CA1337580C - System for the progressive remote release of a series of clamps which have been clamped in succession along an underwater structure, and the method for its operation - Google Patents
System for the progressive remote release of a series of clamps which have been clamped in succession along an underwater structure, and the method for its operationInfo
- Publication number
- CA1337580C CA1337580C CA000605657A CA605657A CA1337580C CA 1337580 C CA1337580 C CA 1337580C CA 000605657 A CA000605657 A CA 000605657A CA 605657 A CA605657 A CA 605657A CA 1337580 C CA1337580 C CA 1337580C
- Authority
- CA
- Canada
- Prior art keywords
- pins
- clamps
- series
- rope
- clamp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000000750 progressive effect Effects 0.000 title claims abstract description 7
- 238000003780 insertion Methods 0.000 claims abstract 5
- 230000037431 insertion Effects 0.000 claims abstract 5
- 239000000470 constituent Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- ODPOAESBSUKMHD-UHFFFAOYSA-L 6,7-dihydrodipyrido[1,2-b:1',2'-e]pyrazine-5,8-diium;dibromide Chemical compound [Br-].[Br-].C1=CC=[N+]2CC[N+]3=CC=CC=C3C2=C1 ODPOAESBSUKMHD-UHFFFAOYSA-L 0.000 description 1
- 101150039167 Bex3 gene Proteins 0.000 description 1
- 239000005630 Diquat Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/16—Laying or reclaiming pipes on or under water on the bottom
- F16L1/163—Laying or reclaiming pipes on or under water on the bottom by varying the apparent weight of the pipe during the laying operation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/20—Accessories therefor, e.g. floats or weights
- F16L1/24—Floats; Weights
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Revetment (AREA)
- Ropes Or Cables (AREA)
Abstract
A system for the progressive remote release of a series of clamps clamped in succession along an underwater structure, comprising a withdrawal rope which has a special enlargement at one end and is made to pass through the central through bores in the connection pins which lock the Insertion hinges of said clamps of the series, said pins being in the form of two coupled half-pins. A method for operating the release system is also provided.
Description
SYSTEX FOR THE PROGRESSIVE RE~OTE RELBASE OF A SERIES OF CLA~PS
WHICH HAVE BEE~ CLAMPED IN SUCCESSIO~ ALONG A~ U~DERWATER
STRUCTURE, AND THE ~ETHOD POR ITS OPERATIOX
Thls lnvention relates to a proa-esslve remote release system whlch allaws the connectlons between an underwater structure and a serles of clamps clamped along lt to be released under remote control ln a rapld, effectlve, rellable and ln partlcular econom~cal manner wlthout uslng dlvers.
The inventlon also relates to the method for operatlng the system.
When conveylng pipellne portlons or other underwater structures through distances of up to several kllometers to the slte ln whlch they are to be lnstalled on the water bed, lt ls known to generally use support floats whlch are arranged ln succession and lndlvldually connected to the structure to be supported by means of clamps, ropes or other means, whlch have then to be released when the operatlon has been completed.
In the current state of the art thls release stage ls carrled out by dlvers or remoteiy gulded vehlcles which dlrectly release each element one after the other.
Thls method however ls not only very costly in terms of tlme and money, but ls also very rlsky ln terms of the safety of the operators who personally have to release the connectlons.
Devlces are occaslonally used whlch dlspense wlth the dlrect action of the operators by releaslng the clamps remotely uslng acoustlc slgnals, but a release system of thls type 15 of such hlgh cost that lts use cannot always be Justlfled.
The obJect of the present lnventlon ls to obvlate sald drawbacks by provldlng an effectlve release system whlch enables a serles of clamps clamped ln succession along an underwater structure to be released ln sequence ln an economlcal and rapld manner by a remote command, generally transmltted from surface level, wlthout using dlvers.
This is attalned substantlally ln that each clamp of the series is ln the form of two Jaws which are hlnged together ln opposlng posltlons along one of thelr ends by a mechanlsm for adJusting the clamplng tenslon of the clamp, and are connected together st thelr other ends by an lnsertlon hlnge lockable by a hollow through connectlon pln whlch ls wlthdrawable on commsnd. Ssld hollow cyllndrlcal pln ls ln the form of two half-plns coupled together and ls held ln lts seat not only by the clamplng force lmposed by the clamp but also by a shoulder proJectlon present at that end of sald half-plns located at the slde from whlch the pln ls wlthdrawn, and posslbly by an elastlc retalnlng rlng mounted at the opposlte end of sald half-plns.
