Basic Concepts

Question 1

What role does worksafeBC play?

Answer 1

Monitors compliance with occupational health and safety regulations through site visits and inspections

Question 2

What role does technicalsafetybc play?

Answer 2

Gas and electrical permits and inspections. Also responsible for water slide inspections in the province

Question 3

What role does health.gov.bc play?

Answer 3

Responsible for ensuring compliance with the B.C. health act which directs how swimming pools are operated and maintained in bc

Question 4

What are 3 primary factors affecting quality of swimming pool water?

Answer 4

Physical, chemical, and biological

Question 5

What does physical factor for water quality include?

Answer 5

All circulation and filtration components

Question 6

What does chemical factor of water quality include?

Answer 6

Having balanced water to prevent corrosion and scale formation

Question 7

What water should be used when mixing your chemicals (if possible)

Answer 7

Pool water

Question 8

Do you add water to chemicals when mixing and why?

Answer 8

NO! This is dangerous and can cause cause straight chemical splashing out of vessel. Water first then chemical adding.

Question 9

What is rule of 2’s for chemical mixing?

Answer 9

Add half the amount of chemical required and wait at least 2 turnovers to avoid overdosing

Question 10

What is the maximum kg/500,000L of chemical you should add and why?

Answer 10

20kg/500,000L because the water may not absorb all the chemicals if concentration is too high

Question 11

Why should we deal with 1 chemical problem at a time?

Answer 11

A chemical soup can cause more problems and delays than what was originally there

Question 12

What must be done after every chemical addition and every change to chemical feed?

Answer 12

Documentation in appropriate log sheet

Question 13

How many meters is 1 foot?

Answer 13

0.304m = 1foot

Question 14

How many meters is 1 yard?

Answer 14

O.914m = 1 yard

Question 15

How many meters squared is 1 yard squared?

Answer 15

0.836 m squared = 1 yard squared

Question 16

How many meters cubed is 1 foot cubed?

Answer 16

0.028 m cubed = 1 foot cubed

Question 17

How many litres is 1 US gallon?

Answer 17

3.785 litres = 1 US gallon

Question 18

How many litres in 1 imperial gallon

Answer 18

4.546 litres = 1 imperial gallon

Question 19

How many US gallons in a litre

Answer 19

0.264 US gallons = 1 litre

Question 20

How many imperial gallons in 1 litre

Answer 20

0.212 imperial gallons = 1 litre

Question 21

How many inches in a meter

Answer 21

39.37 = 1 meter

Question 22

How many feet in a meter

Answer 22

3.28 feet = 1 meter

Question 23

How many yards in a meter

Answer 23

1.09 yards = 1 meter

Question 24

How many centimetres in a meter

Answer 24

100 cm = 1 meter

Question 25

How many ppm is 1 milligram per litre

Answer 25

1 milligram/litre = 1 ppm

Question 26

How many litres in 1 meter cubed

Answer 26

1000 litres = 1 meter cubed

Question 27

How many litres per second is 10 US gallons per minute

Answer 27

0.631 l/s = 10 US GPM

Question 28

Explain backwashing in a sand filtration system

Answer 28

Backwashing is reversing the flow of the sand filter which causes turbulence in the sand which cleans it and is sent out to waste.

Question 29

What is diatomaceous earth composed of?

Answer 29

Tiny fossils that trap particles when used as a filter layer.

Question 30

What is the formula to find volume of pools with sloping bottoms

Answer 30

Width * length * ( (depth1 + depth2) /2)