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INPRO ASSESSMENT OF
INDONESIA'S FUEL FABRICATION FACILITY
IN AREA OF SAFETY
IAEA INPRO TM to Review the Updating of the INPRO Methodology
15-17 November 2016, Vienna, Austria
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Why NESA?
Targeting assessment of NES for both NPP and fuel cycle facilities
Aiming to support Indonesia’s nuclear power program, addressing
sustainability aspect and enhance awareness of long term
commitment to nuclear power, and identifying potential regional /
international arrangement
NESA already contributed to strategic planning 2015-2019
What has been done …
• Training of NESA (2011)
• NESA for one large LWR (2012-2014). Report submitted in 2015.
• NESA for one SMR (2015). Limited scope (Economics and
Infrastructure). Report on going
• Roadmap of Indonesia”s nuclear fuel cycle
• NESA for Fuel Cycle Facilities (2012- onward)
NESA OF INDONESIA
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The experience …
• Targeting at assessment of mining and milling, conversion, enrichment, fuel fabrication, interim spent fuel storage, and final disposal facilities,
• No sufficient data on planned facilities: (i) Planned fuel fabrication at basic design stage; (ii) Pilot fuel fabrication in Indonesia does not match that for the assessed large NPP
• Difficulty to seek data of reference fuel cycle facilities, e.g. safety assessment report (SAR)
Assessment of Nuclear Fuel Cycle Facilities:
Indonesia’s Experience
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Change of direction …
Develop database for reference LWR-related nuclear fuel cycle
facilities, i.e. technical data and services
Limited assessment of existing pilot facilities in Indonesia (Limited
assessment is focused on economics, waste management,
environment and safety; general overview for others areas)
Develop fuel cycle roadmap showing national nuclear energy
policies, possible scenarios to achieve the targets, milestones of
nuclear fuel cycle facilities development, assessment of
sustainability of the scenarios based on the INPRO Methodology,
and identification of necessity for R&D as well as pursuance of
regional / multilateral collaboration
Assessment of Nuclear Fuel Cycle Facilities:
Indonesia’s Experience
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Assessment of Nuclear Fuel Cycle Facilities:
Indonesia’s Experience
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NES #1: Large Reactor LR1 + NFCF
2012 2013 2014 2015 2016
Limited scope NESA for
SMR1 (Eco, Inf)
Fuel scope NESA for LR1
(Eco, Inf, WM, PR, PP, Env, Safety)
Pre- NESA for PWR NFCF/ Database
•Full scope NESA for LR1-based NFCF
NES #2: SMR1 + NFCF
NES #3: SMR2 (RDE) + NFCF
Fuel Cycle Roadmap Rev 0
Limited NESA for existing NFCF
Supporting National Program
•NESA for fuel fabrication facility
•Full scope NESA for SMR1
•Revised Fuel Cycle Roadmap as necessary
NESA for
SMR2 (RDE)
Fuel Cycle Roadmap
Rev 1
NESA Programme in Indonesia
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Assessment of Nuclear Fuel Cycle Facilities
Safety Assessment
of Fuel Fabrication
Facility
DATABASE for
reference fuel cycle
facilities
Limited Assessment of
Existing Nuclear Fuel
Cycle Pilot Facilities
Development of Fuel
Cycle Roadmap
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Reference Facilities
(1) Open Source: Columbia
Fuel Fabrication Facility, US
• Design capacity: 1500 t U/y
• Started production in 1969,
renewed license for 20-year
since 2007
(2) Site Visit: JSC
Mashinostroitelny Zavod Fuel
Production Facility, Russia
(part of NESA Workshop by
CICE&T)
Existing Facilities in Serpong
(Established in 1980s)
• Conversion of UF6 to UO2
at Fuel Element Production
Installation (for research
reactor fuel manufacture)
• Pelletization (Nat U) at
Experimental Fuel Element
Installation (for HWR fuel
manufacture). Design
capacity ~65 kg U/day,
able to handle enriched U.
