The document outlines the construction execution plan for an oil and gas plant, detailing methods, monitoring procedures, safety measures, and environmental considerations throughout the project. It serves as an educational tool for stakeholder engagement, commitment from site teams, and induction training. Various construction processes, equipment used, and safety guidelines are highlighted, providing a comprehensive overview of project management and execution in the oil and gas sector.

1. Oil & Gas Plant Construction
Project Execution Plan
Details of how a Gas & Oil Plant is constructed, and how the progress, safety and quality is monitored and controlled. Also the measures to
ensure that the site is environmentally friendly.
http://www.slideshare.net/DavidHMoloney/oil-gas-plant-construction-project-execution-plan
https://www.youtube.com/watch?v=PiRY0ERoXfI
6avid H Moloney
4th August 2016
Brief Description
The purpose of this presentation is to give an understanding of
the Methods, Plant and Sequence to construct a Gas & Oil Plant
.
This presentation can be used to engage Stakeholders and to get
the Site Teams commitment to the programme. Also can be
used for Induction Training and as a way to capture and share
knowledge.
Project Execution Plan (PEP) details how a project will be
executed, monitored and controlled.
High in Educational Value and easily understood. Recommended
for Continuing Professional Development (CPD)
This Video Presentation is innovative and has many beneficial
uses.

2. Table of Contents

3. Contents

4. Gas Processing Facility
Earthworks includes Excavation, Trenches, Haulage, Grading Backfilling, Filling & Compaction
Earthworks

5. Excavate & Load Tipper Trucks

6. Trench Excavation with Stepped Faces

7. Trench Excavation with Battered Faces

8. Tipper Trucks Unloading

9. Spreading & Compaction Clay fillEarthworks

10. Spreading & Compaction Clay fillEarthworks

11. Backfill TrenchEarthworks

12. Dozer Pushing ClayEarthworks

13. Dozer Ripping GroundEarthworks

14. Excavator with Hydraulic RockbreakerEarthworks

15. Excavate & Load, Cart, Tip & Return
Brief Description
Cycle Time for 7km haulage distance
using an Excavator 45 tonne weight
and Dumper with a 40 tonne capacity,
the cycle time is 34 minutes
Earthworks
7 minutes
14 minutes
3 minutes
14 minutes 7 km
7 km

16. CABC ( Crushed aggregate base course )
Earthworks
Mixing Plant
Testing Compaction
Site Trial

17. Mixing CABCEarthworks

18. Spreading & Compaction CABC ( Crushed aggregate base course )
Earthworks

19. Spreading & Compaction CABC ( Crushed aggregate base course )Earthworks

20. Spreading & Compaction CABC ( Crushed aggregate base course )Earthworks

21. Rock - Excavability
The excavability of rock depends mainly on the rock strength and the layer thickness.
This diagram shows excavation methods for rock of various strengths and thicknesses,
with a free face.
ⓒ David H Moloney

22. Contents

23. Insitu Piling Construction - Plant & Methods
3D image to show Plant.
For construction details see my YouTube Channel
Plant & Equipment
Crawler Crane
Piling Hammer
Casing
Piling Rig
Concrete Pump
Concrete Mixer Trucks
Tremie Pipe
Reinforcement Cage

24. Piling Construction - Plant, Methods & SequencePiling

25. Piling Construction - Plant & MethodsPiling

26. Pile Load Test
ⓒ David H Moloney
Piling

27. Sheet Pile Shaft Temporary to Support Excavation
Drive Sheet Piles Excavate & install bracing
Construct Concrete Structure Backfill, remove bracing & sheet piles
ⓒ David H Moloney

28. Sheet pile Temporary Shaft
ⓒ David H Moloney
GeneralItems
3D Animation to show Sequence

29. Secant Pile Construction - Sequence, Plant & Methods
3D image to show Sequence, Method & Plant.
For construction details see my YouTube Channel
ⓒ David H Moloney

30. Diaphragm Wall Construction - Sequence, Plant & Methods
3D image to show Sequence, Method & Plant.
For construction details see my YouTube Channel
ⓒ David H Moloney

