SOP FOR STRUCTURE

ERECTION

Doc.No.: PRJ(SOL)-SOP-04

Rev.No: 00

Eff. Dt.:01-08-2018

Approval Date: 31.07.2018

Page 1 of 12

Prepared by: Project Planning Vetted by: Quality & Design

Approved by: Head – Solar Ground Mounted

PURPOSE: To obtain safe and operational high yield of structure erection works which saves time

and cost and serves to avoid rework.

SCOPE: Describe steps in details how to proceed for a quality, high productive method for structure

erection works.

RESPONSIBILITY: Project Manager/Site In-Charge, Section In-Charge & DC Contractors

SOP FOR STRUCTURE

ERECTION

Doc.No.: PRJ(SOL)-SOP-04

Rev.No: 00

Eff. Dt.:01-08-2018

Approval Date: 31.07.2018

Page 2 of 12

Prepared by: Project Planning Vetted by: Quality & Design

Approved by: Head – Solar Ground Mounted

DESCRIPTION

1. REQUIRED TOOLS AND MATERIALS:

S. No. Tool Photo Application

1 Torque Wrenches

Used to apply torque of

desired value

2 Spanners

For tightening of Nut

Bolts

3 Measurement tape

For measurement distance

4 Cotton cord

Used as a reference for

alignment of structure

5 Power Tools

Makita power tools should

be used to torque nut bolts

at desired torque value

SOP FOR STRUCTURE

ERECTION

Doc.No.: PRJ(SOL)-SOP-04

Rev.No: 00

Eff. Dt.:01-08-2018

Approval Date: 31.07.2018

Page 3 of 12

Prepared by: Project Planning Vetted by: Quality & Design

Approved by: Head – Solar Ground Mounted

6 Inclinometer

To check alignment of

structure

7 Water level pipe

To check height of two

stubs for straight

alignment of structure

assembly

8 A- type ladder

Used for working at

height part of structure

9 PPE

To protect worker from

get hurt

SOP FOR STRUCTURE

ERECTION

Doc.No.: PRJ(SOL)-SOP-04

Rev.No: 00

Eff. Dt.:01-08-2018

Approval Date: 31.07.2018

Page 4 of 12

Prepared by: Project Planning Vetted by: Quality & Design

Approved by: Head – Solar Ground Mounted

2. WORK PROCEDURE

2.1 PRELIMINARY ACTION

Inspection of the stub casting and alignment. Record for any deviation and report to

concern.

Check the actual vertical level difference between different foundations in one array using

water level pipe

2.2 STRUCTURE INSTALLATION

Before commencement of structure erection work all modules pallets should be shifted to

location where erection work will be started.

Checking of

Verticality of stub using

inclinometer

Checking actual vertical difference between two

stubs using water level pipe

SOP FOR STRUCTURE

ERECTION

Doc.No.: PRJ(SOL)-SOP-04

Rev.No: 00

Eff. Dt.:01-08-2018

Approval Date: 31.07.2018

Page 5 of 12

Prepared by: Project Planning Vetted by: Quality & Design

Approved by: Head – Solar Ground Mounted

Module pallets should have to be only lifted by fork lift attached to excavator. Ensure that

pallets should be placed in such a way so that it will not affect structure erection work.

NOTE: Tool Box Training (TBT) should be given before shuffling of module pallets.

Tools used for erection of structure need to be calibrated and calibration should be checked

at site before commencement of work.

Module Pallets

shake out at respective

location

Pallets of module

lifting from container using

fork lift

Fork lift

attached to

excavator

SOP FOR STRUCTURE

ERECTION

Doc.No.: PRJ(SOL)-SOP-04

Rev.No: 00

Eff. Dt.:01-08-2018

Approval Date: 31.07.2018

Page 6 of 12

Prepared by: Project Planning Vetted by: Quality & Design

Approved by: Head – Solar Ground Mounted

After shuffling of module pallets to their location assembly of rafter should be done at stub.

Tool Box Training should be given to worker before erection work about safety at working

area.

After the installation verify that all the fasteners are as per the BOM provided by the design

drawing. If any deviation is found during the assembly immediately report to the concerned.

Make sure that the spring washer is placed along with nut always and not with the head of

the bolt. It is advisable to use flat washers of appropriate thickness wherever slotted holes

are encountered in the structure.

TBT

about safety and handing

of structure

materials Assembly

of rafter

Calibrated tools

SOP FOR STRUCTURE

ERECTION

Doc.No.: PRJ(SOL)-SOP-04

Rev.No: 00

Eff. Dt.:01-08-2018

Approval Date: 31.07.2018

Page 7 of 12

Prepared by: Project Planning Vetted by: Quality & Design

Approved by: Head – Solar Ground Mounted

After assembly of rafter other structure material viz. purlin, mounting rail etc. should be

done using cotton cord for alignment of structure.

