SAWE Paper Offshore Wgtrep 120507

SAWE Paper No. 3483

Category No. 17

REPORT FORMAT FOR WEIGHT CONTROL OF OFFSHORE STRUCTURES

by

Stein Bjørhovde

BAS Engineering AS / ShipWeight

For Presentation at the

71st Annual Conference

of

Society of Allied Weight Engineers, Inc.

Bad Gögging and Manching – Bavaria, Germany –

05-10, May, 2012

Permission to publish this paper, in full or in part, with credit to the author and the Society may

be obtained, by request, to:

Society of Allied Weight Engineers, Inc.

P.O. Box 60024, Terminal Annex

Los Angeles, CA 90060

The Society is not responsible for statements or opinions in papers or discussions at the meeting.

This paper meets all regulations for public information disclosure under ITAR and EAR

Report Format for Weight Control of Offshore Structures PAPER No : 3483

Table of Contents

Table of Contents.......................................................................................................................................................... ii

Table of Figures ........................................................................................................................................................... iii

Abstract.......................................................................................................................................................................... 1

Background .................................................................................................................................................................... 2

The goal of this Paper .................................................................................................................................................... 2

ISO 19901-5: Weight control during engineering and construction .............................................................................. 2

Statoil requirement TR2352: Weight control requirements for topsides and substructures .......................................... 2

Identification (key) and description fields ................................................................................................................. 3

Unique identification of items ............................................................................................................................... 3

Topics for further discussion and consideration .................................................................................................... 3

Quantity, weight and co-ordinate fields ..................................................................................................................... 3

Net weight vs. gross weight ................................................................................................................................... 4

Content and co-ordinates ....................................................................................................................................... 4

Local coordinates ................................................................................................................................................... 4


Information fields ...................................................................................................................................................... 4

Additional fields needed to comply to ISO standard ............................................................................................. 5


Weight report content .................................................................................................................................................... 6

Layout of printouts and tables ................................................................................................................................... 7

1. Introduction ....................................................................................................................................................... 7

1.1 Major assemblies .......................................................................................................................................... 7

1.2 Cut-off date ...................................................................................................................................................... 7

1.3 Weight information provided by others ........................................................................................................... 7

1.4 List of reported loading conditions .................................................................................................................. 8

2.1 Main summary ................................................................................................................................................. 9

2.2 Weight and load budget (WLB) ..................................................................................................................... 10

2.3 Global CoG plot ................................................................................................................................................. 10

2.4 Main variations from the previous report .......................................................................................................... 11

2.5 Weight forecast .................................................................................................................................................. 12

2.5.1 General............................................................................................................................................................ 12

2.5.2 Main trend graphs ........................................................................................................................................... 13

2.6 Main weight printout summaries by area and discipline ................................................................................... 14

2.7 As built / weighing data ..................................................................................................................................... 15

3.1 Variation from last report by area and discipline ............................................................................................... 16

3.2 Trend graphs by area ......................................................................................................................................... 17

3.3 CoG plots ........................................................................................................................................................... 18


3.4 Area weight printouts ........................................................................................................................................ 19

5.1 Assumptions ...................................................................................................................................................... 20

5.1.1 General assumptions ....................................................................................................................................... 20

5.1.2 Discipline assumptions ................................................................................................................................... 20

5.2.1 Global origin ................................................................................................................................................... 21

5.2.2 Area designations............................................................................................................................................ 22

5.3 Weight allowance and contingency ................................................................................................................... 23

5.4 Report codes ...................................................................................................................................................... 23

5.4.1 Weight installation codes ................................................................................................................................ 23

5.4.2 Weight phase codes ........................................................................................................................................ 24

5.4.3 Weight status codes ........................................................................................................................................ 24

5.4.4 Area codes ...................................................................................................................................................... 24

Automatic generated weight reports ............................................................................................................................ 25

Background .............................................................................................................................................................. 25

Requirements ........................................................................................................................................................... 25

Conclusion ................................................................................................................................................................... 25

Terms and definitions .................................................................................................................................................. 26

Appendix 1: Examples of Main Summary tables from various Weight Reports. ........................................................ 27

Example 1: Jacket topside ....................................................................................................................................... 27

Example 2: FPSO topside ........................................................................................................................................ 28

Example 3: Jacket topside ....................................................................................................................................... 28

Example 4: Semi-submersible total platform .......................................................................................................... 29

Example 5: FPSO topside and vessel ...................................................................................................................... 30

Appendix 2: Example of chapter mapping between ISO standard chapters and weight reports from past projects .... 31

Table of Figures

Figure 1: Major Assemblies printout ............................................................................................................................. 7

Figure 2: Loading Conditions printout .......................................................................................................................... 8

Figure 3: Main Summary printout ................................................................................................................................. 9

Figure 4: Weight and Load Budget printout ................................................................................................................ 10

Figure 5: Global CoG printout ..................................................................................................................................... 10

Figure 6: Main Variations printout .............................................................................................................................. 11

Figure 7: Weight Forecast printout .............................................................................................................................. 12

Figure 8: Main Trend Graphs printout ......................................................................................................................... 13

Figure 9: Area & Discipline Summary printout .......................................................................................................... 14

Figure 10: As-built / Weighing Data printout .............................................................................................................. 15


Figure 11: Variation from Last Report by Area & Discipline printout ........................................................................ 16

Figure 12: Trend Graphs by Area printout .................................................................................................................. 17

Figure 13: CoG Plots printout...................................................................................................................................... 18

Figure 14: Area Weight printout .................................................................................................................................. 19

Figure 15: Discipline Assumptions printout ................................................................................................................ 20

Figure 16: Global Origin printout ................................................................................................................................ 21

Figure 17: Area Designations printout......................................................................................................................... 22

Figure 18: Weight Allowance and Contingency printout ............................................................................................ 23

Figure 19: Weight Installation Codes printout............................................................................................................. 23

Figure 20: Weight Phase Codes printout ..................................................................................................................... 24

Figure 21: Weight Status Codes printout ..................................................................................................................... 24

Figure 22: Area Codes printout ................................................................................................................................... 24

……


Abstract

The purpose of this paper is to suggest standard layouts for printouts to be included in the weight report for

engineering and construction of offshore structures. The proposals are based on a systematic review of

weight reports for existing oil platforms built for the North Sea and Gulf of Mexico during the last 10 year.

The content of these weight reports are systemized according to the ISO standard for weight control, as

well as the Statoil requirement for weight control.

Requirements for weight control of offshore structures are described in the ISO standard 19901-5

“Petroleum and natural gas industries – Specific requirements for offshore structures – Part 5: Weight

control during engineering and construction”. This document includes definitions, weight control classes,

weight- and load budgets, weight reporting, requirements for suppliers, requirements for weighing in

addition to various appendixes. In this paper we will focus on chapter 6.3 “Requirements to the weight

report”. The content of existing weight reports are systemized and mapped to the defined chapters

(printouts/tables) that are required according to the ISO standard.

The Norwegian energy company Statoil has a technical requirement for weight control titled “TR2352

Weight control requirements for topside and substructures”. This document specifies among others which

data fields the weight database should include as a minimum. One of the results of this paper is an

overview of which data fields are included in the various weight report chapters required by the ISO

standard.

This paper can serve as a specification of the data fields and printouts that should be included in a weight

control system for offshore structures to fulfill the requirements of the ISO-19901-5. The layouts of the

printouts are in focus. In this paper it is also discussed whether it’s realistic to design a weight control

system that automatically or semi-automatically produces the weight reports.

