SR163 NGET CDM Practice Questions – Set 1

Results

Congratulations – You Passed! 🎉

You’ve demonstrated a good understanding of CDM requirements and how they apply to National Grid Electricity Transmission projects.

Working safely and compliantly on NGET projects requires a clear understanding of roles, responsibilities, documentation, and the practical application of CDM principles. This result shows you’re heading in the right direction.

Want to build on your knowledge and confidence even further?

Our CDM Awareness & National Grid Supplier Requirements (SR/163) course provides practical guidance on applying CDM 2015 requirements within National Grid projects.

Find out more here:
CDM Awareness & National Grid Supplier Requirements (SR/163) Course

Not Quite This Time 👍

CDM and National Grid requirements can be challenging, especially when applying them to real project situations.

This quiz is designed to highlight areas where your knowledge may need a little more work. Take some time to review the topics you found difficult and have another go; you might be surprised how quickly your score improves.

Looking to strengthen your understanding of CDM on National Grid projects?

Our CDM Awareness & National Grid Supplier Requirements (SR/163) course covers key responsibilities, documentation, compliance requirements, and practical application to help you work confidently and safely.

Find out more here:
CDM Awareness & National Grid Supplier Requirements (SR/163) Course

#1. What is the primary purpose of NG/ET/SR163, Management of Works?

To define the technical design requirements for all NGET electrical equipment

To establish the minimum requirements for managing construction sites for NGET

To replace the Construction (Design and Management) Regulations 2015 on NGET projects

To define the commercial payment arrangements between NGET and its contractors

#2. Which statement best describes the main construction-phase responsibility of a Principal Contractor under NG/ET/SR163?

To monitor only the work carried out by its directly employed workforce

To manage technical quality while NGET manages construction health and safety

To plan, manage and monitor the construction phase and coordinate health and safety matters

To review contractor documentation without becoming involved in site coordination

#3. Which information should be incorporated into the Construction Phase Plan under NG/ET/SR163?

The roles, responsibilities, authorities and duties of the contractor’s project team

Only the names and contact details of senior project managers

The commercial rates agreed with each subcontractor

Only those responsibilities that are not already included in the construction contract

#4. When should the proposed Contractor Representative or Principal Contractor Representative normally be submitted for acceptance?

At the mobilisation meeting

Within two weeks before site mobilisation

When the first high-risk activity is identified

A minimum of six weeks before mobilisation

#5. What should normally happen if the approved Contractor Representative or Principal Contractor Representative is unexpectedly unavailable?

Work can continue if the Project Manager is available by telephone

No work should take place without an approved representative in position, so approved cover should be arranged

The most experienced supervisor on site automatically assumes the role

NGET assumes responsibility for managing construction work until the representative returns

#6. How should Pre-Construction Information be used on an NGET project?

It should be retained by the Client and issued only when a contractor requests a specific document

It should be provided after mobilisation so that it reflects the final site arrangements

It should be provided as soon as practicable and used to support the development of the Construction Phase Plan

It should contain only information relating to hazards created by operational high-voltage equipment

#7. When should the Construction Phase Plan normally be provided to the Client Representative for acceptance?

A minimum of six weeks before the Works commence at site

At the Pre-Site Start Meeting, regardless of when construction is due to begin

Within 21 days after the construction site has been established

Before the first subcontractor begins work, but not necessarily before site mobilisation

#8. What is the main purpose of the Health and Safety File?

To provide evidence that every contractor completed a site induction

To record the daily health and safety performance of the construction site

To retain every risk assessment and method statement used during construction

To provide information needed for future construction, maintenance and alteration works

#9. Which arrangement most accurately reflects NGET requirements for temporary works?

A Temporary Works Coordinator is required only where temporary works remain in place after project completion

A competent Temporary Works Coordinator and Temporary Works Supervisor should be appointed before the relevant work begins

The Principal Designer automatically becomes the Temporary Works Coordinator

Temporary works supplied by a specialist contractor do not require coordination by the Principal Contractor

#10. What time should normally be provided to the NGET Project Supervisor before work takes place?

