STN EN ISO 21904-4
| Name: | STN EN ISO 21904-4 |
| Validity: | Valid |
| Number of pages: | 22 |
| Language: |
EN
|
| Paper: | 14,10€ |
| Electronic version |
a) Only read (without ability to print and copy)
12,69€ b) Without ability to print, with ability to copy (printscreen) 14,10€ c) With ability to print and copy (printscreen) 18,33€ |
| Slovak title | Ochrana zdravia a bezpečnosť pri zváraní a príbuzných procesoch. Zariadenia na zachytávanie a separáciu plynných splodín pri zváraní. Časť 4: Určovanie minimálneho prietoku vzduchu separátorov (ISO 21904-4: 2020) |
| English title | Health and safety in welding and allied processes - Equipment for capture and separation of welding fume - Part 4: Determination of the minimum air volume flow rate of capture devices (ISO 21904-4:2020) |
| Release Date: | 01. 09. 2020 |
| Date of withdrawal: | |
| ICS: | 13.100, 25.160.30 |
| Sorting character/National clasification code | 05 0607 |
| Level of incorporation: | idt EN ISO 21904-4:2020, idt ISO 21904-4:2020 |
| Official Journal | 08/20 |
| Amendments | |
| Replaced by: | |
| Repleces: | STN EN ISO 15012-2:2009-07 (05 0607) |
| Note in Official Journal: | |
| Subject of the standard: | This document specifies two methods for establishing the minimum air volume flow rate. One method is dedicated for use with captor hoods, nozzles and slot nozzles with a ratio of slot length to hose diameter of 8:1 or less. The other method is dedicated for use with on-gun extraction devices. These methods are not applicable to down draught tables. |
| Preview: | Náhľad normy (PDF) |