What are the prohibitions with respect to strikes and lock outs on a person employed in a public utility service, in breach of contract?

The Industrial Disputes Act, 1947 -Section 22. Prohibition of strikes and lock-outs- (1) No person employed in a public utility service shall go on strike in breach of contract-- (a) without giving to the employer notice of strike, as hereinafter provided, within six weeks before striking; or (b) within fourteen days of giving such notice; or (c) before the expiry of the date of strike specified in any such notice as aforesaid; or (d) during the pendency of any conciliation proceedings before a conciliation officer and seven days after the conclusion of such proceedings.