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PHE ONWJ Ltd. Specification for Water Mist System

PHEONWJ–O–SPE–0020 Rev. 0 Page 2 of 15

Revision Log Register

Document Number : PHEONWJ–O–SPE–0020

Document Title : Specification for Water Mist System

Revision : 0

Page Date RevisionPHE ONWJ

Reviewer




Table of Contents

Revision Log Register...................................................................................................................... 2

Table of Contents............................................................................................................................. 3

1. Scope........................................................................................................................................... 4

2. Definition of Terms....................................................................................................................... 4

3. Abbreviations ............................................................................................................................... 4

4. References................................................................................................................................... 4 4.1 Company Specifications ............................................................................................... 5 4.2 Codes and Standards ................................................................................................... 5

5. Applications.................................................................................................................................. 5

6. Calculation Capacity Requirements ............................................................................................. 5

7. Installation Requirements............................................................................................................. 6 7.1 General Requirements.................................................................................................. 6 7.2 Skid Structures ............................................................................................................. 7 7.3 The Water Storage and Pressurization Vessel ............................................................. 7 7.4 High Pressure Cylinder, Valving and Connection.......................................................... 8 7.5 Pressure Regulating ..................................................................................................... 8 7.6 Overpressure Protection ............................................................................................... 9 7.7 Control System ............................................................................................................. 9 7.8 Monitoring..................................................................................................................... 9 7.9 Cleanliness and Filtration............................................................................................ 10 7.10 Piping and Fittings ...................................................................................................... 10 7.11 Nozzles....................................................................................................................... 10 7.12 Instruction Label ......................................................................................................... 10

8. System Design........................................................................................................................... 11 8.1 Application Type and Rates ........................................................................................ 11 8.2 Nozzles....................................................................................................................... 11 8.3 Piping.......................................................................................................................... 12 8.4 Duration and Sequencing ........................................................................................... 12 8.5 Capacity...................................................................................................................... 12

9. Specific Requirement ................................................................................................................. 13

10. Working Plan and Documentation............................................................................................ 13

11. Installation and Commissioning................................................................................................ 14

12. Preparation for Shipment ......................................................................................................... 14

13. Quality Assurances .................................................................................................................. 15

14. Guarantee ................................................................................................................................ 15




1. Scope This specification describes the minimum requirements for the design, installation, inspectionand testing of Water Mist (WM) Systems to be installed on COMPANY facilities. This specification can be applied for both of onshore and offshore facilities.

2. Definition of Terms In this specification, the following definitions shall apply: COMPANY Pertamina Hulu Energi Offshore North West Java (PHE ONWJ)

Ltd. CONTRACTOR The party undertaking the contract to execute the work to which

this specification applies. MANUFACTURER The main supplier orManufacturer of the item of equipment to

which this specification applies including items designed andmanufactured by others.

COMPANY’s INSPECTOR An authorized representative of theCOMPANYwith the

responsibility to monitor and approve that all construction,inspection and testing is undertaken by manufacturer inaccordance with the requirements of this specification.

VENDOR, SUPPLIER The term“Vendor”, “Supplier”means the person, firm or

corporation from whom material, equipment or services havebeen ordered and includes permitted successors, assigns andwhere applicable, legal personal representatives.

PURCHASER The terms“Purchaser” may be used in various documents and

refer to the Contractor and include its duly appointedrepresentative(s) nominated from time to time by the Contractorand nominated as such to the Vendor. The same terms whenused herein shall mean Pertamina Hulu Energi Offshore NorthWest Java (PHE ONWJ) Ltd. when the passage of title iscontemplated.

3. Abbreviations ESD Emergency Shutdown

IP Ingress Protection

LEL Lower Explosive Limit

WM WaterMist

4. References The latest edition of applicable codes, standards and specifications listed below shall beapplied as a part of this specification.In case of conflict between any of these documents, unless otherwise herein modified, theCONTRACTOR OR VENDOR shall notify the COMPANY in writing for resolution.




