RACI SPACER- PRODUCT INFORMATION
-
Upload
raci-srl-italy -
Category
Engineering
-
view
173 -
download
3
Transcript of RACI SPACER- PRODUCT INFORMATION
Raci S.r.l. Italy 1
RACI spacersinsulators rings for pipeline
Raci S.r.l. Italy 2
Company
Raci projects, produces and markets worldwide spacers since the 1975 (patented)
Raci S.r.l. Italy 3
Design and manufacturing
Company
Raci S.r.l. Italy 4
ISO 9001 Cerificate
Company
Raci S.r.l. Italy 5
They ensure electrical insulation between casing and carrier pipe
They fastened around the carrier pipe
make easier the insertion in the casing
Why pipeline need insulator rings?
Raci S.r.l. Italy 6
Technical reqirement of spacers
Spacers shall be made of material which do not conduct electricity and permanently resistant to chemical corrosion
Spacers shall be resistant to mechanical stresses and thermal shocks
Raci S.r.l. Italy 7
Characteristics of RACI spacers
Entirely made of polyethylene HD without any metallic part
Raci S.r.l. Italy 8
The ring can be mounted and then shaped around the pipe
Entirely made of polyethylene HD without any metallic part
Characteristics of RACI spacers
Raci S.r.l. Italy 9
Easy and fast assembling.
The number of elements depends by
the diameter of the pipe
The ring can be mounted and then shaped around the pipe
Entirely made of polyethylene HD without any metallic part
Characteristics of RACI spacers
Raci S.r.l. Italy 10
Each element is a flexible section with a toothed mail strap at one end and an appropriately toothed female on the other end.
This system allows the modular composition of rings according to different O.D.
RACI spacers can be used from 1” up to 140” O.D. pipe.
Characteristics of RACI spacers
Raci S.r.l. Italy 11
Physical characteristic
Raci S.r.l. Italy 12
Carrier pipe OD, coating included Casing internal diameter Crossing length Specific use of the pipeline Temperature
Ex.: gas, oil and water
To choose the right elements you need the following data:
Raci S.r.l. Italy 13
Different models: application ranges
Chose the type of elements according to the different diameter range shown in the table. You have to use the real outside diameter of the carrier pipe.
Raci S.r.l. Italy 14
Selection table sample
Raci S.r.l. Italy 15
How many rings?
If: L=crossing length
I =space between the rings (according to the selection tables)
then: 3I
LN
At the extremity of pipe we recommend
2 rings (in order to avoid problems
during the inserting operations)
Raci S.r.l. Italy 16
Different heights: why?
To guarantee better centring, the elements are available with different height (F25, F41, F60, F75…)
Different heights do not influence the spacer’s carrying capacity (E25 are stronger than F25, but F41 are not stronger than F25)
Raci S.r.l. Italy 17
How to define the spacer’s height
If: O.D. = carrier pipe outside diam. H = height of element s = tolerance (from 12 to 15 mm) i.d. = casing pipe inside diam.
..2.. disHDO
Raci S.r.l. Italy 18
Sockets on ductile iron pipes
Follow this formula:
ssocketDOHDO ..2..
Raci S.r.l. Italy 19
Technical data
Raci S.r.l. Italy 20
Long crossing (> 150 m)
In case of very long crossing or very heavy carrier pipes, we suggest particular elements named “E and H reinforced type”
Condition of E41R element after test on 400 m lenght crossing
Raci S.r.l. Italy 21
The distance between the single insulator ring is not fixed, but it must be changed in critical areas
Long crossing (> 150 m)
In case of very long crossing or very heavy carrier pipes, we suggest particular elements named “E and H reinforced type”
Raci S.r.l. Italy 22
Assembly – phase 1
Insert the male butt-strap (overlap: 3 teeth), using the number of elements required by carrier pipe O.D.
Raci S.r.l. Italy 23
Wrapping the ring around the pipe close it at the extremity
Assembly – phase 2
Raci S.r.l. Italy 24
Fasten the ring around the pipe guarantee the better result of the job
Our special tool is properly designed in order to obtain the better fixing
Assembly – phase 3
Raci S.r.l. Italy 25
Tools properly studied
Model EEE1 for F - G spacers
Model EEE6 for E - H spacers
Raci S.r.l. Italy 26
Icreasing grip by tape
In case of plastic carrier pipe (PVC-PE or smooth surfaces) it is necessary to tape the contact area between spacers and pipe in order to avoid movements during the insertion.
Raci S.r.l. Italy 27
End Seal
Once the carrier pipe is in the casing pipe the job have to be finished by two end seal at the extremities of the pipe
Two possible solutions: Espansit end-seal with stainless steel
straps or heat-shrinkable sleeves
Raci S.r.l. Italy 28
Espansit End Seal
Frustum type EKF
Normal type
Frustum type C
Raci S.r.l. Italy 29
Heat-shrinkable sleeves
Raci S.r.l. Italy 30
Experience on the yard
Raci S.r.l. Italy 31
Experience on the yard
Raci S.r.l. Italy 32
Experience on the yard
Raci S.r.l. Italy 33
Experience on the yard
Carrier pipe OD: 3200 mm
Raci S.r.l. Italy 34
Experience on the yard ADDA river
400 m length
6”x10”
A-B19 elements
Raci S.r.l. Italy 35
Experience on the yard Frustum type end seal
46”x56”
Raci S.r.l. Italy 36
Experience on the yard
Crossing length: 500 m
DN 600 Carrier pipe
Concrete casing pipe
CDE41R
Raci S.r.l. Italy 37
News
New universal clamp
Raci S.r.l. Italy 38
News Extension for P/Q
We can obtain spacer’s height of:
146 - 171 - 197 mm
Raci S.r.l. Italy 39
News Extension for M/N (antiflotation sytem)
Base element
(110 mm hight)
Extensions
(25 mm each)
Raci S.r.l. Italy 40
Typical customers
National Gas companies -Oil companies - Waterworks
(they issue the approval homologation)
Big Contractors(they normally use approved material by the Gas/Oil companies and Waterworks)
Small contractor – final customers (they normally use approved material by the Gas/Oil companies and Waterworks)
Raci S.r.l. Italy 41
ENDThanks for you time