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Originally posted by GhostR1der
It appears to crab to the left.]
Originally posted by Aircooled
For Z. This might be of interest. Click some links.
Originally posted by Purplechive
Wonder What Caused This Ripple?
- Purple Chive
Originally posted by LittleBlackEagle
that article you posted Z really pisses me off. i just never fathomed the level of deception tptb would use to avoid having to fix their mess.
After the Fukushima accident, we must no longer use the term “safe” without evaluating actual risk.
Sixty six years ago today, Louis Slotin saw a flash of blue light in the depths of Los Alamos National Laboratory. Seconds before, all that separated the young scientist from a lethal dose of radiation was a thin screwdriver. The screwdriver supported a reflective covering that encased a sphere of plutonium, and if the reflector fell into place, a nuclear chain reaction would commence. When Slotin's hand slipped, a lethal burst of radiation hit him, and he died nine days later.
One year later, the U.S. military detonated this plutonium "demon core" at the Bikini Atoll in the Pacific Ocean. But the legacy of the demon core -- and its victims -- has endured.
When detonating a weapon, however, uncontrolled reactions are optimal. Bomb makers can combine more nuclear material so that the delayed neutrons don't affect the chain reaction. With enough material under the right conditions, an explosion will occur.
But that wasn't the case in the two Los Alamos accidents. After dropping the screwdriver, Slotin separated the radioactive materials, and he has been credited with saving the other people in the room. Although they all were exposed to radiation, no one died of radiation poisoning except for Slotin. The conditions for the two accidents were unsafe enough to emit radiation, but there weren't enough ingredients to blow up the building.
ULTRASONIC EXAMINATION RESULTS IN AN INDICATION ON THE REACTOR PRESSURE VESSEL HEAD PENETRATION
On April 23, 2012, during the Braidwood Station Unit 1 refueling outage, it was determined that the results of planned ultrasonic (UT) examinations performed on one penetration (Penetration No. 69) did not meet the applicable acceptance criteria, requiring repair prior to returning the reactor pressure vessel head to service. A portion of the indication was conservatively assumed to be within the J-groove weld. At the time of the examination, the Braidwood Station Unit 1 reactor pressure vessel head was classified as a low susceptibility head. The cause of the recordable indication is attributed to Primary Water Stress Corrosion Cracking. The examinations were being performed to meet the requirements of 10 CFR 50.55a(g)(6)(ii)(D) and ASME Code Case N-729-1, to ensure the structural integrity of the reactor pressure vessel head pressure boundary. All of the remaining penetrations have been examined during the current refueling outage. Repairs to Penetration No. 69 were completed prior to commencing startup. No other repairs were required. "This is reportable pursuant to 10 CFR 50.72(b)(3)(ii)(A) since the as found indication did not meet the applicable acceptance criteria referenced in ASME Code Case N-729-1 to remain in-service without repair. "The NRC Resident Inspector has been notified." As a result of a follow-up review, at 0600 CDT on 05/18/12, the licensee determined this was an 8 hour reportable event while Unit 1 was in Mode 4. The licensee did not determine this was a reportable event immediately after the UT was conducted on April 23, 2012. The unit is currently in Mode 3. Reactor Vessel Head Penetration No. 69 is a control rod penetration. Reactor Coolant Leakage test are satisfactory and there are no indications of boron buildup on the Reactor Vessel Head. Control rod testing has not yet been performed.
Originally posted by Wertwog
Hello all, long time... thought I would drop in and see how things are going. Seems like a TON of great work has been going on and good to see you all going strong and steady.
“In Washington, you’ve got a situation where the ‘nuclear party’ transcends the Republican and Democratic party,”
Control rod drive mechanism nozzles and other vessel head penetration nozzles welded to the upper reactor vessel head are subject to another phenomenon – primary water stress corrosion cracking. The issue is a potential safety concern because a nozzle with sufficient cracking could break off during operation. This would compromise the integrity of the reactor coolant system pressure boundary – one of three primary barriers that protect the public from exposure to radiation. The break may also result in the ejection of a control rod, which could damage nearby components.
The plant is conducting causal investigations...
"At 1452 CDT on 5/21/2012 with the reactor at 100% power, River Bend Station experienced a reactor scram resulting from an RPS actuation. Following the scram, reactor water level briefly lowered below level 3. The reactor is stable with pressure and temperature being controlled by the feed water system and main steam bypass valves, respectfully. The cause of the scram was due to a turbine trip/low condenser vacuum. The low vacuum condition resulted from a loss of non-safety related 4160V switchgear that powers two of four circulating water pumps. "A suspected spurious Division II isolation of Reactor Core Isolation Cooling (RCIC) was observed. Restoration of RCIC to standby is in progress. "A report of a fire in a manhole was received shortly after the scram . Fire Brigade was dispatched and noted a small active fire in a cable tray. The fire was extinguished with fire extinguishers. Power cables are routed through this manhole. "The plant is conducting causal investigations to fully understand the cause of the turbine trip. As information becomes available, River Bend Station will provide additional information." All rods are inserted, and the plant is in a normal shutdown electrical lineup with the exception of NNS-Switchgear 2A being deenergized. Offsite assistance was not required to extinguish the fire.
Originally posted by sizzlean
reply to post by zworld
Super bugs are created by man breaking leviticus chapter 18 and Sorcery(pharmacy), not the radiation, so lets not read too much into a disaster that is already bad enough. The path has been shown and is clear and that strain was around long before march 11th, but of course if you didn't know that it would seem possible.
Fukushima reactor vessel may be leaking water
Japanese scientists say cooling water may be leaking from a second reactor at the Fukushima Daiichi nuclear plant. They say the water level of the reactor's containment vessel is much shallower than previously thought. Researchers at the government-backed Japan Nuclear Energy Safety Organization analyzed the internal pressure and other data from the No.1 reactor. They say the water in the vessel is about 40 centimeters deep. The plant's operator, Tokyo Electric Power Company, says the water should have a depth of about 2 meters. They say water may be leaking from a hole in a pipe 40 centimeters from the bottom of the vessel. The pipe is connected to the suppression chamber below. The hole is estimated to be 2 centimeters across. The power company says that despite the low water level, the nuclear fuel in the vessel is sufficiently cooled at about 30 degrees Celsius. In March, the utility used an endoscope to find that the water level inside the No.2 reactor had fallen to 60 centimeters. The water leaks at the two reactors could make the task of decommissioning the plant more difficult. The utility plans to fill the containment vessels with water to remove melted fuel. May 22, 2012 - Updated 15:17 UTC (00:17 JST)