CHST ACTUAL EXAM SCRIPT 2026
VERIFIED QUESTIONS AND SOLUTIONS
PREMIUM STUDY GUIDE
◉ Upper Flammable Limit. Answer: gives the richest flammable
mixture.
◉ 2011 Most Frequently Cited Cited Standards. Answer: 1.
scaffolding
2. Fall Protection
3. Hazard Communication
4. Respiratory Protection
5. Lockout/tagout
6. Electrical, wiring methods
7. Powered Industrial Trucks
8. laddars
9. Electrical, general requirements
10. Machine Guarding
,◉ Radiation. Answer: typically one of four types: alpha, beta,
gamma amd x-ray radiation (neutron encounted in nuclear poweer
plants)
◉ Alpha Radiation. Answer: heave, very short-range particle not
able to penetrate human skin, measurable by Geiger-Mueller probe.
travles short distances in air, but is not an external hazard, can be
harmful if inhaled, swallowed or absorbed through open wound
◉ Beta Radiation. Answer: light, short range particles (ejected
electron) travels several feet in air and is moderately penetrating.
penetrate skin to 'germinal layer' where new skin cells are
produced. harmful if deposited internally. Detected by GM probe
◉ Gamma and X Radiation. Answer: highly penetrating
electromagnetic radiation. travle many feet in air and many inches in
human tissue. Detected easily by survey meters with a sodium
iodide detector probe.
◉ Non-Ionizing Radiation. Answer: radiation that has enough
energy to move atoms in a molecule around or cause them to
vibrate, but not enough to remove elctrons. Good uses microwave
telecommunications and heat food, infrared lamps, radio waves
, ◉ Ionizing Radiation. Answer: has enough energy to remove tightly
bound electrons from atoms, thus creating ions. Good uses are
generate electric power, kill cancer cells, and manufacturing
◉ Slope Type A soil. Answer: < 20 feet 3/4:1
if open 24 hours or less and <12 feet 1/2:1
◉ Slope Type B soil. Answer: < 20 feet 1:1
◉ Slope Type C soil. Answer: < 20 feet 1.5:1
◉ Slope Type B and C soil with support or shield. Answer: shield to
a height at least 18 inches above the top of the vertical side then
slope according to ratio for that type of soil
◉ NFPA 704 Symbol (diamond)
top
left right
bottom. Answer: top RED Flammability
left BLUE Health
right YELLOW Reactivity
4-may detonate 3-strong shock or heat may detonate 2-violent
chemical reaction possible 1-unstable if heated 0-normally stable
VERIFIED QUESTIONS AND SOLUTIONS
PREMIUM STUDY GUIDE
◉ Upper Flammable Limit. Answer: gives the richest flammable
mixture.
◉ 2011 Most Frequently Cited Cited Standards. Answer: 1.
scaffolding
2. Fall Protection
3. Hazard Communication
4. Respiratory Protection
5. Lockout/tagout
6. Electrical, wiring methods
7. Powered Industrial Trucks
8. laddars
9. Electrical, general requirements
10. Machine Guarding
,◉ Radiation. Answer: typically one of four types: alpha, beta,
gamma amd x-ray radiation (neutron encounted in nuclear poweer
plants)
◉ Alpha Radiation. Answer: heave, very short-range particle not
able to penetrate human skin, measurable by Geiger-Mueller probe.
travles short distances in air, but is not an external hazard, can be
harmful if inhaled, swallowed or absorbed through open wound
◉ Beta Radiation. Answer: light, short range particles (ejected
electron) travels several feet in air and is moderately penetrating.
penetrate skin to 'germinal layer' where new skin cells are
produced. harmful if deposited internally. Detected by GM probe
◉ Gamma and X Radiation. Answer: highly penetrating
electromagnetic radiation. travle many feet in air and many inches in
human tissue. Detected easily by survey meters with a sodium
iodide detector probe.
◉ Non-Ionizing Radiation. Answer: radiation that has enough
energy to move atoms in a molecule around or cause them to
vibrate, but not enough to remove elctrons. Good uses microwave
telecommunications and heat food, infrared lamps, radio waves
, ◉ Ionizing Radiation. Answer: has enough energy to remove tightly
bound electrons from atoms, thus creating ions. Good uses are
generate electric power, kill cancer cells, and manufacturing
◉ Slope Type A soil. Answer: < 20 feet 3/4:1
if open 24 hours or less and <12 feet 1/2:1
◉ Slope Type B soil. Answer: < 20 feet 1:1
◉ Slope Type C soil. Answer: < 20 feet 1.5:1
◉ Slope Type B and C soil with support or shield. Answer: shield to
a height at least 18 inches above the top of the vertical side then
slope according to ratio for that type of soil
◉ NFPA 704 Symbol (diamond)
top
left right
bottom. Answer: top RED Flammability
left BLUE Health
right YELLOW Reactivity
4-may detonate 3-strong shock or heat may detonate 2-violent
chemical reaction possible 1-unstable if heated 0-normally stable
