NLS2010075, Data from Metamic Coupon Sampling Program

Data from Metamic Coupon Sampling Program

ML102170137
Person / Time
Site:	Cooper
Issue date:	08/02/2010
From:	Vanderkamp D Nebraska Public Power District (NPPD)
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NLS2010075
Download: ML102170137 (11)

Text

H Nebraska Public Power District Always there when you need us NLS2010075 August 2, 2010 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555-0001

Subject:

Data from Metamic Coupon Sampling Program Cooper Nuclear Station, Docket No. 50-298, DPR-46

Reference:

1. Letter from Stewart B. Minahan, Nebraska Public Power District, to U.S.

Nuclear Regulatory Commission, dated April 17, 2007, "Response to Request for Additional Information Regarding License Amendment Request for Onsite Spent Fuel Storage Expansion" (NLS2007012)

2. Letter from David Van Der Kamp, Nebraska Public Power District, to U.S. Nuclear Regulatory Commission, dated September 20, 2007, "Baseline Data for the Metamic Neutron Poison Coupons"

Dear Sir or Madam:

The purpose of this letter is for the Nebraska Public Power District (NPPD) to provide to the Nuclear Regulatory Commission surveillance data from the Cooper Nuclear Station (CNS)

Metamic coupon sampling program. The purpose of the sampling program is to characterize certain physical and chemical properties of the Metamic sample coupons in the CNS spent fuel storage pool. Per Reference 1, NPPD committed to remove a Metamic coupon from the spent fuel pool for testing after 2, 4, 8, 12, 16, 20, 24, and 28 years. The first coupon, # 102-229B-4, has been removed after two years and the testing results are provided in Enclosure 1. No abnormal indications were observed and all acceptance criteria were met.

In addition, per Reference 2, CNS previously submitted baseline data for the Metamic coupons prior to being irradiated. It was subsequently determined that the baseline data provided by the vendor for three of the coupons contained incorrect length and width measurements. The vendor has provided revised baseline data for these three Metamic coupons. During an inspection of the Metamic coupons in July 2010, the three coupons were measured and the revised baseline data verified to be correct. The corrected baseline data is provided in Enclosure 2.

COOPER NUCLEAR STATION P.O. Box 98 / Brownville, NE 68327-0098 Telephone: (402) 825-3877 / Fax: (402) 825-5217 www.nppd.com

NLS2010075 Page 2 of 2 Should you have any questions regarding this matter, please contact me at (402) 825-2904.

Sincerely, David W. Van Der Kamp Licensing Manager

/lb Enclosures cc: Regional Administrator w/enclosures USNRC Region IV Cooper Project Manager w/enclosures USNRC - NRR Project Directorate IV-I Senior Resident Inspector w/enclosures USNRC - CNS NPG Distribution w/o enclosures CNS Records w/enclosures

NLS2010075 Page 1 of 4 Enclosure 1 Testing Data for Metamic Sample Coupon 102-229B-4

I ATTACHMENT I COUPON DATA FORM I ATTACHMENT I COUPON DATA FORM Fn COUPO' COUPON DATA 0404-%)

i~~w ArS iJSf46c.f,.D.t 7b IN7.. FORM0701.- 03.

af-

2W&D; 7J.:A COUPON I. D. : IGz-Z.3-'g-y LD. No*.

A C DATE IN4STALLED: o//otorI/iO DATE REMOVED: o'7/01/zo/O .... ..... ... ....

RADIATION DOSE Z-IZ/r" G ~H% ii4D NOV4oi H ~mk 41'&

D-E

,3Tqm-LrDi-vvJATEu&.n\

.NJ PRE-IRRAD. POST-,RRAD F 1FV WEIGH4T, WAS SPECIFIC GR~AM1 010 gpms/oiz 2

.0.07-0 Z.Gd6o T IB A

IC t1J4 I $ 6 -

LENGTH AND WIDTH, INCHES PRE- POST-IRRAD IRRAt) THICKNESS, in. ABSORPTION X A d.010 9q PRE POST PRE POST KK-T ,ogz. .365** ()03 1014 t-~r fJQ,/* 4

&))A-

.D _____t _ r 08Z EF ',0' F - -

BY AvfA BY A%*W DATE -K DATE

- I. - U I. ~ I ~ -~ F-?-- * ~ -

S* ?5 .- EAD4jol j* FOAI$1 Flloim /IbL4tt Pre-chorad~witoImon Iffsp~otcw / Data /;0

/////Zl/ / Iý/ 7A/,o PosI~firddlallon Inspels,17 op&

PROCEDURE 10.24 REvISION 3 PAGE7OF 6 14

ATTACHMENT 2 COUPON DATA WORKSHEET ATTACHMENT 2 COUPON DATA WORKSHEET COUPON DATA WORKSHEET Exhlb~il 7.3.2 Coupon ID JOZ- ..2. 13"f PRE -IRRADIATION. POST-IRRADIATION DRY WEIGHT, Gins 3(, 3 DRY WEIGHT, Gmis ', -3 WET WEIGHT, Grnm q. WET WEIGHT, Gins Z-8, TEMPERATURE, C L-.- TEMPERATURE, 0 C H20 DEHSITY, g/cc Ocl1-73Z. H20 DENSITY. g/cc 0o 170,49 DENSITY g/ca (,,(19 DENSITY C/cc . 0 DRY WEIGHT DENSITY a 1420 DENSIT DRY WEIGHT - WET WEIGHT 10 ", ,,

