ANSI ISEA Z87.1 pdf free download
ANSI ISEA Z87.1 pdf free download.American National Standard for Occupational and Educational Personal Eye and Face Protection Devices.
7.1.4.6 Prescription Lens Mounting Qualification
When tested in accordance with Section 9.11 and Section 9.12 complete devices using representative test lenses meeting the requirements of Section 7.1.4.5 and having the thinnest lens thickness to be used by the manufacturer, in no case less than 2.0 mm (0.079 in.), shall be capable of resisting high mass and high velocity impact. For each type of lens retention system offered for sale, one set of ten (10) complete devices shall be tested, (six (6) high velocity and four (4) high mass). Failure of any one device as a result of t tests shall constitute failure for a set.
Lens retention systems are:
• Full rim eyewires that require bevel designs like a “safety V bevel and other lens bevels” for metal frames.
• Full rim eyewires that require bevel designs like a “safety V bevel and other lens bevels” for plastic frames.
• Grooved metal frame style (T-Eyewire).
• Grooved semi rimless with half metal rim and suspension cord mountings.
• Three-piece rimless drill mount.
• Any mounting that is configured differently than described above to secure the lens and that is design/process dependent such that it requires a different lens beveling process or mounting technique.
Manufacturers shall also conduct the test if it incorporates frames with different lens retention systems into the product offering.
This type testing shall be performed when any substantive change in production occurs that could affect the ability of the device to pass the tests as described in Sections 9.11 and 9.12.
7.1.4.7 Devices with Lift Fronts Complete devices with lift fronts shall meet the applicable requirements of Section 7.1 with the lift front in the “up” position.
7.2 Optical Radiation Protector Requirements
The following requirements apply to protectors for which filtration of optical radiation is claimed including welding, ultraviolet, infrared and visible light filters. Claimed transmittance characteristics of a protector shall be marked in accordance with Tables 7, 8, 9 and 10 using a letter marking and a scale/shade number indicated the ability to filter optical radiation. Special purpose filters shall meet the requirements of Table 11.
7.2.1 Protectors with Clear Lenses When tested in accordance with Section 9.2, clear piano, reader, magnifier and prescription lenses shall have a luminous transmission of not less than 85%. Representative test lenses of piano power may be substituted for prescription, reader or magnifier lenses in this test.
7.2.2 Protectors Providing Filtration of Optical Radiation
7.2.2.1 Filter Lenses
7.2.1.1.1 Transmission Requirements
When tested in accordance with Section 9.2, pIano, reader, magnifier and prescription lenses that are marked as filtering optical radiation shall comply with requirements of Table 7 (welding filters), Table 8 (ultraviolet filters), Table 9 (infrared filters), Table 10 (visible light filters) and/or Table 11 (special purpose filters). Special purpose filters may or may not comply with Tables 8, 9 or 10, but shall comply with the requirements of Table 11 for special purposes.
Lenses shall meet the claimed transmittance criteria throughout their entire geometry apart from 5 mm (0.20 in.) from the lens edge. Changes in transmittance due to thickness variation in decentered/ side protective wrap around lenses are permitted so long as the variation in transmittance is not greater than one shade/scale number less than that claimed for the filter lens. Lenses shall be tested (at minimum) at points directly in front of each eye and at the thinnest thickness of the lens not within 5 mm (0.20 in.) from the lens edge.ANSI ISEA Z87.1 pdf download.
