pidmco hot insulation.pdf

MSE

GENERAL SPECIFICA TION

FOR

HOT THERMAL INSULA TION

C1 FINALISSUE(BASIC) I1pj; 'J w-j,;,. \O oI.-\lQ1-.B1 ISSUED FOR APPROVAL APS VAF/HAF DMO 12/06

A1 ISSUED FOR APPROVAL APS VAF DMO 06/06

REV. DESCRIPTION PREPARED CHECKED APPROVED DATE

OWNER: .. PROJECT:-NATIONALPETROCHEMICALCOMPANY

NF3 PLANT OF BIPCPETROCHEMICALINDUSTRIESDEVELOPMENTMANAGEMENTCOMPANY(PIDMCO) N.P.C.

PIDMCO

r; Q)NCEDOCUMENTNO. OWNER DOCUMENT NO.

t-] NCE JOB NO Type Size GroupDoe.No.

EGS-4.ME.9021211-GN SP 4 EMM 2401namlaran rECNICAS REUNIDAS ASFALTTOUS

Date: 0412007 Rev.: C1 Sheet 1 of 47 Rev.: 2

TABULATION OF REVISED PAGES

Sheet A1 B1 C1 Sheet

1 X X X 51 2 X X X 52 3 X X X 53 4 X X X 54 5 X X X 55 6 X X X 56 7 X X X 57 8 X X X 58 9 X X X 59 10 X X X 60 11 X X X 61 12 X X X 62 13 X X X 63 14 X X X 64 15 X X X 65 16 X X X 66 17 X X X 67 18 X X X 68 19 X X X 69 20 X X X 70 21 X X X 71 22 X X X 72 23 X X X 73 24 X X X 74 25 X X X 75 26 X X X 76 27 X X X 77 28 X X X 78 29 X X X 79 30 X X X 80 31 X X X 81 32 X X X 82 33 X X X 83 34 X X X 84 35 X X X 85 36 X X X 86 37 X X X 87 38 X X X 88 39 X X X 89 40 X X X 90 41 X X X 91 42 X X X 92 43 X X X 93 44 X X X 94 45 X X X 95 46 X X X 96 47 X X X 97 48 98 49 99 50 100

OWNER: NATIONAL PETROCHEMICAL COMPANY PETROCHEMICAL INDUSTRIES DEVELOPMENT MANAGEMENT COMPANY (PIDMCO)

PROJECT:

NF3 PLANT OF BIPC

NCE DOCUMENT NO. OWNER DOCUMENT NO. NCE JOB

NO Type Size Group Doc. No.

1211-GN SP 4 EMM 2401 EGS-4-ME-902

ASFALT TOUS

Date: 04/2007 Rev.: C1 Sheet 2 of 47 Rev.: 2

N.P.C. PIDMCO

TABLE OF CONTENT

Item No. Subject Page No.

1 SCOPE 4

2 REFERNCES 4

3 CODES AND STANDARDS FOR MATERIALS & TESTING 4

4 GENERAL 6

5 MATERIAL 9

6 APPLICATION 13

7 INSULATION THICKNESS TABLES 18

ATTACHMENT A – HOT INSULATION FOR PIPING 22

ATTACHMENT B – HOT INSULATION FOR EQUIPMENT 29

OWNER: NATIONAL PETROCHEMICAL COMPANY PETROCHEMICAL INDUSTRIES DEVELOPMENT MANAGEMENT COMPANY (PIDMCO)

PROJECT:

NF3 PLANT OF BIPC

NCE DOCUMENT NO. OWNER DOCUMENT NO.

NCE JOB NO Type Size Group Doc. No.

1211-GN SP 4 EMM 2401 EGS-4-ME-902

Técnicas Reunidas

ASFALT TOUS

Date: 04/2007 Rev.: C1 Sheet 3 of 47 Rev.: 2

N.P.C. PIDMCO

ISLAMIC REPUBLIC OF IRAN

NCE

TR

ATC

NATIONAL PETROCHEMICAL COMPANY PETROCHEMICAL INDUSTRIES

DEVELOPMENT MANAGEMENT COMPANY

OWNER JOB NO.: NF3- 23- 35- 001 NF3 PLANT OF BIPC OWNER DOC. NO.: EGS-4-ME-902/2

NCE JOB NO.: 1211 REV. NO.: C1

NCE DOC. NO.:1211-GN-SP-4-EMM-2401

GENERAL SPECIFICATION FOR

HOT THERMAL INSULATION SHEET NO.: 4 of 47

N.P.C. PIDMCO

1. SCOPE

This specification covers the material requirements and application procedures for above ground external insulation of piping and equipments of Third NF Plant in Bandar Imam (BIPC) with operation between ambient temperature and 460 oC for the purpose of heat conservation, process control and heat tracing on surfaces operating at a temperature of 21 C and above. Hot insulation may also be required for purposes of personnel protection on surfaces operating at a temperature of 65 oC and above .

