NPORS Suction Excavator Training (N021)
A suction excavator is a vacuum unit, not a digger. It lifts spoil off a service instead of cutting towards it, which is why utilities, rail and highways clients increasingly insist on one near live apparatus. Five days for a novice covers the unit, the hose and the dig, on your own machine, run when your work allows.
Why candidates choose Acadame
What makes our N021 Suction Excavator different
About this course
The NPORS N021 Suction Excavator category is the operator card for vacuum excavation units: a lorry mounted or trailer mounted machine with a powerful fan or positive displacement blower, a boom mounted suction hose and a spoil tank, used to lift soil off buried apparatus without a blade or a bucket ever touching it. It is a different discipline from mechanical excavation and the card reflects that.
Five days for a novice covers the unit as a unit: the chassis and the stabilisers, the blower, the filtration and cyclone separation, the boom and hose controls, the spoil tank and its tipping arrangement, the lance and cutting nozzles, the noise and the dust, and the pre operational checks and defect reporting the handbook requires. Operators also cover moving and setting the machine up on a live highway or a rail lineside, which is where most of these units spend their working life.
The rest is the excavation. Reading the drawings, scanning and marking, setting the exclusion zone, assessing the ground and choosing the right nozzle and pressure, then taking spoil off in layers until the service is exposed and clean. Then the parts people forget: skip and tank management, disposing of the arisings properly, reinstating and leaving the site safe, and shutting the unit down with the hose stowed, the nozzle secured and the machine isolated.
- The unit: chassis, stabilisers, blower or fan, filtration and separation, boom, hose, nozzles and spoil tank
- Pre operational and running checks, filter condition, defect reporting and what the handbook requires
- Travelling to and setting up in a restricted working area, including on a live highway or lineside
- Establishing a safe working zone and exclusion zone, and controlling people on foot and traffic around it
- Locating and proving buried services and working to HSE guidance HSG47 before and during the dig
- Excavating exploratory holes and trenches, exposing services cleanly, handling the spoil and reinstating
How completing this course helps you
- The NPORS N021 Suction Excavator category, registered with NPORS and recognised on sites nationally
- The Red Trained Operator card, or the Blue Competent Operator card where the operator holds the relevant NVQ
- Operators who can satisfy a client specification that requires vacuum excavation near live apparatus
- A consistent standard across a fleet, which is what a utility, a rail client or an insurer asks to see
Who should attend?
Utility contractors working near live gas, water, electricity and telecoms apparatus, rail and highways contractors, drainage and civils firms running vacuum units, and plant hire companies supplying suction excavators with an operator. It suits drivers moving onto the unit and groundworkers coming off mechanical excavation, and there is a route for operators who have been running one for years without a card.
Entry requirements. You should be at least eighteen, fit enough for the work including hose handling and working at the back of a unit for long periods, and able to follow spoken and written English for the theory test, though an interpreter can be arranged on request. A driving entitlement for the chassis matters where the operator also drives the unit on the road, and we will ask. For the version of the card that carries the CSCS logo you need a CITB Health, Safety and Environment test pass at Operatives level taken within the last two years, which we book for you. NPORS also recommend that anyone doing basic training has had at least seven hours of health, safety, environment and induction training first.
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Course content
What you will cover
Classroom on the unit, the law and buried services, then the bulk of the week on the machine excavating and exposing services, with testing at the end.
The unit, the law and what is under the ground
- Health and Safety at Work etc. Act 1974 and PUWER 1998 as they apply to vacuum excavation
- Excavation duties under the Construction (Design and Management) Regulations 2015, including inspection by a competent person
- Avoiding danger from underground services, following HSE guidance HSG47: plans, locators, trial holes and safe digging practice
- The manufacturer's handbook and the operator's responsibilities under it
- How the unit works: blower or fan, airflow, filtration and cyclone separation, boom, hose and nozzles
- Setting up: ground bearing, stabilisers, the working zone and the exclusion zone
- Spoil handling, tank tipping, waste classification and disposal
- Site hazards: overhead lines, traffic management, people on foot, noise and dust
Excavating by vacuum
- Operator safety and observation checks, isolation and confirming the unit is serviceable
- Travelling to the work area and manoeuvring through a restricted space
- Setting up to excavate: walking the area, establishing the exclusion zone, assessing the ground and preparing the unit
- Excavating exploratory holes or a trench and exposing buried services without damaging them
- Managing the skip or tank and disposing of the excavated material correctly away from the work area
- Shutdown: hose and lanyard stowed, nozzle secured, engine off and the unit isolated
Method of assessment
How the N021 suction excavator test works
NPORS assess the category by theory test and practical test. The published NPORS practical for this category runs to a maximum of two hours and asks the operator either to excavate two exploratory holes or to excavate a trench, exposing at least three different types of buried service.
1. Enquiry and group
Tell us how many operators, where, and what unit they run. Three sit the novice course with one instructor and one unit, four are allowed on the experienced worker test. We quote per group, because the length follows who is on it.