Stein Bjørhovde is one of the founders and head of development of BAS Engineering. Mr. Bjørhovde has a

Master of Science Degree in Ship Design, and has been developing the weight engineering software

ShipWeight since 1993. He has also been involved in development of other weight control software, in

addition to being a consultant doing weight estimation and monitoring in the offshore industry. He has

more than 15 years’ experience in weight estimation of new ship designs for several Norwegian and

international ship designers and yards.


Background

A weight report for offshore structures is typically released every second month during the engineering and

construction period. A large offshore project can take years to complete and the numbers of revision of the

weight report can be significant. The amount of work put in to preparing these weight reports is therefore

also quit significant, and it might be that more standardization can reduce time consumption and increase

quality both when it comes to reliability of the figures, but also in terms of readability.

In the Norwegian offshore industry the content of a weight report has been quite standardized due to

Norwegian Standards (NS 2128 – NS2131 from 1994) that have been around for a long time, and oil

companies having similar requirements. But even though the overall content has been standardized, the

order and format of the figures, tables and text can differ quit a lot. And when the industry has become

more internationalized over the years, the demand of standardization is even higher.

A key document when it comes to standardization is the ISO standard for weight control for offshore

structures during engineering and construction from 2003. In addition to this standard the oil companies

will have separate requirements when it comes to weight control and reporting. A standardized format for a

weight control report must be based on these two requirement sources.

The goal of this Paper

The main goal of this paper is to present suggestions to formats of printouts included in the weight reports

according to the report content specified in the ISO standard.

A second goal is evaluate whether weight reports can be generated automatically from the weight control

system, as a replacement of todays practice of putting together a document from a word processing system.

ISO 19901-5: Weight control during engineering and construction

Requirements for weight control of offshore structures are described in the ISO standard 19901-5

“Petroleum and natural gas industries – Specific requirements for offshore structures – Part 5: Weight

control during engineering and construction”. This document includes definitions, weight control classes,

weight- and load budgets, weight reporting, requirements for suppliers, requirements for weighing in

addition to various appendixes. In this paper we will focus on chapter 6.3 “Requirements to the weight

report”.

The ISO standard defines three different weight control classes. In this paper we will only look into class A

which involves projects with high sensitivity when it comes to weight and center of gravity.

Chapter 6.3 in the ISO standard document describes requirements for weight reporting. The content of a

weight report is divided into 5 main chapters with several subchapters:

1. Main summary

2. Summary and conclusions to the report

3. Area/module reports

4. Special reports

5. Annexes to the report

Statoil requirement TR2352: Weight control requirements for topsides

and substructures

The Norwegian energy company Statoil has a technical requirement for weight control titled “TR2352

Weight control requirements for topside and substructures”. This requirement document cover new

building projects in the engineering and construction phase. The technical requirement “TR1244 Technical

requirements for cost estimate classes – offshore projects” with appendixes A1-4 covers Pre-Feed and

modification projects.

The TR1244 document refers to the ISO standard 19901-5 both in general and when it comes to more

specific topics. TR1244 requires that weight control is performed according to class A.


The TR2352 document specifies among others which data fields the weight database should include as a

minimum for each weight record. These fields are described and discussed in the following chapters.

Identification (key) and description fields

Drawing number (key): The drawing number from which the weight has been identified or

calculated.

Piece number (key): The unique piece within a drawing number, e.g. plate girder M10-2356

shown on a structural deck drawing. The data field is a text field with maximum 20 characters.

Weight phase code (key): A coding to identify during which phase a piece number will be

installed and present.

Piece designation: The designation of the piece number, e.g. HE200A, Pl 20 mm.

Date: The date when a piece number was entered or revised in the weight control database.

Unique identification of items

The combination of the three fields Drawing number, Piece number and Weight phase code shall uniquely

identify a record. The logic behind this is that a piece of material (item) has a unique position number on a

drawing. For a unique item e.g. weight and CoG can vary in different phases of the project because of

temporary location due to transport, infill areas, partially installation etc. For these reasons the same item

can occur as several records in the database; with identical Drawing and Piece number, but varying Phase

codes.

Equipment

For equipment items both drawing and piece numbers must be identical to the tag number for the weight

carrying item (skid). But the use of both drawing number and piece number it not logical to identify

equipment items because the tag number is unique by itself and there’s not necessarily one specific drawing

describing an equipment skid.

Data from 3D systems

More and more weight information are these days exported from 3D data models. Identification and

traceability on item level can be challenging. Each item in the 3D model is uniquely identified for the

model, but the ID is often a complex strings giving no other meaning than identifying the 3D object in the

data model. Globally unique identifiers (GUID) can be used for this purpose and this ID is a 32-character

hexadecimal string, often randomly generated. The Statoil requirement specifies maximum 20 characters

for the piece number and this is a potential conflict.

Topics for further discussion and consideration

It might be more practical to use one large field for unique identification of records instead of both drawing

number and piece number, due to handling of 3D model data and equipment data.

It might also be practical to have a field for identifying the person entered the record in the database.

Quantity, weight and co-ordinate fields

Number off: Number of identical pieces. Only integer numbers shall be used.

Size: The size of each piece, e.g. 2,350 m for the length of an HE200A-beam.

Unit weight: Unit weight for the piece, e.g. 42, 3 kg for unit length (1m) of an HE200A-beam.

Dry weight: The dry weight of each piece in kg, that is the product of Number off x Size x Unit

weight, e.g. 1 x 2,350 x 42,3 = 99 kg for one HE200A with a length of 2,350 m.

Content: The weight of the content in kg in a piping line, vessel, tank etc.


Co-ordinates: The co-ordinates in the platform north direction, the platform east direction and

Elevation.

Net weight vs. gross weight

Net weight for an item is weight without any contingencies or allowances. According to the ISO standard

gross weight is net weight including allowances while contingency is the difference between the gross

weight and the budget weight. But it’s not unusual that the terms contingency and allowance are mixed

when applying percentage factors to the net weight to obtain the reported weight. Anyway, it is the reported

weights that are used in all calculation of totals and subtotals throughout the weight report. The percentage

factors used to calculate gross weight are dependent on weight status and usually also on discipline. When

gross weight is not stored in a separate field for each record, there is no direct relation between the weights

in the database and the results in the report without doing a calculation.

In the ISO standard gross weight is referred to as reported weight.

Content and co-ordinates

Content weight is applied to equipment items to calculate operating weight. Operating weight is defined as

gross weight including content. But the center of gravity for the equipment item itself (dry weight) and the

content are seldom identical. If not two sets of co-ordinate fields are applied to each record, dry weight and

content has to be defined as two different records. And if this is the case, the need for a separate field for

content can be discussed because content could be identified by other existing fields like ItemType which is

used to identify bulk, equipment and structure.

Local coordinates

Local co-ordinates for equipment skids are specified by the supplier on a weight datasheet. The global co-

ordinate for the skid will refer to the origin of the item, often located in the southwest corner of the support

structure. If there are only one set of co-ordinates in the item database, these will refer to total co-ordinates

which are global- plus local co-ordinates.

But if the equipment arrangement is relocated, orientation is changed or local coordinates are updated on

new revisions of weight datasheet (e.g. du to weighing), it will be difficult to enter new total co-ordinates

without referring backup information. It should therefore be considered whether the weight record should

contain fields for both local and global co-ordinates and whether total co-ordinates also should be stored.


