The layout of the piping using Therminol® heat transfer fluids must be designed to achieve the required normal flow rate by maintaining a permissible pressure drop.
As the system will experience temperature variations, sufficient flexibility to expand and contract thermally is essential. Carbon steel pipes (40) or equivalent must be used throughout the system. The tendency to leak through seals and fittings is a feature of most body fluids, unless these fittings are perfectly adjusted.
The best way to prevent leaks in pipes is to weld all fittings as much as possible. When access is necessary, it is recommended to use non-welded flanges.
To ensure that the recommended spiral seals for Therminol fluid lines are properly installed and sealed, the following instructions must be followed:
Remove rust and dirt from the flange surfaces, remove welding splashes, ensure that the flange faces do not have protruding parts or grooves and are properly aligned, as the joints cannot correct these problems.
Check that bolts and nuts are clean and free of rust and debris, and lubricate the threads. The tightening torque of the bolts is determined by the joint supplier. The torque is also a function of the diameter and thickness of the joint.
The tightening torque is obtained by tightening the opposite nuts/bolts in small successive steps up to the required torque values. Fasten the nuts/bolts in order 9, 3, 6 and 12 hours and repeat the operation with the adjacent nuts/bolts.