Exploration & Production
GENERAL SPECIFICATION PIPELINES - RISERS GS EP PLR 106
Desi Design gn o f on shor sh ore e pipeli nes as per ISO 1362 13623 3
Addition of DNV-RP-J202 for CO CO2 pipelines - removal of SSIV locations
03
01/2011
02
10/2009
Updated to revised ISO 13623: 2009
01
10/2005
Addition of “EP” root to GS identification, safety matters
00
10/2003
First issue
Rev.
Date
Owner: EP/TDO/TEC
Notes
Managing entity: EP/TDO/TEC/PLR
This document is the property of Total. It must not be stored, reproduced reproduced or di sclosed to others without wri tten authorisation from the Company.
Exploration & Productio Productio n General Specification
Date: 01/2011
GS EP PLR 106
Rev: 03
Contents 1. Scope ....................................................................................................................... ....................................................................................................................... 3 2. Reference Reference docu ments ............................................................................................. ............................................................................................. 3 3. Am endmen end men t s t o t he ISO 13623 - f or on sh or e pi pel in e sec ti on s .......................... 4 3.1
General .............................................................................................................................. . .............................................................................................................................4 4
3.2
Amendments to § 3.1.12 3.1.12 - MAOP ...................................................................................... .....................................................................................4 4
3.3
Amendments to § 3.1.23 3.1.23 - SMYS . ..................................................................................... .....................................................................................5 5
3.4
Amendments to § 5.1 - System definition . ......................................................................... .........................................................................5 5
3.5
Amendments to § 5.3 - Hydraulic analysis analysis ........................................................................ ........................................................................5 5
3.6
Amendments to § 5.4 - Overpressure. ............................................................................... ...............................................................................5 5
3.7
Amendments Amendments to § 6.1 - Design principles . ......................................................................... .........................................................................5 5
3.8
Amendments to § 6.3.2.2 6.3.2.2 - Temperature . .......................................................................... ..........................................................................5 5
3.9
Amendments to § 6.4.2.2 6.4.2.2 - Yielding. .................................................................................. ..................................................................................5 5
3.10
Amendments to § 6.4.2.4 6.4.2.4 - Fatigue . .................................................................................. ..................................................................................5 5
3.11
Amendments Amendments to § 6.4.2.5 - Ovality .................................................................................... . ...................................................................................5 5
3.12
Amendments to § 6.6 - Pipeline Spanning Spanning . ....................................................................... .......................................................................6 6
3.13
Amendments to § 6.7.3 6.7.3 and to § 11 - Testing Testing. ................................................................... ...................................................................6 6
3.14
Amendments to § 6.8.2.1 6.8.2.1 - Pipeline on land . ..................................................................... .....................................................................6 6
3.15
Amendments to § 6.9 - Crossings . .................................................................................... ....................................................................................6 6
3.16
Amendments to § 6.9.6 6.9.6 - Pipe bridge crossings . ............................................................... ...............................................................6 6
3.17
Amendments to § 6.9.7 6.9.7 - Sleeved crossings crossings . .................................................................... ....................................................................6 6
3.18
Amendments to § 6.11 6.11 - Section isolation isolation valves . ............................................................. .............................................................6 6
3.19
Amendments to § 6.14 6.14 - Fabricated Components Components . ............................................................ ............................................................6 6
3.20
Amendments to § 13.4.6 13.4.6 - Testing of modified modified pipelines pipelines . .................................................. ..................................................6 6
3.21
Amendments to Annex Annex B ................................................................................................... ..................................................................................................7 7
4. Other references ..................................................................................................... ..................................................................................................... 7
This document is the property of Total. It must not be stored, reproduced reproduced or di sclosed to others without wri tten authorisation from the Company.
Page 2/7
Exploration & Productio Productio n General Specification
Date: 01/2011
GS EP PLR 106
Rev: 03
1. Scope This General Specification is supplementing the GS EP PLR 104 104 when the ISO 13623 13623 is the selected Prime Reference for the design of an onshore pipeline system. Any contradictions between the GS EP PLR 104 and 104 and the ISO 13623 that have not been treated in the present General Specification shall be treated at the commencement of the design and the resolutions shall be approved by Company.
