Guaging equipment and Cargo Calc

Question 1

What do we want to calculate

Answer 1

Volume and Weight

Question 2

Three types of Guaging

Answer 2

Open, Restricted, Closed

Question 3

Equipment used for restricted method

Answer 3

Calibrated tape, it buzzes when it hits the oil and different sound for any water in tank

Question 4

Why is it called restricted

Answer 4

When vapour lock opened to allow the tape into the tank a small quantity of the tank atmosphere is released through the device.

Question 5

What equipment is used for open

Answer 5

Calibrated sounding tape

Question 6

Disadvantage of Open

Answer 6

The open ullage port exposing tank contents to the open atmosphere:
Should not be used if ship is inerted of carrying tox cargoes

Question 7

Closed

Answer 7

Fixed system

Question 8

Two main types of Closed ullage sounding

Answer 8

Radar (more modern most used), float type - old and mechanical

Question 9

Closed is required for what type of ship

Answer 9

Inerted

Question 10

Sounding

Answer 10

Sounding – measured from the bottom of the tank to the top of the liquid

Question 11

Ullage

Answer 11

from the gauging point to the top of the liquid

Question 12

Is ullaging or sounding more common

Answer 12

Ullaging is more commonly used on tankers except when the tank is almost empty

Question 13

ASTM table 56 does what

Answer 13

converts weight in vacuum to weight in air and vice versa

Question 14

What does UTI stand for

Answer 14

Ullage temperature interface

Question 15

What does UTI do

Answer 15

measures the temperature at the interface between the oil and gas

Question 16

Once we have ullage we can calculate

Answer 16

Observed volume

Question 17

we really want to work out ___ because

Answer 17

Weight because density and volume change with temp

Question 18

What temp to we reference to

Answer 18

15 degrees C

Question 19

ASTM table 54 B gives us

Answer 19

Volume correction factors