This standard is applicable to fire stops of various materials and construction. Cable-penetration fire stops are intended for use in fire-resistive barriers. Tests conducted in conformance with this standard will record the performance of fire stops during the test exposure. However@ this test shall not be used to determine the suitability of a fire stop for use after it is exposed to a fire. This standard also considers the resistance of a fire stop to an external force imposed by a hose stream or water spray. This standard shall not be used to determine the performance of a fire stop during actual fire conditions when subjected to additional forces@ such as failure of cable support systems and falling debris. The intent of this standard is to develop data to assist in determining the suitability of a fire stop for use where fire resistance is required. This standard should be used to measure and describe the response of the fire stop material under a set of controlled conditions but should not be used to describe or appraise the fire hazard or fire risk of that fire stop under the actual fire conditions. However@ the results of this test may be used as an element of a fire hazard assessment or a fire-risk assessment that takes into account all of the factors that are pertinent to a particular end use. 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. Purpose The purpose of this standard is to establish type tests to assure that cable-penetration fire stops meet the required fire rating.