2. REFERENCES

Through out this specification the following references are inferred:

1- “Engineering standard for thermal insulations” IPS-E-TP-700 2- “Insulation instruction for piping and instrumentation elements”

NCE-EM-WI-109. 3- “Insulation instruction for equipment” NCE-EM-WI-106. 4- “Engineering standard for external insulation” NPCS-ES-TP-02. 5- “Standard drawing for external insulation” NPCS-SD-TP-03. 6- "Material standard for insulation" NPCS-MS-TP-01.

3. CODES AND STANDARDS FOR MATERIALS & TESTING

3.1 Standards for Material

ASTM: • C592 Mineral fiber blanket insulation and blanket type pipe insulation

(metal mesh covered)(industrial type). • C591 Standard specification for unfaced preformed rigid cellular

polyisocyanurate thermal insulation • C1029 Standard specification for Spray-Applied rigid cellular

polyurethane thermal insulation • C547 Standard specification for mineral fiber pipe insulation • C612 Mineral fiber block and board thermal insulation. • B209 Aluminum and aluminum alloy sheet and plate. • A526 Steel sheet, zinc-coated (galvanized) by the hot-dip process,

commercial quality. • A176 Stainless and heat-resisting chromium steel plate, sheet, and strip. • C449 Mineral fiber hydraulic-setting thermal insulating and finishing

cement. • C795 Standard specification for use in contact with austenitic stainless

steel.


NCE

TR

ATC








N.P.C. PIDMCO

• C553 Standard specification for mineral fiber blanket thermal

insulation for commercial and industrial applications.

3.2 Standards for testing ASTM: • C168 Definitions of terms relating to thermal insulating materials. • C356 Test Method for linear shrinkage of preformed High-temperature

thermal insulation subjected to soaking-heat. • C390 Standard Criteria for Sampling and acceptance of preformed

thermal insulation. • E1225 Standard test method for thermal conductivity of solids by means

of the guarded-comparative longitudinal heat flow technique. • C303 Test method for dimension and density of preformed block-type

thermal insulation. • E84 Test Method for Surface burning characteristics. • C411 Test method for hot-surface performance of high-temperature

thermal insulation. • E34 Standard test methods for chemical analysis of aluminum and

aluminum-base alloys. • E290 Test methods for bend testing of material for ductility. • C302 Test method for density and dimensions of preformed pipe

covering-type thermal insulation. • C167 Standard test methods for thickness and density of blanket or matt

thermal insulation. • C1104 Test method for determining the water vapor sorption of unfaced

mineral fiber insulations. • C356 Test method for linear shrinkage of preformed high temperature

thermal insulation subjected to doaking heat. • C665 Specification for mineral fiber blanket thermal insulation for light

frame construction and manufactured housing • C585 Practice for inner and outer diameters of rigid thermal insulation for

nominal sizes of pipe and tubing (NPS system) • C945 Practice for design considerations and spray application of a rigid

cellular polyurethane insulation on outdoor service vessels. • E96 Standard test method for water vapor transmission of materials • D1621 Standard test method for compressive properties of rigid cellular

plastic • D1623 Standard test method for Tensile and tensile adhesion properties

of rigid cellular plastic • D2482 Standard test method for surface strength of paper. • D2856 Standard test method for open cell content of rigid cellular plastics

by air pycnoemeter • C591 Standard specification for unfaced preformed rigid cellular

polyisocyanurate thermal insulation.


NCE

TR

ATC








N.P.C. PIDMCO

• C165 Standard test method for measuring compressive properties of

thermal insulations. • C335 Standard test method for steady state heat transfer properties of

horizontal pipe insulation.

BS:

• 5970 Thermal insulation of pipework and equipment. • 476 Fire test on building materials and structures. • 2972 Methods of test for thermal insulating materials. •

4. GENERAL

4.1 Type of Insulation

The types of insulation required, are heat conservation and Personnel protection

4.1.1 Heat Conservation

Insulation thickness for piping and equipment shall be as per table 7.1.

