ANCHOR BOLT SETTING WORK PROCEDURE | METHOD STATEMENT

1. GENERAL
2. DEFINITIONS
3. REFERENCES
4. SCOPE
5. TOOLS AND EQUIPMENT
6. WORK PROCEDURE
7. RESPONSIBILITIES
8. SAFETY ACTION PLAN
9. LOSS PREVENTION PLAN
10. Attachment:
JOB SAFETY ANALYSIS

1. GENERAL

This method statement is made to enumerate the work activities related to the Anchor Bolt Setting works and also to ensure safe execution of all work activities in accordance with the requirements of CONTRACTOR/COMPANY in Refinery and Plants Buildings. All work activities shall be in accordance with the requirements of COMPANY’s Project specification and relevant International Codes / Standards.

1.1. Purpose

The purpose of this document is to form COMPANY and concerned parties of the works that will take place inside the COMPANY compound. Information and quick understanding of the works to be performed will be provided to the personnel involved.

1.2. Objective

The objective of the work activities enumerated herein is to facilitate the construction structure and plant facilities under the above referenced project.

2. DEFINITIONS

Method Statement : A written document that gives specific instructions on how to safety perform a work-related task, or operate a piece of plant or equipment.

3. REFERENCES

The latest revision of COMPANY’s Project Specifications shall be used as references and shall be the part of this Method of Statement during work execution.
• ASTM F1554 -Standard Specification for Anchor Bolts, Steel, 36, 55 and 105-ksi Yield Strength.
• ASTM A563 – Standard Specification for Carbon and Alloy Steel Nuts.
• ASTM A563 – Standard Specification for Hardened Steel Washer.
• ASTM A153 -Zinc Coating (Hot-Dip) on Iron and Steel Hardware.
• SAES-Q-001 -Specification for Concrete Construction .
• ACI 117 -Standard Specifications for Tolerances for Concrete Construction and Materials.
• ACI304R – Guide for Measuring, Mixing, Transporting and Placing Concrete.
• ACI 347R – Guide to Formwork for Concrete.
• ASTM C39 – Compressive Strength of Cylindrical Concrete Specimens.
• SAES-0-100 – General Requirements Safety and Security
• ASTM A6151615M – Deformed and Plain Carbon Steel Bars for Concrete Reinforcement.

4. SCOPE

The latest revision of COMPANY’s Project Specifications shall be used as references and shall be the part of this Method of Statement during work execution. This instruction Encompasses all the work activities related to concrete works wh ich includes.
• Anchor Bolt and Embedded Items Setting Work.
• Concreting Work.

5. TOOLS AND EQUIPMENT

• Total Station.
• Level.
• Measuring Tapes I rulers
• Hammers Spirit Levels
• String Line
• Spanners
• Marking pen
• Drill Hand saw.

6. ANCHOR BOLT SETTING WORK PROCEDURE | METHOD STATEMENT

6.1 Anchor Bolts

6.1.1 Material

• The requirement of Anchor Bolts and Embedded Items materials and setting tolerances should be corresponded to the requirement in the latest IFC drawing , Project Specifications and Standard drawing. All Anchor Bolts shall be installed in accordance with the drawing and well supported against displacement. Anchor Bolts should be kept allowable tolerances.

6.1.2 Anchor Bolt assemblies shall comply with the following materials specifications.

• Bolt : ASTM F1 554 Grade 36, or ASTM A 193M Grade B? FU125 KSI
• Nut : ASTM A563 Grade A or ASTM A194 Grade 2H, Heavy Hex
• Washer : ASTM F436 I F436M type 1
• Coating : (Hot-Dip) Galvanized as per ASTM A 153 class C or ASTM B695 class 50.

