METHOD STATEMENT LV CABLES TESTING

TABLE OF CONTENTS

1. Scope/objective
2. References
3. Access/Egress
4. Health and safety Hazards

a. Safety Rules during testing
b. Safety lighting
c. Task lighting
d. Emergency arrangements
• General
• Fire Precautions
• Communication
e. Risks Control
• Hazards/Risks
• 3rd Party Protection
• Environmental Considerations

5. Definitions
6. Responsibilities/supervision
7. Procedures/Method to be Employed
8. Training
9. Working hours
10. House keeping
11. Manpower Requirements & Supervision
12. Testing Instruments Requirements
13. Plant & Equipment

a. General
b. Personnel Protective Equipment
c. Power

14. Q.C Approvals and other Documentation
15. Supporting Documentation
16. Distribution
17. Other Information
18. Site Safety Engineers Approval
19. Attachments

1.0 Revision Status
Revision
No Date Prepared
By Reviewed
By Arabtech Approved
Revision
Description

0
10 April 05
D.SAVVA

S.GEORGIOU

K.MARNERIDES
M.PICKUP
First submission

1.0 SCOPE / OBJECTIVE

This method statement covers the testing of LV cables [insulation resistance test & earth (armour-metal sheath) continuity test] and describes the procedures used to ensure that installation of LV cables is safe.

2.0 REFERENCES

2.1 Electrical Shop Drawings ref:1505/A&P/SD/E, 1505/A&P/SD/PW & 1505/A&P/SD/LT
2.2 General requirements –Cable testing Specification Section 16010
2.3 Particular electrical Specification Section 16120 (Power cables)

3.0 ACCESS / EGRESS

Testing of LV cables will be carried out after the completion of installation of a cable or of any usable group of cables as considered fit by Senior Engineer in charge.

4.0 HEALTH AND SAFETY HAZARDS.

Health and Safety procedure by Main Contractor and by A&P will be implemented for this job. The responsible safety officer as per A&P procedure will conduct routine safety inspection.

a. Safety Rules during testing:

In order to ensure safe conditions during testing the following rules have to be followed:

• Persons engaged with inspection and testing have to be skilled and have received proper and adequate training related to procedures and test equipment utilized for the particular testing activity.
• Test instruments and test leads should be maintained in a safe condition and the test methods not to create danger either for the operator or for other persons or livestock.
• Where tests are required to circuits which have not to be energized, it is always necessary to prove that the circuit is ‘dead’ (switch off main supply & measure voltage by a calibrated multimeter) before applying the test.

  b. Safety Lighting.

Safety lights will be used in case of power failure ensuring the good illumination of the working area to aid evacuation if necessary.

   c. Task Lighting.

Adequate lighting will be provided ensuring the good illumination of the working area.

   d. Emergency Arrangements.

• General : Site general safety procedures will be followed. In case of emergency the Safety Officer or the most senior employee present will stop the work, and make the necessary emergency arrangements and report to the assembly points as described during Site Induction Course.

• Fire Precautions : No significant fire risks associated with this activity but general fire precaution measures will be taken as per Arabtec instructions to A&P.

• Communication : Communication from site areas to Site Office via mobile phones issued to senior foremen. In emergency situations the users of handheld 2-way radios to be notified if deemed that this can speed up notification of relevant personnel and/or the JBR01 Site Clinic.

e. Risk and Controls.

• Hazards / Risks
Relevant risk assessments (See section 19 Attachments):

• WAH-001 Ladders and Step Ladders.
• PRT-007 Hand Tools

• 3rd Party Protection: Applicable as per the contract only.

• Environmental Considerations: There are no waste materials associated with cable testing.

5.0 DEFINITIONS

  ATC   -   Arabtec Construction (LLC.)
          A&P -     A&P Paraskevaides and Partners LLC.
  M.S. -    Method Statement.
          I.T.P-             Inspection & Testing Plan

6.0 RESPONSIBILITIES / SUPERVISION

6.1 Project Manager – will have the overall responsibility of the Project for execution, quality and safety. Also he will maintain the planning progress and coordination of works with Main Contractor.

6.2 Project Senior Electrical Engineer / Site Electrical Engineer – will be responsible for the day to day activities on site, for materials, drawings, testing & commissioning. The Project Senior Electrical Engineer will report to the Project Manager.

6.3 Supervisor – will be directly responsible for the day-to-day job/testing on site, for handling the technicians or any other staff assign to his area.

6.4 Safety Officer – will be responsible for the Health and Safety aspects on site as per the Main Contractor and A&P Safety requirements.

6.5 QA/QC Department – will oversee the quality requirements and quality control measures for the Project in coordination with the Senior Electrical Engineer as outlined in the A&P QA Manual.

7.0 PROCEDURES / METHOD TO BE EMPLOYED.

a. Insulation test:

1. Remove all the loads if any in order to avoid obtaining a distorted test value for insulation.
2. Disconnect any equipment which is likely to be damaged by an insulation test.
3. Disconnect the neutral conductor from the supply to facilitate the necessary insulation resistance testing between neutral and earth.
4. Carry out insulation test (DC test voltage to be used is 500V) between live conductors and between all live conductors and Earth.
5. Tabulate the results of the test in the test form attached (refer to 1.2.03 TS01)

Note: Minimum insulation resistance is 0.5 MΩ
(Refer to General requirements –Cable testing Specification Section16010)

b. Earth continuity test:

1. Strap the earthing terminal block in the distribution board with one of the outgoing phase conductors of the cable under test.
2. Apply the instruments test leads at the armour/metal sheath and at the phase conductor at the other side of the cable.
3. Measure the resistance and fill the test form (PASS/FAIL) accordingly (refer to 1.2.03 TS01).

8.0 TRAINING

8.1 Tradesmen who will be used to perform the testing will be trained electricians. If deemed necessary specific team / individuals will undergo further training by the Production / Quality Assistance Department.

8.2 Toolbox talks will provide general training and awareness for each activity and also undergo further training by the Production / Quality Assistance Departments.

9.0 WORKING HOURS

Normal working hours: 7.00 a.m to 5.00 pm

10. HOUSE KEEPING

There are not any waste materials or any other waste rising out of testing.

11. MANPOWER REQUIREMENT & SUPERVISION

For the testing of an LV cable minimum two (2no) electricians are needed. Basically the manpower requirement will depend on the work load.

12. TEST INSTRUMENT REQUIREMENTS

• Insulation test instrument (calibrated).
• Continuity test instrument (calibrated).

13. PLANT & EQUIPMENT REQUIREMENTS

a. General: Markers, screw drivers, pliers.
b. Personnel Protective equipment: All personnel should wear at all time safety shoes, helmet and coverall.
c. Power: Single-phase normal power where it is needed.

14. Q.C. APPROVAL AND OTHER DOCUMENTATION
15. SUPPORTING DOCUMENTATION
16. Shop drawings
17. Load Schedules
18. Test instruments/Manufacturers instruction manuals
19. DISTRIBUTION

• Main Contractor,
• Senior Electrical Engineer
• Q.C. Engineer
• Site Electrical Engineer
• Tower Health & Safety Officer

14. OTHER INFORMATION

Not applicable

18. SITE SAFETY ENGINEER’S APPROVAL

Risk mitigation measures as identified in Risk Assessments in Section 19 to be inspected at regular intervals through out the duration of activity.

19. ATTACHMENTS

• WAH-001 Ladders & step ladders
• PRT-007 Hand Tools
• 1.2.03 TS01 LV cables Test Sheet Form