Flnally, a rope ls passed through the practlcally allgned central bores through the plns of the entire serles of clamps, thls rope havlng at one end an enlarged portlon of slze greater than the dlameter of the bore through all the plns but sllghtly smaller t 337580 than the dlameter of the pins themselves, so that lt can be withdrawn from the hinge together wlth the plns, whlle lts other ,_, ~ -end ls held at surface level by the personnel carrying out the release operatlon.
In thls manner, on pulllng the rope by the means located on the surface, as sald enlarged portlon encounters the lndivldual plns lt forces them out af thelr respectlve hlnge, wlthdrawing them also from sald elastlc rlngs lf provided, thus openlng and releasing the clamps af the serles ln sequence. Agaln, belng constructed ln two parts, as soon as they are wlthdrawn from the respective lnsertlon hlnges the plns open to thus release the enlarged end of the ropej whlch ls therefore ready to act on the subsequent pins.
Thus, the system for the progresslve remote release of a serles of clamps clamped ln successlon along an underwater structure, ln whlch each clamp of the serles ls ln the form of two ~aws whlch are hlnged together ln opposlng posltlons at one of thelr ends by a mechanlsm for ad~ustlng the tenslon by whlch the clamp clamps sald underwater structure, and are connected together at thelr other ends by an lnsertion hlnge lockable by a through connectlon pin, ls characterised according to the present lnventlon ln that each through connection pin ls ln the form of two half-plns coupled together and deflnlng a central through bore, there belng passed through sald central through bores of the plns of the 25 entlre serles of clamps ln successlon a rope havlng at one end an enlarged portlon of slze greater than the dlameter of sald central bores of the plns but sllghtly smaller than the dlameter of the -- plns themselves, lts other end being held at surface level by the personnel carrylng out the release operation.
Accordlng to a preferred embodlment of the present lnventlon, each hollow through connectlon pln comprlses, at that end of lts sald constituent half-pins located at the slde from whlch the pln ls wlthdrawn, a shoulder pro~ectlon of dlmenslon greater than that of the through bores of the lnsertLon hlnges lnto whlch sald through plns are lnserted, and an elastlc retalnlng rlng can be Dunted at the opposlte end to that from whlch sald rope ls wlthdrawn.
Flnally, the method for the pro~le661ve remote release of a serles of clamps clamped ln successlon along an underwater structure by means of the release system accordlng to the lnventlon ls characte--lsed accordlng to the present lnventlon by comprlslng the operation of drawing-in said wlthdrawal rope by pulling lt from lts free end at surface level wlth a force such that lts enlarged end portlon causes the hollow pln of the flrst clamp to wlthdraw from the elastlc rlng lf provlded, and to then wlthdraw from the relatlve lnsertlon hlnge wlth consequent release of the flrst clamp, sald operatlon belng repeated a number of t:lmes untll the last clamp of the serles has been released.
The lnvention ls described ln detall hereinafter wlth reference to the accompanylng drawlngs which lllustrate a preferred embodlment thereof glven by way of non-llmltlng example only ln that technlcal or constructlonal modlficatlons can be nade thereto but wlthout leaving the scope of the present lnventlon. For example, lnstead of belng used for the sequence-release of floats used for supportlng a portlon of plpellne durlng lts transportatlon to the slte ln whlch lt ls to be lald on the water bed, the release systQ~ can be used for the sequence-release of ballasts or loads from structures used underwater. In addition instead of belng provlded wlth half-rlng ~aws partlcularly sultable for plpellnes and cyllndrtcal structures ln general, the clamps can be provided wlth Jaws of any shape, and the hollow through connectlon plns can also be of any shape besldes cyllndrlcal, and further~ore a cable or the llke can be used lnstead of a rope.
