초록 ▼

Vent filters for containers such as barrels which contain hazardous waste, such as transuranic (nuclear) waste, include a bore therethrough which does not intersect the material of carbon-to-carbon filter media inserts disposed within the vent filter. Each of the bores has a stainless steel tube dis

Vent filters for containers such as barrels which contain hazardous waste, such as transuranic (nuclear) waste, include a bore therethrough which does not intersect the material of carbon-to-carbon filter media inserts disposed within the vent filter. Each of the bores has a stainless steel tube disposed therein wherein the stainless steel tube has at an interior end a septa-type seal and at an outer end an impenetrable plug. In order to sample head gases, a syringe is used with a needle that penetrates the septa-type seal. After the needle is withdrawn, the septa-type seal closes and the impenetrable plug is replaced.

대표청구항 ▼

1. An arrangement for sampling head space gas in a container having materials therein which include or generate head space gas which is vented continuously to the atmosphere, the arrangement comprising: a vent insert having a housing with a filter element therein, the filter element being disposed w

1. An arrangement for sampling head space gas in a container having materials therein which include or generate head space gas which is vented continuously to the atmosphere, the arrangement comprising: a vent insert having a housing with a filter element therein, the filter element being disposed within a first portion of a housing and being continuously in open communication with the container and in open communication with the atmosphere for filtering continuously head space gas as the head space gas vents to the atmosphere, the housing having a second portion which does not include the filter element; a bore through the second portion, the bore being adapted to receive a probe therethrough for withdrawing a sample of head space gas, and a seal disposed in the bore.