6.14

Question 1

How often will the habitability and sanitation inspection be done an by who?

Answer 1

quarterly

MDR

Question 2

Medical department must be present during the clean up of what?

Answer 2

Clean ups, disinfection involving food service, living spaces and medical spaces

Question 3

The CHT operates in what three modes

Answer 3

Restricted waters
At sea
in Port

Question 4

Most commonly used sanitation device used by the Navy

Answer 4

Type II B Marine sanitation device

Question 5

Functioning elements of the CHT systems are?

Answer 5

Collection
hold
Transfer

Question 6

Collection element

Answer 6

(a) Soil drains or sewage (from toilets and urinals)
(b) Gray water drains (from showers, laundries, and galleys)
(c) Diverter valves which direct the wastewater over the side or to the holding tanks

Question 7

Holding elements are sized to hold how much waste

Answer 7

sized t hold 12 hrs period depending on individual ship constraints

Question 8

Transfer elements have and do what

Answer 8

Each tank is equipped with two sewage pumps which are connected in parallel to
discharge sewage and gray water to a receiving facility, Ship Waste Off-Loading
Barge (SWOB) or directly overboard.

Question 9

What are manual pump?

Answer 9

Deactivates the pumps automatically when the low liquid level
reaches 10% of tank volume to maintain pump suction.

Question 10

Untreated sewage tanks must be aerated if the hold how much?

Answer 10

2,000gal

explosive if not rated

Question 11

What do you need to enter a space with H2S is present?

Answer 11

Airline respirator and full face mask

post a watch with SCBA out whenever MSD is open

Question 12

Pump rooms require what?

Answer 12

Slight negative pressure (exhaust ventilation within 9 inches of deck).
Two Emergency Escape Breathing Devices (EEBD). (good for 10min)

Question 13

(Health hazards associated with CHT)

Answer 13

Hydrogen sulfide

rotten egg smell

Question 14

people who work with CHT must keep what up to date?

Answer 14

Basic immz
polio
TDAP

Question 15

Required PPE for CHT workers

Answer 15

(a) Coveralls
(b) Rubber Boots
(c) Rubber Gloves
(d) Face Shields
(e) SCBA (when necessary

Question 16

Procedure manual for CHT is

Answer 16

NAVSHIPS TECHNICAL MANUAL, Chapter 593

“POLLUTION CONTROL”.

Question 17

steps for spill cleanup procedures?

Answer 17

-Thoroughly wash down with water and detergent.
-Medical, food service and berthing spaces must be disinfected with approved EPA disinfectants:
-Bilges contaminated with sewage must be pumped out, washed down with a fire
hose, and pumped out again.
-Potable water supply suspected of sewage contamination, must be secured,
disinfected and re-checked until the water is determined to be safe.

Question 18

What are the approved EPA disinfectants

Answer 18

Germicides
Phenolic Type
Iodine type

Question 19

Color coding requirements for CHT

Answer 19

Gold on the valves and operating levers

(excluding hand wheels of gauge valves located on gauge boards).

Question 20

outside CHT fittings should be what color

Answer 20

same as surrounding area and clearly labeled

Question 21

Overboard discharge of untreated sewage within us water and territorial seas is prohibited within what distance?

Answer 21

3nm

Question 22

At sea mode operates how?

Answer 22

1) Sewage and gray waters, including those stored in holding tanks are
diverted or discharged overboard.

Question 23

in port mode operates how?

Answer 23

Sewage and gray water is collected in holding tanks and discharged into a
sanitary sewer through sewer risers or Ship Waste Off Load Barges
(SWOB).

Question 24

Restricted water mode operates how?

Answer 24

Sewage is collected and stored in holding tanks.

2) Gray water is discharged overboard via diverter valves

Question 25

Procedures for all ship-shore sewage transfer is found in what?

Answer 25

Navfac Pub 340