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| {{#Wiki_filter:P r a i r i e I s l a n d N u c l e a r G e n e r a t i n g P l a n t N R C R e g i o n I I I R e g u l a t o r y C o n f e r e n c e R a d i o a c t i v e M a t e r i a l T r a n s p o r t a t i o n E v e n t M a r c h 1 7 , 2 0 0 9 2 A g e n d a*O p e n i n g R e m a r k s -M i k e W a d l e y*S e q u e n c e o f E v e n t s -S c o t t N o r t h a r d *C a u s e s a n d C o r r e c t i v e A c t i o n s -S c o t t N o r t h a r d*P u b l i c R a d i a t i o n S a f e t y S i g n i f i c a n c e -S c o t t N e l s o n*C o n c l u s i o n -M i k e W a d l e y*C l o s i n g R e m a r k s -D e n n i s K o e h l 3 O p e n i n g R e m a r k s*P r a i r i e I s l a n d t a k e s i t s o b l i g a t i o n t o p r o t e c t t h e h e a l t h a n d s a f e t y o f t h e p u b l i c v e r y s e r i o u s l y-W e a g r e e w i t h t h e p e r f o r m a n c e d e f i c i e n c y , a n d t h e t w o v i o l a t i o n s a s s o c i a t e d w i t h t h e r a d i o a c t i v e m a t e r i a l s h i p m e n t-C a u s e s a n d c o r r e c t i v e a c t i o n s-P u b l i c r a d i a t i o n s a f e t y s i g n i f i c a n c e 4 S e q u e n c e o f E v e n t s S c o t t N o r t h a r d , P l a n t M a n a g e r 5 S e q u e n c e o f E v e n t s*O c t o b e r 2 3 , 2 0 0 8 -F u e l s i p p i n g e q u i p m e n t r e m o v e d f r o m t h e s p e n t f u e l p o o l , d e c o n n e d , s u r v e y e d , a n d w r a p p e d (L i d w a s 1 2 0 m R/h r)*O c t o b e r 2 4 , 2 0 0 8 -F u e l s i p p i n g e q u i p m e n t w a s l o a d e d i n t o s h i p p i n g c o n t a i n e r , s u r v e y e d a n d p l a c e d o n t h e t r a i l e r (H i g h e s t d o s e r a t e 1 7 0 m R/h r o n t h e m i d d l e b o t t o m o f c o n t a i n e r) *O c t o b e r 2 5 , 2 0 0 8 -S h i p p i n g p e r s o n n e l p e r f o r m e d c h a r a c t e r i z a t i o n o f f u e l s i p p i n g c o n t a i n e r 6 S e q u e n c e o f E v e n t s*O c t o b e r 2 9 , 2 0 0 8 -R W S C p e r f o r m e d c o n f i r m a t o r y s u r v e y o f c o n t a i n e r d o s e r a t e s t o v e r i f y c o n t a c t d o s e r a t e s w e r e w i t h i n D O T l i m i t s*O c t o b e r 2 9 , 2 0 0 8 -S h i p m e n t l e f t P r a i r i e I s l a n d*O c t o b e r 3 0 , 2 0 0 8 -S h i p m e n t a r r i v e d a t t h e r e c e i v i n g f a c i l i t y i n P e n n s y l v a n i a*O c t o b e r 3 0 , 2 0 0 8 -R e c e i v i n g f a c i l i t y p e r s o n n e l p e r f o r m e d i n i t i a l r e c e i p t s u r v e y o f t h e v e h i c l e a n d c o n f i r m e d d o s e r a t e s w e r e w i t h i n D O T l i m i t s 7 S e q u e n c e o f E v e n t s*O c t o b e r 3 1 , 2 0 0 8 -S h i p p i n g c o n t a i n e r s u r v e y w a s p e r f o r m e d b y t h e R e c e i v i n g F a c i l i t y-P a c k a g e s u r v e y i n d i c a t e d D O T l i m i t s e x c e e d e d o n a s m a l l s p o t o n t h e m i d d l e b o t t o m o f c o n t a i n e r:*2 , 0 0 0 m R/h r T e l e t e c t o r G e i g e r-M u e l l e r (G M) d e t e c t o r*8 0 0 m R/h r R O-2 I o n C h a m b e r (I C) d e t e c t o r-S t a t e o f P e n n s y l v a n i a a n d P r a i r i e I s l a n d n o t i f i e d-R e g i o n I I I R P I n s p e c t o r n o t i f i e d-S u s p e n d e d a l l r a d i o a c t i v e s h i p m e n t s p e n d i n g i n v e s t i g a t i o n a n d c o r r e c t i v e a c t i o n s 8 S e q u e n c e o f E v e n t s*N o v e m b e r 3 , 2 0 0 8 -N S P M F l e e t R a d i a t i o n P r o t e c t i o n M a n a g e r a n d a n R P T e c h n i c i a n a r r i v e d a t f a c i l i t y -c o n f i r m e d r e a d i n g s a n d l o c a t e d a d i s c r e t e p a r t i c l e o n a c a b l e-M a x i m u m d o s e r a t e 1 6 3 0 m R/h r T e l e p o l e G M-S h i p p i n g c o n t a i n e r p l a c e d b a c k o n t r a i l e r-V e r i f i e d v e h i c l e l i m i t s w e r e n o t e x c e e d e d-R e a d i n g s m a t c h e d i n i t i a l t r a n s p o r t v e h i c l e s u r v e y a t P r a i r i e I s l a n d S u m m a r y o f R a d i a t i o n M e a s u r e m e n t s 9 7 m R/h r E D E r a t e G e n e r a t e d E f f e c t i v e D o s e E q u i v a l e n t (E D E) r a t e c a l c u l a t i o n (R I S 2 0 0 3-0 4)1 6 3 0 m R/h r (T e l e p o l e G M)P r a i r i e I s l a n d c o n f i r m a t o r y s u r v e y 2 0 0 0 m R/h r (T e l e t e c t o r G M)8 0 0 m R/h r (R O-2 I C)P e r f o r m e d s h i p p i n g p a c k a g e s u r v e y i n s t o r a g e a r e a A l l r e s u l t s i n c o m p l i a n c e w i t h D O T v e h i c l e l i m i t s P e r f o r m e d v e h i c l e r e c e i p t s u r v e y. P a c k a g e r e m o v e d f r o m t r a i l e r , s e t i n R M A (n o p a c k a g e s u r v e y).1 5 0 m R/h r o n b o x (T e l e p o l e G M)R W S C p e r f o r m e d c o n f i r m a t o r y p a c k a g e s u r v e y a s w e l l a s v e h i c l e s u r v e y.1 7 0 m R/h r o n b o x (T e l e p o l e G M)P a c k a g e l o a d e d w i t h e q u i p m e n t , s u r v e y e d , p l a c e d o n f l a t b e d.1 2 0 m R/h r o n l i d (R O-2 I C)E q u i p m e n t S u r v e y P e r f o r m e d 1/2/2 0 0 9 1 1/3/2 0 0 8 1 0/3 1/2 0 0 8 1 0/3 0/2 0 0 8 1 0/2 9/2 0 0 8 1 0/2 4/2 0 0 8 1 0/2 3/2 0 0 8 P r a i r i e I s l a n d C a l c u l a t i o n M e a s u r e m e n t s a t W a l t z M i l l M e a s u r e m e n t s a t P r a i r i e I s l a n d A c t i v i t y 1 0 M i s s e d O p p o r t u n i t i e s*J o b P l a n n i n g m i s s e d k e y m e t h o d s/H U t o o l s*D i s c r e t e R a d i o a c t i v e P a r t i c l e n o t d e t e c t e d*4 9 C F R S u b p a r t H q u a l i f i c a t i o n s n o t v e r i f i e d*P a c k a g i n g d i d n o t f i x p a r t i c l e s i n p l a c e*R W S C d i d n o t i n s p e c t p a c k a g i n g i n s i d e b o x*D i f f e r e n c e s i n c o n t e n t v