How Dangerous Is A Nail Gun

Nail Gun Injuries and Other Hazards

At that place are several major take a chance factors that tin lead to a boom gun injury including:

• unintended nail discharge,
• nails richochet,
• failure to contact the piece of work surface,
• penetration through the work surface,
• nailing in awkward positions

Understanding these hazards will assistance you lot to prevent injuries on the jobsite. This module will take a closer look at these of import run a risk factors and hazards.

Double Burn

Unintended nail discharges from double fires usually occurs when using contact firiing triggers.

The Consumer Product Safety Commission (CPSC) constitute contact trigger nailers are susceptible to double firing. This occurs a lot when workers are trying to accurately place the nailer against the work piece. Researchers found a 2d unintended firing can happen faster than the user is able to react and release the trigger.

Double fire can also be a particular problem for new workers who may push harder on the tool to compensate for recoil. It can besides happen when the user is in an awkward position, such as tight work spaces, where the gun doesn't have the necessary space to recoil. The recoil of the gun can likewise cause a non-nail injury in tight spaces if the nail gun hits the user's caput or face up.

one. Unintended nail discharges from double fires usually occur when using ________.

a. contact firing triggers
b. full sequential triggers
c. single actuation triggers
d. single sequential triggers

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Updated 5/28/2021

Knocking and Bumping

Smash guns with contact and single actuation triggers will burn if the trigger is being squeezed and the safety contact tip gets knocked or pushed into an object or person by mistake. For example, a framer might knock his leg going down a ladder or crash-land into a co-worker passing through a doorway. Contact trigger nailers can release multiple nails and single actuation trigger nailers can release a single nail to crusade injury.

Holding or carrying contact firing trigger or single actuation trigger smash guns with the trigger squeezed increases the chance of unintended nail discharge. Construction workers tend to proceed a finger on the trigger because it is more natural to hold and carry an 8-pound boom gun using a full, four-finger grip. Tool manufacturers, however, do warn against it.

Real World Accident

A contractor was on a roof with a framing nailer. He had his finger on the trigger with the autofire engaged. However, when he sat up from a crouched position, he accidentally pushed the tip of the gun against his knee, causing the gun to fire. The nail grazed his os within his leg and he was unable to straighten his leg. Paramedics had to acquit him off the roof and down the stairs. He didn't take to undergo surgery, every bit doctors were able to remove the nail.

Click to enlarge.

Click to enlarge.

Click to enlarge.

2. What practice increases the risk of injury when holding or carrying contact firing trigger or unmarried actuation trigger blast guns?

a. Blocking the trigger while carrying
b. Cycling the trigger to prepare the gun for utilise
c. Holding the nail gun with the dominant hand
d. Keeping the trigger squeezed

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Updated 5/28/2021

Nail Penetration

Nail penetration through hand-held lumber can happen with all trigger types.

This can happen with ALL trigger types. Nails can pass through a work slice and either hit the worker's hand or fly off equally a projectile smash. A blow-out nail is only 1 example. Blow-outs tin occur when a boom is placed near a knot in the wood. Knots involve a change in wood grain, which creates both weak spots and hard spots that can make the smash change management and exit the work piece.

Nail penetration is specially a concern for placement work where a slice of lumber needs to be held in place by mitt. If the smash misses or breaks through the lumber it can injure the non-ascendant hand holding information technology, or equally you lot can come across in the prototype to the correct, some other office of the body.

Real World Blow

Two framers were working together to lay down and smash a subfloor. Ane framer was waiting and belongings the nail gun with his finger on the contact trigger. The other framer was walking backwards toward him and dragging a sheet of plywood. The framer handling the plywood backed into the tip of the nail gun and was shot in the back. The blast nicked his kidney, but fortunately he recovered. Equally a result of this incident, the contractor switched to using merely sequential triggers on framing smash guns. Co-workers can get injured if they bump into your contact trigger boom gun. You can prevent this by using a full sequential trigger.

3. What is a special business organization when nailing a piece of lumber that is held in identify past the hand?

a. Boom penetration
b. Nail rebound
c. Damage to the blast gun
d. Blow-outs

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Updated 5/28/2021

Blast Ricochet

Positive placement nailer attaching metal brackets.

When a boom hits a hard surface, information technology has to change direction and it can bounce off the surface, becoming a projectile. Wood knots and metal framing hardware are common causes of ricochets. Problems have too been noted with ricochets when nailing into dense, laminated beams. Ricochet nails tin can strike the worker or a co-worker to cause an injury. This can happen with ALL trigger types.

Missing Piece of work Piece

Injuries may occur when the tip of the nail gun does not make full contact with the work piece and the discharged smash becomes airborne. This tin occur when nailing near the border of a work slice, such as a plate. Positioning the safe contact is more difficult in these situations and sometimes the fired blast completely misses the lumber. Injuries have likewise occurred when a smash shot through plywood or oriented strand board sheeting missed a stud and became airborne. This can happen with ALL trigger types.

4. Nailing into metal and wood knots unremarkably cause _____.

a. boom gun jamming
b. nails disintegrating
c. nails ricocheting
d. nails being damaged

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Updated v/28/2021

Bad-mannered Positions

Toe-nailing can exist especially bad-mannered and hazardous.

Nailing in awkward positions where the tool and its recoil are more than difficult to command may increase the risk of injury. These include:

• toe-nailing;
• nailing above shoulder superlative;
• nailing in tight quarters;
• belongings the blast gun with the non-ascendant hand;
• nailing while on a ladder; or
• nailing when the user's torso is in the line of burn down (nailing towards yourself).

