1. Vendor visit: BÖHMER GmbH
Country of Origin: Germany
Visitation Date: 6th Oct- 8th Oct
Generated on 10th Oct
Year: 2014
By Gowri Sankar
Doc No. Info-PPT-001 Rev.0
Total Pages include this page : 27 pages
2. 1. General Information
2. Scope Of Work
3. Applicable Codes & Standards
4. Documents Review
5. Test Criteria
6. Product Testing
A. Hydrostatic Test
B. Function Test
C. Pneumatic Test
D. Drift Test
7. Test Pictures & Descriptions
8. API 6DSS Checklist - Information
9. Corrosion Prevention - External
10. Packing & Shipping
11. Any Questions?
3. To follow (indefinitely) contractual agreement to derive (use)
product (i.e. valve) for G11/48 Nong Yao Development Project as
per the following specification.
As per the guidelines/requirements defined in the specification
Subsea Valve & Doc No. NY-PPL-X-WPTL-PL-SP-0017 Rev. B.
Specification has defined that the product (valve) is to be Designed,
Manufactured, Tested to ISO 14723/API 6DSS.
Contractor responsibility (NSENGI) to ensure & select the product
(valve) is capable of performing its intended service by ensuring
Only Quality Product is being considered & selected.
Witnessing & contractor (NSENGI) presence during product test
prior to delivery is Important & Compulsory.
4. API (American Petroleum Institute) 6DSS was first developed in June
2007 (which nationally adopted ISO 14723) & primarily based on
ISO 14313 – Petroleum & Natural Gas Industries – Pipeline
Transportation.
API 6DSS is specifically developed to address special requirements
for subsea pipelines valves.
International standard prepared by Technical Committee ISO/TC
67: Materials, Equipments & Offshore Structures for petroleum &
natural gas industries. Sub-committee SC 2, Pipeline
Transportation System
Specify requirements & provide recommendations for the design,
manufacturing, testing and documentation of Ball Valve, Check
Valve, Plug & Gate Valve relating to subsea pipelines.
5. 6” DN150 Class 300 –
Subsea Valve
6” DN150 Class 300 –
Subsea Valve
6. To understand on Types of Valves & valve function
6” DN150 Pressure: Class 300 – Ball Valve Type
2” DN150 Pressure: Class 300 – Ball Valve Type
To understand Industrial Standards & Guidelines
API 6DSS (ISO 14723) Requirements
To understand Client Specification & Requirements (Nong Yao Project)
NY-PPL-X-WPTL-PL-SP-0017 Rev.B – Subsea Valve specification.
To Review of Vendor Supplied Documents & Acceptance – Prior to visit
Documents i.e. Material Specification, Qualification of Inspection & Test Personnel
etc. (Further Info. in Section 4; Document Review)
To Witness Product Test – At vendor site (if avail. or 3rd Party Test Lab)
Hydrostatic Test
Function Test
Pneumatic Test
Drift Test
(Further info in Section 6; Product Test)
7. Specifications Titles
API 6D Specification for Pipelines Valves
API 6A Specification for Wellhead & Christmas Tree
Equipment
API 17D Specification for Subsea Wellhead & Christmas Tree
Equipment
API 598D Valve Inspection & Testing
ANST – TC- 1A Personnel Qualification & Certification in Non
Destructive Testing
ASTM A370 Standard Test Methods & Definitions for
Mechanical Testing of Steel Products
API 6DSS (ISO
14723)
Petroleum & natural gas industries – Pipeline
Transportation systems – Pipeline Valves
BS EN 10204:
2004
Metallic Products – Type of inspection documents
8. •Pressure Gauge or
Pressure Transducers
•Calibrated
Periodically
•Qualified to ISO
15607, ISO 15609
etc.
•Welding Operators
to ISO 9606 etc.
•Qualified as per ISO
9712 requirements
•Qualified Welders &
Operators to AWS
QC1
•Mill Certificates
•Pressure Control
Parts Specifications
i.e. Manufacturer
Specifications
A) Material
Specification
(ISO 10474.3.1B
& ISO 14723
Req.)
B) Qualification
Of Inspection &
Test Personnel
(ISO 14723
Req.)
C) Pressure
Monitoring
Device (ISO
14723 Req.)
D) Welding (ISO
14723 Req.)
E) NDE (ISO
14723 Req.)
9. •To comply with ISO 10474-3.1B
•Require review by Client Inspector
Mill Certificates
•Chemical Analysis
•Carbon Equiv.