s. s u r f a c e r e a d i n g s n o t q u e s t i o n e d b y R W S C , a n d r e a d i n g s c l o s e t o D O T l i m i t d i d n o t r e q u i r e a d d i t i o n a l o v e r s i g h t 1 1 C a u s e s a n d C o r r e c t i v e A c t i o n s*P r a i r i e I s l a n d R a d i a t i o n P r o t e c t i o n p e r s o n n e l d i d n o t a p p l y h u m a n p e r f o r m a n c e f u n d a m e n t a l s i n j o b p l a n n i n g a n d a l l o w e d a n u n a c c e p t a b l e l e v e l o f t o l e r a n c e f o r r i s k -P r e J o b B r i e f s n o w r e q u i r e i d e n t i f i c a t i o n o f c r i t i c a l s t e p s a n d a p p l i c a t i o n o f H U t o o l s f o r e r r o r r e d u c t i o n-R i s k M a t r i x d e v e l o p e d t o g u i d e R P r e l a t e d a c t i v i t y d e c i s i o n-m a k i n g-S i t e w i d e f o c u s o n H u m a n P e r f o r m a n c e I m p r o v e m e n t P l a n s-D i a g n o s t i c A s s e s s m e n t u s e d i n s u p e r v i s o r c o a c h i n g t o a d d r e s s b e h a v i o r s 1 2 C a u s e s a n d C o r r e c t i v e A c t i o n s*P r a i r i e I s l a n d R a d i a t i o n P r o t e c t i o n m e t h o d s w e r e i n a d e q u a t e t o d e t e c t t h e p r e s e n c e o f d i s c r e t e p a r t i c l e c o n t a m i n a t i o n o n m a t e r i a l s -P r o c e d u r e s n o w r e q u i r e t h e u s e o f r a d i a t i o n s u r v e y i n s t r u m e n t s t h a t p r o v i d e f a s t e r r e s p o n s e w i t h a n a u d i b l e i n d i c a t i o n o f d i s c r e t e p a r t i c l e s-A l l P r a i r i e I s l a n d R P T e c h n i c i a n s h a v e r e c e i v e d a d d i t i o n a l t r a i n i n g i n t h e u s e o f t h e c o r r e c t s u r v e y i n s t r u m e n t s a n d r e l a t e d p r o c e d u r e s 1 3 C a u s e s a n d C o r r e c t i v e A c t i o n s*P r a i r i e I s l a n d R a d i a t i o n P r o t e c t i o n m e t h o d s w e r e i n a d e q u a t e t o s u c c e s s f u l l y p a c k a g e r a d i o a c t i v e m a t e r i a l s -P r a i r i e I s l a n d n o w r e q u i r e s c o n t e n t s t o b e t i g h t l y w r a p p e d t o p r e v e n t t h e m f r o m s h i f t i n g i n t r a n s i t-A l l R P T e c h n i c i a n s h a v e r e c e i v e d a d d i t i o n a l t r a i n i n g i n t h e s e n e w p a c k i n g m e t h o d s-R W S C m u s t d i r e c t l y o v e r s e e t h e p a c k a g i n g o f a l l m a t e r i a l s f o r h i g h r i s k s h i p m e n t s-A l l p e r s o n n e l i n v o l v e d w i t h p a c k a g i n g a n d s h i p p i n g m u s t h a v e 4 9 C F R S u b p a r t H q u a l i f i c a t i o n s v e r i f i e d-H i g h R i s k s h i p m e n t s r e q u i r e c l o s e d t r a n s p o r t t r a i l e r 1 4 C a u s e s a n d C o r r e c t i v e A c t i o n s*P r a i r i e I s l a n d m a n a g e m e n t e n g a g e m e n t i n s h i p p i n g r a d i o a c t i v e m a t e r i a l s w a s i n a d e q u a t e -R a d i a t i o n P r o t e c t i o n S u p e r v i s o r n o w r e q u i r e d t o a p p r o v e s h i p m e n t s e x c e e d 4 0% o f D O T l i m i t s-P a c k a g e s p o t e n t i a l l y c o n t a i n i n g d i s c r e t e r a d i o a c t i v e p a r t i c l e s r e q u i r e R P M a n a g e r a p p r o v a l-S h i p m e n t s e x c e e d i n g 8 0% o f D O T l i m i t s r e q u i r e P l a n t M a n a g e r a p p r o v a l 1 5 P u b l i c R a d i a t i o n S a f e t y S i g n i f i c a n c e S c o t t N e l s o n , F l e e t R a d i a t i o n P r o t e c t i o n M a n a g e r 1 6 P u b l i c R a d i a t i o n S a f e t y S i g n i f i c a n c e R a d i a t i o n M e a s u r e m e n t s t a k e n a t r e c e i v e r f a c i l i t y*O c t o b e r 3 1 , 2 0 0 8 -R e a d i n g s r e p o r t e d t o t h e S t a t e o f P e n n s y l v a n i a:*2 , 0 0 0 m R/h r T e l e t e c t o r G M d e t e c t o r*8 0 0 m R/h r R O-2 I o n C h a m b e r d e t e c t o r 1 7 G-M a n d I o n C h a m b e r T e c h n o l o g y F u n d a m e n t a l D i f f e r e n c e s G e i g e r-M u e l l e r *H i g h s e n s i t i v i t y*R u g g e d , l i g h t , a n d h a s a u d i b l e o u t p u t*B e s t t o d e t e r m i n e t h e p r e s e n c e o f a r a d i a t i o n f i e l d D o e s n o t m e a s u r e t r u e d o s e r a t e I o n C h a m b e r *S l o w e r r e s p o n s e*M o s t a c c u r a t e*U s e d f o r c o n f i r m a t o r y m e a s u r e m e n t s M e a s u r e s t r u e d o s e r a t e A d d i t i o n a l R e f e r e n c e s*N R C R e g u l a t o r y G u i d e 7.3 , "P r o c e d u r e s f o r P i c k i n g U p a n d R e c e i v i n g R a d i o a c t i v e M a t e r i a l"*C R C P D E-5 , "G e n e r i c P r o c e d u r e s f o r t h e I n s p e c t i o n o f L o w-l e v e l R a d i o a c t i v e W a s t e C o n v e y a n c e , P a c k a g i n g a n d F o r m"B o t h d o c u m e n t s d i r e c t r e s u r v e y w i t h m o r e a c c u r a t e i n s t r u m e n t s w h e n l i m i t s a r e e x c e e d e d 1 8 S a f e t y S i g n i f i c a n c e*W e c o n c l u d e d:-I o n c h a m b e r m e a s u r e m e n t w a s t h e m o s t a c c u r a t e a s s e s s m e n t o f d o s e r a t e o n t h e p a c k a g e -D o s e r a t e s w e r e l e s s t h a n f i v e t i m e s t h e l i m i t , w h i c h m e e t s t h e c r i t e r i a f o r a W h i t e f i n d i n g 1 9 2 0 C o n c l u s i o n M i k e W a d l e y , S i t e V i c e P r e s i d e n t 2 1 C o n c l u s i o n*O u r p e r f o r m a n c e l e a d i n g u p t o t h i s s h i p m e n t d i d n o t m e e t e x p e c t a t i o n s a n d r e p r e s e n t s a n e r o s i o n o f p u b l i c c o n f i d e n c e*W e a g r e e w i t h t h e p e r f o r m a n c e d e f i c i e n c y a n d t h e a s s o c i a t e d v i o l a t i o n s*I m m e d i a t e a g g r e s s i v e a c t i o n s w e r e t a k e n t o p r e v e n t a n y f u r t h e r v i o l a t i o n s*T h o r o u g h e v a l u a t i o n a n d c o m p r e h e n s i v e c o r r e c t i v e a c t i o n s w e r e i m p l e m e n t e d*I o n C h a m b e r i s t h e m o s t a c c u r a t e i n s t r u m e n t f o r a s s e s s i n g s i g n i f i c a n c e a n d r e s u l t s i n a W h i t e f i n d i n g 2 2 C l o s i n g R e m a r k s D e n n i s K o e h l , C h i e f N u c l e a r O f f i c e r}} | | {{#Wiki_filter:DRAFT Prairie Island Nuclear Generating Plant NRC Region III Regulatory Conference Radioactive Material Transportation Event March 17, 2009 |