31. Contents

32. Jetty for Oil Tankers
ⓒ David H Moloney
Marine

33. Quay Wall
ⓒ David H Moloney
Marine

34. Breakwater
ⓒ David H Moloney
Marine

35. Dredging & Reclamation
ⓒ David H Moloney
Marine

36. Contents

37. Reinforced Wall Construction Sequence
3D image to show Sequence, Method & Plant.
ⓒ David H Moloney

38. Reinforced Wall Construction Sequence
ⓒ David H Moloney
Concrete

39. Reinforced Structure Construction Sequence
ⓒ David H Moloney
Concrete

40. Reinforced Construction Tank Sequence David H Moloney
ⓒ David H Moloney

41. Oil Interceptor
Miscellaneous
Used to capture oil / fuel from leaks or spillages that are washed down
drains every time it rains.

42. Oil Interceptor
Concrete

43. Excavation for Underground Pump stationEarthworks
Brief Description
Faces of excavation Stepped &
Well-point Dewatering used.

44. Contents

45. Main Equipment
Path of Construction 45
Slug Catcher
Generators – Gas Turbine Flares
Liquid Train Gas Train Compressors

46. The Pipe Racks carries pipes and cables.
The pipes contain gas and liquids that are transported to and from the
different processes.
Pipe Rack

47. Piperack Construction Animation
The Pipe Racks carry pipes and cables
between the different processes..

48. Pipe Rack

49. Pipe Rack - Expansion Loop
49

50. Gas Processing Facility
Hanging Scaffold
Stairway Tower
Pipe Rack – Scaffold Underslung

51. Pipe Rack under construction

52. The slug catcher buffers the incoming gas and liquid, from the wellheads, it
also separates the gas from the liquid.
Slug Catcher

53. Slug Catcher Construction Sequence Animation
Separates the Gas from the Oil & Water
Also to dissipate any pressure surges

54. Slug Catcher

55. Storage of Oil & Water
Steel Circular Tanks Construction

56. Steel Storage Tank
ⓒ David H Moloney
StructuralSteel

57. Steel Circular Storage Tank – Construction ⓒ David H Moloney

58. Contents

59. Piping Spool Fabrication
Piping Spools are pre-fabricated from pipes and pipe fittings in fabrication shops to
reduce on site fabrication costs and provide better quality.

60. Spool Fabrication in Workshop
Pipework

61. Pipe Spools examples

62. Spool Fabrication on site
Pipework

63. Post Weld Heat
Treatment
Non Destructive
Testing
Cut
Bevel
Fit-up
Weld
NDT
PWHT
Blasting
Painting
Spool Fabrication Steps

64. Welding Trials

65. Welding
Fit up Clamp

66. Spool Fabrication - Pipe Rolling & Cutting Table
Pipework

67. Spool Fabrication Spool Rolling & Welding
Pipework
W. Soule & Company USA

68. Spool Fabrication - Automatic Welding with Pipe Rolling
Pipework
W. Soule & Company USA

69. Welding Positioner / Turntable
Pipework
Anyeke.com.my

70. Contents

71. Erect Flares / Columns & Vessels

72. Cranes Heavy Lift Animation
Lift column from the horizontal and
rotate into the vertical

73. Gas Processing Facility
Erect Flares / Columns & Vessels - 3D Simulation

74. Flares / Columns / Vessels Erection
Path of Construction 74
Demag CC180-1 300 t crawler crane
72m boom & 42m luffing jib
Tandem Lift to tilt flare
from horizontal to vertical
Trunnions
Main
Lift
Crane
Tail
Crane

75. Contents

76. Electrical Sub Station 3D Model
3D Model – Used to provide a better understanding

77. Main Substation Horizontal Cross section
Transformer Bays
HVAC Room
Heat, Ventilation, & Air Conditioning
Battery Room
UPS
Room
Local
Equipment
Room
Chillers

78. Electrical Sub Station
3D Model - Horizontal cross sections moving upwards

79. Electrical Sub Station
3D Model - Vertical cross sections moving along building

80. Structural Steel Building Single Storey
3D images to show Construction Sequence.
ⓒ David H Moloney
Step 1 Set-out Grid Lines Step 2 Holding Down Bolts Step 3 Erect 1st Bay
Step 4 Erect 2nd Bay Step 5 Erect following Bays

81. Steel Building Single Storey
ⓒ David H Moloney
StructuralSteel

82. Structural Steel Building Multi Storey
ⓒ David H Moloney
Step 1 Set-out Grid Lines Step 2 Holding Down Bolts Step 3 Erect 1st level use core for stability
Step 4 Complete 1st Level Step 5 Erect following Levels Step 6 Plumb & Align Structure
3D images to show Construction Sequence.

