401.73—Cleaning tanks—hazardous cargo vessels.
Cleaning and gas freeing of tanks shall not take place:
(a)
In a canal or a lock;
(b)
In an area that is not clear of other vessels or structures; and
(c)
Before gas freeing and tank cleaning has been reported to the nearest Seaway station.
Code of Federal Regulations
[55 FR 48599, Nov. 21, 1990]