INSTALLATION OF SCAFFOLD TUBE AS LIFELINE IN ERECTION WORKS

PURPOSE

SCOPE

APPLICABLE DOCUMENTS

RESPONSIBlLITY

MANPOWER

TOOLS  & EQUIPMENT

METHODS/PROCEDURES

QUALITY  CONTROL

SAFETY  PRECAUTION

ATTACHMENTS

INSTALLATION OF SCAFFOLD TUBE AS LIFELINE IN ERECTION WORKS

1.0 PURPOSE

This method statement to provide minimum guidelines for scaffolding sub­ contractor to carry out the installation of scaffold tube as lifeline in erection works for commercial buildings, plants and refineries to ensure that the work is carried out in accordance with Project Drawings and Project Specifications.

2.0 SCOPE

2.1 This method statement will cover the installation of scaffold tube as lifeline in erection works at commercial buildings, plants and refineries.

3.0 APPLICABLE DOCUMENTS

3.1 ARAMCO Project Specification and Standards

3.1.1 SAEP-302 Instruction for Obtaining a Waiver of a Mandatory Saudi ARAMCO Engineering Requirements
3.1.2 SAES-M-001 Structural Design for Non-Building Structure
3.1.3 12-SAMSS-008 Erection of Structural and Miscellaneous Steel
3.1.4 SCHEDULE Q Saudi ARAMCO Project Quality Requirements
3.1.5 Saudi ARAMCO Safety Requirement for Scaffolds
3.1.6 Saudi ARAMCO Construction Safety Manual

3.2 Industry Codes and Standards

3.2.1 AISC AISC Code of Standard Practice, Specification for Structural Joints Using ASTM A325 or A490 Bolts

3.3 Inspection and Test Plan

3.3.1 SATIP-M-001-01 Structural Steel for Piperack, Steel Supports & Miscellaneous Steel Structures
3.3.2 S-000-3130-002 Construction specification for steel structures site erection

4.0 RESPONSIBILITY

4.1 Construction Manager is responsible for implementing HSE and shall study, analyze and schedule all construction activities with his department. Study all aspects of work procedure as per Technical Scope of Work and Saudi Aramco Standards.

4.2 Structural Supervisor shall prepare all necessary documents (scaffold request form) for the installation of scaffold tube lifeline by scaffolding sub-contractor. He shall be directly reporting to the Construction Manager. He shall coordinate with other discipline to visualize possible conflicts in the drawings as well as in the schedules to provide other options in preventing unnecessary delays obstructions.
4.3 Scaffold Supervisor (by scaffold sub-contractor) shall be responsible for the direct work supervision for installation of scaffold tube life line at site and ensure that the work is performed safely.
4.4 Scaffold Inspector (by scaffold sub-contractor) shall be responsible in monitoring and inspection of the work and ensure that the work is performed in accordance with Saudi Aramco Standards.
4.5 Safety Engineer/Supervisor shall be responsible in monitoring safety aspects
and ensuring that the work is done in accordance with Saudi Aramco Construction Safety Manual. He shall discuss to the field supervisor’s the characteristics of related materials and status of work area giving reminders as an additional point to work safely.

5.0 MANPOWER

5.1 Manpower will consist of the following, but not limited to as listed to as below:

5.1.1 Structural Supervisor
5.1.2 Scaffold Supervisor (by others) Aramco Certified
5.1.3 Scaffolder (by others)
5.2 Safety Engineer/Supervisor
5.3Scaffold Inspector (by others) Aramco Certified

6.0 TOOLS AND EQUIPMENT

6.1 Tools and equipment needed should be in good condition and must be checked by Scaffold Supervisor (by others)/ Safety Officer prior to use. These includes but not limited as below:
6.1.1 Lifeline (i.e. tubular scaffold pipe) by others
6.1.2 Adjustable wrenches/Ratchet by others
6.1.3 Scaffold couplers by others

7.0 METHODS/ PROCEDURES

7.1 Preparation Works

7.1.1 Secure work permit from concerned personnel prior to start of work/activity.

7.1.2 Structural  Supervisor shall  prepare scaffold  request form stating the location of activities and type of scaffold tube lifeline to be done.

7.1.3 Scaffold  Sub-contractor  shall  prepare  all  materials  or  tools needed for the job.

7.2   Installation Works (by scaffolding sub-contractor)

7.2.1 On erected structures, install scaffold tube lifelines as shown in the Attachment A  Lifelines shall be made of scaffold tubes which shall be fastened  rigidly  on  steel  column/beams  by  means  of  beam clamps/couplers.  Refer to Attachment  A for typical  scaffold tube lifeline arrangement.

7.2.1.1   Anchor points for Lanyards shall be as follows:

• Be high  enough  (preferably  shoulder  height)  to  prevent personnel from falling more than 1.8m (6 ft.) or striking any lower level during a fall
• Not to be located so as to cause loss of balance or a body position   that   would   increase   the   risk   of   fall   during attachment and detachment of lanyard
• Be free of sharp objects
• Materials  such  as  manila, nylon or polypropylene  rope, shall not be used as life  line.

7.2.2 Before use,  the  scaffold tube  lifeline  shall  be inspected  by scaffolding inspector/  qualified inspector to ensure that it  is  built in  accordance with the safety standards.

7.2.3 Scaffold tube lifelines installed on structure shall be used for the following:

7.2.3.1   Anchor parts of workers in transferring from one scaffold platform to the other.

7.2.3.2 Anchor    parts   of    riggers   who   will    detach    rigging tackles/accessories after a structural element have been completely installed.

7.2.3.3  Anchor   points  for   safety   harnesses   of  workers   doing   bolt tightening operations,  i.e.  in  mid span of erected beams/girders and where building of scaffold platform is not feasible. See Attachment A

7.2.3.4  Hook-up points for safety harness of workers doing miscellaneous works such welding,  cutting,  grinding and touch-up  painting on elevated structures.

7.2.4 Workers shall be 100% tied-off to lifelines  at all times during the duration of the works. Full body harness shall be inspected and color-coded before use.

8.0 QUALITY CONTROL

8.1  QC Inspector will be present at site during the activity to ensure that the activity will not generate damage on the structure.

9.0 SAFETY PRECAUTION

1. Approved work permit should be obtained to concerned personnel prior to the start any activities.
2. Work  execution  shall  be  carried  out  in   accordance  with  this  method  of statement.
3. The necessary manpower inclusive of supervisory staff, tools, equipment, materials, and other resources required must be made available and ready to use.
4. During the activity, closely supervision shall be done by field foreman.
5. All workers shall wear as a minimum PPE required below.
   • Safety Helmet
   • Safety glasses
   • Safety Shoes
   • Gloves
   • Full Body Harness with retractable lanyard
6. Sufficient lightings shall be provided if work is done at night time. Work at night shall be approved by client.
7. Good housekeeping must be maintained in the duration of works.
8. Safety Supervisor/Engineer shall monitor compliance of entire working crew to safety procedure until the work is fully completed.
9. Contractor shall make sure that all shall be incident and injury free.
10. The area shall blocked by physical  barricade or warning tapes during activities is to be done to ensure safety.

10.0   ATTACHMENTS

Attachment  A       Job Hazard and Risk Assessment  (JHRA)

TYPICAL DETAIL FOR SCAFFOLD LIFELINE FOR FALL ARREST SYSTEM

Design Calculation for the Adequacy of the Scaffold Lifeline for Fall Arrest System

SCAFFOLDING REQUEST FORM FREE DOWNLOAD