ML20151H163
| ML20151H163 | |
| Person / Time | |
|---|---|
| Site: | University of Buffalo |
| Issue date: | 07/21/1988 |
| From: | Alexander Adams Office of Nuclear Reactor Regulation |
| To: | Nelson R AIR FORCE, DEPT. OF |
| Shared Package | |
| ML20151H165 | List: |
| References | |
| PROJECT-678A NUDOCS 8808010167 | |
| Download: ML20151H163 (3) | |
Text
- _ _ _ _ _ _ _ _ _ _ _ _
July 21, 1933 Project No. 678 Robert C. Nelson, Lt. Col., USAF Chief Nuclear Power and Sources Division Directorate of Nuclear Surety Kirtland Air Force Base, New Mexico 87117
Dear Lt. Col. Nelson:
SUBJECT:
CRITICALITY MONITOR REQUIREMENTS During the briefing I attended at McClellan Air Force Base on May 26, 1988 the question of criticality accident requirements pursuant to 10 CFR 70.24 was discussed.
This section of the regulations applies to dry fuel storage at TRIGA facilities if the licensee is authorized to possess contained uranium-235 in excess of 700 grams.
However, 10 CFR 70.24(d) allows a licensee to apply for an exemption from having a monitorir,g system if good cause exists.
In general, the licensee I
would show that the fuel eierents or fueled experirnents are stored such that the geonetry of the storage facility wculd not allow criticality under any i'
circumstances including accidental introduction of nederator into the storage j
facility.
1 ANSI /ANS-15.1-1982, "The Developrent of Technical Specifications for Research Reactors", Section 5.4, recuires that k-effective for fissionable raterial storage be no greater than 0.0 for all conditions of ecderation and reflection using light water.
Attached is an example of an exemption package.
If I can provide any more t
detail please call re at (301) 492-1121 or FTS 492-1121.
1 Sincerely.
criginal signed by Alexander Adams, Jr., Project Manager Standardization and Non-Pcwer Reacter Project Directorate i
Division of Reactor Projects - !!!, IV.
J Y and Special Projects Office of Nuclear Reactor Regulation
Attachment:
As stated O
l 5O DISTRIBUTION:
Central TIIe LRubenstein h
'N h
f <]ff NRC PDR EJordan i
PDNSP F.eading BGrires y'
h EHylton ACRS (10)
,, p, [p f AAdams.
OGC-Rockville
)
@T PDSNP*
FDSN@
AD:PDSFP l
U og EHylton AAdats:cw Chiller
$u 07/12/S8 07/W/88 07/'J /83 l
- See previouse concurrence i
l July 31, 1988 l
Project No. 678 Robert C. Nelson. Lt. Col., USAT Chief Nuclear Power and Sources l
Division Directorate of huclear Surety Kirtland Air Force Base, New Mexico 87117 r
Dear Lt. Col. Nelson
SUBJECT:
CRITICALITY HONITOR REQUIREFEhTS 1
During the briefing I attended at McClellan Air Force Base on May 26, 1988 the i
cuestion of criticality accident requirements purgdant to 10 CFR 70.24 was 4
ciscussed. This section of the regulation appli t to dry fuel storage at f
'l TRIGA facilities if the licensee is authorized to possess contained r
uranium-235 in excess of 700 grams, However. 10 CFR 70.24(d) allows a licenser to apply for an exe n tion from having a nonitering system if good causVexists.
In general, t1e licensee would shew that the fuel eier.ents or fueled experiments are stored such that the geometry of the storage facility 40uld not allow criticality under any circunstances including accidental,t'troduction of nederator into the storage n
facility.
e ANSI /ANS-15.1-1982, "The Develep/
ent of Technical Specifications fer Research Reacters" Section 5.4, requires that k-effective for fissionable material storege be no greater than 049 for all cenditions of rederation and reflecticn using light water.
/
Attachedisanexampleof[(anexemptionpackage.
If I can provide any more
[
detail please call no at 301) 492-1121 or FTS 492-1121.
l Sincerely.
I
/
Alexander Adans, Jr., Project Manager Standardizatien and Non-Pcwer l
Reacter Project Directorate l
Division of Reactor Projects - !!!, IV, Y and Special Projects Office of Nuclear Reactor Regulation Attachrent: I As stated i
D!$11t!BUTION:
Central File LRubenstein NRC POR EJordan i
PDNSP Reading BGrires i
EHylton ACRS (10)
AAdams OGC-Rockville FDS' PDSNP AD:PD5hP EQlton AAdams:cw tummT& C % Ib 074'/88 07/ /88 07/ /88
'\\
UNITED 8TAf t8 NUCLEAR REGULATORY COMMIS810N e
l 6
1 wAswwoes, p. c. aoses
- g*...,)
July 21, 1988 l
Project No. 678 l
l l
Robert C. Nelson, Lt. Col., USAF Chief. Nuclear Power and Sources Division Directorate of Nuclear Surety Kirtland Air Force Base, New Mexico 87117
Dear Lt. Col. Nelsen:
)
SUBJECT:
CR!TICALITY MON! TOR REQUIREMENTS 1
l During the briefing ! attended at McClellan Air Force Base on May 26,191tB the question of criticality accident requirements pursuant to 10 CFR 70.24 was t
l discussed. This section of the regulations applies to dry fuel storage at TRIGA facilities if the licensee is authorized to possess contained i
i uranium-235 in excess of 700 grams.
]
However, 10 CFR 70.24(d) allows a licensee to apply for an exemption from j
j 1
having a monitoring system if good cause exists.
In general, the licensee j
would show that the fuel elements or fueled experiments are stored such that the geometry of the storage facility would not allow criticality under any l
circumstances including accidental introduction of moderator into the storage j
facility.
t i
j ANS!/ANS-15.1 1982, "The Developrent of Technical Specifications for Research Reactors", Section 5.4, requires that k-effective for fissionable material storage be no greater than 0.9 for all conditions of moderation and reflection I
]
using light water.
Attached is an example of an exemption package.
If I can provide any more detail please call me at (301) 492-1121 or FTS 492 1121.
I i
j Sincerely, dWb
$2 * /
Alexander Adams, Jr.,
rof t Manager Standardization and NonP er l
. Reactor Project Dirte rate Division of Reactor Pr ects - !!!, 11, V and Special Projects l
Office of Nuclear Reactor Regulation l
Attachment:
j As stated j
l i
i
- - --