Power blackouts - problem for tube amp & speakers

We have a lot of power blackouts in our area. The power goes and it takes 30 seconds for the generator to take over. Could it damage a tube amp + speakers (plop?) when power goes and comes again ? I am considering an tube amp ( coincident dynamo 34SE ) to replace a battery powered RWA amp. I have to relocate every 4 years in third world countries and would like to avoid any additional weight (a UPS). Greatly appreciated if you could recommend any other lightweight tube amp under 25lb and more than 10W Class A amps.
I would not recommend a tube amplifier to be used in an area with unstable power.
My Jolida power amp (and many other designs) needs to be re-started by hitting the amp power switch if it goes off, and it's happened...only rarely though. Do not be frightened by tube amp risk myths as well designed modern tube amps are pretty damn safe and often have a "warm up" feature (amp is on but needs manual prompting which starts a tube warm up sequence before power gets to the speakers)...many SS amps don't have that "time buffer"...Also, my trusty old power conditioner needs to be re-started after power outages which is a good thing, and it works by turning the power amp on last (after preamp type things get stable) and off first anyway, with zero issues.
If I were in your situation and for peace of mind I'd invest in a power conditioner that offers power regulation and battery backup that could keep your system powered until the generator kicks in. In those types of areas in addition to power outages I'd imagine there is significant power fluctuation as well that can also put significant stress on audio components, and regulation helps stabilize power to your system. APC makes such products though not sure if they're available in other than 120V configurations, but I'm sure you can find something that would work. This might be a little expensive and obviously involves another box to move, but at least for me it'd be worth it just to not worry about one or more expensive audio components being damaged or blown out. Or have power problems limit or dictate what choices I have. Best of luck.
It is a issue a person needs to address but I would not rule out the use of tube electronics if you can properly protect the gear when ac power goes unstable.
Why not simply plug the amp into a surge protection device. You will need to reset the unit after a blackout, but at least it will take your amp out of the circuit when the power comes back on.
With most tube amps its no worries at all.
I use Serge protection when confronted by churlish Italian waiters.
How about a electromagnetic cutoff on the ac that is supplying power to your stereo system; loss of power the electromagnetic drops out and the contacts open and they can not close until manually reset by a person.
I would see this as a bigger problem with a solid state amp, simply because when the power comes back on, it will be possible to thump on account of the preamp.

Most tube amplifiers should take a power outage in stride with no worries- I know ours do!
The controversy is over putting something between the wall and a power amplifier, which most manufacturers will say is detrimental to the amp's
performance (power limiting, extra noise on the line, etc.). I have solid state equipment that has a computer circuit that will ALSO put the components
in standby and have to be MANUALLY reset before i can play music again.
it is very annoying and if the circuit that must sniff the line 24/7 (even when the amps and preamps are not in use) should finally wear out, my precious stereo must be packed up and sent to a repair facility. And therefore, many dollars spent later, i get to listen to my system again.
OTOH, My central Air Cond. and refrigerator also draw a lot of power, but they will rarely break down under similar circumstances. Welcome to high-end audio...
^^ next time that happens and you have to send the amp back, have the manufacturer fix it so you don't have to do that. That's nothing to do with high end audio and everything to do with poor design.
^I think Ralph is right on that one.