In sald drawlngs:
Flgure 1 shows the appllcatlon of the release system accordlng to the lnventlon to the transportatlon of a portlon of plpellne by ~eans of floats;
Flgure 2 shows the operatlon lnvolvlng the release of the floats of Plgure 1 in successlon ln order to lay the plpellne portlon onto the water bed;
Flgure 3 ls a partlal enlarged vlew of the flrst clamp reglon of Flgure l;
Figure 4 ls a longltudinal enlarged vlew of the hlnge region of Figure 3;
Figure 5 is a front view on the line AA of Figure 3;
Figure 6 is a slde vlew on the llne BB of Figure 5;
Figures 7 and 8 represent on enlarged scale steps in the release procedure for the first clamp according to the invention.
In the figures the reference nu~eral 1 lndlcates a watercraft whlch by ~eans of the cable 2 tows a plpellne portlon 3 to be lald on the bed 4 of an expanse of water. Sald plpellne portlon 3 is - supported durlng lts transportatlon by a serles of support floats 5., 52, ....58 which are posltioned ln successlon along the ; pipeline portion and are locked to this by an analogous serles of clamps 6l~ 62,...... 6~ and connectlon cables 7.
Each clamp 61,....... 68 conslsts of two Jaws 8 and ~ hlnged together at one end ln opposing posltlons by a mechanlsm 10 whlch by means of the bolt 11 and nut 12 enables the tenslon exerted by the clamp ln clamplng the plpeline portion 3 to be adJusted.
The other two ends of the Jaws 8 and 9 are connected together by an lnsertion hlnge, 13 and 14 respectlvely, whlch is locked by a through connectlon pln conslstlng of two half-plns 15 and 16 coupled to each other to form a central through bore 17 ~see speclflcally Flgure 8~. Said half-pins 15 and 16 comprise at that end faclng the watercraft 1 a shoulder pro~ection 18 whlch prevents the pln wlthdrawing towards the rlght slde (see Flgure 4), and are held together at thelr other end by an elastlc retalnlng rlng 19.
Plnally, a withdrawal rope 20 is passed in succession through said central through bores 17 ln the plns of the lnsertlon hlnges of all the clamps 6.,......... 6~, one of lts ends belng held at surface level on the watercraft 1 and lts other end comprlslng an enlargement 21 the slze of whlch ls greater than the dlameter of sald bores 17 but smaller than that of the plns themselves, 60 that lt can be wlthdrawn together wlth the plns of the lnsertlon hlnges.
In thls manner, by drawlng-ln sald wlthdrawal rope 20 from the watercraft 1 by pulllng lt wlth a certaln force 22 (see speclfically Figures 7 and 8), said enlargement 21 is made to press agalnst the edge of the pin so that, as pulllng ls continued, it withdraws sald pln completely from the relative lnsertion hinge, so releaslng the relatlve clamp.
In this manner all the clamps 6" .... 68 can be released by operating from the watercraft 1, because when the plns have been wlthdrawn from the hinge they fall downwards and release the rope.
WHICH HAVE BEE~ CLAMPED IN SUCCESSIO~ ALONG A~ U~DERWATER
STRUCTURE, AND THE ~ETHOD POR ITS OPERATIOX
Thls lnvention relates to a proa-esslve remote release system whlch allaws the connectlons between an underwater structure and a serles of clamps clamped along lt to be released under remote control ln a rapld, effectlve, rellable and ln partlcular econom~cal manner wlthout uslng dlvers.
The inventlon also relates to the method for operatlng the system.
When conveylng pipellne portlons or other underwater structures through distances of up to several kllometers to the slte ln whlch they are to be lnstalled on the water bed, lt ls known to generally use support floats whlch are arranged ln succession and lndlvldually connected to the structure to be supported by means of clamps, ropes or other means, whlch have then to be released when the operatlon has been completed.
In the current state of the art thls release stage ls carrled out by dlvers or remoteiy gulded vehlcles which dlrectly release each element one after the other.
Thls method however ls not only very costly in terms of tlme and money, but ls also very rlsky ln terms of the safety of the operators who personally have to release the connectlons.
Devlces are occaslonally used whlch dlspense wlth the dlrect action of the operators by releaslng the clamps remotely uslng acoustlc slgnals, but a release system of thls type 15 of such hlgh cost that lts use cannot always be Justlfled.
