spent fuel pool level instrumentation ea-12-0051 /...

Spent Fuel Pool Level Instrumentation EA-12-0051 / Rec. 7.1 Your Contact: Heiner Dornburg, Product Manager AREVA, Inc. 7207 IBM Drive - Charlotte, NC 28262 Cell: (704) 390-5831 E-Mail: [email protected]

SFP Level Instrumentation SFP Order Milestones

5/31/2012 – NRC issues draft ISG 6/29/2012 – Industry comments on draft ISG 8/31/2012 – NRC issues ISG 2/28/2013 – Plants submit plans to NRC – ask for relief, if needed Response to RAIs, may get plant specific orders 12/31/2016 – (or 2 refueling cycles after ISG issued, whichever is first) – full implementation

2 3rd Post Fukushima Expert Round Table – SFP Instrumentation – J. Scecina / H. Dornburg/ N. Wilkie - p.2

3rd Post Fukushima Expert Round Table – SFP Instrumentation – J. Scecina / H. Dornburg/ N. Wilkie - p.3

One fixed primary channel, one fixed or portable backup Even though not required, it may be prudent to employ diverse

technologies between primary and backup Diverse technologies present a stronger argument for system

survivability A portable channel might be cheaper to install but will require

procedures for when and how to deploy it • FLEX will also provide portable level instrumentation

Separation and independence between channels Missile shielding via building recesses and corners Much of the shielding will be provided by the pool structure itself How will missiles be analyzed? Will NRC expect an analysis?

SFP Level Instrumentation Requirements Discussion 1/3

SFP Level Instrumentation Post Event SFP Status Fukushima

Unit 3 Unit 4


Presentation title – Presenter/ref. - 26 April 2012 - p.5


Seismic mounting Instrument shall maintain design configuration during

maximum seismic event Seismic Cat 1 requirement conspicuously absent from order

Alternate power connection independent of plant AC and DC power distribution, i.e., portable generators or replaceable batteries Procedure and training to be provided for connecting to

alternate sources Are two independent portable generators (or generator +

battery) needed to retain channel independence?

Testing and calibration capabilities shall be provided as part of the instrument design In-situ calibration capability of fixed channel would save labor

versus remove, calibrate, replace method



Display location may be the control room, alternate shutdown panel, or other “appropriate” and accessible location Powering the system from the display location may allow the

best solution for locating the alternate power source or easiest battery replacement What constitutes an appropriate versus inappropriate location? How is accessibility determined, what is it based on?

Display either continuously or on demand Pushbutton at display for taking momentary readings after loss

of normal power can prolong battery life and makes using small batteries feasible.

Training and procedures for instrument testing, calibration and use

Instrument requirements are well defined. NRC guidance is needed for some installation related questions.


SFP Level Instrumentation Installation Aspects

Mounting solutions Mounting of a device alongside the fuel assemblies Space near the transfer mechanism Access to pool – available trenches for conduit or pipe Are floor penetrations needed Mounting to liner

Locating the equipment Wet vs. dry measurement Protection of electronics and any organic parts

Adjacent rooms for electronics Wall penetration for waveguide

Location(s) for level indication Control room / Alternate shutdown panel / Other

Measuring range – to top of fuel elements or deeper


SFP Level Instrumentation AREVA SFP Instrumentation Solutions

AREVA can provide a wide variety of SFP Instrumentation solutions, including: Through-air radar (VEGA) Water level pressure transducer, fixed and portable (AREVA) Magnetic float + reed switches (AREVA) Guided wave radar (VEGA)

AREVA recommendations are: Primary channel, fixed:

through air radar or fixed pressure transducer Secondary channel fixed: diverse solution to channel 1 Secondary channel portable: port. pressure transducer


A strain gauge is mounted to the inside of a stainless steel housing Higher water level means more pressure on the housing, leading to elongation of the strain gauge The resulting change in electric resistance is translated into the water level information For calibration, a defined pressure is applied to the transducer in situ

Presentation title – Presenter/ref. - 26 April 2012 - p.10

SFP Level Instrumentation How It Works: Pressure Transducer

Calibration pressure tube

Tube for wiring

Fixed Installed Transducer

Temperature 250º F Humidity Saturated Steam Accident Radiation TBD Accuracy ± 0.25% F.S. Temperature Error Zero: ± 0.005% F.S/Deg. F

Span: ± 0.005% F.S/Deg. F Available Length As Required Calibration In-situ via pressure calibrator Maintenance None

Not to scale!

A simple, fully analog solution with 4…20mA standard output & display.

Mounted outside of pool.

Mounted using AREVA’s proprietary underwater adhesive bonding, NO welding, drilling or diving required.


SFP Level Instrumentation AREVA Pressure Transducer

Rugged. Simple. Designed specifically for NPP Requirements.


