{"id":1008,"date":"2014-08-01T14:27:44","date_gmt":"2014-08-01T06:27:44","guid":{"rendered":"http:\/\/alfanso10.com\/?p=1008"},"modified":"2017-06-17T16:53:29","modified_gmt":"2017-06-17T08:53:29","slug":"8-4-jumper","status":"publish","type":"post","link":"http:\/\/alfanso10.com\/?p=1008","title":{"rendered":"8” Jumper Installation"},"content":{"rendered":"


\nCOMPANY: EMAS-AMC (SUBCONTRACTOR)<\/strong><\/span><\/p>\n

PROJECT TITLE: Liwan Deepwater Project<\/strong><\/span><\/p>\n

CLIENT: Husky Oil China<\/strong><\/span><\/p>\n

CONTRACTOR: SAIPEM<\/strong><\/span><\/p>\n

LOCATION:\u00a0China<\/strong><\/span><\/p>\n

YEAR: 2014<\/strong><\/span><\/p>\n

VESSEL: Pipe\u00a0Lay Barge (DLB) Lewek\u00a0Centurion<\/strong><\/span><\/p>\n

Lewek Centurion is a self-propelled DP2 S-lay pipeline installation vessel, The vessel measures 146.5m long by 30m wide (35m wide included the external thrusters), with mean operating draft of 7.8 m. The pipe lay ramp is located on the center of the barge and runs the entire length of the barge.<\/span><\/p>\n

The vessel is equipped with one pipe transfer crane and one shipboard crane. The pipe transfer crane has a maximum capacity of 36MT at 30m radius, and the shipboard crane has a maximum capacity of 20MT at 25m knuckle boom. The main crane is a 300 MT Kenz crane at 15-16m radius.<\/span><\/p>\n

LCE is also equipped with 300mT A-Frame and retractable Hang off Platform at port side with 300mT capacity at maximum retraction.<\/span><\/p>\n

All of the vessel accommodation is located above the main deck, and is fully air conditioned with a mess hall and recreational facilities. A helideck is located over the bow superstructure and is capable of accommodating an S61 helicopter.<\/span><\/p>\n

MULTI SUPPORT VESSEL (MSV): Volantis<\/strong><\/span><\/p>\n

During jumper installation LCE will be assisted by two (2) units of ROV onboard a MSV provided by CONTRACTOR.<\/span><\/p>\n

SCOPE OF WORK:<\/strong><\/span><\/p>\n

SUBCONTRACTOR\u2019 installed 2x of the following jumpers:<\/span><\/p>\n

8 inch vertical jumper:\u00a0EM-RJ-04<\/span><\/p>\n

8 inch vertical jumper:\u00a0LH-RJ-01<\/span><\/p>\n

Works performed by\u00a0SUBCONTRACTOR were CVC jumper lifting, deployment landing onto receiver hubs, spreader bar and jumper rigging recovery.<\/span><\/p>\n

ROV operations prior to the installation i.e. hub cleaning, etc. ;during jumper lowering i.e. MEG gel dummy hub release, etc. ;and after the installation i.e. soft landing with running tools, running tools recovery, etc. were\u00a0not included in the SUBCONTRACTOR scope of work. The word \u201cspool\u201d and \u201cjumper\u201d used here are interchangeably but they refer to the CVC jumpers above.<\/span><\/p>\n

MY INVOLVEMENT:<\/strong><\/span><\/p>\n

I was on board to install both jumpers<\/span><\/p>\n

INTRODUCTION<\/strong><\/span><\/p>\n

EMAS-AMC was subcontracted by Saipem to perform the installation of pipelines as part of\u00a0Liwan 3-1 Area Facilities Development Project. The works involved installation of two (2) pipelines\u00a0including its pipeline end terminals (PLET\u2019s), four (4) in total, and lifting support of two (2) spools\u00a0which will be installed offshore in South China Sea, approx. 300 km south from Hong Kong in a\u00a0water depth range from 1100 to approx. 1400 meter.\u00a0EMAS-AMC mobilized its pipelay vessel, the Lewek Centurion, end of March 2014 in\u00a0Singapore for an arrival date of 28th April 2014 at latest in Shekou, China, for inward clearances\u00a0and pipe load out. The installation activities were\u00a0estimated to last approximately two (2) months<\/span><\/p>\n

