SCAFFOLD PROCEDURE

Engineering, Procurement, Construction and

Commissioning Works
IA Visitor and Security Building Project.
Nigeria LNG Limited

PROJECT NO: 14/MOC/PDR/034P

B 29 SEP 2021 Toluwani A Edward N Bayo A Approved for Construction

A 23 SEP 2021 Toluwani A Edward N Bayo A Issued for Approval
06 SEP Toluwani A Edward N Bayo A
O Issued for Comment
2021
ISSUE DATE BY CHKD APPD DESCRIPTION
WHEN REVISION HAVE BEEN MADE TO THIS DOCUMENT THE INDEX OF ISSUE SHALL BE INDICATED IN A
TRIANGLE NEAR THE PART(S) CONCERNED
CLASSIFICATION: MOST CONFIDENTIAL CONFIDENTIAL RESTRICTED
UNRESTRICTED
EPC AND
This document is confidential. The copyright therein is vested
in Nigeria LNG Ltd. Recipients must obtain the written authority COMMISSIONING
of the said company before wholly or partly duplicating these WORKS FOR THE IA
contents or disclosing the same to others. VISITOR AND
SECURITY BUILDING
All rights reserved.
PROJECT
DISCIPLINE: HEALTH, SAFETY & ENVIRONMENT PROJECT NO: 14/MOC/PDR/034
LOCATION: BONNY ISLAND, PLANT: LNG PLANT
NIGERIA COMPLEX
PAGE 1 OF 33

NIGERIA LNG LTD DOC NO: B-63.589 REV B

UNIT:
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 REVISION LOG

REVISION PAGES REMARKS

REV O First Issue

REV A 10, 11, 16, 17, 29, 30, 33 Second Issue

REV B Third Issue

DISIPLINE: HEALTH, SAFETY & ENVIRONMENT

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 TABLE OF CONTENTS

1.0

PURPOSE………………………………………………………………………………………………………
…………. 4
2.0

SCOPE……………………………………………………………………………………………………
………….. 4
3.0

DEFINITIONS……………………………………………………………………………………………
……….. 4
4.0

REFRENCES……………………………………………………………………………………………
………….. 7
5.0 ROLES AND
RESPONSIBILITIES…………………………………………………………………………. 8
6.0

SCAFFOLDING………………………………………………………………………………………………
…………. 9
7.0

FITTING…………………………………………………………………………………………………
…………... 10
8.0 REGULATION COMMON TO ALL
SCAFFOLD……………………………………………………. 12
9.0 METAL TUBE SCAFFOLD
SPECIFICATION…………………………………………………………. 17 10.0
MOBILE
SCAFFOLDS……………………………………………………………………………………
…… 26
11.0 TOWER
SCAFFOLDS…………………………………………………………………………………………..
28

DISIPLINE: HEALTH, SAFETY & ENVIRONMENT

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 12.0 CANTILEVER
SCAFFOLDS………………………………………………………………………………….. 29
13.0 SCAFFOLD
INSPECTION…………………………………………………………………………………….. 31
14.0 PERMIT TO
WORK…………………………………………………………………………………………….. 32
15.0 LAST MINUTES RISK
ASSEMENT………………………………………………………………………… 33
16.0 EMERGENCY RESPONSE
PLAN…………………………………………………………………………. 3 3
17.0 AUDITING
PROCESS………………………………………………………………………………………….. 33
18.0 HIGH RISK
SCAFFOLD………………………………………………………………………………………… 37
19.0 RESCUE
PLAN……………………………………………………………………………………………………
… 37
APPENDIX
1…………………………………………………………………………………………………………
……... 38
APPENDIX
2…………………………………………………………………………………………………………
……… 39

DISIPLINE: HEALTH, SAFETY & ENVIRONMENT

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1.0 PURPOSE

The purpose of this procedure is to ensure the safe erection, alteration/modification

and dismantling of scaffolding that is to be constructed at the worksite. It is also to
ensure scaffolding is adequate for the work to be performed and properly erected
and dismantled. It covers selecting, erecting, and dismantling all types of scaffolds. It
applies to workers, supervisors, scaffold qualified persons, scaffold custodians, and
facilities.

2.0 SCOPE

This procedure shall cover all scaffolding work undertaken at the worksite (ETP
Upgrade Project sites).
However, whilst as much information as possible on DEUX requirements for tube, fitting
and other forms of scaffolding is included, it is not practicable to include details of all
systems of scaffolding. We will always be prepared to search for relevant
information, advice and guidance from any authoritative source so as to ensure the
safe erection, alteration and dismantling of scaffolding

3.1 DEFINITIONS

BASE PLATE A mild steel plate with an area of at least 150mm x 150mm x 3.0mm
thick.

BAY The rectangular space enclosed by 4 adjacent standards for the full
height of the scaffold or the equivalent space when applied to a
putlog scaffold.

BRACE A tube incorporated diagonally across 2 members in a scaffold

and fixed to them to afford stability.
BRIDLE A horizontal tube spanning between putlogs for the purpose of
supporting intermediate putlogs when it is impossible to support
such putlog in the wall,
e.g. in front of a window opening.

BUTT A tube fixed to scaffold and butting to an adjacent structure to

prevent horizontal movement of a scaffold.
DOUBLE standard, ledger, spur, etc., two tubes side by side joined
together with swivel fittings.

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 FACE Usually the side of the scaffold furthest from the building, also
wide side of a plank.

GIN WHEEL A single pulley for rope, which may be suspended, from a scaffold
tube.

HEADSTOCK A member secured to the top of a tom to distribute the load

exerted by the tom.
HEIGHT In relation to a building or structure or intended building or
structure, means the measurement that is obtained by vertical
measurement of the distance between the highest point of the
building or structure or intended building or structure and the
surface of the site.
In relation to a point at which a workman is supported or
intended to be supported on scaffolding, means the distance
between that point and the surface on which the scaffolding
stands.
HOP-UP-BRACKET A frame designed to be secured to a standard to support a
working platform and includes a side wall bracket.

KIKA LIFT A height from the ground or floor to the lowest

ledger/transom, or the vertical distance between ledgers.

LEDGER A tube fixed horizontally to the standards to tie the

scaffolds longitudinally which may support the putlogs.

LEDGER BRACING similar to ‘heel and toe’ bracing, but fitted to ledgers by double
couplers.

LIGHT DUTY
SUSPENDED STAGEA working platform suspended from overhead supports and:
 The means of lowering or raising the stage, whether those
means are operated by hand or are power driven
 The overhead supports, attachments and tracks; and
 The means of suspension.