4.1 Company Specifications

PHEONWJ-E-SPE-0140 Specification for Electrical and Instrument Cable Tray

PHEONWJ-F-PRC-0007 Site Technical Practices (STP) for Painting on MetalSurfaces

PHEONWJ-G-SPE-0100 Start up & Operating Manual Specification

PHEONWJ-G-SPE-0103 Facility Acceptance Checklist

PHEONWJ-G-SPE-0106 Specification for Design and As-Built Drawings

PHEONWJ-G-SPE-0255 Vendor Documentation and Inspection

PHEONWJ-I-PRC-0011 Quality Manual

PHEONWJ-J-SPE-0004 General Field Instrument and Installation Specification

PHEONWJ-M-SPE-0009 Pressure Vessel Design and Fabrication Specification

PHEONWJ-M-SPE-0376 Specification for Gas Turbine Compressor Package

PHEONWJ-O-PRC-0023 SHEP Design Basis

PHEONWJ-O-SPE-0420 Fire and Gas System for Rooms and Enclosures

PHEONWJ-X-SPE-0004 General Piping Design Specification

4.2 Codes and Standards

National Fire Protection Association NFPA 750 – Water Mist Fire Protection Systems(2000 edition) ASME Section VIII Boiler and Pressure Vessel Code

5. Applications WM systems should be based on good engineering design principles and considered as ameans to extinguish certain fires in enclosed areas. They may also be used in open areas butonly if the range, type, size and location of the fire hazards are predictable and clearly defined. WM works by differing combinations of heat absorption, steam generation, oxygen reduction,flame destabilization, liquid and surface cooling. It is the interaction of the heat from the fire,the water droplets and the ventilation which create the conditions under which fires may beextinguished. CONTRACTOR shall clearly define of the following fire hazards and operating condition toVENDOR:

• The fuel and fires types

• The fire locations

• The fire sizes

• Ventilation conditions

• The equipment and enclosure layouts and definitions.

6. Calculation Capacity Requirements

Water mist system consists of two main equipments:

1. Gas Cylinder

2. Water Tank




Picture 6.1 Typical water mist system

Gas cylinder is used to pressurize water to the system. The gas can be from air or nitrogenCylinder. As per NFPA standard 750, discharge time duration shall be minimum 30 minutes.

The number of gas cylinder requirement is formulized as follow:

Where;

N : Number of Spray Heads or Nozzles

t : Protection Time; 30 minutes (as per NFPA 750)

V : Cylinder Volume (Liter)

P : Cylinder Pressure (Bar)

The number of nozzle, cylinder volume and pressure requirement can be referred to specificvendor’s catalogue.

Water supply for water mist system is depending on the flowrate capacity of the nozzle. Theflowrate capacity can be referred to vendor’s catalogue.

The capacity of water tank requirement is derived from the following equation:

Where;

C : Water Tank Capacity (Liter)

N : Number of Spray Heads or Nozzles

q : Water Flowrate (Liter/min)

t : Protection Time (Minute)

7. Installation Requirements

7.1 General Requirements

• The system shall be a single system that shall protect a number of areas with thewater directed to the selected area. VENDOR shall advise on any limitations ofdistance or application which make such a zoned system impractical.




• The system should normally comprise of a water storage vessel which would bepressurized on actuation from a high-pressure gas cylinder with a pressureregulation system, pressure alarm system and distribution piping.

• The system actuation and discharge would be controlled via actuated valves whichwould control the vessel pressurization and water discharge.

• Where dual fluid (water/air) nozzles are used, valves would also control thedischarge of both fluids. The timing and sequencing of the discharge would becontrolled by an electrical or pneumatic logic and timer system.

• Systems would normally be required as integrated packages either skid or cabinetmounted only requiring connection to appropriate 24V DC actuation signals from thefire and gas panel, and discharge piping.

• VENDOR should provide detailed piping design, skid installation design and nozzlepositioning and the necessary technical support to allow CONTRACTOR to designand commission the system effectively.

• Storage containers (gas and water) shall be installed, mounted and bracedaccording to the manufacturer’s listing.

• The skid shall be of fabricated Carbon Steel grade

• The skid frame shall be painted as per PHEONWJ-F-PRC-0007, Site TechnicalPractices (STP) for Painting on Metal Surfaces

• The package shall be suitable on below specified environment.

• The package shall have label and identification

• Vendor shall supply engraved, layered, plastic labels as follow:- Skid tag no, warning and maintenance instruction label.- Instrument mounted of skid shall have permanently stamped 316 SS tag with

instrument tag no wired to the instrument.

7.2 Skid Structures

• The skid shall be of fabricated Carbon Steel Grade ASTM A-36 or equal andcomplying with requirements of COMPANY Specification.

