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Code of Federal Regulations Title 46. Shipping § 46.154.1872 Cargo emergency jettisoning

Current as of January 02, 2025 | Updated by Findlaw Staff

(a) The master shall ensure that emergency jettisoning piping under § 154.356, except bow and stern loading and discharging piping, is only used when an emergency exists.

(b) Emergency jettisoning piping when being used may be outside of the transverse tank location under § 154.310.

(c) The master shall ensure that cargo is not jettisoned in a U.S. port.

(d) When ethylene oxide is carried, the master shall ensure that the emergency jettisoning piping with associated pumps and fittings is on-line and ready for use for an emergency.

(e) The master shall lock closed the shut-off valves under § 154.356 when the emergency jettisoning piping is not in use.

(f) The person in charge of cargo transfer shall ensure that after the emergency jettisoning piping is used it is purged of cargo vapors with inert gas.

(g) The person in charge of cargo transfer shall ensure that entrances, forced or natural ventilation intakes, exhausts, and other openings to accommodation, service, or control spaces facing the emergency jettisoning piping area and alongside the emergency jettisoning piping are closed when this piping is in use.

TABLE 4—SUMMARY OF MINIMUM REQUIREMENTS

Cargo name1

Ship type

Independent tank type C required

Control of cargo tank vapor space

Vapor detection2

Acetaldehyde

IIG/IIPG

 

Inert

I & T

Ammonia, anhydrous.

IIG/IIPG

 

T

Butadiene

IIG/IIPG

 

Inert

I

Butane

IIG/IIPG

 

I

Butylene

IIG/IIPG

 

 

I

Dimethylamine

IIG/IIPG

 

 

I & T

Ethane

IIG

 

 

I

Ethylamine

IIG/IIPG

 

 

I & T

Ethyl Chloride

IIG/IIPG

 

 

I & T

Ethylene

IIG

 

 

I

Ethylene oxide

IG

Yes

Inert

I & T

Methane (LNG)

IIG

 

 

I

Methyl acetylene-propadiene mixture.

IIG/IIPG

 

 

I

Methyl bromide

IG

Yes

 

I & T

Methyl chloride

IIG/IIPG

 

 

I & T

Nitrogen

IIIG

 

 

O

Propane

IIG/IIPG

 

 

I

Propylene

IIG/IIPG

 

 

I

Refrigerant

IIIG

 

 

 

Sulfur dioxide

IG

Yes

Dry

T

Vinyl chloride

IIG/IIPG

 

 

I & T

Cargo name1

Gauging3

Electrical hazard class and group4

Special requirements

Acetaldehyde

C

I-C

154.1410 (c), 154.1410, 154.1710, 154.1720, 154.1870.

Ammonia, anhydrous.

C

I-D

154.1000, 154.1400 (c), 154.1405, 154.1410, 154.1702 (b), (c), (e), 154.1760, 154.1870.

Butadiene

R

I-B

154.1702 (b), (d), (f), 154.1710, 154.1750, 154.1818.

Butane

R

I-D

None.

Butylene

R

I-D

None.

Dimethylamine

C

I-C

154.1400 (c), 154.1405, 154.1410, 154.1702 (b), (c), (e), 154.1870.

Ethane

R

I-D

None.

Ethylamine

C

I-C

154.1400 (c), 154.1405, 154.1410, 154.1702 (b), (c), (e), 154.1870.

Ethyl Chloride

R

I-D

154.1870.

Ethylene

R

I-C

None.

Ethylene oxide

C

I-B

154.660 (b) (3), 154.1400 (c), 154.1405, 154.1410, 154.1702 (b), (d), (f), 154.1705, 154.1710, 154.1720, 154.1725, 154.1730, 154.1870 (a), (b).

Methane (LNG)

C

I-D

154.703 through 154.709, 154.1854.

Methyl acetylene-propadiene mixture.

R

I

154.1735.

Methyl bromide

C

I-D

154.660 (b) (3), 154.1345 (c) (d), 154.1400 (c), 154.1405, 154.1410, 154.1702 (a), (d), 154.1705, 154.1720, 154.1870 (a), (b).

Methyl chloride

C

I-D

154.1702 (a), 154.1870.

Nitrogen

C

154.1755.

Propane

R

I-D

None.

Propylene

R

I-D

None.

Refrigerant

R

None.

Sulfur dioxide

C

154.660 (b) (3), 154.1345 (c), (d), 154.1400 (c), 154.1405, 154.1410, 154.1705, 154.1715, 154.1720, 154.1870 (a), (b).

Vinyl chloride

C

I-D

154.1405, 154.1410, 154.1702 (a) (b) (d) (f), 154.1710, 154.1740, 154.1745, 154.1750, 154.1818, 154.1830 (f), 154.1870.

1 Refrigerant gases include non-toxic, non-flammable gases such as: dichlorodifluoromethane, dichloromonofluoromethane, dichlorotetrafluoroethane, monochlorodifluoromethane, monochlorotetrafluoroethane, and monochlorotrifluoromethane.

2 As used in this column: “I” stands for flammable vapor detection; “T” stands for toxic vapor detection; “O” stands for oxygen detection; and see §§ 154.1345 thru 154.1360.

3 As used in this column: “C” stands for closed gauging; “R” stands for restricted gauging; and see § 154.1300.

4 The designations used in this column are from the National Electrical Code.

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Cite this article: FindLaw.com - Code of Federal Regulations Title 46. Shipping § 46.154.1872 Cargo emergency jettisoning - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-46-shipping/cfr-sect-46-154-1872/

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