DISIPLINE: HEALTH, SAFETY & ENVIRONMENT

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 OUT-RIGGER In the case of a mobile scaffold means a member secured to the
standard to enlarge the base of the tower.
PANEL A rectangle enclosed by four tubes.

PANEL BRACING As for ‘zigzag’ bracing except that braces run in the same
direction in each panel.
PLAN BRACING Bracing in the horizontal plane secured to standards
adjacent to and below the ledgers, with right angle
couplers.
PUTLOG A member fixed in horizontally across ledgers or across a
ledger to an adjacent wall to support a working platform.
RAKER An inclined tube fixed to a scaffold to assist stability.

SAFETY FITTING An additional right angle or swivel coupler provided adjacent to the
right angle coupler on a tube such as a strut, tie, puncheon or
cantilever. Designed to increase the friction grip at that point.
SPAN The distance measured along a member, between the
centerlines of adjacent supports of that member.
SPLICE Two or more tubes joined together with swivel couplers, for
extending a tension member. The tubes can be 'off-set' or 'in-
line', the latter requiring a joiner and an extra piece of short
tube.
STANDARD A vertical support.
SPREADER A gauge to fit between two members so that they will be fixed at a
constant distance.
START An inclined scaffold tube secured to transoms or ledgers with
right angle couplers.
TOM A vertical member secured between two (2) horizontal
surfaces. For example to support the inboard end of a
cantilever.

DISIPLINE: HEALTH, SAFETY & ENVIRONMENT

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 TIE A member used to secure the scaffold to a structure.

TRANSOM A transverse horizontal member, clamped to the standards or

ledgers by right angle couplers.

CITB Construction Industry Training Board

CISRS Construction Industry Scaffolders Record Scheme

4.0 REFERENCES

BS EN12811-1:2003 Temporary Works equipment. Scaffold Performance

requirements
and general design.

BS 1139-2.2:2009 Metal Scaffolding: Aluminum Couplers and special

couplers in
Steel. Requirements and test methods.
BS 1139-6:2005 Metal Scaffolding: Specification for prefabricated tower
scaffolds outside the scope of BS EN 1004 but utilizing
components from such systems.
BS EN 131-7:2013: Ladders: Mobile Ladders with Platform;
BS EN 131- Ladders: Requirements, Testing, Marking.
2:2010+A1:2012
BS EN 131- Ladders: Terms, types, functional sizes.
1:2007+A1:2011
BS EN 131-3:2007 Ladders: User instructions

BS EN 131-4:2007 Ladders: Single or multiple hinge-joints ladders

BS 1129:1990 Specification for Portable timber ladders, Steps, trestles
and
lightweight staging
BS 2482:2009 Specification for Timber Scaffold Boards.
BS 5974:2010 Code of practice for planning, design, setting up and use
of
temporary suspended access equipment.
PRD.15.05.270 NLNG Procedure for Scaffolding Access Systems Control
and
Usage.

IOGP 577 International Association of Oil and Gas Producers’

Fabrication
Site Construction Safety Practices
B-63. 159 Project HSE Plan

DISIPLINE: HEALTH, SAFETY & ENVIRONMENT

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5.0 ROLES AND RESPONSIBILITIES
5.1 PROJECT MANAGER
 Ensures of adequate fund is available and budget for the purchase of fit for use
scaffold materials to site.
 Ensure adequate HSE Policy and procedure in place for safe conduct of work.
 Ensure that heads of department prepare for adequate training of personnel
carrying out scaffolding works.
 They should also ensure that head of department ensure compliance with all relevant
HSE policies and procedures provided through regular inspections.

5.2 HSE COORDINATOR

 Provision of prompt assistance to head of the department in terms ensuring
that there are policies and procedures in place for safe conduct of scaffolding
works on site.
 Assisting in developing and securing required trainings for the scaffolders.
 Ensuring that all newly deployed scaffolding materials meet with HSE
standards and regulations of NLNG
 Ensure that inductions, toolbox talks and LMRA is conducted and documented
before any scaffolding work is done on site.

5.3 COMPETENT PERSON (SCAFFOLD SUPERVISOR/INSPECTOR)

 He oversees the scaffold selection, erection, use, movement, alteration,
dismantling, maintenance, and inspection.
 The competent person will be knowledgeable about proper selection, care, and
use of the fall protection equipment.
 Additionally, the competent person shall assess hazards.
 He should not allow any employee who have not received adequate training to
be used for scaffolding works
 He must communicate his needs to the HSE Coordinator or Project manager
as the need arises.

DISIPLINE: HEALTH, SAFETY & ENVIRONMENT

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  Ensure that employees are provided with necessary PPEs for their jobs.
 Ensure that competent persons are used for the erection, modification and
dismantling of scaffolds
 He must have had specific training in and be knowledgeable about the structural
integrity of scaffolds and the degree of maintenance needed to maintain them.
 He must also be able to evaluate the effects of occurrences such as a dropped
object, or a truck backing into a support leg that could damage a scaffold

5.4 SCAFFOLD USERS

 They must comply with relevant HSE policies and procedures as they concern use of
scaffold
 They must be trained on work at height
 Scaffolding users will report damaged scaffolds, accessories, and missing or lost
components to the scaffolding supervisor or HSE officer within the area for
immediate rectification.
 Users will assist with inspections as requested and will not work on a platform until
it has been inspected by a competent person before every use.

6.0 SCAFFOLDING
6.1 TYPES OF SCAFFOLDING
6.1.1 Bracket scaffolding
A working platform supported by steel brackets attached to and supported by a wall
or other part of a building or structure. Usually on steel tanks, 'slip' formwork or
cottage work.

6.1.2 Cantilever scaffolding

Scaffolding erected from beams, which protrude beyond the face of the building or
structure.

6.1.3 Frame scaffolding

Fabricated units consisting of standards, transoms and braces which are welded
together to form a rigid and complete unit.

6.1.4 Heavy duty scaffolding

Scaffolding erected for use by bricklayers, stonemason, or other similar trades.

DISIPLINE: HEALTH, SAFETY & ENVIRONMENT

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6.1.5 Independent scaffolding
Scaffolding consisting of two rows of standards connected together longitudinally with
ledgers and braces and transversely with transoms or putlogs.

6.1.6 Medium duty scaffolding

Scaffolding erected for use by fitters, carpenters, plasterers, glaziers, illuminated sign
erectors, tilers, slaters, steam cleaners, cleaners, welders, or service installation
workers, where ducting and other loads are to be placed on the scaffolding.

