Testimony
of George H. Baker
Professor
Emeritus, James Madison University
Before
the
House
Committee on National Security and the
House
Subcommittee on the Interior of the House Committee on Oversight and
Government
Reform
Joint
Hearing on “The EMP Threat: The State of Preparedness against the
Threat of an
Electromagnetic
Pulse (EMP) Event”
May
13, 2015
Key
Findings from the EMP Commission Report of 2008
The
Commission to Assess the threat to the United States from
Electromagnetic Pulse, on which I served as principal staff, made a
compelling case for protecting critical infrastructure against the
nuclear electromagnetic pulse (EMP) and geomagnetic disturbances
(GMD) caused by severe solar storms. Their 2008 Critical
Infrastructure Report explains EMP effects, consequences, and
protection means for critical infrastructure sectors. EMP and GMD are
particularly challenging in that they interfere with electrical power
and electronic data, control, transmission, and communication systems
organic to nearly all critical infrastructures. The affected
geography may be continental in scale. EMP and GMD events thus
represent a class of high-consequence disasters that is unique in its
coverage, ubiquity, and simultaneous system debilitation. Such
disasters deserve particular attention with regard to preparedness
and recovery since assistance from non-affected regions of the nation
could be scarce or nonexistent. The major point I want to make to
Congress is that such disasters are preventable. We have the
engineering know-how and tools to protect ourselves. What is lacking
is resolve.
Brief
Tutorial on EMP and GMD Phenomenology
A
brief tutorial on EMP and GMD phenomenology will be helpful to the
discussion. The nuclear electromagnetic pulse (EMP) results from a
nuclear burst high above the jet stream. A similar effect can occur
naturally when an intense wave of charged particles from the sun
perturbs the earth’s magnetic field, causing a solar storm GMD.
In
the case of high altitude nuclear bursts, two main EMP types come
into play that I will refer to as the “fast pulse” and the “slow
pulse.” The fast pulse EMP field, also referred to as E1, is
created by gamma ray interaction with stratospheric air molecules. It
peaks at tens of kilovolts per meter in a few nanoseconds, and lasts
for a few hundred nanoseconds. The broad-band frequency content of E1
(0-1000 megahertz) enables it to couple to electrical and electronic
systems in general, regardless of the length of their penetrating
cables and antenna lines. Induced currents range into the 1,000s of
amperes. Exposed
1
The
“slow pulse” EMP, also referred to as E3, is caused by the
distortion of the earth’s magnetic field lines due to the expanding
nuclear fireball and rising of heated and ionized layers of the
ionosphere. The change of the magnetic field at the earth’s surface
induces currents of hundreds to thousands of amperes in long
conducting lines (with lengths of a few kilometers or greater) that
damage components of the electric power grid itself as well as
powered systems. Long-line communication systems are also affected,
including copper as well as fiber-optic lines with repeaters.
Transoceanic cables are a prime example of the latter.
Solar
storm GMD effects are the result of large excursions in the flux
levels of charged particles from the Sun and their interactions with
the Earth’s magnetic field. The electrojets from these storms,
depending on their orientation, generate overvoltages in long-line
systems over large regions of the earth’s surface affecting
electric power and communication transmission networks in a similar
fashion to EMP/E3. Note that protecting long-line systems against EMP
(E1 and E3) also affords protection against GMD effects. The converse
is not true. Protecting electric transmission systems against solar
storm GMD/E3 does protect against EMP/E3 –but defending against the
fast pulse EMP/E1requires different equipment.
A
summary of the nuclear and solar environments of concern is provided
in the table below.
2
Long-line
connected equipment is especially vulnerable to EMP and GMD
Similar
to protecting critical infrastructure against any hazard, it will be
important to develop risk-based priority approach for the solar GMD
and nuclear EMP threats, recognizing that it will be fiscally
impracticable to protect everything. Because electromagnetic threat
environments are measured in volts per meter, a given system’s
vulnerability increases with the length of its connecting lines.
Because the electric power grid and long-haul communications network
(including telephone and Internet) deliver services on long-lines,
these infrastructures are the most vulnerable to EMP and GMD. It is
ironic that the infrastructures most vulnerable to EMP and GMD are
arguably the most critical to society, not only for day-to-day
enterprise and life support, but also for recovery were disasters to
occur.