• Skid Base Plinth shall be a channel section. The lower toe of the channel shall bewelded to the platform deck at the installed location by others.

• The base Plinth shall have the top plated with minimum ¼ inch thick steel, to providea flat surface for the placement cylinders.

• The skid top frame and uprights shall enclose the rear and sides of the skid, leavingthe front clear for access to cylinder and components.

• Frame cross braces for rigidity and component mounting shall be suitably sizedAngle section or Unistrut or equal.

• A minimum of 2 lifting eyes shall be installed at the top of the skid frame, for liftingpurpose. All side frame and base members shall be sized to carry the dead load(and safety loading factor) of the completely assembled skid, when lifted.All

lifting/pad eyes shall be tested and certified by third party inspection company.

• Skid Base/Plinth and frame shall be of all welded construction complying withrequirements of COMPANY Specification.

• The skid frame shall be painted Red (OSHA red or equal) to comply with paintingand surface preparation requirements of COMPANY Specification.

• The skid shall be clad with minimum 2mm 316 stainless steel plating secured with316 stainless steel fastenings. This is to minimize corrosion of hosing etc.

7.3 The Water Storage and Pressurization Vessel

• A single vessel should normally be provided both to store sufficient water to fulfill thedesign intent provide reserve supplies and allow pressurization during operation.




• The vessel shall be made, tested, approved and equipped and marked according tothe requirement of COMPANY specification PHEONWJ-M-SPE-0250 (or equalCOMPANY specification) or ASME Section VIII.

• The vessel should be designed and manufactured to give a minimum 20 yearslifetime without deterioration requiring repair. It may either be manufactured in acorrosion resistant material or coated internally and externally to give the requiredworking life.

• The water discharge outlet should be arranged so that it did not pick up any depositsfrom the bottom of the vessel.

• The filling point should be designed to that it cannot be incorrectly closed such that itis unable to withstand the operating pressure or could fail catastrophically

• The filling cap should be of a type which cannot be removed manually whenever thevessel is pressurized.

• The pressure vessel pressure gauge should be located so that it is apparent toanyone trying to open the cap that the vessel is pressurized

• A sight glass or local level indicator shall be provided to continuously monitor thelevel of water in the vessel during operation.

7.4 High Pressure Cylinder, Valving and Connection

• The system shall be pressurized either by one of the proprietary high pressurerechargeable type nitrogen cylinders used on site, or a dedicated high pressurecylinder with integral actuation valve.

• If a proprietary cylinder is specified, it should not be included in the scope of supply.However, there should be a dedicated location on the skid for the cylinder withfrontal access for ease of installation and removal. A fully rated flexible connectorand suitable fittings to match the cylinder valve outlet should be provided. Theregulator should not be mounted directly onto the cylinder but should be rigidlymounted on the skid. Cylinder clamps should be provided.

• Where a dedicated cylinder with integral actuating valve is provided, it should eitherbe rechargeable from breathing apparatus compressors or the site nitrogen supply.The pressure rating and capacity will be dependent on the pressures which areachievable from these sources.

• The cylinders should be designed, manufactured, tested and certified to arecognized pressure vessel or transportable gas container standard; whichever ismost appropriate to the application.The cylinders shall be mounted and supported in a rack.

• The cylinder should be capable of pressurizing a 500-liter water tank and operatingthe system after losing 15% of its initial charge.

• More than one cylinder may be used in tandem where appropriate. These may eitherbe both actuated or a master and slave arrangement.

• The valve design and in service connections should be such as to minimize thenumber of live joints and to minimize the rate of leakage from them. It should bepossible to re-close each cylinder after the system has been discharged while thereis still pressure in it.

• The cylinder(s) should be located so that it (they) can be removed from the front ofthe skid.

• It (They) should be clamped in place and connected via fully rated flexible hoses.

• If two or more cylinders are installed, each flexible hose shall be fitted with a fullyrated check valve at the manifold to prevent back-flow when a cylinder has beenremoved.

7.5 Pressure Regulating

• The regulator should be capable of passing sufficient air or nitrogen to charge thewater vessel to its operating pressure within 10 seconds of actuation of the




pressurization cylinder valves. It should also be capable of maintaining that pressureduring all design conditions of water discharge.

• Under normal operating conditions, the regulator should not vent excess pressure toatmosphere but this may be acceptable if it is part of the water vessel overpressureprotection system.

