Piping and Equipment Insulation

SPECIFICATION FOR PIPING AND EQUIPMENT INSULATION

Rev 02

REVISION CHANGE DETAILS Rev 01

Location of Change General (Any changes on future issues will be Indicated with a ?)

02

General

Brief Description of Change Modified / Developed to reflect Project-wide Interdiscipline Requirements / Comments.

Reformatted to comply with current document standard format. Revised where indicated thus:

Document No. 1000-S-90-38-S-6003-00

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Rev 02

1 1.2 1.4

TABLE OF CONTENTS INTRODUCTION.................................................................................................... 4 SYSTEMS EXCLUDED .......................................................................................... 4 ABBREVIATIONS................................................................................................... 4

2 2.2

CODES, STANDARDS AND REFERENCES ......................................................... 5 ORDER OF PRECEDENCE ................................................................................... 5

3

SCOPE OF WORK................................................................................................. 5

4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.11 4.12 4.13 4.14

MATERIALS .......................................................................................................... 6 GENERAL.............................................................................................................. 6 MINERAL WOOL.................................................................................................... 6 CELLULAR GLASS ................................................................................................ 6 FLEXIBLE ELASTOMERIC FOAM ......................................................................... 6 NON-METALLIC INSULATION COVER/NOISE BARRIER COVER ........................ 7 STAINLESS STEEL CLADDING............................................................................. 7 PROPRIETARY INSULATION JACKETS ............................................................... 7 WIRE AND BANDING ............................................................................................ 7 EXPANDED METAL............................................................................................... 7 FASTENINGS ........................................................................................................ 7 ‘S’ CLIPS................................................................................................................ 7 ADHESIVE, ANTI-ABRASION COMPOUND AND MASTIC SEALANT ................... 8 VAPOUR BARRIER ............................................................................................... 8 PACKAGING AND SHIPMENT............................................................................... 8

5

INSULATION SYSTEMS........................................................................................ 8

6 6.1 6.2 6.3

CLASSIFICATION AND DESIGNATION................................................................ 8 INSULATION SELECTION..................................................................................... 8 CLASSIFICATION.................................................................................................. 9 DESIGNATION OF SYSTEMS ............................................................................... 9

7 7.1 7.2 7.3 7.4 7.5

APPLICATION REQUIREMENTS ........................................................................ 10 GENERAL............................................................................................................ 10 MINERAL WOOL.................................................................................................. 11 CELLULAR GLASS .............................................................................................. 11 FLEXIBLE ELASTOMERIC FOAM ....................................................................... 11 STAINLESS STEEL CLADDING........................................................................... 11

8 8.1

PAINTING ............................................................................................................ 11 GENERAL............................................................................................................ 11

9 9.1

INSULATION OF HOT SURFACES IN HAZARDOUS AREAS ............................ 12 GENERAL............................................................................................................ 12

10 10.1

QUALITY CONTROL, CERTIFICATION AND GUARANTEES............................. 12 GENERAL............................................................................................................ 12

11 11.1 11.2

ACOUSTIC INSULATION SPECIFICATION ........................................................ 12 SCOPE ................................................................................................................ 12 DESIGN AND MATERIALS .................................................................................. 12

TABLE 1 TABLE 2 TABLE 3 TABLE 4 TABLE 5 TABLE 6 TABLE 7 TABLE 8 TABLE 9

– WINTERISATION.................................................................................................... 14 - INSULATION THICKNESS - FOR HEAT CONSERVATION OFFSHORE................. 15 - INSULATION THICKNESS - FOR HEAT CONSERVATION ONSHORE................... 16 – NUMBER & THICKNESS OF INSULATION LAYERS (MINERAL WOOL)................ 17 – PERSONNEL PROTECTION .................................................................................. 18 – COLD CONSERVATION......................................................................................... 19 - INSULATION THICKNESS - FOR COLD CONSERVATION ONSHORE .................. 20 - INSULATION THICKNESS - FOR CONDENSATION CONTROL ONSHORE........... 21 – HEAT CONSERVATION- ECONOMIC THICKNESS OF FLEXIBLE ELASTOMERIC FOAM (MM).................................................................................. 22

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1

INTRODUCTION

1.1

PURPOSE

Rev 02

This document defines the minimum technical requirements for the design, supply, storage, application and inspection of thermal and acoustic insulation of pipe work and equipment for onshore and offshore oil and gas exploration and production facilities to be operated by Sakhalin Energy Investment Company, Ltd (SEIC). 1.2

SYSTEMS EXCLUDED • • • •

1.3

All HVAC and architectural services Risers and sub sea pipe work Proprietary mechanical packages Accommodation areas

DISTRIBUTION, INTENDED USE AND REGULATORY CONSIDERATIONS Unless otherwise authorised by SEIC, the distribution of this document is confined to the nominated Contractors and Suppliers.

