Comments:Explosion sinks Indian Navy submarine
This page is for commentary on the news. If you wish to point out a problem in the article (e.g. factual error, etc), please use its regular collaboration page instead. Comments on this page do not need to adhere to the Neutral Point of View policy. Please remain on topic and avoid offensive or inflammatory comments where possible. Try thought-provoking, insightful, or controversial. Civil discussion and polite sparring make our comments pages a fun and friendly place. Please think of this when posting.
Use the "Start a new discussion" button just below to start a new discussion. If the button isn't there, wait a few seconds and click this link: Refresh.
Contents
Thread title | Replies | Last modified |
---|---|---|
Hydrogen evolution during charging of the batteries. | 0 | 15:37, 28 February 2014 |
During charging of the batteries, Hydrogen at the cathode and oxygen at the anode evolve. This is due to the inefficiency of the charging. This inefficiency increases with the age of the batteries. The older the battery, more is this inefficiency and more Hydrogen and oxygen evolve during the charging operation. In normal conditions, the evolved gases escape into the atmosphere whereas in the case of submarines, there is no escape of these gases. When the hydrogen concentration in the attmosphere prevalent within the submarine reaches a threshold value, there is a possibility of explaosion which is triggered by a spark. The spark can be from anywhere within that area like even rubbing of two metal parts. Hence one should be careful in using these batteries like discarding the old batteries, continously monitoring the Hydrogen concentration in the atmosphere, not charging the batteries to the full charge etc. Since the properties of the batteries differ from manufacturer to manufacturer, certain critical parameters have to be determined before use. Dr.S.Lakshminarayanan Retd. Director, Power Supply Systems DRDL / RCI (DRDO), Hyderabad