• The regulator should be of a type which can maintain its pressure settings over along period when not in use. It should not drift or vary by more than 10% of its outletsetting pressure over 6 months.

• The regulators should be suitable for both compressed air and Nitrogen to give theoption of changing pressurizing fluids in the future.

• The regulators should be possible to check the setting of the pressure regulatorwithout discharging a significant amount (greater than ½ %) of the pressurizingcylinder contents.

7.6 Overpressure Protection

• The over pressure protection system shall be installed at water storage andcompressed gas cylinder(s).

• The requirement of pressure relief valve(s) shall be according to the NFPA 750.

• The requirement of certification for PRV/PSV for overpressure protection.

7.7 Control System

• An integrated control system shall be provided which actuates, distributes andcontrols the system discharge to each of the protected spaces. It shall respond to anactuation signal which shall be continuous until reset at the Fire and Gas panel.

• The integrated control system should have a maximum supply of 2 Amp at 24V DCbut this should be confirmed for each specific application.

• Pressure switches shall be provided to allow signals to indicate that the system hasdischarged into each of the protected areas. The switches shall have 2 Amp, 24 VDC minimum rating and transmit dry contact signal. The control systems should not depend on the 24V DC actuation signals as the solesource of power unless all actions requiring that power can be completed within 30seconds and the loads are within the capacity of the actuating supply.

• If the control system requires a power source, this should be clearly stated inVENDOR’s proposal.

• Junction boxes, electrical equipment and fittings should have a minimum rating ofIP44. Higher standards may be requested for outdoor skid locations.

7.8 Monitoring

• No remote monitoring of the system is required other than the pressure switches toprovide indication of system discharge to each of the protected areas. Otherwise, allmonitoring will be carried out locally.

• Sight glass or level indicators should be provided for local indicating of the level inthe tank during operation.

• Pressure gauge shall be provided at the pressurization cylinders to indicate thepressure of contents.

• A pressure gauge either integral with or immediately downstream of the regulator isrequired to allow setting of the pressure and periodic monitoring of that setting.

• A pressure gauge should be provided on the water vessel to give a clear indicationthat it is pressurized, and the pressure within it.

• All circuits connected to the fire and gas panel shall be continuously monitored forfault.




7.9 Cleanliness and Filtration

• The system should be designed and installed so that the chance of there beingdebris including biological growth material accumulating in the system is minimized.

• Any filters should have sufficient surface area to contain whatever debris may beexpected and still leave sufficient room for the full system discharge to pass throughwithout significant pressure drop.

7.10 Piping and Fittings

• CONTRACTOR shall provide Piping and fittings including pipe support.

• The discharge piping shall be normally dry.

• The piping and fittings should be corrosion resistant and designed to withstand boththe static and transient loadings associated with the system discharge.

• The piping and fittings within the protected areas shall be suitable for the normaloperating environment of the enclosures(note that turbine enclosures can run hot)

and shall also be suitable for short-term fire exposure (2 minutes at 1000oC).

• The piping design and installation shall address all of the points in sections 6 and 7of this specification.

• The piping shall be leak and integrity tested at 110% of the maximum designpressure, with higher test pressures if higher transient loadings are anticipated.

• Site welding or other hot work shall not be used for assembly.

• The piping system should be 316 SS material on the selected hazard area.

7.11 Nozzles

• The nozzles shall be of a type which can provide the correct application rate, spraypattern and droplet size to achieve the design intent when used in the arrangementsdefined in the design for the protected space as outlined in section 6.

• The nozzles may be of either a single or twin fluid type and shall be effective andrated for the maximum system pressure when subject to 2 minutes hydrocarbon fireexposure, prior to discharge.

Specification or nozzles are as follow:

• Orifice size to be determined by Vendor. Code for orifice size shall be stamped onthe body of the nozzles.

• Nozzles material shall be stainless steel.

• Nozzles shall be regular sealed type complete with a sealing/burst installed or analternative spring loaded cap, to prevent the ingress to foreign matter particles to thenozzles.

• Nozzles shall be ½” NPT male connection size.

7.12 Instruction Label

• A clear and concise instruction label should be provided on the skid giving theoperating procedure for manual release of the system both as an initial dischargeand as a second discharge.

• The relevant valves and actuators/overrides should be clearly marked andaccessible.




