Learn More > Safety valves INAIL certified
Safety valves INAIL certified
Who is the INAIL institution and what are its tasks?
The INAIL, acronym for National Institute for Insurance against Workplace Accidents, is an Italian notified body dedicated to safeguarding the health and safety of workers. Founded with the aim of preventing accidents in the workplace and providing assistance in case of incidents, INAIL plays a crucial role in promoting safe and protected work environments.
Among its various tasks, INAIL is responsible for regulating safety valves, fundamental elements in many fields. These devices, along with boilers, tanks, refrigeration systems, and other structures, are designed to contain fluids or gases at high pressure. Given the potential hazards of safety valves, it is essential that they are regulated and properly maintained to ensure the safety of workers.
INAIL performs several tasks related to safety valves. Firstly, it is responsible for defining standards and guidelines for the safe use of such devices. These standards are essential to ensure that safety valves meet high safety standards and minimize the risk of workplace accidents.
INAIL is also involved in the verification of safety valves in Italy. Before a valve can be used in plant, it must undergo a thorough evaluation to ensure its compliance with safety regulations. Only valves that successfully pass these tests receive approval from INAIL and can be safely used in the workplace.
Finally, INAIL provides support and consultancy to industrial operators to ensure the proper use and maintenance of safety valves. Through training and information programs, the institute helps to disseminate best practices and promote a culture of workplace safety.
INAIL, periodic verification and commissioning
Italian Ministerial Decree number 329 dated December 1, 2004, known as D.M. 329/04, establishes guidelines for the periodic verification and commissioning of pressure equipment, including safety devices such as safety valves.
Upon commissioning of the plant, the user of systems equipped with safety valves in Italy is required to demonstrate the correct functioning of such valves through a verification of their functionality in the presence of an INAIL inspector. This verification can be conducted through tests on a test bench, simulations, or, if not compromising for operating conditions, through on-site execution. In the specific case of safety valves, the verification may involve confirming the set pressure indicated by the manufacturer and certified.
Do you want to learn more about set pressure? Click here!
The same functionality verification must be carried out in the presence of an INAIL inspector during the periodic inspections of the system and its pressure equipment in italy.
The periodic requalification of safety valves in Italy is regulated according to the scheme outlined in the tables below, extracted from Annexes A and B of Ministerial Decree No. 329 dated 01/12/2004 (D.M. 329/04). The frequency of these checks should be adjusted if the manufacturer of the equipment, in the user manual and maintenance manual, indicates intervention intervals shorter than those indicated in the aforementioned table, with particular regard to the issue of corrosion and erosion or other actions that may compromise the structural stability of the equipment over time. Subject to the time limits specified in the table and those suggested by the manufacturer, subsequent checks should be carried out within the deadlines resulting from the results of the last performed check.
Nuova General Instruments does not indicate stricter terms than those indicated below regarding the periodic verification of its safety valves.
Annex A - Ministerial Decree No. 329 dated 01/12/2004 (D.M. 329/04)
| SYSYTEM WITH FLUID GROUP 1 (PED) | |
|---|---|
| IN-PRESSURE EQUIPMENT | INSPECTION LIMITS AND FREQUENCIES |
| Tanks/Assemblies classified in categories III and IV, recipients containing unstable gases belonging to categories I to IV, ovens for chemical and related industries, generators and recipients for liquids overheated other than water. Including safety valves. (n.d.r.) | Inspection frequency:
|
| Tanks/Assemblies classified in I and IIcategory | Inspection frequency:
|
| Pipelines for gases, vapors, and overheated liquids classified in categories I, II, and III | Inspection frequency:
|
| Pipelines for liquids classified in categories I, II, and III | Inspection frequency:
|
| Tanks for liquids classified in categories I, II, and III | Inspection frequency:
|
Annex B - Ministerial Decree No. 329 dated 01/12/2004 (D.M. 329/04)
| SYSYTEM WITH FLUID GROUP 2 (PED) | |
|---|---|
| IN-PRESSURE EQUIPMENT | INSPECTION LIMITS AND FREQUENCIES |
| Tanks/assemblies containing compressed, liquefied, and dissolved gases or vapors other than water vapor classified in categories III and IV, and recipients of water vapor and overheated water belonging to categories I to IV. Including safety valves. Including safety valves. (n.d.r.) | Inspection frequency:
|
| Tanks/assemblies containing compressed, liquefied, and dissolved gases or vapors other than water vapor classified in categories I and II | Inspection frequency:
|
| Steam generator | Inspection frequency:
|
| Pipelines for gases, vapors, and overheated liquids classified in category III | Inspection frequency for TS<350°C:
|
| Pipelines for liquids | No inspection |
| Tank for liquids | No inspection |
| Cylinders for respiratory devices | Subsea use:
|
| Portable fire extinguishers | Inspection frequency:
|
Nuova General Instruments safety valves INAIL certified
Nuova General Instruments can provide safety valves INAIL certified, which means that the safety valves will undergo testing at our facility by an INAIL inspector who will issue a test report attesting to the outcome of the verification. Since the safety valve will already have been verified by the INAIL entity, it can be immediately used for commissioning the plant or as a replacement valve instead of a safety valve pending periodic verification.
If there is no intention to replace the safety valve pending periodic verification, it will be possible to send the safety valve to our facility to undergo recertification with INAIL bench testing and thus obtain a completely refurbished product accompanied by an INAIL test report.
