§ huge SAVINGS of capitals: § MAINTENANCE FREE § LOW energetic costs § LIFETIME DURATION § less electric power needed § ELECTRIC current flow INTERRUPT § WITHOUT technical CHARACTERISTICS ALTERATION
§ O-RINGS SEALING SYSTEM
§ RECTANGULAR SHAPED SEALING
SYSTEM
§ U – SHAPE SEALING SYSTEM
Mechanical assembly needed to induce the right deformation
2 or 4 O-Rings between metal and insulating
Deformation/compression required is reached while compressing O-Rings against the rigid INSULATING spacer
a surface load higher than internal pressure
RESULT
TIGHT SEAL
ONE OF THE POSSIBLE SIDE EFFECTS IN THE LONG TERM COULD BE
FLUID LEAKAGE
O-Ring-walls rubbing rubber overheating O-Rings wearing and tearing
Surface load decreases - due to O-Rings shape deformation- up to becoming less than the internal pressure LEAKAGE
ABRASION
• Shaping
• Dimensioning
• Finishing operating pressures
• Temperatures
cause
O-Rings tear off
The structure deforms material looses flexibility
Surface load “P1” becomes less than pressure “P”,
FLUID LEAKAGE
EXTRUSION
Gas saturates the O-Ring at a certain pressure. If pressure suddenly decreases, gas gets rapidly expelled. That previously trapped in nano cavities expands violently O-Rings causing swell-up and bubbles
Explosive decompression could generate blisters, or tears O-Ring shape is deformed
Surface load becomes less than pressure, causing FLUIDS LEAKAGE.
EXPLOSIVE DECOMPRESSION
STRONG HOLDS
MICROSCOPIC PRECISION
STRICT TOLERANCES.
STRUCTURAL DEFORMATIONS
NOT WATERPROOFED
EXTRUSION
SHORTENING
WEAK POINTS:
LACERATIONS
CHEAP
NO PARTICULAR EQUIPMENTS
OF EASY PROVISION
SYMMETRIC SYSTEM
NO FAST PRESSURE CHANGES
One rectangular shaped gasket hardly compressed among the metallic surfaces, the metal and the insulating spacer
CHEAP EASY TO ASSEMBLY.
NO SURFACE FINISHING
WATER PROOFED
NO EXPLOSIVE DECOMPRESSION
NO EXTRUSION
SHORTENING
PRESSURE APPLICATION CIRCLE IS VERY HIGH
SPECIFIC EQUIPMENTS AND MOULDS
NON-SYMMETRIC SEALING SYSTEM
STRONG HOLDS WEAK POINTS:
Even widely used they experienced some inconveniences
NOT RECOMMEND for very
HIGH PRESSURES.
NUOVA GIUNGAS In the 70s, started to invest in R&D
to design new more efficient solutions. Time is ripe for the
U-shape sealing system
RGD Rapid gas decompression (Explosive Decompression)
17
Increasing the level of groove fill (≥ 90%)is one way to improve the resistance of a sealing elastomer
compound to RGD effects
In classical O-RING system, higher levels of fill may not be appropriate
for service ! O-ring must be fill max ≈2/3 of groove.
O-ring fill ≈2/3 of groove
DNV rules say …
20
O-RING SEALING SYSTEM PRIOR AND AFTER ASSEMBLY
DNV RULES REQUIRE AED/RGD CERTIFICATION FOR O-RINGS BECAUSE THE SYSTEM ARE SUBJECT TO RGD/ED EFFECT
SYSTEM ARE ENCLOSED IN A COMPLETELY CONFINED SPACE!
DNV RULES DO NOT REQUIRE AED/RGD CERTIFICATION BECAUSE THE SYSTEM ARE
NOT SUBJECTED TO RGD/ED EFFECT.
NUOVA GIUNGAS SEALING SYSTEM PRIOR AND AFTER ASSEMBLY
We have check i f i s t rue…
With comparative test based on NORSOK M710:2001
The Tests was carried out at the same time and in the
same condition on O-RING sealing system and on
NuovaGiungas U-Shape system manufactured with
standard FKM Compound (NOT AED!)