8. System Design

Each system must be designed specifically to match the range of fire hazards, enclosuredimensions, ventilation and combustion conditions. VENDOR must demonstrate that they have carried out sufficient applicable fire testing andhave developed effective design parameters for the extinguishment of the range of fires andconditions identified for each of the hazard areas.

8.1 Application Type and Rates

• The application type shall be suitable for the fire hazard within the specifiedenclosure any shall have proven effectiveness.

• Volumetric fill may be used for fires in enclosures of 250 m2or less, where theventilation has been shut down, and any air openings do not exceed a total of 0.5 m2 in the walls or floor or 1.0 m2in the ceiling.

• VENDOR should use application rates based on their own research and areresponsible for ensuring that they are effective and have a reasonable design safetyfactors for the specified applications.

8.1.1 Application Rate for Volumetric Fill Applications:

• The application rate shall not be the minimum determined by the testing;rather it shall be at least 150% of the test application rates.

• Where the means of extinguishment is a combination of mechanismsincluding the heat absorption and vaporization, application rates forvolumetric fill should be at least 1 liter/min/m3for 20 seconds with 70% bymass of droplets less than 200 micron.

• The individual volume of any individual unfilled spaces should be definedand not exceed 3 m3and the total volume of unfilled spaces should notexceed 5% of the enclosure volume.

• Where the volume of the module exceeds 250 m3or the ceiling height isgreater than 4m, the application rate should increase to 1.5 liters/min/m3for20 seconds with 70% by mass of droplets under 200 micron unless theidentified hazard sources are covered or enveloped as described in the localarea coverage on surface application rate for local application.

8.1.2 Surface Application Rate for Local Application

The surface application rate should be at least 5 liters/min/m2. There should beno individual dry areas greater than 0.05 m. and at least 95% of the nominatedsurface should be covered.

8.1.3 Volumetric Application Rate for Local Application

The volumetric application rates should be at least 1.5 liters/min/m3with 70% ofdroplets by mass less than 200 micron. The radius from the equipment which isfully enveloped in spray or a solid boundary will define the volume of theprotected space.

8.2 Nozzles

Nozzle type, spacing, flow rate and positioning should be based on representativetesting for the fires and conditions specified. These parameters should be based ondesign data derived from representative testing and should be clearly stated in thedesign dossier. They should be sized and located to meet the application parametersbelow.




8.2.1 Droplet Size

The droplet sizes of the nozzles should be stated in terms of either apercentage by mass under a certain size, or a size distribution curve. Thevolumetric fill applications, 70% by mass should be expected to be less than200 micron.

Representative testing should be carried out to demonstrate that they match thecharacteristics of those nozzles used in those fire tests which are relevant to thedesign fire cases.

8.2.2 Spray Pattern

The spray pattern for each nozzle should be defined in terms of the followingparameters:

a. discharge angle

b. effective range when mounted horizontally

c. vertical spray pattern (pattern diameter vs. distance from the nozzle)

d. horizontal spray pattern (pattern diameter vs. distance from the nozzle)

8.2.3 Numbers and Positioning

The design for each specific application should state the numbers of each typeof nozzle required and the position of the nozzles.

8.2.4 Flow rate and Pressure

The individual nozzle flow rate and pressure shall be sufficient to achieve thedesign parameters.

8.3 Piping

The piping shall be designed and built to recognized standards capable of withstandingthe operating and environmental conditions.

VENDOR shall carry out a hydraulic analysis to confirm the flow rates at each nozzlemeet the minimum requirement of the design and that excess flows are minimized.Data files or manual calculation shall be provided to COMPANY’s approval.

8.4 Duration and Sequencing

The system should always give a timed discharge of predetermined duration (aminimum of 30 seconds shall be expected).

If the effectiveness of the system depends on other control actions such as theshutdown of equipment, ventilation, dampers and fuel supplies, then an appropriatetime delay shall be specified before discharge. COMPANY shall agree this.

8.5 Capacity

The system shall store enough water, pressurizing gas, additives, and (if used) secondfluid for twin fluid nozzles to fulfill its function. The quantity to fulfill the function isdefined as the total of:

• The quantity required for a single or sequential discharge, as defined by the design.

• A reserve quantity equal to the above.

• Twice the quantity required charging the distribution piping.




9. Specific Requirement

Specific requirement below shall be applied for the compressor turbine package, generatorturbine package and/or turbine package enclosure when WM system is applied.

• CONTRACTOR and/or VENDOR shall fully understand the hazards and Fire Water systemshall design to meet them.

