Add punctuation: On the external side of the hydrant cabinet door panel is the Indoor hydrant safety sign in accordance with the PN92N0125601 Polish Standard and the conformance certificate number Hydrant operating instructions are placed in the top part of the door pane on the inside
A: On the external side of the hydrant cabinet door panel is the "Indoor hydrant" safety sign in accordance with the PN-92/N-01256/01 Polish Standard and the conformance certificate number. Hydrant operating instructions are placed in the top part of the door pane on the inside.

Add punctuation: The survey published in the online edition of Cancer a journal of the American Cancer Society consisted of 51 women each given a questionnaire three weeks after the surgery and again three months after theyd done the procedure
A: The survey, published in the online edition of Cancer, a journal of the American Cancer Society, consisted of 51 women, each given a questionnaire three weeks after the surgery, and again three months after they'd done the procedure.

Add punctuation: Every computer has sound files
A:
Every computer has sound files.