6.1.7 Mobile scaffolding

Scaffolding consisting of four or more standards and mounted on castor wheels.

6.1.8 Modular scaffolding

Fabricated units consisting of standards, ledgers, transoms, putlogs and braces, made
of metal, which are capable of being assembled into scaffolding of predetermined
shapes.

6.1.9 Putlog scaffolding

Consists of a single row of standards connected together by ledgers. Putlogs are
fixed to the ledgers and built into the wall of the building as the bricklaying progresses.

7.0 FITTINGS

There are many different designs patented by various companies including Acrow, Big
Ben, Boulton, Burton, Cyclone, Mills, Norstel, Presco, SGB (Scaffolding Great Britain).
Scaffolds fittings shall be of Class A conforming to BRITISH STANDARD BS1139 and EN74.

Some of these companies have fittings in more than one design, e.g.:
Acrow - drop forged and pressed steel
Cyclone- 'Quick-grip', 'Little giant' and 'Tight-grip'
Mills 3 kinds of bolt in original fitting and a later design with a bent bolt
Norstel Drop forged steel and aluminum alloy
SGB Pressed steel with loose keeper plate and 'drop forged'.
All fittings and tubes must comply with requirements of NLNG.

DISIPLINE: HEALTH, SAFETY & ENVIRONMENT

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Ladder brackets are not permitted.

 Ladders should not be joined or tied together to make longer.

 A ladder (other than a steel trestle ladder) shall not be used to support a working
platform.
 A single ladder, extension ladder or extension step ladder (when used as an
extension ladder) shall be used for access only and a person using any
such ladder shall not carry anything by hand; but must maintain three (3)
point contact

The more ladders are used the more they should be inspected. One should make
a habit of checking a ladder before ascending or descending. Ladders on construction
worksite in continuous use should be checked every day and thoroughly inspected
every week (7 days). The inspection is to detect shakes in the timber, loose or cracked
rungs, decay, corrosion of metal parts etc.
Not more than one (1) workman or other person shall be on a ladder at any one time
and when ascending or descending, such workman or person shall face the ladder.
A ladder with components, which are broken, split, loose or otherwise defective shall
not be used, and shall be immediately removed from the site following procedure. There
shall be a checklist for ladders inspection on a widely basis and a 6 Months colour coding
routine. Moreover ladders shall be visually inspected on every use and defective ones
shall be isolated.
7.1 SCAFFOLD PLANKS

The minimum sizes of scaffolding planks to be used on this Project are:

a) 38mm thick x 225mm wide between not to exceed 4 metres constructed of

hardwood EC maranti. Planks will also provide with a nail strip attached to each

end so as to prevent splitting. All planks must support in at least three positions

and the distance between these supports will not exceed 1.5metres.

b) The planks must be of sound timber and should not project more than 150mm,
nor less than 50mm, past the supports. All scaffold planks will be securely lashed
at each end with a non- flammable type material.
When ordering planks or other timbers, always specify that they must be free from the
following defects.

DISIPLINE: HEALTH, SAFETY & ENVIRONMENT

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  "Short Grain" which roughly includes spiral grain, diagonal grain and "dip grain"
 Brash or carroty grain
 Knots; especially large knots, or groups of knots
 Rot
 Shakes, splits, cracks, gum-veins and notches.

It is very important to be able to recognize these defects and to appreciate the

circumstances in which timber, having minor effects, may be safely used. Formply will
not be used in any circumstance to make up part of a working platform.
8.0 REGULATIONS COMMON TO ALL SCAFFOLDS

8.1 FOUNDATIONS AND

SOLEPLATES Foundation
A scaffold shall be constructed on sound foundations.
Note: The load at the base of a standard of a high scaffold may exceed 2 tonnes. A
load of this magnitude can cause subsidence in the average ground if not properly
distributed over a sufficient area. If necessary the soil should be rammed tight before
laying the soleplates.
Particular Precautions
Particular precautions shall be taken with respect to footpaths. Footpaths in which
services have been laid are particularly hazardous. The presence of manhole covers,
outlet valves, etc. can locate services.
Soleplates
In most cases when erecting a scaffold on the ground or on a footpath, a continuous
soleplate on 200mm x 38mm timber will be satisfactory. It may be necessary to
increase the thickness and the area of the soleplate in bad ground.
The joints in the soleplates should be located within the middle third of the bay length.
At the ends of the scaffold the boards should project at least 600mm beyond the last
standard.
Soleplates are not usually required on concrete surfaces, except concrete pedestrian
footpaths, but base plates are used to prevent damage to the concrete surface.

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 Suspended Floors
Before erecting a scaffold on a suspended timber or concrete floor or other
structure, the strength of the floor or structure shall be checked by a competent
person and if necessary, strengthened or tommed.
Where continuous soleplates cross an access or doorway used by pedestrians,
they shall be ramped or in-filled to prevent a tripping hazard.

8.2 STANDARDS

Standards shall be pitched on base plates and shall be vertical. Joints in standards
should be staggered and should not occur:
 In adjacent standards in the same lift
 In the same standard in adjacent vertical lifts or more than once
between any two adjacent ledgers.
 Joints in standards should be arranged so that they occur as near as possible to a
ledger.
 Standards of the Scaffold should be well plumbed.
8.3 LEDGERS

Ledgers shall be fixed preferably on the inside of the standards with right angle
couplers and shall be horizontal. Joints in ledgers should be staggered and should not
occur:
 In horizontally adjacent ledgers in the same bay
 In vertically adjacent ledgers in the same bay
 In the same ledger in adjacent bays
 Ledgers shall not be joined in the end bays of scaffold.

8.4 DECKING (PLANKING)

8.4.1 General
Every working platform shall be at least 4 planks wide. At the working level the
scaffold shall be closely boarded across its full width of the scaffold.
Planks should be butted (on all scaffolds except circular structures);

However, when lapped boards are used, beveled pieces to minimize the risk of
tripping should be fitted at the laps.

