Induction Heating
- Status:
- Complete
- Project Reference Number:
- NIA_NGGT0113
- START DATE:
- END DATE:
Project summary
- Funding mechanism:
-
- Network Innovation Allowance
- Research area:
-
- GT - Safety and emergency
- Expenditure:
- £93,600
- Third Party Collaborators:
-
- Rapid Heat Systems
Summary
Documents
Gas flame heating with oxy-propane is the most commonly used methods of applying preheat during in-service welding. Propane by itself does not give a hot enough flame for heating of high pressure gas pipelines, but can be used on low pressure pipelines/pipework. Gas flame heating is relatively cheap in terms of equipment needed, and it is versatile for site use.The disadvantages are:
- The welder has to stop working whilst heat is being applied.& bull; There are increased safety considerations due to the naked flame being used in close proximity to other personnel (i.e. welders and inspectors).
- Possible overheating may occur which leads to the integrity of the pipe will be comprised and the pipe must be replaced.
- Replacing an overheated pipe can cost in the region of £500,000.
Benefits
To maintain preheat using induction heating for in-service hot tap welding and include it into business as usual.
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