2. Reference Reference docu ments The reference documents listed below form an integral part of this General Specification. Specification. Unless otherwise stipulated, the applicable version of these documents, including relevant appendices and supplements, is the latest revision published at the EFFECTIVE DATE of the CONTRACT. Standards Reference ISO 13623
Title Petroleum and natural gas industries - Pipeline transportation systems
Professional Documents Reference DNV-RP-J202
Title Design and Operation of CO 2 Pipeline
Regulations Reference
Title
Not applicable
Codes Reference
Title
Not applicable
Other documents Reference
Title
Not applicable
This document is the property of Total. It must not be stored, reproduced reproduced or di sclosed to others without wri tten authorisation from the Company.
Page 3/7
Exploration & Productio Productio n General Specification
Date: 01/2011
GS EP PLR 106
Rev: 03
Total General General Specification s Reference
Title
GS EP PLR 100
Submarine pipeline systems
GS EP PLR 104
Onshore pipeline systems
GS EP PLR 403
Installation of onshore pipelines
GS EP PLR 420
Site welding of carbon steel pipelines to API 1104 (sweet service)
GS EP PLR 421
Site welding of carbon steel pipelines to API 1104 (mild, intermediate and severe sour service)
GS EP PLR 501
Hydrostatic testing of pipelines
3. Amendments t o the ISO ISO 1362 13623 3 - for ons hor e pipelin e secti secti ons 3.1 General Where conveyed fluids are overwhelmingly CO 2, recommended practice DNV-RP-J202 DNV-RP-J202 shall shall be applied and used in conjunction with the APR.
3.2 Amend ments ment s to § 3.1. 3.1.12 12 - MAOP MAOP The GS EP PLR 104 specifies 104 specifies a set of pressure levels that shall be matched together with those reflected in the Applicable Prime Reference, being the ISO 13623 in the frame of the present General Specification. Specification. The ISO 13623 indicates 13623 indicates that the Incidental Pressure can exceed the MAOP by less than 10% but does not precise whether the Incidental Pressure can exceed the Design Pressure. The present General Specification understands that the Incidental Pressure as per the ISO 13623 matches the Abnormal Pressure as specified in the GS EP PLR 104. 104 . As a consequence, consequence, the Design Pressure as per the ISO 13623 13623 matches that of the GS EP PLR 104 104 but as soon as the Abnormal/Incidental Pressure exceeds the Design Pressure, then an overpressure protection system shall be engineered. The meaning of the MAOP as per the GS EP PLR 104 differs 104 differs from that of the ISO 13623 in 13623 in the sense that it is associated to a post-design check, based on the set wall thickness rather than on the theoretical one, by using the reverse hoop stress formulation f ormulation,, as expressed hereunder: hereunder:
MAOP = p id
=
p od
+
2.t set .Fh .σ y
Do
−
t set
where: tset is the selected wall thickness (i.e. API) less the fabrication tolerance and the corrosion allowance.
On doing this, it sh all be checked that checked that the set MAOP: •
Shall not generate an unacceptable unacceptable loading loading in any required combination combination with the other other loads
•
Shall always remain below the Incidental/Abnormal Incidental/ Abnormal Pressure
•
Once the MAOP is specified, specified, then this shall be the reference pressure pressure to derive the hydrotest and leak test pressures.
This document is the property of Total. It must not be stored, reproduced reproduced or di sclosed to others without wri tten authorisation from the Company.
Page 4/7
Exploration & Productio Productio n General Specification
Date: 01/2011
GS EP PLR 106
Rev: 03
3.3 Amend ments ment s to § 3.1.2 3.1.23 3 - SMYS SMYS The SMYS ( σy) addressed by the ISO 13623 is 13623 is the transverse value. In some circumstances - such as for reeled pipe and for pipelaying stress analysis - the longitudinal one may be required. De-rating for f or wall thicknesses t hicknesses above a bove 31.8 mm (1"1/4) and temperatures temperat ures above 50°C is mandatory and information shall be provided in a first approach by the selected pipe suppliers.
3.4 3.4 Amendments t o § 5.1 5.1 - System definiti on Battery limits shall be defined as GS EP PLR 104.
3.5 3.5 Amendments t o § 5.3 5.3 - Hydrauli Hydrauli c analysi analysi s On performing the hydraulic analysis, care shall be taken neither to vaporise liquids at highest points of the route nor to exceed receiving pressure capabilities at the host arrival point.
3.6 3.6 Amendments t o § 5.4 5.4 - Overpressur Overpressur e When assessing the effects from an over pressure, the incidental/accidental pressure shall be determined further to a process study combined with an hydraulic analysis, and in compliance with the above section 3.1. 3.1. In a first approach, an overpressure equal to 1.1 times the design pressure can be retained refer also to § 6.3.2.2 of the ISO 13623. 13623.
