(1) If it is accepted, or certified, or listed, or labeled, or otherwise determined to be safe by a nationally recognized testing laboratory recognized pursuant to 29 CFR Sec. 1910.7; or
(2) With respect to an installation or equipment of a kind that no nationally recognized testing laboratory accepts, certifies, lists, labels, or determines to be safe, the Division of Occupational Safety and Health will approve materials, devices, appliances, installations, arrangement or methods of construction intended for use under these orders, provided necessary safety requirements are met for quality, strength, effectiveness, fire resistance, durability, and the protection of life and health.