Portable Transducer

Temperature 250º F Humidity Saturated Steam Accident Radiation TBD Accuracy ± 0.25% F.S. Temperature Error Zero: ± 0.005% F.S/Deg. F

Span: ± 0.005% F.S/Deg. F Available Length As Required Calibration Bench calibrate via

pressure calibrator Maintenance None Deployment Unreel MI Cable and drop

transducer to defined depth, connect to comb. readout/power unit.

Simple post-event installation portable channel.


SFP Level Instrumentation Advantages of Pressure Transducer

Very simple, very few parts Fully analog, no software involved Can be used as a portable device Extremely low power consumption No electronics or organic parts in SFP room No maintenance needed (calibration only) In-situ calibration, no removal from pool No work close to pool except for turning the fixed transducer to its calibration position


A Solution developed for SFP in Nuclear Plants.

SFP Level Instrumentation How It Works: Through-Air Radar

Live demonstration of Radar and Transducer will be available starting in May at AREVA’s SFP mockup in Lynchburg, VA!

A packet of microwave pulses are transmitted by the antenna system This pulse is reflected by the water and received by the same antenna system The running time of the RADAR pulse from emission to reception is proportional to the distance to the water surface. „Distance to water surface“ is translated into the level information.


Fixed Installed Through-Air Radar

Temperature: ∼700º F (Waveguide tube/ stilling well). 160º F electronics/readout (located at end of ≤ 100’ waveguide tube outside of SFP room). Humidity: Saturated Steam Accident Radiation: N/A (only metal in SFP room) Accuracy: ± 0.39% in. Temperature Error: None Calibration: Not required, no drift With swivel flange in situ. Maintenance: None Software: SIL2 certified per IEC61508 Power consumption: Extr. Low: 0.5W. Periodic wake-up feature and on demand measurem.

≤ 100ft waveguide, 1-2”

Radiation + temp. shield

Not to scale.

Nothing in the pool. Simple. Highly accurate. No organic parts in the SFP room. Proven.

Pool

Fuel

Ele

men

t


VEGA Through-Air Radar with Bent Waveguide


VEGA Through-Air Radar with Bent Waveguide

Hawaii Lava Level Measurement


SFP Level Instrumentation Advantages of the VEGA Radar Solution

No parts in the pool. Liner not touched, no in-pool mounting, independent from pool water forces. IEC 61508 SIL 2 (Safety Integrity Level) Design Certification, Seismic Cat 1 No need for under water work for calibration or cleaning. No moving parts, very few parts in total (horn, pipe, electronics) very simple overall. No organic parts or electronics in the SFP room (horn and pipe are all stainless steel) Independent from room pressure changes. Very flexible mounting (floor, wall, ceiling) Bent waveguide tube is not larger than any other connection with its protection Very rugged: explosion proof, all metal housing, waveguide tube can be thick walled for missile protection. Measurement forgives pipe dents. Extremely low power consumption, can be operated using two standard 9V batteries. No calibration needed; very simple if desired (swivel flange to turn horn for calibration) Widely used, mature devices (300.000+ sold worldwide) Easy and long-term qualified service and spare parts availability. Most Reliable, 50+ Year MTBF Self Diagnosing (Smart Error Messages)


AREVA SFP Level Measurement Solution

Transmitter and Display Model Options

Accumulator (Battery Pack)

New set of electronics for side chamber

Implementing Production in Cincinnati

Manuals available

Hazardous areas Certs

> 60 hours in continuous mode, Months or Years with Standard Intermittent Measurement Option

Accumulator Haz Location Approach

Ex ia Ex d

ia

VEGADIS 64

Specifications 4…20mA Input Loop-Powered 5-Digit, 0.7” (17.8mm) Upper Display 7 Alphanumeric Character, 0.4 (10.2mm) Lower Display Thru-Glass Button Programming Password Protection 32-Point, Square Root, or Exponential Linearization Loop or External DC-Powered Backlight Standard 3.0V Drop (6.0V with Backlight) Explosion-Proof, IP68, NEMA 4X Enclosure Flange for Wall or Pipe Mounting HART Protocol Transparent Operates from -40 to 75ºC 7-Digit Totalizer Rate in Units per Second, Minute, Hour, or Day Open Collector Pulse or Alarm Output

VEGADIS 64

Easy Wiring and Setup

The meter is factory calibrated for milliamps prior to shipment.

The calibration is certified to NIST standards.

DIS64.UDAX DIS64.UDAA

AREVA is VEGA’s Exclusive Channel for the Nuclear Power Market

Agreement in Place

Exclusive Partner: VEGA Americas, Inc. Largest installed level measurement base of any supplier

worldwide. Control Magazine's 2012 Readers' Choice Awards 1st or 2nd

place in 7 of 12 categories. Winner in Nuclear Level Measurement. Through-air radar references in Hanford Waste Treatment

Plant and at Savanna River Site. Over 60 years of experience.

