Attachment assembly for secondary containment tanks

Details Attachment assembly for secondary containment tanks Attachment assembly for secondary containment tanks

1987-07-17

1991-10-15

Pollard, Steven M.

Receptacles

Receptacle having flexible, removable inner liner

Means for venting air trapped between the liner and its...

220565, B65D 8700

Patent

active

050566806

ABSTRACT:
A storage tank with secondary containment with a manway for entry into the interior of the tank has an assembly which is dimensioned to fit within the manway. An annular space between the assembly and manway wall is formed which can be monitored for leakage. When secondary containment is provided by a bladder within a rigid tank, the assembly further comprises a flange at its bottom surface and a ring element dimensioned to mate with the lower flange. Securing means hold the bladder between the lower flange and ring element. Secondary containment of the manway is also provided by the assembly.

REFERENCES:
patent: 2336885 (1943-12-01), Pepersack
patent: 2987216 (1961-06-01), Fletcher
patent: 3158459 (1964-11-01), Guilhem
patent: 3319430 (1967-05-01), Small
patent: 3623629 (1971-11-01), Hendershot
patent: 4098425 (1978-07-01), Yamamoto
patent: 4101045 (1978-07-01), Roberts et al.
patent: 4408628 (1983-10-01), Monk
patent: 4552166 (1985-11-01), Chadbourne, Sr. et al.
patent: 4685585 (1987-08-01), Robbins

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