Section 5 Fuel Cells and Associated Components

501. General

1. The For the fuel cell module, the requirements in KS C IEC 62282-2 "Fuel cell ogy- Sec.2:fuel cell module" or equivalent standards may be complied with, but will also take the environmental and operating conditions in a ship into account.

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502. Fuel Cell Stacks

1. For FC stacks which have a total electrical output greater than 1 MW and which contain ble materials, additional fire protection measures may be required by the Society.

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2. If fuel cells are used for supplying essential consumers, then every fuel cell stack is to be sub- jected to a performance test at the manufacturer’'s works. The electrical output, airtightness and the thermal output of the fuel cells are to be verified by means of a suitable performance test.

3. If fuel cell stacks are used for supplying essential consumers, then redundancy is to be ensured.

503.

FC Fuel Compressors

1. The FC fuel compressor is to be fitted with accessories and instrumentation necessary for efficient and reliable function.

2. The FC fuel compressor and FC fuel supply are to be arranged for manual remote emergency stop from the following locations:

(1) The cargo control room (if any);

(2) Navigation bridge;

(3) Engine control room; and

(4) Fire control station.

3. The possibility for fatigue problem of the high-pressure FC fuel piping due to vibration caused by the high-pressure FC fuel compressor must be considered.

504. Evaporators

1. Heating media for liquefied-gas evaporators or gas preheaters that are routed back into spaces lo- cated outside the area of the gas treatment plant is to be passed through degassing containers which are located within the hazardous area.

2. A gas detection and alarm system is to be provided within the degassing container.

3. The outlet opening of the vent pipe of the degassing container is to be located in a safe area and provided with an approved flame arrester.

505. Fuel Reformer Systems

1. General

(1) Fuel reformer systems are to be designed for automatic operation and equipped with all the in dicating and control facilities required for assessment and control of the process.

(2) The chemical processes taking place within the unit are to be monitored.

(3) If limit values determined for the control process are exceeded, the unit must be switched off and inter-locked by an independent protective device.

(4) It is to be possible to switch off the reformer unit from a permanently the installation space.

(5) If high surface temperatures may occur, the corresponding insulation or

be provided.

2. Firing equipment

Firing equipment in fuel reformer systems is to be designed for automatic ation (even for emergencies) is not permissible.

3. Gas purification

accessible point outside

contact protection is to

operation. Manual oper

The gas purity required for the operation of the fuel cell is to be monitored by suitable methods. If the determined limit values are exceeded, an alarm is to be generated or the system is to be switched off. If this requirement is not met for installations, verification shall be provided that no additional hazard can occur through inadmissible impurities.

4. Exhaust gases

The exhaust gases arising during the reforming process is to be discharged safely to the open air at an adequate distance from openings to accommodation, machinery and service spaces.

5. Residual gases

The recirculation of fuel (residual gas) from the FC to the reformer is permissible. The re- circulation is to be protected by an automatic shut-off valve.