1.4

DEFINITIONS

1.4.1

General definitions The standard general definitions below shall be included if the words defined are used in the particular document: The Contractor is the party, which carries out all or part of the design, engineering, procurement, construction, commissioning or management of a project or operation/maintenance of a facility. The Principal may undertake all or part of the duties of the Contractor. The Supplier/Manufacturer is the party, which manufactures or supplies equipment and services to perform the duties specified by the Contractor. The Principal is Sakhalin Energy Investment Company, Ltd. (SEIC) - the party, which initiates the project and ultimately pays for its design and construction. The Principal will generally specify the technical requirements. The Principal may also include an agent or consultant authorised to act for, and on behalf of, the Principal. The word shall indicates a requirement. The word should indicates a recommendation.

1.4

ABBREVIATIONS ASME -

American Society of Mechanical Engineers

BS –

British Standard

CINI -

Stichting Isolatie Nederlandse Industrie

ISO –

International Organization for Standardization

NDE –

Non-Destructive Examination

SEIC -

Sakhalin Energy Investment Company, Ltd.

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Rev 02

2

CODES, STANDARDS AND REFERENCES

2.1

In conjunction with this specification, the latest editions of the Codes, Standards, Regulations and References listed below shall be applicable:

Definitions of terms relating to thermal insulating materials Stainless and heat-resisting chromium steel plate, sheet and strip Test for density of preformed pipe-covering type thermal insulation Test for density of preformed block type thermal insulation Sampling and acceptance of preformed thermal insulation Mineral fibre preformed pipe insulation Mineral fibre blanket insulation and blanket type pipe insulation Mineral fibre block and board thermal insulation Surface burning characteristics Insulation for industries Acoustics; materials for acoustical applications; determinations of airflow resistance

ASTM C168 ASTM C176 ASTM C302 ASTM C303 ASTM C390 ASTM C547 ASTM C592 ASTM C612 ASTM E84 CINI ISO 9053

Standards equivalent to those listed above may be substituted upon specific approval by the Principal. Approval of equivalent standards shall not relieve the Supplier or Contractor from compliance with specific codes and standards applicable to materials offered. 2.2

ORDER OF PRECEDENCE The order of precedence shall be as follows: • • • • •

Material requisition (where applicable) Data sheets This specification SEIC specifications referenced herein Industry codes and standards referenced herein.

In case of any conflict between specifications, data sheets, enquiry documents, scope of work or drawings, or any lack of clear definition as to the applicability of any specification or standard, Supplier shall obtain a written clarification from Purchaser. Purchaser 's approval of Supplier's drawings/specifications in no case absolves Supplier for deviations contained therein, unless such deviations are clearly brought to Purchaser 's attention, and Purchaser ‘s written approval is received. In case of conflict between the English and Russian versions of this specification, the English version shall take precedence. 3

SCOPE OF WORK

3.1

The Project facilities design shall include piping and equipment drawings together with the line list, equipment list and other documents deemed necessary to enable the Contractor to measure, plan, organise and install the required insulation.

3.2

Pipe work and equipment shall be insulated where stated on the line list and isometric for pipe work, and on the equipment data sheet for equipment.

3.3

Operating temperatures shall be used as the basis for the selection of insulation thickness, as defined on the line lists, or equipment data sheets. Temperature used for the selection of materials shall be the design temperature.

3.4

This Specification shall not be applied to compressors, pumps and other rotating equipment, including exhausts for turbines.

3.5

The Contractor shall supply, store and install the insulation in accordance with this specification and the specifications/standards referred within.

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Rev 02

3.6

The insulation shall be applied by competent workmen, with suitable experience in the class of work, and shall be executed in accordance with CINI-Insulation for Industries.

3.7

The Contractor shall comply with all statutory offshore and onshore health and safety requirements.

3.8

Where a line or equipment is designated as requiring two classes of insulation, and the insulating system and method is the same for both classes, the most stringent shall apply. If the insulating systems are different for both classes, then both systems shall be applied.

