4.11 regular inspection and maintenance
4.11.1 fire extinguishers should be in accordance with the instructions of the production plant regularly to check, the time interval is not more than 1 years.
At least 1 of each of the fire extinguishers equipped on the 4.11.1.1 ship shall be carried out at least 5 years in each of the fire extinguishers, as part of the fire drill.
4.11.1.2 all fire extinguishers and their propulsion cylinders shall be carried out in accordance with the generally accepted standards or production plant for each 10 years for hydraulic test.
4.11.1.3 maintenance and inspection shall be conducted by a qualified person in accordance with the inspection guide in table 4.11.1.3, or under the supervision of the.

4.11.2 shall maintain inspection records. Records shall indicate the date of inspection, maintenance type, and whether or not it has been carried out under pressure.

4.11.3 fire extinguishers shall be marked with the visible discharge indicator.

4.11.4 fire extinguisher re filling that manufacturing plant shall provide, and readily available on board.

4.11.5 - Inspection Guide
A check the safety pin and indicator to check if the fire extinguisher is used.
B pressure indicator is installed, check the pressure is within the specified range. Check the dust cover and safety valve on the pressure indicator in normal position. Check whether there is external fire extinguishers may affect the safe operation of the corrosion, dents or damage.
C weight weigh fire extinguishers, fire extinguishers and completely filling its weight is compared.
D hose and nozzle check hoses and nozzles are clean or damaged.
E operation to check if there is a operation instructions, the handwriting is clear.
F re check the filling water and foam filling for reuse, the filling material into a clean container and examine the suitability of continue to use. Check all the filling container.
Check whether G powder filling powder suitable for use again. To ensure that it flows freely, without any evidence of a lump or other substance.
H gas cylinder inspection for damage or corrosion.
Check the air channel and operating principles of every five years and every 10 years of check for emissions testing toward the ventilation hole and lid ventilation blowing device, to ensure the smooth channel. If possible, check the hose, nozzle filter, injection pipe and vent valve. Such as application, check operation and injection controller. Wash or gas as required.
Operating principle to check whether the safety pin can be moved, the leverage is damaged.
Gas cylinder checking for damage or corrosion. Said the gas cylinder, check the weight is within the specified range.
Washer and hose diaphragm check washer, if possible, to replace the hose diaphragm.
Water and foam for internal inspection. Check if the corrosion, the inner layer is worse. Check for leaks and damage to the container.
Dry powder, check whether there is a corrosive or inner layer is worse.
Check the water and foam again after filling according to the production plant that replace the filling material.
Re assemble the fire extinguisher according to the instructions of the production plant.
Maintain the contents of the labels, including the total weight.
Fire extinguisher shelves check fire extinguisher bracket.
Report on the status of fire extinguisher maintenance.

4.11.6 fire extinguisher
Each fire extinguisher should be clearly marked with the following information:
1 production plant name;
2 fire type and level of fire extinguisher;
3 type and quantity of fire extinguishing agent;
4 approval details;
5 and re filling instructions (recommended to illustrate the diagrams are given in the form of operation, and the user can understand the language attached instructions text);
6 year of production;
Temperature range for normal use of.
7 fire extinguisher;
8 test pressure.