INTERRA is a repair service provider in Egypt established in 2011. They have experience performing repair, maintenance, and fabrication jobs for petroleum and non-petroleum sectors. Their services include mechanical work, electrical work, engineering consultancy, and supply of spare parts. They aim to be the most efficient and qualified entity in repair and maintenance. Their fields of service include various repair techniques like cold welding, polymer repair, electrochemical plating, metal spraying, and hot welding. They have experience repairing equipment like valves, tanks, pipelines, pumps, compressors, and more. Their goal is to support customers through reliable repair and maintenance services.

2. Who We Are:
INTERRA is a Company established in the year 2011, as the local repair
service provider in Egypt for special repair projects.
We have performed many repair jobs, Maintenance Jobs and fabrication for
petroleum and non petroleum sectors.
We have a good activity for providing tools, equipment, spare parts and
chemicals.
Why INTERRA:
During the past years, the Egyptian industry has been significantly enlarged
and improved. Obviously, the need of having strong supporting services
national entities had became top priority.
INTERRA company had been established to serve both Petroleum and non
Petroleum Industry to be always as a supporting team STANDING BEHIND
OUR CUSTOMERS.

3. Our vision
To be the most efficient and qualified entity
in the fields of repair & maintenance for
petroleum & non-petroleum sectors & always
possess our customers satisfaction

4. INTERRA Fields of services and applications:

5. Our Commitment
Assure the quality and technical integrity of our equipment
and services so that they are fit
for purpose and that Our functional specifications matches
and even over matches the customer’s requirements.
conduct our operations with zero risk to personnel,
property or environment and always eager to enhance our
systems to accommodate different and up to date models
of Tech., commercial, QA/QC & HSE implementations,
through cont. auditing, customers experience sharing, and
out sourcing consultants.

6. Our partners, Suppliers & Manufacturers:

8. Our Package Of Services
We are able to support our customers in one of the following activities:
Mechanical Activity
Electrical Activity
Engineering Consultancy
Supplying of spare parts, tools and well head equipment's

9. General Procedures Tree

10. Brief on Metallurgy & Metal
Diseases/Failures

13. Stainless Steel Diagram

14. Material Selection Main Criteria

15. Weld Decay (HAZ – Heat Affected Zone)

16. Metal Wear
Definition:
Is the removal of material from solid surface as a result of sliding action (Parts movement)
Forms of wear:
The principal/main forms of wear based on either its production OR operation (mainly we speak
about operation failures & sorts of wear)
Adhesive wear
It takes place during sliding; regions of adhesive bonding called (Junction) form between two
sliding surfaces. If one of these junctions doesn`t break along its original surface then a chunk
(Particles) from one surface will be transferred to the other surface forming adhesive wear.
After while this particle come off loose from the sliding surface and part after part it cause a
system failure.
The proper solution is always checking the greasing & use a proper lubrication.
Results of adhesive wear:
WEAR-OUT Mode: occurs after long period of sliding as too much material been removed
SEIZURE MODE: occurs in a system which particles size larger than clearance which results in
jamming the system

18. Abrasive wear
It occurs as result of movement of hard/sharp surface to softer one and produces grooves & deep
scratches.
The abrasive agent might be part of the surface or different agent such as sand/dust, etc…
Abrasive wear is similar to adhesive wear in response & propagation but has different coefficient of
wear (mostly deeper).

19. Corrosive wear
This form of wear produced as result of sliding movement inside a corrosive environment, when sliding
action is in continuous movement it removes the protective coat layer of the metal, leave fresh
substrate against the corrosive media, which lead to rapid removal of metal particles.
Type of corrosive wear:
1- BIMETALLIC Corrosion: when two metals are in contact (different material) the more reactive in
electricity versus less reactive one, the more reactive dissolves to protect it.

21. Cavitations Corrosion:
turbulence of flow gives high potential to form cavities within liquid resulting in
cavitations erosion. Collapse of these cavities produces shock waves resulting in
corrosion & pitting of surface. (results produced as an impact of stagnant pressure,
which transfer pressure to Vapor pressure with instant temperature up to 500C, in
certain cases)

22. Impingement/Velocity corrosion:
rough surfaces such as most of cast iron surfaces are exposed to impingement corrosion
much more than other surfaces because of high surface roughness. When fluid hits such
surface the flow became turbulent and results in impingement thereby accelerating the
erosion of metals and might lead to cavitations corrosion later on.

