Safety Flashcards
Any light, scaffolding, or equipment malfunctions that are possible hazards should be?
Reported to the appropriate person.
Abrasive blasting at high pressures is a dangerous operation. ___ ___ is a top priority on any job where this is done.
Operator Safety.
It is essential that all site personnel are?
Well protected.
Never get in ___ ____ of an abrasive blast.
The path.
Abrasive particles can travel up to 1___ mph and with the safe effect as a 2?
- 450 mph
2. Shotgun blast.
While abrasive blasting is in progress:
- Allow only the ____ within the vicinity of the blasting.
- Display prominent ___ ___.
- Ensure a ___ ___ (___ ___) is on alert.
- ___ all ___ to ensure it operates properly and safely.
- Allow only the blaster within the vicinity of the blasting.
- Display prominent warning signs.
- Ensure a lookout (Pot man) is on alert.
- Test all equipment to ensure it operates properly and safely.
While abrasive blasting is in progress:
- Allow only the ____ within the vicinity of the blasting.
- Display prominent ___ ___.
- Ensure a ___ ___ (___ ___) is on alert.
- ___ all ___ to ensure it operates properly and safely.
- Allow only the blaster within the vicinity of the blasting.
- Display prominent warning signs.
- Ensure a lookout (Pot man) is on alert.
- Test all equipment to ensure it operates properly and safely.
The CI should be familiar with and, when appropriate, know how to use the following protective equipment:
- ___.
- ___.
- Heavy protective ___ and ___.
- ___ and ___ protection.
- Hood.
- Respirator.
- Heavy protective gloves and clothing.
- Eye and Hearing protection.
Since blast operators are required to ___ the equipment, CI’s need to know how to do that in order to verify that it has been properly done.
Ground
Site safety must conform to applicable worker protection ___ and ___.
Rules and Regulations.
Other than PPE an abrasive blasting operator wears the ____ ___. It is perhaps the most important safety feature.
Deadman’s Switch.
Essential safety components for blasters are their PPE. Typically these include:
- ___ ___ ___.
- ____.
- Strong ___ ___.
- Air fed ___ ___, incorporating a replaceable ___ and ___ ___.
- ___ ___
- Steel Toe Boots.
- Respirator.
- Strong leather gloves.
- Air fed blasting helmet, incorporating a replaceable visor and leather cap.
- Hearing Protection.
When coating application is being performed, all personnel on site must be aware of the tremendous damage that can result from a small quantity of a vaporized volatile substance that is both a health and explosion hazard.
Personnel need to be aware of the health hazards in solvent fumes, toxic fumes, finely atomized metals, vapor mists, and dust dispersed in the air. These are all health and explosion hazards.
Workers have been killed by explosions when painting in confined spaces. One accident occurred when the workers, because of a toxic hazard, were properly breathing fresh air through masks.
They were killed suddenly by an explosion. The concentration of toxic vapor in the air was within the explosive range and, when an extension light bulb broke, the vapor ignited and killed several men.
Workers have been killed by explosions when painting in confined spaces. One accident occurred when the workers, because of a toxic hazard, were properly breathing fresh air through masks.
They were killed suddenly by an explosion. The concentration of toxic vapor in the air was within the explosive range and, when an extension light bulb broke, the vapor ignited and killed several men.
___ ___ indicates the fire or explosion hazard of a flammable substance.
Flash point.
Coatings and solvents are sometimes categorized by their flash point temp. Low flash point solvents are those with a flash point below typical storage temperatures ___ and are the most hazardous to store and/or use. When concentrations of these volatile vapors are sufficient, even hot surfaces can ignite them.
- 73F
___ ____ is essential to keep the solvent content of the air below the lower explosive limit.
Adequate ventilation.
___ ___ discharges may also ignite solvent vapors. To reduce this hazard, ground the spray equipment and ensure connections are electrically continuous.
Static Electricity
___ ___ also creates a certain amount of overspray, hazardous vapors, and toxic fumes. This is true even under ideal conditions and there is no way to avoid it entirely. Mitigate hazards to personnel by ensuring they use respirators appropriate for the specific vapors and fumes.
Spray Finishing.
Even if the concentration of flammable gas or vapors in the air is blow the LEL, it may still be far above the safe limit for?
Breathing.
In general, aromatic solvents, such as Xylene and Toluene, are hazardous than aliphatic solvents such as mineral spirits. Unfortunately, mineral spirits are rarely used in high-performance coatings but relatively hazardous solvents are still widely used.
Aromatic solvents are used almost exclusively in some synthetic paints, such as lacquer and vinyls, and to a greater or lesser degree in oleoresinous paints such as phenolic varnish and some alkyds.
In general, aromatic solvents, such as Xylene and Toluene, are hazardous than aliphatic solvents such as mineral spirits. Unfortunately, mineral spirits are rarely used in high-performance coatings but relatively hazardous solvents are still widely used.
Aromatic solvents are used almost exclusively in some synthetic paints, such as lacquer and vinyls, and to a greater or lesser degree in oleoresinous paints such as phenolic varnish and some alkyds.
Allowable concentrations for the 1___ solvents are greater than for the 2___ solvents, but in every case the MAC for breathing is far less that the LEL.
- Aromatic solvents.
2. Aliphatic solvents.