©NINJANERD 2024/2025. YEAR PUBLISHED 2024.
FSE 1150- Cremation History, Principles
and Practice- CH 6- Recommendations
for Crematory Operations Exam Q&A
100% Pass
Combustion - ✔✔Described by CANA as the act or instance of burning,
and involves a chemical reaction in which oxygen is rapidly combined with
fuel, giving off heat
Perfect Combustion - ✔✔a result of mixing and burning the exact
proportions of fuel and oxygen so that no unburned fuel or oxygen remains.
Two phases of the perfect combustion - ✔✔- primary combustion in the
ignition chamber. Most cremationists refer to this as the primary chamber
- secondary combustion- where the products of the combustion process
settle and are further combusted. Ultimately the remaining gases will
discharge from the crematory stack.
, ©NINJANERD 2024/2025. YEAR PUBLISHED 2024.
Opacity - ✔✔degree to which light is reduced when viewed through a
smoke plume of visible emissions
According to the EPA visible emissions that consist of smoke and flame are
indicators of: - ✔✔improper combustion and excessive particulate emission
Charging Door - ✔✔door to the primary chamber typically electrically or
hydraulically operated
Primary Chamber - ✔✔- where actual cremation takes place
- heat and air are mixed creating combustion
- 1400 to 1800F
-ideal temperature is 1600F
Secondary Chamber - ✔✔- holds unburned combustion from primary
chamber until complete combustion is achieved
- allows proper and controlled air flow to the stack
- 1400 to 1800 is acceptable with the more ideal temperature being 1650-
1700F
- It is important the secondary chamber run at least 50 degrees hotter than
the main chamber for drafting and airflow protection
Hearth - ✔✔floor of the crematory
FSE 1150- Cremation History, Principles
and Practice- CH 6- Recommendations
for Crematory Operations Exam Q&A
100% Pass
Combustion - ✔✔Described by CANA as the act or instance of burning,
and involves a chemical reaction in which oxygen is rapidly combined with
fuel, giving off heat
Perfect Combustion - ✔✔a result of mixing and burning the exact
proportions of fuel and oxygen so that no unburned fuel or oxygen remains.
Two phases of the perfect combustion - ✔✔- primary combustion in the
ignition chamber. Most cremationists refer to this as the primary chamber
- secondary combustion- where the products of the combustion process
settle and are further combusted. Ultimately the remaining gases will
discharge from the crematory stack.
, ©NINJANERD 2024/2025. YEAR PUBLISHED 2024.
Opacity - ✔✔degree to which light is reduced when viewed through a
smoke plume of visible emissions
According to the EPA visible emissions that consist of smoke and flame are
indicators of: - ✔✔improper combustion and excessive particulate emission
Charging Door - ✔✔door to the primary chamber typically electrically or
hydraulically operated
Primary Chamber - ✔✔- where actual cremation takes place
- heat and air are mixed creating combustion
- 1400 to 1800F
-ideal temperature is 1600F
Secondary Chamber - ✔✔- holds unburned combustion from primary
chamber until complete combustion is achieved
- allows proper and controlled air flow to the stack
- 1400 to 1800 is acceptable with the more ideal temperature being 1650-
1700F
- It is important the secondary chamber run at least 50 degrees hotter than
the main chamber for drafting and airflow protection
Hearth - ✔✔floor of the crematory