SFP Level Instrumentation Strength Through Teamwork


SFP Level Instrumentation Level Measurement Principles


Through Air Radar and Water Level Pressure Transducer are AREVA’s Suggested Solutions. We can also deliver others.

Through-air Radar Transducer Float Guided Wave Rad. Hydrostatic Bubbler HJTC / HRTDIn/ Out of Water nothing in pool in w ater in w ater in w ater in w ater in w ater in w ater

Possible Plugging no no filter air systemsSFP Liner Protection nothing in pool glue mounting glue mounting? subm. mount subm. mount subm. mount subm. mount

Overall simplicity w aveguide pipe fully analog float, many p. guide protect. elect. + air syst. many partsMoving Parts none none float compressor

Missile Protection pipe dent forgiving small large + robust sensitive small smallAtmos. Press. Comp. Req'd no yes no yes yes

Know n Technical Issues no no no coax cable cable reliab., mainten. steam effectAffected by radiation no no no coax cable sensor sensor

Affected by Steam no no no sensor liquid column sensorIntrinsic Safety/Hydrogen yes yes yes comp., press. air

SIL/Safety Rated SIL 2*, Cat.1 seism. Cat. 1 seismic SR** IEC SIL*Easy Calibration sw ivel f lange in situ long tool remove sensor?

Seismic Withstand very good very good float assy floating guide compr., reg'ltrMTBF very good very good many parts org. cable compr., reg'ltr many parts

Best Fit Technology yes yes

AREVA Delivery Capab. - -

Key = Good *Software Integrity Level per IEC 61508= Medium or unknown ** AREVA device SR for use in Europe= Poor

Advantages and Benefits AREVA ‘User Group’ Approach

Pooling of ideas and know-how before work begins Choice of most efficient approach Regular and event-triggered meetings Source of input and feedback Faster progress Cost sharing for same or similar activities. Lower cost Future Exchange of Experience, Spares. Better operation, maintenance and long-term support.

Faster, Easier, Better, more Cost Effective. Solutions for Less Money.


SFP Instrumentation User Group Approach 1/2

1. Preparation Phase: Requirements Analysis and Technology Demo (Lynchburg, VA) Introduction on NRC requirements and available technical solutions:

• Technical data • Demonstration of working models (LYB SFP) • Manufacturing and testing locations and QA • Delivery model and lead times • Installation and commissioning details and support • Maintenance requirements • Budgetary Price and Schedule (Pre-Study, Hardware, EPC)

Challenge questions, Q&A regarding every topic. Utility/site specific requirements (technical, schedule, approach for

implementation) SFP details (size, room and pool photos/drawings, accessibility, …) Discussion of Pre-Study: Expected deliverables

Documented summary of requirements

User Group

Contract


2. Study Phase (Plant location?) Results of SFP walk-downs (one for each plant/pool type) – plant specifics Mounting of sensors, connections and display. Implementation of the portable solution, if any. Status of Scoping Studies: presentation, discussion. Goal for the completion of the studies.

3. Mod-Package Phase (Charlotte, NC) Final Sensor and mounting solutions, detailed configuration of the systems. Details for mod-package phase. Site implementation details.

4. Implementation Phase (VEGA Technical Center) Manufacturing, FAT, QA planning On-site work approach Training

5. Completion Lessons learned exchange Transfer into support phase

SFP Instrumentation User Group Approach 2/2 User Group


SFP Level Instrumentation Solution Strategy

Scoping Study

• Concept design, incl. mounting, cable routing, pwr. supply, display. Definition of scope of supplies. Scheduling, budgeting.

• Benefit: Maximized certainty, optimized project basis.

Mod. Package

• Plant specific detail design. Ideally provided as part of EPC contract. • Benefit: Modif. package done by AREVA supports correct input for

product manufacturing and provides a single point of accountability.

Hardware Delivery

• Choices. Proven solutions adapted to plant specific needs. • Augmented quality, fully tested. Proven properties. The right documentation. • Benefit: All requirements fulfilled. Solution without in-pool mounting,

Implemen-tation

• Training. Site installation and commissioning by AREVA DZ LLC or customer resources with AREVA field engineer.

• Benefit: Complete, seamless solution by AREVA, clear responsibilities.

Maximized Certainty and Lowest Installed Cost.


Why AREVA? More available choices. You will get the right solution for your specific needs. The strongest team. Combined strengths of the nuclear leader and the #1 in level measurement! AREVA has all the needed engineering and the product

quality augmentation capabilities under one roof. VEGA provides unparalleled level measurement expertise.

Complete solution capability means one-stop-shopping for everything you need. We have proven our willingness and ability to support you before the sale. You can trust in us also being there after it – for quick and efficient plant life support.

We Want to Earn Your Business in SFP Level Instrumentation.


Spent Fuel Pool Level Instrumentation EA-12-0051 / Rec. 7.1 Jim Scecina, Product Engineer Heiner Dornburg/ Product Manager N. Wilkie, Manager Special Business Charlotte, NC - April 17, 2012

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