Upstream pipe plug

An upstream pipe plug for insertion into a pipe, comprising:

• a first bulkhead having an outer circumference and a first side and a second side;
• a second bulkhead having a first side and a second side that is spaced apart from the first bulkhead;
• an inflatable bladder disposed on the outer circumference of the first bulkhead;
• a vent pipe engaged to the second bulkhead;
• and
• an insertion pipe engaged to the second bulkhead.

A method of sealing a broken pipe, comprising:

• providing an upstream pipe plug comprising a first bulkhead, a second bulkhead, a vent pipe engaged to the second bulkhead, and an insertion pipe engaged to the second bulkhead;
• inserting the first bulkhead into the pipe;
• inserting the second bulkhead into the pipe, such that the first bulkhead and second bulkhead are in a spaced apart arrangement, including a space between the first bulkhead and the second bulkhead;
• moving the first bulkhead and the second bulkhead within the pipe, such that the space between the first bulkhead and second bulkhead is located near the break in the pipe and the first bulkhead and the second bulkhead are disposed on either side of the break;
• inserting concrete through the insertion pipe within the space between the first bulkhead and the second bulkhead;
• and
• exhausting air contained within the space between the first bulkhead and the second bulkhead through the vent pipe as the concrete is inserted through the insertion tube.