Chemical Processing Department Monthly Report: July 1957 Page: 23 of 107
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the month's plutonium production, while the uranium losses repre-
sented 0.20% of the uranium production.
The iodine 131 emission to the Redox stack during July averaged
0.56 curies per day of dissolver operation with metal cooling
periods of 107 to 127 days. Evidences of iodine break-through
on the B-3 and A-3 reactors occurred on 7-11-57 and 7-15-57
respectively. In each case, reactor regeneration procedures
were immediately initiated. Although the A-3 reactor was re-
generated twice and the B-3 reactor three times, these two
continued to be the main source of the iodine emitted through-
out the month. Since regeneration procedures have not been
effective, installation of replacement units is now being
The processing shutdown which occurred on 7-21-57 and ex-
tended through 7-25-57, due to the plugging of the backcycle
jumpers and the subsequent failure of the D-14 pump, was
delayed approximately 16 hours as a result of a total power
loss to the 60-T Crane. The crane failure occurred when the
current collector wheels jumped off the trolley cable and
placed a severe bend in one of the trolley cables.
The second shipment of Chalk River fuel elements was recei-
ved on plant site on 7-31-57. At month end plans were being
formulated to process this material through the C dissolver.
2. Equipment Experience
a. F-2 Tube Bundle
On 7-8-57, a leak developed in the left hand tube
bundle of the F-2 concentrator. Since operating con-
ditions made it undesirable to immediately change the
tube bundle the defective unit was blanked out and
concentration effected by using only the right hand tube
bundle. The failed bundle will be replaced during the
next scheduled shutdown.
b. H-4 Coil Bundle
On 7-8-57, a rise in the Jordan instrument which mon-
itors the condensate and cooling water from all boil up
vessels in the 202-S Bldg. indicated a leak in the H-4
coil bundle. The unit was replaced on 7-11-57 without
loss of production time and without incident.
c. H-4 eight Factor Jumper
The H-4 weight factor jumper failed due to an in-cell
leak on 7-17-57. Replacement was made on 7-19-57 and
subsequent operation has been satisfactory.
DEC LAS SIID
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Hanford Atomic Products Operation. Chemical Processing Department. Chemical Processing Department Monthly Report: July 1957, report, August 22, 1957; Richland, Washington. (https://digital.library.unt.edu/ark:/67531/metadc1312193/m1/23/: accessed May 26, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.