ASTM F479 specifies the in-service care, inspection, and testing procedures for rubber insulating blankets. It ensures ongoing safety by detailing proper cleaning, storage, visual checks, and electrical retesting, helping maintain the reliability and effectiveness of blankets used in electrical hazard protection.
This specification outlines the essential procedures for the in-service care, inspection, and testing of rubber insulating blankets. It provides guidance to ensure these critical safety devices maintain their protective capabilities throughout their service life.
The standard covers procedures for visual inspection, cleaning, storage, and periodic electrical retesting of blankets. It also provides criteria for removing blankets from service if they exhibit damage or fail retesting. Adherence to ASTM F479 is vital for ensuring the continued integrity and effectiveness of insulating blankets in the field, contributing significantly to electrical worker safety.
