Plant and Equipment Operations Flashcards

What certification must a specialist plant operator hold to operate a 360-degree excavator on a UK construction site?

Answer: A valid CPCS or NPORS card for the specific category of machine being operated

Operators of construction plant in the UK must hold a valid CPCS (Construction Plant Competence Scheme) or NPORS (National Plant Operators Registration Scheme) card for the specific category of machine. For 360-degree excavators, this is CPCS Category A59. The card must be current and the operator must also hold a valid CSCS-affiliated card for site access.

Before a specialist contractor starts using any item of plant equipment at the beginning of a shift, what checks must be carried out?

Answer: A documented pre-use inspection covering safety-critical items including hydraulics, brakes, warning devices, guards, lights, and structural integrity

PUWER 1998 requires that work equipment is maintained in a safe condition. Pre-use checks must cover all safety-critical systems including hydraulic hoses and connections, brakes, steering, warning devices (reversing alarms, beacons), mirrors, guards, lights, tyres/tracks, cab safety (ROPS/FOPS), and any visible structural damage. Results must be recorded.

Under LOLER 1998, how often must a specialist lifting accessory (slings, shackles, eyebolts) undergo thorough examination?

Answer: At least every 6 months

The Lifting Operations and Lifting Equipment Regulations 1998 require that lifting accessories (slings, shackles, chains, eyebolts) undergo thorough examination by a competent person at least every 6 months. Lifting machines (cranes, hoists) require examination every 12 months, or every 6 months if used to lift people. A current report of thorough examination must be available on site.

A specialist supervisor is planning a lifting operation using a mobile crane near overhead power lines. What is the minimum safe clearance that must be maintained from power lines up to 33kV?

Answer: 6 metres (or 9 metres if voltage is unknown)

HSE guidance (GS6) specifies minimum safe clearances from overhead power lines. For lines up to 33kV, the minimum clearance is 6 metres from the nearest cable. If the voltage is unknown, a distance of 9 metres must be maintained. For lines over 33kV, the clearance increases to 15 metres. These distances account for cable sag and wind-induced movement.

What is the purpose of a Thorough Examination scheme for specialist plant and equipment under PUWER and LOLER?

Answer: To provide a systematic, independent assessment that the equipment remains safe for continued use, identifying defects before they cause harm

A Thorough Examination is a detailed, systematic inspection by a competent person (typically an insurance engineering surveyor or competent engineer) that goes beyond routine maintenance. It identifies defects, wear, or deterioration that could lead to danger, and results in a formal written report. Any defects posing an immediate risk must be reported to the HSE.

A specialist plant operator is required to use a ride-on roller near the edge of an excavation. What specific risk must be assessed and controlled?

Answer: The risk of ground collapse under the roller's weight, causing the machine and operator to fall into the excavation

Heavy plant operating near excavation edges poses a severe risk of ground collapse due to the machine's weight surcharging the unsupported ground. A safe working distance must be established based on the depth of the excavation, soil conditions, and machine weight. Physical stop blocks or bunds should prevent the machine from approaching the edge, and the excavation support may need to be upgraded.