PDF《CCS 技术通告》

For example, pressure and temperature regulators and monitors, flow controllers, signal processors and control panels. ? equipment to detect, alarm and initiate safety actions;

For example, detectors to identify fuel releases and subsequent fires, and to initiate shutdown of the fuel supply to consumers. ? equipment to vent, contain or handle operations outside of that intended (i.e. outside of process norms);

For example, vent lines, masts and valves, overflow tanks, secondary containment, and ventilation arrangements. ? fire-fighting appliances and arrangements to protect surfaces from fire, fuel contact and escalation of fire;

For example, water sprays, water curtains and fire dampers. 1. International Code of Safety for Ships Using Gases or Other Low-Flashpoint Fuels (IGF Code) - as adopted at MSC

95 (June 2015). 2. IGF Code (ref

1 of this document), Part A, Chapter 4.1. 3. IGF Code (ref

1 of this document), Part A, Chapter 4.2, Paragraph 4.2.1. No.

146 (Aug 2016) No.146 Page

2 of

24 IACS Rec.

2016 No.

146 (cont) ? equipment to purge and inert fuel lines;

For example, equipment to store and supply nitrogen for the purposes of purging/inerting bunker lines, and equipment used for the safe transfer/disposal of fuel. ? structures and constructions to house equipment;

For example, fuel storage hold spaces, tank connection spaces and fuel preparation rooms. In agreement with stakeholders (e.g. the Administration) the scope can exclude items that have been previously subjected to a risk assessment, provided there are no changes to '

context of use'

and mitigation measures taken as a result of previous risk assessment are to be included. This can help reduce assessment time and effort. The term '

context of use'

(used above) refers to differences, such as differences in design or arrangement, installed location, mode of operation, use of surrounding spaces, and the number and type of persons exposed. For example, if an item is located on a cargo ship on- deck, it is a change to the '

context of use'

if the same item is then installed below deck on a passenger ship. In addressing '

context of use'

it is important to recognise that these '

differences'

can significantly decrease or increase risk resulting in the need for fewer, more, changed or alternative means to eliminate or mitigate the risks. With regards to liquefied natural gas (LNG), the IGF Code states that risk assessment need only be conducted where explicitly required by paragraphs 5.10.5, 5.12.3, 6.4.1.1, 6.4.15.4.7.2, 8.3.1.1, 13.4.1, 13.7 and 15.8.1.10 as well as by paragraphs 4.4 and 6.8 of the annex . Hence, the IGF Code allows the scope of the risk assessment to be limited to these paragraphs. It is important to note that there are differences of opinion on the scope of risk assessment required by these paragraphs. Therefore, the views of stakeholders and approval by the Administration should be sought when finalising the scope of the risk assessment. The risk assessment includes consideration of bunkering equipment installed on board but does not cover the bunkering operation of: ship arrival, approach and mooring, preparation, testing and connection, fuel transfer, and completion and disconnection. Bunkering of fuel is the subject of separate assessment as per ISO/TC18683 and reference should be made to appropriate and specific guidance. The IGF Code requires that consideration is given to physical layout, operation and maintenance. Typically, the risks associated with maintenance are controlled by job specific risk assessments before the activity is undertaken. Therefore, consideration of maintenance is taken to mean high-level consideration of design and arrangements to facilitate a safe and appropriate working environment. This requires consideration of, for example, equipment isolation, ventilation of spaces, emergency evacuation, heating and lighting, and access to equipment. The purpose of this is to minimise the likelihood of unwanted events resulting in harm during maintenance. In addition, the purpose is to minimise the likelihood of unwan........