It should be considered to implement a separate field for weight records for gross weight. In cases where

several factors / percentage are added to the net weight to calculate gross weight (both allowance and

contingency) there might be a need for separate fields for these calculated add-ons.

It should also be considered whether it is necessary to have a separate field for content weight, and if so

how different coordinate for dry weight and content weight shall be handled.

Fields for local and global co-ordinates in addition to total are also an issue.

Information fields

Originator code: The originator code according to the Engineering Numbering System (ENS) of

the organization or contractor who have calculated or revised the weight data for a piece number.

Discipline code: The discipline code according to the ENS.

System code: The system code according to the ENS.

Area code: The area code according to the ENS.

Drawing revision: The revision of the drawing from which the weight has been identified or

calculated.


Weight status code: A coding to identify the level of accuracy of the weight data of each piece

number. See sub-section 2.4.2 of this document.

Weight installation code: A coding to identify whether a piece is installed or not on a

module/installation.

The Physical Breakdown Structure (PBS): A hierarchical structure which defines the

physical/functional component of a project. For all projects at the Norwegian Continental Shelf

(NCS) the PBS shall be used at level four in accordance with NORSOK Z-014. For other projects

the NORSOK Z-014 is a recommended guideline.

Code of Resources (COR): A hierarchical structure which defines project resources. For all

projects at the Norwegian Continental Shelf (NCS) the COR shall be used at level three in

accordance with NORSOK Z-014. For other projects the NORSOK Z-014 is a recommended

guideline.

Package number: The procurement package number.

Compensation code: Contract Appendix B compensation cost item code at lowest level (for

modification projects).

Additional fields needed to comply to ISO standard

The information fields listed in the Statoil requirement document are considered a minimum. These fields

are those necessary to generate content for the compulsory chapters in the weight report according to the

ISO standard.

Lift code

One of the chapters that are considered optional according to the ISO standard is lifting reports. A field for

Lifting code is not listed in TR2352 and should therefore be considered. Especially because Statoil in

chapter 5.1 of TR 2352 list lift report as one of the minimum required topics included in weight reports.

Lift code is neither included in specifications for Master Equipment list or Material Take-off list in Statoil

requirement TR1244 covering weight reporting for modification and early phase projects.

Displacement code

For floaters it is required to report lightship weight (ref. ISO 19901-5, ch. 6.3.2.1). Lightship is normally

complete dry weight included content from some systems. It will therefore be necessary to identify all

items included in the lightship weight (LW) with a specific code. All other items should be either

deadweight or temporary. This is also an argument for keeping content in separate records, ref. previous

discussion.


As mentioned, fields for Lift code and Displacement should be considered added to the minimum field

requirement.

Appendix 4 for the Statoil TR1244 requirement covering modification project specifies several more fields

for Master Equipment List (MEL) and Material Take-off lists. And this is fields not only related to

modification phases and packages. It should therefore be considered to update the list of required record

fields in TR2352 according to those record fields required in TR 1244.


Weight report content

According to the ISO standard the following topics / chapters should be included (as a minimum) in a

weight report:

1. Introduction

1.1. Major assemblies

1.2. Cut-off date

1.3. Weight information provided by others

1.4. List of reported loading conditions

1.5. Discrepancies

2. Summary and conclusion to the report

2.1. Main summary

2.2. Weight and load budget (WLB)

2.3. Global CoG plot

2.4. Main variations from the previous report

2.5. Weight forecast

2.5.1. General

2.5.1.1. Approved design changes not included

2.5.1.2. Proposed design changes

2.5.1.3. Possible weight changes

2.5.2. Main-trend graphs

2.6. Main weight printout summaries by area and discipline

2.7. As built / weighing data

3. Area / module report

3.1. Variation from last report by area and discipline

3.2. Trend graphs by area

3.3. CoG plots

3.4. Area weight printouts

4. Special reports (optional)

4.1. System reports

4.2. Sub-area report or sub-assemblies report

4.3. Secondary lift report

5. Annexes to the report

5.1. Assumptions

5.1.1. General assumptions

5.1.2. Discipline assumptions

5.2. Area designations and global origin

5.3. Weight allowance and contingency

5.4. Report codes

5.4.1. Weight installation codes

5.4.2. Weight phase codes

5.4.3. Weight status codes

5.4.4. Area codes

5.5. References

5.6. Other descriptions

A systematic review of a number of weight report from North Sea and Gulf of Mexico for the last 10-15

years has given us a good overview of how the content of these report comply with the topics specified in


the ISO standard. An overview of mapping between ISO standard chapters and chapter numbering in

weight reports from some past offshore projects can be seen in Appendix 2.

In general terms it can be said that the content of the weight reports corresponds good with what the ISO

standard describes as necessary content for a weight report, but the order of how this content appears in the

reports and the actual layouts and formats varies a lot.

The ISO standard forms a template of how the chapters of a weight report can be organized.

Layout of printouts and tables

When it comes to layout of printouts and tables, we have tried to pick out the best cases from these weight

reports we have reviewed as a basis for this paper.

A key content of a weight report is the main summary and as the examples from various weight reports in

appendix 1 shows, the layout and content of the summary tables varies a lot.

In the following subchapters layout suggestions for printouts relevant for the ISO specified weight report

chapters are presented. These are marked as hyperlinks in the above list.

1. Introduction

“All weight reports shall have an introduction giving information necessary to understand the content of

and background to the report.” ISO 19901-5: 2003

1.1 Major assemblies

“a) Which major assemblies are included” ISO 19901-5: 2003

Figure 1: Major Assemblies printout

1.2 Cut-off date

“b) The cut-off date” ISO 19901-5: 2003

1.3 Weight information provided by others

“c) Weight information provided by others” ISO 19901-5: 2003

Client: OIL COMPANY Contractor: RIG CONSTRUCTOR

Doc.no.: XX-XX-XX-XXX-XXXXX Page: x of 50

Doc.title: Weight Control Report Rev.date: 01.05.2012

Printout: MAJOIR ASSEMBLIES Revision: 06F

Code Title

C00 Deckbox

L00 Living quarter Living quarter L00 includes helideck

U00 Utility modules

P00 Process modules

D00 Drilling modules Includes subareas D10, D20, D30 og D40 (tower)

F00 Flare

T00 Topside

Description


1.4 List of reported loading conditions

“d) List of reported loading conditions” ISO 19901-5: 2003

Figure 2: Loading Conditions printout




Printout: LOADING CONDITIONS Revision: 06F

Code Title

LC50 Transport to offshore field Weight of lifting slings and spreader bars etc. are included

LC60 Lift at offshore field Weight of lifting slings and spreader bars etc. are NOT included.

LC70 Offshore dry installed

LC90 Future operating installed (max load)

Description


2.1 Main summary

“The main summary shall contain all current main-weight data, including CoG, and comparisons between

those data and the WLB. The reported weights shall reflect all relevant loading conditions and all main

assemblies. Any major problems that need to be highlighted shall also be included here.