| | |
| | DRAFT Agenda |
| | * Opening Remarks - Mike Wadley |
| | * Sequence of Events - Scott Northard |
| | * Causes and Corrective Actions - Scott Northard |
| | * Public Radiation Safety Significance - Scott Nelson |
| | * Conclusion - Mike Wadley |
| | * Closing Remarks - Dennis Koehl 2 |
| | |
| | DRAFT Opening Remarks |
| | * Prairie Island takes its obligation to protect the health and safety of the public very seriously |
| | - We agree with the performance deficiency, and the two violations associated with the radioactive material shipment |
| | - Causes and corrective actions |
| | - Public radiation safety significance 3 |
| | |
| | DRAFT Sequence of Events Scott Northard, Plant Manager 4 |
| | |
| | DRAFT Sequence of Events |
| | * October 23, 2008 - Fuel sipping equipment removed from the spent fuel pool, deconned, surveyed, and wrapped (Lid was 120 mR/hr) |
| | * October 24, 2008 - Fuel sipping equipment was loaded into shipping container, surveyed and placed on the trailer (Highest dose rate 170 mR/hr on the middle bottom of container) |
| | * October 25, 2008 - Shipping personnel performed characterization of fuel sipping container 5 |
| | |
| | DRAFT Sequence of Events |
| | * October 29, 2008 - RWSC performed confirmatory survey of container dose rates to verify contact dose rates were within DOT limits |
| | * October 29, 2008 - Shipment left Prairie Island |
| | * October 30, 2008 - Shipment arrived at the receiving facility in Pennsylvania |
| | * October 30, 2008 - Receiving facility personnel performed initial receipt survey of the vehicle and confirmed dose rates were within DOT limits 6 |
| | |
| | DRAFT Sequence of Events |
| | * October 31, 2008 - Shipping container survey was performed by the Receiving Facility |
| | - Package survey indicated DOT limits exceeded on a small spot on the middle bottom of container: |
| | * 2,000 mR/hr Teletector Geiger-Mueller (GM) detector |
| | * 800 mR/hr RO-2 Ion Chamber (IC) detector |
| | - State of Pennsylvania and Prairie Island notified |
| | - Region III RP Inspector notified |
| | - Suspended all radioactive shipments pending investigation and corrective actions 7 |
| | |
| | DRAFT Sequence of Events |
| | * November 3, 2008 - NSPM Fleet Radiation Protection Manager and an RP Technician arrived at facility - confirmed readings and located a discrete particle on a cable |
| | - Maximum dose rate 1630 mR/hr Telepole GM |
| | - Shipping container placed back on trailer |
| | - Verified vehicle limits were not exceeded |
| | - Readings matched initial transport vehicle survey at Prairie Island 8 |
| | |
| | DRAFT Summary of Radiation Measurements Activity Measurements at Prairie Island Measurements at Waltz Mill Prairie Island Calculation 10/23/2008 10/24/2008 10/29/2008 10/30/2008 10/31/2008 11/3/2008 1/2/2009 Equipment Survey Performed 120 mR/hr on lid (RO-2 IC) |
| | Package loaded with 170 mR/hr equipment, surveyed, placed on box on flatbed. (Telepole GM) |
| | RWSC performed confirmatory 150 mR/hr package survey as well as on box vehicle survey. (Telepole GM) |
| | Performed vehicle receipt All results in survey. Package removed from compliance trailer, set in RMA (no package with DOT survey). vehicle limits Performed shipping package 2000 mR/hr survey in storage area (Teletector GM) 800 mR/hr (RO-2 IC) |
| | Prairie Island confirmatory 1630 mR/hr survey (Telepole GM) |
| | Generated Effective Dose 97 mR/hr Equivalent (EDE) rate EDE rate calculation (RIS 2003-04) |
| | |
| | DRAFT Missed Opportunities |
| | * Job Planning missed key methods/HU tools |
| | * Discrete Radioactive Particle not detected |
| | * 49 CFR Subpart H qualifications not verified |
| | * Packaging did not fix particles in place |
| | * RWSC did not inspect packaging inside box |
| | * Differences in content vs. surface readings not questioned by RWSC, and readings close to DOT limit did not require additional oversight 10 |
| | |
| | DRAFT Causes and Corrective Actions |
| | * Prairie Island Radiation Protection personnel did not apply human performance fundamentals in job planning and allowed an unacceptable level of tolerance for risk |
| | - PreJob Briefs now require identification of critical steps and application of HU tools for error reduction |
| | - Risk Matrix developed to guide RP related activity decision-making |
| | - Site wide focus on Human Performance Improvement Plans |
| | - Diagnostic Assessment used in supervisor coaching to address behaviors 11 |
| | |
| | DRAFT Causes and Corrective Actions |
| | * Prairie Island Radiation Protection methods were inadequate to detect the presence of discrete particle contamination on materials |
| | - Procedures now require the use of radiation survey instruments that provide faster response with an audible indication of discrete particles |
| | - All Prairie Island RP Technicians have received additional training in the use of the correct survey instruments and related procedures 12 |
| | |
| | DRAFT Causes and Corrective Actions |
| | * Prairie Island Radiation Protection methods were inadequate to successfully package radioactive materials |
| | - Prairie Island now requires contents to be tightly wrapped to prevent them from shifting in transit |
| | - All RP Technicians have received additional training in these new packing methods |
