts.
- Ensures that staff using
lasers are familiar
with the JAC laser
safety
program.
- Checks classification of
lasers and labels
them accordingly.
- Employee
Uses laser equipment in accordance with the requirements in
this
section.
- Site Safety Advisor
Ensures that proper protective equipment is available and
properly
maintained.
4. Laser Hazard Classification
Class 1 - Exempt Lasers and
Laser
Systems
Class 1 lasers cannot, under normal operating
conditions,
produce
damaging
radiation levels. These lasers must be labeled, but are exempt from the
requirements of the JAC Laser Safety Program. A laser printer is an
example
of a Class 1 laser.
Class 2 - Low Power Visible
Lasers and
Laser Systems
Class 2 lasers are low power
lasers or
laser systems in the visible
range (400 - 700 nm wavelength) that may be viewed directly under
carefully
controlled exposure conditions. Because of the normal human aversion
responses,
these lasers do not normally present a hazard, but may present some
potential
for hazard if viewed directly for long periods of time. A continuous
wave
(cw) HeNe laser above Class 1, but not exceeding 1 mW radiant power is
an example of a Class 2 laser.
Note: JAC laser pointers are the Class 2 rating.
Class 3 - Medium Power Lasers and Laser Systems
Class 3 lasers are medium
power
lasers
or laser systems that require
control measures to prevent viewing of the direct beam. Control
measures
emphasize preventing exposure of the eye to the primary or specularly
reflected
beam.
Class 3a denotes lasers or laser systems
that
normally
would
not produce a hazard if viewed for only momentary periods with the
unaided
eye. They may present a hazard if viewed using collecting optics.
Visible
cw HeNe lasers above 1 mW, but not exceeding 5 mW radiant power, and
solid
state laser pointers are examples of this class.
Class 3b denotes lasers or laser systems
that can
produce
a hazard
if viewed directly. This includes intrabeam viewing or specular
reflections.
Except for the higher power Class 3b lasers, this class laser will not
produce diffuse reflections. Visible cw HeNe lasers above 5 mW, but not
exceeding 500 mW radiant power, are examples of this class.
Class 4 - High Power Lasers and Laser Systems
A high power laser or laser
system
that
can produce a hazard not only
from direct or specular reflections, but also from a diffuse
reflection.
In addition, such lasers may produce fire and skin hazards. Class 4
lasers
include all lasers in excess of Class 3 limitations.
5. Procedures
- Class 1 - Exempt Lasers
No control measures or warning labels are required for
class 1
lasers,
although any needless direct exposure of the eye should be avoided as a
matter of good safety practice.
- Class 2 - Low Power
Visible Lasers
-
Each class 2 laser must have affixed a label bearing
the
word
"caution"
and the laser sunburst.
-
No person should be allowed to stare directly at the
laser
beam.
-
The laser beam should not be pointed at any person
(especially
at their
eyes)
- Class
3a - Medium
Power Lasers
Note: Class 3a laser pointers are banned at the JAC. (Most
common laser pointers fall in this category)
-
Each class 3 laser must have a label affixed bearing
the
word
"danger"
and the laser sunburst.
-
No person should be allowed to stare directly at the
laser
beam.
-
The laser beam should not be pointed at any person.
(especially
at their
eyes)
- Class 3b - Medium Power
Lasers
-
Each class 3 laser must have a label affixed bearing
the
word
"danger"
and the laser sunburst.
-
A sign shall be conspicuously posted in the lab or
area
which
serves to
warn onlookers of the hazard. The sign shall bear the words "caution"
and the laser sunburst.
-
The laser should be operated only by a qualified
person.
-
Priority shall be given to incorporating safety
mechanisms,
such as beam
stops, shutters, interlocks, etc.; directly into the laser system
rather
than to rely on procedural controls. The laser beam should be contained
within an enclosure whenever practicable.
-
Eye protection devices, which are specifically
designed
for
protection
against radiation from the laser system in use, shall be used when
engineering
and procedural controls are inadequate to eliminate potential exposure.
-
Optical systems, such as lenses, telescopes, and
microscopes,
may increase
the hazard to the eye when viewing a laser beam. Therefore, special
care
should be taken in their use.