For floating structures, a block diagram showing all major elements of the displacement, lightship and

deadweight may be included. An example of such a block diagram is given in Annex D.” ISO 19901-5: 2003

Figure 3: Main Summary printout




Printout: MAIN SUMMARY Revision: 06F

LC50 - Transport to offshore field

WEIGHT Last month Variation This month Budget Margin CoG East Last month Variation This month Budget Margin

C00 - Deckbox 10 250 30 10 280 10400 120 C00 - Deckbox 331,600 0,400 332,000 330,000 -2,000

L00 - Living quarter 1 315 5 1 320 1400 80 L00 - Living quarter 277,200 -0,200 277,000 280,000 3,000

U00 - Utility modules 4 270 -20 4 250 4400 150 U00 - Utility modules 303,800 0,200 304,000 300,000 -4,000

P00 - Process modules 1 720 30 1 750 1900 150 P00 - Process modules 328,100 -0,100 328,000 330,000 2,000

D00 - Drilling modules 6 450 0 6 450 6250 -200 D00 - Drilling modules 372,200 -0,200 372,000 370,000 -2,000

F00 - Flare 235 5 240 250 10 F00 - Flare 390,700 0,300 391,000 395,000 4,000

T00 - Topside 24 240 50 24 290 24600 310 T00 - Topside 334,880 0,149 335,028 332,612 -2,417

COMMENTS: CoG North Last month Variation This month Budget Margin

C00 - Deckbox 119,600 -0,100 119,500 120,000 0,500

L00 - Living quarter 120,300 0,100 120,400 120,000 -0,400

U00 - Utility modules 121,100 0,100 121,200 120,000 -1,200

P00 - Process modules 119,000 -0,500 118,500 120,000 1,500

D00 - Drilling modules 121,400 -0,200 121,200 120,000 -1,200

F00 - Flare 120,500 -0,300 120,200 120,000 -0,200

T00 - Topside 120,347 -0,115 120,233 120,000 -0,233

CoG Elev. Last month Variation This month Budget Margin

C00 - Deckbox 508,300 0,200 508,500 510,000 1,500

L00 - Living quarter 535,600 -0,100 535,500 540,000 4,500


P00 - Process modules 530,200 1,300 531,500 530,000 -1,500

D00 - Drilling modules 527,000 1,200 528,200 527,000 -1,200

F00 - Flare 528,800 -0,300 528,500 530,000 1,500

T00 - Topside 520,015 0,625 520,640 520,815 0,175

LC60 - Lift at offshore field

WEIGHT Last month Variation This month Budget Margin CoG East Last month Variation This month Budget Margin

C00 - Deckbox 10 100 30 10 130 10250 120 C00 - Deckbox 331,600 0,400 332,000 330,000 -2,000

L00 - Living quarter 965 5 970 1050 80 L00 - Living quarter 277,200 -0,200 277,000 280,000 3,000

U00 - Utility modules 4 170 -20 4 150 4300 150 U00 - Utility modules 303,800 0,200 304,000 300,000 -4,000

P00 - Process modules 1 670 30 1 700 1850 150 P00 - Process modules 328,100 -0,100 328,000 330,000 2,000

D00 - Drilling modules 6 300 0 6 300 6100 -200 D00 - Drilling modules 372,200 -0,200 372,000 370,000 -2,000

F00 - Flare 185 5 190 200 10 F00 - Flare 390,700 0,300 391,000 395,000 4,000

T00 - Topside 23 390 50 23 440 23750 310 T00 - Topside 335,552 0,153 335,706 333,179 -2,527

COMMENTS: CoG North Last month Variation This month Budget Margin

C00 - Deckbox 119,600 -0,100 119,500 120,000 0,500

L00 - Living quarter 120,300 0,100 120,400 120,000 -0,400


P00 - Process modules 119,000 -0,500 118,500 120,000 1,500

D00 - Drilling modules 121,400 -0,200 121,200 120,000 -1,200

F00 - Flare 120,500 -0,300 120,200 120,000 -0,200

T00 - Topside 120,345 -0,117 120,228 120,000 -0,228

CoG Elev. Last month Variation This month Budget Margin

C00 - Deckbox 508,300 0,200 508,500 510,000 1,500

L00 - Living quarter 535,600 -0,100 535,500 540,000 4,500


P00 - Process modules 530,200 1,300 531,500 530,000 -1,500

D00 - Drilling modules 527,000 1,200 528,200 527,000 -1,200

F00 - Flare 528,800 -0,300 528,500 530,000 1,500

T00 - Topside 519,737 0,635 520,372 520,497 0,125

This report shows an increase in the reported dry weight of 50 tonnes since last

report. The margins are 310 tonnes.

The margins for CoG East are negative by 2,417 meters.

The margins for CoG North are negative by 0,233 meters.

This report shows an increase in the reported dry weight of 50 tonnes since last

report. The margins are 310 tonnes.

The margins for CoG East are negative by 2,527 meters.

The margins for CoG North are negative by 0,228 meters.


2.2 Weight and load budget (WLB)

“Known changes to the WLB, if relevant (including reasons for them), shall be documented. Expected

changes to the WLB and their potential consequences shall also be included.” ISO 19901-5: 2003

Figure 4: Weight and Load Budget printout

2.3 Global CoG plot

“Global CoG plots shall be included if applicable to the project. The global location shall be presented

relative to the various CoG envelopes. Weight and CoG shall also be presented in relation to each other.”

ISO 19901-5: 2003

Figure 5: Global CoG printout




Printout: WEIGHT & LOAD BUDGET Revision: 06F

LC70 - Offshore dry installed

Area Description

Rep.dry

wgt. Budget Margin

Change

Order

Inital

Budget

Company

Reserves Future

Not to

Exceed

C00 Deckbox 9 880 10 000 120 65 9 935 199 2 866 13 000

L00 Living quarter 920 1 000 80 5 995 20 -15 1 000

U00 Utility modules 3 850 4 000 150 35 3 965 79 956 5 000

P00 Process modules 1 650 1 800 150 5 1 795 36 969 2 800

D00 Drilling modules 6 200 6 000 -200 75 5 925 119 1 957 8 000

F00 Flare 190 200 10 0 200 4 -4 200

T00 Topside 22 690 23 000 310 185 22 815 456 6 729 30 000

Client: OIL COMPANY Contractor:RIG CONSTRUCTOR



Printout: GLOBAL COG PLOT Revision: 06F


Rev. CoG East CoG North CoG Elev.

Budget 333,609 120,000 520,435

01F 333,500 119,800 518,200

02F 333,800 120,100 518,900

03F 334,500 120,200 519,200

04F 335,600 120,300 519,450

05F 336,000 120,342 519,661

06F 336,152 120,223 520,296

119,5

120,0

120,5

333,0 334,0 335,0 336,0 337,0

No

rth

East

Horizontal envelope

Budget

01F

02F

03F

04F

05F

06F518,0

519,0

520,0

521,0

333,0 334,0 335,0 336,0 337,0

Enve

lop

e

East

Vertical envelope

Budget

01F

02F

03F

04F

05F

06F


2.4 Main variations from the previous report

“Only the major changes in weight and CoG shall be included. A short explanation of why the changes

occurred shall be given. If the changes relate to more than one phase in the project, the explanation shall

give details of this.” ISO 19901-5: 2003

Figure 6: Main Variations printout




Printout: MAIN VARIATIONS Revision: 06F


Area Type Discipline Rep.wgt.