Since
a simple measure of risk is the multiplicative product of
vulnerability and criticality, the electric power and the long-haul
telecommunications networks sit at the top of the risk ranking
hierarchy. Thus, attention to the electric power grid and long-haul
communications infrastructures would bring major benefits to national
resiliency. Of these two, the electric power grid is the arguably the
most important – all other infrastructures ride on the electric
power system. And the grid is the most essential infrastructure for
sustaining population life-support services. And the electric power
system operation is brittle and binary, and fails fast and hard. Some
essential heavy-duty electric power grid components take months to
replace – or years if large numbers are damaged. A primary example
is high voltage transformers which are known to irreparably fail
during major solar storms and are thus likely to fail during an EMP
event. Protection of these large transformers will buy valuable time
in restoring the grid and the lifeline services it enables. By
contrast, communications networks are more malleable due to their
technological diversity and the relative ease of component
replacement and repair.
DoD
has adopted protective priorities using commercial protective
equipment
We
have much to learn from the Department of Defense (DoD) experience in
prioritizing and protecting systems since the 1960s. The DoD has
prioritized and has protected selected systems against EMP (and, by
similitude to E3, GMD effects). DoD places emphasis on protecting its
strategic triad and associated command, control, communications,
computer, and intelligence (C4I)
systems.
Although
DoD has been successful in protecting its high priority systems
dating back to the Minuteman system procurement in the 1960s, our
civilian enterprise remain unprotected. In my experience, the lack of
progress in protecting civilian infrastructures to EMP and GMD is due
to three main factors:
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-
Stakeholders are reluctant to act.
-
No single organization is the designated executive agent.
I
shall address these factors in order.
-
EMP/GMD Misconceptions.
There
are many misconceptions about EMP and GMD that are circulating among
both technical and policy experts, in press reports, on preparedness
websites, and even embedded in technical journals. Because many
aspects of the EMP and GMD generation and system interaction physics
are non-intuitive, misconceptions are inevitable. Uneasiness about
the wide-area, ubiquitous effects of EMP and the diversity of systems
affected make it convenient to adopt misconceptions that avoid the
need for action. Denying the seriousness of the effect appears
perfectly responsible to many stakeholder groups. Misconceptions
involving consequence minimization or hyperbole have served to deter
action in the past. Downplaying the threats places EMP/GMD
preparedness on the back-burner compared to other effects.
Exaggeration of the threats causes policy-makers to dismiss
arguments, ascribing them to tin foil hat conspiracy theories.
I
will address what are perhaps the most harmful misconceptions, viz:
-
Nuclear EMP will burn out every exposed electronic system.
-
Alternatively, EMP/GMD effects will be very limited and only result in “nuisance” effects in critical infrastructure systems.
-
Megaton class weapons are needed to cause any serious EMP effects – low yield, “entry-level” weapons will not cause serious EMP effects.
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To protect our critical national infrastructure against EMP and GMD would cost a large fraction of the GNP
Misconception
A: Nuclear EMP will burn out every exposed electronic system.
Based
on DoD and Congressional EMP Commission’s EMP test data bases we
know that smaller, self-contained systems that are not connected to
long-lines tend not to be affected by EMP fields. Examples of such
systems include vehicles, hand-held radios, and disconnected portable
generators. If there is an effect on these systems, it is more often
temporary upset rather than component burnout.
On
the other hand, threat-level EMP testing also reveals that systems
connected to long lines are highly vulnerable to component damage,
necessitating repair or replacement. Because the strength of EMP
fields is measured in volts per meter, to first order, the longer
4
the
line, the more EMP energy will be coupled into the system and the
higher the probability of EMP damage. Because of their organic long
lines, the electrical power grid network and long-haul landline
communication systems are almost certain to experience component
damage when exposed to EMP with cascading effects to most other
(dependent) infrastructure systems.
Misconception
B: EMP effects will be very limited and cause only easily recoverable
“nuisance” type effects in critical infrastructure systems.
Although
EMP does not affect every system, widespread failure of limited
numbers of systems will cause large-scale cascading failures of
critical infrastructure systems and system networks because of the
interdependencies among the failed subsystems and the interlinked
electrical/electronic systems not directly affected by the EMP.