4.1.2 Personnel protection

Hot surfaces of over 65° C maximum operating temperature and within 500mm from adjacent normal working area and access way, shall be insulated. Insulation thickness for personnel protection shall be as per table 7.2. , The surface temperature of sheeting shall not exceed 65° C.

4.1.3 Thermal insulation for pipe heat tracing.

Heat traced pipes are provided with a heating zone before installing the insulation. For coiled heating pipes, a heating zone is created by winding aluminum foil around (approx. 0.1mm thick).

4.2 General Requirements for thermal insulation

- The insulation thickness depends on the operating temperature and

where here is an operating temperature of 35°C or more, and heat conservation is essential piping and equipment are provided with thermal insulation.


NCE

TR

ATC








N.P.C. PIDMCO

- All pipes to be insulated are specified in line lists, P & I diagrams. The materials to be used are defined before excavation of the work.

- All surfaces to be insulated must be dry and thoroughly cleaned of

grease, dirt, loose flakes of paint, rust; rolling scale, etc., the primer, where necessary must be completely dry.

- The insulation work is not to be executed until the pressure test has been

completed.

- All leaks are to be eliminated before the insulation work.

- The insulation material must be protected from dirt and moisture before and during insulation. Damp insulation material, even if it is already fitted to the pipe, must be dried out by warming up the pipe or other suitable means of pre-warming.

- Welding work on pipelines, constructions or stress-relief annealed objects

is not permitted for the purpose of insulation. As a matter of principle, fastening means such as strip steel straps, screw fastenings or wire only are to be used.

- Instruments and associated piping subject to operating flow and for

temperature conditions prevailing in the connected piping or equipment shall be insulated to the same requirements as that of piping or equipment.

- Care shall be taken to avoid contact between dissimilar material which case galvanic corrosion.

- Insulation shall be designed to provide an absolute minimum clearance of

25 mm between the outside surface of any insulation finishing material and adjacent surfaces.

- Insulation that needs to be removed for maintenance purposes shall be

fabricated in such a manner, that it is easily removable and can be remounted with a minimum of work.

- External stiffening rings on the vessel and piping shall be insulated with

the same thickness as required for the vessel or piping.

4.3 Extent of Insulation on Piping Systems

- Insulating piping system shall have straight pipe, bends, tees and pipe fittings completely insulated.


NCE

TR

ATC








N.P.C. PIDMCO

- All valves and flanged joints shall be completely insulated only in steam, condensate service, and hot oil lines and in lines, which are traced heated or jacketed to maintain temperatures.

- For bucket and float type traps the inlet piping and trap shall be insulated.

- Insulation on inlet piping to thermostatic and thermodynamic steam traps

shall terminate at approximately 500mm before the trap.

- Insulation shall not be applied to the following unless otherwise specified:

a) Piping which becomes hot intermittently, such as relief valves, vents, steam-out and snuffing steam systems flare and blow down system.

b) Supports for piping, excluding pipe hangers to the extent covered by insulation.

c) Valves, including control valves and flanges in process piping systems. However, personnel protection insulation for these items shall be applied as required.

d) Pipe union fittings e) Expansion joints. f) Sight flow indicators.

4.4 Extent of Insulation on Equipment

- Support skirts of insulated vertical vessel greater than 900mm diameter

shall be insulated both internally and externally for a minimum distance of 600mm below the bottom tangent line.

The insulation shall terminate not less than 300 mm above the support concrete or steel work.

In case of 900mm and less, support skirts shall be insulated externally only.

- Turbines and steam ends of reciprocating pumps shall be insulated for

heat conservation. As given on data sheets.

- Insulation shall not be applied to the following unless otherwise specified:

a) Pumps with operating temperature below 200°C unless pump fluid has a pour point above minimum design ambient temperature.

b) Fans, compressors, blowers or other rotating equipment. c) Internally insulated or refractory lined equipment unless specially

designed for metal temperature control. d) Heads of vessels enclosed by support skirts with vessel diameters

900mm or less. e) Nozzles, manholes, hand holes and flanges of equipment.


NCE

TR

ATC








N.P.C. PIDMCO

f) Surfaces of cooler and condensers. g) Name plates of all equipment items.

5. MATERIAL

5.1 General

- All material shall be of high quality good appearance and shall not have

any deleterious action on the surfaces to be insulated. All insulation and non-metallic accessory materials shall be formulated without the addition of any form of asbestos, minerals.

- Insulation materials shall be chemically inert, non-sulphurous, rot proof,

impervious to hot water and steam, non-injurious to health and non-corrosive to steel. Insulation materials shall have no form of flammable materials attached to them.

