Testable termination fitting

A conduit system comprising:

• a conduit defined by a primary pipe positioned within a secondary pipe and the conduit having an interstitial space defined between the primary pipe and secondary pipe, the primary pipe having an inner diameter and the secondary pipe having an outer diameter;
• a termination fitting assembly comprising:
• an interior fitting positioned at least partially within the primary pipe, the interior fitting having an inner wall and an outer wall defining a gap between the inner wall and the outer wall, and a corner wall forming an intersection between the inner wall and the outer wall;
• an exterior fitting extending about the secondary pipe, and
• wherein a distance between the inner diameter of the primary pipe and the outer diameter of the secondary pipe is less than a distance between the inner wall and the outer wall.

A method of testing an interstitial space of a double-walled conduit, the interstitial space defined as the space between a primary pipe and a secondary pipe of the double-walled conduit, the double-walled conduit defining a longitudinal passageway, the method comprising:

• positioning a compression ring circumferentially around the double-walled conduit;
• positioning a seal circumferentially around the double-walled conduit and directly adjacent the compression ring;
• inserting an interior fitting at least partially into the longitudinal passageway of the double-walled conduit;
• and
• securing an exterior fitting circumferentially around double-walled conduit, such that a portion of the exterior fitting engages with at least a portion of the interior fitting and urges the compression ring to axially displace toward the seal, such that the seal creates sealed engagement between the interior fitting and the conduit;
• wherein the exterior fitting is composed of a first and second exterior fitting, and securing the exterior fitting comprises:
• positioning the first exterior fitting on a first side of the double-walled conduit,
• positioning the second exterior fitting on a second side of the double-walled conduit,
• engaging the first and second exterior fitting portions through compressing the portions against the double-walled conduit until openings of the first and second exterior fitting portions abut one another;
• and
• securing the first and second exterior portions together with at least one bolt.

A method of testing an interstitial space of a double-walled conduit, the interstitial space defined as the space between a primary pipe and a secondary pipe of the double-walled conduit, the double-walled conduit defining a longitudinal passageway, the method comprising:

• positioning a compression ring circumferentially around the double-walled conduit;
• positioning a seal circumferentially around the double-walled conduit and directly adjacent the compression ring;
• inserting an interior fitting at least partially into the longitudinal passageway of the double-walled conduit;
• and
• securing an exterior fitting circumferentially around double-walled conduit, such that a portion of the exterior fitting engages with at least a portion of the interior fitting and urges the compression ring to axially displace toward the seal, such that the seal creates sealed engagement between the interior fitting and the conduit;
• wherein an annular channel extends between an inner wall and an outer wall of the interior fitting;
• wherein the annular channel is positioned for fluid communication with the interstitial space;
• and
• wherein the method further comprises monitoring the annular channel for detecting fluid, gas, and pressure levels in the interstitial space.

A termination fitting assembly for use with a conduit, the conduit comprising a primary pipe positioned centrally within a secondary pipe along a longitudinal axis of the conduit, the conduit having an interstitial space defined between the primary pipe and secondary pipe, the termination fitting assembly comprising:

• an interior fitting having an inner wall and an outer wall, the inner wall sized and shaped for insertion into and sealing with the primary pipe, and the outer wall extending circumferentially around the secondary pipe of the conduit,
• an annular channel defined between the inner wall and the outer wall of the interior fitting and in fluid communication with the interstitial space of the conduit;
• an exterior fitting positioned around the conduit;
• and
• a compression ring and an annular seal positioned about the secondary pipe, the annular seal is compressed against the outer wall of the interior fitting at a junction and the annular channel terminates at the junction.