What do you need to know about a ventilation system?
What do you need to know about a ventilation system?
Ventilation systems can be categorised depending on a combination of supply of fresh air required, extraction of stale and contaminated air and circulation and distribution of air in an amount calculated to suit the room’s use and occupancy level.
What are the requirements for air ventilating in mines?
There are specific requirements under r. 10.52 of the Mines Safety and Inspection Regulations 1995 relating to ventilating air requirements for diesel unit operations. Where practicable, wet drilling should be used to minimise dust generation. Otherwise drilling machines are to be fitted with effective collection devices.
What are the problems with series series ventilation?
Many deep and extensive underground mines tend to use series ventilation circuits. The main problem with series or parallel-series circuits is progressive contamination of the air by recirculation from secondary ventilation system returns.
What do you need to know about underground ventilation?
The use of secondary ventilation fans and ducting is normally required, most commonly in a ‘forced air’ configuration, but pressure or exhaust overlap or total exhaust may also be used. Underground ventilation (metalliferrous mines) – guideline – 199 K b
When do you know someone is on a ventilator?
The use of a ventilator is also common when someone is under anesthesia during general surgery. A patient may not even know they were connected to a ventilator after the completion of the surgery or medical procedure. 4. Risks of Being on a Ventilator
What do you need to know about an airflow indicator?
The airflow indicator must indicate simply and clearly when the airflow is adequate. The simplest indicator is usually a manometer. (Also see ‘LEV instrumentation’ in Chapter 7.)” Page 63 : 228 : “Users of LEV systems, particularly the operators at LEV hoods, must be able to tell that the hood airflow is still adequate to control exposure.
Is it legal to have an airflow indicator in an extraction?
Although the HSE provides a good reference tool, especially within the ‘local exhaust ventilation’ section of their site they don’t really provide clear instruction on the subject : “there isn’t a specific legal requirement to have airflow indicators fitted to an extraction.
What are the risks of being on a ventilator?
Patients on ventilators run a higher risk of developing pneumonia because of bacteria that enters through the breathing tube. It can also make it difficult for them to cough and clear airways of irritants that can cause infections. 5. Eating While on a Ventilator
