Info

Pneumatic testing

Pressurizing system with air or other gas; leak rate measurement by change in pressure

Gross

Several hours

No

Tank auditor

Principle of buoyancy

0.00001 in the fill pipe; 0.03 at the center of a 10.5-ft-diameter tank

1.5-3 h

Typically full

Two-tube laser

Measuring level change

Less than 0.05

4-5 ht

No (at existing

interferometer

by laser beam and its

0 0

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