P-5010 CH-6, WATER AFLOAT Flashcards Preview

*** OCCUPATIONAL REFERENCES - SEPT 2014 *** > P-5010 CH-6, WATER AFLOAT > Flashcards

Flashcards in P-5010 CH-6, WATER AFLOAT Deck (32):
1

Standards for water afloat?

CHBUMED

2

NSTMs

531
533

3

Drinking water NSF/ANSI standard?

60

4

Potable water risers how far off deck?

18"

5

Steps for ship to shore connection

5

6

3 Types of distillation plants?

Steam
Waste heat
Vapor compression

7

Max shower water temp

120 F

8

"potable water only" ever ten feet of hose, how high are the letters?

1/4"

9

*** Not less than ____ FAC after 30 minute contact time? ***

*** 0.2 ppm ***

10

Mechanical treatment is preferred to

Batch treatment

11

HTH has what percent available chlorine?

65-70% (6oz bottle)

(only 5.25 in Sodium Hypochlorite i.e. household bleach)

12

HTH storage?

7 day ready use supply

No more than 48 6oz bottles stowed at any locker/bin

13

Color for label "Hazardous material, calcium hypochlorite"

Red letters
White background

14

Bromine shelf life?

2 yrs

15

Two types of brominators?

In Line
Recirc

16

Batch treatment?

1oz HTH added to 5,000 gallons = 1ppm inital chlorine concentration

17

Tanks should achieve 0.2ppm FAC for what contact time?

30min

18

Inspect HTH bottles how often?

Q 3 months and prior to deployment

19

Shore supply is tested for _____ daily

Halogen

20

Bacteriological testing 1/4 of ice machines how often?

Weekly

21

DPD - Diethyl-p-phenylene tests what?

Chlorine/bromine residuals

22

DPD accuracy

Within 10%

23

Spectophotphotometric accuracy?

+2 %

24

Calcium hypochlorite introduces clear fluid when tank is how full

1/4

25

Sodium hypochlorite does not require what?

mixing, dilution required

26

Procedures for positive coliform sample?

Repeat sample from same tap

2 other samples from w/in 5 service connections (one up/one down stream)

27

Gallons of water per person per day?

12 – 35 gallons

28

three ¼ inch vented holes at bottom of box when storing?

Calcium Hypochlorite

29

"Butterworthing" is a term used for?

Mechanical cleaning

30

Superchlorination

• Chlorinate tank water level to 100 ppm FAC
• Water must be tested hourly for a total of four hours
• If ppm drops below 50 ppm FAC, restart entire process

31

Emergency Potable Water Tanks

• Must be drained & refilled quarterly (every 3 months)
• Must be open & inspected for sludge / foreign matter every three years
• Bacteriological analysis from tanks performed monthly

32

Water Log = Maintained by medical for how long?

two years

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