Is it possible to use Teamspeak as an intercom system for industrial inspections?

We work with inspections of boilers. A team of up to 5 members then need to communicate simultaneously.

The plan is to set up a LAN in the boiler and use a PC as a teamspeak server. Every member in the team is equipped with an Android smartphone and an industrial headset.

The problem is that we normally don't have an internet connection in the boiler.

We now work with industrial intercom systems but are not satisfied. The are both expensive and don't perform well.

Can it work?

Best regards,