CPA Sanitation & Disease Prevention 3 — Questions and Answers
Question 1: What is the primary risk of drinking from an unverified water source at a remote drilling site?
- Heavy metal poisoning from rock runoff
- Waterborne pathogens causing gastrointestinal illness (Correct answer)
- Skin rashes from hard water minerals
- Respiratory irritation from dissolved gases
Correct answer: Waterborne pathogens causing gastrointestinal illness
Unverified water sources may contain pathogens such as Giardia, Cryptosporidium, or bacteria that cause severe gastrointestinal illness.
Question 2: Which water treatment method is MOST effective against both bacteria and viruses at a remote petroleum camp?
- Settling and filtering with cloth
- Boiling water for at least 1 minute (Correct answer)
- Adding table salt to water
- Exposing water to sunlight for 2 hours
Correct answer: Boiling water for at least 1 minute
Boiling water for at least 1 minute kills bacteria, viruses, and most parasites, making it the most universally reliable field treatment method.
Question 3: Leptospirosis can be contracted at petroleum field sites primarily through which route?
- Inhaling dust from dry soil
- Skin contact with water contaminated by infected animal urine (Correct answer)
- Eating undercooked plant material
- Contact with crude oil on the skin
Correct answer: Skin contact with water contaminated by infected animal urine
Leptospirosis bacteria enter through skin abrasions or mucous membranes following contact with water or soil contaminated by infected animal urine.
Question 4: What is the safest method to dispose of liquid waste containing petroleum byproducts at a field site?
- Pour into a nearby drainage ditch
- Dilute with water and release into soil
- Collect in labeled, sealed containers for licensed disposal (Correct answer)
- Burn in an open pit
Correct answer: Collect in labeled, sealed containers for licensed disposal
EPA and RCRA regulations require petroleum liquid waste to be collected in approved sealed containers and removed by a licensed hazardous waste disposal service.
Question 5: Which vector is most commonly associated with disease transmission in petroleum field camps located in tropical or subtropical regions?
- Ticks
- Mosquitoes (Correct answer)
- Fleas
- Sandflies
Correct answer: Mosquitoes
Mosquitoes are the primary disease vectors in tropical and subtropical field environments, transmitting malaria, dengue fever, and Zika virus.
Question 6: When decontaminating skin after exposure to a petroleum solvent, which sequence is correct?
- Apply neutralizer, then rinse with water
- Flush with large amounts of water first, then wash with soap (Correct answer)
- Wipe with a dry cloth, then apply antiseptic
- Apply petroleum jelly to bind the solvent before washing
Correct answer: Flush with large amounts of water first, then wash with soap
Flushing with copious water immediately dilutes and removes the chemical before soap is used to break down remaining residue.
Question 7: What does the term 'fecal-oral transmission route' mean in the context of petroleum worksite disease prevention?
- Disease spreads through breathing contaminated air
- Pathogens pass from fecal matter to the mouth via contaminated hands, water, or food (Correct answer)
- Illness is contracted through skin contact with feces
- Infection occurs through insect bites near latrines
Correct answer: Pathogens pass from fecal matter to the mouth via contaminated hands, water, or food
Fecal-oral transmission occurs when pathogens from feces contaminate food, water, or surfaces that are then introduced to the mouth, typically via unwashed hands.
CPA Sanitation & Disease Prevention 3
What is the primary risk of drinking from an unverified water source at a remote drilling site?