Jumper Data<\/u><\/span><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/span><\/td>\nUnit<\/span><\/td>\nEM-RJ-04<\/span><\/td>\nLH-RJ-01<\/span><\/td>\n<\/tr>\n
Size<\/span><\/td>\n[-]<\/span><\/td>\n219.1mm OD x 11.1mm WT(12.7mm WT at bend)<\/span><\/td>\n<\/tr>\n
Material<\/span><\/td>\n[-]<\/span><\/td>\nDNV 450 (SMLS) + CRA 625<\/span><\/td>\n<\/tr>\n
Associated Spreader Bar Size<\/span><\/td>\n[-]<\/span><\/td>\n36\u201d OD x 59m<\/span><\/td>\n48\u201d OD x 59m<\/span><\/td>\n<\/tr>\n
Location<\/span><\/td>\n[-]<\/span><\/td>\nEM \u2013 PLET P7
\n(1334m WD)<\/span><\/td>\n		WELL \u2013 PLET P8 (1123m WD)<\/span><\/td>\n<\/tr>\n
Max. weight in air (water)<\/span><\/td>\n[MT]<\/span><\/td>\n21.2 (14.4)<\/span><\/td>\n20.3 (15.6)<\/span><\/td>\n<\/tr>\n
Horizontal Length<\/span><\/td>\n[m]<\/span><\/td>\n43.7<\/span><\/td>\n1.1<\/span><\/td>\n<\/tr>\n
Total jumper length<\/span><\/td>\n[m]<\/span><\/td>\n55.2<\/span><\/td>\n61.3<\/span><\/td>\n<\/tr>\n
Rigging weight in air:<\/u><\/span><\/td>\n\u00a0<\/span><\/td>\n\u00a0<\/span><\/td>\n\u00a0<\/span><\/td>\n<\/tr>\n
\u00b7\u00a0\u00a0\u00a0 Jumper lower rigging including buoys, tugger lines<\/span><\/td>\n[MT]<\/span><\/td>\n5.4<\/span><\/td>\n5.4<\/span><\/td>\n<\/tr>\n
\u00b7\u00a0\u00a0\u00a0 Spreader bar weight (59m Length)<\/span><\/td>\n40.8<\/span><\/td>\n52.0<\/span><\/td>\n<\/tr>\n
\u00b7\u00a0\u00a0\u00a0 Spreader bar upper rigging and tugger lines<\/span><\/td>\n3.0<\/span><\/td>\n2.5<\/span><\/td>\n<\/tr>\n
\u00b7\u00a0\u00a0 Rigging weight in water:<\/u><\/span><\/td>\n\u00a0<\/span><\/td>\n\u00a0<\/span><\/td>\n<\/tr>\n
\u00b7\u00a0\u00a0 Jumper lower rigging including buoys, tugger lines<\/span><\/td>\n3.0<\/span><\/td>\n3.0<\/span><\/td>\n<\/tr>\n
\u00b7\u00a0\u00a0 Spreader bar weight (59m Length)<\/span><\/td>\n35.<\/span><\/td>\n45.2<\/span><\/td>\n<\/tr>\n
\u00b7\u00a0\u00a0 Spreader bar upper rigging and tugger lines<\/span><\/td>\n2.6<\/span><\/td>\n2.6<\/span><\/td>\n<\/tr>\n
Total deployment weight in air (water) [including contingency factor of 1.1]<\/span><\/td>\n[MT]<\/span><\/td>\n77.4 (61.1)<\/span><\/td>\n88.9 (72.7)<\/span><\/td>\n<\/tr>\n
Total spreader bar recovery weight in air (water) [including contingency factor of 1.1]<\/span><\/td>\n[MT]<\/span><\/td>\n54.1 (45.2)<\/span><\/td>\n68.6 (55.5)<\/span><\/td>\n<\/tr>\n
Attachment: CVC Running Tool weight in air (water)<\/span><\/td>\n[MT]<\/span><\/td>\n5.1 (4.4) each<\/span><\/td>\n5.1 (4.4) each<\/span><\/td>\n<\/tr>\n
Weight tolerance in air (water)\u00a0<\/span><\/td>\n[MT]<\/span><\/td>\n\u00b1 0.81 (0.49)<\/span><\/td>\n\u00b1 0.51 (0.31)<\/span><\/td>\n<\/tr>\n
Length tolerance<\/span><\/td>\n[m]<\/span><\/td>\n\u00b1 8.0<\/span><\/td>\n\u00b1 5.0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/u>Weather\u00a0<\/u>Limitation<\/u><\/span><\/p>\n