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 All Platforms, gangway, etc. shall be kept clear of any loose materials that are not
required for immediate use.
Space between platform and existing structures such as column, walls, pole, etc
should be well closed to avoid drop object. Toe-board / guardrail should be provided if
there a risk of falling from height.
Ever board or plank forming part of working platform shall not protrude beyond its
support to more than 150mm unless it is sufficiently secured to prevent tipping.
8.4.2 Methods of Securing Planks
Recommended methods of securing planks are:
 Cleats - should be fixed on the underside of the planks or if on top in positions
where they would not create a tripping hazard.
 Lashings - should be of a non-flammable type shall be secured so that the
tripping hazard is minimized.
8.5 GUARD RAILS AND TOE BOARDS

Guard rails and toe boards shall be provided in accordance with the following
requirements:
 Guard rails and toe boards shall be provided at the outer edges and ends of all
scaffolding from which a person could fall a distance of 2m or more.
 Guard rails shall be fixed between 900mm and 1m above the working
platform, measured from the top of the guardrail to the top of the planks. A
scaffold board on edge shall be fixed beneath the guardrail to form a toe board
height of approximately 200mm above the top of the planks:
 Guard rails and toe boards should be fixed on the inside of the standards, viz.
the rails with right angle or putlog couplers and the toe boards with clips or
putlog couplers.
 The gap between the bottom edge of a toe board and the scaffold planks shall
not exceed 12mm.
 Where the working platform does not extend across the full width of the transom
or putlogs, the guard rail and toe board shall be fixed not more than 150mm
outside the outer edge of the platform or puncheons shall be fixed to transoms
or putlogs. When fixed to ledgers a puncheon shall be fixed to at least two
ledgers.

DISIPLINE: HEALTH, SAFETY & ENVIRONMENT

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  Where the distance between the ledger of a working platform and an adjacent
wall exceeds 225mm a guardrail and toe board shall be provided as above.

8.6 LADDER ACCESS TO SCAFFOLDS

Ladders shall comply with the appropriate Nigerian Statutory Regulations and the
following DEUX’S requirements, as appropriate:
 Every ladder shall stand on a firm and even base and be supported only by the
stiles. Where practicable the ladder should be set at a slope or 4:1 (vertical to
horizontal).
 A ladder shall be securely held at the top by fixings to the stiles and shall be so
secured that it cannot move from its top or bottom points of rest.
 A ladder shall project at least 1m above the landing place with the landing rung
level with or slightly above the landing platform. A ladder rising a vertical height of
more than 7m shall be provided with an intermediate-landing place. The vertical
distance between any two successive landing places shall not exceed 7m.
 There should be at least 200mm vertical and horizontal clearances behind each rung
of a ladder to permit a safe foothold to be obtained when ascending and descending.
 Each landing place shall not be less than 1400 x 700mm and shall have
guardrails. Gaps in guardrails left for access to landing places should be as small as is
reasonably practicable.
 Landing places shall not be used as working platforms or for the deposit of materials.
 For ease of escape in event of emergency, provide more than one access ladder to
any platform capable of having five (5) personnel and above.
8.7 GIN WHEELS FOR SCAFFOLDING ERECTION

The following recommendations for the use of gin wheels apply when the load to be
lifted does not exceed a mass of 50kg:
 In the case of an independently tied scaffold, the supporting tube should be
attached to two standards. In the case of putlog scaffold the supporting tube
shall be connected to a standard and braced back to the level of mature
brickwork. The point of suspension of the gin wheel should not project more
than 600mm beyond the outer support of the supporting tube.
 A ring-type gin wheel is preferable.

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  If a hook-type gin wheel is used it should be shackled to the supporting
tube and not hooked into a tube or into a coupler. The hook should be closed to
prevent it coming out of the shackle.
 A coupler should be placed either side of the ring or lashing to prevent movement.
 For loads of mass in excess of 50kg the support shall be specially designed and
approved by NLNG.
8.8 ROPES
All materials / tools shall be hoisted up or down using rope.
The rope used on a gin wheel shall not be less than 18mm circumference and will be
of a type acceptable to NLNG.
8.9 PROTECTIVE COVERS
If a weather cover or other sheeting material is to be attached to a scaffold. It should
be specially designed to withstand the mass of the additional material and the wind
forces imposed. Where such additional loading is added to the scaffold structure
particular care shall be taken with bracing and ties. On exposed sites, more ties
may be required than are specified in these regulations.
8.10 WORKMANSHIP
Standards should be set accurately in the horizontal with gauge rods and vertically
by using a spirit level or plumb line at each lift. Ledgers should be set horizontally
with a spirit level, or by using horizontal lines on the building.
All scaffold couplers shall be tightened with a scaffold spanner.

Note: The use of spanner or tool that gives leverage greater than that of the tool
recommended is liable to cause damage to screw threads with the result
that not only will the grip of the coupler on the tube be impaired, but
also the coupler may be rendered unserviceable.

Scaffolding shall be erected with due regard and care for the buildings involved.

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8.11 INSPECTION
The Scaffold Inspector shall inspect scaffolds upon completion and thereafter on a
weekly basis. Additional inspections will be required after periods of adverse weather
such as rainfall and high winds etc. The scaffold shall be braced and tied to form a
stable rigid structure.

The following points shall be checked:

 Planks. Planks sometimes tend to creep on a scaffold.

 Check that this has not happened and created hazards.
 All working platforms shall be fully planked out.
 Traffic damage.
 Check lower section of standards for traffic damage
 Crane damage.
 Check general alignment of scaffolding for crane damage
 Ties.
 Ensure that all ties are in position as installed by the scaffolders
 Check the soleplates to ensure that there has been no subsidence and that all
the standards are firmly footed.

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 CHECKLIST FOR SCAFFOLD INSPECTION (KEYS: YES NO NA)

Components Checks Components Checks

1. TIES Correct spacing 10. Guard Rail Properly Fastened
Fastened to two ledgers Stop ends
Load Bearing Fittings Used Correct height
2. Base Firm ground 11. Toe Boards Fastened Twice
Sole Plate Stop end Boards
Base Plate 12. Ladders BS1 129:2010 Grade 1
3.Standards Plumb 1.1m above platform
Spacing Correct angle
Staggered Joints Tied Twice
Foot Ties 13. Gin Wheels / Ropes Correctly tied to
scaffold
4.Ledgers Horizontal Correct Rope Size
Lift Height 14. Beams Chord stiffeners
Staggered Joints Purlin Spacing
Sleeves Bracings
5.Transoms Correct Spacing’s Connections to
Scaffold
Correct Fittings Rakers
6.Sway Bracing Complete to top Load bearing fittings
Intermediate Fittings 15. Rakers Tied Back
Sleeves Load Bearing fittings
Every 5th Bay Check fittings
7.Ledger Bracing Complete to top 16. Loading Check Grid
Alternate Pair of Standards 17. Fittings Tight
Close to node point Correct Selection
8.Plan / Knee Bracing Correct fittings Correct use
Complete through area 18. Housekeeping Tidy site
Close to node point Materials off lifts
9.Working Platforms Complete platform Walkways clear
Butted boards

