NFPA 25 Paragraph 11.3.2.3

Where discharge from the system discharge devices would create a hazardous condition or conflict with local requirements, an approved alternate method to achieve full flow conditions shall be permitted. (Full Flow Test to be achieved through a Test Header and tests shall be conducted to ensure that the foam-water system(s) responds as designed, both automatically and manually.)

When tested wet or alternative method nozzles should always be checked on:

NFPA 25 Paragraph 11.3.2.6.1 The discharge patterns from all of the open spray devices shall be observed to ensure that patterns are not impeded by;

• plugged discharge devices and to ensure that;
• discharge devices are correctly positioned and that;
• obstructions do not prevent discharge patterns from covering surfaces to be protected.

NFPA 25 Paragraph 11.3.2.6.2

Where obstructions occur, the piping and discharge devices shall be cleaned and the system retested.

Dry Deluge Testing is also according to the following NFPA Standards.

NFPA 25 Paragraph 11.3.2.3

Where discharge from the system discharge devices would create a hazardous condition or conflict with local requirements, an approved alternate method to achieve full flow conditions shall be permitted. (Full Flow Test to be achieved through a Test Header and tests shall be conducted to ensure that the foam-water system(s) responds as designed, both automatically and manually.)

When tested wet or alternative method nozzles should always be checked on:

NFPA 25 Paragraph 11.3.2.6.1

The discharge patterns from all of the open spray devices shall be observed to ensure that patterns are not impeded by;

• plugged discharge devices and to ensure that;
• discharge devices are correctly positioned and that;
• obstructions do not prevent discharge patterns from covering surfaces to be protected.

NFPA 25 Paragraph 11.3.2.6.2

Where obstructions occur, the piping and discharge devices shall be cleaned and the system retested.