[Global] Nano-fiber filtration

[R.VanHoorebeck at dominionenergy.com]

Here at Surry we are trying to reduce our overall CRE.  I'm interested in plants that may be using nano-fiber filters in their RCS letdown.

Does your plant use nano-fiber technology in your RCS letdown?

If yes, do your filters DP out more frequently or do you see filters reaching dose rate limits more quickly?

If you changed from micron filtration to nano-fiber, did you seen a reduction in your overall GA dose rates?

If you have evaluated the use of nano-fiber filters and decided not to use them, I'd be interested in why your plant decided against them.

Any additional info would be much appreciated.

Thanks so much!

Doug VanHoorebeck
ALARA Supervisor
Surry Power Station
W: 757-365-2642
C: 757-617-4191
r.vanhoorebeck at dominionenergy.com<mailto:r.vanhoorebeck at dominionenergy.com>

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