Nuclear Safety Culture at the 2017 NRC Regulatory Information Conference

NRC 2017 RIC

Nuclear Safety Culture (NSC) was assigned one technical session at the 2017 NRC Regulatory Information Conference (RIC).  The topic was maintaining a strong NSC during plant decommissioning.  This post reviews the session presentations and provides our perspective on the topic.

Nuclear Regulatory Commission (NRC)*

The presenter discussed the agency’s expectations that the requirements of the SC Policy Statement will continue to be met during decommissioning, recognizing that plant old-timers may experience issues with trust, commitment and morale while newcomers, often contractors, will need to be trained and managed to meet NSC standards going forward.  The presentation was on-target but contained no new information or insights.

International Atomic Energy Agency (IAEA)**

This presentation covered the IAEA documents that discuss NSC, viz., the General Safety Requirement “Leadership and Management for Safety,” and the Safety Guides “Application of the Management System for Facilities and Activities,” which covers NSC characteristics, and “The Management System for Nuclear Installations,” which covers NSC assessments, plus supporting IAEA Safety Reports and Technical Documents.  There was one slide covering decommissioning issues, none of which was new.

The slides were dense with turgid text; this presentation must have been excruciating to sit through.  The best part was IAEA did not attempt to add any value through some new approach or analysis, which always manages to muck up the delivery of any potentially useful information. 

Kewaunee***

The Kewaunee plant was shut down on May 7, 2013.  The shutdown announcement on Oct. 22, 2012 was traumatic for the staff and they went through several stages of grieving.  Management has worked to maintain transparency and an effective corrective action program, and retain people who can accept changing conditions.  It is a challenge for management to maintain a strong NSC as the plant transitions to long-term SAFSTOR.

It’s not surprising that Kewaunee is making the best of what is undoubtedly an unhappy situation for many of those involved.  The owner, Dominion Resources, has a good reputation in NSC space.

Vermont Yankee****

This plant was shut down on Dec. 29, 2014.  The site continued applying its process to monitor for NSC issues but some concerns still arose (problems in radiation practices, decline in industrial safety performance) that indicated an erosion in standards.  Corrective actions were developed and implemented.  A Site Review Committee provides oversight of NSC.

The going appears a little rougher at Vermont Yankee than Kewaunee.  This is not a surprise given both the plant and its owner (Entergy) have had challenges in maintaining a strong NSC. 

Our Perspective

The session topic reflects a natural life cycle: industrial facilities are built, operate and then close down.  But that doesn’t mean it’s painless to manage through the phase changes. 

In an operating plant, complacency is a major threat.  Complacency opens the door to normalization of deviation and other gremlins that move performance toward the edge of the envelope.  In the decommissioning phase, we believe loss of fear is a major threat.  Loss of fear of dramatic, even catastrophic radiological consequences (because the fuel has been off-loaded and the plant will never operate again) can lead to losing focus, lack of attention to procedural details, short cuts and other behaviors that can have significant negative consequences such as industrial accidents or mishandling of radioactive materials.

In a “Will the last person out please turn off the lights” environment, maintaining everyone’s focus on safety is challenging for people who operated the plant, often spending a large part of their careers there.  The lack of local history is a major reason to transfer work to specialty decommissioning contractors as quickly as possible. 

In 2016, NSC didn’t merit a technical session at the RIC; it was relegated to a tabletop presentation.  As the industry shrinks, we hope NSC doesn’t get downgraded to a wall poster.


*  D. Sieracki, “Safety Culture and Decommissioning,” 2017 RIC (Mar. 15, 2017).

**  A. Orrell, “Safety Culture and the IAEA International Perspectives,” 2017 RIC (Mar. 15, 2017).

***  S. Yeun, “Maintaining a Strong Safety Culture after Shutdown,” 2017 RIC (Mar. 15, 2017).

****  C. Chappell, “Safety Culture in Decommissioning: Vermont Yankee Experience,” 2017 RIC (Mar. 15, 2017).

A Quiet Conclusion to Millstone’s TDAFW Pump Problem

Millstone

On Jan. 15, 2015 we posted about the long time it took Millstone to correctly evaluate and fix a problem with a turbine-driven auxiliary feedwater (TDAFW) pump.  The lengthy problem resolution caught the attention of the plant’s state overseer and the NRC.  We wondered if the event was a harbinger of some slippage in Millstone’s safety culture (SC).

The NRC conducted a supplemental inspection into the pump issue and published their results in late July.*  Because this inspection was conducted using Inspection Procedure 95001, one NRC action was to verify that the licensee’s root cause evaluations appropriately considered SC.  The inspectors’ SC findings, summarized below, are on pp. 7-8 of the report details.

Dominion (Millstone’s owner) identified SC-related weaknesses in three cross-cutting areas:

Problem Identification and Resolution and Human Performance, Conservative Bias

The licensee identified several instances where evaluations of issues or events were not complete, evaluations were less than timely and/or thorough and corrective actions were not sustainable.  In addition, the licensee identified instances of inadequate decision making and bypassing the Corrective Action Program (CAP) program implementation.

The corrective action in both areas was to make changes in the organizational behavior through station leadership stand downs and by improving the scheduling of daily CAP related meetings to ensure adequate engagement in the processing and review of CAP products.

Human Performance, Procedure Adherence

The licensee identified instances where corrective actions were not completed as written. Dominion’s corrective actions include CAP group reviews for specified corrective action assignments, implementing a Corrective Action Review Board coordinator and restricting manager level functions in the central reporting system to department managers.

