1.1 This guide may be used for the control and maintenance of industrial radiographs and unexposed films used for industrial radiography. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. Note 1 - For information purposes, refer to Terminology E1316. The terms stated therein, however, are not specifically referenced in the text of this document. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.