HSE 3: CODES

Question 1

NFPA 1

Answer 1

Uniform Fire Code

Question 2

NFPA 20

Answer 2

Standard for the Installation of Stationary Pumps for Fire

Question 3

NFPA 30

Answer 3

Flammable and Combustible Liquids Code

Question 4

NFPA 36

Answer 4

Solvent Extraction Plants

Question 5

NFPA 70

Answer 5

Electrical Safety

Question 6

NFPA 72

Answer 6

National Fire Alarm and Signaling Code

Question 7

NFPA 231

Answer 7

Standard for General Storage

Question 8

API 521

Answer 8

Pressure-Relieving and Depressuring Systems

Question 9

LD and LD,50

Answer 9

*LD
-Lethal Dose
- lowest conc to produce lethal effect

*LD,50
-Median Lethan Dose

Question 10

TLV

Answer 10

*Threshold Limit Value
-concentration of chemical in air a worker can be exposed to in a day

Question 11

IDLH

Answer 11

*Immediately Detrimental to Life and Health
-Max concentration a person be exposed to chemical in 30 minutes without negative effects

Question 12

Fire Triangle vs Fire Tetrahedron

Answer 12

*Fire Triangle
-Spark / Heat source
-Oxygen
-Fuel

*Fire Tetrahedron
-Now includes SUSTAINING CHEMICAL REACTION

Question 13

Why >LFL and <UFL is dangerous?

Answer 13

• Concentrations of fuel and oxygen is ideal.
• Combustion of atmosphere is apparent

Question 14

When to use:
*Safety Relief
*Rupture Disc

Answer 14

*Safety Relief
- Losing contents of vessel is unacceptable
- Respond also to very low pressures or vacuum
-Return to normal operations is ideal

*Rupture Disc
-Capital and maintenance savings are important
- Non-hazardous fluids
-Fast-acting response is required

Question 15

Purpose of Purging and Inerting

Answer 15

*Purging
-Release gases to relieve pressure

*Inerting
-Introduce nitrogen gas to increase pressure

Question 16

Define:
*Strength
*Stiffness
*Toughness
*Hardness

Answer 16

*Strength
-tenstile strength, resistance to stretching

*Stiffness
-resistance to bending and buckling

*Toughness
-resustance to fracture propagation

*Hardness
-resistance to scratching