| | - RWSC must directly oversee the packaging of all materials for high risk shipments |
| | - All personnel involved with packaging and shipping must have 49 CFR Subpart H qualifications verified |
| | - High Risk shipments require closed transport trailer 13 |
| | |
| | DRAFT Causes and Corrective Actions |
| | * Prairie Island management engagement in shipping radioactive materials was inadequate |
| | - Radiation Protection Supervisor now required to approve shipments exceed 40% of DOT limits |
| | - Packages potentially containing discrete radioactive particles require RP Manager approval |
| | - Shipments exceeding 80% of DOT limits require Plant Manager approval 14 |
| | |
| | DRAFT Public Radiation Safety Significance Scott Nelson, Fleet Radiation Protection Manager 15 |
| | |
| | DRAFT Public Radiation Safety Significance Radiation Measurements taken at receiver facility |
| | * October 31, 2008 |
| | - Readings reported to the State of Pennsylvania: |
| | * 2,000 mR/hr Teletector GM detector |
| | * 800 mR/hr RO-2 Ion Chamber detector 16 |
| | |
| | DRAFT G-M and Ion Chamber Technology Fundamental Differences Geiger-Mueller Ion Chamber |
| | * High sensitivity |
| | * Slower response |
| | * Rugged, light, and has |
| | * Most accurate audible output |
| | * Used for confirmatory |
| | * Best to determine the measurements presence of a radiation field Does not measure true Measures true dose rate dose rate 17 |
| | |
| | DRAFT Additional References |
| | * NRC Regulatory Guide 7.3, Procedures for Picking Up and Receiving Radioactive Material |
| | * CRCPD E-5, Generic Procedures for the Inspection of Low-level Radioactive Waste Conveyance, Packaging and Form Both documents direct resurvey with more accurate instruments when limits are exceeded 18 |
| | |
| | DRAFT Safety Significance |
| | * We concluded: |
| | - Ion chamber measurement was the most accurate assessment of dose rate on the package |
| | - Dose rates were less than five times the limit, which meets the criteria for a White finding 19 |
| | |
| | DRAFT Conclusion Mike Wadley, Site Vice President 20 |
| | |
| | DRAFT Conclusion |
| | * Our performance leading up to this shipment did not meet expectations and represents an erosion of public confidence |
| | * We agree with the performance deficiency and the associated violations |
| | * Immediate aggressive actions were taken to prevent any further violations |
| | * Thorough evaluation and comprehensive corrective actions were implemented |
| | * Ion Chamber is the most accurate instrument for assessing significance and results in a White finding 21 |
| | |
| | DRAFT Closing Remarks Dennis Koehl, Chief Nuclear Officer 22}} |
|
|---|
Category:Meeting Agenda
MONTHYEARPMNS20240269, Notice of Meeting with Northern States Power Company - Minnesota, Doing Business as Xcel Energy2024-02-26026 February 2024
Notice of Meeting with Northern States Power Company - Minnesota, Doing Business as Xcel Energy
ML24029A0382024-01-31031 January 2024
January 31, 2024, Pre-application Meeting Presentation - Prairie Island ISFSI License Amendment Request to Add Grace to License Conditions
ML24008A0132024-01-0808 January 2024
Notice of Public Meeting with Xcel Energy to Discuss the Prairie Island ISFSI Amendment
ML23159A2542023-06-0808 June 2023
Pre-application Meeting with Xcel Energy to Discuss the Amendment Application for the Prairie Island ISFSI
PMNS20230663, Notice of Meeting with Northern States Power Company, Doing Business as Xcel Energy2023-06-0202 June 2023
Notice of Meeting with Northern States Power Company, Doing Business as Xcel Energy
ML23102A1752023-04-14014 April 2023
April 14, 2023 TS 3.7.8 LAR Pre-Submittal Meeting Slides
PMNS20230262, Notice of Meeting with Northern States Power Company, Doing Business as Xcel Energy2023-04-12012 April 2023
Notice of Meeting with Northern States Power Company, Doing Business as Xcel Energy
PMNS20220096, Pre-Application Meeting with Xcel Energy to Discuss Pressure-Temperature Limit Report Amendment for Prairie Island Nuclear Generating Plant, Units 1 and 2 (Prairie Island)2022-02-0707 February 2022
Pre-Application Meeting with Xcel Energy to Discuss Pressure-Temperature Limit Report Amendment for Prairie Island Nuclear Generating Plant, Units 1 and 2 (Prairie Island)
PMNS20211339, Meeting with Northern States Power Company Regarding Prairie Island Nuclear Generating Plant, Units 1 and 2, License Amendment Request Related to the Cooling Water System2021-10-15015 October 2021
Meeting with Northern States Power Company Regarding Prairie Island Nuclear Generating Plant, Units 1 and 2, License Amendment Request Related to the Cooling Water System
ML21221A0202021-08-11011 August 2021
Nis Pr Bypass Test Panel License Amendment Request
PMNS20210949, Meeting with Northern States Power Company Regarding Prairie Island Nuclear Generating Plant, Units 1 and 2, Proposed License Amendment Request2021-07-21021 July 2021
Meeting with Northern States Power Company Regarding Prairie Island Nuclear Generating Plant, Units 1 and 2, Proposed License Amendment Request
PMNS20210528, Meeting with Northern States Power Company Regarding Prairie Island Nuclear Generating Plant, Units 1 and 2, Proposed License Amendment Request2021-05-0505 May 2021
Meeting with Northern States Power Company Regarding Prairie Island Nuclear Generating Plant, Units 1 and 2, Proposed License Amendment Request
ML21022A0082021-01-22022 January 2021
Teleconference with Xcel Energy to Discuss a Planned License Amendment Request for Monticello Nuclear Generating Plant (Monticello) and Prairie Island Nuclear Generating Plant, Units 1 and 2 (Prairie Island)
ML20280A6092020-10-0606 October 2020
Teleconference to Discuss the Prairie Island Nuclear Generating Plant, Units 1 and 2, (Prairie Island) License Amendment Request to Adopt TSTF-505 Provide Risk-Informed Extended Completion Times RITSTF Initiative 4b
