Page 69 - 20250602 EEA QM Edition 6.0

Quality Requirements Edition 6.0 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 one basket per rotor ring
enameller and the end user performed after pressurizing the basket shall be tested
complete with elements but without the
for gas-gas heaters: a visual examination should be carried pack being welded
out for defects such as chipping, cracking or spalling
(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 with once per ring
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 %
2
4.36 package pressure 5000 - 8000 (± 1000) kg/m profile related 100 %

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