Page 69 - QRedition5.0 062021

Quality Requirements Edition 5.0 European Enamel Association

D. Package
Test method Requirements Remarks Frequency
3.5 visual assessment for air-gas heaters requirements in consultation with the the visual examination shall be performed one basket per rotor ring shall
enameller and the end user after pressurizing the basket complete be tested
for gas-gas heaters: a visual examination should be carried with elements but without the pack being
out for defects such as chipping, cracking or spalling welded
(see Clause 3). Special attention shall be given on the contact
points between the corrugated and undulated plates
(the 2nd, the middle and the last but one pair of panels in the
basket)
4.20 edge covering for air-gas heaters requirements in consultation once per ring
with the enameller and the end user
for gas-gas heaters the edge covering shall be determined
on three pairs (corrugated + undulated) of panels per
basket (the second, the middle and the last but one pair
of panels in the basket) and there shall be an overall edge

covering of ≥ 95 %
4.36 package pressure 5000 - 8000 (± 1000) kg/m 2 profile related 100 %

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