1.2 Corrosion prevention of buried steel structures. Stee structures, such as pi

Question

1.2 Corrosion prevention of buried steel structures. Stee structures, such as piping, that are buried underground are susceptible to corrosion. Engineers have designed tests on the structures that measure the potential for corrosion. In Materials Performance (March 2013), two tests for steel corrosion-called "instant-off" and "instant-on" potential were compared. The tests were applied to buried piping at a petrochemical plant in Turkey. Both the "instant-off" and 1 "instant-on" corrosion measurements were made at each of 19 jective of the study is to determine if one test is more 93 different randomly selected pipe locations. One ob-

Explanation / Answer

(a)

Buried steel pipe

(b)

Sample is 19 different randomly selected pipe locations

(c)

All buried steel pipe

(d)

It is an example of inferential study beucase reasecher want to make decision about population based on test results of sample.

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