C00 Equipment Temp containers and equipment 5

Bulk Electrical Cables updated 6

Safety Passive fireprotection 2

Instrument components and cables 1

Architect Coating and insulation 2

Piping Pipe support updated 6

Surface protection New takeoff on paint 1

Structural Outfitting structure Outfitting updated from As built drawings, temp located hookup material 7

Total 30

D00 Equipment See drilling wgt.rep. 0

Bulk See drilling wgt.rep. 0

Structural See drilling wgt.rep. 0

Total 0

F00 Equipment No changes 0

Bulk Minor adjustements 2

Structural Minor adjustements 3

Total 5

L00 Equipment No changes 0

Bulk Telecom Temporares for hookup phase -2

Structural Reinforcement due to transport 7

Total 5

U00 Equipment Temp. containers and equipment 5

Bulk Piping Temporaires for hookup phase -40

Surface protection New take-off 5

Structural Temp. located hookup material 10

Total -20

P00 Equipment New weight certificate 5

Bulk Piping Pipe support updated 10

Surface protection New take-off 5

Structural Temp. located hookup material 10

Total 30

Grand total 50

Change


2.5 Weight forecast

2.5.1 General

“The weight forecast shall be included in the report as an aid to weight management, and to give an early

warning of weight trends.

As a minimum, the following shall be included, where applicable:

a) approved design changes not yet included in the reported weights;

b) proposed design changes not yet approved;

c) possible weight changes relating to any design change under review or any alternative to the design

which has a potential weight impact.” ISO 19901-5: 2003

Figure 7: Weight Forecast printout




Printout: WEIGTH FORECAST Revision: 06F


Area Type Discipline Description

VOR

status Wgt. impact

Company

reserve

impact

C00 Equipment Frequency control HVAC motors APP 15 15

Bulk Electrical

Safety Upgraded MOB boat system PEN 45 45

Instrument

Architect New walls 27

Piping

Surface protection New walls 1

Structural Outfitting structure MOB boat system PEN 3 3

Total 91 63

D00 Equipment Replacement of crane arrangement 54

Bulk

Structural Replacement of crane arrangement 14

Total 68 0

L00 Equipment 0

Bulk Safety Helideck surface PEN 4 2

Structural

Total 4 2

P00 Equipment Increased size of test separator PEN 15 15

Bulk Piping Test separator PEN 3 3

Instrument Test separator PEN 1 1

Structural Outfitting structure Test separator PEN 2 2

Total 21 21

Gran total 184 86


2.5.2 Main trend graphs

“Main-trend graphs shall be produced and presented for all relevant loading conditions.

Trend graphs shall, as a minimum, contain reported weight and WLB data. Dry weight and operating

weight shall be shown where applicable.” ISO 19901-5: 2003

Figure 8: Main Trend Graphs printout




Printout: MAIN TREND GRAPHS Revision: 06F


Revision 01F 02F 03F 04F 05F 06F

Date 01.07.2011 01.09.2011 01.11.2011 01.01.2012 01.03.2012 01.05.2012

Not to exceed 30 000 30 000 30 000 30 000 30 000 30 000

Future 6 729 6 729 6 729 6 729 6 729 6 729

Company budget 23 271 23 271 23 271 23 271 23 271 23 271

Company reserves 271 221 191 126 86 86

Change Order 0 50 80 145 185 185

Contractor budget 23 000 23 050 23 080 23 145 23 185 23 185

Margin 1 500 1 315 1 035 930 725 495

Rep.dry.wgt 21 500 21 735 22 045 22 215 22 460 22 690

20 000

22 000

24 000

26 000

28 000

30 000

32 000

Re

p.

wgt

.

Not to exceed

Company budget

Contractor budget

Rep.dry.wgt


2.6 Main weight printout summaries by area and discipline

“The printout summaries shall, as a minimum show the total assembly weight for all relevant loading

conditions. CoGs shall also be included. “ISO 19901-5: 2003

Figure 9: Area & Discipline Summary printout




Printout: AREA & DISCIPLINE SUMMARY Revision: 06F


Area Description EQUIP. TOTAL

Total Electrical Safety HVAC Inst. Architect. Piping Surf.prot. Telecom Total

Primary

struct.

Second.

struct.

Outf.

struc. Total Rep. wgt.

C00 Deckbox 2 000 207 165 33 365 220 2 200 80 10 3 280 2 200 1 100 1 700 5 000 10 280

L00 Living quarter 40 25 0 15 1 340 5 5 20 411 600 0 269 869 1 320

U00 Utility modules 1 000 150 10 60 25 445 190 35 15 930 1 100 500 720 2 320 4 250

P00 Process modules 300 80 2 30 40 150 130 15 5 452 448 300 250 998 1 750

D00 Drilling modules 1 500 160 30 55 55 370 420 60 0 1 150 3 000 450 350 3 800 6 450

F00 Flare 5 0 3 0 0 0 15 1 0 19 170 40 6 216 240

T00 Topside 4 845 622 210 193 486 1 525 2 960 196 50 6 242 7 518 2 390 3 295 13 203 24 290

CoG East 335,028 19,9 % 10,0 % 3,4 % 3,1 % 7,8 % 24,4 % 47,4 % 3,1 % 0,8 % 25,7 % 56,9 % 18,1 % 25,0 % 54,4 %

CoG North 120,233 Eq./Tot. Bulk/Tot. Tot.st./Tot.

CoG Elev. 520,640




Primary

struct.

Second.

struct.

Outf.


C00 Deckbox 1 980 205 165 30 350 220 2 180 80 10 3 240 2 130 1 100 1 680 4 910 10 130

L00 Living quarter 30 20 0 10 1 300 4 4 15 354 450 0 136 586 970

U00 Utility modules 990 140 10 55 25 440 185 30 15 900 1 050 500 710 2 260 4 150



F00 Flare 3 0 0 0 0 0 12 1 0 13 139 30 5 174 190

T00 Topside 4 763 600 205 175 466 1 475 2 911 190 45 6 067 7 149 2 370 3 091 12 610 23 440

CoG East 335,028 20,3 % 9,9 % 3,4 % 2,9 % 7,7 % 24,3 % 48,0 % 3,1 % 0,7 % 25,9 % 56,7 % 18,8 % 24,5 % 53,8 %


CoG Elev. 520,640




Primary

struct.

Second.

struct.

Outf.


C00 Deckbox 1 950 200 160 30 340 115 2 150 80 10 3 085 2 115 1 080 1 650 4 845 9 880

L00 Living quarter 28 20 0 10 1 280 4 4 14 333 430 0 129 559 920

U00 Utility modules 900 130 10 50 20 400 170 30 10 820 1 000 480 650 2 130 3 850



F00 Flare 3 0 0 0 0 0 12 1 0 13 139 30 5 174 190

T00 Topside 4 551 580 200 170 451 1 295 2 846 190 39 5 771 7 064 2 330 2 974 12 368 22 690

CoG East 335,028 20,1 % 10,1 % 3,5 % 2,9 % 7,8 % 22,4 % 49,3 % 3,3 % 0,7 % 25,4 % 57,1 % 18,8 % 24,0 % 54,5 %


CoG Elev. 520,640

LC90 - Future operation installed (max load)



Primary

struct.

Second.

struct.

Outf.


C00 Deckbox 4 100 250 180 30 430 220 2 600 80 10 3 800 2 200 1 100 1 680 4 980 12 880

L00 Living quarter 28 20 0 10 1 280 4 4 14 333 430 0 129 559 920

U00 Utility modules 1 600 150 10 60 25 450 200 30 15 940 1 050 500 760 2 310 4 850

P00 Process modules 1 230 80 0 30 40 150 120 15 5 440 440 300 240 980 2 650


F00 Flare 3 0 0 0 0 0 12 1 0 13 139 30 5 174 190

T00 Topside 10 341 655 220 180 546 1 465 3 346 190 44 6 646 7 199 2 370 3 134 12 703 29 690

CoG East 335,028 34,8 % 9,9 % 3,3 % 2,7 % 8,2 % 22,0 % 50,3 % 2,9 % 0,7 % 22,4 % 56,7 % 18,7 % 24,7 % 42,8 %


CoG Elev. 520,640

Bulk/Tot.bulk. Struc./Tot.struc.