Overall, the inspectors determined that Dominion’s root cause, extent of condition, and extent of cause evaluations appropriately considered SC components.

Our Perspective

The SC fixes are from the everyday menu: more management involvement, better oversight and improved organizational practices.  The report also mentioned additional traditional fixes (upgraded procedures, more training and the development of relevant case studies) applied to other aspects of how and how well the plant investigated its handling of the pump problem.  Taken together, they are concrete, if not exactly momentous, actions to improve a vital organizational process, i.e., the CAP.  In addition, the fixes are consistent with the plant's position that the TDAFW pump problem was a localized issue.

We would like to see a more systemic investigation of SC-related factors but the actions taken reflect an acceptable SC and reinforce our perception that Dominion (unlike Millstone’s former owner) takes safety seriously.


*  R.R. McKinley (NRC) to D.A. Heacock (Dominion), “Millstone Power Station Unit 3 – NRC Supplemental Inspection Report 05000423/2015010 and Assessment Follow-Up Letter” (July 22, 2015).  ADAMS ML15202A473.

Back to the Past at Millstone?

Millstone

A recent article* in the Hartford Courant newspaper reported on a turbine-driven auxiliary feedwater (TDAFW) pump problem at Millstone 3 that took so long to resolve that the NRC issued a White finding to plant owner Dominion Resources.

The article included a quote from the Connecticut Nuclear Energy Advisory Council (NEAC) describing their unease over the pump problem.  We dug a little deeper on the NEAC, a state government entity that works with public agencies and plant operators to ensure public health and safety.  Their 2014 annual report** highlights the TDAFW pump problem and another significant event at Millstone, a loss of site power that caused a dual reactor trip.  NRC inspections following these two events resulted in one Severity Level III finding, the White finding previously mentioned and two Green findings.  The events and NRC findings led the NEAC to express “great concern regarding the downward performance trend” to Dominion and request a formal response from Millstone management on any root cause that linked the performance problems.

In his response to the NEAC, the Millstone site VP said there was no root cause linking events.  He also said two safety culture (SC) improvement areas had been identified, viz., problem identification and evaluation and establishing clarity around decision making, and that the site has implemented improvement actions to address those areas.  In the Courant article, a plant spokesman is quoted as saying "If it's not immediately obvious why it's not working, we put a team to work on it."

The article also referred to related behind-the-scenes NRC staff emails*** in which the time it took for Dominion to identify and address the TDAFW pump issue raised eyebrows at the NRC.

So what does the TDAFW pump event tell us about SC at Millstone?

Our Perspective

Is Millstone on the road to the bad old days, when SC was AWOL from the site?  We hope not.  And there is some evidence that suggests the TDAFW pump issue was an isolated problem exacerbated by a bit of bad luck (a vendor supplying the wrong part with the same part number as the correct part).

Positive data includes the following: Millstone 2 and 3 both had all green performance indicators on the 3QTR2014 NRC ROP and, more importantly, a mid-2014 baseline inspection of the Millstone CAP “concluded that Dominion was generally effective in identifying, evaluating, and resolving problems.”****  In addition, plant “staff expressed a willingness to use the corrective action program to identify plant issues and deficiencies and stated that they were willing to raise safety issues.” (p. 10)

Currently, M2 is subject to baseline inspection and M3 to baseline and a supplemental inspection because of the White finding.

To us, this doesn’t look like a plant on the road to SC hell although we agree with the NRC that the TDAFW pump problem took too long to evaluate and resolve.

We hope the Millstone organization learned more from the TDAFW pump problem than they displayed in their reply to the NRC.*****  In dealing with the regulator, Millstone naturally tried to bound the problem and their response: they pointed at the vendor for sending them the wrong part, implemented a TDAFW pump troubleshooting guide, revised a troubleshooting procedure, and produced and presented two case studies to applicable plant personnel. 

The site VP’s letter to NEAC suggests a broader application of the lessons learned.  We suggest the “trust but verify” principle for dealing with vendors be strengthened and that someone be assigned to read Constance Perin’s Shouldering Risk (see our Sept. 12, 2011 review) and report back on the ways factors such as accepted logics, organizational power relations and production pressure can prevent organizations from correctly perceiving problems that are right in front of them.

*  S. Singer, “Emails Show NRC's Concern Over How Millstone Nuclear Plant Reacted To Malfunction,” Hartford Courant (Jan. 12, 2015).

**  2014 Nuclear Energy Advisory Council (NEAC) Report (Dec. 11, 2014).  The Nov. 10, 2014 letter from Millstone site VP S.E. Scace to J.W. Sheehan (NEAC) is appended to NEAC’s 2014 annual report.

***  The Associated Press obtained the emails under a Freedom of Information Act request.  Most of the content relates to the evolution of technical issues but, as cited in the Courant article, there are mentions of Millstone’s slowness in dealing with the pump issue.  The emails are available at ADAMS ML14358A318 and ML14358A320.

****  “Millstone Power Station – NRC Problem Identification and Resolution Inspection Report 05000336/2014009 and 05000423/2014009” (Sept. 12, 2014), cover letter.  ADAMS ML14255A229.

*****  Dominion Nuclear Connecticut, Inc. Millstone Power Station Unit 3, Reply to a Notice of Violation (Nov. 19, 2014).  ADAMS ML14325A060.