Glossary


glossary

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M

Millisecond (MS) Series

Delay detonator series with relatively short (commonly 25MS) delays between adjacent numbers.

MS Detonators are designed for in-hole use to initiate a primer and are generally of #12 / #8* strength which is a base charge of about 1 gram total.

Entry link: Millisecond (MS) Series

Millisecond Connector

A device incorporating a detonator delay arrangement used with detonating cord.

Entry link: Millisecond Connector

Millisecond Connector (MSC)

Signal tube device used to provide a delay in a detonating cord trunkline. Capable of firing in two directions.

Entry link: Millisecond Connector (MSC)

Minimum Primer

The minimum primer is the explosives mass of a primer required to reliably initiate the product in question.

The minimum primer is related to sensitivity, the more sensitive an explosives the smaller the minimum primer.

Minimum primer may be specified in terms of detonator strength typically #12, #8, #6 or in terms of the mass of explosives (TNT or Pentolite) required for reliable detonation.

For example it could be stated for a certain bulk explosive in a 102mm diameter hole the minimum primer required is 150 grams of Pentolite.

Entry link: Minimum Primer

Misfire

A charge or part of a charge which has failed to explode or ignite.

Entry link: Misfire

Mobile Mixing Unit

A mobile unit (usually a vehicle) used for the manufacture of explosives.

DBS MPU 350

Entry link: Mobile Mixing Unit

Mound

A barricade intended to intercept horizontal and low angle debris from an explosion.

Entry link: Mound

Multi meter

A multimeter is an electrical test instrument design to measure resistance, voltage and low levels of current (milliamps) in an electrical circuit.

Note: Standard multi meters can supply sufficent voltage to fire electric detonators and must not be used to test circuits containing detonators.

simpson meter

 

Entry link: Multi meter

Multimeter

A multimeter or a multitester, also known as a VOM (volt-ohm-milliammeter), is an electronic measuring instrument that combines several measurement functions in one unit. A typical multimeter can measure voltage, current, and resistance. Analog multimeters use a microammeter with a moving pointer to display readings.

Multimeters should never be used to test the electrical properties of explosive circuits due to the potential for accidental initiation.

Multimeter

See also Megger tester

Entry link: Multimeter

N

National Criminal History Check

A criminal history check conducted on an applicant through the Police Service. This check covers all states and territories.

Entry link: National Criminal History Check


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