Recommended weather limitations used of Cranemaster for the jumper installation are shown in the table below. OCM assessed sufficient weather window prior to start of operation, at least up to the spreader bar disconnection.<\/span><\/p>\n\n\n\n\n\n\n\n\n\n\n
Tp [s]<\/span><\/td>\nLimiting Sea States – Hs [m]<\/span><\/td>\n<\/tr>\n
Deployment Criteria \u2013
\nSplash Zone<\/span><\/td>\n		Deployment Criteria\u2013 In Depth<\/span><\/td>\nLanding Speed Criteria
\n(w\/ Cranemaster)<\/span><\/td>\n<\/tr>\n
EM-RJ-04 & LH-RJ-01<\/span><\/td>\nEM-RJ-04\u00a0&\u00a0LH-RJ-01<\/span><\/td>\nEM-RJ-04<\/span><\/td>\nLH-RJ-01<\/span><\/td>\n<\/tr>\n
6<\/span><\/td>\n1.5<\/span><\/td>\n2.5<\/span><\/td>\n2.5<\/span><\/td>\n2.5<\/span><\/td>\n<\/tr>\n
7<\/span><\/td>\n1.7<\/span><\/td>\n2.5<\/span><\/td>\n2.5<\/span><\/td>\n2.5<\/span><\/td>\n<\/tr>\n
8<\/span><\/td>\n1.8<\/span><\/td>\n2.0<\/span><\/td>\n1.7<\/span><\/td>\n2.0<\/span><\/td>\n<\/tr>\n
9<\/span><\/td>\n1.9<\/span><\/td>\n1.6<\/span><\/td>\n1.2<\/span><\/td>\n1.3<\/span><\/td>\n<\/tr>\n
10<\/span><\/td>\n1.8<\/span><\/td>\n1.5<\/span><\/td>\n1.1<\/span><\/td>\n1.1<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Installation Tolerance and Target Location<\/u><\/span><\/p>\n

Both jumpers was installed onto each connection hub. Prior to installation, each jumper was\u00a0sized according to the results of jumper metrology. Target co-ordinate and installation tolerances for the jumper installation are presented in the table below:<\/span><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/span><\/td>\nUnit<\/span><\/td>\nEM-RJ-04<\/span><\/td>\nLH-RJ-01<\/span><\/td>\n<\/tr>\n
CVC RT Landing tolerance:<\/span><\/td>\n<\/tr>\n
Max landing speed<\/span><\/td>\n[m\/s]<\/span><\/td>\n0.8<\/span><\/td>\n<\/tr>\n
Max angular misalignment of RT for landing on hub<\/span><\/td>\n[deg]<\/span><\/td>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a01.5<\/span><\/td>\n<\/tr>\n
Max angular misalignment of connector in RT for jumper connection to hub receiver<\/span><\/td>\n[deg]<\/span><\/td>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a01.5<\/span><\/td>\n<\/tr>\n
Max total angular misalignment between connector and hub for final connection<\/span><\/td>\n[deg]<\/span><\/td>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a03 (1.5 + 1.5)<\/span><\/td>\n<\/tr>\n
Max allowable hub receiver inclination from vertical<\/span><\/td>\n[deg]<\/span><\/td>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 +\/- 5<\/span><\/td>\n<\/tr>\n
Max lateral misalignment in any direction<\/span><\/td>\n[inch]<\/span><\/td>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 +\/- 6.75 (~171mm)<\/span><\/td>\n<\/tr>\n
Landing position \u2013 Well LH 34-2-1\u00a0<\/span><\/td>\n[-]<\/span><\/td>\nN\/A<\/span><\/td>\n\u00a0<\/span><\/td>\nE 351800.41m N 2217148.18m<\/span><\/p>\n

Heading 233o<\/span><\/td>\n<\/tr>\n

Landing position \u2013 PLET P8\u00a0<\/span><\/td>\n[-]<\/span><\/td>\nN\/A<\/span><\/td>\n\u00a0<\/span><\/td>\nE 351846.97 m N 221732.30m<\/span><\/p>\n

Heading 89.99o<\/span><\/td>\n<\/tr>\n

Landing position \u2013 East Manifold Hub HT5<\/span><\/td>\n[-]<\/span><\/td>\nE 337712.6m N 2205876.8m<\/span><\/p>\n

Heading 223o<\/span><\/td>\n

N\/A<\/span><\/td>\n<\/tr>\n
Landing position \u2013 PLET P7<\/span><\/td>\n[-]<\/span><\/td>\nE 337755.43m N 2205895.97m<\/span><\/p>\n

Heading 29.09o<\/span><\/td>\n

N\/A<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Material\u00a0& Equipment List<\/u><\/span><\/p>\n