- Performed insulating material shall be transported to site in properly

constructed water proof cartons or crates, flexible insulation in polyethylene bags or sacks. Plastic composition shall be packed in weatherproof bags.

5.2 Insulation Material

5.2.1 Hot service

Mineral wool mats with galvanized wire mesh on one side, and/or performed shells. The material shall comply with the following overriding requirements:

a) Optimum service temp. Range, 21°C to 460° C. b) Alkalinity, pH of between 7 and 8 c) Shot content, less than 6% by weight of sheet exceeding 250

microns. Special requirements, in case of insulation on stainless steel parts, should be adopted as follow:

a) Chlorine-free, maximum 14 ppm chloride can be in insulation

in case of contact with stainless steel surfaces. b) Use of mineral wool mats with galvanized wire mesh is not

allowed, shells without mesh shall be used, otherwise the precautions of the manufacturer should be followed. As alternative, the possibility to use mineral wool mats with stainless steel wire mesh shall be evaluated.


NCE

TR

ATC








N.P.C. PIDMCO

c) Spacers shall be made from aluminum to the greatest

possible extent. d) The weather protection jacket may be chosen according to

the environmental conditions.

- The insulation material shall meet the requirements of ASTM C 795.

The following minimum densities & forms of performed mineral fiber can be used:

Item Forms Density

kg/m3 Pipe work Pipe section, either in two halves or in

one piece hinged (for all sizes up to max. commercially available pipe size)

80-100

Pipe work & Heat-traced pipe work

For larger diam., factory cut beveled lags/mattress

100

Heat-traced pipe work

For larger diam., factory cut beveled lags/mattress

100

Equipment & Tanks

Beveled lags /rigid slabs/mattress 100-240

- Thermal conductivity, should be limited to the following

figures, when tested in accordance with BS2972: K value W/mk Mean Temp. ° C Slab /Section Mattresses

50 0.032 0.031 100 0.037 0.037 150 0.043 0.044 200 0.051 0.051 250 0.061 0.061 300 0.072 0.072 400 0.097 0.097

5.3 Jacketing The external jacketing shall be flat or corrugated type, made of galvanized steel (for indoor applications) or aluminum (for out door application) with the thickness as follow:


NCE

TR

ATC








N.P.C. PIDMCO

5.3.1 Steel galvanized (indoor insulation)

The weather protection jacket is to be fabricated from steel sheet galvanized on both sides of quality I (A total of 350g zinc deposited per sqm). Sheet thickness in relation to insulation circumference: Outside diameter of Thickness in mm

Insulation (mm) Flat Corrugated Up to 150 0.6 0.4 (5mm corrugation) 150 to 450 0.8 0.8 (5mm corrugation) Over 450 0.8-1 0.6 (5mm corrugation)

5.3.2 Aluminum (out door insulation)

Aluminum sheeting of the specified thickness shall be 3103 alloy to BS 1470 or 3003 allay to ASTM B209, and H16 hardness. It should be fabricated from flat medium-hard, sea water-resistance, aluminum sheet.

Outside diameter of Thickness in mm

Insulation (mm) Flat Corrugated Up to 150 0.8 0.6 (5mm corrugation) 150 to 450 0.9 0.7 (5mm corrugation) Over 450 1.2 1.0 (5mm corrugation)

- Sheeting shall be supplied in 1000mm wide to the maximum

possible extent in order to minimize on cutting.

5.4 Accessories

5.4.1 Binding Wire Wire shall be galvanized of the following diameter: - Surfaces up to 12” outside diam., 1.2mm - Surface in excess of 12” outside diam., 2.0mm

5.4.2 Bands

For hot-dip zinc coated metal jacketing, Hot-Dip galvanized steel band is required, with, 275g/m2 zinc coating and dimensions of 16x0.5 & 19x0.8mm. For aluminum jacketing stainless steel band with the following dimensions is required:

For Tanks 25x0.5mm For Vessels 20x0.5mm


NCE

TR

ATC








N.P.C. PIDMCO

5.4.3 Rapid grips:

The material the same as above.

5.4.4 Screw, rivets and fasteners

Sheet metal screws for fastening the metal weatherproofing shall be stainless steel. Self-tapping screws, with a minimum diam. of 4.2 mm and length of 13 mm. Rivets (pop type) for the sacrament of metal jacketing in locations where screws are impracticable, shall be stainless steel. The dimension should be 3x6 mm or 4x10 mm.

