How much would it cost to fit and maintain every passenger life jacket with personal beacon? About a year ago one sailor showed his fancy life jacket. It included EPIRB or also known as personal beacon.

To date, the smallest personal beacon I managed to find is Fastnet 220, which weights 150 grams and has battery life of 6 years.

Given the scale of airline industry, how much would it cost in installation, maintenance and fuel, to fit each passenger life jacket with such device, excluding the device cost itself?

Edit: Total weight per 200 seat airplane is 30kg. Perhaps someone can translate to fuel/$ per year per whole industry? 

From Thomas Cook PDF, I found that life jackets are audited every 12 weeks and takes up to 40 man-hours per aircraft although they've implemented RFID tags now. 

Regarding points outside the original question scope:

The device cost can also decrease to few dollars if they are manufactured in mass scale. 

Certification is also a factor. Feel free to estimate it as well if you are familiar with the industry.
The extra weight is roughly the weight saved by the introduction of iPads to replace paper. That's apparently saving close to $10K per plane, so you'd expect a similar cost for just flying all those beacons around.

That said, why do you need a full beacon for every vest? If your vests end up scattered over even 10 kilometers distance, you won't have survivors. What you need is a few beacons to locate the plane, and the medium-range active RFID tag on each vest. Such a tag only responds to queries originating nearby. This cuts down dramatically on the battery requirements, as the RFID tag is generally asleep and only woken up by the interrogation signal. Such RFID tags would cost about $20, and weigh a few grams. Battery life is similar (6 years) as that's just chemistry.