Equipment Maintenance & Safety Flashcards
7 cards from real CCO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Equipment Maintenance & Safety flashcards as text
What is the primary purpose of the refractory lining inside a cremation chamber?
Answer: To reflect heat back and protect the steel shell from extreme temperatures
Refractory lining acts as thermal insulation, reflecting heat inward and shielding the retort's steel shell from temperatures that can exceed 1,800°F.
How often should the retort's refractory lining be inspected for cracks or spalling under normal operational conditions?
Answer: At least annually or per manufacturer recommendation
Refractory should be inspected at least annually—or per manufacturer guidelines—because cracks can compromise heat retention and chamber integrity.
When a retort's burner ignites but flame fails to establish within the trial-for-ignition period, the control system should:
Answer: Shut down and lock out, requiring a manual reset
Safety controls are designed to lock out the burner on ignition failure to prevent unburned gas accumulation, requiring a deliberate manual reset.
Which maintenance task helps prevent carbon buildup from clogging the secondary (afterburner) chamber?
Answer: Brushing and vacuuming the secondary chamber during scheduled downtime
Periodic brushing and vacuuming of the secondary chamber during downtime removes accumulated carbon deposits that restrict gas flow and combustion efficiency.
A crematory operator notices the stack temperature is consistently lower than normal during afterburner operation. The MOST likely cause is:
Answer: A blockage or buildup reducing airflow in the secondary chamber or stack
Low stack temperature during afterburner operation typically indicates restricted airflow caused by carbon buildup, a damaged damper, or a blocked flue.
Personal protective equipment (PPE) required when removing processed cremated remains from the retort should include at minimum:
Answer: Heat-resistant gloves, safety glasses, and a dust mask or respirator
Removing cremated remains requires heat-resistant gloves to protect against residual heat, safety glasses for fragment protection, and a dust mask/respirator to prevent inhalation of fine particulates.
What does 'operator lockout/tagout' (LOTO) procedure require before performing maintenance on a retort's burner assembly?
Answer: Isolating all energy sources, locking them in the off position, and tagging before any work begins
LOTO requires isolating and physically locking out all energy sources—electrical, gas, hydraulic—and affixing warning tags before maintenance begins to prevent accidental energization.