•Heat Treatment
•Mechanical Properties
Manufacturer Specifications Requirements
•C = 1.21%
•S = 0.020% - max
•P = 10120% max
•CE = 0.41%
Chemical Composition API 6DSS (ISO 14723)
•Specified Min. Yield Strength <277 277 to 299 300 to 321 >321
•Avg. of 3 Specimens 28 30 32 37
•Min. Of single Specimens 21 23 25 28
Charpy V – Notch (ASTM A370 or ISO 148-1)
10. •Ref. to API 6DSS (ISO 14723) procedures.
•NDE Personnel require to be qualified to ISO 9712 or
ASNT-TC-1A.
•Welding Inspectors qualified to AWS QC1 or equivalent.
Personnel Qualifications
11. • Ref. to API 6DSS (ISO 14723)
procedures.
• Pressure Gauges or pressure
transducers. Accuracy ±2.0%
• Periodically recalibrate with
master pressure measuring device
or Dead Weight Tester at 25%,
50% & 75% of Full pressure scale
Test Pressure
Measuring Device
12. • Applicable to welding, weld overlays & repairs
on pressure-containing and pressure
controlling parts of the valve
• Procedures Qualified to ISO 15607, ISO 15609,
ISO 15614-1 or ASME SEC IX 9.2 & 9.3
Procedure Qualifications
• Personnel Qualified to ISO 9606. ASME SEC IX
or EN 287
Welders & Welding Operators
13. • Non Destructive Examination requirement &
acceptance criteria shall be selected from the list
in accordance with ISO 14723 Annex A.
• Purchaser shall specify the type of NDE
requirement based on service fluid, size, pressure
and temperature
• If there is any defect during welding , after defect
removal the excavated area shall be examined by
Magnetic particle testing or penetrant testing .
Requirements & Acceptance criteria
14. •Guidelines & Acceptance criteria to conform
during Product Testing as required in F.A.T
included in Client specification (NY-PPL-X-
WPTL-PL-SP-0017 Rev.B Attach. 2)
Factory Acceptance Testing (FAT)
•Further test guidelines & requirements to
conform on i.e. API 6DSS (ISO 14723, i.e. Pg
50)
•Pressure Class to be defined by purchaser
either using PN Class or ANSI Class
API 6DSS (ISO 14723)
15. •Low Pressure Seat
Test (ITP Req. 6 Bar)
•Pressurized medium
used is air
•Various Op. Position
•To test &
demonstrate on the
valve capability to
proof 98% of nominal
matching pipe
•To test function of
the valve at max.
operating pressure.
•Pressurized Test
fluids i.e. water.
•Various Op. Pos.
•To test leakage on
shell by pressurized
medium (test fluid) i.e.
water.
• Duration & Hydro.
Pressure applied
•Various Op.
Position.
A)
Hydrostatic
Shell
Testing
B)
Operational
Function
Test
C)
Pneumatic
Seat Test
D)
Drift Test
16. Valve end operating position during testing
will be according to the test plan approved by
COMPANY
Test pressure should be more than 1.5 times
in stage 1 and from stage 2 to 4 will be more
than 1.1 times.
Time of test duration and acceptance criteria
will be based on ISO 14723
17. N-Left
Side (bar)
Cavity
(bar)
P-Right
Side
(bar)
Medium
Time
(min)
Operating
Positions
Acceptance
Criteria/
Requirements
**NOTE A
1.5 X MPD 77.0 77.0 Water 30
F.A.T &
API 6DSS (ISO
14723)
**NOTE B
1.1 X MPD 0.0 0.0 Water 5
F.A.T &
API 6DSS (ISO
14723)
0.0 0.0
**NOTE B
1.1 X
MPD
Water 5
F.A.T &
API 6DSS (ISO
14723)
**NOTE B
1.1 X MPD 0.0
**NOTE B
1.1 X
MPD
Water 5
F.A.T &
API 6DSS (ISO
14723)
Note: Applicable to both 6” & 2” Valve
P: Right Side N: Left Side (As per pressure requirements)
C: Cavity (Fluid Trapped in Valve Body Released Pressure)
**NOTE B: Above1.1 X MPD (MOP)
**NOTE A: Above 1.5 X MPD (MOP) MPD:46bar
18. An operational torque test shall be carried on
the valve
Torque test shall be done with maximum
operating pressure on one side and zero in
the bore and cavity to be held for 1 minute
The valve shall then be opened during
operation the maximum torque required to
initiate and sustain movement should be
recorded
19. Torque test shall be performed 3 times each
side
Valves requiring input forces that specified in
ISO 14723 Sec 7.20.1 or that fail to seal after
operation shall be rejected
20. N-Left
Side
(bar)
Cavity
(bar)
P-Right
Side
(bar)
Medium Test Set-up
Acceptance Criteria/
Requirements
*MPD 0.0 0.0 Water
Valve operating
at max.
