S&W Using Cetrifuge

Question 1

Maximum allowable S&W for crude in the GOM?

Answer 1

1%

Question 2

Maximum allowable S&W for crude in the Western Region?

Answer 2

3%

Question 3

Minimum temperature to preheat centrifuge in the GOM?

Answer 3

140 deg. F +/- 5

Question 4

Minimum temperature to preheat centrifuge in the Western Region?

Answer 4

160 deg. F +/- 5

Question 5

What is the minimum centrifugal force a sample tube must have in a centrifuge.

Answer 5

A force of 500 at the tip of the tube.

Question 6

What is the maximum variation in temperature the sample tube can have after spinning?

Answer 6

15 deg. F

Question 7

What are the requirements of a sample tube?

Answer 7

Shall be 200 part (100 mL) cone shaped and 6-8 inches in length. Must be NIST traceable and volumetrically or gravimetrically certified.

Question 8

What is the minimum graduation degree a thermometer must have?

Answer 8

2 degrees or less.

Question 9

When thermometer is compared to a working thermometer what is the maximum difference in deg. F allowed?

Answer 9

1 deg. F

Question 10

When do you heat the sample tube?

Answer 10

Before and after heating.

Question 11

How many times should you invert the sample tube?

Answer 11

A minimum of 10 times.

Question 12

How long should you spin the sample?

Answer 12

A minimum of 5 minutes.

Question 13

If the S&W content is less than 0.025% what should the volume be recorded as?

Answer 13

0%

Question 14

What is the maximum difference allowable between two sample tubes?

Answer 14

One subdivision.

Question 15

How many decimal places should you report from a sample tube.

Answer 15

Three decimal places.