MANAGE CHT AND WASTEWATER SURVEILLANCE PROGRAM

Question 1

NAVMED P-5010, Chapter 7

Answer 1

Wastewater Treatment and Disposal Afloat, Jan 1995

Question 2

Training for potential health hazards associated with
human wastes, proper personal hygiene necessary to reduce the risks associated with working with MSD systems, and the correct procedures for cleaning and
disinfecting contaminated spaces is done when?

Answer 2

Indoctrination of personnel and Periodically

Question 3

Medical Department Representative must be present during clean-ups and disinfection operations involving _______, _________, And _______

Answer 3

food service spaces
living spaces
medical spaces

Question 4

Collection Hold and Transfer System (CHT) Operates in three modes

Answer 4

(a) Restricted waters
(b) At sea
(c) In port

Question 5

Most common Type of CHT

Answer 5

Type II-B Marine sanitation device

Question 6

Functional elements of the CHT system

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

Functional elements of the CHT system

Hold element

Answer 7

Tanks that retain sewage during transit of restricted water for eventual disposal.

Question 7

Functional elements of the CHT system

Hold element

Answer 7

Tanks that retain sewage during transit of restricted water for eventual disposal.

Tanks are normally sized 12 hour holding period depending on individual
ship constraints.

Question 8

Tanks are normally sized for a ______ holding period depending on individual ship constraints.

Answer 8

12 hour

Question 9

Functional elements of the CHT system

Transfer element

Answer 9

(a) Sewage pumps
(b) Overboard and deck connection discharge piping
(c) Associated diverter valves and check valves
(d) 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 10

_________ poses the greatest danger to ships and personnel.

Answer 10

Hydrogen Sulfide (H2S)

Question 11

Untreated sewage when held in tanks larger than _______ gallons must be aerated. Can become explosive if not aerated

Answer 11

2,000

Question 12

Escape Breathing Devices (EEBD) are good for how long?

Answer 12

10 minutes, based on the individual’s breathing.

Question 13

Toxic or explosive gases associated with CHT

Answer 13

(a) Hydrogen sulfide
(b) Methane
(c) Ammonia
(d) Carbon Dioxide

Question 14

Hydrogen sulfide smells like what?

Answer 14

“Rotten Egg” smell

Question 15

Personnel who are in contact with wastewater or work in wastewater treatment plant must keep their basic immunization current. Specifically:

Answer 15

(a) Polio (IPV)

b) Tetanus diphtheria (Td

Question 16

Two types of EPA approved Germicides

Answer 16

a) Phenolic Type

b) Iodine Type

Question 17

NAVSHIPS TECHNICAL MANUAL, Chapter 593

Answer 17

POLLUTION CONTROL

Question 18

color coding and labeling for CHT systems

Answer 18

• Ship’s interior color code is gold
• Exterior deck discharge same color as surrounding structure.
• Deck discharge stations must be clearly labeled

Question 19

The overboard discharge of untreated sewage within U.S. waters and territorial seas is prohibited within how many miles of shore.

Answer 19

Within 3 nautical miles of shore.

Question 20

In restricted waters what can be discharged overboard

Answer 20

Gray water via diverter valves.

Question 21

In port sewage and gray water is collected in holding tanks and discharged into a _____ through sewer risers or __________________

Answer 21

sanitary sewer

Ship Waste Off Load Barges (SWOB)

Question 21

In port sewage and gray water is collected in holding tanks and discharged into a _____ through sewer risers or __________________

Answer 21

sanitary sewer

Ship Waste Off Load Barges (SWOB)