Operating
pressure as per
specified
F.A.T &
API 6DSS (ISO 14723)
0.0 0.0 *MPD Water
F.A.T &
API 6DSS (ISO 14723)
Note: Applicable to both 6” & 2” Valve
*MPD (Maximum Pressure Differential) or MOP (Maximum Operating
Pressure) is maximum pressure required to allow valve opening using lever,
gearbox or actuator = 46.0bar
P: Right Side N: Left Side (As per Pressure Requirements)
C: Cavity (Fluid Trapped in Valve Released Pressure)
21. Valve subjected to low pressure seat test as
per test plan
Valve shall be operated to the open position
and then closed
Gas pressure shall be applied to one side of
valve (6 bar),measuring the leakage at the
center section after 5 minutes
Acceptance criteria will be based on API 6D
22. Valve subjected to high pressure seat test as
per test plan
Valve should be cycled open to close
Pressure should be increased to 1.1 times
maximum operating pressure and maintained
for 5 minutes to measure the leakage
Acceptance criteria will be based on API 6D
23. N-Left
Side
(bar)
Cavity
(bar)
P-Right
Side
(bar)
Medium
Time
(min)
Operating
Positions
Acceptance
Criteria/
Requirements
6.0 0.0 0.0 Air 5
F.A.T &
API 6DSS (ISO
14723)
0.0 0.0 6.0 Air 5
F.A.T &
API 6DSS (ISO
14723)
**NOTE B
1.1 X
MPD
0.0 0.0 Air 5
F.A.T &
API 6DSS (ISO
14723)
0.0 0.0
**NOTE B
1.1 X
MPD
Air 5
F.A.T &
API 6DSS (ISO
14723)
Note: Applicable to both 6” & 2” Valve
P: Right Side N: Left Side (As per Pressure Test Requirements)
C: Cavity (Fluid Trapped in Valve Body Released Pressure)
MPD:46bar**NOTE B: Above1.1 X MPD (MOP)
24. After completion of pressure test, Valve will
be subjected to drift test by drift tool when
pulled through each end of valve
29. Useful Information Checklist Guide from API 6DSS
prior to Product Testing at Site.
30.
31. Surface
Preparation
Paint System
Requirement
No. Of Coats
Dry Film
Thickness
Other
Requirement
Abrasive Blast
Min. SA 2
As Required in
Product Data
Requirements
Immersion/
Underwater
Paint
Barrier
Coating Type
1st Coat -
Primer Coat
2nd Coat-
Finishing
Coat (Color)
Min. Total
DFT 350µm
As Required
in Product
Data.
Cathodic
Disbondment
Resistant
Anti-
Corrosive
Subsea Valve – External Protective Coating Recommendation
Subsea Valve – External Protective Coating System Selection
Surface
Preparation
Paint System No. Of Coats
Dry Film
Thickness
Other
Requirement
Abrasive Blast
to SA 3
Interzone 954
X 2 Coats
Modified Epoxy
2-Pax
Immersion Paint
& Barrier Coat
1st Coat -
Primer Coat
2nd Coat-
Finishing
Coat (Golden
Yellow)
Total:
>450µm
Cathodic
Disbondment
Resistant
Anti-
Corrosive
AsperDoc.No.(PC-200-
912-8019-51)
32. To Protect: The product (valve) from damage or loss during handling.
To Protect: The product (valve) from atmospheric corrosion.
Open Position: Product (valve) to be dispatched in this Open Position.
Required Markings – Project valve no. Tender/Purchase Order.
Requisition no & Project No. On Packaging.
Even Weight Distribution - Packed appropriately with even weight
distribution with lifting lugs or designated lifting points.