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 Tied Boards
All BS 2482:2009
Boards

9.0 METAL TUBE SCAFFOLD SPECIFICATIONS

9.1 METAL TUBES
All metal tubes used in scaffolding shall:
 Be straight and free from indentations, corrosion or other defects
 Have ends that are clean cut and square with their axes
 Be free from burrs and bevels

9.2 STEEL TUBES

All steel tubes used in scaffolding shall:
 Be manufactured by the process known as the Continuous Weld Process
 Be round pipes with an outside diameter of at least 48.3mm and a wall
thickness of at least 3mm
 Have permissible dimension tolerances of
 Outside diameter plus 0.4mm and minus 0.8m

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  Wall thickness plus 15% and minus 10%

9.3 ALUMINUM TUBES

All aluminum tubes used in scaffolding shall:
 Be of extruded aluminum, and have a tensile strength of not less than 262.5MPa,
with a 0.2% proof stress of not less than 241.5MPa; the elongation measured on a
gauge length of 50mm shall be not less than 8%.
 Be round pipes of at least 48.3mm outside diameter, having a wall thickness of 4.5
mm
 Have permissible dimension tolerances of
 Outside diameter, plus and minus 0.31mm
 Wall thickness, plus and minus 0.23mm

9.4 FITTINGS OR DEVICES

A fitting or device used in tubular metal scaffolding shall be of a type approved by NLNG.

9.5 COUPLERS
A coupler used in scaffolding shall:
 Have no threaded blind holes
 Be such that when assembled, but before tightening, no part can be detached by
inadvertent action
 Have a tightening bolt of not less than 12mm in diameter with a hexagonal nut
 Have a washer not less than 1.5mm thick fitted beneath
 Be provided with a rib or recess not less than 1.5mm in height to prevent
the bolt and washer from being displaced from the coupler, unless the
geometry of the fitting positively holds the bolt in position
 Where a hinge is provided, have a hinge pin not less than 8mm in diameter
 Be not less than 3mm in any section of the body or flap
 Accurately embrace over the whole area of its bearing surfaces the member or
members on which it is used.

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9.6 TUBULAR METAL SCAFFOLDING

Tubular metal scaffolding shall consist of:

 A number of standards fixed by transoms and ledgers
 ledgers supporting putlogs or transoms
 Platform planks laid on putlogs or on transoms, and be braced and tied to form
a rigid and stable structure.

Tubular metal scaffolding shall not exceed 30m in height unless the weight of the
scaffold is relieved by spurring or by other approved means.

Tubular metal scaffolding shall have standards spaced not more than:
 1.8m apart for heavy duty scaffolds
 2.4m apart for medium duty scaffolds
 3.0m apart for light duty scaffolds.
 With joints that do not occur:
 In adjacent standards in the same lift
 In the same standard in adjacent vertical lifts
 More than once between any 2 adjacent ledgers.
 Founded on base plates and where necessary on sole plates or on an
equivalent base construction
 Straight throughout and set up in a vertical plane
 Where necessary, provided with suitable guards or fenders to prevent
damage from any source.
 Tubular metal scaffolding shall have ledgers:
 Clamped to the standards with right angle couplers
 Spaced not more than 2m apart on a standard
 With joints that do not occur:
 In vertically adjacent ledgers in the same bay.
 In the same ledger in adjacent bays.
 Continuous throughout the whole length of the scaffolding, except
where access is provided

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  Fixed in a horizontal plane.
 Tubular metal scaffolding shall have putlogs that are:
 Set horizontally above each ledger
 Fixed to each ledger either by right angle couplers or by putlog clips
 Placed so that:
 They are not more than 230mm from a standard
 There is one on each side of every standard.
 In the single lengths
 Scaffolding as defined, placed so that spans do not exceed 1.5m.
 In position until that portion of the scaffolding is dismantled, but a
transom may be substituted for 2 putlogs on each side of a standard.
 Where a detachable blade fitting is used in tubular metal scaffolding to support
the putlog on a wall the detachable blade fitting:
 Shall be placed with the blade in a horizontal plane
 Shall be fixed beneath the putlog
 Shall bear not less than 75mm on the wall.
 Tubular metal scaffolding shall have ties that are:
 Attached by right angle couplers:
 In the case of putlog scaffolding, to the standard or ledger
 In the case of independent scaffolding, to the outside and inside standards or
ledgers
 And in each case as close as possible to the junction of the standards and
ledgers located no further than one bay from the ends of the scaffolding and
in every third bay but this spacing may be increased to every sixth bay if:
 A system of horizontal diagonal plan bracing is added between the ties on the
underside of the ledgers at the level that ties occur.
 Any joints in the span of the ledgers forming part of the horizontal diagonal
plan bracing are positively secured by means of a splice tube and 2 swivel
couplers.
 Located in the first lift of the scaffolding and at vertical intervals not the
first lift of the scaffolding and at vertical intervals not exceeding 4m.
 Tubular metal scaffolding shall be braced by means of:

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  Face braces that are attached to the external row of standards of the
scaffolding and
extend to the full length and height of the scaffolding
 Transverse braces that are attached diagonally in every lift joining the internal
and external standards.
 At both ends of the scaffolding
 At intervals not exceeding 15m.

9.7 LOADING OF TUBULAR SCAFFOLDING

Tubular metal scaffolding shall not carry more than 2 working platforms across the
full length of the scaffolding though shorter working platforms may be carried in
different positions on the frame if the total load of the shorter working platforms,
but in any event the total load on a platform in a bay shall not exceed.
 625kg in the case of a heavy duty scaffold
 430kg in the case of a medium duty scaffold
 180kg in the case of a light duty scaffold.

9.8 METAL FRAME SCAFFOLDING

 In this clause "frame" means a fabricated metal unit consisting of standards,

transoms and braces welded or otherwise fixed together to form a rigid and
complete unit.
 A frame used in scaffolding shall be of a NLNG approved type.
 In addition to being in accordance with this Schedule, scaffolding using frames
shall be of an approved type and shall consist of frames that are:
 tied together by a continuous ledger that:-
 is fixed to the external standard of each frame
 is spaced at vertical intervals not exceeding 10m.
 spaced either not more than 2m apart in the case of heavy duty scaffolding
or not more than 2.4m apart in the case of light duty scaffolding
 provided with adjustable base plates where the ground or surface is not level
 braced in each panel on both the internal and external faces of the scaffolding.
 A scaffolding consisting of frames shall be erected and used in accordance with
clauses
12.7 and 12.8 as if it was a tubular metal scaffolding.