83. Roof Covering
ⓒ David H Moloney
StructuralSteel
Brief Description
Sequence is
Fix bottom sheet
Fix Vapour barrier
Fix Top Hat section and clips
Fit Insulation
Fix top sheet

84. Roof Covering
ⓒ David H Moloney
StructuralSteel

85. Roof Covering
ⓒ David H Moloney
StructuralSteel

86. Roof Covering
ⓒ David H Moloney
StructuralSteel

87. Contents

88. Onshore Gas Pipeline Construction Sequence
Gas Processing Facility

89. Construction of Azerbaijan Oil Pipeline 42” by 450km.
Overview Construction Sequence
A typical sequence of activities is- surveying and setting out, preparing the land, stringing out the pipes along the
route, excavating the trench, welding and laying the pipes, backfilling the trench with the excavated soil, and
reinstating the land to its original condition.
.
Crossing Railway, Roads, Rivers, etc.
Pump Station

90. Oil Pipeline 42”
Contents
Overview
Surveying & Setting Out
Clearing & Grading
Double Jointing i.e. welding 2 pipes together
Stringing out Pipes
Bend Pipes for changes in direction sideways and up & down
Welding Pipes into a string, Test Weld by X Ray.
Anti-corrosion Coat to Joints
Trenching i.e. excavate trench
Lowering pipe string into trench
Backfilling Trench
Reinstatement of Pipeline ROW (Right-of-Way)
Reinstatement of River Banks
Crossing - Horizontal Directional Drilling
Crossing - Thrust Boring
Crossing - River
Hydrotest & Pigging
Tie-in i.e. connect to existing pipeline
Miscellaneous
Pause Slides to Read

91. Overview Pipeline Construction Animation
To see animations, view YouTube film.

92. Cable laying 132KVa Electric

93. Cable Laying
Pipework
Brief Description
132 kVa Cable laying .

94. Cable Laying
Pipework

95. Cable Laying
Pipework

96. Cable Laying
Pipework

97. Contents

98. Horizontal Directional Drilling
Pipework
Brief Description
Horizontal Directional Drilling under a taxiway.
Process
1. A pilot hole id drilled to the designed profile
2. A reamer is pulled back through the hole to enlarge it
3. A pipe string is pulled into the hole.

99. Horizontal Directional Drilling
Pipework

100. Crossings – River, Motorway & Rail
Pipework

101. Overview Pipeline Crossings Construction Animation

102. Micro Tunnelling
Tunnels

103. Micro Tunnelling Sequence David H Moloney
ⓒ David H Moloney
Tunnels

104. Contents

105. Includes Sequence, Methods & Equipment
Road Construction

106. Road Construction Sequence Animation

107. Asphalt Pavement

108. Includes Sequence, Methods & Equipment
Fencing & Gates

109. Fencing
ⓒ David H Moloney
Sequence of Construction
Clear Scrub & Grade ground
Fix Corner & Strainer Posts
Fix Intermediate Posts
Fix Line Wire, Chain-link & Razer wire
Concrete ground beam

110. Fencing
Miscellaneous

111. Fencing
Miscellaneous

112. Fencing
Miscellaneous

113. Fencing
Miscellaneous

114. Contents

115. Setting out & Surveying

116. Setting out & Surveying

117. Contents

118. Emergency Phone Numbers & Response
Health,Safety&Environment

119. HSE Monitoring & Reporting - Dashboard Dashboard is a single page, graphical representation of
current HSE Issues and historical trends
Health,Safety&Environment

