1. Scope of Work
This method statement is applicable for Installation of Sleeves & Puddle Flange for [Project/Facility Name] in accordance with the specified standards and regulations in project specifications.
The Scope of activity includes the delivery to Worksite, installation, pre-commissioning, testing, commissioning and guarantee of the system as described in the specification/contract documents and drawings.
2. References
- Approved Shop drawing
- Specification (V: xyz)
- Approved inspection of material delivered on site.
3. Responsibility
The Project engineer shall be overall accountable for arranging the materials/substances as per worksite stipulation.
Site supervisor shall ensure workmanship and will also make sure that all the work is done by the skilled workforce.
QA/QC engineer shall ensure that all work is done as per approved drawings and material used is approved and coordinate with [Organization MEP] Coordinator for internal checking prior to final inspection to consultant.
4. Equipments / Tools
Following equipment/devices and or tools shall be organized before starting the activity.
- Tool box
- Welding machine
- Welding cable
- Welding helmet
- Chipping hammer
- Welding holder & earthing holder
- Spanner
- Portable grinder
- Gloves
- Goggles
5. Work Sequence/Procedure
5.1 Installation of Puddle Flange
- As per approved shop drawings and Invert Level, mark the centre and invert level of Sleeve on reinforcement /steel bars for water walls.
- Steel fixing contractor to bend and clear the exact area for installing Sleeve.
- Once the location is clear, position the Sleeve in the steel area.
- Once the Sleeve is in proper location recheck the level and alignment.
- Tie the sleeves with suitable wires with steel to avoid any misalignment while concreting.
- Clearance for civil contractor to close the shutter with exact holes matching with Sleeve to proceed with concrete pouring.
- All the work to be inspected at all stages by consultant engineer.
5.2 Installation of Puddle Flange
- As per approved shop drawings and Invert Level, mark the centre and invert level of Puddle flange on reinforcement /steel bars for water walls.
- Steel fixing contractor to bend and clear the exact area for installing puddle flange.
- Once the location is clear, position the puddle flange in the steel area.
- Once the puddle flange is in proper location recheck the level and alignment.
- Clearance for civil contractor to close the shutter with exact holes matching with puddle flange to proceed with concrete pouring.
5.3 Welding Process for Weld Neck Flanges on Puddle Flange
- Preparing face and edge of pipe piece of puddle flange (outer side application area pump room) with proper finishing tools (finishing grinder and other tools).
- After the edges are prepared and cleaned, final checking for alignment and position.
- Clearing the selected area in front (if required on height scaffolding tower to be prepared in accordance with safety requirements).
- Get the permits for Electric arc welding at basement area with all safety requirements.
- As per consultant’s approval using the weld neck “socket end “flange with inside and outside welding.
- In case of galvanized pipe first galvanize coating to be removed by grinding or suitable procedure to reduce the smoke generation.
- All the work to be inspected at all stages by consultant engineer.
6. Inspection & Testing Plan
- All the Sleeves & Puddle Flange Installation works shall be inspected as per the inspection & testing plan and inspection checklists. Results of inspection & testing shall be document on the inspection checklist forms.
- Refer to inspection & Testing Plan No: ABC
7. Inspection Checklist.
- Inspection Checklist
- Work Inspection Requests
8. Attachments
- Risk Assessment
- Inspection Checklist
Method Statement for Installation of Sleeves and Puddle Flanges.
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