3.9

Valves, flanges, vessel manway covers, nozzles and flanges on equipment shall only be insulated on the following systems: a) Cold conservation b) Acoustic insulation (Class C) c) Electrically traced lines d) Winterisation e) Lines operating above 205C in hazardous areas

3.9.1

For winterisation and electrically traced lines, the flanges, valves etc shall be insulated using proprietary insulation jackets.

3.9.2

For cold insulation, acoustic class C insulation and for lines operating above 205 degree C in hazardous areas, the piping insulation covering over the flanges, valves etc shall be to the same specification and thickness as that applied to the pipe. Upstream of any valve, flange, etc. the system shall be terminated at a distance that would allow the removal of the bolts. The insulation shall then be re-started downstream, so that if the insulation is removed from the valves, flanges etc, the pipe insulation remains sealed and deluge proof.

4

MATERIALS

4.1

GENERAL

4.1.1

All materials shall: a) b) c) d) e) f)

be of water repellent grade have a low leachable halide concentration be non-combustible have low smoke emission be resistant to sunlight and UV radiation have Lloyds approval for use in all areas of an Offshore platform

4.2

MINERAL WOOL

4.2.1

Rigid mineral wool pre formed sections and slabs, having a minimum density 125 kg/m 3 3 (Density range 125 – 150 kg/m )

4.2.2

For acoustic insulation, only flexible or semi-rigid mineral wool complying with the requirements of Section 11.0 shall be used.

4.3

CELLULAR GLASS

4.3.1

Rigid pre-formed cellular glass shall have a minimum density of 120 kg/m 3, compressive strength of 7 kg/cm and nil vapour permeability.

4.3.2

To be a minimum of two coat system.

4.4

FLEXIBLE ELASTOMERIC FOAM

4.4.1

Pre-formed pipe sections shall have a minimum density of 50 kg/m 3 , be closed cell and have nil vapour permeability.

4.4.2

To be applied in a single layer

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Rev 02

4.5

NON-METALLIC INSULATION COVER/NOISE BARRIER COVER

4.5.1

The cover shall be a weatherproof, non-permeable, fire-resistant non-metallic type cover.

4.5.2

It shall be a dry applied system

4.5.3

Where the cover is used on cold lines, the insulation Manufacturer shall confirm that the covering will also act as a vapour barrier. If this is not the case, a vapour barrier shall be applied prior to the top cover.

4.5.4

If the insulation cover is applied at site, it shall be in accordance with the Manufacturer’s recommendations.

4.5.5

The cover thickness shall be as recommended by the insulation Manufacturer, shall be robust to withstand a hostile environment, and be easily repairable without losing its integrity.

4.5.6

The cover shall not degrade in sunlight or UV radiation.

4.6

STAINLESS STEEL CLADDING

4.6.1

The use of stainless steel cladding sheets in accordance with BS 1449 Tape 316 S33 shall be allowed for: Areas which are exposed to high levels of mechanical damage This shall be applied in addition to non-metallic covering

4.6.2

Stainless steel cladding shall be 0.6 mm thick for sizes up to 10” NB and 08.mm thick for sizes above 10” NB and equipment.

4.6.3

All low points in cladding shall be provided with drain holes to prevent collection of water.

4.7

PROPRIETARY INSULATION JACKETS The jackets shall be: a) designed to be suitable for required shape b) easily removable c) prevent ingress of water d) suitable for temperature range, and fire resistant. e) resistant to sunlight and UV radiation

4.8

WIRE AND BANDING All tie wire shall be 316 stainless steel 0.7 mm diameter. All banding shall be 316 stainless steel, for size up to 4” NB banding shall be 13mm wide x 0.4mm thick, for size greater than 4” and equipment banding shall be 20mm wide x 0.4 mm thick.

4.9

EXPANDED METAL Where guards are used for personnel protection, 304 stainless steel expanded metal shall be used.

4.10

FASTENINGS Nuts, bolts self-tapping screws and other fastenings shall be 316 stainless steel.

4.11

‘S’ CLIPS

4.11.1

’S’ clips shall be of 316 stainless steel and minimum thickness 0.4 mm

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SPECIFICATION FOR PIPING AND EQUIPMENT INSULATION 4.12

Rev 02

ADHESIVE, ANTI-ABRASION COMPOUND AND MASTIC SEALANT Joint sealant, anti-abrasion compound and adhesive used for insulation shall be as recommended by the insulation Manufacturer.