-
The laser beam should not be pointed at any person.
(especially
at their
eyes)
-
Attempt to keep the laser beam path above or below,
either
sitting
or standing, the person's eye level.
-
No person should be allowed to stare directly at the
laser
beam.
-
Remove any specular surfaces such as mirrors,
polished
metal,
watches,
rings and other jewelry from the laser beam path, which may reflect the
main beam.
- Class 4 - High Power Lasers
JAC does not use any class 4 lasers. In cases where the
JAC
requires
the use of any class 4 lasers, the designated supervisor must complete
a risk assessment taking into consideration the procedures below:
Class 4 lasers exhibit the highest potential for
injury and
damage.
Specular and non-specular diffuse reflection are more likely to contain
sufficient energy to be hazardous. Skin, as well as eye damage, are
quite
possible. Material hazards such as fire, vaporization of materials, and
damage to objects entering the laser beam, are the greatest. For the
above
reasons, controls for the use of class 4 lasers must rely on more
positive
methods (engineering them out rather than relying on safety
procedures)
-
Each class 4 laser must have affixed a label
bearing
the
word
"danger"
and the laser sunburst.
-
Each class 4 laser should be isolated in a lab or
designated
area. Access to
such
an area shall require appropriate authorization.
-
A sign shall be conspicuously posted outside the
lab
and in
the area inside
the lab which serves to warn onlookers of the hazard. The sign shall
bear
the word "danger" and the laser sunburst.
-
Whenever possible, the entire beam path including
the
target
area should
be enclosed. Enclosures shall be equipped with interlocks so that the
laser system will not operate unless the enclosure is properly
installed.
-
Eye protection devices which are designed for
protection
against radiation
from the laser system shall be used when engineering and procedural
controls
are unable to eliminate potential exposure.
-
Ancillary Hazards
Regardless of laser classification (which covers laser
light
output
hazards only) some laser associated equipment present unique hazards,
e.g. electrical hazards.
Quite
often these hazards are much more dangerous than the laser light
itself.
Many deaths resulting from the use of lasers were not from the beam but
were due to electrical hazards that were overlooked.
K. Ladder Safety
1. Policy
Staff who use ladders must be trained in their
use,
proper
selection, inspection and storage. Improper use of ladders has
caused
a large percentage of accidents in the workplace.
2. Responsibilities
- Supervisor
Ensures that their staff are properly trained before
using
ladders.
-
Employee
- Inspects ladders
before each use.
- Uses proper ladder
procedures.
- Reports any defects or
broken ladders to the
supervisor
immediately.
Does
not use a damaged ladder.
-
Site Safety Advisor
- Inspects ladders monthly and
documents
results.
- Maintains records of employee
training.
- Coordinates and conducts
training session.
3. Ladder Hazards
Falls from ladders can result in broken bones and
death.
Ladder safety is a life saving program at the JAC.
Hazards include:
- use of a ladder with missing
or broken parts
- use of a ladder with too low
a weight rating
- use of a ladder that is too
short for the job
- use of a ladder as a working
platform
- use of a metal ladder near
electrical wires
- objects falling from ladders
4. Procedures
- Ladder Inspection
Inspect ladder for the following before each use:
- All rungs and steps are
free of oil, grease
and dirt,
- All fittings are tight,
- Spreaders or other locking
devices are in
place,
- Non-skid safety feet are in
place,
- No structural
defects, all support
braces are intact.
- Ladder Load Rating
Use ladder that is rated for the intended use.
- Ladder Selection
Select ladder to suit intended use.
- Ladder Set-up
These procedures must be followed to prevent ladder
accidents:
- place ladder on a clean
slip free level
surface,
- extend the ladder to have
about 3-4 feet
above the top support
or work
area/landing,
- never allow more than one
person on a ladder,
- use carriers and tool belts
to carry objects
up a ladder,
- do not allow others to work
under a ladder
that is in use,
- when using an extension
ladder, place the
ladder base 1/4 the
height of
the ladder from the wall.
- Ladder Maintenance and
Storage
- keep ladders clean,
- do not repair broken parts on
ladder unless
the part is
provided by the
original manufacturer,
- store ladders on sturdy hooks
or in an area
where they cannot
be
damaged.
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