The obJect of the present lnventlon ls to obvlate sald drawbacks by provldlng an effectlve release system whlch enables a serles of clamps clamped ln succession along an underwater structure to be released ln sequence ln an economlcal and rapld manner by a remote command, generally transmltted from surface level, wlthout using dlvers.
This is attalned substantlally ln that each clamp of the series is ln the form of two Jaws which are hlnged together ln opposlng posltlons along one of thelr ends by a mechanlsm for adJusting the clamplng tenslon of the clamp, and are connected together st thelr other ends by an lnsertlon hlnge lockable by a hollow through connectlon pln whlch ls wlthdrawable on commsnd. Ssld hollow cyllndrlcal pln ls ln the form of two half-plns coupled together and ls held ln lts seat not only by the clamplng force lmposed by the clamp but also by a shoulder proJectlon present at that end of sald half-plns located at the slde from whlch the pln ls wlthdrawn, and posslbly by an elastlc retalnlng rlng mounted at the opposlte end of sald half-plns.
Flnally, a rope ls passed through the practlcally allgned central bores through the plns of the entire serles of clamps, thls rope havlng at one end an enlarged portlon of slze greater than the dlameter of the bore through all the plns but sllghtly smaller t 337580 than the dlameter of the pins themselves, so that lt can be withdrawn from the hinge together wlth the plns, whlle lts other ,_, ~ -end ls held at surface level by the personnel carrying out the release operatlon.
In thls manner, on pulllng the rope by the means located on the surface, as sald enlarged portlon encounters the lndivldual plns lt forces them out af thelr respectlve hlnge, wlthdrawing them also from sald elastlc rlngs lf provided, thus openlng and releasing the clamps af the serles ln sequence. Agaln, belng constructed ln two parts, as soon as they are wlthdrawn from the respective lnsertlon hlnges the plns open to thus release the enlarged end of the ropej whlch ls therefore ready to act on the subsequent pins.
Thus, the system for the progresslve remote release of a serles of clamps clamped ln successlon along an underwater structure, ln whlch each clamp of the serles ls ln the form of two ~aws whlch are hlnged together ln opposlng posltlons at one of thelr ends by a mechanlsm for ad~ustlng the tenslon by whlch the clamp clamps sald underwater structure, and are connected together at thelr other ends by an lnsertion hlnge lockable by a through connectlon pin, ls characterised according to the present lnventlon ln that each through connection pin ls ln the form of two half-plns coupled together and deflnlng a central through bore, there belng passed through sald central through bores of the plns of the 25 entlre serles of clamps ln successlon a rope havlng at one end an enlarged portlon of slze greater than the dlameter of sald central bores of the plns but sllghtly smaller than the dlameter of the -- plns themselves, lts other end being held at surface level by the personnel carrylng out the release operation.
Accordlng to a preferred embodlment of the present lnventlon, each hollow through connectlon pln comprlses, at that end of lts sald constituent half-pins located at the slde from whlch the pln ls wlthdrawn, a shoulder pro~ectlon of dlmenslon greater than that of the through bores of the lnsertLon hlnges lnto whlch sald through plns are lnserted, and an elastlc retalnlng rlng can be Dunted at the opposlte end to that from whlch sald rope ls wlthdrawn.
Flnally, the method for the pro~le661ve remote release of a serles of clamps clamped ln successlon along an underwater structure by means of the release system accordlng to the lnventlon ls characte--lsed accordlng to the present lnventlon by comprlslng the operation of drawing-in said wlthdrawal rope by pulling lt from lts free end at surface level wlth a force such that lts enlarged end portlon causes the hollow pln of the flrst clamp to wlthdraw from the elastlc rlng lf provlded, and to then wlthdraw from the relatlve lnsertlon hlnge wlth consequent release of the flrst clamp, sald operatlon belng repeated a number of t:lmes untll the last clamp of the serles has been released.