4.12.2

They shall be suitable for the temperature range and shall be fire-resistant.

4.13

VAPOUR BARRIER The vapour barrier shall comprise of two layers of vapour barrier compound with scrim cloth in between. The scrim cloth shall be evenly woven fibreglass cloth. The vapour barrier shall be non-permeable, suitable for the temperature range, shall be fire resistant.

4.14

PACKAGING AND SHIPMENT Packaging and shipment of materials shall be in accordance with Supplier’s standard. All containers shall be legibly marked with the name of the supplier, insulation size, type, density, quantity contained and gross weight in kilograms.

5

INSULATION SYSTEMS The following basic insulating systems shall be used: System 1 Rigid mineral wool preformed sections or slabs. System 2 Guards fabricated from expanded metal mesh to 0.0794-SF-304 grade stainless steel , maximum mesh dimensions 50mm suitably stiffened for rigidity. Stand-off from surfaces shall be 75 mm wherever possible. Clamps shall be insulated from hot or cold surfaces, to stop heat/cold transfer. Expanded metal shall provide a minimum open area of 75%. System 3 Electrically traced with insulation as defined in System 1. System 4 Flexible or semi-rigid mineral wool System 5 Cellular glass pre-formed sections System 6 Flexible elastomer foam pipe sections System 7 Electrically traced with insulation as defined in System 6.

6

CLASSIFICATION AND DESIGNATION

6.1

INSULATION SELECTION

6.1.1

The classification and thickness shall be shown on isometrics, line lists P&IDs etc., where applicable.

6.1.2

On P&IDs the basic classification shall be added to the line definition number. Example: 8” – PL – 12135 – 11490 – H, where H denoted Class H – heat conversion

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SPECIFICATION FOR PIPING AND EQUIPMENT INSULATION 6.2

Rev 02

CLASSIFICATION The following classifications shall be used as applicable to this project: Class H Class HA

= =

Heat conservation Heat conservation incorporating acoustic

Class PG Class PP Class PA

= = =

Personnel Protection (guards) Personnel Protection (insulation) Personnel Protection incorporating Acoustic insulation

Class EP Class EW Class EA

= = =

Electrical Tracing (Process) Electrical Tracing (Winterisation) Heat Tracing incorporating acoustic insulation

Class A

=

Acoustic insulation

Class CC Class CA

= =

Cold Conservation Cold Conservation incorporating acoustic insulation

Class PC

=

Anti- Condensation

6.3

DESIGNATION OF SYSTEMS

6.3.1

Class H – Heat conservation For lines 2” and below, operating from 0°C to 115°C, select system 6, thickness to table 9. For all other applications select system 1, thickness to Table 2 for Offshore or Table 3 for Onshore.

6.3.2

Class PP/PG – Personnel Protection Personnel protection is to be provided for piping (including flanges and valves) and equipment that is operating at temperatures in excess of 65 deg C, and is within 2m vertically and 1 metre horizontally of the deck, platform, ladders, or normal path of travel by personnel. For protection from hot surfaces operating above 65 deg C, use guards as System 2, set at a distance of 75 mm from the surface. For protection from hot surfaces operating above 205 deg C, which are hazardous areas, and, in places where guards are impractical, use System 1 with thickness as in table 5.

6.3.3

Class EP – Electrical tracing on Process lines. For lines 2” and below, operating from 0°C to 115°C, select system 6, thickness to table 9.For all other applications select system 3, thickness to table 2 for Offshore or table 3 for Onshore.

6.3.4

Class EW – Winterisation plus electric tracing For lines 2” and below, maintaining a temperature above 0°C, select system 6, thickness to table 9.For lines 3” and above select system 3, thickness to table 2 for Offshore or table 3 for Onshore. Note – The isometric will show the extent of the insulation for classes EP and EW.

6.3.5

Class A – Acoustic Insulation This class has three levels of noise protection that are defined in section 11.0 Class A = AA Class B = AB Class C = AC System 4 to be used in accordance with section 11.0

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SPECIFICATION FOR PIPING AND EQUIPMENT INSULATION 6.3.6

Rev 02

Class HA, EA and PA – Thermal Incorporating Acoustic Insulation System 4 to be used throughout, the thickness shall be: HAA – Thickness in table 2 or 50 mm, whichever is the greater (see section 11.0) HAB - Thickness in table 2 or 100 mm, whichever is the greater (see section 11.0) HAC - Thickness in table 2 or 100 mm, whichever is the greater (see section 11.0) PAA – 50 mm (see section 11.0) PAB – 100 mm (see section 11.0) PAC – 100 mm (see section 11.0)

6.3.7

Class CC – Cold Conservation System 5, thickness to table 6.for offshore or table 7 for onshore.