120. Safety Precautions
Health,Safety&Environment

121. Safety Documents
Health,Safety&Environment
Safe System of Work.
To provide a safe system of work is a legal requirement. What this means is that before you ask an employee to do a
job. You ensure that he has received training, has the appropriate personal protective equipment, the work area is safe
and he is unlikely to be injured or cause damage by carrying out the assigned task.
Project Management Plan for Health, Safety, Security and Environment. also Known as (HSSE Plan)
The Project HSSE Management Plan details how safety on site will be managed.
Project Procedures for Health, Safety, Security & Environment
Details the safe way to undertake a task
Methods Statements
Are prepared in advance of starting work, to plan a Safe System of Work on site for all activities that carries a risk. The
contents of a Method Statement, typically include:- Scope & Location of the Works, Programme, Roles & Responsibilities
of Staff. Resources, Work Methodologies and Risk Assessment.
Slide 1 of 2

122. Safety Documents
Health,Safety&Environment
Safety Risk Assessments
Are prepared to identify and evaluate risks, to adopt control measures to reduce or eliminate risks.
COSHH Sheet
The purpose of the Control Of Substances Hazardous to Health sheet is to identify how to prevent or adequately control
workers exposure to hazardous substances.
Permit to Work.
Is a management system used to control high risk activities by ensuring safety measures are in place prior to starting
work.
Types of work for which permits will be required include:
Excavation and the digging of trenches.
Working at height, including on roofs.
Working in confined spaces, for example entering a manhole.
Hot work, which is welding, soldering or cutting steel with angle grinders or by gas torch.
Slide 2 of 2

123. Safety Training on Site
Miscellaneous The purpose of safety training is to provide the knowledge necessary to
perform a job safely

124. Safety Training Matrix
Miscellaneous The purpose of safety training is to provide the knowledge necessary to
perform a job safely

125. Emergency Response Drill
HSE
Drills and exercises are used to rehearse anticipated emergency scenarios

126. Exposed Existing Underground Utilities
ⓒ David H Moloney

127. Existing Underground Utilities & Overhead Cables - Safety Measures
ⓒ David H Moloney
Health,Safety&Environment

128. Trench - Safety Measures
Health,Safety&Environment

129. Trench - Safety Measures
ⓒ David H Moloney
Health,Safety&Environment

130. Site Safety Posters examples
Health,Safety&Environment

131. Personal Protective Equipment (PPE)
Health,Safety&Environment
Personal protective
equipment (PPE) is
protective clothing,
helmets, goggles, or other
garments or equipment
designed to protect the
wearer from injury or
infection

132. Environmentally Friendly Site Air, Noise, Water & Soil PollutionHealth,Safety&Environment

133. Water Pollution PreventionHealth,Safety&Environment

134. Segregation of WasteHealth,Safety&Environment
Segregation of waste for proper disposal and
recycling. Less waste goes to landfill and
hazardous waste is treated to make it safe.
Colour Code for Skips & Bins

135. Putting Waste Concrete to use
ⓒ David H Moloney
Health,Safety&Environment Precast bases for signs and hoarding,
Precast blocks for walls.

136. Contents

137. Staff Directory
Brief Description
List of staff and their
contact details

138. Daily Work Record
Brief Description
Daily Work Records showing the
allocation of resources, materials and
work activities carried out daily.

139. Organogram
Brief Description
Shown are the line and
lateral relationships
between the various team
members and their relative
position in the site
organisation.

140. Filing System

141. Quotations Comparison Sheet

142. Staff Responsibility Matrix

143. Contents

144. Quality Assurance Dashboard Dashboard is a single page, graphical representation of
current statistics and historical trends

145. Site Laboratory
Generalitems

146. Contents

147. Progress Monitoring & Reporting - Dashboard
ⓒ David H Moloney
Dashboard is a single page, graphical representation of current progress and historical trends

148. Programme for Construction
Gantt Charts to plan and schedule projects

149. Primary Substation-
Chiller Plant
Pump House
IRRIGATION WATER TANKS
Irrigation Pump House-
POTABLE/FIRE WATER TANK
Programme using Timeline & 3D Images
Airport Central Utility Yard

