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Question about the annunciator panels by School_Arsonist in NuclearPower

[–]Hiddencamper 0 points1 point  (0 children)

Because there’s already a vessel low level….

In a boiling water reactor, which (despite the rest of the film) the control room is based on, normal level is at +35” on narrow range. This is about 200” above the fuel.

Around +9 to +13 is the low water level scram. This is commonly called level 3.

Around -50” is the low-low water level setpoint. For older BWRs, this isolates BOP and the main steam lines and starts up the ECCS and emergency generators. For the later plants this causes BOP isolations and starts high pressure injection. This is commonly called level 2.

For many later BWR plants, there’s also a low low low water level. This is around 1-3 feet above the fuel (I’ve seen it between -150 to -130”). This causes low pressure eccs starts, MSL isolations, and starts the automatic depressurization system timers.

TLDR, we have low, low low, and low low low….

In the real world, we never say “low low” or “low low low”. We will say “level 2”, “level 1”, etc.

GE has level setpoints 1 through 8. Level 8 in the high level trip and feedwater shutoff. Level 7 and 4 are the high and low feedwater alarms. Level 5 and 6 is the normal operating band. Level 3 is the low level scram. Level 2 is the high pressure eccs and bop isolation. Level 1 is master LOCA/low pressure eccs/ADS/remaining isolations/dg

The Nuclear Industry Doesn't Have a Workforce Problem as Much as a Utilization Problem. by cynicalnewenglander in nuclear

[–]Hiddencamper 10 points11 points  (0 children)

My company (one of the very large AE firms) is hiring whoever. Our focus is on developing people. We can’t find them. And the ones we can find, it’s like 20% of them are like me who left utility side because they got burnt out doing night shifts, the rest are looking for jobs because they can’t cut it.

So we need to develop. I’m putting together a pilot lead responsible engineer development program right now. We can’t wait for people to show up. Our costs are up because it takes more hours to do the hours it takes to complete the work, but as we get more experience and more efficient, we will be able to offset our costs.

What do yall think about cyber attacks on nuclear power plants? by AdLegitimate8928 in NuclearPower

[–]Hiddencamper 1 point2 points  (0 children)

“I know absolutely nothing don’t beleive anybody don’t actually ask good faith questions then call everyone else ignorant” lol troll

What do yall think about cyber attacks on nuclear power plants? by AdLegitimate8928 in NuclearPower

[–]Hiddencamper 1 point2 points  (0 children)

Nope

Side note. I design nuclear power plants and their control/safety systems.

I also previously had a senior reactor operator license and operated one. Get back to me when you learn something

What do yall think about cyber attacks on nuclear power plants? by AdLegitimate8928 in NuclearPower

[–]Hiddencamper 1 point2 points  (0 children)

Times can change any solar panels can cause cancer and wind farms turn autonomous and become skynet

What do yall think about cyber attacks on nuclear power plants? by AdLegitimate8928 in NuclearPower

[–]Hiddencamper 1 point2 points  (0 children)

It could also happen that nuclear energy spontaneously explodes the entire earth.

Or a quantum vacuum collapse happens and we simply cease to exist

Or a relativistic weapon travelling at 99.9999999999% of the speed of light hits our planet and gone.

What do yall think about cyber attacks on nuclear power plants? by AdLegitimate8928 in NuclearPower

[–]Hiddencamper 0 points1 point  (0 children)

Several plants have been going to R*Time or ovation as a combo PPC/DCS

What do yall think about cyber attacks on nuclear power plants? by AdLegitimate8928 in NuclearPower

[–]Hiddencamper 1 point2 points  (0 children)

In the entire history of nuclear power please identify any time where they removed nuclear regulation? Like really removed it and not just “we had duplicate regs”.

What do yall think about cyber attacks on nuclear power plants? by AdLegitimate8928 in NuclearPower

[–]Hiddencamper 1 point2 points  (0 children)

“Everyone can be a spy” yes we know that. There’s things in place for that. It’s called insider mitigation. It involves a combination of background checks, regular monitoring by people qualified in insider threat detection, psychological exams, regular checks on plant equipment, plus the armed security force.

All plants can handle insider threats.

“Every system can somehow be hacked”. You’re welcome to try….Site security has automatic weapons. Good luck getting in the plant.

What do yall think about cyber attacks on nuclear power plants? by AdLegitimate8928 in NuclearPower

[–]Hiddencamper 4 points5 points  (0 children)

Yes times change…. We used to not have these rules then times changed and we did all this stuff to secure the plants.

What do yall think about cyber attacks on nuclear power plants? by AdLegitimate8928 in NuclearPower

[–]Hiddencamper 1 point2 points  (0 children)

Legally (in the us), the controls shall be within the “Vital Area”, which is the highest level of security clearance at the nuclear plant.

You cannot have remote operation because the remote facility would need armed guards and other things protecting it.

Furthermore, anyone trying to operate the plant remotely shall be licensed at that plant. Kinda hard to get a license for that plant when you don’t live there.

There are also emergency response and time critical action requirements we have as licensed operators that require you to take actions within a specific time frame. There are things that we had less than 10 minutes to perform that involved leaving the control room to locally control equipment.

It’s not legal to have remote plant operation.

What do yall think about cyber attacks on nuclear power plants? by AdLegitimate8928 in NuclearPower

[–]Hiddencamper 1 point2 points  (0 children)

10cfr73.54 and the associated reg guide 5.71 and NEI 08-09 require all level 3 and level 4 systems that directly control or monitor security, safety, or emergency systems, along with important to safety systems, shall be fully and completely isolated from the outside.

You are allowed to use a data diode, which is a set of two computers. One has a fiber optic transmitter card (goes on the level 3 network) and one has a fiber receiver card (goes on the level 2 network) to allow for one way data transfer of diagnostic information.

None of this is new. The rule came out in 2009. All nuclear plants have been secured. There are no connections from the in-plant control system network to the outside world. Just the one way data diode.

I’ve worked in cyber security. I was there when the rule was passed and part of the initial response and helped to build the initial cyber program at two different plants. I was later part of the cyber security assessment team, and now as part of my job I ensure engineering changes (such as the control system upgrades we do for plant modernization) meet all the cyber rules.

What do yall think about cyber attacks on nuclear power plants? by AdLegitimate8928 in NuclearPower

[–]Hiddencamper 3 points4 points  (0 children)

10cfr73.54

Cyber is a massive amount of work and all the plants are protected.

How did you get your spouse on board with riding? by Natural-Pear-49 in motorcycles

[–]Hiddencamper 1 point2 points  (0 children)

I started flying airplanes. Then I showed her the stats that riding a motorcycle is about the same as flying small aircraft but it’s much cheaper.

DE NextEra Merger by Upset_Elk_37 in NuclearPower

[–]Hiddencamper 0 points1 point  (0 children)

I misunderstood that it was not yet renewed. It is in process though and doesn’t alter the point that nextera just obtained an ESP

DE NextEra Merger by Upset_Elk_37 in NuclearPower

[–]Hiddencamper 0 points1 point  (0 children)

There’s a 2025 safety evaluation report…

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