ML20002A352
| ML20002A352 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe, 07000407 |
| Issue date: | 01/21/1970 |
| From: | Kenna W US ATOMIC ENERGY COMMISSION (AEC) |
| To: | |
| Shared Package | |
| ML20002A351 | List: |
| References | |
| SO-II-32, NUDOCS 8011130378 | |
| Download: ML20002A352 (9) | |
Text
_ _ _ _ _ _ _ _ _ _
~,
. ~
9 e
0FICIAL U3F CJ!LY
.. u._.
-.m
'em-
!!UCLEAR MATERIALS SAFFGUARD3 IK3FECTIC?:
'+ 1 OF SPECIAL NUCLEAR MATF2IAL AT YA! ZEE ATO?'IC ELECTRIC CCMPAI Y
~3 1
RnE, MASSACHUSETTS i
C I!:S PEC TI ^' ::0. S0-II-32 w.t
UG' f p
r.,
J M
- 1
.]
i l
OFFICIAL USE O!!LY m
- 8011aso 37 @
O OFFICIAL USE ONLY TV D1:'Cv7?19:
A.
Safeguards requirements of 10 CFR 70 4.01 - The inspection revealed that YAEC has met the following requirements prescribed by 10 CFR 70:
3.
YABC was not required to submit FMC 's or written material control and accounting procedures under the exclusion provision of 10 CFR 70.51(c).
2.
Possession and use of special nuclear material have been confined to the locations and purposes authorized in the license as required by 30 CFR 70.41.
3.
SNM has not been transferred except to an authorized recipient as 1
required by 10 CFR 70.42.
4.
Records showing the receipt, inventory (including location), acquisi-tion, and transfer of all special nuclear material in Yankee's L
possession have been maintained as required by 10 CFR 70.51(a).
5.
Written material control procedures have been established and maintained
(
as required by 10 CFR 70.51(b)(3 ).
6.
A physical inventory has been conducted as required by 10 CFR 70.51(b)(2).
p;'
(
7.
There have been no losses that required reporting under 10 CFR 70.52.
)
,F l
]s 8.
Fhterial status reports have been submitted semiannually as required by pyr 10 CFR 70.53 The last report was submitted as of September 30, 1969.
y at-9 Transfer reports on shipments and receipts have been properly executed it as required by 10 CFR 70.54.
d B.
Requirements of the License Nos. DFR-3 and SNM-371 5
JQ 4.02 - Atahorized limits and actual possession of SNM under the above
,2 licenses as of November 30, 1960, are as follows :
m 9
i i
License u
-Authorized Limit Possession DPR-3 2300 kgs. U-235 973 kgs. U-235 SNM-371
< 1 gm. U-235
.02 kgs. plutonium
.02 kgs. plutonium OFFICIAL USE ONLY i
[,_
e; _'
h1_'s..= h m8"C A.
s.
._4A 7
m
~
i fa 64 C iNad [ 4 pk OFFICIAL USE ONLY C.
Inventory 4.03 - The inventory of special nuclear material at Yankee included 76 fuel assemblies in the reactor and 18 fuel asse=blies in the irradiated fuel The fuel is enriched uranium (originally 3.5 or 4.9% U-235).
storage basin.
The core also contains less than one gram of high enriched uranium in fission counters. A 15.96 gram PuBe source is maintained at Yankee for calibration of neutron detection instrumentr.
L.0L - The special nuclear material content of irradiated fuel was accepted based upon Yankee's depletion / production calculations as applied to the fabricator's stated EUM content and as confirmed by the inspection team's calculations. The fission counters are carried on Yankee records at the original values even though some nuclear loss can be presumed to have occurred as a result of reactor operation. Tne PuBe neutron source was reported at its original value. Material balance statements covering all S"M at Yankee, with the exception of the fission counters, appear as Appendices A, B, and C.
L.05 - Yankee maintains written inventory precedures and our review indicated that the procedures had been followed.
D.
Inventory Verification 1
4.06 - The inspection team had no means of detenmining the SL'M content of the fuel by nondestructive means.
Therefore the inventory verification is limited to certification of the Yankee inventory records. The presence of the 18 assemblies in the irradiated fuel storage basin was verified. The serial number tag on four of the 18 assemblies was located on the side of 1~
the flow nozzle and could not be seen frem the top of the basin. Serial
.m
'O<T numbers on five of the remaining 14 assemblies were verified te facility 4V-reco rd s.
Fuel in the reactor could not be seen but the locations and serial 7
numbers were traced to facility records. No discrepancies were noted.
1 i'
F.
Reactor Thermal Output 4.07 - Yankee records electric output hourly and converts to the equiva-lent themal output using a family of curves relating the two quantities c;
through condenser backpressure. Heat balances are perferred several times l
monthly to confirm the MWe-MXt relationship and the curves are renormalized i
as necessary. The inspection team found the heat balance to acceptably account for the major heat losses and gains to the system. Audit of
)
Yankee's integration of reactor thermal cutput for two months revealed no discrepancies of significance. Written procedures covoring the calcula-1 tions had been prepared and were being followed.
1 OFFICIAL USE ONLY
O OFFICIAL USE CNLY
-L-r.
