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Q:
46. Label the nip point(s).
Q:
31. For which of the following would a brake monitor and control system be required for applications in which the operator places his or her hands in the dies for feeding the press?
a. flywheel punch press with a four-point positive engagement
b. part revolution mechanical forming press
c. hydraulic press for deep-drawing
d. press brake
Q:
32. For which of the following would a brake monitor and control system be required for applications in which the operator places his or her hands in the dies for feeding the press?
a. part revolution press with a type A gate
b. part revolution press with a type B gate
c. part revolution press with an adjustable barrier guard
d. full revolution press with a sweep
Q:
33. For a part revolution mechanical power press used with hands-in-the-dies feeding and equipped with a Type A gate, does the OSHA standard permit an alternative to having a brake monitor and control system on the press? If so, what is this alternative?
Q:
34. For a part revolution mechanical power press used with hands-in-the-dies feeding and equipped with a Type B gate, does the OSHA standard permit an alternative to having a brake monitor and control system on the press? If so, what is this alternative?
Q:
35. For a part revolution mechanical power press used with hands-in-the-dies feeding and equipped with two hand controls, does the OSHA standard permit an alternative to having a brake monitor and control system on the press? If so, what is this alternative?
Q:
20. A legal alternative to safeguarding the point of operation on a mechanical power press is to employ a brake monitor and control system.a. trueb. false
Q:
36. For a part revolution mechanical power press used with hands-in-the-dies feeding and equipped with a presence sensing device, does the OSHA standard permit an alternative to having a brake monitor and control system on the press? If so, what is this alternative?
Q:
21. Which of the following is most effective on a full-revolution press?
a. die enclosure guard
b. presence sensing device
c. top stop limit
d. brake monitor and control system
Q:
37. Under what circumstances is a full revolution mechanical power press required to have a brake monitor and control system?
Q:
22. Which of the following is least effective on a full-revolution press?
a. die enclosure guard
b. presence sensing device
c. fixed barrier
d. pullbacks
Q:
38. Under what circumstances is a "normal limit reasonably established by the employer" required for top-stop overrun?
Q:
23. Which of the following is least effective on a full-revolution press?
a. die enclosure guard
b. pullbacks
c. fixed barrier
d. brake monitor and control system
Q:
39. What system checks for top-stop overrun? How often is it required to check it?
Q:
24. A "14-PT Niagara" is a full revolution press with 14 engagement points on the flywheel. Suppose that this press has a flywheel speed of 50 rpm. Calculate the safety distance for two-hand trips.
Q:
25. A mechanical power press equipped with brake and clutch has a stopping time of .3 seconds.a. Calculate the minimum distance for placement of a presence sensing device.b. Calculate the minimum distance for placement of a two-hand control device.
Q:
26. A mechanical power press, having a flywheel speed of 75 rpm and equipped with a brake and clutch, has a stopping time of .4 seconds.a. Calculate the minimum distance for placement of a presence sensing device.b. Calculate the minimum distance for placement of a two-hand control device.c. Calculate the minimum distance for placement of a two-hand trip device.
Q:
27. For full revolution presses with flywheel speeds of 75 rpm, calculate the mathematical limit for the minimum possible safety distance permissible for two hand trips, regardless of the design of the engagement mechanism.
Q:
28. Suppose that two hand trips are installed on a clutch-activated, part revolution press, the trips being incapable of triggering a brake to interrupt a stroke mid-cycle. If the flywheel speed is 120 rpm, calculate the safety distance for the two-hand trips.
Q:
29. A manufacturing engineer is considering purchase of a mechanical, full revolution, punch press for a high-efficiency workstation. You are asked to compute an appropriate safety distance for a two-hand trip safeguarding device for this machine.a. What additional design specifications for this machine would you need before responding to the manufacturing engineer's problem?b. What would be your response? (You may assume any arbitrary value(s) for data you listed in part (a) above as necessary to solve this problem.)
Q:
30. A manufacturing engineer is considering purchase of a mechanical, full revolution, punch press for a high-efficiency workstation. You are asked to compute an appropriate safety distance for an infrared barrier safeguarding device for this machine.a. What additional design specifications for this machine would you need before responding to the manufacturing engineer's problem?b. What would be your response? (You may assume any arbitrary value(s) for data you listed in part (a) above as necessary to solve this problem.)
Q:
15. Which of the following alternatives is suggested for an interlocked barrier guard when hand feeding is to be used for feeding a punch press?
a. anti-repeat
b. Type A gate
c. friction clutch
d. manual override
Q:
115. Which of the following is not considered a feasible method of protecting workers against injuries in the work envelope during the programming of an industrial robot? Explain your reasoning.a. Assuring that the technician doing the programming is well-trainedb. Providing readily accessible EPOsc. Assuring that the programmer has immediate control of robot motion power at all times via a hand-held "teach pendant" while programming.d. A fixed barrier guard.