Test condition, fluid media, pressure and cycles: § Test Gas Mixture: 10% CO2 in CH4 § Test Temperature: 100°C § Test Pressure: 150 bar § The initial exposure period at 150 Bar: 72 hrs § decompression rate: 20 - 40
Bar/min. § Holding at atmospheric pressure(each cycle): 1 h (approx) § Holding at 150 Bar (each cycle): ≥ 23 hrs (+/-
1hrs) § Decompression cycles: 10
U-shape sealing system
TEST APPARATUS
25
GAS
O-RING samples
U-SHAPE samples
O-RING
Equivalent to NORSOK RATING#4
RGD results
U-SHAPE
Equivalent to
NORSOK RATING #0
RGD results
Nuova Giungas has developed different rubber compound § SUITABLE FOR: § GAS § OIL § STEAM § LOW TEMPERATURE § HIGH TEMPERATURE § AND OTHERS …
… and even if the system is not subject to the explosive decompression phenomena, a compound tested to Norsok M-710
NORSOK RGD
NGPR1201
NORSOK AGEING TESTS
Change in properties against time and temperature for Arrhenius model
Arrhenius model for life prediction
References
The NORSOK tests was carried out according to NuovaGiungas procedure N° 11522143
Test report N° 11511221
O-ring low pressures
small diameters
no bending, no tensile, no torsion and no compression
Rectangular
Only medium pressure.
U-SHAPE
NO SERVICE LIMITATIONS
THE VERY HIGH INVESTMENT IN SEARCH OF MATERIALS, EQUIPMENTS AND MOULDS
HAS BEEN SATISFYINGLY PAID BACK
A LESS EFFICIENT PRODUCT STRONGLY UNDERMINE, ORIGINAL SAVINGS.
A WIDE RANGE OF PRODUCTS ALWAYS AT STOCK …
BUT THAT'S JUST THE BEGINNING
10 BAR
25 BAR 100 BAR
ALL YOUR WISHES ARE OUR JOB
WE ARE ABLE TO MANUFACTURE JOINTS SUITABLE FOR ALL YOUR REQUESTS
WE HAVE ALWAYS SATISFIED OUR CLIENTS …
And we keep on doing it with our KNOWLEDGE able TO MEET every kind of REQUIREMENTS
NO LIMITS ON :
•Pressures
•Sizes
•Fluids
128” – WATER SERVICE
Relatore
Note di presentazione
128” Project: Opere di adduzione primaria dal serbatoio sul fiume Chiascio Ente: Ente Irriguo Umbro-toscano Cliente: SEAS Anno: 2004 1 pezzo Il giunto con diametro più grande mai realizzato
88” PN 100 BENI HAROUN PROJECT (ALGERIA)
Relatore
Note di presentazione
1x88” PN100 Con la sua grande stazione di pompaggio acqua grezza, la cui potenza è di 180 MW, la diga fornisce acqua potabile a più regioni limitrofe e acqua per l'irrigazione Anno: 2005 Il giunto più grande con maggior pressione mai realizzato
48” API 5L X100 SAIPEM – TAP PROJECT
Relatore
Note di presentazione
siamo unici ad aver fatto un giunto con tubo in API 5L X100 nel 2003 I 2 pipe sono stati fatti da 2 tubifici diversi ( Nippon steel e Mannesmann) The aim of the project is to develop Long Distance, High Capacity, High Pressure, High Grade technology solutions to achieve the following targets: distances of more than 3,000 km; gas transport volumes around 20-30 billion m3/year; pressures equal to or greater than 15 MPa � Launched in 2003 in cooperation with Snamprogetti/Saipem, Snam Rete Gas and Enitecnologie and finished at the end of 2007, The other pilot line has been realised at the Military Area of Perdasdefogu in Sardinia and comprises two tracts, with a diameter of 48 inches in high-resistance API 5L X100 steel. The test, which started in September 2005, involved the use of pressure levels floating between 140 and 150 bar which made it possible, over a testing period of 17 months, to simulate the behavior of an effective industrial infrastructure over an equivalent period of twenty years. � At the end of the testing program full scale detonation tests started. In June 2007 a test for the propagation of ductile fracture was performed in order to verify both the toughness properties of API 5L X100 steel and the ability of crack arrestors (specially designed) to stop the fracture. Also hydraulic tests were performed to assess the ability of pipes with defects to resist the internal pressure. The project was completed at the end of 2007.
