NONEL® LP 1.1B

NONEL® nonelectric delay detonator LP units consist of a length of yellow shock tube with a High Strength detonator attached to one end and the other end sealed. A blue J-hook, with pad-printed delay period, is affixed near the sealed end, providing easy means of connection to detonating cord. Easy-to-read, color-coded delay tags display the delay number and nominal firing time prominently.

 

NONEL LP units are designed to provide in-hole delay time for underground (non-coal) and special construction blasting applications that require long delay times to improve relief and fragmentation (such as drift development, raise and shaft work, as well as slope and tunnel blast rounds). They are typically used with detonating cord but can also be used with NONEL EZTL™ and NONEL TD detonators for additional timing flexibility.

 

Application Recommendations

 

For detailed application recommendations, ALWAYS request a copy of Dyno Nobel’s Product Manual: NONEL® and PRIMACORD® from your Dyno Nobel representative.

• ALWAYS use the plastic J-hook when using a detonating cord trunkline to tie-in NONEL LP nonelectric delay detonators. A minimum 3 g/m (18 gr/ft) detonating cord trunkline is required for use with the J-hook.

• ALWAYS ensure the shock tube is connected at right angles to the detonating cord trunkline and that the shock tube leads returning to the hole collar do not cross over or lay near any detonating cord trunkline. If the detonating cord touches the shock tube or is closer than 6 inches (15 cm), the shock tube may be damaged and misfires may result.

• ALWAYS connect detonating cord using approved knots and tight connections. Place detonating cord hook-ups in closed loops and use with cross-ties.

• NEVER put more than 20 NONEL LP delays per bunch. A minimum 5 g/m (25 gr/ft) detonating cord is required for bunch blasting.

• NEVER cut or trim seals from the shock tube of a NONEL LP delay. If shock tubing is cut or is suspected of being cut or damaged during loading, ALWAYS reprime the borehole using a new unit of the same delay period.

• NEVER drive any equipment over the shock tube or detonating cord. Whenever charging from a maneuverable basket, platform or boom, ALWAYS make sure that no shock tube or detonating cord is entangled or can become entangled.

• ALWAYS make sure that no shock tube or detonating cord can be pinched between the basket, platform or boom and the face, ribs, back or floor. Rupturing or damaging shock tube or detonating cord may cause misfires.

• Where NONEL LP detonator lead lengths permit, bunch blasting provides the most efficient means of hooking up rounds in drifts, tunnels, shafts and raises.