!!uclear Materia'. Depletion and Production 4.08 - Yankee performs monthly calculations of nuclear material depletion and production using a series of curves relating specific exposure (MSD/MTU) to depletion and production. The calculations have been performed on prepared forms by an engineer at the Westboro, Macs., offices of YAEC.
Beginning with Core 8 the calculations will be done by enaputer, eliminating the erroro in recding the curves. The curves were developed by Westinghouse ucing the TURBO computer program. TURPG is considered applicable to Yankee.
4.09 - Uuclear material depletion and production calculated by Yankee during the period under review was audited by the inspection team.
Some min'r discrepancies were noted in the manual interpolation of the depletion rur/en, but overall results were in good agreement with the quantities reported by Yankee.
f-A.10 - The inspection team employed the ISOCHECK procedure and manual calculations to determine the adequacy of depletion and production reported l
by the licensee.
It was concluded that the reported quantities were reasonable. A comparison of the YAEE and AEC depletion / production is shoan in Appendix D.
G.
Inte"nal Control 4.11 - The procedures employed at Yankee for the control of special nuclear e
material within the facility were found to be acceptable. Written procedures l
detailed the actions and responsibilities invo]ved in moving SFM and a L
review of the records indicated that the procedures had been followed.
j H.
Records and Reports is 4.12 - The licensee's control records were satisfactory in that all external 4:q activity had been recorded and reported to the AEC as required. Each entry
)
dj into the control records was supported by a source doewnent. Records l
A relating to shipments and receipts were examined and no errors noted.
l v[
Materia) status reparts were issued as required and reflected the activity l
[_
of the licensee.
__y;.
,/
)
-. 1 A-Date of Report:
W. B. K_nna i
January 21, 1970 Director District II Safeguards Office s
g Attachrents:
Appendices A through D C
OFFICIAL USE ONLY e
O o
nFFICIAL USE D'!LY l-YANKEE ATCMIC ELECTRIC COMFA?If MATERIAL BALAI.CE STATEF.t'!C - EJRICHED URANIUM AS CF NOVEMBER 30, 1969 UNITS-Grams Tota] U U-235 Fecinninc Inventory 7/1/68 31,015,674 1,154,898 Feceipts 8,737,488 431,360 bhipments 14,219,636 378,306 Eurnup 372,543 234,726 Fading Inventory 25,160,983 973,226 l:7 l
~.
j l v.
- .s..
n:
a ws l
1 Appendix A 1
It OFFICIAL USE ONLY
- -- --- ; _ ; _==-- g ;g-
- n.._. x,? u
~
O O
OFFICIAL USE Cl!LY YA!!YEE ATOMIC ELECTRIC CCMPANY MATERIAL PALA?!CE STATF2G2!T - PRODUCED PLUTONIUM AS OF 110VF2GER 30,1969 UNITS: Grams Total Pu Pu-23%241 Peginning Invento g 7/1/68 168,663 148,696 Reactor Production 99,841 85,048 Shipments 146,716 126,089 Ending Inventory 121,785 107,655 4
3 o
en.
t%Y li?
g;
, 'a 2:
7.L
' 5.
A' Appendix B 4
l
/
1 4
C OFFICIAL USE ONLY C
..,,,w...
p r--
._.-._.....a..
,, c. s. n w a_
.a
.- g O
O l
OFFICIAL USE O'!LY l
l l
l l
l YA1:F.FE ATOMIC ELECTRIC COMFA!:I MATERIAL PALANCE STATE!ENT - P' TO!:It?J SOURCE Z
T ge u;. v..o w m. 39, 1c,4c.
l l_.
U':IT - Grams Total Pu Pu-23 hEL1 15.96 14.85
.,4 ~
Peginning Inventory 7/1/68
~ ~ ~.
. - #$[
Receipt 3
.s;~~ x U++
Shipments tee 15.96 14.85 h.dl[
Ending Inventory
-.,(;::.
- q.
.n;?
il 9,
k.
Appendix C OFFICIAL USE OtiLY
_a____
.-.... ~. _-
.-......,..m,,,....
~
O o
OFFICIAL U3E ONLY l
l i
YA?iKEE ATOMIC ELECTRIC CCMPA?:Y COMPARISO? OF DEPLETIO!J/PRODUCTIC!! CALCUIATIO?iS I'AY 1,1968 TO NOVEMBFR 30, 1969 Ev.
lHITS:
Kilogramo Yl~
Heoorted (YAEC)
ISICHECK Hand Calculatiens NNE
[? ". "
Core 7(1) l
-:pa..
l@
Total U depletion 367.0 375.7 358.9
)
syh~~
U-235 depletion 231.0 233.1 220.1 Total Fu production 98.0 93.8 96.9 4
%i Core 8(2)
'2
+.
%J; Total U depletion 60.5 59.7 58.7 l
.h I
i U-235 depletion 40.7 43.6 37.2 j
Total Pu production 17.8 18.1 17 3
-q
,o i
(1) From beginning of core (5/1/69) to end of core (8/2/69)
(2) Frem beginning of core (9/17/69) to 11/30/69 Appendix D 1
l l
OFFICIAL USE O??LY k
....