5.4.5 Coating, sealants, adhesives

5.4.5.1 Sealing elements

a) Permanently plastic sealing tape and synthetic rubber base or equivalent supplied in rolls with dimensions of 20x2 mm.

b) Permanently elastic sealing material on silicon rubber

base or equivalent, to be supplied in small packages such as tubes.

5.4.5.2 Adhesives

Adhesives for sealing elements should be colorless, low-viscosity, precoating containing solvent, supplied in small packages such as bottles, tins, and canisters.

5.4.6 Metallic foils

Aluminum foil for use where specified, shall be a soft temper foil, 0.19mm thick.

5.4.7 Spacers

The spacer for tanks, pipes and apparatus consist of 30x3mm strip rings with associated 30x3mm spacer support, with plastic end caps (contact protection). The length to be cut for the strip steel ring is calculated as follow: Total of the outer diam. of the tank +2x insulate thick multiplied by π. About 40mm is added at both ends, which are later folded. When the strip steel ring consists of several pieces, an extra 80 mm is to be added for each further section.


NCE

TR

ATC








N.P.C. PIDMCO

6. APPLICATION

6.1 Application for Hot Service

6.1.1 General The insulation work shall proceed in an orderly and efficient manner and shall be scheduled so that there will be a minimum of interference with other crafts. Good crafts man ship is to be maintained at all times and the material used shall be as specified. Surfaces to be insulated shall be absolutely dry, thoroughly cleaned of all grease, dirt, loose scale, etc. Insulation for pipe size under 2” shall be insulated by pipe section insulation. Insulation Thickness over 100 mm shall be consist of two or more layers as per table 7.3. Carbon steel and low alloy steel piping and equipment with normal operating temperatures of 125° C and below, shall be protected against corrosion by a primer coat of inorganic zinc primer. In case of equipment this coating shall be provide by equipment fabricator. Stainless steel piping and equipment with normal operating temperature up to 500oC, will be wrapped with 0.19 mm thick aluminum foil with 50 mm overlap at longitudinal and circumferential joints before application of insulation. Insulation @ flanges, valves, etc. shall be terminated from a certain distance from the flange, to permit removal of flange bolls or studs without causing damage to insulation. Void area is to be packed with loose mineral Fiber insulation. Before applying weather proofing, insulation shall be inspected for open joints, voids, cracks and defacing open joins, voids and cracks shall be adequately filled with insulation and defacings made good to the satisfaction of inspector. Valves, flanges, strainers and other fitting requiring quick access, shall be insulated using pre insulating quick removable boxes with latches. Flanges in pipe racks shall not be insulated. Inner layers in multiple layer pipe insulation and insulation on irregular equipment surfaces (where use of bands and seals is impractical) shall be secured, using stainless steel wire. The wire shall be drawn taut to imbed it into the insulation. The ends shall be firmly twisted and the excess cut off. The twisted ends shall be bent over and imbedded into the insulation.


NCE

TR

ATC








N.P.C. PIDMCO

6.1.2 Installing insulation on tanks, apparatus and machinery

6.1.2.1 Thermal and protective insulation for pumps and machinery

The insulation of pumps is achieved with mineral wool, stitched on one side with galvanized wire netting. These are fastened inside a casing, which surrounds the body of the pump. 6.1.2.1.1 Cutting the casing to fit pumps and machinery

Each casing is prepared separately, i.e. the dimensions for the respective casing are taken directly from the pump only after the pump has been installed. The casing must be fabricated so that the individual parts of the casing can be easily removed from the pump again. It should consist of the same material used for covering the insulation of other equipment parts.

6.1.2.1.2 Fastening the casing parts for pumps and

machinery. The fastening of the individual casing parts to each other is achieved by riveted-on bent lever closures. The number of closures depends on the size and construction of the casing.

6.1.2.1.3 Execution for pumps and machinery

When fabricating the casing, make sure that the manometers of the pump are outside and the associated shut-off devices on the inside are easy to reach and operate by fitting a flap. The shut-off devices of draining components must be inside the casing. Here too, a flap must be provided which guarantees speedy operation. Pipes associated with the pump should be inside the casing. Such pipes, for example, are the scavenge pipe of the bearing ring seal with associated cyclones and coolers.

6.1.2.1.4 Fastening insulation matting for pumps and

machinery In the casings sheet metal strips are riveted which are bent at right angles and onto which the cut-to-size insulation mats with the surface protected by the machine wire netting outwards are pressed. Finally, the projecting tips are bent over.