150. Pump House
Piling

151. Primary Substation-711
Chiller Plant-714
Pump House-
715
Irrigation Pump House-
716

152. Primary Substation-711
Chiller Plant-714
Pump House-
715
IRRIGATION WATER TANK
Irrigation Pump House-
716

153. Primary Substation-711
Chiller Plant-714
Pump House-
715
IRRIGATION WATER TANK
Irrigation Pump House-
716

154. Primary Substation-711
Chiller Plant-714
Pump House-
715
IRRIGATION WATER TANK
Irrigation Pump House-
716

155. Primary Substation-711
Chiller Plant-714
Pump House-
715
IRRIGATION WATER TANK
Irrigation Pump House-
716
POTABLE/FIRE WATER TANK

156. Time Chainage Diagram The chart has two axis: one for time and the other for location
A legend explains meaning of the colours, symbols and line types
Sample Only

157. Histogram Charts for Resources & Outputs
Concrete, Manpower, TBM,
Manpower per Discipline Concrete per Location
Numbers for each month of the Project Quantity for each month of the Project
ⓒ David H Moloney

158. Plant & Equipment List & Worker’s Job Titles
ⓒ David H Moloney

159. Contents

160. Temporary Contractors Site Facilities
ⓒ David H Moloney
Brief Description
Site Offices, Camp Accommodation for
1,250 workers, Canteen, Recreation,
Fabrication shops, Stores, Plant Yard. In five
locations along the route.

161. Welfare Facilities
ⓒ David H Moloney
GeneralItems
Toilets – Washing
Canteen, Drying Room, Toilet & Generator

162. Site Hoarding examples
ⓒ David H Moloney
GeneralItems

163. Temporary Electricity Supply & Tower Lights
ⓒ David H Moloney
GeneralItems

164. Wheel Wash Drive-through
ⓒ David H Moloney
GeneralItems
Used to wash the wheels of trucks prior to leaving site.

165. Wheel Wash Drive-throughGeneralItems

166. Weighbridge & Sheeting Access
ⓒ David H Moloney
GeneralItems Access tower for covering tipper truck bodies to
prevent air pollution.

167. Dust Suppression
ⓒ David H Moloney
GeneralItems
Wetting the ground to prevent dust blowing in the wind

168. Dewatering
ⓒ David H Moloney
GeneralItems
Brief Description
Construction dewatering is the removal or
drainage of groundwater and or surface /
rain water usually by pumping to keep the
works dry.

169. Dewatering
ⓒ David H Moloney
GeneralItems

170. Quarry & Aggregate Production
3D image to show Sequence, Method & Plant. ⓒ David H Moloney
Rock is blasted free from a
quarry face and fragmented.
The blasted rock is crushed and
screened to produce different
size ranges of aggregates

171. Quarry & Aggregate ProductionGeneralItems

172. Concrete Batching Plant David H Moloney
ⓒ David H Moloney
Concrete batching plant comprises - concrete mixer, control cabin, silos for cement and fly ash, aggregate bins
and conveyor belt system to feed the mixer. Also aggregate storage bays and water storage tanks.
The mixing is computer controlled and has a dynamic screen display, showing the process. Material storage
capacity to match two days concrete production

173. Concrete Batching Plant
ⓒ David H Moloney
Concrete

174. Concrete Batching Yard 3 Nr MixersGeneralItems

175. Concrete MixGeneralItems
A concrete mix contains 5 major
elements: cement, water, coarse
aggregates, fine aggregates (sand) and
air in different proportion. Additional
elements such as pozzolanic materials (fly
ash, silica fumes or slag) and chemical
admixtures can also be incorporated to
the mix to increase its properties.

176. Reinforcement Cutting & Bending Yard David H Moloney
ⓒ David H Moloney
Reinforcement in 12 m lengths. Delivery in 3 ton Bundles Reinforcement cut to length by Shearing Machine
Reinforcement Bent to Shape by Bending Machine Reinforcement that is cut and bent is Bundled for delivery to work site

177. Reinforcement Cutting & Bending
ⓒ David H Moloney
Concrete

178. Contents

179. Notes

180. Production by David H Moloney
My YouTube Channel link: https://www.youtube.com/channel/UCeJR9J7svhBd-C0ZoAH2fhQ
ⓒ David H Moloney