BS 421:2010 pdf download – Protective gloves against ionizing radiation and radioactive contamination
The lead equivalent thickness shall always be linked with the nature and energy of the radiation used duringtests (see Clauses 6 and 7).
4.4 Glove integrity
The purpose of the glove to protect against ionizing radiation or radioactive contamination is to isolate the userfrom the potential hazard.This is only possible if the integrity of the glove is proven.
Gloves shall pass an integrity test: the integrity shall comply with the requirements of EN 374-1:2003,5.2.
4.5 Mechanical requirements
For each protective glove against radioactive contamination and/or ionizing radiation，the obtainedperformance level shall be indicated in the information supplied by the manufacturer for the followingmechanical tests:
-abrasion resistance;
—blade cut resistance;
-tearing resistance;
-puncture resistance.
According to the test methods described in EN 388:2003, at least level 1 shall be reached for one of the fourmechanical properties. For special purposes, dexterity is the most important parameter, in this case no level ofprotection of EN 388 has to be reached, but the following sentence shall be written in the user notice of thegloves: “This gloves does not protect against mechanical risks.”
4.6 Chemical requirements
lf required, the chemicals properties of the gloves shall be determined following the requirements defined inEN 374-1;2003,5.3.1.The test method for permeation is described in EN 374-3.
Two possibilities are acceptable:
The glove fulfills EN 374-1:2003,5.3.2; In this case the pictogram of EN 374-1:2003, Figure 1 shall beused.
The chemicals to be tested are defined taking into account the use of the glove at the work place. Iin thiscase the pictogram of EN 374-1:2003,Figure 2 shall be used.
4.7 Specific requirements for gloves for containment enclosures
4.7.1General requirement for gloves for containment enclosuresGloves for containment enclosures shall comply with 4.1,4.2,4.3 and 4.4.NOTE Annex A provides an optional test method for water vapour permeability.
4.7.2Design for gloves for containment enclosures4.7.2.1General
The glove shall comply with the relevant requirements defined in ISO 11933-2.
When the metallic element distribution is not uniform over the glove，the manufacturer shal mark theequipment and provide the information accordingly (see Clauses 6 and 7).
4.7.2.2Glove sizing and dimensions
In the case of gloves to be mounted in containment enclosures，prescriptions of lSo 11933-1 andISO 11933-2 shall be followed.
Gloves used in containment enclosures are often used with under gloves. The user will have to take intoaccount this parameter for the choice of an adapted size of equipment.
NOTE ISO 11933-1 and lS0 11933-2 detail a list of characteristics of standardized gloves, glove ports, support rings,cell rings,etc.
4.7.2.3 Accessories used with gloves
4.7.2.3.1 Gloves equipped with a support ring
ln a few permanent containment enclosures, gloves can be equipped with a support ring. The support ring isconsidered as an integral part of the glove, and the whole equipment shall be tested according to the air leaktest using a test bench equipped with a cell ring (see 4.7.3).
4.7.2.3.2Sleeve
Gloves mounted in permanent containment enclosures can be used with an intermediary sleeve， fixedbetween the glove and the containment enclosure. This sleeve is not considered as an integral part of theglove. t shall fufill all requirements of this European Standard and shall be compatible with the glove used.The way of fixation between the glove and the sleeve and between the sleeve and the containment enclosureshall be detailed in the information supplied by the manufacturers.
The sleeve shall be tested with one compatible glove as regards the integrity using the air leak test (see 4.7.3)Such an assemblage shall resist to a tensile strength test of 100 N according to 5.4.
4.7.3Specific integrity test for gloves for containment enclosures
The integrity of gloves used in containment enclosures shall be tested by the air leak test described in 5.2.The pressure shall not decrease by more than half the initial pressure. The initial pressure shall be mentionedin the instructions supplied by the manufacturer if it is different from 3 000 Pa.