Explanation:
While it's important for the team to retreat promptly in a fire scenario, extinguishing the fire before retreating may not necessarily result in disqualification as long as all required team functions are performed in the designated areas. Safety protocols should be followed, and necessary actions taken to ensure the safety of all team members.
Explanation:
Even if the direction of the fan cannot be changed, it is still important for teams to accurately indicate whether the fan is blowing air into the mine or exhausting air out of the mine. This information helps in understanding the ventilation flow within the mine and is essential for safety and rescue operations.
Explanation:
According to mine safety regulations, the presence of a gas placard indicates the extent of the gas. Since there is no placard at the unsafe roof, the gas is not assumed to extend beyond that point. Therefore, timbers can be used to secure the unsafe roof without the assumption that gas extends through it.
Explanation:
The orientation of the FPA symbol on the map does not affect its functionality. The primary concern is to accurately mark its location for navigation purposes, regardless of the direction of travel.
Explanation:
While the legal requirement set by 30 CFR Part 49 mandates a minimum of 6 team members, the National Rules for Mine Rescue Contests stipulate a minimum of 7 team members to compete. Therefore, a team with only 6 members would not meet the eligibility criteria for the National Contest.
Explanation:
For safety and accountability, mine rescue teams must set their own timbers rather than relying on previously set ones. This ensures that the timbers are properly installed and meet safety standards, reducing the risk of roof collapse or other hazards during rescue operations.
Explanation:
Holding a curtain up to a rib corner with an unsafe roof running across it is generally not allowed due to safety concerns. However, if the unsafe roof has been properly supported and secured by the team, then holding a curtain up to the rib corner can be considered safe. It's essential to ensure the structural integrity of the roof before implementing any safety measures.
Explanation:
Strapping down patients' arms may hinder their ability to remove their mask or CareVent quickly in case of an emergency. Therefore, it is generally recommended not to strap down patients' arms during rescue operations to ensure their safety and ability to respond effectively in emergency situations.
Explanation:
Smoke can potentially return in the mine if ventilation changes are not effectively controlled or if there are unforeseen circumstances. Increased smoke levels would indicate this issue to the mine rescue team, highlighting the importance of constant monitoring and adjustment of ventilation systems to maintain safe working conditions.
Explanation:
By exploring each heading sequentially from left to right, the mine rescue team ensures systematic coverage of the mine and minimizes the risk of missing any areas. This approach aligns with standard mine rescue procedures and ensures thorough exploration of the mine.
Explanation:
If there is a barricade 7 feet into the entry ahead and no irrespirable atmosphere immediately outby it, the team can airlock and proceed into the entry. As long as the barricade is secure and there are no immediate hazards, it is safe for the team to advance into the entry.
