1. |
By performing destructive thickness and metallurgical examination,the average post-incident thickness of the re-used ring around the periphery of the fracture, as measured by calipers, was ____________? |
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0.107 inches. |
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0.2 inches. |
2. |
According to Figure 23, the city water first enters into?
![Pressure Vessel Explosion at a Box Company in St. Louis, Missouri 1](/wp-content/themes/pdhexpress/course-images/pressure-vessel-explosion-at-box-company-stlouis-missouri-1.webp) |
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Water softener |
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Steam generator |
3. |
The full form of IMC |
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International Manufacturing Code |
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International Mechanical Code |
4. |
Which one of the following three components is true about BLEVE requirement?
- Agas that exists above its normal atmospheric pressure boiling point;
- Containment that causes the pressure on the liquid to be sufficiently high to suppress boiling;
- Sudden gain of containment to rapidly drop the pressure on the liquid
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Only 2 |
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All of the above |
5. |
The City Records did have installation records for the two Loy-Lange steam generators, which indicated that the generators were installed in the 1800s.
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True |
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False |
6. |
Based on mechanical integrity section, in August of 2012, the 10-inch outlet nozzle near the bottom head leaked due to corrosion. |
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True |
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False |
7. |
In which vessel most of the water evaporated into steam and any water that did not was drained |
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Steam separator |
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Make-up tank |
8. |
According Figure 27, the blowdown drain nozzle is of which size?
![Pressure Vessel Explosion at a Box Company in St. Louis, Missouri 2](/wp-content/themes/pdhexpress/course-images/pressure-vessel-explosion-at-box-company-stlouis-missouri-2.webp) |
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2" |
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4" |
9. |
What does UT stands for? |
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Ultrasonic Thickness |
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Universal Testing |
10. |
According to Table 1, what is the percentage of mobile homes?
Population |
Raceand Ethnicity |
Number of Housing Units |
Types of Housing Units |
Per Capita Income |
% Poverty |
51,668 |
- 44.3% White
- 47.4% Black
- <1% Native
- 1.6% Asian
- 1% Islander
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27,750 |
- SingleUnit 40.8%
- Multi-Unit 58.2%
- MobileHome <1%
- Boat,RV,Van,etc. <1%
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$36,157 |
20.4% |
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< 10% |
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< 1% |
11. |
According to Loy-Lange, at the time of the incident, Loy-Lange employed 71 people at its facility and currently employs __________________?
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77 people |
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200 people |
12. |
The full form of API. |
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American Petroleum Institute |
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American Pharmacy Institute |
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