DSHW-1995-004281 - 0901a06880157841

T-Aj^u^^ RECEIVED
//l^CO^C'^t^ CORPORATION
STRATEGIC OPERATIONS MAR 1 6 1995
Oivisiofi of Sciid ?, !k?5r^nu3 Wjjto
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13 March 1995
V000:FY95:99
Dennis R, Downs, Executive Secretary
State of Utah
Department of Environmental Quality
Division of Solid and Hazardous Waste
288 North 1460 West
P, O. Box 144880
Salt Lake City, Utah 84114-4880
Dear Mr, Downs,
Subject: Request for Additional Storage Time Under Thiokol's Temporary
Authorization Number MOD95-00764, EPA #UTD009081357
Thiokol was recently issued temporary authorization to store hazardous materials at
our T-93/T-94 facilities for a longer length of time than allowed under our RD«feD
permit. Our first full scale nitrogen washout began on February 24, 1995 at the T-93
facility. As you may be aware, an unexplained flash occurred during this first
washout attempt. No injuries occurred and only minor damage to the equipment
resulted. Despite the minor severity of this flash, Thiokol is concerned and is
currently performing a detailed investigation as to the cause of this event.
In the interest of preserving evidence that might help us determine the cause of this
flash, we need to store the hydrolysis tank containing the washed out propellant for
longer than our temporary authorization allows. At this point in time, we are unsure
how long this investigation will take because our approach is not yet fully defined,
Thiokol requests approval to store the hydrolysis tank in the bay for an additional 7
days beyond our 21 day allowance, and on the hydrolysis pad for an additional 7 days
beyond our 7 days allowed in our temporary authorization. We will endeavor to
complete this investigation as quickly as possible so that additional storage time will
be kept to minimum,
lfyou have questions or need any clarification, please contact Gene Curtis at 863-
4479,
FO. Box 689, Brigham City, UT 84302-0689 (SOV 863-3517
D, R, Downs
13 March 1995
Page 2
"I certify under penalty of law that this document and all attachments were
prepared under my direction or supervision in accordance with a system
design to assure that qualified persoimel properly gather and evaluate the
information submitted. Based on my inquiry of the person or persons who
manage the system, or those persons directly responsible for gathering the
information, the information submitted is, to the best of my knowledge and
belief, true, accurate, and com.plete. I am aware that there are significant
penalties for submitting false information, including the possibility of fines
and imprisonment of knowing violations,"
J, D. Thompson, Director
Safety, Enviroimiental and Support
Utah DLV
cc: G. L. Mower
A, K, Lemon