NCE

TR

ATC








N.P.C. PIDMCO

6.1.2.2 Fitting insulation mats for apparatus and tanks The insulation mats are to be cut to suit the circumference of the apparatus and tanks. To determine the sizes, the following rule applies:(Da+Sxf) x pi: Da= Outer tank diameter S= Insulation thickness f= Factor f=1.5 Pi=3.14 The insulation mats are laid on the object to be insulated and joined where they abut by means of mat hooks of 2 mm or 1.2 mm thick galvanized binding wire. In addition, the insulation mats are to be fastened with at least 2 strip steel straps of 20x0.5 or 25x0.5 mm or with binding wire. The strip steel straps must be drawn tight and are to be riveted at the end with hollow rivets. When drawing the binding wire tight, it is important that the ends of the wire loops are wound tightly together, bent over and pressed into the insulation. The insulation mats are to be laid far enough away from flanges; valves or other fittings that the joint bolts can be replaced without being hindered by the adjacent insulation. Spacers are to be provided at intervals of approximately 950 mm and incorporated inside the insulation. In general, it is important that the mats are tightly fitted, a tight joint between ends is guaranteed and sagging or sliding together of the insulation is prevented. Any cavities at the vertical or circumferential seams as well as in the area of the spacers are to be stuffed with loose wool.

6.1.2.3 Fitting insulation protection for apparatus and tanks

The outer cladding consists of aluminum sheets in the specified quality and thickness. The number of sheet widths and their length are to be cut to suit the circumference of the spaces, whereby an overlap of 50 mm is to be provided both for the longitudinal and transverse seams. Each of the overlapping longitudinal and transverse seams is to be beaded after cutting the sheet metal to size. Places where the sheet metal cladding is interrupted for connecting pieces, brackets, supports, boiler shields or similar are to be neatly formed and tightly sealed with press-in end caps of sheet metal or, if necessary, are to be provided and sealed with surrounds and caps. Such places are to be executed so that no moisture can enter the insulation.


NCE

TR

ATC








N.P.C. PIDMCO

Where necessary, expansion joints to compensate the expansion due to heat are to be arranged. The overlaps of the individual sheet widths of segments are to be sealed with an intermediate layer of thermoset tape of similar (permanently plastic sealing tape) 20x2 mm. Where several sheet widths are provisionally fastened to the tank, they are clamped tightly against the object with special tensioners and galvanized strip steel straps before screwing together. It is important that there is an overlap of 50mm at each joint. The overlap seams are then screwed together at intervals of approximately 150 mm with sheet metal screws. The strip steel strap is cut exactly to length and holes of 5 mm diameter are punched into it at intervals of approximately 250 mm. The ends to be folded are provided with holes through which M8 screws can later be screwed. After punching and drilling, the steel strips are bent to the appropriate diameter in a rounding machine. The spacer supports are similarly fabricated from 30x3 mm strip steel. The height of the spacer supports depends on the respective insulation thickness. The folded part is approximately 30 mm wide. In the center of the folded section is similarly to be provided a punched hole of 5 mm diameter. The pre-fabricated spacer supports are then riveted tightly to the strip steel.

6.1.3 Installing insulation for pipe and fitting

Preformed covering up to the thickness as specified, shall be used. Where preformed pipe covering is not available in a particular size, blanket type insulation should be installed. Install blanket insulation with lath side outward and all joint butted together. Fasten blankets with metal bands. Spacers are to be used as supporting structure. Supporting structures are necessary for pipelines with an insulation circumference of 0.6 meters. For pipes with heat tracing, under no circumstances may wool be allowed between the product and heat-tracing pipe, since this would considerably impair the transfer of heat. (Fig.A12) For horizontal pipes, the longitudinal seams must be in the bottom half of the circumference. The longitudinal and circumferential seams shall be tighted closely with galvanized binding wire (parag. 5.4.1) or held together with large steel hooks. Any cavities are to be stuffed with loose matting.


NCE

TR

ATC








N.P.C. PIDMCO

6.1.4 Weather proofing jackets

Metal weatherproofing shall be applied over insulation banded with all caps secured with sheet metal screw maximum spacing of screws shall be 150 mm. Vessel head and storage tank roof laps shall be provided with 2 head of caulking. Pipe jacketing shall be lapped to a minimum of 50mm on all seams, and shall be fastened in longitudinal seams only. In all cases, the overlap is to be forward so that no moisture can penetrate the joints.


