OSH 387 Final

All personnel, when engaged in work ____________ feet above the rig floor or other working surfaces, shall be protected at all times from falling by _______________, _______________________, or ______________________ Unless unfeasible or creates a greater hazard.

*10 *Guardrails *safety nets *Personal fall arrest systems

Step bolts are uniformly spaced at a vertical distance of not less than __________ and not more than ______________ apart

*12 inches *18 Inches

Single ladders may not exceed ____ in length, while extension ladders may not be more than ____ feet long.

*20 *60

What do we mean by 3 points of contact?

*Always keep 3 points of contact while working a ladder. *2 hands 1 foot / 2 feet 1 hand

*When providing fire control devices for a storage room for flammable liquids, where should the fire extinguisher be located? *Why?

*At least 1 fire extinguisher should be 10-25 feet outside of the storage room. *Fires of flammable liquids escalate rapidly. If extinguisher is too close to storage area, it may be impossible to get to fire extinguisher once fire has started.

The flashpoint of a flammable liquid is ________, while the flashpoint for a combustible liquid is ___________.

*Below 100 degrees F *Between 100 & 200 degrees F

What materials would be incompatible with an alkali?

*CO2 *Water *Chlorine

Powered Industrial Trucks may be gasoline-powered or driven by three other power sources. What are those 3 power sources?

*Diesel *Electric *LPG (liquified petroleum gas)

When do most robotics accidents occur? Why?

*During programming, maintenance, repairs, and testing *occurs because workers are temporarily within the robots working space.

What materials would be incompatible with a combustible metal?

*Flammable liquids *Water *Chlorinated hydrocarbons

What is the action that should be taken when a ladder is found to be defective?

*Immediately tag "Dangerous: Do Not Use" *Remove the ladder from service until repaired or replaced

List two requirements for battery changing and charging areas.

*Must be a designated area *No smoking

What are three conditions that may lead to serious Gantry Cranes injuries?

*No fixed ladder to reach cab *Gap > 12" between fixed ladder and access *Fixed ladder or walkway is poorly maintained

Why can't you transfer flammable liquids by means of air pressure on a container/tank?

*Over-pressure could damage container *Flammable atmosphere could be created within the container.

In-running nips occur when parts are rotating in opposite directions on parallel axes. What other two situations produce nip points?

*Point of contact between power transmission belt & pulley *Point of contact between chain & sprocket

List some items that you would look for when inspecting hand and stair rails.

*Proper design *Tread height *Illumination *Housekeeping

List 2 examples of presence-sensing devices to guard a machine.

*Radio frequency device *Electromechanical device

List some safety features that are required in an approved safety can:

*Spring closing lid / spout cover *Safely relieves internal pressure *Prevents fire flashback into can contents *Double wire mesh construction

List the manners that flammable or combustible liquids liquids can be drawn from or transferred into vessels, containers, or portable tanks within a building.

*Through a closed piping system *Safety cans *By means of a device drawing through the top *By gravity through an approved self closing valve

What are the three parts of a guard rail? What is the required height of each part?

*Top rail: 42" *Midrail: 21" *Toeboard: 4"

Classify portable ladders based on their height and use:

*Type 1- Industrial step ladder/3-20 ft. for heavy duty use. *Type 2- commercial step ladder/3-12 ft. medium duty use. *Type 3- Household step ladder/3-6 ft. for light duty use.

Methods of machine guarding depend on many factors. Three of these are:

*Type of operation *Size/ shape of stock *Method of handling

What is meant by "plugging". Is this an acceptable practice for crane operation?Why?

*Using reverse as a brake *this is not an acceptable practice

A fork lift is considered "unattended" if the operator is more than 25 feet away. What precautions must be taken if a fork lift is unattended?

*forks lowered *power off *in neutral *brake on

List potential sources of ignition in an industrial setting:

*open flame/sparks *lighting *Smoking *Cutting/welding *Hot surfaces (friction) *Chemical reactions

List 4 of the minimum requirements for machine safeguards:

*prevents contact with dangerous moving parts *Firmly secured to machine (durable) *Doesn't interfere with regular tasks *Doesn't create a new hazard

The capacity of glass or approved plastic containers for the storage and transfer of category 1 flammable or combustible liquids shall not exceed....

1 pt.

In flammable and combustible liquid (unstable liquid) storage tanks, the distance between 2 tanks shall not be less than....

1/2 the sum of the tanks diameter

The horizontal distance from the supporting structure to the foot of a ladder shall be ____ the working length of the ladder.

1/4

The protecting member of a guard for a grinding wheel shall be adjustable for variations in wheel size. The distance between the wheel periphery and the guard shall never exceed:

1/4"

Containers next to flammable or combustible storage shall have a minimum of ______________ of separation.

1/6 sum of their diameters

Adjustable work rests used to support work on grinding machines must be kept adjusted to maximum opening of ____ to prevent work from jamming in wheel.

1/8"

Scaffolds should be provided with fall protection system on all open sides that are:

10 ft. or more in height

The required clearance for a crane operating in proximity to electric power lines is...

10'

In Ladders, Uniform spacing between rungs is required and the spacing should not exceed _____________.

12"

The capacity of a storage tank must not exceed how many gallons in case it was designed for underground and it was used for above ground storage?

2,500 gallons

Portable stepladders may not exceed ____ feet in length.

20

Guard rail should withstand __________ force applied horizontally.

200 pounds

Forklifts are designed to carry a capacity load at a standard load center, commonly

24"

To provide easy movement necessary to reduce potential for spilling or damaging containers inside a storage room, Aisle must be at least ________ wide.

3 feet

If slings stretched to more than ________ of original length should be discarded

3%

The side rails of a portable ladder must extend ____ above the upper landing surface.