BULK STRUCTURAL

BULK STRUCTURAL

BULK STRUCTURAL



BULK STRUCTURAL



2.7 As built / weighing data

“Summaries of final weighing results shall be included where relevant.” ISO 19901-5: 2003

Figure 10: As-built / Weighing Data printout




Printout: WEIGHING DATA Revision: 06F

Unit Date Comment Weight CoG East CoG North. CoG Elev.

L10 - Living quarter structure

Predicted 13.11.2011 620 275,567 120,476 535,756

Weighed 15.11.2011 586 275,220 120,550

Difference Implemented in database -34 -0,347 0,074

-5,5 %

D10 - Drilling module

Predicted 12.12.2011 2 122 352,765 122,987 515,345

Weighed 14.12.2011 2 150 353,110 122,550

Difference Negleced 28 0,345 -0,437

1,3 %

D40 - Derrick

Predicted 27.01.2012 1 256 355,423 125,300 540,812

Weighed 28.01.2012 1 274 354,990 123,900

Difference Neglected 18 -0,433 -1,400

1,4 %

F00 - Flare tower

Predicted 14.02.2012 201 390,700 120,200 528,800

Weighed 17.02.2012 205 390,320 120,000

Difference Neglected 4 -0,380 -0,200

2,0 %

C00 - Deckbox

Predicted 03.03.2012 8 587 331,400 119,600 508.3

Weighed 06.03.2012 8 345 330,400 120,600

Difference Implemented in database -242 -1,000 1,000

-2,8 %


3.1 Variation from last report by area and discipline

“The variations from the previous report shall describe the weight changes (and reasons for them) per

discipline by area. Comparisons to the WLB may be included and various project loading conditions shall

be reflected where relevant.” ISO 19901-5: 2003

Figure 11: Variation from Last Report by Area & Discipline printout




Printout: AREA & DISCIPLINE VARIATION Revision: 06F




Primary

struct.

Second.

struct.

Outf.


C00 Deckbox 5 6 2 1 2 6 1 18 7 7 30

L00 Living quarter -2 -2 7 7 5

U00 Utility modules 5 -40 -40 10 10 -25

P00 Process modules 5 10 10 3 3 18

D00 Drilling modules 0 0 0

F00 Flare 2 2 0 2

T00 Topside 15 6 2 0 1 2 -22 1 -2 -12 3 17 7 27 30

CoG East 0,149 50,0 % -50,0 % -16,7 % 0,0 % -8,3 % -16,7 % 183,3 % -8,3 % 16,7 % -40,0 % 11,1 % 63,0 % 25,9 % 90,0 %

CoG North -0,115 Eq./Tot. Bulk/Tot. Tot.st./Tot.

CoG Elev. 0,625




Primary

struct.

Second.

struct.

Outf.


C00 Deckbox 5 6 2 1 2 6 1 18 7 7 30





F00 Flare 2 2 0 2

T00 Topside 15 6 2 0 1 2 -22 1 -2 -12 3 17 7 27 30

CoG East 0,153 50,0 % -50,0 % -16,7 % 0,0 % -8,3 % -16,7 % 183,3 % -8,3 % 16,7 % -40,0 % 11,1 % 63,0 % 25,9 % 90,0 %


CoG Elev. 0,635




Primary

struct.

Second.

struct.

Outf.


C00 Deckbox 5 6 2 1 2 6 1 18 7 7 30





F00 Flare 2 2 0 2

T00 Topside 15 6 2 0 1 2 -22 1 -2 -12 3 17 7 27 30

CoG East -2,543 50,0 % -50,0 % -16,7 % 0,0 % -8,3 % -16,7 % 183,3 % -8,3 % 16,7 % -40,0 % 11,1 % 63,0 % 25,9 % 90,0 %


CoG Elev. -0,636




Primary

struct.

Second.

struct.

Outf.


C00 Deckbox 5 6 2 1 2 6 1 18 7 7 30





F00 Flare 2 2 0 2

T00 Topside 15 6 2 0 1 2 -22 1 -2 -12 3 17 7 27 30

CoG East 0,145 50,0 % -50,0 % -16,7 % 0,0 % -8,3 % -16,7 % 183,3 % -8,3 % 16,7 % -40,0 % 11,1 % 63,0 % 25,9 % 90,0 %


CoG Elev. 0,658

BULK STRUCTURAL


BULK STRUCTURAL

BULK STRUCTURAL



BULK STRUCTURAL



3.2 Trend graphs by area

“Trend graphs by area shall be included where relevant. These trend graphs shall contain reported weights,

and the WLB shall be included if established.” ISO 19901-5: 2003

Figure 12: Trend Graphs by Area printout




Printout: TREND GRAPHS BY AREA Revision: 06F


Revision 01F 02F 03F 04F 05F 06F

Date 01.07.2011 01.09.2011 01.11.2011 01.01.2012 01.03.2012 01.05.2012

Not to exceed 13 000 13 000 13 000 13 000 13 000 13 000

Future 2 734 2 734 2 734 2 734 2 734 2 734

Company budget 10 266 10 266 10 266 10 266 10 266 10 266

Company reserves 331 319 308 285 266 201

Change Order 0 12 23 46 65 65

Contractor budget 9 935 9 947 9 958 9 981 10 000 10 000

Margin 435 317 148 196 150 120

Rep.dry.wgt 9 500 9 630 9 810 9 785 9 850 9 880

9 000

9 500

10 000

10 500

11 000

11 500

12 000

12 500

13 000

13 500

Re

p.

wgt

.

C00 - Deckbox

Not to exceed

Company budget

Contractor budget

Rep.dry.wgt


3.3 CoG plots

“CoG plots by area may be included where relevant.

The CoG location for a fixed structure shall be presented relative to the lifting control envelope, the lifting

points, the support point or the axis, as appropriate. Weight and CoG coordinates shall also be presented.

The inclusion of CoG plots for a floating structure is optional. Where included, they shall be presented

relative to the requirements of the project.” ISO 19901-5: 2003

Figure 13: CoG Plots printout




Printout: AREA CoG PLOTS Revision: 06F

C00 - DeckboxLC70 - Offshore dry installed

Rev. CoG East CoG North CoG Elev.

Budget 330,000 120,000 510,000

01F 329,600 119,500 508,050

02F 329,600 119,900 508,140

03F 330,450 120,320 508,420

04F 330,830 119,830 508,380

05F 331,600 119,600 508,300

06F 332,000 119,500 508,500

119,0

119,5

120,0

120,5

329,0 330,0 331,0 332,0 333,0

No

rth

East

Horizontal envelope

Budget

01F

02F

03F

04F

05F

06F507,0

508,0

509,0

510,0

511,0

329,0 330,0 331,0 332,0 333,0En

velo

pe

East

Vertical envelope

Budget

01F

02F

03F

04F

05F

06F


3.4 Area weight printouts

“Area printouts shall be included for the relevant loading conditions. These printouts should as a minimum,

contain the WLB, reported weight and CoG by discipline, together with any variations from the previous

report. Temporaries shall either be included on these printouts, or printed separately.” ISO 19901-5: 2003

Figure 14: Area Weight printout




Printout: AREA WEIGHT Revision: 06F


Area Description

Net.dry.

wgt.Allowance/

Contingency

Rep.dry

wgt.