Q:
16. To comply with OSHA standards for mechanical power presses, automatic feeding is an alternative to safeguarding the point of operation.a. trueb. false
Q:
1. Which of the following describes the motion of a Type A gate?
a. gate goes down, ram goes down, gate goes up, ram goes up
b. gate goes down, ram goes down, ram goes up, gate goes up
c. gate goes down and stays down until the setup supervisor releases it
d. none of the above
Q:
17. A legal alternative to safeguarding the point of operation on a mechanical power press is to employ hand feeding tools.a. trueb. false
Q:
2. Which of the following qualifies as a means of safeguarding the point of operation of a mechanical power press?
a. adjustable barrier
b. awareness barrier
c. hand-feeding tool
d. sliding bolster
Q:
18. A legal alternative to safeguarding the point of operation on a mechanical power press is to employ anti-repeat devices.a. trueb. false
Q:
3. Which of the following safeguarding strategies is prohibited for a full-revolution press?
a. die enclosure guard
b. Type B gate
c. Type A gate
d. presence-sensing device
Q:
19. A legal alternative to safeguarding the point of operation on a mechanical power press is to employ a top stop limit.a. trueb. false
Q:
4. Which of the following types of presses requires brake monitors and control systems?
a. full revolution, hands-in, 2-hand trip
b. full revolution, hands-out, 2-hand trip
c. part revolution, hands-in, 2-hand control
d. all of the above
Q:
5. Which of the following types of presses require point of operation safeguarding?
a. full revolution, hands-in
b. full revolution, hands-out
c. part revolution, hands-in
d. all of the above
Q:
6. Which of the following devices does not qualify as an OSHA-acceptable method of safeguarding the point of operation of mechanical power presses?
a. pull-outs (pull-backs)
b. sweeps
c. two-hand controls
d. interlocked barrier guards
Q:
7. Label the figure with the OSHA specified gaps.
Q:
8. What type of safeguard for the point of operation is convenient for presses that employ automatic feeding of coils of strip stock and automatic ejection of the finished parts?
Q:
9. Which of the following point of operation safeguarding methods is most appropriate for presses that employ automatic feeding of coils of strip stock and automatic ejection of the finished parts?
a. awareness barrier
b. fixed barrier
c. presence sensing device
d. two-hand controls
Q:
10. Which of the following point of operation safeguarding methods is most appropriate for presses that employ automatic feeding of coils of strip stock and automatic ejection of the finished parts?
a. tongs
b. brake monitor and control system
c. fixed barrier
d. pullbacks
Q:
11. Which of the following point of operation safeguarding methods is most appropriate for presses that employ automatic feeding of coils of strip stock and automatic ejection of the finished parts?
a. awareness barrier
b. top stop limit device
c. anti-repeat
d. fixed barrier
Q:
12. Which of the following point of operation safeguarding methods is most appropriate for presses that employ automatic feeding of coils of strip stock and automatic ejection of the finished parts?
a. die feeding devices
b. brake monitor and control system
c. fixed barrier
d. awareness barrier
Q:
13. What similar alternative is suggested for an interlocked barrier guard when hand feeding is to be used for feeding a punch press?
Q:
14. Which of the following alternatives is suggested for an interlocked barrier guard when hand feeding is to be used for feeding a punch press?
a. fixed barrier guard
b. die enclosure guard
c. brake monitor and control system
d. gate device
Q:
98. The strategy of "guarding by distance" is a positive control to keep the operator or other personnel out of the danger zone at all times.a. trueb. false
Q:
114. Explain the term "work envelope" in the context of industrial robots.
Q:
99. Explain the difference between the strategies of "guarding by location" and "guarding by distance."
Q:
100. Which do you think is safer, guarding by "location" or guarding by "distance?" Justify your answer.
Q:
101. Recent advances in plastics and films have introduced which of the following additional hazards to the point of operation?
a. electrical shock
b. noise exposure
c. burn hazards
d. amputation hazards
Q:
102. Describe circumstances under which the point of operation of a machine might present a radiation hazard.
Q:
103. Presence sensing devices can be used to effectively protect operators from burns from heat processes.a. trueb. false
Q:
104. Interlocked barrier guards can be used to effectively protect operators from burns from heat processes.a. trueb. false
Q:
105. Describe two strategies for dealing with microorganisms that may develop in metalworking fluids.
Q:
106. Describe a drawback to using biocides in metalworking fluids to combat microorganism growth.
Q:
107. Metalworking fluids present which of the following concerns that should be addressed by the safety and health manager?a. Guarding by locationb. Fire hazardsc. Guarding by distanced. Presence-sensing systems
Q:
108. All of the following are concerns when using metalworking fluids, EXCEPT:
a. toxicity of the ingredients
b. fire hazards
c. disposal
d. guarding by distance
Q:
109. Which of the following methods of dealing with machining chips has inherent hazards associated with it? Explain these hazards.a. chip removal by the machine during the cutting processb. barriers to insure the chips do not escape the chip bin during removalc. blowing the chips away from the point of operation using compressed air
Q:
94. Without going into formulas and numerical specifics, explain the OSHA standard for the required DISTANCE between the operator and the danger zone on mechanical power presses. In other words, what variables are taken into consideration in determining what this distance should be?