The lnvention ls described ln detall hereinafter wlth reference to the accompanylng drawlngs which lllustrate a preferred embodlment thereof glven by way of non-llmltlng example only ln that technlcal or constructlonal modlficatlons can be nade thereto but wlthout leaving the scope of the present lnventlon. For example, lnstead of belng used for the sequence-release of floats used for supportlng a portlon of plpellne durlng lts transportatlon to the slte ln whlch lt ls to be lald on the water bed, the release systQ~ can be used for the sequence-release of ballasts or loads from structures used underwater. In addition instead of belng provlded wlth half-rlng ~aws partlcularly sultable for plpellnes and cyllndrtcal structures ln general, the clamps can be provided wlth Jaws of any shape, and the hollow through connectlon plns can also be of any shape besldes cyllndrlcal, and further~ore a cable or the llke can be used lnstead of a rope.
In sald drawlngs:
Flgure 1 shows the appllcatlon of the release system accordlng to the lnventlon to the transportatlon of a portlon of plpellne by ~eans of floats;
Flgure 2 shows the operatlon lnvolvlng the release of the floats of Plgure 1 in successlon ln order to lay the plpellne portlon onto the water bed;
Flgure 3 ls a partlal enlarged vlew of the flrst clamp reglon of Flgure l;
Figure 4 ls a longltudinal enlarged vlew of the hlnge region of Figure 3;
Figure 5 is a front view on the line AA of Figure 3;
Figure 6 is a slde vlew on the llne BB of Figure 5;
Figures 7 and 8 represent on enlarged scale steps in the release procedure for the first clamp according to the invention.
In the figures the reference nu~eral 1 lndlcates a watercraft whlch by ~eans of the cable 2 tows a plpellne portlon 3 to be lald on the bed 4 of an expanse of water. Sald plpellne portlon 3 is - supported durlng lts transportatlon by a serles of support floats 5., 52, ....58 which are posltioned ln successlon along the ; pipeline portion and are locked to this by an analogous serles of clamps 6l~ 62,...... 6~ and connectlon cables 7.
Each clamp 61,....... 68 conslsts of two Jaws 8 and ~ hlnged together at one end ln opposing posltlons by a mechanlsm 10 whlch by means of the bolt 11 and nut 12 enables the tenslon exerted by the clamp ln clamplng the plpeline portion 3 to be adJusted.
The other two ends of the Jaws 8 and 9 are connected together by an lnsertion hlnge, 13 and 14 respectlvely, whlch is locked by a through connectlon pln conslstlng of two half-plns 15 and 16 coupled to each other to form a central through bore 17 ~see speclflcally Flgure 8~. Said half-pins 15 and 16 comprise at that end faclng the watercraft 1 a shoulder pro~ection 18 whlch prevents the pln wlthdrawing towards the rlght slde (see Flgure 4), and are held together at thelr other end by an elastlc retalnlng rlng 19.
Plnally, a withdrawal rope 20 is passed in succession through said central through bores 17 ln the plns of the lnsertlon hlnges of all the clamps 6.,......... 6~, one of lts ends belng held at surface level on the watercraft 1 and lts other end comprlslng an enlargement 21 the slze of whlch ls greater than the dlameter of sald bores 17 but smaller than that of the plns themselves, 60 that lt can be wlthdrawn together wlth the plns of the lnsertlon hlnges.
In thls manner, by drawlng-ln sald wlthdrawal rope 20 from the watercraft 1 by pulllng lt wlth a certaln force 22 (see speclfically Figures 7 and 8), said enlargement 21 is made to press agalnst the edge of the pin so that, as pulllng ls continued, it withdraws sald pln completely from the relative lnsertion hinge, so releaslng the relatlve clamp.
In this manner all the clamps 6" .... 68 can be released by operating from the watercraft 1, because when the plns have been wlthdrawn from the hinge they fall downwards and release the rope.
Claims (5)
1. A system for the progressive remote release of a series of clamps clamped in succession along an underwater structure, in which each clamp of the series is in the form of two jaws which are hinged together in opposing positions at one of their ends by a mechanism for adjusting the tension by which the clamp clamps said underwater structure, and are connected together at their other ends by an insertion hinge lockable by a through connection pin, characterised in that each through connexion pin is in the form of two half-pins coupled together and defining a central through bore, there being passed through said central through bores of the pins of the entire series of clamps in succession a rope having at one end an enlarged portion of size greater than the diameter of said central bores of the pins but slightly smaller than the diameter of the pins themselves, its other end being held at surface level by a personnel carrying out the release operation; whereby on pulling the rope said enlarged portion encounters the pins and forces said pins out of respective hinge, thus opening and releasing the clamps of the series in sequence.
