STRUCTURAL DAMAGE BEAM REPAIR PROCEDURE (TWISTED WEB AND FLANGE)

This article is about method statement and work procedure of structural damage beam for engineers, supervisors and technicians.

1.0 PURPOSE
2.0 SCOPE
3.0 APPLICABLE DOCUMENTS
4.0 RESPONSIBILITIES
5.0 MANPOWER.
6.0 TOOL’S AND EQUIPMENT
7.0 METHODS/ REPAIR PROCEDURE
8.0 MODIFICATION WORKS
9.0 QUALITY CONTROL.
10.0 SAFETY PRECAUTION
11.0 ATTACHMENT

STRUCTURAL DAMAGE BEAM (TWISTED WEB AND FLANGE)

1. Purpose

This method statement will serve as a minimum guidelines to carry out the modification works of structural damage beam and to ensure that the work will be performed in accordance with the project specification and safety standard of plants and refinery projects and other commercial buildings.

2. Scope

This method statement and procedure will cover the modification works of structural damage beam (Twisted web and flange) at plants and refinery projects.

3. APPLICABLE DOCUMENTS

3.1 ARAMCO project specifications and standard.

1. SAEP-302 Instruction for obtaining a waiver of a Mandatory Saudi ARAMCO Engineering Requirements.
2. SAES-M-001 Structural Design for Non-building structure.
3. SCHEDULE Q Saudi ARAMCO project Quality Requirements.
4. 12-SAMSS-007 Fabrication of Structural and Miscellaneous Steel.
5. 12-SAMSS-008 Erection of Structural and Miscellaneous Steel.
6. Saudi ARAMCO Safety Requirement for scaffolds.
7. Saudi ARAMCO construction Safety Manual.

3.2 Industry Codes and Standards

1. AISC AISC code of standard practice, specification for structural joints Using ASTM A325 or A490 bolts.
2. AISC-303-05 AISC code of standard Practice for steel buildings and bridges.
3. AISC-360-05 AISC Specification for structural steel building (March 9, 2005) Page 145 (Chapter M Fabrication, Erection and Quality Control).
4. PIP STS05130 Erection of Structural and Miscellaneous steel Specification.
5. AWS D1.1 Structural Welding code.

3.3 Inspection and Test Plan/ Method Statement.

1. SATIP-M-001-01 Structural Steel for pipe rack, Steel supports and Miscellaneous
2. SAIC-M-2008 Repair/ Correction of Errors of structural Alignment.
3. S-000-3130-002 Construction Specification for steel structures site erection.
4. SAIC-M-2012 Inspection of structural welding (Per AWS D1 .1)

4.0 Responsibilities

Construction Manager shall be responsible for implementing HSE matter and to study, analyze and schedule all construction activities with his department to include manpower and equipment line up
as well as other possible resources required for the successful implementation of the construction and repair work activities. Study all aspects of work procedure as per DEC/JGC technical Scope of work.

The structural supervisor shall study and review all necessary documents for the modification works in his area to include, technical scope of work, specification and construction procedure.
Structural foreman shall be responsible for the direct work supervision at site to ensure that the work
will be performed in accordance with Technical Scope of work, project specification and standard.

QC Inspector shall be responsible of monitoring and inspection of the work and ensure that the work is performed in accordance with Technical Scope of work, project specification and
standard.

Safety Supervisor/Officer shall be responsible of monitoring safety aspects and ensuring that the work will be done in accordance with DEC/JGC Safety Standard Procedure. He shall give reminders or advise to the workers to do the activity safety.

5.0 Manpower

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

1. Structural Supervisor.
2. Structural Foreman.
3. Structural Fitters.
4. Welder.
5. Steel Workers.
6. Safety Supervisor/Officer.
7. QC Inspector.
8. Scaffolder.
9. Rigger if necessary.

6.0 Tools and Equipment

Tools and equipment needed should be in good condition and must be checked by structural Supervisor and Safety Officer prior to use in the construction area. These Includes but not limited as Below.

1. Crane if necessary
2. Hydraulic Jack
3. Level
4. Clamp
5. Welding Machine
6. Chain block/ lever block
7. Electric grinder machine
8. Oxy-acetylene (torch)
9. Hammer
10. Wrenches

7.0 Methods / Repair Procedure

Preparatory Works

1. Prepare necessary work permit prior to start the works.
2. Prepare all tools and equipment needed.
3. Provide scaffoldings and access if required.

8. Modification Procedure

8.1 Repair Procedure

1. Verify the location of beam or girder to be repair.
2. Prepare jacking tools, install the jack at the bottom flange of the beam which have been damage. Note; Care must be taken on consideration not to damage the bottom flange.
3. Install support below bottom flange of beam to counter the force acted by jack.
4. Gradually jack-up until the damage flange return to the original figure.
5. Use level to verify the flange surface if already corrected.

8.2 Repair Procedure

1. Verify the location of beam or girder to be repair.
2. Prepare all materials, tools to be used.
3. Use a clamp to straighten the twisted web of beam.
4. Gradually apply downward pressure on clamp until the web of beam straightened.

8.3 Touch up paint procedure.

1. Damage paint shall be clean by means of power or wire brush prior to painting.
2. Touch up paint shall be refer to table A of S-000-13A0-001 specification.
3. All damage steel part shall be coated as per the applicable schedule.
4. Touch up paint application shall be done by means of brush or roller.

9. Quality Control

1. QA/QC inspectors shall conduct the inspection, documentation.
2. QA/QC inspectors shall record and file all the necessary documents duly signed and approved by the company representative in all aspects of work.
3. Re-inspection of materials that already modified such as; straightness and surface preparation prior to application of touch up painting.

10. Safety Precautions

1. Approved work permit should be obtained prior to start any repair works.
2. Work Execution shall be carried out in accordance with this method of statement.
3. All crew must carried out a safety risk assessment prior to start of any new activity.
4. The necessary manpower inclusive of supervisory staff, tools, equipment, materials, and other resources is required must be available and ready to use.
5. Workers should wear their PP E’s always.
6. Good housekeeping must be maintained in the duration of works.
7. Safety supervisor/Officer and Engineer shall monitor compliance of entire working crew for the safety procedure until the work is fully completed.
8. Contractor shall make sure that all be incident and injury free.

11. Pictures of Repair Works

JOB SAFETY ANALYSIS