Q:
110. Explain how industrial robots can enhance the safety of the workplace.
Q:
95. OSHA does not recognize "guarding by location" as a valid method of protecting the operator from the point of operation of a machine.a. trueb. false
Q:
111. The versatility of industrial robots is a direct result of their characteristic:
a. strength
b. power
c. size
d. programmability
Q:
96. Although OSHA may recognize "guarding by location" as a valid method of guarding, such methods of guarding are illegal.
a. true
Q:
112. Describe the principal safety hazard associated with industrial robots?
Q:
97. Explain the difficulty in defending "guarding by location" as a strategy for guarding the point of operation.
Q:
113. A valid issue to be considered in a decision to employ industrial robots in the workplace is public sentiment.a. trueb. false
Q:
82. Compressed air used for cleaning is required to be reduced to less than 30 psi.a. trueb. false
Q:
83. Chip guarding and/or personal protective equipmenta. are required unless compressed air is reduced to less than 30 psib. are not required when compressed air is used for cleaningc. are always required when compressed air is used for cleaningd. none of the above
Q:
84. One approach to guarding air compressors is to place them in a room by themselves.a. trueb. false
Q:
85. What three precautions are recommended if air compressors are guarded by placing them in a separate room?
Q:
86. A mechanical power press is equipped with a gate-like device that closes before the ram goes down and reopens during the upward stroke. Which of the following types of safeguarding devices does the arrangement comply with?
a. Type A gate
b. Type B gate
c. Type C gate
d. Interlocked barrier guard
Q:
87. A mechanical power press is equipped with a gate-like device that closes before the ram goes down and stays closed until the ram has completed its upward stroke. Which of the following types of safeguarding devices does the arrangement comply with?
a. Type A gate
b. Type B gate
c. Type C gate
d. Interlocked barrier guard
Q:
88. A full revolution punch press operates at 60 rpm and has a safety distance of exactly 63 inches. From this data figure out the number of engagement points and justify your answer with calculations.
Q:
89. It can be said that for some presses the slower the speed of the ram, the safer the press, but for other presses, the faster the speed of the ram, the safer the press. Explain the logic behind this apparent contradiction, and describe the physical features that distinguish these two types of presses.
Q:
104. Which of the following types of slings are permitted in the presence of caustic vapors?
a. Polyester slings
b. Polypropylene web slings
c. Web slings with aluminum fittings
d. Metal mesh slings
e. All of the above
Q:
90. Interlocked barrier guards are similar to "gates" but somewhat different. Explain this difference. Also, explain the difference between "Type A" and "Type B" gates. Comment on the legality of hand feeding of punch presses with each of these three devices (interlocked barrier guards, Type A gates, and Type B gates).
Q:
106. Which of the following types of slings is not permitted in the presence of acid or phenolic vapors?a. Nylon web slingsb. Polypropylene web slingsc. Metal mesh slingsd. Alloy steel chain slingse. All of the abovef. None of the above
Q:
91. In the field of protection of the point of operation of dangerous machines a distinction is made between the terms "guarding" and "safeguarding." Explain the difference between these two terms. Also comment on the legality of the use of each of the following methods to protect the operator:a. awareness barriersb. tongs and other handfeeding toolsc. sweeps
Q:
107. For which of the following types of slings are repairs permitted?a. Natural fiber ropeb. Nylon fiber ropec. Polyester fiber roped. Nylon webe. All of the abovef. None of the above
Q:
92. Which of the following methods of safeguarding the point of operation of a machine is classified as "no hands in the dies."
a. restraints
b. pullbacks
c. presence-sensing devices
d. two-hand controls
Q:
108. Rated capacity markings are required on all types of slings.a. trueb. false
Q:
93. For a certain class of industrial machines OSHA standards require "brake monitors." The standards also make reference to "brake stop-time measurement devices." Name the class of machines and explain the difference in purpose between the two devices "brake monitor" and "brake stop-time measurement device."
Q:
109. Repairs are prohibited on all types of slings.a. trueb. false
Q:
110. For which of the following types of slings is the employer required to maintain certificates of proof test?a. Alloy steel chainb. Metal meshc. Natural fiber roped. Synthetic fiber ropee. All of the abovef. None of the above