ML19347B0722019-12-12012 December 2019
TVA and Xcel Energy Slides for Joint Presubmittal Meeting to License Amendment Requests to Adopt WCAP-17661, Revision 1
ML19268A0422019-09-26026 September 2019
Pre-Application Meeting License Amendment Request Revise Technical Specifications to Adopt Risk Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b
ML19070A2412019-03-11011 March 2019
Notice of Meeting with Xcel Energy to Discuss a Seismic Considerations for a Proposed License Amendment Increasing the Amount of Special Nuclear Material Authorized for Storage at the Prairie Island ISFSI
ML19074A1312019-03-11011 March 2019
Revised Notice of Meeting with Xcel Energy to Discuss a Seismic Considerations for a Proposed License Amendment Increasing the Amount of Special Nuclear Material Authorized for Storage at the Prairie Island ISFSI
ML19045A6682019-02-14014 February 2019
Notice of Meeting with Xcel Energy to Discuss a Proposed License Amendment Increasing the Amount of Special Nuclear Material Authorized for Storage at the Prairie Island Independent Spent Fuel Storage Installation
ML15183A3992015-07-0101 July 2015
Ltr. 07/01/15 Point Beach U.S. Nuclear Regulatory Commission Region III 2015 Operator Licensing Workshop (Public Meeting) (Drm)
ML15183A3862015-07-0101 July 2015
Ltr. 07/01/15 Prairie Island U.S. Nuclear Regulatory Commission Region III 2015 Operator Licensing Workshop (Public Meeting) (Drm)
ML15183A4842015-07-0101 July 2015
Ltr. 07/01/15 Davis-Besse U.S. Nuclear Regulatory Commission Region III 2015 Operator Licensing Workshop (Public Meeting) (Drm)
ML15183A4792015-07-0101 July 2015
Ltr. 07/01/15 D.C. Cook U.S. Nuclear Regulatory Commission Region III 2015 Operator Licensing Workshop (Public Meeting)(Drm)
ML15183A4782015-07-0101 July 2015
Ltr. 07/01/15 Duane Arnold U.S. Nuclear Regulatory Commission Region III 2015 Operator Licensing Workshop (Public Meeting) (Drm)
ML15183A4722015-07-0101 July 2015
Ltr. 07/01/2015 Fermi U.S. Nuclear Regulatory Commission Region III 2015 Operator Licensing Workshop (Public Meeting) (Drm)
ML15183A4632015-07-0101 July 2015
Ltr. 07/01/15 Monticello U.S. Nuclear Regulatory Commission Region III 2015 Operator Licensing Workshop (Public Meeting) (Drm)
ML15183A4452015-07-0101 July 2015
Ltr. 07/01/15 Perry U.S. Nuclear Regulatory Commission Region III 2015 Operator Licensing Workshop (Public Meeting) (Drm)
ML15182A4412015-07-0101 July 2015
Notice and Agenda - 2015 Operator Licensing Workshop
ML15114A0432015-04-23023 April 2015
PI 2014 PIR and EOC Meeting Notice
ML14169A5862014-06-13013 June 2014
Operator License Workshop Invitation
ML13056A0262013-02-25025 February 2013
Regulatory Conference Slide Presentation
ML12326A9702012-11-21021 November 2012
Summary of October 24, 2012, Meeting with the Northern States Power Company, D/B/A Excel Energy Regarding Security Requirements and Changes Pertaining to Prairie Island TAC L24689 W/ Encl 1 (Attendees) and Encl 2 (Agenda)
ML12318A0572012-11-13013 November 2012
12/6/2012 - Rescheduled Notice of Meeting with Xcel Energy Concerning Prairie Island Nuclear Generating Plant, Units 1 and 2
ML12306A3222012-11-0101 November 2012
Notice of Forthcoming Meeting with Xcel Energy Concerning Prairie Island Nuclear Generating Plant, Units 1 and 2
ML12249A2702012-09-11011 September 2012
Notice of Forthcoming Pre-Application Meeting with Xcel Energy, Inc. Concerning Prairie Island Nuclear Generating Plant
ML12138A3312012-05-17017 May 2012
05/31/2012, Notice of Significant Licensee Meeting (non-public) Regarding Operator Licensing Workshop and Meeting
ML1208703892012-03-30030 March 2012
Notice of Pre-Application Meeting with Xcel Energy Concerning Prairie Island Nuclear Generating Plant, Units 1 and 2, to Discuss Licensee'S Proposed NFPA 805, Performance Based Standard for Fire Protection for Light Weight Reactor ...
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Pre-Application Meeting for Prairie Island Nuclear Generating Plant (Ping) Extended Power Uprate (EPU)
ML1121505252011-08-0404 August 2011
Notice of Forthcoming Pre-Application Meeting with Licensee for Prairie Island Nuclear Generating Plant, Units 1 and 2 to Discuss Extended Power Uprate License Amendment Request
ML1119903462011-07-28028 July 2011
Meeting Presentation, Prairie Island Nuclear Generating Plant - Failure to Maintain the Train a and B Direct Current Electrical Power Subsystems Operable
ML1113703982011-05-20020 May 2011
Notice of Forthcoming Pre-Application Meeting with Licensee for Prairie Island Nuclear Generation Plant, Units 1 and 2, to Discuss Proposed Technical Specification and Licensing Basis Changes to Diesel Fuel Oil System
ML1104702792011-02-16016 February 2011
Notice of Forthcoming Meeting with Licensee for Prairie Island Nuclear Generating Plant, Unit 1 to Discuss License Amendment Request to Revise Surveillance Requirement Footnote in Technical Specification 3.8.1, AC Sources - Operating.
ML1100502702011-01-0505 January 2011
Notice of Closed Pre-Application Meeting NSPM Staff to Discuss Proposed Physical Security Plan Changes That Will Be Submitted for NRC Review and Approval Via License Amendment Request
ML1032603272010-11-24024 November 2010
Notice of Pre-Application Meeting with Licensee for Prairie Island Nuclear Generating Plant, Units 1 and 2 to Discuss Spent Fuel Pool Criticality and Extended Power Uprate
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Meeting Presentation Alternative Source Term Steam Generator Tube Rupture Margin to Overfill Evaluation - Prairie Island Nuclear Generating Plant
ML1022200872010-08-10010 August 2010
Forthcoming Meeting with Northern States Power Company - Minnesota (Nspm), to Discuss the Prairie Island Nuclear Generating Plant Steam Generator Margin-to-Overfill Analysis as It Relates to Pingp'S License Amendment Request to Adopt...