• HWR Fuel assembly
Planned Facility • Designed by Center for
Nuclear Facilities
Engineering-BATAN
• Basic design completed in
2013 based on existing pilot
facility in Serpong
• Sited on Serpong
• Design capacity of 710 t
UO2/y
• To adopt international
standards, guides and codes
• To adopt state of the art
equipment, instrumentation
and control
Safety Assessment of Fuel Fabrication Facility: Planned, Existing and Reference Facilities
• Safety assessment is performed on existing facility (hence called assessed facility) against reference facilities
Mining exploration
being performed in
Kalimantan, Sulawesi
and Irian. Milling at lab
scale.
Indonesia manages RR
fuel production facility and
HWR fuel pilot facility in
Serpong. A pilot facility
for HTGR pebble fuel type
is being established in
Yogyakarta.
Nuclear Fuel Cycle Facilities in Indonesia
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Reactor technology and
nuclear safety
Mining and Milling, Fuel Fabrication, Research Reactors, Waste Management
Pilot Plant for Conversion,
Fabrication, PIE
Mining excavation
Management of radwaste
and research reactor
spent fuel
Indonesia operates 3
research reactors, and
plans to deploy an
experimental power
reactor
Waste management centered
in Serpong: Waste treatment,
Interim storage and Planned
short-lived LLW demo
disposal
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The facility is to produce fuel bundle
containing UO2 pellets in zircaloy. The facility
is designed to handle enriched U-235 up to
5%.
UO2
Pellet
s
Fuel
bundle
UO2
Powder
Process among others: mixing, sieving,
compacting, sintering, grinding, fuel filling,
welding for pin and bundle, passivation
Fuel fabrication facility in serpong
• Site visit to nuclear fuel production facility at JSC Mashinostroitelny Zavod – as part of NESA Workshop organized by CICE&T in Obninsk, Russia, 8-12 December 2014
• Overview of nuclear fuel production facility: PWR fuel (Russian, AREVA), CANDU fuel
• Production lines:
Fuel pellets
Fuel assembly
Control assembly
• Automatic quality control process in production line
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Database of Reference Facility:
JSC Mashinostroitelny Zavod
Fuel Pellets - JSC Mashinostroitelny Zavod
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• Process is similar to that in existing fuel fabrication facility in Serpong
• Unit has been undergone revitalization since 1996
• Largely automated included for quality control.
• Allowed production capacity at 204 pellets/min.
• Safety aspects are in place, e.g. in using H2 gas for sintering
Fuel assembly - JSC Mashinostroitelny Zavod
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• Visit to
production unit
PWR fuel
assembly
• Process is
automatic,
including for
quality control.
SAFETY BASIC PRINCIPLE (BP)
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INPRO basic principle for sustainability assessment in the area
of safety of NFCF:
Safety of planned NFCF should be superior compared against safety of
reference NFCF. In the event of an accident, off-site releases of
radionuclides and/or toxic chemicals should be prevented or mitigated so
that there will be no need for evacuation
• There is only 1 BP on draft compare against 4 on original
• There are only 7 URs on draft compare against 14 on original
• There are 22 CR on draft compare against 33 on original
UR1
• UR1 Robustness of design during normal operation: The
uranium or MOX fuel fabrication facility assessed should be
more robust relative to a reference design regarding system
and component failures as well as operation.
• Consists of 6 criteria
1. CR1.1 design of normal operation systems.
2. CR1.2 sub criticality margins
3. CR1.3 operation
4. CR1.4 inspection
5. CR1.5 failures and AOO.
6. CR1.6 occupational
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CR1.1 design of
normal
operation
systems.
IN1.1:
Robustness of
design of normal
operation
systems.
AL1.1: Superior
to a reference
design.
Seismic load. The combined load design of assessed facility is
0.16 g below maximum ground acceleration 0.05 g at the site
meanwhile no earthquake data available for reference facility that
has 2% chance to hit 0.3 g in 50 y.
Flood/Water level. Both facilities have taken flooding into
account in the design.
Fire Prevention. The assessed facility has implemented similar
safety prevention system. Fire Hazard Analysis has been done
based on inspection. A separate more detailed document on Fire
Hazard Analysis needs to be prepared to show robustness.
