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PROS 2015 Summer Meeting

2015 PROS Meeting will be in Texas.

A NASA tour is planned. You will love the Gulf Coast. Plan your meeting now, and have some fun too.

Read page two. News continues, don't stop on page one.

EIGHT MEMBER STATES URGE EC TO RECOGNISE SIGNIFICANT ROLE OF NUCLEAR IN EU ENERGY UNION

FORATOM welcomes the initiative of eight EU Energy Ministers (from Romania, France, the Czech Republic, Lithuania, Poland, Slovakia, Slovenia and the UK) to send a letter to the European Commission (EC)'s Vice President for Energy Union, Maros Sefcovic, and the Climate and Energy Commissioner, Arias Canete, to urge them to take into account the important role of nuclear in the Communication on an "Energy Union" to be published on 25 February.

Grand Gulf: Request to convert Regulatory Commitments for Time Critical Operator Actions listed in.letter GNRO-2015/00003, "Response to Item 25 Request for Additional Information Regarding Maximum Extended Load Line Limit Plus Amendment Request a Lic

By Bob Meyer

Here is a NRC request for additional information that has to do with extensive training of operators for time critical actions. Currently the GGNS Operating License has 39 conditions. Entergy proposes to add a new condition listing the time critical operator actions training and reporting required for the MELLLA+ LAR.

Proposed License Condition

Time Critical OperatorAction Commitments made as required for the MELLLA+

LAR will be converted to a License Condition as follows:

Prior to Operation in the MELLLA+ Domain, Entergy will:

Train all active operating crews to perform the following three MELLLA+ time-critical operator actions:

1. Initiate Reactor Water Level Reduction (90 seconds following failure to scram concurrent with no reactor recirculation pumps in service and CTP > 50/0).

2. Initiate Standby Liquid Control Injection (300 seconds ifCTP > 5% or before Suppression Pool Temperature reaches 110 degrees F).

3. Initiate Residual Heat Removal Suppression Pool Cooling (660 seconds).

GGNS will validate that all active operating crews have met the time requirements for the three MELLLA+ time-critical operator actions during evaluated scenarios.

GGNS will report any MELLLA+ time-critical actions that are converted to "immediate actions" to the NRC Project Manager.

The following are one-time actions which expire after the first report:

Vogtle Electric Generating Plant, Units 1 & 2: Response to Preliminary White Finding from NRC Inspection Report

By Bob Meyer

Southern company sent a response to the NRC for the White finding for an event in which a High Integrity Container (HI C) containing a Type B quantity of radioactive waste was erroneously loaded into a Type A shipping cask and transported to a waste processor. 

Southern Nuclear Operating Company (SNC) agreed with the NRC on the facts regarding the finding in the letter. SNC understands the importance of safely shipping radioactive materials in accordance with regulatory requirements and has taken for the identified condition. 

All of the corrective actions are listed in the report below. Oral boards, coaching on use of Fundamentals, FASAs, the list is comprehensive. There are lessons learned in this that can be used in many other departments as well.

Here is Southern's response to the NRC White Finding...

Fort Calhoun Station LER: Plant Trip Due to Moisture Intrusion into a Transformer Control Cabinet

On December 17, 2014, at 1014 Central Standard Time (CST), the Fort Calhoun Station (FCS) reactor tripped due to a loss of load signal from the main turbine. The loss of load signal actuates the reactor protective system (RPS) which tripped the plant. The trip of the turbine was caused by a spurious actuation of a relay on the station unit auxiliary transformer that normally provides power to 4160 VAC bus 1A2.

The root cause was that FCS had not ensured that an identified single point vulnerability for T1A-2 transformer was eliminated or had an adequate mitigating strategy.

The control cabinet sealing was improved to reduce moisture from the interior of the cabinet. The relay that caused the trip was removed from the trip circuit. The station will modify the control circuits to eliminate the single point vulnerability in the transformer control cabinets.

BACKGROUND

Fort Calhoun Station (FCS) is a two-loop reactor coolant system of Combustion Engineering design.

EVENT DESCRIPTION

Turkey Point Unit 4: Automatic Auxiliary Feedwater System Actuation during a Planned Reactor Trip

By Bob Meyer

This event is not uncommon in the industry. Turkey Point determined that just-in-time training did not prepare the crew adequately for this event. The follow-up corrective actions incude the development of simulator scenarios that more closely model the plant response during a planned shutdown and train the Operators to reduce the probability of an unneccessary AFW actuation during a planned reactor trip. Consider these lessons learned for application at your facility.

Here is the entire LER...

NORTH ANNA: AUTOMATIC REACTOR TRIP DUE TO FEEDWATER REGULATING VALVE FAILING CLOSED

On February 26, 2015, at 1511 EST, with Unit 1 operating at 95% power in an end of cycle coastdown, the 'B' Main Feedwater Reg Valve failed closed which resulted in a Unit 1 automatic reactor trip due to 'B' Steam Generator low/low level. The operations crew entered the reactor trip procedure and stabilized Unit 1 in Mode 3 at normal operating pressure and temperature. All control rods fully inserted into the core following the reactor trip. This reactor protection system actuation is reportable per 10CFR50.72(b)(2)(iv)(B). The Auxiliary Feedwater pumps actuated as designed as a result of the reactor trip and provided makeup flow to the steam generators. The automatic start of the Auxiliary Feedwater system is reportable per 10CFR50.72(b)(3)(iv)(A) for the valid actuation of an ESF system. The Auxiliary Feedwater pumps were subsequently secured and returned to automatic. Decay heat is being removed by the condenser steam dump system.

Nuclear plant operations: unlocking the human factor

analog

Nuclear energy must evolve to secure its future, but how does change affect the performance of plant operators? A new DOE-funded project at Vanderbilt University aims to find out. Principal investigator Dr Matthew Weinger and team member Dr. Julie Adams discuss this multi-disciplinary study and the importance of human factors research in high-risk environments like nuclear power plants.

At a time when nuclear energy could be playing a significantly larger role in decarbonising the world's energy mix, the nuclear industry finds itself with something of an image problem.

IAEA Completes Nuclear Security Review Mission in Japan

Tokyo, Japan - A team of International Atomic Energy Agency (IAEA) experts today completed a mission to review national nuclear security practices in Japan.

Starting 16 February, the IAEA conducted a two-week International Physical Protection Advisory Service (IPPAS) mission at the request of Japan’s Nuclear Regulation Authority (NRA). The mission reviewed the nation's nuclear security regime as well as the security setup at nuclear facilities.

Norwegian scientist says decaying Russian subs threaten 'Chernobyl in slow motion'

The monument to the firemen who died after the explosion

The Chernobyl monument to the firemen who died after the explosion Photo: NEIL BYRNE

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