ML1009707112010-04-0808 April 2010
Revised Notice of Pre-Application Meeting with Licensee for Prairie Island Nuclear Generating Plant, Units 1 and 2 to Discuss Extended Power Uprate License Amendment Request
ML1008205732010-03-26026 March 2010
Notice of Forthcoming Pre-Application Meeting with Licensee for Prairie Island Nuclear Generating Plant, Units 1 and 2 to Discuss Extended Power Uprate License Amendment Request
ML0932901282009-12-0101 December 2009
Licensee Slides for Public Meeting
ML0933102842009-12-0101 December 2009
Notice of Meeting with Prairie Island to Address Substantive Cross-Cutting Issues in the Area of Human Performance - Slides
2024-02-26
[Table view]
Category:Meeting Briefing Package/Handouts
MONTHYEARML24127A2402024-05-0707 May 2024
Presentation Slides for Prairie Island 2023 End-of-Cycle Meeting
ML24029A0382024-01-31031 January 2024
January 31, 2024, Pre-application Meeting Presentation - Prairie Island ISFSI License Amendment Request to Add Grace to License Conditions
ML23168A0032023-06-20020 June 2023
Handout for 6/23/2023 Pre-Application Public Meeting with Prairie Island Nuclear Generating Plant to Revise ISFSI TS 4.4 for TN-40HT Casks
ML23156A2602023-06-0505 June 2023
2022 Prairie Island End-of-Cycle Meeting Presentation
ML23102A1752023-04-14014 April 2023
April 14, 2023 TS 3.7.8 LAR Pre-Submittal Meeting Slides
ML22130A5852022-05-10010 May 2022
2021 Monticello and Prairie Island Nuclear Generating Plant End-of-Cycle Meeting Presentation
ML22048B1812022-02-18018 February 2022
Pre-Application Meeting for Prairie Island TS 5.6.6, PTLR, LAR
ML21221A0202021-08-11011 August 2021
Nis Pr Bypass Test Panel License Amendment Request
ML21166A3792021-06-15015 June 2021
Units 1 and 2 2020 End-of-Cycle Meeting Presentation
ML21032A2632021-02-0303 February 2021
Slides for Public Meeting with Xcel Energy to Discuss a Planned Amendment to Combine the Emergency Plans and Create a Common Emergency Offsite Facility for Monticello and Prairie Island
ML19347B0722019-12-12012 December 2019
TVA and Xcel Energy Slides for Joint Presubmittal Meeting to License Amendment Requests to Adopt WCAP-17661, Revision 1
ML19268A0422019-09-26026 September 2019
Pre-Application Meeting License Amendment Request Revise Technical Specifications to Adopt Risk Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b
ML19210D4512019-07-22022 July 2019
Abeyance Seal Preapplication Meeting Slides
ML18051A1752018-02-20020 February 2018
Pre-Application Meeting License Amendment for TSTF-425 Relocation of Specific Surveillance Frequency Requirements to a Licensee Controlled Program Xcel Energy 2/20/2018
ML17240A3382017-08-30030 August 2017
Non-Safety Related Digital Feedwater and Amsac/Dss Control Systems Replacement Project Presentation
ML17198A2632017-07-17017 July 2017
Pre-Application Meeting
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Spent Fuel Pool Criticality Technical Specification Changes Round 2 Request for Additional Information Public Meeting: March 9, 2017
ML17037D1172017-02-0707 February 2017
License Amendment Requests for Change in Emergency Plan Staff Augmentation Response Times Pre-Submittal Meeting for Prairie Island Nuclear Generating Plant Monticello Nuclear Generating Plant: February 7, 2017
ML17023A0652017-01-24024 January 2017
Pre-Submittal Call Regarding License Amendment Requests for Prairie Island Nuclear Generating Plant, Units 1 and 2 and Monticello Nuclear Generating Plant Emergency Action Level Scheme Changes
ML15140A3342015-05-13013 May 2015
Public Meeting 05132015 Licensee Slides Only
ML15105A0372015-04-14014 April 2015
Xcel Energy Slide Presentation to Support Pre-Application Meeting on April 14, 2015, to Discuss Nuclear Fuel Design Transition to Include Integral Fuel Burnable Absorber (Ifba) at the Prairie Island Nuclear Generating Plant
ML14323B0222014-11-19019 November 2014
Regcon, November 19-20, 2014: 03-Info-Session-2 Ronald Johnson - Tribal Perspective on Continued Storage
ML14153A0242014-05-16016 May 2014
Xcel Energy'S Presentation Slides Supporting a May 16, 2014, Public Meeting to Discuss the Flood Hazard Reevaluation Schedule for the Monticello and Prairie Island Nuclear Generating Plants
ML14058A1732014-02-19019 February 2014
Diesel Generator Steady State Voltage and Frequency Limits - Prairie Island Nuclear Generating Plant Meeting February 19, 2014
ML13210A2012013-07-29029 July 2013
2012 End-of-Cycle Slides - Licensee
ML13210A2002013-07-11011 July 2013
2012 End-of-Cycle Slides
ML13056A0262013-02-25025 February 2013
Regulatory Conference Slide Presentation
ML12340A5402012-12-0606 December 2012
Reactor Core Cooling & Heat Removal FLEX Strategy - Phase 1
ML12326A9712012-11-21021 November 2012
Encl 3 (Handouts - Public) to Summary of October 24, 2012, Meeting with the Northern States Power Company, D/B/A Excel Energy Regarding Security Requirements and Changes Pertaining to Prairie Island TAC L24689
ML12277A1762012-10-0404 October 2012
Steam Generator Replacement Presentation
ML12275A4652012-09-27027 September 2012
Meeting September 27, 2012 - Handouts
ML12275A3782012-09-27027 September 2012
Xcel Energy Prairie Island Nuclear Generating Plant Meeting Presentation, Diesel Generator Voltage and Frequency Limits.
