All newly installed air-setting, hydraulic, and chemically bonded linings should be allowed to cure at the proper temperature before initial heating for a minimum of:
The cure period before initiating the dryout process is a critical phase of installation:
“Newly installed air-setting, hydraulic, and chemically bonded materials shall be allowed to cure for a minimum of 24 hours at 60 °F (16 °C) or above prior to initial heating.”
— API TR 980, Section 6.2.1
This condition ensures chemical bonding processes are complete before exposure to thermal stress.
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