Rep.dry

wgt. Rep. dev.

Rep.dry

wgt. Rep.dev. CoG East CoG North CoG Elev.

C00 Deckbox 10 108 172 10 280 10 250 30 10 400 -120 332,000 119,500 508,500

L00 Living quarter 1 299 21 1 320 1 315 5 1 400 -80 277,000 120,400 535,500

U00 Utility modules 4 150 100 4 250 4 270 -20 4 400 -150 304,000 121,200 529,000

P00 Process modules 1 691 59 1 750 1 720 30 1 900 -150 328,000 118,500 531,500

D00 Drilling modules 6 190 260 6 450 6 450 0 6 250 200 372,000 121,200 528,200

F00 Flare 240 0 240 235 5 250 -10 391,000 120,200 528,500

T00 Topside 23 678 612 24 290 24 240 50 24 600 -310 335,028 120,233 520,640


Area DescriptionNet.dry.

wgt.Allowance/

Contingency

Rep.dry

wgt.

Rep.dry

wgt. Rep. dev.

Rep.dry


C00 Deckbox 9 961 169 10 130 10 100 30 10 250 -120 332,000 119,500 508,500

L00 Living quarter 955 15 970 965 5 1 050 -80 277,000 120,400 535,500




F00 Flare 190 0 190 185 5 200 -10 391,000 120,200 528,500

T00 Topside 22 846 594 23 440 23 390 50 23 750 -310 335,706 120,228 520,372



wgt.Allowance/

Contingency

Rep.dry

wgt.

Rep.dry

wgt. Rep. dev.

Rep.dry


C00 Deckbox 9 715 165 9 880 9 850 30 10 000 -120 332,000 119,500 508,500

L00 Living quarter 906 14 920 915 5 1 000 -80 277,000 120,400 535,500




F00 Flare 190 0 190 185 5 200 -10 391,000 120,200 528,500

T00 Topside 22 114 576 22 690 22 640 50 23 000 -310 335,706 120,228 520,372



wgt.Allowance/

Contingency

Rep.dry

wgt.

Rep.dry

wgt. Rep. dev.

Rep.dry


C00 Deckbox 12 665 215 12 880 12 850 30 13 000 -120 332,000 119,500 508,500

L00 Living quarter 906 14 920 915 5 1 000 -80 277,000 120,400 535,500




F00 Flare 190 0 190 185 5 200 -10 391,000 120,200 528,500

T00 Topside 28 926 764 29 690 29 640 50 30 000 -310 336,790 120,190 520,307

THIS PERIOD BUDGETLAST PERIOD COORDINATES

THIS PERIOD LAST PERIOD BUDGET COORDINATES




5.1 Assumptions

“The assumptions for the report shall be split into two main sections, one for general assumptions and one

for discipline asssumptions.” ISO 19901-5: 2003

5.1.1 General assumptions

“The general assumptions shall include information concerning layout, construction philosophy, inclusions

at various project loading conditions, temporaries for various phases, residual fluid content, any bridges to

adjacent facilities etc.” ISO 19901-5: 2003

5.1.2 Discipline assumptions

“The discipline assumptions shall include information about the basis for discipline work, any

discrepancies according to general reporting instructions, any interdiscipline assumptions, any special

hook-up assumptions etc.” ISO 19901-5: 2003

Figure 15: Discipline Assumptions printout




Printout: DISCIPLINE ASSUMPTIONS Revision: 06F

Code Description Assumption

E Electrical

F Safety

H HVAC

I Instrument

L Architect

M Mechanical

O Marine

P Piping

R Surf.prot.

SA Primary str.

SB Sec. struct.

SC Outf. struc.

T Telecom

Piping lines MTO import from Engineering Database, Pipe support MTO from PDMS, MTO for insulation based on calculations

Cable ladders, Lighting, Transits and Cables imported from Engineering Database

Discipline MTO data based on drawing information imported from Engineering Database

MTO import from Engineering Database

Co-ordinates are transferred from the 3D model or entered manually by the disciplines if not modelled yet.

MTO import from Engineering Database

MTO based on input from structural and piping drawings.

Telecom imported from Engineering Database

Co-ordinates for MTO quantities are transferred from the 3D model.

Co-ordinates for estimated by the Structural discipline by utilising info from the 3D model.


5.2.1 Global origin

“The annex shall also show the location of global origin relative to axis and levels of the main structure.”

ISO 19901-5: 2003

Figure 16: Global Origin printout




Printout: GLOBAL ORIGIN & MAIN AREA CODES Revision: 06F


5.2.2 Area designations

“This report annex shall describe all project main areas/modules and sub-areas, including their location,

size, code and name.” ISO 19901-5: 2003

Figure 17: Area Designations printout




Printout: AREA DESIGNATIONS Revision: 06F


5.3 Weight allowance and contingency

“If weight allowances and contingencies are applied to the net weights, these shall be reported” ISO 19901-5:

2003

Figure 18: Weight Allowance and Contingency printout

5.4 Report codes

“All definitions, abbreviations and codes used in the report shall be fully explained.

The codes used may include, but not be limited to:

- weight installation codes

- weight phase codes

- weight status codes

- area codes” ISO 19901-5: 2003

5.4.1 Weight installation codes

Figure 19: Weight Installation Codes printout




Printout: WEIGHT ALLOWANCES AND CONTINGENCIES Revision: 06F

Disc. Code Disc. Name

B0 B1 B2 B3 B4 B5 E0 E1 E2 E3 E4 E5

E Electrical 0,0 10,0 5,0 3,0 2,0 0,0 0,0 10,0 7,0 4,0 2,0 0,0

F Safety 0,0 10,0 5,0 3,0 2,0 0,0 0,0 10,0 7,0 4,0 2,0 0,0

H HVAC 0,0 10,0 5,0 3,0 2,0 0,0 0,0 10,0 7,0 4,0 2,0 0,0

I Instrument 0,0 10,0 5,0 3,0 2,0 0,0 0,0 10,0 7,0 4,0 2,0 0,0

L Architect 0,0 10,0 5,0 3,0 2,0 0,0 0,0 10,0 7,0 4,0 2,0 0,0

M Mechanical 0,0 10,0 5,0 3,0 2,0 0,0 0,0 - - - - -

O Marine 0,0 10,0 5,0 3,0 2,0 0,0 0,0 10,0 7,0 4,0 2,0 0,0

P Piping 0,0 10,0 5,0 3,0 2,0 0,0 0,0 - - - - -

R Surf. prot. 0,0 10,0 5,0 3,0 2,0 0,0 0,0 - - - - -

SA Piping 0,0 10,0 5,0 3,0 2,0 0,0 0,0 - - - - -

SB Struct.primary 0,0 7,0 4,0 2,0 1,0 0,0 0,0 - - - - -

SC Struct.second. 0,0 10,0 5,0 3,0 2,0 0,0 0,0 - - - - -

T Struct.outfitting 0,0 10,0 5,0 3,0 2,0 0,0 0,0 10,0 7,0 4,0 2,0 0,0

X Multi disc. 0,0 10,0 5,0 3,0 2,0 0,0 0,0 - - - - -

EQUIPMENT (E) BULK (B)




Printout: INSTALLATION CODES Revision: 06F

Code

I

N

Description

Installed

Not installed


5.4.2 Weight phase codes

Figure 20: Weight Phase Codes printout

5.4.3 Weight status codes

Figure 21: Weight Status Codes printout

5.4.4 Area codes

Figure 22: Area Codes printout




Printout: STATUS CODES Revision: 06F

Code

LC50

LC60

LC70

LC90

Description

Transport to offshore field

Lift at offshore field

Offshore dry installed

Future operating installed (max load)





Code

B0

B1

B2

B3

B4

B5

E0

E1

E2

E3

E4

E5

Weight data as supplied by vendor.