6.3.8

Class CA – Cold Conservation plus Acoustic This class is split into three different types CAA (class A), CAB (class B) and CAC (class C). For cold use System 5, thickness to table 5, plus for Acoustic use System 4, thickness see 11.0 The cold system including vapour barrier shall be applied first, and the Acoustic system applied over the cold system.

6.3.9

Class PC – Anti-Condensation System 5, thickness to Table 8. Note –The three letter designation for acoustic insulation i.e.HAA,HAB etc.shall be referenced on isometric drawings only.

7

APPLICATION REQUIREMENTS

7.1

GENERAL

7.1.1

The application of insulation shall conform to the requirements of this specification and the codes and specifications referred to within.

7.1.2

All surfaces to be insulated shall be dry and clean, free from oil, grease and dirt and shall be painted to the project Specification (see section 8.0).

7.1.3

Insulation materials shall be protected from the elements and kept completely dry prior to application and completion using permanent weather barriers. If insulation should get wet it shall be removed and replaced.

7.1.4

Pipe work insulation shall be carried out with rigid pre-formed sectional material. All tees shall be insulated with mitred sections of the same material and thickness as that used for straight piping. Bends and elbows can be insulated with mitre sections as above, or preformed bends can be utilised.

7.1.5

Insulation shall be installed to the Insulation Manufacturer’s standard instructions.

7.1.6

The thickness of insulation shall be as specified in the appropriate Tables of this specification, as applicable to the duty. The number of layers of mineral wool insulation shall be as specified in Table 4 of this specification, but shall be a minimum of two layers for cold conservation.

7.1.7

Permanent terminations shall be fully vapour sealed and waterproofed.

7.1.8

All lateral joints between pre-formed insulation sections shall be staggered. Additional layers of insulation shall be applied in the same manner as the first layer, with lateral and end joints staggered over the preceding layer so that no joints coincide, except where they cross at right angles.

7.1.9

All joints shall be tightly butted together so as to eliminate voids.

7.1.10

At all flanges the insulation shall be cut at a 45 bevel to allow bolt removal without causing damage to the insulation.

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Rev 02

Insulation shall be continuous at all points of support. Provision shall be made to prevent seepage of water down pipe hangers into the insulation. 7.1.13

Where paintwork and insulation is damaged or removed, the damaged insulation shall be removed, the paintwork made good, and the insulation re-applied in accordance with this specification.

7.1.14

Contraction joints shall be provided as required.

7.2

MINERAL WOOL

7.2.1

Each mineral wool insulation layer shall be secured with stainless steel bands or wire throughout.

7.2.2

Equipment shall be insulated with rigid slabs, bevelled lags or flexible mattresses. Standard pipe sections shall be used where diameter permits.

7.2.3

Rigid slab insulation shall be laid with staggered joints and secured with banding at 250mm centres. When the bands are in position there shall be no cracks or open joints.

7.2.4

Rigid slab insulation for heads of vessels shall be segmental in shape, held together with binding wire.

7.2.5

All joints shall be covered with self-adhesive metal foil tape.

7.3

CELLULAR GLASS

7.3.1

Anti-abrasive compound, as recommended by the insulation Manufacturer, shall be applied to the inside surface of the insulation. It shall not be applied directly onto the pipe work.

7.3.2

Adhesive, as recommended by the insulation Manufacturer, shall be applied to all butt joints. The selection of the adhesive shall be based on the temperature range of the pipe work/vessel and its compatibility with the protective coating on the pipe work/vessel.

7.3.3

Stainless steel bands shall secure the cellular glass. This shall be positioned at centres as recommended by the insulation Manufacturer.

7.3.4

All joints shall be covered with self-adhesive metal tape.

7.3.5

Vapour barrier, as recommended by the insulation Manufacturer, shall be applied to each layer of insulation.

7.3.6

Vapour barrier, as recommended by the insulation Manufacturer, shall be applied to outer coating.

7.4

FLEXIBLE ELASTOMERIC FOAM

7.4.1

Pipe section insulation shall be used throughout, this shall be applied in one layer.