NCE

TR

ATC








N.P.C. PIDMCO

7. INSULATION THICKNESS TABLES

7.1 Insulation Thickness for heat conservation

Insulation Thickness For: Hot Insulation

Material Type: Mineral Wool Thermal Insulation Thickness

NPS 55 To

100 101 To

150 151 To

200 201 To

250 251 To

300 301 To

350 351 To

400 401 To

450 451 To

500 1/2 30 30 30 30 40 40 50 60 70 3/4 30 30 30 30 40 50 50 60 70

1 30 30 30 30 40 50 60 70 80 1 1/2 30 30 30 30 40 50 60 70 80

Pipe section

2 30 30 30 40 40 50 60 70 90 3 30 30 30 40 50 70 80 100 120 4 30 30 40 40 60 70 90 110 130 6 30 30 40 50 60 80 90 110 140 8 30 30 40 50 60 80 100 120 140

10 30 30 40 50 60 80 100 120 150 12 30 30 40 50 70 80 100 130 150 14 30 30 40 50 70 80 110 130 160 16 30 30 40 50 70 90 110 130 160 18 30 30 40 50 70 90 110 130 160 20 30 30 40 50 70 90 110 140 170 24 30 30 40 50 70 90 110 140 170 28 30 30 40 50 70 90 110 140 170 32 30 30 40 50 70 90 120 140 180 36 30 30 40 50 70 90 120 150 180

Blanket

40 30 30 40 50 70 90 120 150 180 Board Flat 30 30 40 50 60 80 100 130 150


NCE

TR

ATC








N.P.C. PIDMCO

7.2 Personnel protection insulation thickness for piping and equipment

Insulation Thickness For: Hot Insulation Material Type: Mineral Wool

Thermal Insulation Thickness

NPS 55 To 100

101 To 150

151 To 200

201 To 250

251 To 300

301 To 350

351 To 400

401 To 450

451 To 500

1/2 30 30 30 30 30 40 50 50 60 3/4 30 30 30 30 30 40 50 60 60 1 30 30 30 30 40 40 50 60 70

1 1/2 30 30 30 30 40 50 50 60 70

Pipe section

2 30 30 30 30 40 50 60 70 80 3 30 30 30 40 50 60 70 90 100 4 30 30 30 40 50 60 80 90 110 6 30 30 30 40 50 70 80 100 120 8 30 30 30 40 50 70 90 100 120

10 30 30 30 40 60 70 90 110 130 12 30 30 30 40 60 70 90 110 130 14 30 30 30 40 60 70 90 110 140 16 30 30 30 40 60 70 90 110 140 18 30 30 30 40 60 70 90 120 140 20 30 30 30 40 60 80 90 120 140 24 30 30 30 40 60 80 100 120 150 28 30 30 30 40 60 80 100 120 150 32 30 30 30 40 60 80 100 120 150 36 30 30 30 50 60 80 100 120 150

Blanket

40 30 30 40 50 60 80 100 130 150 Board Flat 30 30 40 40 50 70 90 110 130

Remarks: For multi-layer insulation refer to table. 7.3 Note:

1) All Thicknesses are in millimeter


NCE

TR

ATC








N.P.C. PIDMCO

7.3 Multi-layer schedule (for thermal insulation) In cases where the minimum required insulation thickness is higher than the available, insulation thicknesses more than one layer should be used. For this purpose the following table is a guideline for selecting multi-layer system.

Required

Thickness of Insulation (mm)

Inner Layer Thickness

Middle Layer Thickness (mm)

Outer Layer Thickness (mm)

30 30 None None

40 40 None None

50 50 None None

60 60 None None

70 70 None None

80 80 None None

90 90 None None

100 100 None None

120 60 None 60

140 70 None 70

160 80 None 80

180 100 None 80

200 80 70 50

220 80 80 60

240 100 80 60

260 100 80 80


NCE

TR

ATC








N.P.C. PIDMCO

ATTACHMENT – A


NCE

TR

ATC








N.P.C. PIDMCO

ATTACHMENT – A

HOT INSULATION FOR PIPING

• Fig. A1: “Sheeting Details Pipe Insulation”

• Fig. A2: “Expansion Joint for Pipe Sheeting”

• Fig. A3: “Detail Rain Cap At Supports”

• Fig. A4: “Detail Elbow Segment (Long Radius) 3” and Above”

• Fig. A5: “Bends R>1.5D”

• Fig. A6: “Sheeting Detail For Fittings”

• Fig. A7: “Enclosures Valve 11/2” & Smaller”

