1 Pipelines

COMPANYINAgipd.o.oJOBRevisions

COUNTRYCROATIA00

AREAOOF SHORE CROATIADoc. n.380100CJPT55404

PLANTPLATFORMS AND SEALINES

RADIOGRAPHIC TESTING PROCEDURE FORPIPELINESSheet / of20 19CompiledN.S.Date

OFF-SHORE INSTALLATION CAMPAIGN 2008PLATFORMS AND SEALINES

RADIOGRAPHIC TESTING PROCEDURE FORPIPELINES380100CJPT55404

0.0PIssued for Comments / Review

Rev.StatusDescriptionPreparedCheckedApprovedDate


COUNTRYCROATIA00




INDEXINDEX ... 2AMENDMENTS AND REVISIONS . 41. PROJECT OVERVIEW .. 52. PROJECT DEFINITIONS .. 52.1 CONTRACTUAL DEFINITI 52.2 ABBREVIATIONS . 53. REFERENCE RULES, CODES AND STANDARDS .. 63.1 CODES AND STANDARDS 64. SCOPE OF DOCUMENT 75. PERSONNEL 86. RADIOGRAPHIC TESTING PROCEDURE 86.1 RADIOGRAPHIC PROCEDURE QUALIFICATION 86.2 RADIATION SOURCE . 86.3 EQUIPMENT 86.3.1 Internal Exposure (SWSI technique) .. 86.3.2 External Exposure (DWSI and DWDI technique) 86.4 TECHNIQUES 96.4.1 Single Wall Single Image (SWSI) .. 96.4.2 Double Wall Single Image (DWSI) .. 9 6.4.3 Double Wall Double Image (DWDI) . 106.5 FILM TYPE 11 6.6 INTENSIFYING SCREENS 11 6.7 IMAGE QUALITY INDICATOR . 116.7.1 IQIs Type .. 11 6.7.2 Sensitivity: SWSI Technique 12 6.7.3 Sensitivity: SWSI technique 12 6.7.4 Sensitivity: SWSI technique 136.8 IQI PLACEMENT .. 13COMPANYINAgipd.o.oJOBRevisions

COUNTRYCROATIA00




6.8.1 SWSI Technique .. 136.8.2 DWSI 136.8.3 DWDI .. 136.9 FILM COVERAGE . 136.10 EXPOSURE CONDITIONS . 146.11 FILM PROCESSING .. 146.12 DENSITY . 146.13 IDENTIFICATION OF RADIOGRAPHS 146.14 ACCEPTANCE CRITERIA ........................... 157. RADIOGRAPHIC REPORTS 15ATTACHMENT 1 ACCEPTANCE CRITERIA . 16ATTACMENT 2 RT REPORTS . 18


COUNTRYCROATIA00




AMENDMENTS AND REVISIONS

Amendmentand revisionDatePageDescriptionProject Manager

00Issued for comments/reviewD.Frisinghelli


COUNTRYCROATIA00




1. PROJECT OVERVIEWSAIPEM S.p.A. has been awarded Offshore Installation Campaign 2008 Project comprising the following main activities: Annamaria A Jacket installation N0 03 Sealines (Ana to Ivana B; Vesna to Ana; Irina to Ida A) installation N0 06 Tie-in (18 Spools), N0 3+1 Risers installation Pre-commissioning of the Sealines2. PROJECT DEFINITIONS2.1 CONTRACTUAL DEFINITIONS

The following terms abbreviation have been included for clarification of the CONTRACT definitions and interpretations given in the CONTRACT:

COMPANYINAgipd.o.o.

CONTRACTORSAIPEM S.p.A.All organisations selected and awarded by CONTRACTOR to

SUBCONTRACTOR1. supply a certain Project materials or equipment or 2. whom a part of the WORK has been subcontracted

CERTIFYING AUTHORITYThe authority entrusted by COMPANY for the certification fit for purpose of the WORK.

MAIN CONTRACTContract awarded to CONTRACTOR

PROJECTOFFSHORE INSTALLATION COMPAIGN 2008

2.2 ABBREVIATIONS

DWSIDouble Wall Single Image

DWDIDouble Wall Double Image

FSFilm Side


COUNTRYCROATIA00




IQIImage Quality Indicator

IDInternal Diameter

NDTNon Destructive Tests

ODOutside Diameter

RTRadiographic Testing

SOWScope of Work

SSSource Side

SWSISingle Wall Single Image

WPQWelding Procedure Qualification

WTWall Thickness

3. REFERENCE RULES, CODES AND STANDARDS3.1 CODES AND STANDARDSRefDocument NumberTitle

/1/ISO 13847Petroleum and gas industries Pipeline transportation systems Welding of pipelines

/2/ISO 17636Non-destructive testing of welds Radiographic testing of fusion welded joints

/3/ISO 9712Non-destructive testing Qualification and certification of Personnel

/4/EN 462-1Non-destructive testing. Image quality indicators (wire type). Determination of image quality value.

/5/EN 473Qualification and certification of NDT personnel.


