ML20148L638
| ML20148L638 | |
| Person / Time | |
|---|---|
| Site: | University of Lowell |
| Issue date: | 06/06/1997 |
| From: | Bettenhausen L MASSACHUSETTS, UNIV. OF, LOWELL, MA (FORMERLY LOWELL |
| To: | Michaels T NRC (Affiliation Not Assigned) |
| References | |
| NUDOCS 9706190321 | |
| Download: ML20148L638 (3) | |
Text
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g UNIVERSITY OF MASSACHUSETTS LOWELL ONE UNIVERSITY AVE.
LOWELL, M A 01854-2881 June 6,1997 Theodore S. Michaels, Senior Project Manager PDND/DRPM/NRR Mail Stop 11B20 U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Docket No. 50-223 License No. R-125
Dear Mr. Michaels,
l This letter confirms commitments made in telephone discussions to j
determine void coefficient in the Low Enriched Uranium (LEU) core when it is being installed and tested at the University of Massachusetts Lowell, Research Reactor. A revised LEU Conversion Plan is attached. The methodology will be to introduce a void of known volume in the central flux trap and measure the reactivity change. This will then be related to the analytical determination of void coefficient of reactivity 1
\\
Lee H. Bettenhausen f
Reactor Supervisor
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i
Enclosures:
As Stated cc w/ enclosures:
See Nsxt Page i =.hllh fllf 9706190321 970606 ie -
PDR ADOCK 05000223.
P i
13UU31
_. _...... _. _ _. _ _ _ _ _ ~ _ _. _ _.. _ _ _ _ _ _.. _ _ _ - _
7 U.S. Nuclear Regulatory Commission Docket No. 50-223 cc:
. Desk Copy
.U.S. Nuclear Regulatory Commission Mail Stop llB20
. Washington, D.C. 20555-0001 Mayor of Lowell City Hall Lowell, Massachusetts 08152 Office of Attorney General Environmental Protection Division 19th Floor One Ashburton Place l
Boston, M A 02108 l
l REACTOR SAFETY SUBCOMMITTEE MEMBERS University of Massachusetts Lowell:
John White Warren Church Mary Montesalvo George Chabot Gunter Kegel Lee Bettenhausen Kanti Prasad David R. Medich i
i i
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CONVERSION FROM HEU FUEL TO LEU FUEL i
' UNIVERSITY OF M ASSACHUSETTS LOWELL RESEARCH REACTOR y
Table 12.6.1 LEU CONVERSION PL AN PROPOSED SEQUENCE OF WORK LEU NORMAL 1.
REGULATING BLADE FINAL CONSTRUCTION AND APPROVAL X
2.
PLAN REVIEW AND APPROVAL X
i 3.
SAFETY AND DECON EQUIPMENT X
4.
SCHEDULE FOR FINAL REACTOR SHUTDOWN X
5.
HEU FUEL C00LDOWN REVIEW X
6.
HEU FUEL STORAGE SEQUENCE X
4 7.
M AKE-UP DEMINERALIZER CAPACITY CHECK /
RESIN CHANGE X
8.
CLEAN-UP DEMINERALIZER CAPACITY CHECK /
RESIN CH ANGE X
9.
RECEIPT 0F GRAPHITE REFLECTORS X
10.
STORAGE SEQUENCE FOR GRAPHITE REFLECTORS X
11.
RECEIPT 0F LEU FUEL X
12.
STORAGE OF LEU FUEL X
! 3.
GRAPHITE TEST FIT X,
14.
LEU FUEL TEST FIT X
15.
POOL GATE INSTALLATION X
16.
POOL DRAIN X
17, GRID BOX RADI ATION SURVEY X
18.
GRID BOX INSPECTION X
19.
REGULATING BLADE REMOVAL AND STORAGE X
20.
NEW REGULATING BLADE INSTALLATION X
21.
NEW REGULATING BLADE TESTING X
22.
GATE REMOVAL AND POOL REFILL X
23.
GRAPHITE LOADING X
24.
SAFETY BLADE WITHDRAW AL CHECKS X
j 25.
RESET ALARM AND SCRAM SETPOINTS X
26.
LEU FUEL LOAD AND CRITICALITY DETERMINATION X
27.
PRIM ARY SYSTEM FLOW CHECK WITH FULL CORE X
28.
BLADE WORTH DETERMINATIONS X
29.
EXCESS REACTIVITY DETERMINATION X
30.
VOID COEFFICIENT DETERMINATION X
31.
NEG ATIVE TEMPERATURE COEF. DETERMINATION X
32.
THERM AL FLUX M APPING X
33.
LOW POWER CALIBRATION-CALORIMETRIC X
34.
N-16 MONITOR CALIBRATION X
35.
HIGH POWER CALIBRATION - CALORIMETRIC X
36.
RADI ATION MONITORING LEVELS CHECK X
37.
PHYSICS BEAMPORT PARAMETERS CHECK X
38.
XENON MEASUREMENTS X
39.
NRC AND DOE FINAL REPORTS X
REV 1 6/6/97