2. A system for the progressive remote release of a series of clamps clamped in succession along an underwater structure as claimed in claim 1, characterised in that each hollow through connexion pin comprises, at that end of its said constituent half-pins located at the side from which the rope is withdrawn, a shoulder projection of dimension greater than that of the through bores of the insertion hinges into which said through pins are inserted.
3. A system for the progressive remote release of a series of clamps clamped in succession along an underwater structure as claimed in claim 1, characterised in that an elastic retaining ring is mounted on the end of each hollow through connexion pin at the opposite end to that from which said rope is withdrawn.
4. A method for the progressive remote release of a series of clamps clamped in succession along an underwater structure, each clamp of the series forming two jaws which are hinged together in opposing positions at one of their ends by a mechanism for adjusting the tension by which the clamp clamps said underwater structure, and are connected together at their other ends by an insertion hinge lockable by a through connexion pin, each through connexion pin forming two half-pins coupled together and defining a central through bore, a rope being passed through said central through bores of the pins of the entire series of clamps in succession, said rope having at one end an enlarged portion of size greater than a diameter of said central bores of the pins but slightly smaller than a diameter of the pins themselves, said rope having another end held at surface level by a personnel carrying out the release operation, the method is characterised by comprising the operation of drawing-in said rope by pulling it from its end at surface level with a force such that its enlarged end portion causes the pin of a first clamp to withdraw from the relative insertion hinge with consequent release of the first clamp, said operation being repeated a number of times until a last clamp of the series has been released.
5. A method as claimed in claim 4, wherein each clamp further comprises an elastic retaining ring mounted on the end of each hollow through connexion pin at the opposite end to that from which said rope is withdrawn, and wherein the force further causes the pin of each clamp to withdraw from a corresponding elastic retaining ring.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT21554A/88 | 1988-07-29 | ||
| IT8821554A IT1226554B (en) | 1988-07-29 | 1988-07-29 | PROGRESSIVE DISTANCE RELEASE SYSTEM OF A SERIES OF CLAMPED LOCKS IN SUCCESSION ALONG AN UNDERWATER STRUCTURE AND PROCEDURE FOR ITS INSTALLATION. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1337580C true CA1337580C (en) | 1995-11-21 |
Family
ID=11183526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000605657A Expired - Fee Related CA1337580C (en) | 1988-07-29 | 1989-07-14 | System for the progressive remote release of a series of clamps which have been clamped in succession along an underwater structure, and the method for its operation |
Country Status (18)
| Country | Link |
|---|---|
| AT (1) | AT397548B (en) |
| BE (1) | BE1003076A4 (en) |
| BR (1) | BR8903700A (en) |
| CA (1) | CA1337580C (en) |
| DE (1) | DE3923957A1 (en) |
| DK (1) | DK170911B1 (en) |
| ES (1) | ES2014915A6 (en) |
| FI (1) | FI893552L (en) |
| FR (1) | FR2634854A1 (en) |
| GB (1) | GB2221247B (en) |
| GR (1) | GR1000590B (en) |
| IE (1) | IE63699B1 (en) |
| IT (1) | IT1226554B (en) |
| LU (1) | LU87558A1 (en) |
| NL (1) | NL8901920A (en) |
| NO (1) | NO893061L (en) |
| PT (1) | PT91298B (en) |
| SE (1) | SE8902577L (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003002848A1 (en) * | 2001-06-29 | 2003-01-09 | Smit Land & Marine Engineering Limited | Method of laying an underwater flowline |