PRE-IRRADIATION ATTENUATION POST-IRRADIAT ATTE UATION I[MRECT BEAM BACK<GROUN STANDARD STANDARD SAMPLE CNSA SAMPLE INS 5 TRA*S. 0-10

.. S. - G I K  : .. K- * .. .- -

I. * -~*----- 4 4..i~ & ~ J. .1 ZInspsoefor. Dt I PROCEDURE 10.24 REvISION 3 PAGE8OFI4

Serial Number Data Point Baseline Data July 2010 Data Delta of Base to 2010 Data Acceptance Criteria 102-229B-4 A 6.09 5.99 0.1 Good B 6.01 6.015 0.005 Good Dose C 6.032 6.046 0.014 Good

< 1 mR/hr D 4.015 4.017 0.002 Good E 4.039 4.037 0.002 Good F 4.056 4.058 0.002 Good G 0.081 0.083 0.002 Good H 0.082 0.085 0.003 Good K 0.083 0.088 0.005 Good L 0.083 0.087 0.004 Good M 0.083 0.087 0.004 Good Weight 86.43 86.83 0.462802268 Good Density 2.661 2.66 Data forfor A through M is< in inches. Weight is in grams. of AAC AC Weight is Delta +/- 5%. AC for A through F is < _Delta 0.125". through M is in inches.

for G through 0.07".for Weight is in" % change.

M is -; +/- Delta

NLS2010075 Page 1 of 4 Enclosure 2 Corrected Baseline Data for Metamic Coupons 102-087C-2, 102-138C-5, and 102-229B-4

Hollao Peocadurs NSP-210 COUPON DATA FORM Pog , 10 of 12 Exhlbll 9.1 COUPON 1.D. .1o2-087C-2 ID.No.

DATE INSTALLED:

DATE REMOVED:

RADIATION DOSE: )

NOTES: '4L 22 M & TE USED C-002 M-002 A jB C POST-IRRAD PR6.28AO WEIGHT, GMS SPECIFIC GRAVITY 2.680 6.10 gins/p2

-. . .. -,, .,,,,- ,.. ,., , ].

LENGTH AND WJDTH, INCHES PRE- POST- THICKNESS, In. ABSORPTION X IRRAD IRRAD A 6.186 PRE POST PRE POST B 6.174 C 6.1357 D 4.095 K .08 -

E 4 .o088 __

.... ,,.,,o o F 4.088 II DATEN *'kw

- I ~ ~ - .1~.~~ -

Pro-Charaolarixztlon Inspector / Date Post-Irradlalbot In~pector / Dalf Holtee Procedure HSP-2 10 Page 10 of 12

Holic ProcadurA HSP-210 COUPON DATA FORM Page 10of12 Exhlbli 9,1 COUPON 1.0. : 302-13SC-5 DATE INSTALLED:_

DATE REMOVED:

RADIATION DOSE: D NOTES:

M & TE USED C-002 M-002 E PRE-IRRAD, POST-IRRAE F WEIGHT, GMS 79.44 SPECIFIC GRAVITY 2.1663 B1O gma/cm 2 LENGTH AND WIDTH, INCHES

-PRE- POST-IRRAD IRRAD TRICKNESS, i.i ABSORPTION %

A 6.o07 PRE POST PRE POST

- 6.000 - _ G .075

.C 6.024 D 4.018 E 4.035 F 4.D55 .07E . .. .

m*- .076 BYI~~.

DATE N .....

- - mm I~ I-Pr.CkoooerrolluInspector / Date PFost-Irt'odlollon Ihnpocloi / Data Holtec Procedure HSP-2 10 PgIol Pago 10 of 12

Whcto procedur HSP-210 COUPON DATA FORM Pago I0 D o 12 Exhlb1 9.1 COUPON I. D. ;102-2292-4 DATE INSTALLED:

DATE REMOVED:

ID.

o1w No. A B C RADIATION DOSE:

NOTES:

M & TE USED C-002 M-002

............ ~i iii PRE-IRRAD. POST-IRRAD F WEIGHT, GMS 86.43 SPECIFIC GRAViITY 2.661 810 vInh5/Q?

2 A B C I 4 4 LENGTH AND WIDTH, INCHES PRE- POSPOM THICKNESS, In; ABSORPTION %

IRRAD IRRAD I A 6.090 PRE POST PRE POST B 6.010 G 1081.

O 6.032 H .082 D 4.015 - K .08 E 4.039 L .o8 F 4.056 )m .08 1 By I t IOrE I____ DATE I-"

-- I---

Pre-Chcr~oIertzof~cn Ini~,~i~r f Dale p.ci-Irrodrotlcn It~spt.~lor I Qul, Holtec Procedure H-SP-21 0 Page 10 of 12

4 ATTACHMENT 3 LIST OF REGULATORY COMMITMENTS© ATTACHMENT 3 LIST OF REGULATORY COMMITMENTS©4 Correspondence Number: NLS2010075 The following table identifies those actions committed to by Nebraska Public Power District (NPPD) in this document. Any other actions discussed in the submittal represent intended or planned actions by NPPD. They are described for information only and are not regulatory commitments. Please notify the Licensing Manager at Cooper Nuclear Station of any questions regarding this document or any associated regulatory commitments.

COMMITMENT COMMITTED DATE COMMITMENT NUMBER OR OUTAGE None 4 I.

I I PROCEDURE 0.42 REVISION 25 PAGE 18 OF 25