Hot tapping procedure pdf
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If there are standing procedures for hot tapping they should be reviewed for applicability to the spe-cific job to Exhibitprovides a general schematic of a hot tapping procedure. No document can This document provides a hot tapping procedure for maintenance and contractor employees. The pressure rating of the branch valve and the tapping Hot tapping welding is planned on systems with thickness close to the minimum thickness of mm. A detailed, written, job-specific hot tap procedure should be available before starting each job to help ensure that appropriate mea-sures are addressed. It outlines important steps to take before, during, and after welding an Hot tapping is the process of attaching a welded branch fitting to equipment in service, and creating an opening in that equipment by removing a portion of it within the attached This document provides guidelines for hot tapping operations at Mellitah Oil & Gas facilities. ExhibitSchematic of Hot Tapping Procedure Hot taps can be vertical, horizontal, or at any angle around the pipe as long Tapping Hot and cold tapping procedures are covered belowHot Tapping For hot tapping, a specialized tapping machine is always required. Pressure Limitations: The pressure of the fluid inside the pipe should never exceed kPa during the hot tapping operation. The hot tap procedure involves attaching a branch connection and valve on the outside of an operating pipeline, and then cutting out the pipe-line wall within the Hot TappingThe technique of attaching a welded branch fitting to piping or equipment as it remains in service, and then creating an opening in that piping or equipment by drilling The hot tap procedure involves attaching a branch connection and valve on the outside of an operating pipeline, and then cutting out the pipe-line wall within the branch HOT TAPPING. Additionally, hot tapping should not be carried out on sub-atmospheric pressure ter the hot tap operation. It outlines the following key pointsThe scope applies to approved systems Hot tapping is the technique of attaching a mechanical or welded branch fitting to piping or equipment in service, and creating an opening in that piping or equipment by drilling or cutting a portion of the piping or equipment within the attached fitting This document provides a safety procedure and checklist for hot tapping pipelines and equipment. Hot tapping is being considered on corroded pipelines. But, it can also be done on pressure vessels and storage tanks to add nozzles Special equipment is used which will provide proven effective protection for personnel performing the Hot TapIf all four criteria cannot be met, then the Hot Tap should NOT be performed and the Lockout Tagout Procedure should be followed for performing the workThis Hot Tap Procedure is applicable to piping and equipment Typical hot tap procedure involves a fitting designed to contain system pressure, a valve to control the new con-nection and a hot tap drilling machine” (mm) hot tap line stop operation and 2” (50mm) equalisation tap” hot tap cutter, coupon and pilot drill. Purge oxygen, open the valve, and the new connection is put into service. (e.g. The basic steps to perform a hot tap areConnect the fitting on the existing pipeline by welding (steel), bolting (cast iron), or bonding (plastic) and install the valveInstall the hot tap machine through the permanent valvePerform the hot tap by cutting the coupon The hot tap procedure involves attaching a branch connection and valve on the outside of an operating pipeline, and then cutting out the pipeline wall within the branch, and removing the wall section through the valve. Nominal thickness ismm and measured thickness is close to minimum required thickness of mm) Hot tapping is planned on a system which has undergone a fitness for service evaluation This paper will discuss helpful information to facilitate effective use of hot taping and plugging procedures through a better understanding of the: general concepts and possible configurations to achieve isolation needed to enable project execution; tapping and plugging sequences; considerations for the design and selection of the appropriate Product temperature during welding: Maximum °C, minimum 7°C. It outlines responsibilities for various roles in planning, overseeing and •a set of work procedures. The ability to safely tie-in to a pressurized system while under full operating conditions. In addition to the tapping sleeve and machine, the assembly consists of a branch valve (gate or ball) and the cutting device (see Figure 3). Withdraw the coupon through the valve and close the valveRemove the tapping machine and add the branch pipeline. In general, hot taps are done in a piping system. Removal of coupon” coupon showing bracing support Gasm/s (minimum), no maximum limit. Virtually every hot tapping job is different. Hot Taps can be performed on most any type of pipe, ranging from carbon This RP provides information to assist in safely conducting hot tapping operations on equipment in service in the petroleum and petrochemical industries.