| 摘要 |
<P>PROBLEM TO BE SOLVED: To shorten the tank cooling period and to shorten the testing process period. <P>SOLUTION: A plurality of high pressure tanks 2 for a test are prepared, high pressure gas in the high pressure tank 2 whose test is finished, of the plurality of high pressure tanks 2 for the test, is fed into a test waiting high pressure tank 2 undergoing the test after the time point, the pressure of a test finishing high pressure tank 2 balances with that of the test waiting high pressure tank 2, then gas is supplied from a gas accumulator 6 to the test waiting high pressure tank 2 until the pressure reaches a predetermined pressure, and an airtightness test is performed to the test waiting high pressure tank 2 to which the gas is supplied. Remaining gas in the test finishing high pressure tank 2 is recovered by a recovering apparatus 13, and, preferably, the test finishing high pressure tank 2 is replaced with a high pressure tank for a test as a next testing object. <P>COPYRIGHT: (C)2009,JPO&INPIT |
