157.128—Stripping system.
(a)
Each tank vessel having a COW system under § 157.10(e), § 157.10a(a)(2), or § 157.10c(b)(2) must have a stripping system that is designed to remove crude oil from—
(1)
Each cargo tank at 1.25 times the rate at which all the COW machines that are designed to simultaneously wash the bottom of the tank, are operating; and
(b)
Each cargo tank must be designed to allow the level of crude oil in the tank to be determined by:
(c)
Each stripping system must have at least one of the following devices for stripping oil from each cargo tank:
(d)
There must be a means in the stripping system piping between the device under paragraph (c) of this section and each cargo tank to isolate each tank from the device.
(e)
If the stripping system has a positive displacement pump or a self-priming centrifugal pump, the stripping system must have the following:
(g)
The equipment required under paragraphs (e) and (f) of this section must have indicating devices in the cargo control room or another location that is accepted by the Commandant.