23. Entrainment corrosion:
Particles in suspension in any fluid system can result in rapid deterioration when the
system is being operated as result of particles/solids blasting against metallic surface
causing entrainment corrosion & metal losses.

24. Crevices & pitting corrosions:
it occurs on surface of metals as result of oxygen reaction with substrate, main different
that pitting is taking place on plane surface, CREVICE corrosion takes place in pockets.
Knife Line Attack:
it’s very familiar to be existed inside half filled steel water tanks, the line of corrosion is the
reaction between (Oxygen + bare steel + static level of water) seems very sharp & straight
line.

25. Surface fatigue wear/corrosion cracks:
This type of wear occurs as a result of cracks/hair cracks/subsurface crack formation &
growth; most of ball bearings, gears, wheels on rails suffer from same crack until failure.
Failure usually appears when a large particle leaves place as result of this crack growth.

26. Conclusion:
From all of the above and other reasons/types of metal defects (misalignment, bending,
buckling, cold cracks/hydrogen embrittlement, porosity & holes, segregations, shrinkages,
inclusions, etc…) that affect the operation, it is evident & proven by all operating sectors
(industrial, oil & Gas, irrigation, water treatment, chemical manufacturing, steel industry,
transportation, electricity, etc…) that metal defects are a predominant problem, and its
existence cost those operating houses (shut down time, replacement of new parts, labor
costs, decreasing production, etc…) which resulted in losing money to fix it, so from our
long experience it was proven that
``PROTECTIVE IS MUCH CHEAPER THAN CORRECTIVE``.
It’s always cheap & recommended to protect your new/semi-new equipment that to repair it
after failure, but if you have arrived to failure its better to rebuild, protect & restore the part
to service or to be a stock item condition B/C better than scrap it and purchase new part.
(especially while possibility is existed to recover it to service)

27. Pray & Coffee Break

28. Various Mech. Techniques & Methods

29. Types of Protection & Repair Methods

30. By using cold welding Technology INTERRA can perform
repairing and maintenance of various tools and equipment
for, but not limited to oil and gas industry for any part
MADE OF METAL.
Cold welding Tech. can withstand high internal pressure up
to 300 Bar and compressive stress over 3000 Bar this beside
high Temperature up to +/- 280C in dry conditions.
The process can also be conducted in hazardous area up to
API Zone - 0 as well as underwater.
COLD WELDING Tech.

31. Polymer Repair Applications

32. Polymer Repair Applications

33. INTERRA is the sole agent in Egypt , Morocco and
Algeria for the French PETROSEAL products that
enables ACOTS to carry out
successful leak sealing repair under pressure and
in presence of hot vapor , hydrocarbons or acids.
The repaired seal can be done
under high temperature and pressure up to 700C
and 240 bar.
ON-LINE LEAK SEALING

34. Generally we could say: `` ANY PART MADE OF METAL``, but
always avoid high knocking, hummering, high vibration rates,
rather than that it could be used with any ROTATING or
STATIONARY equipment, such as:
•Tanks corrosion *Vessels & Desalters *Pumps
• Pipe line corrosion repair, pitting repair & strengthing
•Compressors *Shafts *Valves (Shell & Parts)
•Transformers *On-Line Leak Sealing compounds & clamps
•Etc…
Components to be repaired by Polymer Tech.

35. INTERRA is representing a French technology that
is specialized in metal repairing and protection
since 1940. This technology is used in a wide range
of applications to repair, rebuild, and protect the
metal surface. It's used intensively in Aero Space
maintenance and manufacturing companies as
Boeing & Airbus, Electricity Sectors in rotors,
turbine shafts, Blades, etc…,In Oil & Gas Sector in
most of rotating or fixed parts, in Rail ways for
axles and traction motors, and most of power
sectors.
ELECTRO CHEMICAL PLATING & Metal Spray

36. Samples Of Applications

37. Components to be repaired by Plating OR Metal Spray
Plating Technique:
Could be used for any part of
metal rotating or stating.
(Shafts, valve component, pistons,
journals, bearings, crank shafts,
axles, etc…)
Recommended to be used when:
1- Defect in microns (1 – 1000
Microns)
2- with all elements and alloys
3- no grinding required after it
4- no dynamic balancing required
after it.
5- High Temp. & corrosive
application as well as high wear
resistance
Metal Spray Technique:
Could be used for any part of
metal rotating or stating.
(Shafts, valve component, pistons,
journals, bearings, crank shafts,
axles, etc…)
Recommended to be used when:
1- Defect in microns (0.5 –10 mm)
2- with all elements and alloys
3- grinding required after it
4- dynamic balancing required
after it.
5- sealing of porosity required
before grinding.
6- high temp & corrosive
applications

