Answer
Ans: 5yearly maintenance & inspection
* All activating head should be removed from the cylinder valve & tested for correct functioning by applying full working pressure through the pilot lines
* All cable components should be cleaned & adjusted as necessary and cable connectors should be properly tightened .
* If pneumatic then tubing should be checked for leakage
10 yearly maintenance & inspection
* HP cylinder should be subject to periodical test a interval not exceeding 10 years .
* At 10 year inspection at least 10 % of the total number of provided should be subjected to internal inspection & hydrostatic test.
* If one or more cylinders fails a total of 50 %of the onboard cylinders should be tested.
* If further cylinder fails ,all cylinder should be tested .
* Before the 20 year anniversary& every 10 year anniversary thereafter all cylinder should be subjected to a hydrostatic test.
* Flexible hoses should be replaced at the intervals recommended by manufacturer and not exceeding every 10 years