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Ammonia Plant,
PRELIMINARY OPERATING MANUAL

Thermocouples, which are to monitor the temperatures during dryout, should be checked for proper location and operability.
In some cases, it will be necessary to install temporary thermocouples if the normal couples are situated too far away from critical refractory areas.
For example, it is not uncommon for the ***normal flue gas thermocouple temperature points to start in the convection section.

Затрудняет это: normal flue gas thermocouple temperature points to start

Спасибо.