CBJ Safety and Compliance 2 — Questions and Answers
Question 1: When using a flexible shaft machine, what is the primary reason to avoid wearing loose clothing or jewelry?
- They can absorb lubricants and cause skin irritation
- They can become entangled in rotating components and cause injury (Correct answer)
- They interfere with electrical grounding of the tool
- They reduce the precision of grinding and polishing work
Correct answer: They can become entangled in rotating components and cause injury
Loose clothing and jewelry can catch on rotating shaft accessories, pulling the wearer into the tool and causing serious injury.
Question 2: Which OSHA Hazard Communication standard requires chemical manufacturers to provide Safety Data Sheets (SDS)?
- 29 CFR 1910.132
- 29 CFR 1910.1200 (Correct answer)
- 29 CFR 1910.94
- 29 CFR 1910.303
Correct answer: 29 CFR 1910.1200
OSHA's Hazard Communication Standard (HazCom) at 29 CFR 1910.1200 requires SDS for all hazardous chemicals in the workplace.
Question 3: What type of fire extinguisher should be used on an electrical fire at the jeweler's bench?
- Class A extinguisher (water-based)
- Class B extinguisher (CO2 or dry chemical for flammable liquids)
- Class C extinguisher (CO2 or dry chemical for electrical fires) (Correct answer)
- Class D extinguisher (dry powder for metal fires)
Correct answer: Class C extinguisher (CO2 or dry chemical for electrical fires)
Class C extinguishers use non-conductive agents like CO2 or dry chemical and are rated specifically for energized electrical equipment fires.
Question 4: When pickling metal after soldering, the safest procedure for adding work to the pickle pot is to:
- Use steel tweezers for a secure grip on hot metal
- Quench the piece in water first, then add to pickle with copper or plastic tongs (Correct answer)
- Add the piece while still red-hot to speed the cleaning process
- Pour fresh pickle solution directly over the piece on the bench
Correct answer: Quench the piece in water first, then add to pickle with copper or plastic tongs
Placing hot metal directly into pickle can cause dangerous spattering of acid; quenching first and using non-ferrous tongs prevents contamination and injury.
Question 5: In a jewelry workshop, Material Safety Data Sheets (now called SDS) must be:
- Kept locked in the manager's office for security
- Stored off-site with the chemical supplier
- Readily accessible to employees during their work shifts (Correct answer)
- Updated no more frequently than every five years
Correct answer: Readily accessible to employees during their work shifts
OSHA requires that SDS be immediately accessible to employees during their shifts so they can quickly reference hazard information in an emergency.
Question 6: Which ventilation method is most effective at capturing soldering fumes at the jeweler's bench?
- General dilution ventilation through ceiling-mounted HVAC
- Local exhaust ventilation with a capture hood positioned close to the source (Correct answer)
- Personal protective equipment such as a dust mask alone
- Opening windows and doors on opposite sides of the room
Correct answer: Local exhaust ventilation with a capture hood positioned close to the source
Local exhaust ventilation (LEV) captures contaminants at the point of generation before they disperse into breathing zones, making it far more effective than dilution ventilation.
Question 7: What is the correct procedure when a chemical splash to the eye occurs in the jewelry workshop?
- Apply neutralizing solution immediately, then seek medical help
- Flush the eye continuously with clean water for at least 15 minutes, then seek medical attention (Correct answer)
- Cover the eye with a dry bandage and go to urgent care immediately
- Rinse briefly with water for 1–2 minutes if burning persists
Correct answer: Flush the eye continuously with clean water for at least 15 minutes, then seek medical attention
Immediate and continuous irrigation for a minimum of 15 minutes dilutes and removes the chemical; brief rinsing is insufficient to prevent tissue damage.
CBJ Safety and Compliance 2
When using a flexible shaft machine, what is the primary reason to avoid wearing loose clothing or jewelry?