7.4.2

The insulation shall be glued with the Manufacturers recommended adhesive and in accordance with his recommendations.

7.4.3

All joints shall be covered with self-adhesive metal foil tape.

7.5

STAINLESS STEEL CLADDING

7.5.1

All joints shall be completed with mastic to ensure that the cladding is deluge proof, and the sheeting sections are arranged to shed water.

7.5.2

Self-tapping screws shall not be used.

8

PAINTING

8.1

GENERAL

8.1.1

All lines and equipment to be insulated shall be fully painted in accordance with the specification 1000-S-90-38-S-6010-00-Painting and Coating specification.

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Rev 02

9

INSULATION OF HOT SURFACES IN HAZARDOUS AREAS

9.1

GENERAL

9.1.1

Where in hazardous areas the surface temperatures of pipe/equipment exceeds 205°C, the insulation shall apply to all components and the system shall be sealed to inhibit the possible ingress of gases

10

QUALITY CONTROL, CERTIFICATION AND GUARANTEES

10.1

GENERAL

10.1.1

All work is to be carried out in accordance with the insulation Contractors Quality Control Plan which is to be approved by SEIC or their nominated representative.

10.1.2

SEIC or their nominated representative shall have the right to test and inspect all work and materials on site or at the factory, to verify that the requirements of the specifications and codes with regard to manufacture, supply and installation have been met. Such inspection shall not relieve the Contractor from full responsibility for the quality and correctness of the materials and or work.

11

ACOUSTIC INSULATION SPECIFICATION

11.1

SCOPE

11.1.1

This specification covers the minimum requirements for materials and application of acoustic insulation for pipe work and valves with reference to the Acoustic Insulation Schedule. It does not cover acoustic insulation of other equipment (vessels, machinery, etc).

11.2

DESIGN AND MATERIALS

11.2.1

The construction and installation of acoustic pipe insulation shall be generally in accordance with the requirements of ISO 9053 “Acoustics;Materials for Acoustical applications;determinations of airflow resistance and with this specification.

11.2.2

Where lines have combined classes, with the exception of cold insulation, the greater requirement for thickness and cladding of the two shall apply. The mineral wool insulation layer shall be of a semi-rigid or flexible blanket grade only. Where cold insulation is part of a combined requirement, both cold insulation and mineral wool shall be applied. The full cold system shall be applied first, including the vapour barrier, then the acoustic system shall be applied on top.

11.2.3

Acoustic pipe insulation shall be either types A,B, C as defined below: Class A Acoustic insulation shall comprise of an insulating layer of mineral wool, 50 mm thick. The wool shall have a density of between 125-150 kg/m2 and a flow resistivity in the range of 25000-75000 Ns/m4. Flexible noise barrier, min 2.5 mm thick, density min 5 kg/m 2, (by Noisco, Revac or equivalent) Non-metallic top covering. Flanges and valves do not require insulation. Pipe supports shall be insulated down to steel base. Class B Acoustic insulation shall comprise of an insulating layer of mineral wool, 100 mm thick.

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Rev 02

The wool shall have a density of between 125-150 kg/m3 and a flow resistivity in the range of 25000-75000 Ns/m4. Flexible noise barrier, min 2.5 mm thick, density min 5 k/m2 (by Noisco, Revac or equivalent) Non-metallic top covering. Flanges and valves do not require insulation. Pipe supports shall be insulated down to steel base. Class C Acoustic insulation shall comprise of an insulating layer of mineral wool, 100 mm thick. The wool shall have a density of between 125-150 kg/m3 and a flow resistivity in the range of 25000-75000 Ns/m4. Flexible noise barrier, min 2.5 min thick, density min 10 kg/m2. Non-metallic top covering. Flanges and valves do require insulation Pipe supports shall be insulated down to steel base. 11.2.4

Where localised reduction in thickness may occur, due to space constraints, the construction detail for the specified thickness shall be maintained.

11.2.5

All materials shall be suitable for the operating temperatures and for the chemical nature of the environment. They shall conform to the specification for thermal insulation and to any relevant requirements for compatibility and surface spread of flame.

11.2.6

To attain the rated performance of the specified insulation, it is essential that the flexible noise barrier is sealed to prevent noise leakage. This shall be achieved by provision of overlapped joints combined with self-adhesive metal foil tape.

