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safety test 2 > October 2 > Flashcards

October 2 Flashcards

1
Q

True or False: Any machine part, function, or process which may cause injury must be safeguarded

A

True - When the operation of a machine or accidental contact with it can injure the operator or others in the vicinity, the hazards must be either controlled or eliminated

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2
Q

General Requirements for all Machines - comparable to what?

A

the general duty clause but for all machines

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3
Q

General Requirements for machines - types of guarding - protect from hazards as those created by :

A

point of operation, ingoing nip points, rotating parts, flying chips and sparks

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4
Q

General Requirements for machine guards:

A

Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible. The guard shall be such that it does not offer an accident hazard in itself

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5
Q

Point of Operation definition

A

Point of Operation is the area on a machine where work is actually being performed upon the material being processed

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6
Q

Point of Operation Guarding

A

ii. The point of operation of machines whose operation exposes an employee to injury, shall be guarded. The guarding device shall be in conformity with any appropriate standards therefore, or, in the absence of applicable specific standards, shall be so designed and constructed as to prevent the operator from having any part of his body in the danger zone during the operating cycle.

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7
Q

Point of Operation guarding - special hand tools

A

iii. Special hand tools for placing and removing material shall be such as to permit easy handling of material without the operator placing a hand in the danger zone

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8
Q

True or False: Special Hand tools for placing an removing material can be used in lieu of other guarding required by this section

A

False - they can only be used to supplement protection provided

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9
Q

concerns with E-stops

A
  • E-stops must NOT be used to routinely control processes
  • E-stops must be periodically tested
  • E-stops must be accessible
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10
Q

Exposure of blades

A

When the periphery of the blades of a fan is less than 7 feet above the floor or working level, the blades shall be guarded. The guard shall have openings no larger than (1/2) inch

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11
Q

Anchoring fixed machinery

A

machines designed for a fixed location shall be securely anchored to prevent walking or moving

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12
Q

Dangerous moving parts in three basic areas require safeguarding:

A
  1. Point of operation
  2. Power Transmission Apparatus - all components of the mechanical system which transmit energy to the part of the machine performing the work (flywheels, pulleys, belts, couplings, chains, cranks, gears).
  3. Other moving parts - all parts of the machine which move while the machine is working (including reciprocating, rotating, and transverse moving parts, feet mechanisms, and auxiliary parts of the machine
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13
Q

Safeguard must meet these minimum general requirements:

A
  • prevent contact
  • be securely attached
  • protect from falling objects
  • create no new hazards
  • create no interference
  • allow safe lubrication
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14
Q

what factors affect how to safeguard a machine?

A

type of operation, size/shape of stock, method of handling, physical layout of work area, type of material, and production requirements/limitations

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15
Q

5 classifications of safeguards

A
  • guards
  • devices
  • location/distance
  • potential feeding and ejection
  • miscellaneous aids
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16
Q

types of guards

A
  • fixed ( guard on bike chain)
  • interlocked (interlock on microwave, washing machine)
  • adjustable (guard on a ban saw)
  • self-adjusting (guard on circular saw)
17
Q

types of devices

A
  • presence sensing (photocell, light curtain)
  • Pullback
  • Restraint - prevents you from getting into point of operation
  • safety controls (e.g., two-hand controls, trips)
  • gates (interlocked gats, covers, etc.)
18
Q

difference between two hand trip and two hand control

A
  • two-hand trip - push 2 buttons and it trips machine (goes through a cycle)
  • two - hand control - hold 2 buttons and machine goes until you let at least 1 go
19
Q

Potential feeding and ejection methods to improve safety for the operator:

A
  • automatic feed
  • semi- automatic feed
  • automatic ejection
  • semi-automatic ejection
  • robot
20
Q

miscellaneous aid

A
  • awareness barriers
  • miscellaneous protective shields
  • hand-feeding tools and holding fixtures
21
Q

Point of Operation guarding:

A
  • where machine interfaces with materials/parts

- should be designed to allow work to enter but keep operator out

22
Q

Nip points are created by:

A
  • two or more points rotating in opposite direction
  • parts rotating tangentially to each other
  • parts rotating close to a fixed part
  • may not need to guard entire wheel, but just the nip point
23
Q

“Push Stick”

A

a narrow strip of wood or other soft material with a notch cut into one end and which is used to push short pieces of material through saws.

24
Q

“Block”

A

short block of wood, provided with a handle similar to that of a plane and shoulder at the rear end, which is used for pushing short stock over revolving cutters.

25
Q

A mechanical or electrical power control shall be provided on each machine to…

A

to make it possible for the operator to cut off the power from each machine without leaving his position at the point of operation

26
Q

on applications where injury to the operator might result if motors were to restart after power failures,

A

provision shall be made to prevent machines from automatically restarting upon restoration of power

27
Q

Each operating treadle (foot pedal) shall…

A

shall be protected against unexpected or accidental tripping

28
Q

Hand-fed cross-cut table saws

A

each circular crosscut table saw shall be guarded by a hood which shall meet all the requirements of paragraph (c)(1)

29
Q

Radial Saws:

A
  • an adjustable stop shall be provided to prevent the forward travel of the blade beyond the position necessary to complete the cut in repetitive operations
  • Installation shall be in such a manner that the front end of the unit will be slightly higher than the rear, so as to cause the cutting head to return gently to the starting position when released by the operator
30
Q

Band Saws and Band resaws

A

all portions of the saw blade shall be enclosed or guarded, except for the working portion of the blade between the bottom of the guide rolls and the table. Band saw wheels shall be fully encased.

31
Q

Sanding machines -

A

belt sanding machines shall be provided with guards at each nip point where the sanding belt runs on to a pulley. These guards shall effectively prevent the hand or fingers of the operator from coming in contact with the nip points. The unused run of the sanding belt shall be guarded against accidental contact

32
Q

When is a machine not guarded?

A

if you can reach over, under, around, or through

33
Q

Inspection and maintenance of woodworking machinery: dull, badly set, improperly filed, or improperly tensioned saws shall be…

A

immediately removed from service, before they begin to cause the material to stick, jam, or kick back when it is fed to the saw at normal speed. Saws to which gum has adhered on the sides shall be immediately cleaned.

34
Q

sharpening or tensioning of saw blades or cutter shall be done…

A

only by persons of demonstrated skill in this kind of work

safety test 2 (8 decks)

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