Safety

Question 1

Describe a typical HAZOP process

Answer 1

Taking a full description of a process and systematically questioning every part of it to establish how many deviations from the design intent can arise. Once identified, an assessment is made as to whether such deviations and their consequences can have a negative effect upon the safe and efficient operation of the plant. If considered necessary, action is then taken to remedy the situation.

Question 2

Identify some highly reactive chemicals with appropriate handling precautions

Answer 2

• Organic peroxides - sensitive to light, shock, sparks and other accidental forms of ignition
• Peroxide formers
• Hydrogen and chlorine - react in the presence of light
• Alkali metals (sodium, potassium, lithium) - react violently with water and liberate hydrogen gas
• Acetylides, asides, organic nitrates, organic nitrates and peroxides - shock sensitive materials

Question 3

Identify the main features of a safety management program

Answer 3

PSM elements:

1. Employee participation
2. Process safety information (PSI)
3. Process hazard analysis (PHA)
4. Operating procedures
5. Training
6. Contractor safety
7. Pre-startup safety review
8. Mechanical integrity
9. Hot work program
10. Management of change (MOC)
11. Incident investigation
12. Emergency planning and response
13. Compliance audits
14. Trade secrets