2. Pre course check
We sort who is a novice, who is an experienced worker and who is due a refresher, check whether the CSCS logo version of the card is needed and book the CITB test if it is, then take the details NPORS need to register.
3. Training
Classroom on the unit, the law and buried services, then the bulk of the week on the machine, ideally on your own ground with your own services to expose.
4. Theory test
The NPORS theory test covering legislation, the unit and its systems, setting up, service avoidance, spoil handling and safe operating practice.
5. Practical test
Within two hours: checks and observations, travelling through a restricted space, setting up, excavating exploratory holes or a trench exposing at least three types of service, disposing of the material and shutting down.
6. Registration and card
We register the pass with NPORS and apply for the card, traditional or with the CSCS logo depending on where your operators work.
After the course
The rest of the safe digging job
A suction excavator earns its keep because it does not cut towards a service. That only holds if the service has been located first, and the locating is a separate skill with its own category. The N304 Cable Avoidance Tool course covers using a locator and a signal generator properly, sweeping in the right modes and proving what the plans say, which is what stops an exploratory hole being dug in the wrong place.
The other thing a vacuum unit usually shares a job with is a mechanical excavator, working outside the safe digging zone while the suction unit works inside it. Where the two run together, and where people on foot are in the same area, an excavation marshal keeps them apart. And the trench the unit opens is still an excavation: if anyone enters it, it has to be supported and inspected like any other.
- N304 Cable Avoidance Tool for locating and proving services before the hose goes near them
- N027 Excavation Marshal and Banksperson where plant and people share the same ground
- N049 Shoring, install, inspect and remove, where anyone enters the excavation
- CITB Health, Safety and Environment test booked with us where the CSCS logo version of the card is needed
Build your course
Who is coming, and how many
We do not run these to a timetable. The course is built around your people: how experienced they are and how many of them there are, which is what sets the length and the cost. Pick the mix and we will come back with a date and a price.
The course builder needs JavaScript. Without it, tell us how many people and what experience they have and we will price it up.
N021 Suction Excavator FAQs
A vacuum unit, usually lorry mounted, with a large fan or positive displacement blower, a boom mounted suction hose and a spoil tank. It lifts soil off buried apparatus by air rather than cutting it with a bucket or a blade, so it can expose a live cable or a gas main without touching it.
No. A 360 excavator category does not cover a suction excavator and it never has. The machine, the risks and the technique are different, which is why NPORS give it its own category and its own test.
Five days for a novice, with three candidates to one instructor and one unit. An operator already running a suction excavator normally takes the shorter experienced worker route, where NPORS allow four candidates, and the refresher is shorter again. We confirm the length when we quote.
The published NPORS practical runs to a maximum of two hours. The operator checks and sets up the unit, travels through a restricted space, establishes an exclusion zone, then either digs two exploratory holes or excavates a trench, exposing at least three different types of buried service, disposes of the material correctly and shuts the unit down properly.
For the NPORS category itself, no. If the same person drives the unit on the public road then the licence entitlement for that chassis is a separate legal requirement, and we will ask about it so nobody is trained into a job they cannot legally do.
Yes, and it is usually better. Operators train on the unit they run and the ground they work, and nobody loses days travelling. We need a suitable area for the practical with services that can safely be exposed, which we agree with you beforehand.
The Red Trained Operator card, which NPORS issue for two years, or the Blue Competent Operator card valid five years where the operator holds the relevant NVQ. The CSCS logo version of either needs a current CITB Health, Safety and Environment test. Where the work is not on construction sites, the traditional NPORS card may suit better.
Three on the novice course and the refresher, four on the experienced worker test. Larger groups get sequenced across more than one course, because the ratio is what gives each operator real time on the hose.
NPORS courses are priced per course, not per person. What you are paying for is the instructor, the registered tester and the machine time, so the figure turns on four things: the category, which route your operators need (novice, experienced, conversion or refresher), how many people are coming, and whether we run it on your site or at one of ours. It is also why a squad works out considerably cheaper per head than sending operators out one at a time. Use the course builder on this page: tell it who is coming and it works out how many days the course takes and how many times it has to run, which is what the price is built from. Then ask us and you will get a figure for that exact group rather than a list price with conditions attached.
We run NPORS courses across the UK rather than out of one fixed centre, and for most categories the better answer is that we come to you: your operators are assessed on the machine they will be using anyway, nobody loses a day travelling, and for a group it costs less. If you would rather come to us, we have centres at Trent House in Stoke, Pride Park in Derby, Europa House in Manchester and Kingsway House in Liverpool. Tell us where the work is and we will say honestly which way round makes more sense.
There is no fixed timetable to wait for. NPORS courses here are run to order, which means the dates are built around your programme rather than ours, and a single operator or a full squad can normally be booked in within a couple of weeks. If you have a card about to expire or a start date to hit, say so when you enquire and we will work to it.
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