Jeff Stallman 
Member since Dec 27, 2017


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Re: “Safe, clean, and reliable

To rightword2:

Ellie Ripley in no way misleads the public in her statements, she is just more aware and sensitive to those that may not fully understand all of the technical jargon in the public post. But since you are unnecessarily concerned, Yes there is some (very few items) equipment located at the intake below the 85 elevation that the plant uses for safe operation and safe shutdown. All components of this nature however are protected against failure. The best example is the ASW pumps; these pumps, used for emergency cooling, are located below the 85 elevation in a sealed room. The room is water tight below 85 elevation and has snorkels to prevent suffocation of the pumps; snorkels extend above the 85 elevation and are qualified to withstand seismic, wind and tornado borne missiles. And there are multiple pumps for redundancy and there are other sources of water in extreme situations that are gravity fed.



And to answer to tsunami question, while everyone (yourself included) is heading for higher ground inland, designated plant employees would be headed toward their posts at the plant to ensure safe operation of the plant through the storm. The Fukushima tsunami would have hit our shores 46 BELOW the cliff top (39 tsunami at Fukushima Daiichi). Prior to the tsunami the plant would have already been in the process of shutting down temporarily (dues to predetermined seismic motions or operator response based on USGS reports) to ride out the event. The plant would then be fully inspected by civil engineers and plant operators to ensure the plant is safe for continued operation.

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Posted by Jeff Stallman on 12/27/2017 at 9:11 AM

Re: “Safe, clean, and reliable

To rightword2:

You suggest that Diablo Canyon is outmoded and no longer as efficient as plants in other countries; and yes Diablo is not the 2018 version or even the 2015 model but last I checked dates of construction or production are independent of safety standards. I dont know how much money you waste each month on the latest and greatest but I see plenty of perfectly good vehicles on the road that are 10-20 years old, running fine and satisfy all modern safety requirements. The NRC, and other expert groups, regularly inspect and report on the health and safety of all nuclear plants in the country (and even some abroad) and do not tolerate plants which perform in unsafe manners.



You mention that it is uneconomic to continue to maintain an older, already constructed and efficiently run plant when brand new plants with the latest technology could be installed. This may be true if you were not in California and playing in Sim City where things can be does in a timely manner and at a reasonable cost. Diablo will be fully paid off in 2024/2025 meaning all that would need to be paid for is relicensing (was 70-80 % complete and paid for before the announcement) and continued maintenance. Is more efficient to keep using your paid off 2000 model car or continuously buying this years model before the previous car is paid off?



Your comment about the intake system, clogging and catastrophic tidal risks is ignorant at best. Personnel at DCPP are well aware of the changing tides and marine (plant and organism) influxes and have appropriately designed/practiced mitigation techniques for these concerns. A bubble curtain is installed during high salp conditions to safely bring the organisms up to the natural current at the water surface which takes the salp safely away from the intake suction. Divers are regularly utilized to reduce kelp and other potential debris to prevent clogging. In certain storm seasons the plant even reduces power to mitigate the ocean storm effects.

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Posted by Jeff Stallman on 12/27/2017 at 9:10 AM

Re: “Safe, clean, and reliable

To rightword2:

First off, PG&E has experienced geotechnical and seismic engineers that ensure that the plant is more than adequately designed to withstand any credible earthquake event; discovered before or after construction began. PG&E even halted its own license approval from the NRC until they were able to redesign portions of the plant to withstand the previously undocumented fault line. Additionally, the land around Diablo and associated fault lines are likely some of the most studied and well understood seismic features in California; thanks to extensive investigations and modeling by PG&E. This understanding would be even greater, however, Environmental Activist groups (who argue that more geologic seismic modeling should performed) will not allow Diablo to use cutting edge technology to further map the nearby faults.



It just goes to show that false accusations and misrepresented comments such as your own are meant solely to deceive the public that may not have the full story; or even part of it.

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Posted by Jeff Stallman on 12/27/2017 at 9:09 AM

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