• CONTRACTOR shall ensure that all enclosure will be fitted with a forced ventilationsystem.

• CONTRACTOR shall modify (if any) to ensure the ventilation within enclosure shall be keptoperating and dampers open to allow venting to atmosphere at HIGH 60% LEL. An ESDshould be initiated. On Detection of a fire, the ventilation system is stopped and dampersclosed for the WM to be discharged.

• However, all specific requirements should be discussed to COMPANY.

• Contractor shall ensure any asphyxiation hazard of N2 to be considered.

10. Working Plan and Documentation

The CONTRACTOR and/or VENDOR shall submit working plan to COMPANY’s approvalbefore any equipment is installed or remodeled. Engineering shall include the following as a minimum:For Water Mist Package: a. Design Skid, including production of the following drawing:

- Skid General Arrangement Drawing

- P & I Diagram/System Schematic

- Detail Layout of Discharge Manifold

- General Arrangement and Assembly

- Skid Frame & Plinth Structural arrangement drawing, including the detailing of Weldtypes.

b. Perform calculation for the system including the following:

- Discharge Nozzles’ Orifice sizing and Selection

- Total Volume of water and nitrogen required and Selection of size and type of nitrogenCylinders

- Hydraulic Calculations to determine Discharge Piping and Cylinder Header sizing

- Structural Calculations for Cylinder Skid c. Produce detailed component drawings including for:

- Cylinder Valve Arrangement

- Cylinder Discharge Head Arrangement

- Discharge Nozzles Arrangement

- Piping Schematic Hook-up between Cylinders Skid and Discharge Nozzles

- Produce complete Bill of Materials and Components for entire packageSupply the Final Data Package for the complete system to be supplied including:

- Catalog data for all components

- Installation, Operating and Maintenance Instructions for all components and the completedsystem




- Produce purpose written document for the system, providing system description, designcriteria, design calculations, system drawings, schematic logic, cause and effect charts andsystem operation

- "As Built" copies of all drawings detailed in the preceding subsections.

- Warranty and Guarantee certification for the complete system and individual components.

- Supply Mill certificates for components such as 316 S/S Tubing. The CONTRACTOR shall provide the following documentation, however it shall, as aminimum, confirm the requirement of this specification and note any exceptions.

� Product data, schematic logic, cause and effect charts, panel layouts, dimension and sitedrawings including pipe networks and layouts, hydraulic and pneumatic calculations andperformance criteria. These documents shall be submitted to COMPANY 3 weeks afterissuing purchase order (PO) and subject to COMPANY approval. Approval of documentswill not relieve the responsibility for complying with the requirements of this specification.

� Hydraulic and Pneumatic Calculation shall be prepared on form sheets that include asummary sheet, detailed work sheet and a graph sheet.

� A copy of the engineering design, manufacturer’s installation, operation and maintenancemanuals and shall be supplied upon completion of the installation.

� System commissioning data (in a format recommended by the manufacturer and per theinstructions provided by the manufacturer) within 30 days of completion of the installation.

11. Installation and Commissioning

The installation work shall be according to the isometric drawings and instruction.

Particular attention should be paid to the correct pipe sizing, nozzle positioning andcleanliness.

The final system should be pressure tested.

Procedure for Commissioning and Test should be submitted for COMPANY approval prior tothe work commencement.

The COMPANY or COMPANY’S INSPECTOR shall attend commissioning of the entireinstallation.

The CONTRACTOR shall provide all necessary instrumentation, equipment, materials andlabor.

The CONTRACTOR shall record all tests and system calibrations and a copy of these resultsshall be retained on site in the System Log Book.

12. Preparation for Shipment

VENDOR should apply COMPANY General Procurement Specification (or equal COMPANYspecification). In case, if it is noted in this specification, instruments or parts which can be damaged duringshipment, shall be packaged separately in the original manufacture’s boxes. Each package shall be identified with purchase order number and content list in aweatherproof envelope.




13. Quality Assurances

The Quality Assurances shall be according to COMPANY specification PHEONWJ-I-PRC-0011, Quality Manual.

14. Guarantee

VENDOR and/or CONTRACTOR shall guarantee where the system or components in anoffshore or coastal environment against corrosion which would impair their structural strengthor operability for a period of 5 years. All components should be guaranteed against functional failure for 2 years aftercommissioning.


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