ML20003D639
| ML20003D639 | |
| Person / Time | |
|---|---|
| Site: | 07001100 |
| Issue date: | 11/21/1980 |
| From: | Pianki F ABB COMBUSTION ENGINEERING NUCLEAR FUEL (FORMERLY |
| To: | Partlow J NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| References | |
| 18095, NUDOCS 8103300017 | |
| Download: ML20003D639 (2) | |
Text
,
f
& fM //l0?'Y Te! 203/ E88 1911 C E Power Systems T e re x 99237 Cemeusten Engreenrg. ;rc 10co Wescer elAcac Wincser. Ccnnect.cu CC95
~
a POWER R.El SYSTEMS
/ eM.'
/
n, r "t.9_. '.!.'. u i..
9 November 21, 1980 DEC15 Z > by,. 4 N om
- w. p.m U. S. Nuclear Regulatory Commission m.A M/
Docygg 7,
O!t/?c g.1 Division of Safeguards gg,'A' n
4 f ' g g,,r 73 $, J_-
ypf 7915 Eastern Ave.
ff Mail Stop 881-SS Qk
([/
, IL SEcTicu s'
pU O'$4 9
. M r Cuw 7-Attention: Mr. James G. Partlow, Chief Material Control & Accountabilliff "'
ISJJ gji
.s -
Licensing Branch
' '4'
% f,f p.
, g
'n' m
p U
k Gentlemen:
/.,y s :::,
Pursuant to discussions held between representativ...~ combustion Engineering, Inc., and the NRC on Thursday, November 6, 1980 at the NRC office in Silver Spring, the following describes the approach to be taken for item control of fuel rods during our December 1930 physical inventory.
In preparation for the physical inventory, the fuel rod tray labels, Production Control Location / Content Log, and the original fuel rod cards / pre-list summaries This step will aid us in resolution of will all be compared against each other.
any problems and discrepancies prior to the start of the physical inventory, and Additionally, Production gives us a reliable data base for inventory purposes.
Control item transfer logs, Accountability item transfer logs, and the NMM item transfer logs will be reconciled as of 11/30/80, assuring completeness of records.
These steps are new control steps that will provide confidence in our records and our inventory pre-listings.
During the inventory, two procedures will be employed to provide confidence that the pre-listed inventory information is accurate:
1)' Each and every rod in a number of randomly selected trays (minimum of 5-10 trays) will be identified and cross-checked against the A sufficient number of rods (minimum appropriate tray listing.
1500-3000 rods) will be checked to assure a 99* confidence of 99".
accuracy for the entire inventory compilation (reference Jaech, J.
L.), "On the Use of Tolerance Intervals in Acceptance Sampling by Attributes", Journal of Quality Technology, Vol. 4, No. 2, April 1972, pg. 69-73). Any errors incurred in the checking of this large sample the resolution of errors, and b) the specifying of will require a) a larger sample, if that is necessary, to maintain the desired 99:99 confidence statement, following appropriate statistical methodology (reference Jaech, ibid).
7'C'?' f L'?'". M
.?!$$ h. 0
.L-0 %,
810 s s o o ot?
gw w
, g,,,
g
4" 2)
In addition, the inventory teams will check every tray by e'
identifying no less than 2.0% of the fuel rods, checking the rod identity numbers stamped on the rod aga. inst the tray listing. This is twice the number of rods checked during previous inventories. Any errors incurred in this step will be resolved pursuant to the requirements of 10 CFR 70.58.
These measures are being initiated to provide significantly better item control and accurate inventory data. The additional control and large sample of cross-checks provides a very high degree of confidence that our information concerning the quantity, location, and identity of fuel rods is accurate and complete.
Additional control measures for the transfer.and inventory of discrete
. items will be implemented as soon as they can be developed. These will be described in future ' correspondence as they are developed and implemented.
Very truly-?ours,
]c t
F.11. Pianki, General. Manager Nuclear Fuel Manufacturing-Windsor-
~
hc-'
s o
s P
4
. ~.
' FJP/GCK/HTC/ssb.
- ' " - - ' cs
( *
._