| WO2006117249A2 (en) * | 2005-05-05 | 2006-11-09 | Acergy France Sa | Towing and subsea installation of long articles |
| NL2017332B1 (en) * | 2016-08-18 | 2018-02-23 | Boskalis Bv Baggermaatschappij | Method, system and parts of said system for releasing a submergible load from a buoyant member |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3128512A (en) * | 1961-05-10 | 1964-04-14 | Merritt Chapman & Scott Corp | Release mechanism |
| FR2260051A1 (en) * | 1974-02-04 | 1975-08-29 | Sedec | Method of placing undersea piping - uses collapsible fluid filled tube gives buoyancy to prevent kinking of piping |
| FR2281534A1 (en) * | 1974-08-05 | 1976-03-05 | Petroles Cie Francaise | METHOD AND DEVICE FOR RELEASING FLOATS FOR LIGHTENING SUBMARINE PIPES |
| FR2344678A1 (en) * | 1976-03-18 | 1977-10-14 | Doris Dev Richesse Sous Marine | Float detachment system from underwater structure - has main circuit connecting control position to one release device |
| FR2353002A1 (en) * | 1976-05-25 | 1977-12-23 | Doris Dev Richesse Sous Marine | SUBMERSIBLE FLOAT RELEASE DEVICE |
| US4399601A (en) * | 1980-03-31 | 1983-08-23 | Shell Oil Company | Method of preparing and using a pressure actuated release mechanism |
| US4563108A (en) * | 1983-05-18 | 1986-01-07 | Shell Oil Company | Pressure actuated release mechanism |
-
1988
- 1988-07-29 IT IT8821554A patent/IT1226554B/en active
-
1989
- 1989-07-12 IE IE224989A patent/IE63699B1/en not_active IP Right Cessation
- 1989-07-13 GR GR890100449A patent/GR1000590B/en unknown
- 1989-07-14 GB GB8916205A patent/GB2221247B/en not_active Expired - Fee Related
- 1989-07-14 CA CA000605657A patent/CA1337580C/en not_active Expired - Fee Related
- 1989-07-18 LU LU87558A patent/LU87558A1/en unknown
- 1989-07-19 DE DE3923957A patent/DE3923957A1/en active Granted
- 1989-07-19 FR FR8909716A patent/FR2634854A1/en active Pending
- 1989-07-20 SE SE8902577A patent/SE8902577L/en not_active Application Discontinuation
- 1989-07-20 BR BR898903700A patent/BR8903700A/en not_active IP Right Cessation
- 1989-07-21 ES ES8903014A patent/ES2014915A6/en not_active Expired - Fee Related
- 1989-07-24 AT AT0178289A patent/AT397548B/en not_active IP Right Cessation
- 1989-07-25 FI FI893552A patent/FI893552L/en not_active Application Discontinuation
- 1989-07-25 NL NL8901920A patent/NL8901920A/en not_active Application Discontinuation
- 1989-07-26 BE BE8900806A patent/BE1003076A4/en not_active IP Right Cessation
- 1989-07-27 PT PT91298A patent/PT91298B/en not_active IP Right Cessation
- 1989-07-27 NO NO89893061A patent/NO893061L/en unknown
- 1989-07-28 DK DK373789A patent/DK170911B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DK170911B1 (en) | 1996-03-11 |
| DK373789A (en) | 1990-01-30 |
| IE892249L (en) | 1990-01-29 |
| GB2221247B (en) | 1992-07-29 |
| BR8903700A (en) | 1990-10-02 |
| ATA178289A (en) | 1993-09-15 |
| LU87558A1 (en) | 1990-02-07 |
| NL8901920A (en) | 1990-02-16 |
| PT91298A (en) | 1990-02-08 |
| FI893552L (en) | 1990-01-30 |
| GB2221247A (en) | 1990-01-31 |
| NO893061L (en) | 1990-01-30 |
| AT397548B (en) | 1994-04-25 |
| SE8902577D0 (en) | 1989-07-20 |
| DE3923957A1 (en) | 1990-02-08 |
| GR1000590B (en) | 1992-08-26 |
| FR2634854A1 (en) | 1990-02-02 |
| DK373789D0 (en) | 1989-07-28 |
| IT1226554B (en) | 1991-01-24 |
| PT91298B (en) | 1995-07-06 |
| GB8916205D0 (en) | 1989-08-31 |
| ES2014915A6 (en) | 1990-07-16 |
| SE8902577L (en) | 1990-01-30 |
| NO893061D0 (en) | 1989-07-27 |
| FI893552A0 (en) | 1989-07-25 |
| DE3923957C2 (en) | 1990-09-27 |
| IT8821554A0 (en) | 1988-07-29 |
| IE63699B1 (en) | 1995-05-31 |
| BE1003076A4 (en) | 1991-11-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |