(a) Safety helmets to prevent the worker from any dangers due to flying or falling objects
| Ordinance on Industrial Safety and Hygiene | |||
| article 247 | concrete form shoring assembling work | article 517 | steel assembling work |
|---|---|---|---|
| article 360 | natural ground excavation work | article 539 | work near a building berth, at high-rise structure construction site |
| article 366 | open-cut excavation work | article 566 | scaffolding work |
| article 375 | shoring work | crane etc. safety regulation | |
| article 389 | tunnel shoring etc. excavation work | 33-2-3 | crane assembling and demolition work |
| article 404 | excavation work for quarrying | 118-2-3 | derricks assembling and demolition work |
| article 412 | protection against dangers due to collapse of natural ground etc. | 153-2-1 | assembling or demolition work of outdoor hoistway tower or guide rail support tower |
| article 464 | stevedoring work | ||
| article 484 | afforestation work | ||
| article 497 | log conveying work by wooden sleigh or snow sledge | ||
| article 516 | forestry cableway work | 191-2-3 | assembling and demolition work for construction work lift |
When using insulating safety helmets for flying or falling objects and falling, the structure shall comply with their standards.
(ｂ) Safety Helmets to Prevent Dangers from Workers due to Falling
| Ordinance on Industrial Safety and Hygiene | |
| article 151 | loading and unloading cargoes on a truck having the maximum loading capacity of 5 tons or more (including the work roping and sheeting) |
|---|---|
| article 435 | work on a cargo pile (limited to the work at the height of 2m or more from the floor surface) |
(ｃ) Safety Helmets to Prevent Dangers from Workers due to Electricity (insulating safety helmets)
| Ordinance on Industrial Safety and Hygiene | |
| article 341 |
high voltage live line work |
|---|---|
| article 346 |
low voltage live line work |
(ｄ) National Standard of Insulating Protective Equipment
| Ordinance on Industrial Safety and Hygiene | |
| article 351 |
periodic voluntary inspection for insulating protective equipment shall be conducted |
|---|---|
in accordance with Industrial Safety and Health Act
(1) Penetrability Resistance Test
| classification | test method | performance |
| Flying or Falling Object |
|
The tip of the punch shall not come into contact. |
|---|---|---|
| Falling | Put the helmet over the ring tip of the test jig, and the points of fall shall be front, back and side of the helmet respectively, then the helmet shall be struck from heights of 0.6m using a conical punch weighing 1.8 kg. | Vertical distance between the top of the ring tip of the test jig and the lower-most-position dent of the inner side of the helmet (if the tip of conical punch passes through the hat, vertical distance between the ring of the test jig and the tip of the conical punch) shall be 15 mm or less. |
(2) Impact Absorption Test pretreatment condition : When conducting impact absorption test, following pretreatment shall be done using finished product
| classification | method |
high-temperature processing |
Storing a helmet at temperature of 48°C or more and 52°C or less for 2 consecutive hours. |
|---|---|
low-temperature processing |
Storing a helmet at temperature of -12°C or more and -8°C or less for 2 consecutive hours. |
| Immersion treatment | Storing a helmet in the water at temperature of 20°C or more and 30°C or less for 4 consecutive hours. |
| classification | test method | performance |
| Safety helmets to prevent? dangers from flying or foreign object |
|
Impact load of the false (dummy) head shall be 4.90kn (500kg) or less. |
|---|---|---|
| Safety helmets to prevent dangers from falling |
|
|
(3) Withstand Voltage Test Followings are specific safety guidelines for insulating safety helmets.
| type of insulating protective equipment | voltage performance | |
| for the use under the condition of AC voltage 300-600 | each type shall withstand the electric voltage for 1 minute. | 3,000 volt |
| for the use under the condition of AC voltage 600-3500 or less or for the use under the condition of DC voltage 750-3500 or less | 12,000volt | |
| for the use under the condition of voltage 3500-7000 or less | 20,000volt | |
Structure of insulating safety helmets shall not be scooted over easily nor dropped off. In addition, the regulation provides that the performance shall be suitable for the purpose of the usage and the quality shall be consistent without any defects such as crack, bubble, or blowhole.
