Mandatory Safety Certification
임직원 모두 하나 된 마음으로 신뢰가 기본인 회사를 만들어 갑니다.
This is a system that aims to contribute to the prevention of industrial accidents by ensuring that products that meet or exceed safety certification standards are manufactured, distributed, and used, thereby ensuring fundamental safety and reliability, by requiring that a certification mark be attached/sold to products that meet or exceed safety certification standards in the production of protective equipment and protective gear for hazardous machinery/equipment.
Rupture Disc used to protect pressure vessels from overpressure or vacuum caused by gas or vapor (However, it shall not be used for releasing liquid pressure or when the set burst pressure is less than 0.1 MPag.)
Conduct burst test at the same temperature as the operating environment (room temperature burst test)
If specifications submitted at the time of certification application differ, a separate certification for the same type is required
Imported products are also required to use fully certified products
Occupational Safety and Health Act
Enforcement Decree of the Occupational Safety and Health Act
Enforcement Rules of the Occupational Safety and Health Act
Notice on Mandatory Safety Certification Standards for Safety Devices
Notice on Reporting of Safety Certification and Voluntary Safety Confirmation
※ Violation: imprisonment of up to 3 years or a fine of up to 20 million KRW
Burst test
Set Pressure |
Less than 0.3 MPag |
0.3 MPag or more |
|---|---|---|
Burst Pressure Tolerance |
±0.015 MPag |
±5% |
Leak Test
Category |
Pressure Holding Time |
|
|---|---|---|
Nominal Diameter of Rupture Disc (mm) |
50 or less |
1 minute |
Over 50 up to 100 |
2 minutes |
|
Over 100 |
3 minutes |
|
※ Leak test conducted at 90% of set pressure
※ Flat/Slotted Type leak test conducted at 50% of set pressure
Classification by Structure
Dome Type Rupture Disc (C) |
Single Type (O) |
|---|---|
Composite Type (C) |
|
Scored or Slotted Type (S) |
|
Reverse Dome Type Rupture Disc (R) |
Scored or Shear Type (S) |
Knife Blade Type (K) |
|
Flat Type Rupture Disc (F) |
Replaceable Graphite Rupture Disc (R) |
Mono Block Graphite Rupture Disc (M) |
|
Slotted Type Rupture Disc (S) |
|
Other Structures (X) |
Rupture discs manufactured with unique characteristics different from above types |
Classification by Nominal Diameter
Nominal Diameter Classification |
I |
II |
III |
IV |
V |
|---|---|---|---|---|---|
Nominal Diameter Range (mm) |
25 or less |
Over 25 up to 50 |
Over 50 up to 80 |
Over 80 up to 100 |
Over 100 |
Classification by Nominal Pressure
Nominal Pressure Classification |
1 |
2 |
5 |
10 |
21 |
22 |
|---|---|---|---|---|---|---|
Burst Pressure Range (MPag) |
1 or less |
Over 1 up to 3 |
Over 3 up to 5 |
Over 5 up to 10 |
Over 10 up to 21 |
Over 21 |
Marking of Types