GORGON UPSTREAM PROJECT - AUSTRALIA
Relatore
Note di presentazione
The Gorgon gas project is a natural gas project in Western Australia, involving the development of the Greater Gorgon gas fields, subsea gas-gathering infrastructure, liquefied natural gas plant and also includes a domestic gas component. Dal 6” al 34” da 260 a 360.5 Barg Anno: 2011 Posizionato a 200 fino a 1,300 metri di profondità in acqua The proposed project has attracted criticism from conservation groups in relation to the potential impact upon Barrow Island's ecology. The island is a Class A nature reserve, and home numerous other animals not found on the Australian mainland. Other concerns are related to the adequacy of quarantine procedures on Barrow Island to protect against the introduction of non-endemic species,[ and risks associated with geological sequestration of CO2.It was reported in November 2011 that native animals on Barrow Island had been accidentally killed daily with a known total of 1550 since construction began
DUPLEX CARBON STEEL
Relatore
Note di presentazione
Giunti con spool lunghi rivestiti internamente per fluidi molto conduttivi
WEST SACRAMENTO FORCE MAIN, PROJECT NEW NATOMAS & SOUTH RIVER PUMPING STATION
Relatore
Note di presentazione
WEST SACRAMENTO FORCE MAIN, PROJECT NEW NATOMAS & SOUTH RIVER PUMPING STATION: 2pezzi PN25 62” Anno: 2004
W A F A - M E L L I T A H
Relatore
Note di presentazione
Wafa – melita Dalla libia alla sicilia Primo grande progetto x valorizzare il gas natural della libia attraverso l’esportazione e la commercializzazione in europa Anno: 2003/2004 32” . 516 km
Relatore
Note di presentazione
Gazprom holds the world’s largest natural gas reserves. Gazprom accounts for 15 and 78 per cent of the global and Russian gas output accordingly. Range di giunti tra -40 e -60 °C
BLUE STREAM PROJECT
Relatore
Note di presentazione
Blue stream project: Pipe burial depth within maritime part is up to 2150 m Gas pipeline length is 1213 km trans-Black Sea gas pipeline that carries natural gas from Russia into Turkey. The pipeline has been constructed by the Blue Stream Pipeline B.V., the Netherlands based joint venture of Russian Gazprom and Italian Eni. The pipeline uses pipes with different diameters: mainland section 1,400 millimetres (55 in), mountainous section 1,200 millimetres (47 in) and submarine section 610 millimetres (24 in). The gas pressure in submarine section is 25 MPa (250 atm). 15 pezzi del 24” PN300 2 pezzi del 48” PN10
KPO PROJECT
Relatore
Note di presentazione
KPO project: 17 pezzi da 1” e 8” ANSI 2500 Anno: 2010 Kazakhstan Individuazione giacimento: 1979 Inizio lavori: 1984 Current production of oil 200,000 barrels per day Current production of gas: 650 million cubic feet per day in 1992, AGIP (now Eni) and the then British Gas (now BG Group) were awarded the sole negotiating rights, forming a partnership company. In 1997, Texaco (now Chevron Corporation) and Lukoil signed a production sharing agreement with the original two companies and the Kazakhstan Government. This is a 40-year agreement to develop the field to allow the production to reach world markets. This is done under a partnership company known as Karachaganak Petroleum Operating (KPO) where BG Group and ENI are joint operators with a 29.25% stake each in the company
TECHINT PERU - CAMISEA PROJECT
Relatore
Note di presentazione
Camisea 2004 The Camisea Gas Project extracts and transports natural gas originating near the Urubamba River in central Peru, the San Martín Reservoir. there are two pipelines carrying natural gas from the Camisea gas fields. The 540-kilometre Camisea pipeline traverses through the steep Andes mountains, and terminates within the Paracas National Reservation at the Pisco terminal. The pipeline has capacity of 450 million cubic feet per day .4] The second 714-kilometre natural gas pipeline runs from Malvinas along the coast to Lima and Callao for distribution to residents and industries in the capital city
BELAYIM EGYPT
SAIPEM - MENZEL
Relatore
Note di presentazione
menzel: da Algeria fino in Spagna Dal 4” al 36” PN100 circa 90 pezzi
SAIPEM - MENZEL
ALL OUR PROCESSES ARE UNDER STRICHT CONTROLS
ELECTRICAL TEST
DIELECTRICAL TEST
HYDRAULIC TEST
HYDRAULIC TEST
TENSILE TEST
TORSIONAL TEST
BENDING TEST
H O L I D AY T E S T
MAGNETIC TEST
MAGNETIC TEST
IMMERSION IN SALINE SOLUTION
… AND MANY OTHERS ACCORDING TO CLIENT REQUEST
R&D AND TECHNOLOGY AT YOUR SERVICE!
NUOVA GIUNGAS srl 41043 – Formigine Modena Italy Via A. Moro 26,28 Tel: +39 059 578611 Fax: +39 059 570633 E-mail [email protected] URL : www.nuovagiungas.com
