{"operation":"document","citation":"49 CFR 178.802","title":"Preparation of fiberboard IBCs for testing.","source_type":"regulation","agency":"Pipeline and Hazardous Materials Safety Administration","status":"current","official":true,"published_on":null,"effective_on":"2026-08-18","summary":"(a) Fiberboard IBCs and composite IBCs with fiberboard outer packagings must be conditioned for at least 24 hours in an atmosphere maintained:\n\n(1) At 50 percent ±2 percent relative humidity, and at a temperature of 23° ±2 °C (73 °F ±4 °F); or\n\n(2) At 65 percent ±2 percent relative humidity, and at ","machine_formats":{"json":"https://regulus.evalyn.ai/document/49-cfr-178-802.json","markdown":"https://regulus.evalyn.ai/document/49-cfr-178-802.md"},"app_url":"https://regulus.evalyn.ai/document/49-cfr-178-802","source_url":"https://www.ecfr.gov/on/2026-08-18/title-49/section-178.802","body":"(a) Fiberboard IBCs and composite IBCs with fiberboard outer packagings must be conditioned for at least 24 hours in an atmosphere maintained:\n\n(1) At 50 percent ±2 percent relative humidity, and at a temperature of 23° ±2 °C (73 °F ±4 °F); or\n\n(2) At 65 percent ±2 percent relative humidity, and at a temperature of 20° ±2 °C (68 °F ±4 °F), or 27 °C ±2 °C (81 °F ±4 °F).\n\n(b) Average values for temperature and humidity must fall within the limits in paragraph (a) of this section. Short-term fluctuations and measurement limitations may cause individual measurements to vary by up to ±5 percent relative humidity without significant impairment of test reproducibility.\n\n(c) For purposes of periodic design requalification only, fiberboard IBCs or composite IBCs with fiberboard outer packagings may be at ambient conditions.\n\n[Amdt. 178-103, 59 FR 38074, July 26, 1994, as amended at 66 FR 45386, Aug. 28, 2001]","truncated":false,"body_characters":913}