RRFM 2009 Transactions - European Nuclear Society

the period of time when the racks were immersed was asked to the reactor operator. This
information is valuable due to its great influence on corrosion.
Figure 1 and 2 shows the position of the racks in the reactor pool and in the storage pool of
the RECH-1 research reactor.
Fig 1. Rack located in the reactor pool.
Fig 2. Racks located in the storage
pool.
3. Results
3.1. Coupons analysis
The results obtained from coupons immersed in the RECH-1 research reactor shown that the
flow rate of water in the pool is an important factor on corrosion due to the sediments could
be removed from the faces of the coupons depending on the speed of the water. Stagnant
water increases the corrosion degradation by local pitting.
Fig 3. Outer face of Al
1050 coupon after 3 y
in the reactor pool
Fig 4. Outer face Al
6061 coupon after 3 y
in the reactor pool.
Fig 5. Outer face of Al 1050
pre-oxidized and crashed
after 3 y in the reactor pool.
Fig 6. Outer face Al
1050 coupon after 3 y in
the storage pool.
Fig 7. Outer face Al
6061 coupon after 3 y in
the storage pool.
Fig 8. Outer face Al 1050,
pre-oxidized and crashed
after 3 y in the storage pool.
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