Paul
Erdos’ “small world” network theory applies to EMP failure
analysis.1
The graph above illustrates that the
average fraction of nodes in any network that are connected to
any
single network node changes suddenly when the average number of links
per node
exceeds
one. For example, a failed node, where the average links per node is
2, can affect ~ 50% of the remaining network nodes.
Moreover,
for many systems, especially computer controlled machinery and
unmanned systems, upset is tantamount to permanent damage – and may
cause permanent damage including structural damage in some cases, to
systems due to interruption of control. Examples include:
Upset
of generator controls in electric power plants
Upset
of robotic machine process controllers in manufacturing plants
Lockup (and need for reboot) of long-haul communication repeaters
Upset of remote pipeline pressure control SCADA system
1
Duncan
Watts,
Six
Degrees: The Science of the Connected Age,
2004.
5
Misconception
C: Megaton-class nuclear weapons are required to cause serious EMP
effects. “Entry-level,” kiloton-class weapons will not produce
serious effects.
Due
to a limiting atmospheric saturation effect in the EMP generation
process, low yield weapons produce peak E1 fields of the same order
of magnitude as large yield weapons if they are detonated at
altitudes in the 50-80 km range. The advantage of high yield weapons
is that their field on the ground is attenuated less significantly at
larger heights of burst (that expose larger areas of the Earth’s
surface.
The
first graph above illustrates that nominal weapons with yields
ranging from 3 kilotons to 3 megatons (a 3 order of magnitude
difference in yield), exhibit a range of peak E1 fields on the ground
with only a factor of 3 difference, i.e. 15kV/meter vs. 50 kV/meter.
Although E3 fields vs. yield and height of burst are not illustrated
above, a 30 kiloton nuclear weapon detonated above 100 km can cause
magnetic field disturbances as large as solar superstorms, although
over smaller regions.
The
second graph above indicates that megavolt levels and
kiloampere-level currents are induced in long overhead lines by E1
from kiloton-class weapons, such as those that might be produced by
an emerging nuclear power.
Misconception
D: to protect our critical national infrastructure against EMP and
GMD would cost a large fraction of the U.S. Gross National Product.
Among
the critical infrastructure sectors, EMP risk is highest for electric
power grid and telecommunication grids – attention to these
infrastructures alone
would bring major benefits to national resiliency and enhance
deterrent effects. These infrastructures are the most vulnerable due
to their organic long lines. And they are also the most critical to
the operation and recovery of the other critical infrastructure
sectors. As mentioned
6
previously,
if we have to pick one infrastructure to protect, the top choice
would be the electric power grid.
The
Foundation for Resilient Societies, a non-profit organization on
which I serve as a member of the Board of Directors, has developed a
comprehensive cost estimate for grid protection that includes costs
for protecting the grid and the portions of other sectors required
for grid operation, viz. fuel supply and communication. Resiliency of
the electric grid depends upon concurrent protection of key
telecommunications, Class 1 railroad systems that transport coal to
generation plants, and interstate natural gas pipeline systems. The
combined costs, summarized here, are in the range of $30 Billion.
The
costs to protect roughly the transmission and distribution system and
half of the U.S. generation capacity are provided in the table below:
Resilient
Societies Cost Projections
Electric
Generation Plants
|
$23,0000M
|
Electricity
Transmission & Distribution
|
$2,300M
|
Electric
Grid Control Centers
|
$1,390.M
|
Telecommunications
|
$1,480M
|
Natural
Gas System
|
$640M
|
Railroads
|
$1,380M
|
Blackstart
Plant Resiliency
|
$80M
|
|
$30,270M
|
Using
the $30,270 bottom line EMP and GMD protection cost estimate and a
levelized annual revenue requirement of 20% ($6B), assuming there are
~150 million rate payers in the United States, the estimated annual
cost per rate payer would be $3.30 per month.
There
are strong arguments for protecting selected subsets of the grid. For
example, a top priority to ensure situational awareness following a
GMD or EMP event would be to protect major grid control centers.
Estimates to protect these are in the $1.4 billion ballpark. If a
Phase 1 EMP/GMD program operated in 2016-2020 at a five year cost of
$1.4 billion, or $280 million per year, and all the extra costs were
passed through to retail customers, the extra cost would be
approximately $0.16 per electric customer per month.
