ISO 23407-2021 pdf free download – Protective gloves against thermal risks (heat and/or fire).
4 General requirements4.1General
Where protection against other than thermal risk is needed the specific standard shall be used.
The protective gloves according to this document shall meet all the applicable requirements ofISO 21420:2020.
When parts of the glove are made from dissimilar materials, these dissimilar materials shall be testedseparately, except if another way is specified in the standard.The results of each material shall complywith the requirements given in 4.5.
ln those circumstances when the sample size is significantly larger than the particular part of the gloveor hands protective equipment against thermal risks being tested, then the manufacturer shall berequested to supply samples of identical material.
4.2Cleaning
All tests required in this document shall be performed on unused gloves or hand protective equipmentunless otherwise specified.
lf care instructions are provided, the relevant tests shall be performed on the gloves or hand protectiveequipment, before and after they have been subjected to the procedure described in the care instruction,including the maximum recommended number of cleaning cycles. The levels of performance and themechanical strength (see 4.3) are given by the lowest of the 2 results obtained before and after cleaning.NOTE Manufacturer’s instructions typically indicate one or several of the various methods and processes ofISO 6330,ISO 15797 or equivalent as standardized processes for cleaning.
4.3Mechanical strength
The glove material(s) shall be tested according to 6.8.The tear strength resistance shall have at least avalue of 10 N.
4.4Sizes and dimensions4.4.1Gloves
The gloves shall correspond to the relevant requirements of ISO 21420:2020,5.1.
lf according to the intended use, the hand protector needs to be taken off quickly, the protective glovesof performance levels 3 and 4 as specified in 4.5.2 to 4.5.7 shall be manufactured so that they can easilybe removed in case of an emergency.The test shall be performed according to EN 659:2003 +A1:2008,3.15 using the same requirement.This property shall be justified and explained in a warning includedin the manufacturer’s information.
The removal test shall be carried out only in the dry state if the manufacturer’s information states thatthe glove is not intended for use in wet conditions.
lf protection against metal splashes as described in 4.5.6 and/or 4.5.7 is claimed, the minimal length ofthe glove shall correspond to the requirements of Table 1.
4.4.2Hand protective equipment
Hand protective equipment against thermal risks shall have a sufficient dimension to fully cover thepart of the hand intended to be protected against thermal risk. The property shall be verified by visualinspection.
The manufacturer information shall contain precise information about how to use the hand protectiveequipment and which part of the hand is protected.
4.5 Thermal performances
4.5.1 General
For each of the following test methods the defined performance level depends upon the intended fieldof application of the glove or hand protective equipment.Only the tests which are relevant to the risksin the intended end-use application shall be carried out.
For the choice of relevant testing, examples are given in Annex B.4.5.2 Limited flame spread
Using test method 6.2 the glove and other hand protective equipment, as well as all outer materialsshall correspond to the requirements of Table 2.Surface of the innermost layer of the glove shall beinspected, it shall show no sign of melting.No hole shall appear on all layers of the tested area. Theseam shall not come apart after the ignition time.
For high thermal resistant gloves (level 3 or 4), all outer materials different to the finger area shall betested according to lS0 15025:201i6, method A and comply at least with level 3 of Table 2.Seams andouter accessories with a surface area greater than 10 cm2shall also be tested.ISO 23407 pdf download.