Mesothelioma Navy Mesothelioma Navy Technology Applications 3 — Questions and Answers
Question 1: What technical characteristic of amosite asbestos made it particularly preferred for Navy high-temperature pipe insulation compared to chrysotile?
- Greater flexibility and ease of application
- Higher melting point and superior heat resistance (Correct answer)
- Lower cost per board foot of coverage
- Better resistance to seawater corrosion
Correct answer: Higher melting point and superior heat resistance
Amosite (brown asbestos) withstands higher continuous operating temperatures than chrysotile, making it the preferred choice for insulating high-pressure steam pipes aboard Navy vessels.
Question 2: Navy electricians who worked with which specific technology were exposed to asbestos in wiring and switchboard components?
- Sonar transducer arrays
- Arc chutes and electrical panel boards containing asbestos arc barriers (Correct answer)
- Radio antenna tuning coils
- Gyroscope compass housings
Correct answer: Arc chutes and electrical panel boards containing asbestos arc barriers
Electrical switchboards and panel boards contained asbestos arc chutes — barriers designed to extinguish electrical arcs — exposing electricians during installation and maintenance.
Question 3: How did Navy ship decommissioning and scrapping operations in the post-World War II era create a second wave of asbestos exposure risk?
- Scrapping workers were exposed to asbestos released from cutting torch operations on insulated components (Correct answer)
- Decommissioned ships were repainted with asbestos-containing primer
- Scrap metal itself contains asbestos fibers embedded in steel
- Decomposing hull materials leached asbestos into groundwater at shipyards
Correct answer: Scrapping workers were exposed to asbestos released from cutting torch operations on insulated components
Cutting torches used to dismantle decommissioned vessels vaporized and released asbestos fibers from insulation, creating acute exposure hazards for shipbreaking workers.
Question 4: Which Navy occupational specialty had direct daily contact with asbestos-containing thermal insulation as a core part of their job duties?
- Gunner's mate
- Machinist's mate working in engineering spaces (Correct answer)
- Quartermaster
- Yeoman
Correct answer: Machinist's mate working in engineering spaces
Machinist's mates operating in engine rooms, boiler rooms, and fire rooms worked continuously alongside and often directly with asbestos-insulated pipes, valves, and machinery.
Question 5: What was the significance of the MIL-I-24244 military specification in the history of Navy asbestos exposure?
- It established maximum allowable asbestos fiber concentrations in shipboard air
- It was the procurement standard requiring asbestos insulation in shipboard thermal applications (Correct answer)
- It mandated asbestos removal from all active Navy vessels by 1975
- It classified asbestos as a carcinogen for Navy occupational health purposes
Correct answer: It was the procurement standard requiring asbestos insulation in shipboard thermal applications
Military specification MIL-I-24244 and similar procurement standards required asbestos-containing insulation materials in Navy construction, ensuring systemic use across the fleet.
Question 6: Why did Navy shipyard pipefitters who worked on steam-driven catapult systems on aircraft carriers face especially high asbestos exposure?
- Catapult systems used asbestos-reinforced launch cables
- High-pressure steam catapult lines required extremely thick asbestos lagging to handle operating pressures exceeding 1,000 psi (Correct answer)
- Aircraft flight deck coatings contained asbestos for heat resistance
- Jet blast deflectors were constructed from asbestos composites
Correct answer: High-pressure steam catapult lines required extremely thick asbestos lagging to handle operating pressures exceeding 1,000 psi
Steam catapult systems operated at extremely high pressures requiring thick asbestos lagging on launch steam pipes, creating significant insulator exposure during installation and maintenance.
Question 7: In U.S. Navy mesothelioma litigation, what concept is used to establish corporate liability when asbestos products were used aboard government vessels?
- The government contractor defense and its limitations under Boyle v. United Technologies (Correct answer)
- The doctrine of sovereign immunity barring all claims
- Absolute strict liability for all asbestos manufacturers
- The last injurious exposure rule applied exclusively to Navy cases
Correct answer: The government contractor defense and its limitations under Boyle v. United Technologies
The government contractor defense, established in Boyle v. United Technologies, allows some asbestos manufacturers to claim immunity but has significant limitations when warnings were suppressed.
Mesothelioma Navy Mesothelioma Navy Technology Applications 3
What technical characteristic of amosite asbestos made it particularly preferred for Navy high-temperature pipe insulation compared to chrysotile?