What does ld 50 mean in industrial toxicology

Assignment Help Chemical Engineering
Reference no: EM132263

QUESTION 1

a) The standard service illuminance for specific work activities is given in lux. What units are used in calculating lux and what instrument could be used to appraise the lighting level in a workplace?

b) Name the five components of a typical local exhaust ventilation system and their respective functions

c) What are the units commonly used in occupational exposure limits for quantifying the concentration of dust particles, vapours or gases and fibres?

d) What does LD 50 mean in Industrial Toxicology?

e) Give a brief outline of a Hearing Conservation Programme

QUESTION 2

Describe the features of the two main types of industrial ventilation systems used to control airborne contaminants in the work environment and list their respective limitations?

QUESTION 3

Explain what is meant by the term Threshold Limit Values (TLVs). Describe briefly the different TLVs used by Industrial Hygienists
Outline the strengths and weaknesses of these workplace exposure limits and illustrate how they may best be used as part of an overall control strategy for hazardous substances.

QUESTION 4

What is Hand-Arm Vibration Syndrome (HAVS)? Your answer should include the causes, signs and symptoms, health effects on workers and common occupations at risk

How is exposure to Hand-Arm Vibration assessed and what are the control measures used to prevent HAVS?

QUESTION 5

The monitoring of airborne contaminants has long been relied on the taking of air samples to assess occupational exposure levels. What are the different components of a sampling train?

Outline the 5 common drawbacks that an Industrial Hygienist has to avoid to ensure valid air sampling at the workplace.

 

Reference no: EM132263

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