Confirmed weight data from vendor based on fabrication drawings and catalogue data for standard equipment.

Weighed weights.

Weight take-off from drawings approved for construction and as-built.

Weighed weights.

Estimate based upon historical data from other projects.

Estimate based upon concept specific preliminary process data.

Estimate based upon information from equipment data sheets.

Weight take-off from drawings and 3D-models issued in the Project execution period after inter discipline check (IDC).

Description

Estimate based upon historical data from other projects.

Weight take-off from drawings and 3D-models issued in Front end engineering design (FEED).

Weight take-off from drawings and 3D-models issued in the Project execution





Code

C00

L00

U00

P00

D00

F00

T00

Flare

Topside

Description

Deckbox

Living quarter

Utility modules

Process modules

Drilling modules


Automatic generated weight reports

Background

A lot of the time consume during production of weight reports are related to copying and pasting data from

the weight control system into a spreadsheet to format tables and printout and further into the final word

processor document. A better workflow would be to if the final report document could be produced directly

from the weight control system. This would make it possible to increase the time spent on investigating the

status and reasons for changes, instead of manual editing of spreadsheets and word processing documents. I

would also significantly reduce the chances of getting errors prone to missing updates between the various

sources and formula errors in the spreadsheets.

Requirements

Automatic generated weight reports can only be possible if all necessary information is present in the

weight database. One of the goals of this paper was to get an overview of how much of the information of

weight reports that can be presented as printouts / tables from the system and how much must be produced

manually.

Until now we have not found any information that cannot be systemized and stored in the weight database.

On the contrary, systemizing all information of a weight report would be of great benefit because that

makes it possible to quickly search up all related information from previous projects.

But there is no doubt that it would be significant amount of work to define all the queries and formats that’s

necessary to produce weight reports with proper layout. It is therefore of vital importance that the content

and layout of the weight report are standardized.

Conclusion

There is good correlation between the ISO standard for weight control, ISO 19901-5, and the Statoil weight

control requirement, TR2352, when it comes to weight reporting. The Statoil requirement document focus

on which data fields should be included in the database, while the ISO standard is specific when it comes to

what information should be included in the various sessions of a weight report. While most reviewed past

weight reports includes all the information required by the ISO standard, the order of this information is

presented in the reports, and the formatting of printouts and tables are varying a lot. It should be considered

to extend the ISO standard 19901-5 with an appendix specifying contents and formats for printouts and

tables due to the requirements specified in chapter 6.3 of the standard.

A report format specification would also make it possible to automatic generate weight reports from the

weight control system. But without this standard specification, it will probably be too much work

implementing different format templates customized to the oil companies different requirements and

practice.


Terms and definitions

CoG: Center of gravity

ENS: Engineering Numbering System

GUID: Globally Unique Identifier

Net weight: Weight without any allowance or contingency factor applied

Gross weight: Net weight including allowance/contingency factor

NS: Norwegian Standard


Appendix 1: Examples of Main Summary tables from various Weight

Reports.

Example 1: Jacket topside


Example 2: FPSO topside

Example 3: Jacket topside


Example 4: Semi-submersible total platform


Example 5: FPSO topside and vessel


Appendix 2: Example of chapter mapping between ISO standard

chapters and weight reports from past projects

6.3.1 1 Introduction

6.3.1a 1.1 Major assemblies 1 1 1.2 1 1

6.3.1b 1.2 Cut-off date 1 1 1.2 1 1

6.3.1c 1.3 Weight information provided by others 1 1 1.1 Missing 1

6.3.1d 1.4 List of reported loading conditions 1 1 1.1 1 5.6

6.3.1e 1.5 Discrepancies 1 1 1.1 1 1

6.3.2 2 Summary and conclusions to the report

6.3.2.1 2.1 Main summary 2 2.2.3 2.3.1-4+2.4 2.1 3.1

6.3.2.2 2.2 Weight and load budget (WLB) 5 2.2 2.3.1-4+2.4 3 Missing

6.3.2.3 2.3 Global CoG plot 9 7.8-7.9 Missing 6.5 4.2.3

6.3.2.4 2.4 Main variations from the previous report 10 2.3 2.3.1-4+2.4 3 2.2

6.3.2.5 2.5 Weight forecast 4

6.3.2.5.1 2.5.1 General 7 8.6 3.1 5.2 2.2

6.3.2.5.1a 2.5.1.1 Approved design changes not included NA NA NA 5.2 2.2

6.3.2.5.1b 2.5.1.2 Proposed design changes NA NA NA 5.2 2.2

6.3.2.5.1c 2.5.1.3 Possible weight changes NA NA NA 5.2 2.2

6.3.2.5.2 2.5.2 Main-trend graphs 8 8.7 6.6 8.18.2 4.1.1

6.3.2.6 2.6 Main weight printout summaries by area and discipline 2.1 9.2 4.2 7.2 3.1

6.3.2.7 2.7 As built / weighing data 7.1 Missing 4.1.1 7.1.1+10.2 Missing

6.3.3 3 Area / module reports

6.3.3.1 3.1 Variation from last report by area and discipline Missing 8.2 6.5 7.3 Missing

6.3.3.2 3.2 Trend graphs by area 8 7.7 6.6 Missing 4.1.1

6.3.3.3 3.3 CoG plots 9.2+9.3 7.8-7.9 Missing Missing 4.2.1-3

6.3.3.4 3.4 Area weight printouts 5 6.1 7.3+8.3 9.1-9.6 NA

6.3.4 4 Special reports (optinal)

6.3.4.1 4.1 System reports Missing Missing Missing Missing Missing

6.3.4.2 4.2 Sub-area report or sub-assemblies report A.1 6.1 Missing NA

6.3.4.3 4.3 Secondary lift report A.2-A.8 7 5.4 NA

6.3.5 5 Annexes to the report

6.3.5.1 5.1 Assumptions

6.3.5.1a 5.1.1 General assumptions 4.1 1.2 3.1

6.3.5.1b 5.1.2 Discipline assumptions 4.1 3.1 3.2

6.3.5.2 5.2 Area designations and global origin A.10 A-C Missing 10.4 5.3

6.3.5.3 5.3 Weight allowance and contingency 4.1 A-A 6.4-

6.3.5.4 5.4 Report codes

6.3.5.4a 5.4.1 Weight installation codes Missing Missing Missing 5.7-8

6.3.5.4b 5.4.2 Weight phase codes Missing 1.1 1.1 5.6

6.3.5.4c 5.4.3 Weight status codes 11 A-A Missing 10.1 5.5

6.3.5.4d 5.4.4 Area codes A.10 A-C Missing 5.4

6.3.5.5 5.5 References 4.1 1.3 1.3 2.1

6.3.5.6 5.6 Other descriptions (incl. VO) 6.2 10 Missing 3.3

Semi-

submersible

Module/

modificationISO ch. Chapter Description Jacket Topside Jacket Topside Jacket Topside

SAWE Paper Offshore Wgtrep 120507

Documents

net weight

gross weight

weight control requirements

sawe paper

annual conference of

table of figures

ear report format

identification key