Worksheet 58-ESD PPE & MSDS Flashcards
PPE shoes protect the technician from impacts. What else should the shoes protect the technician from?
Protective footwear for avionics technicians should also protect against electrical shocks by having a sole with high resistance.
What should be the priority as it comes to PPE before working on electrical equipment?
The first priority for any technician is to remove electrical power from any system they are intending to work on.
What are the two primary protections that hard hats provide?
Hard hats should protect from falling objects but also from electrical shocks. This means that metal hard hats should never be worn around electrical equipment.
Define ESD
Electro Static Discharge
Uncontrolled static discharges through electrical components that could damage sensitive components
How does ESD concern avionics technicians?
ESD is a concern to technicians because they are in a position to be removing, replacing and performing maintenance on equipment that is susceptible to damage if not handling properly.
How many volts does an ESD discharge need to be to damage electronic equipment?
There only needs to be a discharge of around 100V to damage microprocessors
What is upset damage caused by an ESD?
Upset damage may be so small that the only ill effects to a computer could be processing and simple functions. Sometimes reloading software may need to be done to repair the damage.
What is latent damage caused by an ESD and would there be an indication of damage?
Latent damage may go unnoticed, and the unit might pass a BITE test but damage may be severe enough to damage a function of the box not tested in the BITE.
What is the definition of catastrophic failure caused by ESD?
Catastrophic failures are seen by the technician immediately, and the unit will not pass a BITE test.
What kind of personal grounding is necessary to protect from ESD?
A technician needs to be electrically grounded both on their person through wrist straps at the workstation but also needs to be foot grounded to reduce the static charges that can build up when walking from station to station.
What is a dissipative work surface?
A dissipative workstation is a conductive work surface that is grounded so that when a component under test is placed on it, the static charges will conduct away from the unit under test through the chassis.
What is the purpose of an MSDS document?
Material Safety Data Sheet
A document that describes all of the hazardous and personal safety information required for the safe use and handling of HAZMATs.
What makes a compound a HAZMAT that requires special handling?
A HAZMAT is any material that meeds government standards for toxicity levels. If they exceed a threshold limit for hygiene and if the compound is found to have cancer causing, corrosive, irritant or causes damage to specific organs.
Where should a copy of an MSDS document be kept?
A copy of the MSDS document should be kept with safety and emergency response personnel at the facility and a copy should be in the area where the individual technician works with the compound.
What part of the MSDS document should a technician know before ever working with HAZMAT?
Before actually handling any HAZMAT, a technician needs to know:
- PPE required for handling the material
- Procedures for accidental exposure
- Storage and disposition of the material