"Toe-nailing" is driving a boom in at a slant to secure flooring joists to the plate. It's more likely to cause an injury considering the user cannot concur the gun flush against the workpiece.

Nailing from a ladder too makes information technology hard to position the nail gun accurately. Nailing beyond a comfortable accomplish distance from a ladder, elevated work platform, or leading border places the user at risk for a autumn.

While injuries can happen with all trigger types when working in awkward positions, adventitious discharges using single-action triggers are a special business concern.

5. Why is "toe-nailing" more likely to cause an injury?

a. The pes is used to brace the wood while nailing
b. The user cannot hold the gun flush confronting the workpiece
c. The toes naturally go far the way of nailing
d. The gun is located flush with the toes when nailing

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Updated 5/28/2021

Bypassing Safety Mechanisms

This unsafe practise tin can occur with all trigger types. Bypassing or disabling features of either the trigger or safe contact tip is an work do that increases the adventure of injury. A worker may believe information technology'south more efficient to bypass safety mechanisms, simply all it takes is ane error to eliminate any do good.

For example, removing the spring from the safety contact tip makes an unintended discharge even more likely. Modifying tools can lead to safe problems for anyone who uses the blast gun.

Nail gun manufacturers strongly recommend against bypassing safety features, and voluntary standards prohibit modifications or tampering. OSHA'south Construction Standard at 29 CFR 1926.300(a) requires all hand and power tools and like equipment, whether furnished past the employer or the employee shall exist maintained in a safe condition. Nail guns that take modified safe mechanisms must be repaired or taken out of service.

half dozen. Bypassing nail gun safety mechanisms can occur _____.

a. only with full sequence trigger types
b. primarily with contact trigger types
c. with all trigger types
d. with single actuation trigger types

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Updated 5/28/2021

Other Hazards

Air Force per unit area

This quick disconnect is a positive means of securing the gun to the hose.

Pneumatic tools and compressor apply are regulated under OSHA'south Structure Standard at 29 CFR 1926.302(b). The provisions in this standard that are relevant for blast guns are provided beneath.

1. Pneumatic power tools must be secured to the hose or whip past some positive means to forbid the tool from becoming accidentally disconnected.
2. All pneumatically driven nailers, staplers, and other similar equipment provided with automatic fastener feed, which operate at more than 100 p.s.i. pressure at the tool, must have a safety device on the muzzle to prevent the tool from ejecting fasteners, unless the muzzle is in contact with the work surface.
3. The manufacturer's condom operating pressure for hoses, pipes, valves, filters, and other fittings must non be exceeded.
4. The utilise of hoses for hoisting or lowering tools must non be permitted.

7. What is acceptable equally a positive means to forbid a pneumatic nail gun air hose from becoming accidentally disconnected?

a. Wrapped electrical tape
b. A quick disconnect
c. An adjustable clamp
d. A screw-on hose connector

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Updated five/28/2021

Noise

Pneumatic nail guns produce brusk (less than a 10th of a second in elapsing) but loud "impulse" racket peaks: one from driving the nail and one from exhausting the air. Most blast gun manufacturers recommend users wear hearing protection when using a nailer.

Nail gun racket can vary depending on the gun, the work piece, air pressure, and the work setting. The type of trigger arrangement does not appear to affect the noise level. The sound level from pneumatic blast guns average 94.v dBA and height dissonance emission levels for several nailers tin can range from 109 to 136 dBA. These loud short bursts can contribute to hearing loss.

Employers should provide hearing protection in the grade of earplugs or muffs and make sure they are worn correctly. Employers should also enquire most dissonance levels when ownership nail guns.

Methods to reduce smash gun noise include:

• improving the existing boom gun muffler; and
• incorporating a return or exhaust line

8. Peak noise emission levels for several nailers range from __________.

a. 25 to 50 dBA
b. 53 to 98 dBA
c. 77 to 142 dBA
d. 109 to 136 dBA

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Updated v/28/2021

Musculoskeletal Disorders

Framing smash guns can weigh upwardly to 8 pounds and many framing jobs require workers to agree and use nail guns for long periods of time while working in awkward postures. Using boom guns for tasks that crave awkward postures is likely the cause for most ergonomic injuries.

Holding an 8-pound weight for long periods of fourth dimension tin lead to musculoskeletal symptoms such as soreness or tenderness in the fingers, wrist, or forearm tendons or muscles. These symptoms can progress to pain, or in the most severe cases, disability to work.

If utilise of a boom gun is causing musculoskeletal pain or symptoms of musculoskeletal disorders, medical care should be sought. The probability and severity of ergonomic injuries while using nail guns may exist eliminated or reduced by:

• revising the procedure's requirements (duration, frequency, force, etc.)
• replacing the worker or helping the worker to be better able to practise the job; and
• redesigning or replacing the nail guns needed to do the task

ix. What is the well-nigh likely cause of ergonomics injuries while using nail guns?

a. Awkward postures
b. Poor design of nail guns
c. Using heavier pneumatic nail guns
d. Physical weakness of the worker

Bank check your Work

Read the material in each section to detect the right answer to each quiz question. Afterward answering all the questions, click on the "Check Quiz Answers" button to grade your quiz and run into your score. Y'all will receive a message if you forgot to answer one of the questions. Later clicking the button, the questions yous missed volition be listed below. You tin can correct any missed questions and bank check your answers over again.

Updated 5/28/2021

Source: https://www.oshatrain.org/courses/mods/611m3.html

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