How is detonating cord spliced or joined for use in blasting?

• A. By using screws
• B. By employing knots, plastic connectors, or tape
• C. By melting the ends together
• D. By tying with wire

Answer: (B)

Detonating cord is spliced or joined by employing knots, plastic connectors, or tape to ensure a secure and reliable connection for blasting operations. This method is effective because it allows for a proper alignment of the explosive components, maintaining the integrity of the detonating cord and preventing premature detonation or malfunction during use.

Using knots creates a secure and tight connection, while plastic connectors and tape offer additional options that can provide a good seal and support for the cord ends, ensuring that the explosive energy is transmitted correctly along the length of the cord. Employing these methods also takes into account safety considerations essential in blasting operations, as they help maintain the stability and reliability of the connection under varying conditions.

While other methods of connection might seem viable, they do not sufficiently meet the necessary safety or effectiveness standards required in blasting practices. For instance, melting the ends together could lead to weak points in the splice and is not a standard practice for connecting detonating cord. Similarly, tying with wire or using screws could introduce risks or reduce the effectiveness of the connection due to variations in strength and material compatibility. Therefore, the recommended methods that include knots and connectors are crucial for effective and safe use in blasting.