TNAG-1508-FCO40-2066-Guangdong-nuclear-power-station-project-at-Daya-Bay-safety-c-1987 — Page 103

FCO40 Hong Kong Department Records 聯邦事務部香港部檔案 All

designing. Besides, tracer atoms can also monitor the

leakage of fluids as well as the material's tear, wear and

corrosion, etc. Therefore, the tracer atom can bring about

abundant economic benefits.

Take the development of an oil field for example.

Whether

or not an oil field can achieve a long-term steady and high

yield and can enjoy a rational exploitation depends chiefly

on the command of reliable data about the water-absorbing

capacity and change of each layer of the water-injection well.

The application of tracer atoms (radioactive isotopes iodine-

131 or barium-131) can discover the water-absorbing capacity

of each layer of the well, thus providing basis for taking

corresponding sealing or blocking measures.

Further more, the underground oil-conveying pipeline often

suffers from incidents of oil-leakage due to pipe perforated

by corrosion. This not only causes direct economic loss,

but also brings about pollution to the environments and damage

to farmland. The tracer atom ( iodine-131 or bromine-82) can

directly enter the oil pipe along with the oil, and can

accurately locate the leakage point buried deep under the

ground. This method is simple and easy handling, and can

save large quantities of man power, material resources and

time (the conventional check method involves digging in large

area), therefore the economic benefits are very obvious.

Similar principle may also apply to gas-conveying pipeline.

In steel industry, the tracer atoms can be used to monitor

the corrosion of the furnace lining of the shaft furnace, as

the over-corrosion of the said furnace lining may lead to

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