3.7 3.7 Amendments to § 6.1 6.1 - Design Design pr inci ples Reliability-based limit state design is at present time not permitted by Company for onshore pipelines and risers designed under the ISO 13623. 13623.
3.8 Amend ments ment s to § 6.3.2.2 6.3.2.2 - Temperatur e The minimum temperature reached further to an anticipated blowdown shall be calculated. The method (thermodynamic equations and software) used for this calculation and the calculation itself shall be approved by Company. In some circumstances, a supplementary supplementary temperature margin may be required by Company.
3.9 Amend ments ment s to § 6.4.2. 6.4.2.2 2 - Yieldi ng Longitudinal straining is limited to 2%. Consequences on material characteristics are to be determined and presented to Company for acceptance, but this does not address straining induced during reeling operation.
3.10 3.10 Amendment Am endment s to § 6.4.2. 6.4.2.4 4 - Fatigu e Selected fatigue curves shall be approved by Company.
3.11 3.11 Amendment Am endment s to § 6.4.2. 6.4.2.5 5 - Ovalit y Pipes geometrical characteristics retained for calculations shall be as per the relevant Total General Specifications related to linepipe fabrication.
This document is the property of Total. It must not be stored, reproduced reproduced or di sclosed to others without wri tten authorisation from the Company.
Page 5/7
Exploration & Productio Productio n General Specification
Date: 01/2011
GS EP PLR 106
Rev: 03
3.12 3.12 Amendment s to § 6.6 6.6 - Pipelin Pipelin e Spanning Spanning Any submerged submerged pipeline spanning spanning shall shall be evaluated as as per GS EP PLR 100. 100.
3.13 3.13 Amendment Am endment s to § 6.7. 6.7.3 3 and to § 11 11 - Testi Testi ng The pressure level shall be equal to the strength test pressure, which shall also be read in the light of above section 3.1 (see 3.1 (see also further section 3.20). 3.20). The duration of the pressure tests shall not be less than 24 h.
3.14 3.14 Amendment Am endment s to § 6.8.2. 6.8.2.1 1 - Pipeli ne on land Pipeline depth of burial shall be as GS EP PLR 403. 403 .
3.15 3.15 Amendments t o § 6.9 6.9 - Crossi ngs Land crossings arrangements arrangements shall be as per GS EP PLR 403. 403 .
3.16 3.16 Amendment s to § 6.9. 6.9.6 6 - Pipe bridge cross ings Location classes for bridge crossings shall be defined by the most constraining density of population of adjacent areas.
3.17 3.17 Amendments t o § 6.9 6.9.7 .7 - Sleeve Sleeved d cros sing s Sleeved crossings shall be approved by Company Corrosion specialist.
3.18 3.18 Amendments t o § 6.11 6.11 - Secti Secti on iso lation valv es In addition to the ISO 13623 requirements, and in the absence of Local Regulations, sectionalising sectionalising valves onshore shall be located: •
Every 48 km on on location class 1
•
Every 32 km on on location class 2
•
Every 16 km on on location class 3
•
Every 8 km on location class 4 and 5. 5.
However, requirements for such valves and for their spacing may be challenged by appropriated appropriated studies (risk analysis, operability, performances, performances, safety, security, overall reliability, etc.).
3.19 3.19 Amendment s to § 6.1 6.14 4 - Fabri Fabri cated Compo Compo nents Welded branch connections and any other pipeline items shall have a life duration at least equal to the design life duration of the pipeline. Welding shall be performed as per GS EP PLR 420 or GS EP PLR 421, 421, as applicable. applicable.
3.20 3.20 Amendment s to § 13.4 13.4.6 .6 - Testi Testi ng of mo dif ied pipelin es When leak tests are required, leak tests of 8 hours at 1.1xMAOP have to be considered.
This document is the property of Total. It must not be stored, reproduced reproduced or di sclosed to others without wri tten authorisation from the Company.
Page 6/7
Exploration & Productio Productio n General Specification GS EP PLR 106
Date: 01/2011 Rev: 03
3.21 3.21 Amendments to Annex B The location class of pipelines arriving within a permanently staffed and fenced facility shall adopt: •
The location class 3, by by default default
•
Or the class 4 or 5 if the adjacent adjacent areas are in class 4 or 5.
For host facilities at the battery limits the location class shall be given by the host.
4. Other references Following Total General Specification is applicable: applicable: GS EP PLR 501. 501 .
This document is the property of Total. It must not be stored, reproduced reproduced or di sclosed to others without wri tten authorisation from the Company.
Page 7/7
