{"operation":"document","citation":"49 CFR 193.2135","title":"Expansion or contraction.","source_type":"regulation","agency":"Pipeline and Hazardous Materials Safety Administration","status":"historical","official":true,"published_on":null,"effective_on":"1999-10-01","summary":"Each operator shall consider the amount of contraction and expansion of each component during operating and environmental thermal cycling and shall:\n\n(a) Provide components that operate without detrimental stress or restriction of movement, within each component and between components, caused by con","machine_formats":{"json":"https://regulus.evalyn.ai/document/49-cfr-193-2135.json","markdown":"https://regulus.evalyn.ai/document/49-cfr-193-2135.md"},"app_url":"https://regulus.evalyn.ai/document/49-cfr-193-2135","source_url":"https://www.govinfo.gov/app/details/CFR-1999-title49-vol3/CFR-1999-title49-vol3-sec193-2135","body":"Each operator shall consider the amount of contraction and expansion of each component during operating and environmental thermal cycling and shall:\n\n(a) Provide components that operate without detrimental stress or restriction of movement, within each component and between components, caused by contraction and expansion; and\n\n(b) Prevent ice buildup from detrimentally restricting the movement of components caused by contraction and expansion.","truncated":false,"body_characters":447}