Issue description:

When I broke a block of my fully formed Turbine that was being monitored by an RFTools' RF Power Monitor the server got locked into a crash loop.

Steps to reproduce:

1. Form a Turbine
2. Use RFtool's power monitor on turbine valve
3. Break a block of the turbine

Version (make sure you are on the latest version before reporting):

Minecraft: 1.11.2
Forge: 2388
Mekanism: 9.3.2.307
RFTools: 6.10

If a (crash)log is relevant for this issue, link it here: (It's almost always relevant)

crash-2017-07-10_15.51.58-server.txt

Thank you for your detailed report, traced down the crash :)
I'll open a pull request in a moment!