We
also might put priority on ensuring the survivability of major grid
components that would take months to replace –or years if large
numbers suffer damage. A primary example would be high voltage
transformers which are known to irreparably fail during major solar
storms and are thus also vulnerable to failure during an EMP event.
Protection of these large transformers would save valuable time in
restoring the grid and the life-support services it enables. The unit
cost for HV transformer protection is estimated to be
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$350,000.
The total number of susceptible units range from 300 – 3000
(further assessment is required to establish an exact number.) Doing
the math, the protected cost for protecting 3000 of these longest
replacement lead-time components of the grid is $ 1 billion – a
small fraction of the value of losses (Lloyds of London estimates are
in the trillions of dollars2
for GMD alone) and long-term recovery costs should they fail.
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Stakeholder Reluctance.
Concern
about costs and liabilities makes stakeholders in government and the
private sector reluctant to admit vulnerabilities. A major impediment
to action on protecting the grid against GMD and EMP effects has been
that government and industry are (understandably) swayed by the
familiar, the convenient, and the bottom line. Like it or not,
familiarity and profitability are the touchstones of acceptability –
strategic advantage goes to the convenient. Thus, the tendency exists
to downplay the likelihood of EMP and GMD and their associated
consequences. The prevalent misconceptions (factor 1) have also
contributed to stakeholders’ ability to downplay the seriousness of
EMP and GMD effects to avoid action.
In
cases where stakeholders have decided to take action to improve
infrastructure survivability, the actions have been limited and
ineffective. A primary case in point is the NERC effort to set
reliability standards for wide-area electromagnetic effects.
Responding to FERC’s inquiries for protection standards, the NERC
formed a GMD task force. When several task force participants asked
why EMP could not be part of the task force deliberations, NERC
leadership explained that EMP was a national defense concern and
therefore not their responsibility – rather that DoD should take
the lead.
The
standards ultimately developed by NERC include a set of operational
procedures requiring no physical protection of the electric grid and
a scientifically-flawed benchmark GMD threat description that enables
most U.S. utilities to avert installing physical protection based on
their own paper modeling studies. The benchmark GMD threat
description is based on solar storm statistics over the last 25 years
during which there were no “Carrington Class” 100-year solar
superstorms. The Carrington-class storm GMD levels are an order of
magnitude higher than the largest storms in the NERC 25 year data
window. NERC’s benchmark event is admissible only if we assume that
all eleven-year solar cycles are the same, an assumption known to be
incorrect. A skeptic might suspect that the NERC standard’s main
objective was to avert liability rather than protect the public from
serious GMD consequences.
-
Space Weather: It’s Impact on Earth and Implications for Business, Lloyds of London, 2010. In this report Lloyds advocates development of robust systems designed to operate through space weather events.
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The
outcome of the NERC operational procedures standard, now approved by
FERC, is that the public will not be protected from EMP and the
industry will deal with GMD effects using operational work-around
procedures such as shedding load and spinning up reserve generation
capacity.
The
operational procedure-based solutions that have been offered by NERC
in their recently adopted EOP-010-01-1 standard are ineffective for a
number of reasons. A non-exhaustive list of ten pitfalls accompanying
reliance on operational procedures to protect the electric power grid
follows.
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GMD operating procedures are based on the premise that operators can and will prevent large-scale grid collapse by shedding load. Due to insurance rules, grid operators will be reluctant to shed load to customers, even though load-shedding procedures reduce the probability of grid collapse and damage to EHV transformers. Utility companies know that if customer electric power is lost due to geomagnetic disturbance (GMD), they will not be liable for losses; but if customer power is lost due to intentional human action to de-energize the grid or portions of it, power companies can be held liable. (Reference the Lloyds of London report on GMD effects and liabilities and statements by insurance company representatives at 2012 Electric Infrastructure Security Summit at UK Parliament).
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The 15-45 minute warning time earlier provided by the Advanced Composition Explorer (ACE) satellite and now supported by the Deep Space Climate Observatory (DSCOVR) successor will be inadequate for grid operators to confer while executing required operational procedures. Participants in the 2011 National Defense University-Johns Hopkins University GMD response exercise indicated that they would be hard-pressed even to get all the players to the table within such a short time interval. And, once hit, the grid would fail quickly. We note that, in 1989, during a moderate solar storm GMD, the electric power grid of the entire Province of Quebec went dark in 92 seconds. The August 2003 Northeast Blackout evolved much more slowly (1:31pm – 4:10pm) with much more time available to take action. Nonetheless, even with a span of hours available, power companies were unable to react fast enough to prevent grid collapse.
