Temperature ranges for hot taps were extended recently to 1350°F (from 1200°F) when the company's personnel successfully tapped a horizontal vessel with an uncontrolled flow of hydrocarbons.
The high temperature tap was completed through a 3/4in outside shell of carbon steel, 4in of refractory lining, a 1/2in stainless steel shell, and 3/4in of hex mesh abrasion-resistant material inside the stainless steel.
Additionally, successful HiStops have been completed on two 6in boiler feedwater lines in seperate plants. One line was flowing 1650 gpm (22 ft/sec) at 2100 psig and 400°F; the other was at 2300 psig and 350°F.
Team engineers can extend HiStop temperatures to 1200°F, and the hot tap pressures to 4300 psig (296 BAR) if needed.
Isolation procedures and service options include:
<%=company%>, P.O. Box 123, Alvin, TX 77512-0123, Tel: 800-662-8326