Formulae

Question 1

Example of 20 decibels

Answer 1

Quiet library

Question 2

Example of 40 decibels

Answer 2

Conversation

Question 3

Example of 80 dB

Answer 3

Tractor cab

Question 4

Example of 90 dB

Answer 4

Drill

Question 5

Example of 140 dB

Answer 5

25m away from a jet engine at takeoff

Question 6

Missing Noise control technique;

Isolation, absorption, insulation, damping,

Answer 6

Silencers

Question 7

Missing Noise control technique;

Isolation, insulation, damping, silencers

Answer 7

Absorption

Question 8

Missing Noise control technique;

absorption, insulation, damping, silencers

Answer 8

Isolation

Question 9

AIR

Answer 9

Accident Incidence Rates

No of reportable injuries in a year x 100000/ average number employed throughout the year

Question 10

AFR

Answer 10

Accident Frequency Rate

No of reportable injuries in a period/ total hours worked during the period

Question 11

ASR

Answer 11

Accident Severity Rate

No of days lost x 1000/ No of hours worked

Question 12

MDR

Answer 12

Mean Duration Rate

Total No of days lost/ total No of accidents

Question 13

DR

Answer 13

Duration Rate

No of hours worked /
Total No of accidents

Question 14

RIDDOR

Answer 14

Reporting of Injuries, Diseases and Dangerous Occurrences Regulations