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Grid operators will not have adequate information on the state of the grid to implement correct operational procedures. Because most of the grid is not monitored for Geomagnetically Induced Currents (GIC), operators will be “flying blind” with respect to the state of the grid. Operators will not know which portions need remedial action and what actions will be optimal. Information gaps will exist as in August 2003 – where operators were unaware of the initiating tree contact. Sensors needed to monitor GMD/EMP stressors on critical grid components were not required by NERC standards and have not
9
been
installed. And this lack of visibility has led and will lead to
errors in executing operational procedures.
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There is no control center with large enough visibility to control operational procedure response on a national scale. Lack of information on neighboring interconnections impairs proper procedural response. A national control/coordination center does not exist. And in the Eastern Interconnection, there is no single authority over the nine American regional Reliability Coordinators. Because the geographic coverage of solar storm GMD and nuclear EMP can be continental in scale, super-regional control visibility and authority are necessary. At this point, only the federal government, using Presidential authority, can fulfill this role.
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Operational procedures have not been adequate to address the much simpler causes of previous large-scale blackouts. For instance, operational procedures proved ineffective in preventing the 2003 Northeast blackout that was precipitated by a single failure point – tree contact with a transmission line. Recent grid models indicate that GMD and EMP will cause hundreds to thousands of failure points. The complexity and rapidity of grid failure during a Carrington-class event will overwhelm the ability of electric utilities to respond and to prevent grid failure using any suite of operational procedures, no matter how well-conceived and practiced. During Hurricane Sandy, grid physical damage outstripped the effectiveness of procedural protection efforts. Physical damage to grid components will be a factor in GMD/EMP events as well.
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Unforeseen grid equipment malfunctions have greatly impaired grid operators’ ability to respond during major blackouts in the past. Operational procedures during the 2003 Northeast blackout were greatly impaired by computer control system malfunctions and software problems. Critical grid state monitoring, logging and alarm equipment failed. The control area’s SCADA and emergency management systems malfunctioned. The shut-down of hundreds of generators over multiple states was unanticipated as was the failure of tens of transmission lines. Confusion and inoperative control systems led to many frantic phone calls. As these events, show, any early failure of major grid components caused by the GMD or EMP environment will impede implementation of subsequent operational procedures.
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EMP and GMD will affect the communication systems necessary for coordination of operational procedures. Long-line internet and telecommunications networks will experience large overvoltages from GMD and EMP E1/E3 environments, likely causing their debilitation. GMD and EMP also impede signal propagation of HF/VHF/UHF radio systems and GPS systems. Thus grid communication and control systems necessary to execute operational procedures cannot be relied on – just when they will be needed the most.
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It is not possible to anticipate all grid failure point combinations and time sequences during GMD/EMP events in order to adequately plan, exercise, and test GMD/EMP operational procedures. Normal grid failures are not indicative of GMD/EMP failures. Operators are familiar with commonly occurring single equipment failures but when multiple points fail near simultaneously under GMD/EMP stress, and the failures interact and cascade, operators will have difficulty understanding and responding to prevent further damage.
In
most complex human-machine systems, the interactions literally cannot
be seen.
Prof.
Charles Perrow of Yale defines ‘normal accidents’ in complex
infrastructure systems as involving system interactions that are not
only unexpected, but are incomprehensible for some critical period of
time. For example, it took an expert NERC investigation team three
months to determine the exact combination and sequence of system
failures that led to the 2003 Northeast blackout.
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In the Eastern Interconnection, Regional Transmission Organizations (RTOs) and Independent System Operators (ISO’s) don’t have cross-jurisdictional authority to enforce shutdown of neighboring grids, sometimes required to avoid large scale blackouts, as in the August 2003 Northeast Blackout. There is no overall supervisor for the Eastern Interconnection. During the 2003 Northeast blackout, First Energy was asked to shed load by its neighboring grid operators but First Energy declined. According to the NERC after-action report, load shedding would have prevented the ensuing Northeast blackout.