36" (3 feet)

Scaffolds should be capable of supporting at least _______ times maximum intended load

4

Stair railings or handrails are required for stairs with ___ or more risers.

4

When free-standing mobile scaffold towers are used the height shall not exceed ___ times the minimum base dimensions.

4

Under general industry standards, guardrails are required if a platform is more than ___ above the surface.

4 Feet

Each step bolt installed on or after January 17, 2017 is capable of supporting at least.

4 times its maximum intended load

Approved cans and containers for the storage and transfer of flammable liquids shall not be designed to hold more than...

5 Gallons

Fixed industrial stairs should be strong enough for:

5x load, ≥1000 lb

An indoor storage room for flammable materials must have a gravity or mechanical exhaust system supplying at least ____ complete air changes per hour.

6

Under the construction standards, the threshold height at which fall protection is required is:

6 feet

Storage cabinets should contain no more than ________ gallons of flammable liquid.

60

Quantity of category 4 combustible liquid located outside of an inside storage room or storage cabinet in an industrial plant cannot exceed:

660 gallons in a single portable tank

A distance of ________ should be maintained between any 2 flammable or combustible above ground tanks.

>/= 3 feet

Define floor hole

A hole less than 12" but more than 1", through which materials can fall but not a person.

What should we use to prevent table saw kickbacks?

A splitter or wedge must be inserted into the saws kerf to separate material.

Robot safeguarding techniques are described in an ____ standard.

ANSI

Only store flammable liquids in ____________ glass, plastic, or metal containers and portable tanks that have vapor tight, self-closing covers.

Approved

On/off switch of the table saw should be located at what height? Why?

At knee height so employees can turn off the machine, while their hands are still on the material.

Define wall opening

At least 30" high and 18" wide, m through which a person may fall

How often should ladders be inspected?

Before initial use in each job shift

What are 2 methods that must be followed to prevent the accumulation of electrical charges which may cause explosion hazard when dispensing liquids from 2 containers?

Bonding & Grounding

Only store __________ materials in the same room with flammable liquids.

Compatible

Define Flammable Range:

Concentrations in which a flash will occur or a flame will travel if a mixture is ignited.

Which of the following ignites the easiest and the fastest? *Flammable liquid |* Flashpoint -Kerosene | -160 -Vegetable oil | -621 -Diesel | -126 -Formalin | -133

Diesel

Define grounding

Eliminating a difference in static charge potential between conductive objects and the ground. (ground wire)

T/F: Concrete block may be used as a support for scaffolding.

False

T/F: Concrete storage tanks can withstand a pressure that exceeds the designed pressure.

False

T/F: High density wooden ladders should never be used.

False

T/F: Holding tongues are good alternatives of machine safeguards

False

T/F: Mobile cranes are often equipped with outriggers. These are for stability on soft ground and do not affect lifting capacity.

False

T/F: Storage cabinets for flammable liquids must be made of steel.

False

T/F: Warning line systems are considered a valid form of fall protection.

False

___________ is the minimum temperature at which the liquid gives off vapors in a high enough concentration that it forms an ignitable mixture with the air near the surface of the liquid.

Flashpoint

Chains are the best choice for lifting ____________loads.

Hot

It is very important not to store or use flammable liquids around a(n):

Ignition source

Any mechanical power transmission apparatus that is __________ from the floor or working platform must be guarded.

Less than 7 feet

Safety protection system is needed for all fixed ladders when they are ________ in length.

More than 24 feet

Manhole steps shall be uniformly spaced at a vertical distance of: _________

Not more than 16"

What material would be incompatible with an oxidizer?

Organics

The device that is designed to physically remove an operator's hands from the point-of-operation hazard area as the machine begins to cycle:

Pull back device

What kind of hazard is when the machine or piece of equipment part moves back and forth or up and down and might create a struck by hazard?

Reciprocating hazard

The device that prevents operator's hands from being at the point of operation hazard:

Restrain Device

What does it mean to "ring" or "sound" a grinding wheel? Why is this done?

Tapping the grinding wheel with an object to check for damage. (Dull sound may reveal cracks/damage)

When the area that's surrounding above ground tanks is diked, then this area should be able to hold.....

The capacity of the largest tank within the diked area

Define the center of gravity

The point at which all weight is considered to be concentrated and about which all forces and moments are measured.

T/F: 30 gallon drums of flammable liquids may NOT be stacked in an indoor storage room.

True

T/F: After 11/2036 cages will not be allowed as a fall protection system in fixed ladders.

True

T/F: Category 1, 2, and 3 liquids with a flashpoint below 100F shall NOT be dispensed into containers unless the nozzle and container are electrically interconnected.

True

T/F: Since cranes have a built in safety factor, the rated load may be exceeded up to the safety factor.

True

T/F: When loading the forklift; Load as close to the front wheels as possible to minimize the load center distance. Load the lightest part toward the mast.

True

T/F:Awareness barriers are not considered adequate protection if there is a continual exposure to the hazards.

True

What is the "belt buckle" rule for ladder use?

Your belt buckle should remain between the uprights of the ladder.

Define floor opening

an opening 12" or more in its least dimension, through which a person can fall.

Robots are best used in...

high production processes requiring repeated routines

Safeguarding requirements for mechanical power presses do not apply if the opening is....

less than 1/4"

Define wall hole

opening of any width, with height between 1" and 30"

Define Bonding

physically connecting 2 conductive objects together with. bond wire to eliminate a difference in static charge between them.

All point of operation injuries in connection with mechanical power presses must be reported to OSHA.

within 30 days

What is an exception for Power transmission metal safeguards?

woodworking industries