The table below lists items and quantities for 1 batch of 2 jumpers transported on 1 cargo barge. This list was\u00a0for jumper lifting, lowering and landing only.<\/span><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n
Ref.<\/strong><\/span><\/td>\nMaterial and Equipment<\/span><\/td>\nQty<\/span><\/td>\nRemarks<\/span><\/td>\n<\/tr>\n
1.<\/span><\/td>\nVertical Jumper<\/span><\/td>\n2 nos.<\/span><\/td>\nCONTRACTOR Provided<\/span><\/td>\n<\/tr>\n
2.<\/span><\/td>\nCVC Running Tools (2 nos. pre-installed on each jumper)<\/span><\/td>\n4 nos.<\/span><\/td>\nCONTRACTOR Provided<\/span><\/td>\n<\/tr>\n
3.<\/span><\/td>\nSpreader Bar with Upper and Lower Rigging, including clumpweight & temporary buoy for landing, where applicable\u00a0<\/span><\/td>\n2 sets<\/span><\/td>\nCONTRACTOR Provided<\/span><\/td>\n<\/tr>\n
4.<\/span><\/td>\nWorking platform for Spreader Bar Upper Rigging Connection<\/span><\/td>\n2 sets<\/span><\/td>\nCONTRACTOR Provided<\/span><\/td>\n<\/tr>\n
5.<\/span><\/td>\nWork class ROV<\/span><\/td>\n2 nos.<\/span><\/td>\nCONTRACTOR Provided, onboard MSV<\/span><\/td>\n<\/tr>\n
6.<\/span><\/td>\nCranemaster (4.5m stroke length) equipped with rigging\u00a0\u2013 150MT SWL<\/span>
\n \u00a0<\/span><\/td>\n		1 set<\/span><\/td>\nSUBCONTRACTOR<\/span><\/td>\n<\/tr>\n
7.<\/span><\/td>\nEMAS Transfer Rigging<\/span><\/td>\n1 set<\/span><\/td>\nSUBCONTRACTOR<\/span><\/td>\n<\/tr>\n
8.<\/span><\/td>\nSAIPEM Transfer Rigging<\/span><\/td>\n1 set<\/span><\/td>\nCONTRACTOR Provided<\/span><\/td>\n<\/tr>\n
9.<\/span><\/td>\nLoad Control Lines Rigging<\/span><\/td>\n1 set<\/span><\/td>\nSUBCONTRACTOR<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Cranemaster Data<\/u><\/span><\/p>\n

Cranemaster was selected to be used as passive heave compensation system for the jumper installation. Prior to deployment of each jumper, the Cranemaster\u2019s gas pressure was set according to the specific characteristic of each jumper.<\/span><\/p>\n

It is noted that the Cranemaster unit to a certain extent functions as a swivel as long as the piston rod was\u00a0extracted from zero position which in this case, eased ROV orientation during jumper lowering.<\/span><\/p>\n\n\n\n\n\n\n\n\n\n
Description<\/span><\/td>\nUnit<\/span><\/td>\nValue<\/span><\/td>\n<\/tr>\n
Cranemaster Unit<\/span><\/td>\n[-]<\/span><\/td>\nCM2-150T-4500-A (max stroke length = 4.5m)<\/span><\/td>\n<\/tr>\n
Safe Working Load<\/span><\/td>\n[MT]<\/span><\/td>\n150<\/span><\/td>\n<\/tr>\n
Max water depth<\/span><\/td>\n[m]<\/span><\/td>\n3000<\/span><\/td>\n<\/tr>\n
Size<\/span><\/td>\n[mm]<\/span><\/td>\nLength 6340 to 10840mm (zero to full stroke) Diameter 660mm<\/span><\/td>\n<\/tr>\n
Weight with shackles in air (water)<\/span><\/td>\n[MT]<\/span><\/td>\n6.321 (4.603)<\/span><\/td>\n<\/tr>\n
Mounting direction<\/span><\/td>\n[-]<\/span><\/td>\nPiston road pointing down<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

PLET INSTALLATION<\/strong><\/span><\/p>\n

General Installation Scenario<\/strong><\/span><\/p>\n

The installation of two (2) 8 inch vertical jumpers with Lewek Centurion commenced from lifting each jumper from CONTRACTOR\u2019s material barge, lowering through splash zone, releasing MEG gel dummy hubs and landing on the connection hubs. The general sequence is as summarized below:<\/span><\/p>\n

<\/u>Pre-Installation Activities by CONTRACTOR\/Initial Status on Site<\/u><\/span><\/p>\n