11.2.7

Suitable materials for anti-vibration seals are synthetic rubber and natural rubber. The antivibration seal may also be required to act as a waterproof seal, and the material shall be suitable for this duty. Where these materials are not compatible with the operating temperature, the seal shall be made from compressed porous-layer material, with continuity of vapour barrier maintained as far as practicable.

11.2.8

Rigid spacers, as used in distance rings for thermal insulation, shall not be used in acoustic insulation. Where it is necessary to use spacers, they shall contain a resilient element to reduce the transmission of vibrations from the pipe. Where necessary the resilient element shall have a built-in mechanical stop in the direction normal to the pipe axis in order to limit its mechanical deflection.

11.2.9

With vertical pipes, any supports which carry the weight of the cladding shall contain resilient elements to reduce the transmission of vibrations from the pipe. Where necessary, these resilient elements should contain mechanical stops to limit excess movement.

11.2.10 Resilient elements shall not be loaded to such an extent that their operational range of deflections is exceeded. 11.2.11 For Class C insulation, there shall be vibration isolation between the pipe support and the base in order to achieve the specified acoustic performance. The vibration isolating materials shall be selected for the required mechanical properties as well as the acoustic properties.

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Rev 02

TABLE 1 – WINTERISATION

Pipe Size (Ins NB) Below 1 1 1/2 2 3 4 6 8 10 12 14 and above

Insulation Thickness – mm 25 25 25 25 25 25 25 25 25 none

Notes: 1) 2)

The thicknesses stated are insulation only and exclude any finishing material In accordance with BS 5422

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Rev 02

TABLE 2 INSULATION THICKNESS - FOR HEAT CONSERVATION OFFSHORE INCLUDING ELECTRICALLY TRACED PIPING AND EQUIPMENT FOR USE ON OFFSHORE FACILITIES ONLY. ECONOMIC THICKNESS OF MINERAL FIBRE (mm)

PIPE SIZE (INS NB) ½ ¾ 1 1½ 2 3 4 6 8 10 12 14 16 18 20 24 & above Vessels

50 & BELOW

OPERATING TEMPERATURE (DEG C) 51 – 100 101 –150 151 – 200

25 25 25 25 25 30 30 30 30 30 30 50 50 50 50 50 50

Document No. 1000-S-90-38-S-6003-00

25 25 30 30 30 30 30 40 40 40 40 50 50 50 50 80 80

30 30 30 30 30 30 40 50 50 60 60 60 60 70 70 100 100

30 30 30 30 40 40 50 50 60 70 70 70 70 70 80 110 110

201 – 250

30 30 30 40 40 50 50 60 70 80 80 80 80 90 90 130 130

251 - 300

30 30 30 40 50 50 60 70 80 90 90 90 100 100 110 140 140

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Rev 02

TABLE 3 - INSULATION THICKNESS - FOR HEAT CONSERVATION ONSHORE INCL. ELECTRICALLY TRACED PIPING AND EQUIPMENT FOR USE ON SAKHALIN II PROJECT ONSHORE PROCESSING FACILITY

Pipe Diameter Inches

Fluid Operating Temperature °C 50

100

150

200

250

300

350

1

35

40

40

40

40

40

40

2

35

40

40

50

50

60

60

3

40

40

40

50

60

60

80

4

40

40

50

60

60

80

80

6

40

50

60

60

70

80

90

8

40

50

60

70

80

90

100

10

40

50

70

80

90

100

100

12/14

60

60

70

80

90

100

110

16/18

60

60

80

80

100

110

120

20

60

60

80

90

100

120

150

24 to Flat

60

90

110

120

140

150

150

Notes: 1) 2) 3)

Insulation material mineral wool pipe sections and slab, weather covering is mastic. Thicknesses greater than 50mm are to be applied in multiple layers. For temperatures outside the range given use the next highest temperature to determine the required insulation thickness.

Document No. 1000-S-90-38-S-6003-00

Page 16 of 22


Rev 02

TABLE 4 – NUMBER & THICKNESS OF INSULATION LAYERS (MINERAL WOOL)

Total Thickness (mm)

Number of Layers

Inner Layer (mm)

Middle Layer (mm)

Outer Layer (mm)

25

1

-

-

25

30

1

-

-

30

40

1

-

-

40

50

1

-

-

50

60

2

30

-

30

70

2

30

-

40

80

2

40

-

40

90

2

40

-

40

100

2

50

-

50

120

3

40

40

40

150

3

50

50

50

Document No. 1000-S-90-38-S-6003-00

Page 17 of 22


Rev 02

TABLE 5 – PERSONNEL PROTECTION ECONOMIC THICKNESS OF MINERAL FIBRE (mm)

OPERATING TEMPERATURE (DEG C) Pipe Size (INS N.B.)