COUNTRYCROATIA00




4. SCOPE OF DOCUMENT

This procedure will be applied for the Inagip OFFSHORE INSTALLATION CAMPAIGN 2008 Project, during the following phases: Welding Procedure Qualification (WPQ); Offshore Production activities: inspection of sealines, spools and tie-ins girth welds.Project SOW is summarized in following tables:Ana-Vesnasealine Installation

ItemDiameterWTMaterial

Sealine1012,7mmL415 SMLS

Spool1012,7/14,3mmL415 SMLS





Ana-IvanaB sealine Installation








Irina-Ida Asealine Installation









COUNTRYCROATIA00




5. PERSONNEL

Radiographs will be evaluated by technicians qualified and certified as Level II for radiographic method in accordance with ISO 9712/EN 473 or equivalent and Saipem Work Instruction WI-SPA-Weld-001-E.

6. RADIOGRAPHIC TESTING PROCEDURE6.1 RADIOGRAPHIC PROCEDURE QUALIFICATIONThe radiographic procedure to be applied shall be qualified: For SWSI technique, using Both film side and source side IQIs will be used in order to carry out a comparison of radiographic sensitivities; For DWSI and SWSI using Film side IQIs.For RT Procedure Qualification, 2 radiographs shall be taken.A report similar to the one included in Attachment 2 shall be fulfilled.

6.2 RADIATION SOURCE

X-ray and Gamma-ray (Iridium 192).

6.3 EQUIPMENT

6.3.1 Internal Exposure (SWSI technique)

ProductionBattery powered x-ray crawler fitted with panoramic tube 180 KV/3mA head (air cooled), or equivalent.

WPQPanoramic X-Ray tube 300 KV-5mA (air cooled, focal spot size 5 x 0.5 mm) with separate High voltage generator an control unit or equivalent.

6.3.2 External Exposure (DWSI and DWDI technique)

ProductionDirection X-Ray tube 300 KV.Gamma-Ray apparatus with remote control using Ir-192.


COUNTRYCROATIA00




WPQPanoramic X-Ray Tube 300 KV-5mA (air cooled, focal spot size 5 x 0,5 mm) with separate High voltage generator an control unit or equivalent.

6.4 TECHNIQUES

6.4.1 Single Wall Single Image (SWSI)

Panoramic shot with radiation source at the axis of the pipe, single wall exposure, single wall viewing (Figure 1).

Figure 1 Sketch of SWSI Technique.

6.4.2 Double Wall Single Image (DWSI)

Sketch of DWSI Technique is shown in Figure 2 and Figure 3.It shall be used when the access of the radiation source in the pipe is not permitted.DWSI technique using X-Ray sources will be used: On 6 and 10 OD welds, when SWSI can not be applied (for example tie-in welds).DWSI technique using Gamma-Ray sources will be used: During Offshore Production phase on 2 and 3 OD welds.


COUNTRYCROATIA00




Figure 2 Sketch of DWSI Technique using X-Ray source.

Figure 3Sketch of DWSI Technique using Gamma-Ray source.

6.4.3 Double Wall Double Image (DWDI)Sketch of DWDI Technique is shown in Figure 4.This technique will be used during Welding Procedure Qualification (WPQ) for 2 and 3 OD welds.


COUNTRYCROATIA00




Source

Figure 3 Sketch of DW/DI Technique

6.5 FILM TYPE

During WPQ : AGFA D7 (or equivalent) when SWSI and DWSI technique are applied; AGFA D5 (or equivalent) when DWDI technique is applied.

During production: AGFA F6 (or equivalent) when SWSI technique are applied; AGFA D7 (or equivalent) when DWSI technique with X-ray sources is applied; AGFA D5 (or equivalent) when DWSI technique with Gamma-ray Sources is applied.

6.6 INTENSIFYING SCREENS

Front and back lead screens with a thickness between 0,02mm and 0,2mm will be used for AGFA D7 and D5.Fluorometallic screens for AGFA F6.

6.7 IMAGE QUALITY INDICATOR

6.7.1 IQIs Type

Wire type IQIs, in accordance with EN 462-1 will be used. IQI wire sizes and wire numbers are reported in table 1.


COUNTRYCROATIA00




7. Wire Diameter (mm)IQI EN 462 W6 FEIQI EN 462 W10 FeIQI Number

1.00XW6

0.80XW7

0.63XW8

0.50XW9

0.40XXW10

0.32XXW11

0.25XXW12

0.20XW13

0.16XW14

0.125XW15

0.100XW16

Table 1 IQI Wire sizes and numbers in accordance to EN 462-16.7.2 Sensitivity: SWSI Technique

Sensitivity related to IQI placed on source side will be in accordance with ISO 17636 and table 6 of ISO 13847 (reported in Table 2 below). During RT procedure qualification the wire to be seen when the IQI is placed on film side will be evaluated.

Pipe WallThickness(mm)SS WireSize (mm)SS WireNumber

Fromto

Documents

1 Pipelines