6.1.3 Anchor Bolt Setting

• Determine and verify the detail of the Anchor Bolt requirement from the latest approved IFC and standard drawing.
• Verify the detail regarding bolt diameter, number, length, shape, type/grade, pitch, embedded and projection for a particular foundation.
• Prepare the concrete forms. Concrete forms should be ready for the installation of anchor bolts. Concrete forms should either wooden boards or steel plates.
• Fix properly secure the template on top of form by nails positioning the holes to coincide with the position of bolts. Templates shall be used to locate bolts in the formwork with reference to the X and Y axis.
• Install the bolts with nut and washer on top and at the bottom of template to hold to its position. Continue the process until all bolts are installed.
• Set the bolts accordingly to the required pitch, position, projection and correct top of bolt elevation as marked by the survey team.
• Tighten the nuts below and above the templates to hold it firmly to its position and avoid any displacement or misalignment during placing of concrete.
• Anchor bolts or any other steel embedment shall not be used as the means for grounding electrical equipment, and shall not be tied to neutral ground conductors.
• Support the bottom of the bolt by tying it with a spacer or separator to separate extra bar with minimum diameter of 12mm.
• Before the inspection of COMPANY and/or CONTRACTOR, pre-inspection should be done by DAEWOO QC Inspector.
• Concrete can be poured, after the inspection and accepted by COMPANY and CONTRACTOR.
• Care should be observed during concrete placing in particular vibrator should not be touching the anchor bolts to avoid displacement. All anchor bolts should be tightened firmly.
• Prior to concrete placing cover the nuts and threaded portion with masking tape to protect from getting spoiled with splattered or spilled concrete.
• After concrete placing, remove the masking tape, clean the bolts, nuts and treads, and cover them with greasily applied cloth to prevent them from rusting.
• Maximum allowable tolerance should be kept as per specification.

• After concrete pouring, CONTRACTOR’s and COMPANY’s QC Inspector should check the survey report of anchor bolt coordination and level which is prepared by survey team.
• As built survey data should be submitted to the CONTRACTOR and COMPANY.

7. Responsibilities

7.1 Site Manager

The Site Manager is has the overall responsibility for this procedure and for implementing HSE on site and shall be handled by a competent person.

7.2 QA/QC Site Manager

The QA/QC Site Manager shall be responsible for ensuring that works are carried out in accordance with relevant procedures, ITP and quality requirements.

7.3 HSE Supervisor

HSE Supervisor is responsible for monitoring implementation of HSE.

7.4 Site Building Engineer

The Site Building Engineer has the overall responsibility for the implementation of work as per approved drawings. He shall arrange the manpower, equipment and materials required for the implementation of the works, coordinate with HSE Officer and QA/QC Site Manager involved in the tasks in accordance to the method statement. HSE on site and shall be handled by a competent person.

7.5 Site Supervisor

The Site Supervisor is the in-charge for the implementation of the work activities as per approved drawings. Also, the Site Supervisor is responsible for securing and closing out of all PTWs and ensure HSE standards are followed.

7.6 Q.C (Inspector)

The Surveyor (Inspector) is responsible for stake out the locations I boundaries, elevation, alignment and other related survey activities.

8. SAFETY ACTION PLAN

• Sub-contractor’s Safety Supervisor shall carry out the safety site inspections to ensure that safety requirements laid out in the safe work plan are followed during and after the work activities. All applicable requirement set forth by COMPANY HSE Standards shall be followed.

• Subcontractor’s Safety Department together with main contractor’s safety team and COMPANY safety representatives shall inspect the site prior to commencement of the works.
• The safety department shall ensure that all the requirements in relation to concrete works are to be followed.

• Prior to preparation, all related safety requirements in this work shall be secured by the supervisor responsible and inspected by sub-contractor Safety Manager / Supervisor.
• Unnecessary material should be removed to prevent the tripping hazard.
• Ensure to provide temporary wooden planks walkways during the rebar work to prevent fall.
• Every job can be done safely.
• Safety access should be provided.

9. Loss Prevention Plan

• No person shall be expected or required to work in unsafe or unhealthy working environments.
• Each person shall be competent and capable of safety performing any work required of them. They shall be suitable experienced, qualified and physically fit, and they shall have proper instruction, training and supervision provided.