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 9.9 MODULAR SCAFFOLDING
In this clause:

 "Modular members" means standards, ledgers, transoms, putlogs and

braces made of metal that are capable of being assembled into scaffolding of
pre-determined shapes.

 A modular member used in scaffolding shall be of an approved type.

 In addition to being in accordance with this Schedule, scaffolding using modular

members shall be of an approved type and shall:

 Be erected, braced and used as is approved

 Be erected and used in accordance with clause 12.7 and 12.8 as if it was a
tubular metal scaffolding

 Have adjustable base plates where the ground or surface is not level

 Be planked with planks designed for that modular system.

9.10 CIRCULAR STEEL STRUCTURES AND TANKS

Scaffolding shall not be supported by a steel tank or circular steel structure unless:
 Lugs or saddle pieces of mild steel are welded to the surface of the tank to receive
the hooks of the scaffolding platform
 The scaffolding platform is supported from the lugs or saddle pieces or mild steel by
brackets:
 That are made of mild steel angle not less than 44mm x 44mm x 5mm or mild
steel tube of equivalent strength and rigidity and that are spaced with centers not
exceeding 2.5m apart on the tank face
 That incorporate hooks formed by 50mm x 6mm mild steel that attach to the lugs
 That have an upstand with welded attachments to accommodate 2 guard rails or
lifelines; and the working platform:
 Has platform planks that conforms to NLNG Requirements is fitted with a rigid
guard rail 1m above the working platform and a mid rail, or, where lifelines
are used instead of rigid guard rails, the lifelines are not less than 16mm in
diameter cordage rope or 12mm diameter flexible steel wire rope and are
secured at each upstand with a maximum allowable sag of 50mm.

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 9.11 NEED FOR BRACING AND TYING
Any scaffold consisting simply of standards, ledgers and transoms is not a
rigid or stable structure. Every scaffold shall be effectively braced to make it rigid,
and tied or guyed to make it stable.
Scaffolds Tied to Buildings
Generally on putlog and independent type scaffolds erected adjacent to buildings or
other structures, providing effective ties at regular spacing to the building ensures the
stability of the scaffold as a whole. The outside row of standards shall be diagonally
braced; if the ties are properly installed, bracing is not required on the inside row of
standards.

Free-standing Towers
On freestanding towers bracing may be required in three planes to ensure the stability
of the structure.

Bracing
Every scaffold shall be braced by means of longitudinal and transverse bracing systems
so as to form a rigid and stable structure.
Putlog and Independent Scaffolds
Every scaffold shall be braced by means of longitudinal and transverse bracing systems
so as to form a rigid and stable structure.

Face Brace
The face brace shall be attached to the standards with swivel couplers and shall
extend from the base to the top of the scaffold.
The swivel couplers for the bracing shall be fixed to the standards as closely as possible
to the ledger couplers. The angle of the brace shall be pitched to form a diagonal
across the bays.

Distance between Braced Bays

The maximum distance between the braced bays in any lift of a scaffold shall not exceed
10m.

Length of Brace
The brace member shall be continuous except when it is necessary to change the
direction of the

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 brace. Sleeve or joint pin couplers or parallel couplers may join lengths of tube.

Alternative Bracing
As an alternative to face bracing a scaffold may be braced by zigzag face bracing in
the end bays of the scaffold and in intermediate bays not more than 10m apart
along the length of the scaffold.
In addition to the face or zigzag bracing required above, transverse bracing ('heel
and toe' braces) shall be provided at each end of the scaffold.
Heel and toe bracing shall also be installed at intervals of not more than ten bays
apart on large scaffolds.
9.12 TIES
Every putlog and independent scaffold shall be effective tied to a building or adjacent
structure to prevent movement of the scaffold either towards or away from the
building or structure. As the inside face of an independent scaffold is not normally
braced, the ties shall be sufficiently rigid to prevent any longitudinal movement in the
scaffold structure as well as tying it to the building.

Vertical Support
Ties should be positioned when practicable to give vertical support to the scaffold so
that in the event of damage to the scaffold standards, e.g. by falling material or by a
vehicle running into the base of the standards, the scaffold will 'hand on the ties'.
Ties through Window Openings
Tie through window openings, etc, should be fixed at sill level, alternately hard against
the left- hand and right-hand reveals.
Fixing of Ties to scaffold
Ties shall be fixed either to both standards or to both ledgers with right-angle
couplers as close as possible to the standard/ledger junction. Where ties are
attached to standards they shall be so placed as to cause a minimum obstruction
to any working platform erected at that level.
Spacing of Ties
Vertical spacing of ties shall not exceed 4m.

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 Ties shall be fixed at each end of the scaffold or one bay in from each end and at
intervals along the length of the scaffold as set out in attached sketches and table

TABLE - SPACING OF TIES

Horizontal spacing of
Height
of ties
Scaffol Between ground level Between 15m level Between 30m level
And 15m level and 30m level and 45m level
Up to 15 Every 3rd standard - -

15 to 30 Every 2nd standard Every 3rd standard

Above 30 Every standard every 2nd standard every 3rd standard

Scaffolds exceeding 15m Height

When it is known that a scaffold is to exceed 15m in height, ties shall be fixed
initially on every standard or every second standard to suit the requirements for
the full height of the scaffold. Additional ties should not be fixed as the scaffold rises.

Additional Bracing
When due to the difficulty in attaching ties to a building or structure, the tie
spacing specified above cannot be complied with, additional bracing shall be
provided in the scaffold between tie points as specified below:
 Plan bracing. Where it is impracticable to fit ties at the horizontal spacing
specified, plan bracing shall be provided between the possible tie points. The
bracing shall be preferably fixed to the standards with right-angle couplers;
alternatively they may be fixed to the ledgers with swivel couplers
immediately below the ledgers. Even with such plan bracing fitted, the
distance between tie points shall not exceed every fourth standard.
 Heel and toe bracing. Where it is impracticable to fit ties at the vertical
spacing specified, heel and toe bracing shall be provided between the tie
points. The bracing shall be fixed to the ledgers with right-angle couplers
adjacent to the standards.
 With such bracing the distance between tie points shall not exceed 12m or six(6)
lifts.