ML12205A2172012-07-23023 July 2012
NRC 2011 End-of-Cycle Slides
ML12205A2202012-07-17017 July 2012
Licensee 2012 End-of-Cycle Slides
ML12115A3112012-04-24024 April 2012
Meeting Slides: 04/24/2012 Meeting with Xcel Energy NFPA 805 Presubmittal - Prairie Island Nuclear Generating Plant
ML1207904792012-03-14014 March 2012
March 14, 2012 Telecon Slides
ML1122803892011-08-18018 August 2011
Pre-Application Meeting for Prairie Island Nuclear Generating Plant (Ping) Extended Power Uprate (EPU)
ML1119903462011-07-28028 July 2011
Meeting Presentation, Prairie Island Nuclear Generating Plant - Failure to Maintain the Train a and B Direct Current Electrical Power Subsystems Operable
ML1117804242011-06-22022 June 2011
June 22, 2011, Meeting Handout #1 - NRC Meeting Diesel Fuel Oil LAR for Prairie Island Ngp
ML1120701572011-06-22022 June 2011
June 22, 2011, Meeting Handout #2 - Proposed Technical Specification Changes for Prairie Island Ngp Diesel Fuel Oil LAR
ML1106600792011-03-0303 March 2011
March 3, 2011 Meeting Handouts - Revise Footnote in TS 3.8.1, Prairie Island Nuclear Generating Plant
ML1034701142010-12-14014 December 2010
Excel Energy Slides for Public Meeting 12/14/2010 to Discuss Human Performance Issues
ML1027802642010-10-0404 October 2010
Session 4 - Heather Westra Presentation at October 4, 2010, Public Meeting on Groundwater Protection
ML1023805712010-08-25025 August 2010
Meeting Presentation Alternative Source Term Steam Generator Tube Rupture Margin to Overfill Evaluation - Prairie Island Nuclear Generating Plant
ML1014502432010-05-26026 May 2010
Responses to Questions from the Prairie Island Indian Community Concerning Issues Related to Prairie Island Nuclear Generating Plant
ML1012604192010-05-20020 May 2010
Meeting Presentation Prairie Island Annual Assessment Meeting - Reactor Oversight Program - 2009
ML1012503422010-05-0505 May 2010
Regulatory Conference Slides
ML1015801072010-04-28028 April 2010
2R26 Outage, SG Tube Inspection Telecon Slides
ML1010604782010-04-15015 April 2010
April 15, 2010, Meeting Slides - Pre-Application Meeting for Prairie Island Ngp Extended Power Uprate
ML0932901282009-12-0101 December 2009
Licensee Slides for Public Meeting
2024-05-07
[Table view]
Category:Slides and Viewgraphs
MONTHYEARML24127A2402024-05-0707 May 2024
Presentation Slides for Prairie Island 2023 End-of-Cycle Meeting
ML24059A4042024-03-0606 March 2024
March 6, 2023, Presubmittal Meeting for License Amendment Request to Modify Technical Specifications Definitions & Approve Plant-Specific Methods for Response Time Testing (EPID L-2024-LRM-0034) - Slides
ML24029A0382024-01-31031 January 2024
January 31, 2024, Pre-application Meeting Presentation - Prairie Island ISFSI License Amendment Request to Add Grace to License Conditions
ML23168A0032023-06-20020 June 2023
Handout for 6/23/2023 Pre-Application Public Meeting with Prairie Island Nuclear Generating Plant to Revise ISFSI TS 4.4 for TN-40HT Casks
ML23156A2602023-06-0505 June 2023
2022 Prairie Island End-of-Cycle Meeting Presentation
ML23102A1752023-04-14014 April 2023
April 14, 2023 TS 3.7.8 LAR Pre-Submittal Meeting Slides
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2021 Monticello and Prairie Island Nuclear Generating Plant End-of-Cycle Meeting Presentation
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Pre-Application Meeting for Prairie Island TS 5.6.6, PTLR, LAR
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Units 1 and 2 2020 End-of-Cycle Meeting Presentation
ML21124A0652021-05-0606 May 2021
Xcel Energy Presentation for May 6, 2021 Public Meeting to Discuss 24-Month Cycles at Prairie Island Nuclear Generating Plant, Units 1 and 2
ML21032A2632021-02-0303 February 2021
Slides for Public Meeting with Xcel Energy to Discuss a Planned Amendment to Combine the Emergency Plans and Create a Common Emergency Offsite Facility for Monticello and Prairie Island
ML20266F1052020-09-23023 September 2020
(PINGP) COVID-19 Exemption Request for the 2020 Biennial Emergency Preparedness Exercise
ML20212L8622020-07-29029 July 2020
2019 Monticello and Prairie Island EOC Presentation from Webinar
ML20098F0682020-04-0909 April 2020
Preapplication Teleconference Presentation: License Amendment Request to Adopt TSTF-569
ML20057D3082020-02-18018 February 2020
Slides Potential License Amendment to Remove Note from LCO 3.4.12 and LCO 3.4.13
ML19268A0422019-09-26026 September 2019
Pre-Application Meeting License Amendment Request Revise Technical Specifications to Adopt Risk Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b
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License Amendment Request to Reclassify Certain Fuel Handling Equipment
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Pre-Application Meeting License Amendment for TSTF-425 Relocation of Specific Surveillance Frequency Requirements to a Licensee Controlled Program Xcel Energy 2/20/2018
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Non-Safety Related Digital Feedwater and Amsac/Dss Control Systems Replacement Project Presentation
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Summary of July 17, 2017, Meeting with Northern States Power Company, Doing Business as Xcel Energy, on Potential License Amendment Request Related to Heavy Lifting Devices
ML17198A2632017-07-17017 July 2017
Pre-Application Meeting
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Spent Fuel Pool Criticality Technical Specification Changes Round 2 Request for Additional Information Public Meeting: March 9, 2017
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License Amendment Requests for Change in Emergency Plan Staff Augmentation Response Times Pre-Submittal Meeting for Prairie Island Nuclear Generating Plant Monticello Nuclear Generating Plant: February 7, 2017
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Pre-Submittal Call Regarding License Amendment Requests for Prairie Island Nuclear Generating Plant, Units 1 and 2 and Monticello Nuclear Generating Plant Emergency Action Level Scheme Changes
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Flood Hazard Reevaluation Report - Response to Requested Information (CAC Nos. MF7710 and MF7711) - Figure 2 of 3
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Flood Hazard Reevaluation Report - Response to Requested Information (CAC Nos. MF7710 and MF7711) - Figure 3 of 3
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Flood Hazard Reevaluation Report - Response to Requested Information (CAC Nos. MF7710 and MF7711) - Figure 1 of 3
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Slides: Prairie Island Independent Spent Fuel Storage Installation - License Renewal Application - Discussion of Requests for Additional Information, for June 16, 2014, Public Meeting
ML14153A0242014-05-16016 May 2014
Xcel Energy'S Presentation Slides Supporting a May 16, 2014, Public Meeting to Discuss the Flood Hazard Reevaluation Schedule for the Monticello and Prairie Island Nuclear Generating Plants
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2012 End-of-Cycle Slides - Licensee
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2012 End-of-Cycle Slides
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Xcel Energy Prairie Island Nuclear Generating Plant Meeting Presentation, Diesel Generator Voltage and Frequency Limits.
