NZQA registered unit standard
21815 version 3
Page 1 of 4
Title
Install roof and side supports using a powered mobile drill rig in an
underground operation
Level
4
Credits
6
Purpose
People credited with this unit standard are able to: describe the
elements and characteristics of a powered mobile drill rig;
describe safety systems and conditions for operating a
powered mobile drill rig; install roof and sides support; select
drilling equipment, support type, and anchors types, and carry
out drilling and support operations; and park and shut down a
powered mobile drill rig, report defects, and complete
documentation, in an underground operation.
Classification
Extractive Industries > Underground Extraction
Available grade
Achieved
Entry information
Critical health and
safety prerequisites
Unit 7146, Demonstrate basic knowledge and ability required to
work in an underground operation, or demonstrate equivalent
knowledge and skills.
Explanatory notes
1
Performance of the outcomes of this unit standard must comply with the following:
Health and Safety in Employment Act 1992 (HSE);
Health and Safety in Employment Regulations 1995;
Health and Safety in Employment (Mining Operations and Quarrying Operations)
Regulations 2013;
approved codes of practice issued pursuant to the HSE Act.
2
Any new, amended, or replacement Acts, regulations, standards, codes of practice,
guidelines, or authority requirements or conditions affecting this unit standard will take
precedence for assessment purposes, pending review of this unit standard.
3
Definitions
Company procedures mean the documented methods for performing work activities
and include health and safety, operational, environmental, and quality management
requirements. They may refer to legislation, regulations, guidelines, standard
operating procedures, manuals, codes of practice, or policy statements.
Industry best practice may be documented in management plans, control plans,
company procedures, managers’ rules, occupational health and safety policy,
NZ Motor Industry Training Organisation
(Incorporated) (MITO)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
21815 version 3
Page 2 of 4
industry guidelines, codes of practice, manufacturers’ instructions, and safe working
and/or job procedures (or equivalent).
Site support rules are put in place by the mine manager and are the minimum
standard to which supports are made. These are site or mine specific.
4
An underground operation includes extractive or tunnelling operations.
Outcomes and evidence requirements
Outcome 1
Describe the elements and characteristics of a powered mobile drill rig in an underground
operation.
Evidence requirements
1.1
The operational characteristics and performance of a powered mobile drill rig
are described in terms of its use in an underground operation.
Range
may include but is not limited to – safety features, instruments,
controls, operating procedures, set-up, pre-start system,
operational constraints, shut-down procedures.
Outcome 2
Describe safety systems and conditions for operating a powered mobile drill rig in an
underground operation.
Evidence requirements
2.1
The safety systems and conditions for the operation of a powered mobile drill rig
are described in accordance with industry best practice and company
procedures.
Range
systems may include but are not limited to – compressed air,
electrical services, hydraulics, survey sights, interlocks, sensors;
conditions may include but are not limited to – water supply, roof
and sides security, operating gradient, floor conditions, drill rig
speed, lighting, accessibility, ventilation controls, roadway
conditions, gas make and management, frictional ignition, dust
controls, explosion risk zones (ERZs).
Outcome 3
Install roof and sides support in an underground operation.
Evidence requirements
3.1
Equipment and materials are prepared for use for installation in accordance with
industry best practice and company procedures.
NZ Motor Industry Training Organisation
(Incorporated) (MITO)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
3.2
The ground support system is installed in accordance with industry best practice
and company procedures.
Range
3.3
21815 version 3
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may include but is not limited to – friction bolts, expansion shells,
resin bonded bolts, chemical anchors, multistrand bolts, cable
bolts, strap and mesh.
Risks during installation are identified and controlled in accordance with the site
risk assessment procedures and company procedures.
Range
may include but is not limited to – unseen voids, water, gas,
working from under supported roof, geological weaknesses, loose
or soft ground, strata separation, abutment loading, insitu
stresses.
Outcome 4
Select drilling equipment, support type, and anchors types, and carry out drilling and
support operations.
Evidence requirements
4.1
Drill bits, rods for drilling and support type, and anchor type for support
installation are selected to suit the ground conditions.
4.2
Machine pre-shift and pre-start checks are completed, and defects corrected or
reported in accordance with industry best practice and company procedures.
4.3
Machine is set-up and operated in accordance with industry best practice,
manufacturer specifications, and company procedures.
Range
4.4
may include but is not limited to – chocks, brakes, instruments,
controls, boom alignment, drill mode.
The drilling and support installation operations are carried out in accordance
with company procedures and site ground support plan.
Range
may include but is not limited to – scaling down, trimming, cleaning
up working area, drilling, bolting, meshing.
Outcome 5
Park and shut down a powered mobile drill rig, report defects, and complete
documentation.
Evidence requirements
5.1
Machine is parked and shut down in accordance with industry best practice and
company procedures.
5.2
Defects are listed in accordance with industry best practice and company
procedures.
NZ Motor Industry Training Organisation
(Incorporated) (MITO)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
5.3
21815 version 3
Page 4 of 4
Documentation is completed in accordance with industry best practice and
company procedures.
Replacement information
Planned review date
This unit standard replaced unit standard 7153.
31 December 2019
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
25 October 2005
Rollover and
Revision
2
16 July 2010
Review
3
18 June 2015
31 December 2017
31 December 2017
N/A
Consent and Moderation Requirements (CMR) reference
0114
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies
to this standard are outlined in the Consent and Moderation Requirements (CMR). The
CMR also includes useful information about special requirements for organisations wishing
to develop education and training programmes, such as minimum qualifications for tutors
and assessors, and special resource requirements.
Comments on this unit standard
Please contact the NZ Motor Industry Training Organisation (Incorporated) (MITO)
info@mito.org.nz if you wish to suggest changes to the content of this unit standard.
NZ Motor Industry Training Organisation
(Incorporated) (MITO)
SSB Code 101542
 New Zealand Qualifications Authority 2016