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  When it is intended to use plan bracing or heel and toe bracing, it may be
necessary to install temporary ties or takers to ensure the stability of the
scaffold during the initial erection period.
 When plan or heel and toe bracing is used the ties shall be capable of
carrying the extra load which will be imposed upon them.
9.13 FRICTIONAL ANCHORS

The use of commercial-type frictional anchors is not permitted for securing scaffolding
ties.

9.14 REVEAL TIES

The use of reveal ties is not permitted without prior approval from DKES.

9.15 Extreme Weather Conditions

Where gale force winds are expected it may be necessary to install additional ties
to those specified above and to splice the braces and ledgers.
10.1 MOBILE SCAFFOLDS

Construction

 Check all the ledgers and transoms to ensure they are the same length. This is
done by laying the ledgers and/or transoms on a level surface and marking the
correct length with a piece of chalk. A right angle coupler can then be fixed at
each mark on each tube. This will ensure that the couplers are the same distance
apart and will assist greatly when squaring the scaffold.
 Check the ends of the standards to ensure that the pin of the castor can be inserted.

 Fix the bottom ledger to the bottom of the two corner standards for each side
then stand the four corner standards vertical. (The ledgers to be on the inside of
the standards).
Note:
It is important that the right angle coupler securing the ledger to the standard is fixed
as near to the bottom of the standard as the internal parts of the castor assembly
will allow.

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  The end transoms are then fixed inside the end standards and hard down on
top of the ledgers.
 Lift the frame (consisting of four corner standards, two transoms and two
ledgers) and insert the castor wheels.
 Diagonal plan bracing (commonly known as spider brace) is now fixed as near as
possible to the bottom of the corner standards leaving one end of each loose in
its fitting.
 Check the frame is square by making the diagonals equal length and tighten fittings.
 Fit a swivel fitting where the braces cross, to secure them together.
 Ledgers and transoms can now be fitted to the next lift.
 Fit diagonal face braces leaving top end of each loose in its fitting.
 Check diagonal and plumb and tighten fittings Repeat 9, 10 and 11 to height required.
Note:
Whether the scaffold is erected in the following sequences will depend on the size of the
scaffold.
 If the scaffold is to be 2 bays long, standards will be required to be fixed to the
ledgers mid- way between the corner standards and the transoms to the first
lift fixed outside the end standard.
 Fix a short tube near the center of each bottom ledger to prevent a sag while
the rest of the scaffold is being erected. Ensure there is a slight camber upwards
in the bottom ledgers.
 Erect a mid-standard on each side by fitting to base and first ledger.
 Fix a transom between the standards and under the ledger.
 Fix four braces from the transom to the outside transom of the first lift i.e. one to
each corner of the first lift.
 After tightening the braces and adding safety fittings, the short center tube support
can then be removed.
 Diagonal plan bracing is fixed as near as possible to the bottom of the corner
standards.
 Putlogs are placed either side of the center standard at the required distance. At
each end of the scaffold it is permitted for the end transoms to act as putlogs.
 The rest of the scaffold is then completed in the normal way.
 Right angle couplers are used throughout the scaffold except for putlog couplers
securing the putlogs to the ledgers, a swivel coupler in the spider brace, and
swivel couplers on the face bracing.

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  Mobile scaffolds maximum height versus narrowest external base dimension
must be in a 1:3 ratio
 Ladder access should be internal and fixed to the narrowest side
 All mobile scaffold wheels to be braced or locked whilst the tower is in use
 All Materials must be removed from the scaffold tower before the tower is moved
 Mobile scaffold MUST only be used on ground level.

11.0 TOWER SCAFFOLDS

Towers can be constructed with either frame scaffolding or tube and coupler
scaffolding. However, only tube and coupler towers are dealt with in this section.
Towers are usually erected around cantilever hoists to support the protective mesh
and sliding mesh gates. Also towers are often used as access ways with a series of
landings and ladders or stairs erected within the tower.
A tower is basically 4 parallel trusses on end and joined in the form of a box.
The load on a horizontal truss is downwards, but when set up vertically; the loads
(wind, impact, etc) could be either way and must comply with the following
requirements:

11.1 ERECTION
Towers generally consist of four standards with horizontal members (ledgers) and
diagonal bracing fitted on each face. The braces are fixed to the ledgers with right
angle couplers.
The tower should be started in the same way a 'Mobiles' in Section 13.0, items 1 to
11 (except 2 and 5, which apply to the fixing of castors).
It is a good practice to use a spreader to set the diagonal. This should be done at
each lift, to prevent corkscrewing of the tower.

11.2 TIES
Ties to a building must be in the form of a truss.
Truss’s can be constructed using tube members or wire tension members.

11.3 GUYS
Where guys are used in lieu of ties, the guys are to be FSWR of at least 12mm in
diameter and are required at each corner and every 10m in height and should be
anchored at a distance from the

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 base of approximately 1.5times the height of the tower.
They should appear, in the plan, as straight-line continuations of the diagonals of the
tower.
Guys are to be effectively secured to the corner posts, or verticals, of the
tower and to anchorages.
An eye is formed in the guy with wire rope clips.
A turnbuckle with closed eyes is used for final adjustment of tension and locked
to prevent accidental slackening.

11.4 ANCHORAGES
Pickets which present a face of 100mm to the ground and driven 1.5M into normal
soil, will have a safe load of about 350kg.
For loads from 1 to 2tonnes, a post anchorage or block anchorage is more secure.

11.5 ACCESS TOWERS

Landing places which should be no more than 6m apart are formed by fully decking
the platform which must be not less than 1,400mm x 700mm. Gaps in guard rails
and toe boards left for the access ladder shall be as small as possible.

12.0 CANTILEVER SCAFFOLDS

12.1 GENERAL
Cantilevers, or needles, project from a structure to support various types of
scaffolding outside the building, with a restraining force on the inside.
Both the support and the restraint must be adequate and assessment is based on
the principle of a lever. This principle must be clearly understood.
The principle of the first order lever is used in various scaffolds including:
 Boatswains chairs
 Heavy and light duty suspended staging
 Top support for hanging or 'drop' scaffolds
 Base supports for various metal scaffolds.
The first 3 applications will be dealt with in later sections.
Conventional scaffolds based on cantilever supports may be tube, frame or modular.

