I have seen ovens that you store 60# coils of wire in. I think it was FEMA that requires FCAW exposure limits just like a SMAW LOW-HY rod. Oh, I better quote the paragraph cuz I might screw it up:)
Excerpt from FEMA 353 Part I 3.3.3 Electrode Storage and Exposure Limits
FCAW electrodes shall be received and stored in the original, undamaged manufacturer packaging, until ready for use. Electrodes in packages that have had the external plastic wrapping damaged shall not be used for welds in Seismic Weld Demand Catagory A or B...................
...........In lieu of testing, when welding is suspended for more than 8 hrs., electrodes shall be removed from the machines and stored in an electrode wire oven maintained at a temperature between 250F and 550F, or as recommended by the mfg. Electrodes not consumed within 24hrs of accumulated exposure outside closed or heated storage shall not be used for welds in Seismic Weld Demand Catagory A or B. Electrode spools shall be identified to facilitate monitoring of total atmostpheric exposure time. FCAW electrodes that have been exposed for periods exceeding an accumulated 24hrs. may be dried if mfg's testing and recommendations show that drying is effective at removing moisture and restoring electrodes to their designed diffusible hydrogen level.
Also in paragraph 2.4.1.2 Hydrogen Level
It states that "For welded joints as Seismic Weld Demand Catagory A or B, the filler metals, as supplied by the mfg, shall meet the requirements for H16 (16 ml diffusible hydrogen per 100 grams of deposited weld metal)....."
just for more info on the subject,
John Wright