Describe a few engineering controls for lasers - ANS-Protective housings - enclosures that
restriction get admission to to the beam at or underneath the MPE. Can be an entire room
Enclosures - encloses the beam
Interlocks - Keeps the device from running if it's far open. Service panels that furnish direct get
admission to to a 3B or 4 laser have to be interlocked. Set to fail safe.
Warning gadget- activated whilst laser is activated.
Beam Stop/Attenuator - Reduces beam beneath MPE in the course of times in which full energy
isn't always needed.
Laser Barrier/Protective Curtains - Barrier Threshold Limits starting from 10-350 W/cm2. Must
no longer support combustion or flame consumption throughout or following a laser publicity.
Warning Labels
Describe the navy specific laser approval technique - ANS-Which lasers have to be authorized -
lasers which might be used for operational or combat purposes. Commercially advanced lasers
should go through the SG.
The approval process is initiated by using the SPO that desires the laser. For commercially
dev'd lasers, MAJCOM initiates approval through AFRL.
The laser will then be evaluated as quickly as very last production configuration has been
executed.
A Preliminary Hazard Analysis is completed the use of manufacturer provided specs to
symbolize hazards.
After the whole lot has been quantified, AFRL performs calcs that outline the hazards.
If the tool is disapproved, it will need redesigned. This will commonly most effective happen if
the chance is not well worth the reward
Dye Lasers - ANS-The medium is a dye. Emits UV to near IR-Spectrum variety of beams. These
are tunable lasers.
How will we calculate the MPE? - ANS-There are values inside the ANSI widespread, but
similarly to that, we also need the anticipated exposure price. They are exceptional depending
at the laser.
UV is all day
Visible is 0.25 sec(aversion reaction)
IR is 10 sec
Single Pulse is the heart beat width
, Irradiance - ANS-Radiant energy placing a floor divided with the aid of the vicinity it is striking
W/cm2
Radiant Energy - ANS-Energy this is emitted, transferred or received. Measured in Joules
Radiant Exposure - ANS-Exposure over a selected region divided by way of the location it's
miles hanging W/cm2
Radiant Power - ANS-Power emitted, transferred, or acquired in the shape of radiation.
Measured in Watts
Semiconductor diode laser - ANS-Used in lots of packages to encompass spectroscopy,
conversation, scanners, and many others. Most commonplace is a gallium-arsenide junction
which emits a fan fashioned beam at 840 nm.
This is the level of laser radiation to which a person can be uncovered without risky
consequences or adverse modifications in the attention/skin. - ANS-MPE Maximum Permissible
Exposure
Depends on Wavelength, Exposure Duration, Output, and publicity situations.
J/cm2 - Pulse
W/cm2 - Continuous
This is the distance where a laser can attain both immediately, by using mirrored image, or via
scatter where it nevertheless exceeds the MPE throughout nominal operation. - ANS-The
Nominal Hazard Zone.
What AFI covers the Laser Radiation protection program - ANS-AFI 48-139, we additionally use
ANSI 136.1
What are commonplace non-beam laser hazards? - ANS-IH - Compressed gases/ toxic
materials and noise.
Explosion Hazards -
Non-beam Optical Hazards - UV radiation
Enclosure flammability
Collateral Radiation
Electrical Hazards
What are a few traits for common gas lasers? - ANS-HeNe - 633nm wavelength. Used in many
consumer merchandise
Ar,Kr,Xe - 322-799nm wavelengths. Ar has the very best seen power stages. Stable excessive
output as much as 20W.
CO2 - Most green (10%-30% efficient) and effective CW lasers. >30W at Far-IR.
What are some characteristics for solid state lasers - ANS-Generally an lively medium of crystal
doped with an impure ion. Can have very high outputs (2000W)
What are a few examples of administrative controls for lasers? - ANS-Controlled regions, both
brief or permanent
Standard Operating Procedures, a few focus on alignment approaches as this is wherein most
of the people of accidents arise.
Education/training inclusive of education for operators, LSOs, and provider personnel.
What are some requirements for laser education? - ANS-Laser description - dangers,
specifications, manipulate measures
SOPs/policies assessment
Operating records, LSSRB safety information
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