STP

Question 1

Hazards of a STP

Answer 1

• Chemical Calcium hypochlorite
  Gases Hydrogen sulphide, methane (Flammable) & chlorine (Burn lungs if inhaled)
  Diseases Hepatitus, gastro-enteritus,typhoid

Question 2

Hydrogen sulphide dangers

Answer 2

Smells of rotten eggs, lethal in even small amounts, numbs nasal passages

• • 150-400ppm-Injurious dizziness,coughing,irritation of breathing passage
• 400-700ppm-Dangerous coughing,unconciousness.
  * 1000ppm* Death*

Question 3

Precautions to be taken in STP

Answer 3

• Be innoculated
• Good hygiene
• PPE
• Atmosphere monitor