Seven days to approve all contractor risk assessments

Fourteen days to rewrite any contractor method statement considered unsuitable

At least 21 days to review the relevant risk assessments and method statements

Six weeks to formally authorise every task described within the Construction Phase Plan

#11. NGET directly appoints a specialist contractor to carry out construction work within an area controlled by the Principal Contractor. Which statement is correct?

NGET must manage the specialist contractor’s site activity because NGET made the commercial appointment

The specialist contractor can work under its own arrangements because there is no contract with the Principal Contractor

The Principal Contractor becomes responsible for discharging all of the specialist contractor’s individual CDM duties

The Principal Contractor must coordinate the activity within the construction phase, while the specialist contractor retains its own CDM duties and must cooperate fully with the PC

#12. Which statement correctly describes the relationship between a National Grid Safety Document and the Contractor’s construction safety arrangements?

The Safety Document provides Safety from the System, but it does not replace the Contractor’s responsibility for general safety and work controls

The Safety Document transfers responsibility for all construction risks to the NGET Senior Authorised Person

Once a Safety Document is issued, separate risk assessments and method statements are no longer required

The Safety Document applies only to NGET employees and does not affect contractor activities

#13. What is the correct process where work may require a National Grid Safety Document?

The Contractor should begin work under its own permit system while the Safety Document request is reviewed

The Client Representative decides which Safety Document is required without reference to the Senior Authorised Person

The request should normally be submitted 21 days in advance, with the Contractor or Principal Contractor assessing the RAMS before SAP review

The specialist contractor should apply directly to the SAP without involving the Principal Contractor

#14. Which statement best describes the establishment of a CDM demarcation zone?

It is established by the Principal Contractor without consultation once the site boundary has been fenced

It is jointly agreed, clearly defined and recorded, with arrangements established for control of the construction area

It applies only to areas containing live high-voltage equipment

It transfers ownership and all operational responsibility for NGET equipment to the Principal Contractor

#15. What should happen when the boundary of a CDM demarcation zone changes?

The change can be communicated verbally at the next toolbox talk

Only the Site Hazard Plan needs to be amended

A completely new Construction Phase Plan must be produced for every boundary adjustment

The demarcation drawing and management schedule should be updated, fully communicated to all parties and reviewed through the site arrangements

#16. What is the main purpose of the Site Out of Hours CDM Communications Sheet?

To protect personnel entering a CDM area for operational or emergency reasons and communicate changes that may affect subsequent work

To authorise planned overtime by the Principal Contractor’s normal construction workforce

To replace the need for a National Grid Safety Document during emergency work

To record the hours worked by contractors for payment purposes

#17. Which arrangement most accurately reflects NG/ET/SR163 requirements for excavation within an operational substation?

Mechanical excavation can begin after drawings have been reviewed, provided a banksman is present

Services should be identified and positively located, non-intrusive methods should be considered, and the appropriate Permit to Dig arrangements applied

Hand digging is always preferred to vacuum excavation because it gives the operative more control

A single Permit to Dig covers hand digging and mechanical excavation within the same work area

#18. What is the principal purpose of the four-week lookahead required by NG/ET/SR163?

To provide the commercial team with an updated forecast of contractor payments

To replace the main construction programme for short-duration activities

To identify upcoming high-risk activities and allow progress and risk controls to be monitored

To identify which activities can proceed without risk assessments and method statements

#19. Which statement correctly describes the NGET Pre-Site Start Meeting?

It should normally be organised and chaired by the Contractor at least six weeks before site access, using the Construction Phase Plan as the basis for discussion

It is held after site establishment to confirm that the mobilisation arrangements were adequate

It is arranged by the NGET Senior Authorised Person solely to agree Safety Documents

It is required only where more than one Principal Contractor will be working on the project

#20. An important project milestone has been brought forward. What is the most appropriate CDM response?

Continue with the original arrangements because changing the Construction Phase Plan could delay delivery further

Reduce the period available for RAMS and design review equally across all contractors

Mobilise additional contractors immediately and complete their coordination arrangements after work begins

Review how the revised programme affects design, resources, RAMS, temporary works, NGET review periods, competence and interfaces before progressing

Finish