Sch 9Atmosphere sampling equipment, measuring equipment and related procedures

Schedule 9 Atmosphere sampling equipment, measuring equipment and related procedures

 

 (section 68)

1 Portable gas detectors

 1.1 The following ships must have a portable gas detector:

(a) an oil tanker;

(b) a chemical tanker;

(c) a gas carrier;

(d) a cargo ship carrying any substance that may give off combustible gases;

(e) a ship that carries a substance likely to deplete the oxygen concentration in a space;

(f) a ship where a person may have to enter a confined space.

 1.2 The gas detector must meet the standards mentioned in Table 1.

 Table 1 Gas detector standards

| Performance requirements | Installation, use and maintenance requirements | | (a) AS/NZS 60079.29.1:2008 —Explosive atmospheres —Gas detectors – Performance requirements of detectors for flammable gases; or<br>(b) IEC 60079-29-1 Ed. 1.0. Gas detectors —Performance requirements of detectors for flammable gasses | (c) AS/NZS60079.29.2:2008 Gas detectors — selection, installation, use and maintenance of detectors for flammable gases and oxygen; or<br>(d) IEC 60079-29-2 Ed 1.0 Gas detectors — selection, installation, use and maintenance of detectors for flammable gases and oxygen |

 1.3 The gas detector must indicate:

(a) the percentage of oxygen by volume in the sample tested; and

(b) the combustible gas concentration as a percentage of the lower explosive limit (LEL) or lower flammable limit (LFL).

2 Cargo spaces on tankers with inert gas capability

 2.1 The following ships must have a portable gas detector capable of accurately measuring hydrocarbon percentage by volume in an inert atmosphere:

(a) an oil tanker with inert gas capability;

(b) a chemical tanker with inert gas capability;

(c) a liquefied gas carrier.

 2.2 The owner of a ship with a flue gas generated inert gas system must ensure that the gas detector is designed to operate in inert gas containing a high proportion of carbon dioxide.

3 Detection of other gases

 3.1 The following ships must carry the equipment and information mentioned in subclause 3.2:

(a) a ship carrying cargo that may give off toxic, corrosive or other gases; and

(b) a ship where persons may enter a confined space that may contain toxic, corrosive or other gases.

 3.2 The equipment and information required is:

(a) an instrument or instruments, with instructions for use, capable of detecting those gases and indicating their proportions, either as a direct reading of parts per million (ppm), or milligrams per cubic metre (mg/m3); and