Explosion Prevention. Both assessed and reference facilities have
necessary measures in place for several parameters. Further
comparative information is needed to prepare a more complete
assessment.
Conclusion: Robustness of the assessed fuel fabrication facility is considered
comparable to that of the reference plant. Assessed facility has an advantage having no
dam upstream compare than reference facility. CR1.1 is conditionally met.
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CR1.2 subcriticality
margins
IN1.2: Sub criticality
margins.
AL1.2: Sufficient to cover
uncertainties and avoid
criticality.
The INPRO methodology requires that the Keff value
be calculated for all possible configurations and the
value should be < 0.90 [Tecdoc 1575 vol 9].
The calculated Keff values for all possible
configurations at assessed facility range from 0.85 –
0.87.
Conclusion: The subcriticality margins are sufficient to cover uncertainties. CR1.2 is
met.
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CR1.3 operation
IN1.3: Quality
of operation.
AL1.3: Superior
to a reference
design
Degree of automation. The assessed facility (pelletizing) has degree of
automation much less than the reference facility in Russia.
Periodic and intensive training. Experiences gaining from existing
facility on training for operators, supervisors and radiation protection
personnel will ease their implementation on planned facility. Types of
training need to be extended as proposed in the NUREG, and details
such as periodicity are to be indicated.
Availability of manuals. Operations and emergency instructions
manuals conform to those at the reference plant and the IAEA Safety.
Periodic mock-ups. Emergency exercises have been carried out at the
existing facility. The reference plant maintains Emergency Management
Program which are annually reviewed at minimum.
Conclusion: CR1.3 is partially met
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CR1.4 inspection
IN1.4: Capability to
inspect.
AL1.4: Superior to a
reference design.
Monitoring of radiation levels as stated on basic design
document of planned facility is comparable to the reference
plant. Such monitoring has been performed at existing facility.
Monitoring of pressure drop across HEPA filters is done once a
week, but no continuous monitoring of pressure drops across
HEPA filters as suggested by the INPRO Methodology. The
HEPA filters are replaced when pressure drops 650 Pa, but in
reference facility the more stringent criteria for replacing filters
are used; a routine schedule, airborne radioactive
concentrations, hood velocity, differential pressure and
particulate penetration
Continous monitoring of cooling water temperature which is
connected to alarm for furnaces is available .
Conclusion: Monitoring of radiation level is acceptable, however, continuous or online
monitoring is limitedly available such as for sintering process, but not for other system
such as HEPA filter. So, CR1.4 is partially met.
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CR1.5 failures and
AOO
IN1.5: Expected
frequency of failures
and AOO.
AL1.5: Superior to a
reference design
There is no evidence that probabilistic as well as
deterministic analyses have been done to determine the
frequency of failure and AOO on planned as well as on
existing facility. But in the safety analysis report of existing
facility, the expected frequency of failures and disturbances
in the facility has been evaluated / determined by using the
qualitative method PHA.
The reference facility develops and maintains an Integrated
Safety Analysis (ISA) but there is no clear statement on
probabilistic or deterministic safety analysis. The safety
analysis method used in the facility is qualitative method
PHA.
Conclusion: No information of the frequency of failures and disturbances is
available at the assessed facility and the reference plant. Hence, no comparative
assessment can be made. So CR 1.5 is not met.
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CR1.6 occupational
dose
IN1.6: Occupational
dose values during
normal operation and
AOO.
AL1.6: Lower than the
dose constraints
Due to processes characteristic involving fresh uranium on
existing and perhaps planned facility, dose accepted by
worker far less then dose constrain. Normally, dose accepted
by worker in existing facility is not more than 1.5 mSv per-
year far less than 50 mSv dose constrain. Data on
occupational dose values during AOO is not available
Conclusion: Occupational dose during normal operation is lower than the dose contrain
but no data available for the AOO. So CE1.6 is partially met
UR2
• UR2 Detection and interception of AOO and failures: The
fuel fabrication facility assessed should detect and intercept
deviations from normal operational states in order to prevent
AOO from escalating to accident conditions.
• Consist of 2 criteria
1. CR2.1 I&C systems
2. CR2.2 grace period after AOO and failures.
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CR2.1 I&C systems
IN2.1: I&C system to
monitor, detect,provide
alarm and together
with operatoractions
intercept and
compensate AOO
andfailures.