Tightening of structure parts should be done using power tools and spanner. Torqueing of

nut bolts should be checked using torque wrenches at required Nm and torque marking

already done.

Ensure that both the extreme end members are tightened with specified torque and specified

tools. Use calibrated torque wrench and spanners for final tightening. To save on time and

labour requirement use power tools i.e. pneumatic power tools / electric battery based

power drive tools.

Assembly and

alignment of

structure parts

Nut Bolts tightening using

power tool

M10 Bolt

M10 Flat

washer

M10 Nut

M10 Spring

washer

SOP FOR STRUCTURE

ERECTION

Doc.No.: PRJ(SOL)-SOP-04

Rev.No: 00

Eff. Dt.:01-08-2018

Approval Date: 31.07.2018

Page 8 of 12

Prepared by: Project Planning Vetted by: Quality & Design

Approved by: Head – Solar Ground Mounted

Now place end clamp and mid clamp with proper nut bolt assembly at their respective

positions. Ensure that clamp without rubber should not be placed in structure.

Take the structure already installed as a reference and proceeds with installation of other

structures.

2.3 LIST OF FASTENERS.

Item

Photo

M10 Bolt

M10 Nut

M10 Flat Washer

Placement of end and

mid clamps

SOP FOR STRUCTURE

ERECTION

Doc.No.: PRJ(SOL)-SOP-04

Rev.No: 00

Eff. Dt.:01-08-2018

Approval Date: 31.07.2018

Page 9 of 12

Prepared by: Project Planning Vetted by: Quality & Design

Approved by: Head – Solar Ground Mounted

M10 Spring

Washer

M6 Bolt

M6 Nut

M6 Flat Washer

M6 Spring

Washer

2.4 RECORDS

Structure Erection Checklists

Notes: Tools must be calibrated with NABL accredited lab.

3. SAFETY PRECAUCATION

3.1) PERSONAL PROTECTIVE EQUIPMENT

SOP FOR STRUCTURE

ERECTION

Doc.No.: PRJ(SOL)-SOP-04

Rev.No: 00

Eff. Dt.:01-08-2018

Approval Date: 31.07.2018

Page 10 of 12

Prepared by: Project Planning Vetted by: Quality & Design

Approved by: Head – Solar Ground Mounted

Appropriate safety helmet must be worn at all times in all sites.

Appropriate safety footwear must be worn at all times in all sites.

Approved safety glasses must be worn at all times in all sites.

Approved Full Body Harness with double lanyard must be worn at all times in all

sites.

Approved reflective jacket must be worn at all times in all sites.

Appropriate ladder must be used.

Use appropriate type of gloves. Safety gloves should be worn when handling steel,

securing straps, ropes or chain slings

Appropriate scaffold must be used.

Ring or Jewelry must not be worn and removed.

3.2) PRE-OPERATIONAL SAFETY CHECKS

Close co-operation and effective supervision during handling of structural material at site.

Check the area where the material is to be unloaded. There needs to be clear space for

subsequent handling of material.

The capacity of the lifting equipment on site to be checked vis-à-vis weight of the load

specific requirements for safe slinging or handling of the load, should consider following:

All the risks have been assessed.

Are the Working Load Limits Adequate?

What is the weight of the load?

Where is the centre of gravity?

SOP FOR STRUCTURE

ERECTION

Doc.No.: PRJ(SOL)-SOP-04

Rev.No: 00

Eff. Dt.:01-08-2018

Approval Date: 31.07.2018

Page 11 of 12

Prepared by: Project Planning Vetted by: Quality & Design

Approved by: Head – Solar Ground Mounted

What is the sling angle?

Capacity of the gear?

Will the Load Be Under Control?

Tag Line available?

Is there any possibility of fouling?

Clear of Personnel?

All lifting tools / Machine needs to be inspected from TPI.

Securing of load components to lifting.

Bundle length Max bundle Weight Slinging Point

< 6m <150 kg Min 3 points

Unloading of MMS Should be carried out once all the risks have been assessed.

Don’t tie the load to an object to drag it off by moving the vehicle

If the load becomes unstable in some way during unloading, unloading should stop

immediately and the relevant competent person should be informed. Access to the vehicle

may be dangerous in these circumstances as the load could move unexpectedly and a larger

exclusion zone should be imposed around the vehicle. A decision to re-commence

unloading should only be made by staffs who are competent to make such a decision.

4. RECORDS: CHECKLIST

5. REVISION DETAILS: -

S. No Date Rev No Rev. History Remarks

SOP FOR STRUCTURE

ERECTION

Doc.No.: PRJ(SOL)-SOP-04

Rev.No: 00

Eff. Dt.:01-08-2018

Approval Date: 31.07.2018

Page 12 of 12

Prepared by: Project Planning Vetted by: Quality & Design

Approved by: Head – Solar Ground Mounted

1 00 New release