38. INTERRA is using the specialized hot welding technology and
techniques in most of metal Parts repair, and the automated
techniques in re-tubing of heat exchangers (bundle/straight).
The experts we have and selectivity of electrodes, welding
process and welding techniques are the reason that makes us a
leader company in such these applications.
Hot Method has its advantages and disadvantages, but hiring
the technique with the well knowledge of what & when to hire
is the most effective point and one of the main factors to
eliminate the disadvantage of a technique.
HOT WELDING

39. Samples Of Applications

40. INTERRA workshops have most of the equipment and machines
that help us to enhance our support to our valuable customers
through the selective machines
we have that works in work shop for fabrication as a production
lines or/and in-situ machines to easiest and support our
customer with his demands.
Machinery lines are considered part of repair lines – not as
production lines – but as finishing stage and some times
customized manufacturing are mandatory for our repairs and
maintenance, based on METALLURGICAL analysis and
behaviors we select our alloys that is equivalent to original one.
Fabrication & Machining

41. Samples of repair
applications

42. Well head
RePaIR
One of the most critical jobs that we had passed
successfully through.

43. Before (Gauge lost)
Annuals is open to air
After complete sealing

44. ValVeS RePaIR
INTERRA is able to recoverjunkvalves forservice on
metallurgical scientifically basis.

45. Before

46. Dismantle & Inspection

47. Gate & Seat Inspection

48. Through Repair Process

49. After Repair & Final Inspection

50. Assembly & Hydro Test

51. ACCEPTED & READY FOR DISPATCH
Thousands of valves been recovered
To sTock again on condiTion b/c
saving millions.

52. 36`` gas valve on-line leak
sealing

53. VALVE leaking through bolts as result of
sour gas corrosion

54. Cleaning & Degreasing
Using Anti-spark Hand
Tools

55. Apply Polymer Repair Method to Bolt & Nut

56. After Repair & Final Coat
Savings:
1- Complete Shut Down
2- Purge of line
3- Dismantling of valve (Position
is very critical)
4- Assembly of new valve (Cost
of new valve & spacers)
5- Production Cut
6- High safety expenses &
precautions.
Conclusion:
Saving Production=Saving
Millions Of USD

57. WaTer filTer repair

58. Before

59. After

60. compressors, pumps,
impellers & shafTs repair

61. SH-TFT Compressor Before

62. Compressor after repair

63. Before Through After Repair
SonelGas Compressor

64. UTBS Plant Pump Volute Before

65. Degreasing, Blasting Inspection & Polymer Repair

66. Pump After Repair & Coating

67. Before Through After
Multi Stage Pump Impeller Shaft Repair

68. Fertilizers Plant Pump Housing & Impeller repair
- Production Raw Sulphoric Acid

69. After Repair, Interior/Exterior Coat (Chemical Resistance)
& Impeller Dynamic Balancing

71. Oil StOrage tankS repair

73. Floating Roof Tank Cracked
Before Through After

74. Oil Tank Drain Line leak repair
Before Through After

75. 10`` Riser Thickness restoration
Before Preparation Through After

76. REPSOL 10`` Pipe Line Leak Repair & Insulation
Leak sealing Preparation After Final Protection

77. Oil deSalter bOttOm cOrrOSiOn
repair & prOtectiOn

78. Before (Inspection & Preparation)
Through Repair
After 7 Years In Service

79. HigH dam turbineS repair

80. Inside Turbine Before Repair

81. During & After Repair

82. tranSfOrmerS leak repair &
cOating

83. Before & Leaking

84. After Leak Sealing After Complete Coating

85. plating & metalizing SampleS
SHaftS, turbine bladeS, drumS,
ballS, etc…

86. SULZER Turbine Before & After
Gas Turbine Housing Before & After

87. Compressor Shafts Crank Shaft
Engine Block Seats Center

88. Egypt Rail Ways Crank shaft 12 journal Bearings Gear Box Seats

89. INTERRA wishes to represent its
gladness and pleasure to present the
previous material & its experience
which we do hope it would be in a
beneficiary position for your services
during the near future, and our
representative are always ready to
handle all of your inquiries.

90. audiOnS QuetSiOnS ?