AL2.1: Availability of
such systems
and/oroperator actions.
The assessed facility is equipped with control system with
instruments to monitor operation of ventilation, fire alarm,
personnel and work area (video) and audio communication.
I&C at the assessed facility including limits for alarms and
shutdown conditions for process equipment / evacuations
are in place to detect / intercept deviations in order to
deliver safe operations.
At the reference plant, a design philosophy that includes
I&C systems to monitor and control the behavior of Items
Relied on for Safety (IROFS) is implemented.
Conclusion: CR 2.1 is conditionally met.
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CR2.2 grace period after
AOO and failures
IN2.2: Grace period until
human actions are
required after AOO and
failures.
AL2.2: Adequate grace
period is defined in
design analyses.
Disturbance in cooling water is critical to sintering
furnaces. In case of loss of power, back-up genset is
available to drive emergency pump to restore the
circulation. There are four chillers to supply cooling
water with one chiller designated for emergency. The
installation also has three water reservoirs.
Emergency back-up genset (1650 kV, 80 hours) will
start automatically in 15 seconds to serve safety
relevant loads.
No grace period has been determined in the safety
analysis report of assessed facility. No data was
available for the reference plant to allow for
comparative assessment.
Conclusion: CR 2.2 is not met.
UR3
• UR3 Design basis accidents: The frequency of occurrence of DBA in the fuel fabrication facility assessed should be reduced. If an accident occurs, engineered safety features and/or operator actions should be able to restore the facility assessed to a controlled state and subsequently to a safe state, and the consequences should be mitigated to ensure the confinement of nuclear and/or toxic chemical material. Reliance on human intervention in the facility assessed should be minimal, and should only be required after a sufficient grace period.
• Consist of 5 criteria
• CR3.1 frequency of DBA
• CR3.2 engineered safety features and operator procedures
• CR3.3 grace period for DBA
• CR 3.4 bariers
• CR 3.5 robustness of containment design
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CR3.1 frequency of DBA
IN3.1: Calculated frequency
of occurrence of DBA.
AL3.1: Superior to a
reference design
The information indicates that analysis of calculated
frequency of DBA has not been performed at the
assessed facility, and data is also not available for the
reference plant.
Conclusion: CR 3.1. is not met. Data is inadequate to allow for comparative
assessment. More information on calculated frequency of DBA for fuel fabrication
facility must be sought.
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CR3.2 engineered
safety features and
operator
procedures
IN3.2: Reliability
and capability of
engineered safety
features and/or
operator
procedures.
AL3.2: Superior to
a reference design.
The INPRO Methodology refers to engineered safety features
such as temperature control system to shutdown furnaces in
the event of loss of cooling water, and secondary ventilation
systems which would take over in the event of loss of a glove
box barrier .
The assessed facility has in place the followings :
- Redundancy in VAC and chilled water supply,
- Independency in VAC through isolation, physical separation
by distance, barrier, and layout configuration of process
components and equipment
- Diversity for power source for safety & non safety relevant
loads, available emergency power supply
- Fail-safe principle (H2 gas in sintering process)
The features available at the reference plant, e.g. secondary
ventilation system, emergency power supply. Further info is
needed from the reference plant for more detailed assessment.
Conclusion: CR 3.2 is conditionally met.
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CR3.3 grace period for
DBA
IN3.3: Grace period for
DBA until human
intervention is necessary.
AL3.3: Increased relative to
a reference design.
Data was not available for the assessed plant. In the
reference plant, the procedure is to escape
immediately. Further info is required on grace
period for DBA.
Conclusion: CR 3.3. is not met. Data is inadequate to allow for comparative
assessment.
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CR3.4 barriers
IN3.4: Number of
confinement barriers
maintained (intact) after a
DBA.
AL3.4: At least one.
One barrier, the containment/building with
ventilated system, remains intact in the facility
avoiding an emergency release of radioactivity
and/or toxic chemicals to the outside of the facility
after DBA.
Conclusion: CR3.4 is met.
