Mesothelioma Navy Mesothelioma Navy Technology Applications 2 — Questions and Answers
Question 1: Which naval technology was primarily responsible for widespread asbestos insulation use in engine rooms aboard U.S. Navy vessels during World War II?
- Steam turbine propulsion systems (Correct answer)
- Diesel generator cooling systems
- Radar antenna arrays
- Sonar dome housing
Correct answer: Steam turbine propulsion systems
High-temperature steam turbine propulsion systems required extensive thermal insulation, making asbestos-wrapped pipes and engine components ubiquitous in Navy engine rooms.
Question 2: What was the primary function of asbestos-containing gaskets used in Navy shipboard piping systems?
- To prevent electromagnetic interference
- To create pressure-tight seals at pipe joints and valve connections (Correct answer)
- To reduce corrosion in saltwater environments
- To dampen vibration from propeller shafts
Correct answer: To create pressure-tight seals at pipe joints and valve connections
Asbestos gaskets provided durable, heat-resistant seals at pipe joints and valve connections throughout shipboard steam and hydraulic systems.
Question 3: Navy boiler room workers face elevated mesothelioma risk because boiler lagging — the insulating wrap around boilers — commonly contained asbestos percentages as high as:
- 5–10%
- 15–25%
- 50–85% (Correct answer)
- 95–100%
Correct answer: 50–85%
Boiler lagging materials used in Navy ships from the 1930s through the 1970s often contained 50–85% chrysotile or amosite asbestos by weight.
Question 4: Which shipboard firefighting technology historically exposed Navy damage-control crews to asbestos fibers?
- Carbon dioxide flooding systems
- Asbestos fire blankets and protective clothing (Correct answer)
- Halon gas suppression systems
- Foam deluge systems
Correct answer: Asbestos fire blankets and protective clothing
Asbestos fire blankets and heat-resistant protective clothing were standard firefighting equipment aboard Navy vessels, directly exposing damage-control personnel.
Question 5: How did distillation technology aboard Navy ships contribute to asbestos exposure for engineering personnel?
- Evaporator units and distilling plants used asbestos insulation on high-temperature condensers and flash chambers (Correct answer)
- Reverse osmosis membranes contained asbestos binders
- Chlorination equipment housings were lined with asbestos tiles
- Freshwater storage tanks were sealed with asbestos caulk
Correct answer: Evaporator units and distilling plants used asbestos insulation on high-temperature condensers and flash chambers
Evaporator and distilling plant components operated at high temperatures and were heavily insulated with asbestos to maintain thermal efficiency and protect nearby personnel.
Question 6: What role did Navy ship classification and construction standards play in asbestos exposure risk differences between vessel types?
- Submarines had negligible asbestos because their hulls were sealed
- Aircraft carriers and destroyers used identical asbestos quantities per square foot
- Submarines had higher concentration exposure because confined spaces prevented fiber dilution (Correct answer)
- Destroyer escorts contained no asbestos in their propulsion systems
Correct answer: Submarines had higher concentration exposure because confined spaces prevented fiber dilution
Submarine crews experienced more concentrated asbestos fiber exposure than surface ship crews because the sealed, confined spaces of submarines prevented airborne fibers from dispersing.
Question 7: Which Navy shipyard process most directly released asbestos fibers into the breathing zone of workers performing vessel maintenance?
- Painting hull exteriors below the waterline
- Removing old pipe insulation during overhaul and repair operations (Correct answer)
- Installing radar electronics in combat information centers
- Welding steel deck plates together
Correct answer: Removing old pipe insulation during overhaul and repair operations
Stripping old pipe insulation during ship overhaul and repair released enormous quantities of friable asbestos fibers directly into the breathing zone of insulators and nearby tradespeople.
Mesothelioma Navy Mesothelioma Navy Technology Applications 2
Which naval technology was primarily responsible for widespread asbestos insulation use in engine rooms aboard U.S.
Navy vessels during World War II?