DISIPLINE: HEALTH, SAFETY & ENVIRONMENT

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 The total load at the fulcrum is the sum of the load at the outer end and the counter
load. If this
total load is excessive there may be a requirement to check the fulcrum point to
ensure it will adequately support the total load.
The ability of the building to carry the loads imposed must be assessed by an engineer
or other qualified person.
The approximate mass of tube scaffold components are listed below. This information
is needed in order to calculate the total load on a cantilever support.

TUBE 3.0m, 4 kg/m

FITTINGS Right angle coupler, 1.5kg

Swivel couplers 1.4kg
Putlog clip

0.6kg End to end couplers

1.0kg

NOTE:
Fittings may be averaged at 1kg each for putlog scaffolds and 1.5kg each for
independent scaffolds.

PLANKS
225 x 32 Jarrah 10 kg/m
225 X 32 Wandoo 7 kg/m
225 x 32 Oregon 5 kg/m
200 x 38 Maranti 10 kg/m
The above list is also useful in assessing the mass of materials for transport calculations.

12.2 COMPETENCY
All scaffolds must be erected by trained and competent personnel who has
undergone the CITB Basic Scaffolder Part 2 or Equivalent. Scaffold is listed among
the key Safety Critical Roles and so Competency shall be in line with NLNG’s
Competence Requirement for Safety Critical Roles.
Unauthorised alteration is prohibited and consequence management will be given to
personnel found doing so.

DISIPLINE: HEALTH, SAFETY & ENVIRONMENT

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 The total load at the fulcrum is the sum of the load at the outer end and the counter
load. If this

DISIPLINE: HEALTH, SAFETY & ENVIRONMENT

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 Only trained Competent Personnel shall erect Scaffold for DEUX in NLNG.

ERECTOR
1. Minimum SSSCE/WAEC
2. Scaffold Trade Test
3. 2 years Cognate Experience
SCAFFOLD TEAM LEAD
1. Minimum SSSCE/WAEC
2. Scaffold Trade Test
3. Basic CISRC or Equivalent
4. 5 years Cognate Experience
SCAFFOLD SUPERVISOR
Scaffold Erector/Inspector 1. Minimum OND
2. Scaffold Trade Test
3. Basic CISRC or Equivalent
4. 5 years Cognate Experience
5. CISRS Supervision Certificate or Equivalent

SCAFFOLD INSPECTOR
1. Minimum OND
2. Scaffold Trade Test
3. Basic CISRC or Equivalent
4. 3 years Cognate Experience
5. Basic CISRS Certificate in
Inspection or Equivalent

13.0 SCAFFOLD INSPECTION TAGS

13.1 General

A designated competent person shall inspect scaffolds before each shift prior
to use. The competent person shall fill out the inspection tag and attach it to
the point of access. Also, scaffold materials shall be inspected prior to use by
NLNG. Scaffold tag shall be inspected daily before work or immediately following
any repairs or alterations. The Supervisor/Inspector will be required to validate the
Scaffold tag after seven days.

DISIPLINE: HEALTH, SAFETY & ENVIRONMENT

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 13.2 Inspection Register:
A Register of Inspected Scaffold shall be maintained on Site and it shall
show date of Inspection, due date for revalidation and name of Inspector.

Scaffold tags for revalidation shall contain these underlisted information shown
below;

SCAFFOLD
TAG

14.0 PERMIT-TO-WORK (PTW)

DISIPLINE: HEALTH, SAFETY & ENVIRONMENT

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All Scaffold activities on this Project shall be undertaken only after a valid PTW has been signed and
obtained.

15.0 LAST MINUTE RISK ASSESSMENT (LMRA):

An LMRA must be done on Site prior to the commencement of all Scaffold activities.
It shall be done by sharing Safety controls from the JHA and cascading permit
conditions from the PTW to all the affected workers. A Last Minute evaluation of the
Site conditions shall be done to ensure site conditions are safe and Dynamic Risk
Assessment (DRA) is done at this point on Site.

16.1 EMERGENCY RESPONSE PLAN

 The Site Supervisor (or Designate/foreman) takes control of the situation
 The Site Supervisor raises the emergency alarm by calling 3999. All Workers
safely stop work and turn off all equipment and briskly walk to the Muster Point
 The Safety Officer or Supervisor (or a worker assigned to the task) barricades the
incident scene
 The NLNG Fire Team would mobilize to Site and effect a Rescue at Height.

17.0 AUDITING PROCESS

The DEUX HSE Unit shall schedule and carryout Audits to determine the effectiveness,
compliance and strict adherence to this procedure.
The non-compliance shall be treated as an unsafe act, the job stopped and
corrective actions undertaken immediately. Situation to be recorded in DEUX’s Hazard
Identification Report (HIR) for analysis and further action’
The shortfalls or lack of effectiveness shall be recorded and procedure review initiated.

DISIPLINE: HEALTH, SAFETY & ENVIRONMENT

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18.0 HIGH RISK SCAFFOLD

Access scaffold shall be regarded as high risk if,

1. The scaffold exceeds 5.4 Metres in height

2. The scaffold is mounted on movable platforms
3. The scaffold is hanging or is a slung scaffold
4. The scaffold is used as a loading platform over 2.0 KN/M2
5. The scaffold is used as lifting gantries.

Such scaffolds as described above shall be rated as high risk and shall have a design plan
by a competent scaffold designer.

19.0 RESCUE PLAN

External scaffolds exceeding 6Metres in height shall be regarded as high risk

and rescue plan shall be provided as follows:

1. Access point shall be provided at Interval not exceeding 15metres

2. Medical Evacuation (MEDIVAC) Platforms shall be erected as cantilever scaffolds
attached to the existing scaffold at strategic positions.
3. Such medic platforms shall be large enough to size medivac stretcher and at least 2
other personnel’s.
4. A rescue rope or line shall be positioned on the platform along first aid kits.
5. A designated first aider shall at all times be in place and other workers be trained on
suspension trauma Emergency Response and Rescuing.
6. Emergency numbers should be boldly displayed at strategic places especially at the
medivac platforms.
7. Fall from height drill shall be carried out on routine basis as a mitigating measure.
8. Cranes and Ambulances shall be available at all times.

Appendix 1. CHECKLIST FOR DETERMINING STANDARD OR DESIGNED

SCAFFOLDS

DISIPLINE: HEALTH, SAFETY & ENVIRONMENT

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 DISIPLINE: HEALTH, SAFETY & ENVIRONMENT

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Appendix 2. Details of Scaffold Maximum Span, Standard and Working Plan

DISIPLINE: HEALTH, SAFETY & ENVIRONMENT

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