A tie-in in piping refers to the process of connecting new piping to existing piping. This can be done to extend the existing piping system, add branches to it, or connect it to other equipment. Whenever there is a need for plant expansion or operation changes in an existing plant, Piping tie-ins are unavoidable.

Tie-in Definition: The process of connecting a new line or branch to existing line by means of cutting and welding new T shaped pipe spool with a valve on the hydrocarbon process line is called as a tie-in of pipelines.

Feb 3, 2014 · The next step is to prepare the Method Statement which comprises of P&IDs, isometric drawings, SIS, procedures [isolation, depressurization, draining, cleaning, tie-in execution (important: determine min. pipe wall thickness at tie-in weld areas), hydrotest, leak testing] and job safety analysis.

Jul 25, 2023 · In piping, a tie-in is when new piping is connected to existing piping. This is done to extend the current system, add branches, or connect it to other equipment. The process can vary depending on the type of piping and its location, and it requires careful planning and execution to ensure safety and effectiveness.

Jun 8, 2010 · A tie-in point is a location on an existing plant where a new installation is to connect to. Until such time as new installation is built and ready for testing the tie-in points will be unused. It is common to specify the fluid properties avaliable at the tie-in points for the use of the future installation equipment's designers.

Mar 11, 2010 · Working in an EPC company as a process engineer, i would like to know what are the key information a process engineer must provide to Piping Design in a Tie-In list and why? I also would like to know the basic steps for planning, designing and constructing such Tie-In's in a Revamp project?

The document discusses procedures for piping tie-ins. It begins by asking clarifying questions about the reader's specific project details and definitions. It then provides a 25 step planning process for tie-ins, including identifying locations, reviewing with stakeholders, field verification, and drawing/documentation.

The tie-in point is shown in the P&ID and in the isometrics, however, it is important to have a Tie-in Point List in order to make easier plant interface management among design, construction and operation team.

A piping tie-in refers to connecting new piping to existing piping. There are different types of tie-ins depending on the piping material and connection method. A tie-in schedule outlines the plan for tie-in points, including location, equipment, and timeline to ensure new and existing piping are integrated seamlessly.

What is the line size and wall schedule of the tie-In? What is the commodity normally in the line? How far to the closest valves up stream and downstream of the Tie-in Point? Can the upstream and downstream piping be drained and steamed out? Tie-In Planning. 1. Identify each Tie-In (s) schematic location on P&ID - Process Engineer 2.