• Fig. A8: “Flanged Valves & Control Valves Enclosures”

• Fig. A9: “End Caps For Flange And Valve Enclosures”

• Fig. A10: “Sealing Plates Metal Jacketing”

• Fig. A11: “Electrical Heat Tracing”

• Fig. A12: “Heat Tracing Insulation Detail”


NCE

TR

ATC








N.P.C. PIDMCO

Fig.A1 : “Sheeting Details Pipe Insulation”


NCE

TR

ATC








N.P.C. PIDMCO

Fig.A2 : “Expansion Joint for Pipe Sheeting”


NCE

TR

ATC








N.P.C. PIDMCO

Fig.A3 : “Detail Rain Cap At Supports”


NCE

TR

ATC








N.P.C. PIDMCO

Fig.A4: “ Detail Elbow Segment (Long Radius) 3” and Above”


NCE

TR

ATC








N.P.C. PIDMCO

Fig. A5 : “Bends R>1.5D”


NCE

TR

ATC








N.P.C. PIDMCO

ATTACHMENT – B


NCE

TR

ATC








N.P.C. PIDMCO

ATTACHMENT – B

HOT INSULATION FOR EQUIPMENT

• Fig. B1: “General Arrangement of Blanket insulation for vertical vessels” • Fig. B2 : “General Arrangement of Block insulation for vertical vessels” • Fig. B3: “Support for insulation” • Fig. B4: “Expansion Joint” • Fig. B5: “Horizontal vessels and exchangers with blanket insulation and

metal jacketing” • Fig. B6: “Horizontal vessels and exchangers with block insulation and

metal jacketing” • Fig. B7: “Flashing at nozzles or other projections with metal jacketing” • Fig. B8: “Insulation support pins for enclosures” • Fig. B9: “Pump insulation detail” • Fig. B10: “Insulation detail level gauge” • Fig. B11: “Sealing plate around manholes on vertical equipment” • Fig. B12: “Caps for vertical equipment” • Fig. B13: “Endcaps for equipment when Dia. >1meter”


NCE

TR

ATC








N.P.C. PIDMCO

Fig. B1 : “General Arrangement of Blanket insulation for vertical vessels”


NCE

TR

ATC








N.P.C. PIDMCO

Fig. B2 : “General Arrangement of Block insulation for vertical vessels”


NCE

TR

ATC








N.P.C. PIDMCO

Fig. B3 : “Support for insulation”


NCE

TR

ATC








N.P.C. PIDMCO

Fig.B4: “Expansion Joint”


NCE

TR

ATC








N.P.C. PIDMCO

Fig.B5: “Horizontal vessels and exchangers with blanket insulation and metal jacketing”


NCE

TR

ATC








N.P.C. PIDMCO

Fig.B6: “Horizontal vessels andexchangers with block insulation and metal jacketing”


NCE

TR

ATC








N.P.C. PIDMCO

Fig.B7: “Flashing at nozzles or other projections with metal jacketing”


NCE

TR

ATC








N.P.C. PIDMCO

Fig.B8: “Insulation support pins for enclosures”


NCE

TR

ATC








N.P.C. PIDMCO

Fig.B9: “Pump insulation detail”


NCE

TR

ATC








N.P.C. PIDMCO

Fig.B10 : “Insulation detail level gauge”


NCE

TR

ATC








N.P.C. PIDMCO

Fig.B11 :”Sealing plate around manholes on vertical equipment”


NCE

TR

ATC








N.P.C. PIDMCO

Fig.B12 ;”Caps for vertical equipment”


NCE

TR

ATC








N.P.C. PIDMCO

Fig.B13: “Endcaps for equipment when Dia.>1meter”


NCE

TR

ATC








N.P.C. PIDMCO

Fig.B9: “Pump insulation detail”


NCE

TR

ATC








N.P.C. PIDMCO

Fig.B10 : “Insulation detail level gauge”


NCE

TR

ATC








N.P.C. PIDMCO

Fig.B11 :”Sealing plate around manholes on vertical equipment”


NCE

TR

ATC








N.P.C. PIDMCO

Fig.B12 ;”Caps for vertical equipment”


NCE

TR

ATC








N.P.C. PIDMCO

Fig.B13: “Endcaps for equipment when Dia.>1meter”

pidmco hot insulation.pdf

Documents

c1 nce

nf3 plant of bipc nce

t nce job

hot thermal insulation

nf3 plant of bipc owner

insulation instruction

equipment nceem

owner documentno