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Draft NERC GMD operational procedures recently approved by FERC (Order No. 797, June 2014) are not comprehensive and not specific. The plans generator operators and load balancing authorities from mitigation responsibilities. The NERC operational procedures also exempt portions of the grid operating below 200kV. In the August 2003 blackout, failure of 125 kV lines played a major role in the collapse of the Northeast grid.
The
GMD operational procedures and solar storm benchmark event approved
by FERC are ineffective and allow the electric power industry to
continue with no significant upgrades to their physical assets,
leaving the grid vulnerable to 100 year solar superstorms and EMP. It
is worth noting that while GMD fields are more intense at northern
latitudes, E3 fields increase at more southerly latitudes relative to
the locus of a high altitude EMP event. Utilities that require no
protection against GMD because of their southerly latitude under the
newly operative standard would be experience higher E3 fields in the
event of an EMP event than their northerly counterparts. The
bifurcated “stove-pipe” threat approach being pursued to protect
the electric power grid is cost- and outcome-ineffective. We need to
develop a unified, all-threat approach to this challenge which leads
to the third and final impediment to progress:
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To
a major extent, the lack of progress in protecting our most critical
infrastructure to EMP and GMD is that the responsibility is
distributed. There is no single point of responsibility to develop
and implement a national protection plan. Nobody is in charge. When I
asked the North American Electrical Reliability Corporation about EMP
protection, they informed me, “we don’t do EMP, that’s a
Department of Defense problem.” The Department of Defense tells me,
“EMP protection of the civilian infrastructure is a DHS
responsibility.” DHS explained to me that the responsibility for
the electric power grid protection is within DOE since they are the
designated Sector Specific Agency (SSA) for the energy
infrastructure.
EMP
protection has become a finger pointing, “ring around the rosey,”
duck-and-cover game. Our bureaucracy has enabled gaps for addressing
the difficult problems of EMP and GMD, resulting in no substantive
action to protect the nation. We have the classic Washington problem
of issues that span departments or fall between departments, which
we’re all very familiar with, but then we add to that the
involvement of the private sector, without central leadership, we’re
foundering. Because these catastrophes can be continental in scale
with everyone in trouble, and there’s nobody left to help, the
ultimate solution, by default, has fallen to the state and local
levels. States are entitled to protect the safety, reliability and
adequacy” of their electric grids, but most states expect the
federal government to provide leadership in protecting the bulk power
system. Local level preparedness is crucial, but we still need
federal top down guidance to achieve a uniform, coordinated approach
to the problem – to be able to triage, to standardize protection
methods across the states and localities. We know, and I’ve
stressed, that we can’t protect everything. Uniform guidance is
needed to determine what needs to be protected and assign
responsibilities. Local jurisdictions need top-level guidance and
information to understand what to do.
The
current state of EMP protection is random, disoriented and
uncoordinated. As we go forward, I suggest that Congress establish a
responsible party or agency to be the central whip for EMP
preparedness. That would change the landscape materially and make
progress possible.
Recommendations
for Future Progress.
We
must come to grips as a nation with the EMP/GMD preparedness
challenges. The consequences of these threats are preventable. The
good news is that the engineering
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tools
are available to protect a meaningful set of high-priority
infrastructures.3
There are a number of initiatives that would greatly aid in this
endeavor.
First,
a designated national executive agency and director is needed. DHS
and DoD are likely candidates. Of these, DoD has the most experience.
The first order of business should be a national EMP/GMD protection
plan and a set of national planning scenarios.
Second,
let us begin a national program to protect the electric power grid,
including essential supporting infrastructures used for fuel supply
and communication.
Third,
Congress should address problems inherent in the regulation of
electric reliability as conceived in the Energy Policy Act of 2005.
Establishing a new independent commission solely focused on electric
grid reliability would be helpful – a commission with the power to
issue and enforce regulations, similar to the Nuclear Regulatory
Commission. The present FERC-NERC arrangement has proven ineffective
with respect to EMP/GMD preparedness.
___________________________________________________________________________________________________
Thank
you for the opportunity to share my perspective on EMP and GMD issues
and solutions.
Respectfully
Submitted,
George
H. Baker
Professor
Emeritus
James
Madison University
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The Electric Infrastructure Security Council has recently published an Electric Infrastructure Protection Handbook and Mil-STD-188-125 provides guidance for protecting communication and data systems.
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