205 & Below

206 – 250 (see note 1)

450 (see note 1)

1 and below

Use guards (75mm)

25

40

25

40

25

40

25

50

25

50

25

50

25

50

25

50

25

50

25

50

25

50

25

50

40

65

40

65

40

65

1.5 2 3

Use guards (75mm) Use guards (75mm)

4 6 8


10 12 14


16 18 20


24 FLAT

Use guards (75mm)

550

Use guards (75mm) Use guards (75mm) Use guards (75mm) Use guards (75mm) Use guards (75mm)

Notes: 1. Insulation only to be applied on lines/equipment, which are in hazardous areas, operating within this temperature range.

Document No. 1000-S-90-38-S-6003-00

Page 18 of 22


Rev 02

TABLE 6 – COLD CONSERVATION ECONOMIC THICKNESS OF CELLULAR GLASS (mm)

OPERATING TEMPERATURE (DEG C) PIPE SIZE (INS N.B.)

0 to -20

-21 TO –40

-41 TO –60

-61 TO –80

-81 TO -100

1 & below

40

50

60

65

80

1½

50

50

65

80

80

2

50

50

65

80

80

3

50

60

75

90

100

4

50

60

75

90

100

6

60

70

80

90

100

8

60

70

80

100

110

10

60

70

90

100

110

12

60

70

90

100

120

14

60

70

90

110

120

16

60

70

90

110

120

18

60

80

90

110

120

20

60

80

100

110

130

24

60

80

100

110

130

Flat

60

90

110

130

150

Document No. 1000-S-90-38-S-6003-00

Page 19 of 22


Rev 02

TABLE 7 - INSULATION THICKNESS - FOR COLD CONSERVATION ONSHORE FOR USE ON SAKHALIN II PROJECT ONSHORE PROCESSING FACILITY


Fluid Operating Temperature °C 10 to 0

-20

-40

-60

-80

-100

1

38

38

50

50

65

80

2

38

38

50

65

80

80

3

38

50

65

80

80

90

4

38

50

65

80

90

90

6

38

50

65

80

90

115

8

38

50

65

80

90

115

10

38

50

80

90

115

125

12/14

38

65

80

90

115

125

16/18

38

65

80

115

125

140

20

38

65

90

115

125

140

24 to Flat

38

65

115

125

140

150

Notes: 1) 2) 3)

Insulation material cellular glass pipe sections and slabs. Thicknesses greater than 40mm are to be applied in multiple layers. For temperatures outside the range given use the next highest temperature to determine the required insulation thickness.

Document No. 1000-S-90-38-S-6003-00

Page 20 of 22


Rev 02

TABLE 8 - INSULATION THICKNESS - FOR CONDENSATION CONTROL ONSHORE FOR USE ON SAKHALIN II PROJECT ONSHORE PROCESSING FACILITY


Fluid Operating Temperature °C 10 to 0

-20

-40

-60

-80

-100

-120

1

25

25

40

40

50

65

65

2

25

25

40

50

65

65

75

3

25

40

50

65

65

75

90

4

25

40

50

65

75

75

90

6

25

40

50

65

75

90

100

8

25

40

50

65

75

90

100

10

25

40

65

75

90

100

115

12/14

25

50

65

75

90

100

115

16/18

25

50

65

90

100

100

125

20

25

50

65

90

100

100

125

24 to Flat

38

50

75

90

100

115

125

Notes: 1) 2) 3)

Insulation material wool pipe sections and slab, weather covering is mastic. Thicknesses greater than 40mm are to be applied in multiple layers. For temperatures outside the range given use the next highest temperature to determine the required insulation thickness.

Document No. 1000-S-90-38-S-6003-00

Page 21 of 22


Rev 02

TABLE 9 – HEAT CONSERVATION- ECONOMIC THICKNESS OF FLEXIBLE ELASTOMERIC FOAM (MM)

OPERATING TEMPERATURE (DEG C) PIPE SIZE (INS NB)

0 –50

51 – 100

101 - 115

½

25

25

30

¾

25

25

30

1

25

30

30

1½

25

30

30

2

25

30

30

Document No. 1000-S-90-38-S-6003-00

Page 22 of 22

Piping and Equipment Insulation

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