Answer MET Question 52

 Question: Briefly describe the maintenance routines carried out for emergency batteries onboard.

Answer: Maintenance of battery

a. Battries should be placed in well ventilated rooms.

b. Ventilation fan should be Spark proof room should be kept dry and clean no smoking sign should be displayed in and out of the room no naked light is allowed only explosive proof light is allowed.

c. Condition of battery should be checked regularly, in Lead acid battery the specific gravity is checked by hydrometer. Fully charge battery has a specific gravity of 1.280,  fully discharged battery has a specific gravity of 1.12.

d. In alkaline batteries the condition is checked by voltmeter.

e. Tightness of terminals is to be checked.

f. Terminals are to be applied with petroleum jelly to prevent corrosion.

g. Battery should be secured in a wooden tray.

h. All tools used in a battery room should be insulated.

i. Temperature of the electrolyte should not exceed 45 degree Celsius.

j. Vent hole should be kept clean. Clean the battery top to keep dry and clean with baking powder and water solution.

k. Excessive Rapid charging should be avoided.

l. Always top up with distilled water. Battery plates Should always be submerged in electrolyte.

m. At least once in a month the battery should be completely discharge and recharge to increase performance. Check voltage under load and carry out capacity test periodically.

n. Check container for any leak or deformation.