New, state-of-the-art header and siphon system
ANDRITZ has a long-standing relationship with Tjiwi Kimia, having supplied the Yankee originally and assisted with the initial start-up of PM 13, as well as providing support ever since. ANDRITZ’s solution in this case was to replace the original header and siphon system with a new, state-of-the-art configuration of the next generation. Reinhard Joebstl explains that “the newly installed system can be used both in sump operation and at higher speeds (i.e. when a condensate ring has already formed). It is also especially robust and benefits from low differential pressure.” The installation took place in September 2021. The plan was to have a local team from ANDRITZ Indonesia install the new system, with two Yankee experts from Graz in Austria flying in to provide supervisory support at the mill. (“The siphon system requires a certain level of knowhow,” points out Erwin Walcher,
Technical Specialist at ANDRITZ.) However, the situation became quite dramatic because of travel restrictions due to COVID-19, just three weeks before the service. This meant the ANDRITZ Yankee experts in Graz had to provide support from Austria instead, with the local ANDRITZ Indonesia team receiving guidance remotely, throughout the installation.
Small timeframe, big impact
Despite the late change of plans, the new header and siphon system were actually installed faster than planned. Reinhard Joebstl argues that “When you go to the OEM supplier, their experience makes the difference. It makes this kind of remote support possible.” The project has also had a big impact on ongoing operations. Reinhard Joebstl explains that “thanks to the improved system design, it’s more flexible, stable, resistant to interruptions and it’s much easier to service. We don’t want to reveal all the details, but if any mill wants to extend the time between services, they can just get in touch and we’ll tell them how we do it.”