[AlexanderHowl]

In general, there is not much you can do about black hopes except stay far away from them. The energy released by the workings of the accretion disk is around 50%, so a 10 Sol-mass black hole surrounded by a 1 Sol-mass accretion disk that will last 1 billion years will release an average of 1,000 times as much energy as Sol, all in hard gamma rays. At 1 AU, that roughly translates to over 100,000 rads per second (if I am doing the math right), meaning that you would need a PF of 10,000,000 to survive for an appreciable amount of time. At 0.1 AU, it is 10 million rads per second. At 0.01 AU, it is 1 billion rads per second.