LSO11: Conducting the Laser Safety Evaluation Flashcards
Laser Safety Evaluation: Role of LSO
Be responsible for hazard evaluation of Laser work
Assured that prescribed controls are in place
Review class 3b and 4 installations, facilities and laser use: suitable for use and perform in that area
Periodically audit to ensure that particular control in place continue be effective
What does laser safety evaluation process involves?
Identifying the hazards, assessing the risks, recommendation for bringing the hazards down to appropriate level
When is Laser safety evaluation performed?
when new laser is acquired,
periodic evaluation to ensure that hazards are adequately controlled
What is laser risk?
A severity of the event and the probability of the event
What are types of risk?
Voluntary risk
Involuntary risk- no control such as breathing air with some sort of contaminant
Implement control to reduce risk
When should a laser or laser system be evaluated?
Periodically at a frequency determined by LSO, before the laser is first used, whenever the laser is modified or its use significantly change
Answer: all of the above
What is class 1 and 1M laser risk?
No harm possible under intended conditions of use
1M: no harm , unless magnifying optics are used to view the beam
What are class 2 and 2M laser risk?
No harm unless deliberate staring to the beam
2M: no harm as long as deliberate view occurs under magnifying optics
What are class 3R laser risk?
harm can be caused with the extended viewing. The time required for 3R for aversion response
What are class 3B laser risk?
Immediate harm through direct exposure, diffuse reflection normally safe
What are Class 4 laser risk?
immediate harm through direct and diffuse reflection as well as damage to the skin
What does laser hazard classification don’t provide?
Laser classification provides no information on the distance from the laser where the hazards exit.
No information about the non-bean hazard
what does laser classification tell you?
Laser classification warns the user of laser potential for causing injury, but doesn’t quantify the severity of the harm
What is laser risk assessment and control process?
ID and characterized hazards,eliminate when practical, when total risk is not possible, perform assessment to minimize risk
What are types of the risk?
Probabilistic risk assessment
Deterministic risk assessment : considerable factors for radiation exposure.
What are the risk factors to consider?
The equipment, process, the location, and the people
What is the risk factors to consider for the equipment?
specification of the laser,NOHD, how is the laser operated, any other hazards from the laser
What is the risk with the process considerations?
what is the function?, How is the work being carried out and controlled? Does the process present any additional hazards?
What is laser safety fact finding?
Reviewing employee training records, observation of facility, performance.
You shouldn’t be drawing any conclusions during this phase, document your finding
List what a review of the findings is?
Potential uncontrolled risks, non-adherence to policy, regulatory non-compliance, observed best practices
make a concise report: include just facts, enough details, give kudos when deserved
During the fact finding step of the evaluation, you should not be:
Verbally providing recommendations
What is event tree analysis?
forward up logical analysis model. Used to analysis the functioning or failed system. analysis the successes or failure
What is FMEA/FMECA?
Is a hazard identification and frequency analysis techniques. involves evaluation of all possible fault modes within equipment or a process and determines the effect of each failure
What is fault tree analysis?
Identifies all possible undesired outcomes ( boolean logic), and determines all of the different ways in which they could occur
What is Hazop analysis?
examines each part of an entire system to determine how deviations from the intended function or performance can lead to undesirable outcomes
What is preliminary analysis?
try to identify hazard and determine the frequency that is used to assess potential hazards at an early design state
What are checklists?
A visual means of itemizing potential hazards or undesirable outcomes that need to be considered. Most frequently used.
What are databases and Mobile Inspectors?
allow for the electronic organization of large sets of data,
commercially available databases ( EHS Assistant, EasyHaz)
computer-or tablet based inspection systems
