Reference no: EM13477720
Question 1
Stainless steel is considered dangerous to weld because it contains:
Answer
crystalline silica.
copper.
iron.
chromium.
Question 2
For accident prevention purposes, pressures above _____ psig must be regarded as hazardous.
Answer
0
15
100
1000
Question 3
If there is fusion of the parent metal in a joining process the process is designated as:
Answer
sintering.
brazing.
soldering.
welding.
Question 4
Which of the following is an inerting agent for welding processes?
Answer
Cadmium
Argon
MAPP gas
Slag
Question 5
What standard was developed to ensure the safe design and construction of pressure vessels?
Answer
National Board Inspection Code (NBIC)
ASME Boiler and Pressure Vessel Code
American Welding Society
ANSI Power Piping Code
Question 6
The current drawn by a 60-watt table lamp circuit is approximately:
Answer
0.1 amp.
1/2 amp.
1 amp.
5 amp.
Question 7
Which of the following substances is emphasized as a hazard in the OSHA welding standard?
Answer
Silica
Manganese
Magnesium
Zinc
Question 8
Name the two causal categories of pressure vessel accidents.
Answer
Material strength and poor maintenance
Material compatibility and poor operating practices
Poor design and faulty assembly/installation
Engineering and user
Question 9
Assume heart fibrillation occurs at 75 mA. A common household circuit rated at 15 amps can carry approximately how many times as much current passing through the heart muscle as is required to produce heart fibrillation?
Answer
Twice as much
Ten times as much
200 times as much
500 times as much
Question 10
Weatherproof electrical outlets as seen installed on decks and patios are
Answer
not approved for hazardous locations.
approved for Class I, Division 1.
approved for Class I, Division 2.
approved for Class III, Division 2.
Question 11
Identify two oxides of nitrogen that are included in the NOx category. Explain the acute and chronic effects of each.
Question 12
At a metal processing plant, sheet steel became jammed in a tempering mill. An operator began using a cutting torch to remove the steel. Hot slag from the torch ignited oil deposits and oil-soaked paper towels lying around the machine. This caused exposed hydraulic and lubricating lines to weaken. Leaking oil ignited, resulting in a fierce blaze that damaged the machinery and a portion of the roof deck and framing above the machinery. For the next three months, sheet steel had to be sent off-site for tempering until the mill could be restored to service. The total loss was estimated at more than $3 million. After the loss, management agreed to begin using a hot work permit system.
a. Use the following link to explain the typical contents of a hot work permit:
b. Describe how use of a hot work permit could have prevented the above incident.
Question 13
Reflect on what you learned in this unit within Safety Engineering. Describe something that you learned within this unit that can be applied to your career or an area of interest.
Your response should be at least 75 words in length. This is an opportunity for you to reflect and allow your professor to provide feedback.
Question 14
Reflect on what you learned in this unit within Safety Engineering. Describe something that you had difficulty with and where you think the difficulty lies.
Your response should be at least 75 words in length. This is an opportunity for you to reflect and allow your professor to provide feedback.