| 摘要 |
<p>A test procedure for the testing liquid storage tanks, for leakage, comprises: immersing at least part of test equipment in the liquid in question and fixing the equipment in position with respect to the tank; allowing a quantity of the liquid in question to be admitted to a multiplier tube, until the level of liquid in the multiplier tube equates to that in the tank; isolating the liquid in the multiplier tube from that in the tank for an appropriate test period; introducing a predetermined measure (M) of liquid of the same nature as that in the tank into the test equipment to establish a recordable datum level removing the predetermined measure (M) of liquid from the test equipment; re-connecting the liquid in the multiplier tube with that in the tank; waiting a prescribed period of time; taking the same measure (M) of liquid and re-introducing this measured amount into the test equipment; and observing any fall of the meniscus of that measure from the previous datum level, which fall would indicate leakage from the tank. The invention also includes test equipment (9). <IMAGE></p> |