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Licensee 2012 End-of-Cycle Slides
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ML1207904792012-03-14014 March 2012
March 14, 2012 Telecon Slides
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ML1117804242011-06-22022 June 2011
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2024-05-07
[Table view] |
Text
DRAFT Prairie Island Nuclear Generating Plant NRC Region III Regulatory Conference Radioactive Material Transportation Event March 17, 2009
DRAFT Agenda
- Opening Remarks - Mike Wadley
- Sequence of Events - Scott Northard
- Causes and Corrective Actions - Scott Northard
- Closing Remarks - Dennis Koehl 2
DRAFT Opening Remarks
- Prairie Island takes its obligation to protect the health and safety of the public very seriously
- We agree with the performance deficiency, and the two violations associated with the radioactive material shipment
- Causes and corrective actions
- Public radiation safety significance 3
DRAFT Sequence of Events Scott Northard, Plant Manager 4
DRAFT Sequence of Events
- October 23, 2008 - Fuel sipping equipment removed from the spent fuel pool, deconned, surveyed, and wrapped (Lid was 120 mR/hr)
- October 24, 2008 - Fuel sipping equipment was loaded into shipping container, surveyed and placed on the trailer (Highest dose rate 170 mR/hr on the middle bottom of container)
- October 25, 2008 - Shipping personnel performed characterization of fuel sipping container 5
DRAFT Sequence of Events
- October 29, 2008 - RWSC performed confirmatory survey of container dose rates to verify contact dose rates were within DOT limits
- October 29, 2008 - Shipment left Prairie Island
- October 30, 2008 - Shipment arrived at the receiving facility in Pennsylvania
- October 30, 2008 - Receiving facility personnel performed initial receipt survey of the vehicle and confirmed dose rates were within DOT limits 6
DRAFT Sequence of Events
- October 31, 2008 - Shipping container survey was performed by the Receiving Facility
- Package survey indicated DOT limits exceeded on a small spot on the middle bottom of container:
- 800 mR/hr RO-2 Ion Chamber (IC) detector
- State of Pennsylvania and Prairie Island notified
- Region III RP Inspector notified
- Suspended all radioactive shipments pending investigation and corrective actions 7
DRAFT Sequence of Events
- November 3, 2008 - NSPM Fleet Radiation Protection Manager and an RP Technician arrived at facility - confirmed readings and located a discrete particle on a cable
- Maximum dose rate 1630 mR/hr Telepole GM
- Shipping container placed back on trailer
- Verified vehicle limits were not exceeded
- Readings matched initial transport vehicle survey at Prairie Island 8
DRAFT Summary of Radiation Measurements Activity Measurements at Prairie Island Measurements at Waltz Mill Prairie Island Calculation 10/23/2008 10/24/2008 10/29/2008 10/30/2008 10/31/2008 11/3/2008 1/2/2009 Equipment Survey Performed 120 mR/hr on lid (RO-2 IC)
Package loaded with 170 mR/hr equipment, surveyed, placed on box on flatbed. (Telepole GM)
RWSC performed confirmatory 150 mR/hr package survey as well as on box vehicle survey. (Telepole GM)
Performed vehicle receipt All results in survey. Package removed from compliance trailer, set in RMA (no package with DOT survey). vehicle limits Performed shipping package 2000 mR/hr survey in storage area (Teletector GM) 800 mR/hr (RO-2 IC)
Prairie Island confirmatory 1630 mR/hr survey (Telepole GM)
Generated Effective Dose 97 mR/hr Equivalent (EDE) rate EDE rate calculation (RIS 2003-04)
DRAFT Missed Opportunities
- Job Planning missed key methods/HU tools
- Discrete Radioactive Particle not detected
- 49 CFR Subpart H qualifications not verified
- Packaging did not fix particles in place
- RWSC did not inspect packaging inside box
- Differences in content vs. surface readings not questioned by RWSC, and readings close to DOT limit did not require additional oversight 10
DRAFT Causes and Corrective Actions
- Prairie Island Radiation Protection personnel did not apply human performance fundamentals in job planning and allowed an unacceptable level of tolerance for risk
- PreJob Briefs now require identification of critical steps and application of HU tools for error reduction
- Risk Matrix developed to guide RP related activity decision-making
- Site wide focus on Human Performance Improvement Plans
- Diagnostic Assessment used in supervisor coaching to address behaviors 11
DRAFT Causes and Corrective Actions
- Prairie Island Radiation Protection methods were inadequate to detect the presence of discrete particle contamination on materials
- Procedures now require the use of radiation survey instruments that provide faster response with an audible indication of discrete particles
- All Prairie Island RP Technicians have received additional training in the use of the correct survey instruments and related procedures 12
DRAFT Causes and Corrective Actions
- Prairie Island Radiation Protection methods were inadequate to successfully package radioactive materials
- Prairie Island now requires contents to be tightly wrapped to prevent them from shifting in transit
- All RP Technicians have received additional training in these new packing methods
- RWSC must directly oversee the packaging of all materials for high risk shipments
- All personnel involved with packaging and shipping must have 49 CFR Subpart H qualifications verified
- High Risk shipments require closed transport trailer 13
DRAFT Causes and Corrective Actions
- Prairie Island management engagement in shipping radioactive materials was inadequate
- Radiation Protection Supervisor now required to approve shipments exceed 40% of DOT limits
- Packages potentially containing discrete radioactive particles require RP Manager approval
- Shipments exceeding 80% of DOT limits require Plant Manager approval 14
DRAFT Public Radiation Safety Significance Scott Nelson, Fleet Radiation Protection Manager 15
DRAFT Public Radiation Safety Significance Radiation Measurements taken at receiver facility
- Readings reported to the State of Pennsylvania:
- 2,000 mR/hr Teletector GM detector
- 800 mR/hr RO-2 Ion Chamber detector 16
DRAFT G-M and Ion Chamber Technology Fundamental Differences Geiger-Mueller Ion Chamber
- Most accurate audible output
- Best to determine the measurements presence of a radiation field Does not measure true Measures true dose rate dose rate 17
DRAFT Additional References
- CRCPD E-5, Generic Procedures for the Inspection of Low-level Radioactive Waste Conveyance, Packaging and Form Both documents direct resurvey with more accurate instruments when limits are exceeded 18
DRAFT Safety Significance
- Ion chamber measurement was the most accurate assessment of dose rate on the package
- Dose rates were less than five times the limit, which meets the criteria for a White finding 19
DRAFT Conclusion Mike Wadley, Site Vice President 20
DRAFT Conclusion
- Our performance leading up to this shipment did not meet expectations and represents an erosion of public confidence
- We agree with the performance deficiency and the associated violations
- Immediate aggressive actions were taken to prevent any further violations
- Thorough evaluation and comprehensive corrective actions were implemented
- Ion Chamber is the most accurate instrument for assessing significance and results in a White finding 21
DRAFT Closing Remarks Dennis Koehl, Chief Nuclear Officer 22