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CR3.5 robustness of
containment design
IN3.5: Containment loads
covered by design of NFCF
assessed.
AL3.5: Superior to a
reference design.
The last barrier is the containment/building which
has been designed to withstand external events like
winds, tornadoes, floods, seismics (0.16 g) and
internal loads like processes and devices loads and
combination loads (combination of permanent,
accidental, winds, thermal and seismic)
Conclusion: CR3.5 is met.
UR4
• UR4 Severe plant conditions: The frequency of occurrence
of emergency release of radioactivity into the environment
from the NFCF should be reduced. Source term of the
emergency release into environment should remain well within
the envelope of reference facility source term and should be so
low that calculated consequences would not require evacuation
of population.
• Consist of 3 criteria
• CR4.1: in-plant severe accident management
• CR4.2: frequency ofemergencyrelease intoenvironment
• CR4.3: source term of emergency release into environment
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CR4.1: in-plant severe accident
management
IN4.1: Natural or engineered
processes, equipment, and AM
procedures and training to
prevent an emergency release to
the environment in the case of
accident
AL4.1: Sufficient to prevent an
emergency release to the
environment and regain control of
the NFCF
There is no evidence that procedures,
equipment and training sufficient to prevent
large release outside containment and regain
control of the facility are available. The
available organization, procedures, aquipment
and training are for accident prevention and
emergency preparedness purposes - not to
regain control of the facility.
Conclusion: CR4.1 is not met.
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CR4.2: frequency of emergency release
into
environment
IN4.2: Calculated frequency of an
emergency release of radioactive
materials and/or toxic chemicals into the
environment.
AL4.2: Lower than in reference facility.
Calculated frequency of emergency
release into
environment only available for
scenario explosion of hydrogen gas in
the furnace. The such calculated
frequency shows the probability of the
release of uranium to the environment
through the stack is 10E-8 per even
well below 10E-6 per unit.-years.
Conclusion: Estimate of frequency of release of radioactivity to the environment was
available for one DBA only So CR4.2 is partially met.
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CR4.3: source term of emergency release into
environment
IN4.3: Calculated inventory and
characteristics (release height, pressure,
temperature, liquids/gas/aerosols, etc) of an
emergency release
AL4.3: Should remain well within the
inventory and characteristics envelope of
reference facility source term and should be so
low that calculated consequences would not
require evacuation of population
Calculation has been performed
on worst scenario, i.e.
instantaneous release of 33.75 g
uranium through the stack . The
result shows radiologcal intake as
low as 0.0878 Bq at 500 m from
the stack.
Conclusion: The result shows that release consequence / dose is sufficiently low to
avoid necessity for evacuation. CR4.3 is met
UR5
• UR5 Independence of DID levels and inherent safety
characteristics: An assessment should be performed for the
fuel fabrication facility to demonstrate that the different
objectives of levels of DID are met and that the levels are more
independent from each other than in existing systems. To excel
in safety and reliability the facility assessed should strive for
incorporating into its design increased emphasis on inherently
safe characteristics.
• Consist of 2 criteria
• CR5.1 independence of DID level
• CR5.2 minimization of hazards
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CR5.1 independence of
DID levels characteristics.
IN5.1: Independence of
different levels of DID in the
fuel fabrication facility
AL5.1: More independence
of the DID levels is
demonstrated compared to
the reference design, e.g.
through deterministic and
probabilistic means,
hazards analysis, etc.
Independence principle for engineered safety features
is implemented through isolation, physical separation
by distance, barrier, and layout configuration of
process components or equipments. VAC system is
physically separated for each work area. Normal power
sources and secondary power sources are also located
at different places (separated with walls). However,
there is no probabilistic, deterministic or hazard
analaysis for assessing independency of DID level
avalaible to assessor.
Conclusion: There is inadequate evidence to justify the sufficiency of the level of
independence for DID. CR5.1 is partially met
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CR5.2 minimization
of
hazards
IN5.2: Examples of
hazards: fire,
flooding,
release of radioactive
material, radiation
exposure, etc.
AL5.2: Hazards
minimized according
to the
state of art.
