Sealing plug assemblies, sealing elements, and bleed lances for line stopping a pipe and a systems and methods thereof

A method of stopping a pipe containing a product, comprising:

• providing a sealing plug assembly connected to a sealing plug housing, wherein the sealing plug assembly includes a plugging head, a proximal sealing element, a distal sealing element, an isolation plate, and a nose piece,
• wherein the proximal sealing element is located closer to the plugging head than the distal sealing element, and wherein proximal sealing element protrudes around an exterior of the sealing plug assembly,
• wherein the distal sealing element is located closer to the nose piece than the proximal sealing element, and wherein the distal sealing element protrudes around the exterior of the sealing plug assembly, and
• wherein the isolation plate is contained in an interior of the sealing plug assembly and located between the proximal sealing element and the distal sealing element;
• and
• sealing the pipe containing the product by sealing the outer edge of the proximal sealing element and the outer edge of the distal sealing element against an interior surface of the pipe.

A system for stopping a pipe containing a liquid, gas, or slurry product, the system comprising:

• a plugging head, a proximal sealing element, a distal sealing element, an isolation plate, and a nose piece,
• wherein the proximal sealing element is located closer to the plugging head than the distal sealing element, and wherein proximal sealing element protrudes around an exterior of the sealing plug assembly,
• wherein the distal sealing element is located closer to the nose piece than the proximal sealing element, and wherein the distal sealing element protrudes around the exterior of the sealing plug assembly, and
• wherein the isolation plate is contained in an interior of the sealing plug assembly and located between the proximal sealing element and the distal sealing element,
• wherein the nose piece has a product port located on the exterior of the sealing plug assembly and the product port is connected to the isolation plate by a nose flow pathway;
• and
• a bleed lance, wherein the bleed lance includes a stab inlet, a body, and a bleed lance exit, wherein the body includes a hollow pipe or tube, and the body is connected to the stab inlet and the bleed lance exit by a lance flow pathway, and
• wherein the product port of the nose piece is configured to or has a product port surface that is complimentary to the stab inlet of a bleed lance, and the product port is configured to be opened or closed by insertion and rotation of the stab inlet of the bleed lance.