The assessed facility employs administrative and operator
controls as well safety features, e.g.:
• On line controls (OLCs), e.g. control of pressure,
temperature, and flowrate
• Detector and burner in the case of H2 use in furnaces
• Use of containment for materials and process equipment:
building, room, glove box, and also ventilation
systemequipped with dampers to prevent spread of
contaminants / isolate the room.
• Storing and processing of fisile material has always
performed in sub-critical condition (Keff < 0.9).
The reference facility employs material possession limits,
strict control of combustible and flammable materials,
constraints on procurement, use, and transfer of nuclear
materials
Conclusion: There is evidence that administrative and safety features at assessed
facility in Serpong are comparable with those at the reference plant, but no justification
is available for superiority, so CR5.2 is not met
UR6
• UR6 Human factors related to safety: Safe operation of the
fuel fabrication facility assessed should be supported by taking
into account human factor requirements into design and
operation of the facility, and by establishing and maintaining
an adequate safety culture in all organizations involved in a
nuclear energy system
• Consist of 2 criteria
• CR6.1 human factors
• CR6.2 attitude to safety
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CR6.1 human factors
IN6.1: Human factors
addressed systematically in
the life cycle of the fuel
fabrication facility.
AL6.1: Evidence available.
The followings are evidence of human factors at
existing facility:
• Performing human resources development and
implementing a behaviour based safety system
• Periodic traning to all personel
• Qualification scheme
• Work procedures
• Health check up
Human factors at reference facility is based on he
integrated Behavioral Safety and Human Performance
Program including Behavioral Safety Process, and
Human Performance Process concept and their
implementation.
Conclusion: Human factors have been addressed at Serpong facility, so CR1.6 is met
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CR6.2 attitude to safety.
IN6.2: Prevailing safety
culture.
AL6.2: Evidence provided
by periodic safety reviews.
In the assessed facility, safety culture is recognized,
implemented and reviewed. Some evidence on the
implementation:
- Training of supervisor and all personnel on safety
culture
- Sharing implementation of safety culture
- Self assessment on safety culture
- Socialization and strengthening of individual
commitment to safety
Conclusion: CR6.2 is met
• UR7 R&D for innovative designs: The development of
innovative design features of the fuel fabrication facility
assessed should include associated research, development and
demonstration (RD&D) to bring the knowledge of facility
characteristics and the capability of analytical methods used
for design and safety assessment to at least the same
confidence level as for operating facilities
• Consist of 2 criteria
• CR7.1 RD&D
• CR7.2 safety assessmen
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UR7
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CR7.1 RD&D
IN7.1: RD&D status.
AL7.1: RD&D defined,
performed and
database developed.
There is no RD&D document related to safety
available to assessor. Planned facility is still in basic
design phase, but developer stated that the design will
follow standards, guidelines, prcedures and codes
related to safety. Since the planned facility will use
proven processes, technologies, materials and
components, then a pilot plant is not necessary.
Conclusion. CR7.1 is not met
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CR7.2 safety assessment
IN7.2: Adequate safety
assessment.
AL7.2: Approved by a
responsible regulatory
authority
Licensing to operating non-reactor facility require SAR
approved by the regulator, BAPETEN. The existing
facility has received extension for operation licence
since 2013.
There is no safety assessment submitted to the
regulator for design of planned facility.
Conclusion. CR7.2 not met
Conclusions and Recommendations
Indonesia has benefited from NESA in raising awareness of
NES sustainability and following up actions needed to close
the gaps between the existing facilities and the planned
facilities.
The assessment, however, remains a challenge for newcomers
and even Member States with pilot / lab scale facilities:
• Data availability from overseas reference facility is limited in open
sources.
• Assessment cannot be done using data from conceptual design or small
scale facility, i.e. there are many gaps as consequences from nature of
the design and the methodology.
• CR6.2 can only be evaluated on operating facility because the
responsibility to fulfil the criterion is on operator not in the designer.
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Conclusions and Recommendations
In terms of draft INPRO methodology, BPs, URs and CR are
simpler than the original version
INPRO may need to develop standardized reference NFC
Facility to improve quality of assessmen in such no reliable
data of reference plant are available
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