3550 8440 SP 0011 Rev D5.Markup Thanh Thao

8/13/2019 3550 8440 SP 0011 Rev D5.Markup Thanh Thao

1/6


2/6

PASSIVE FIREPROTECTION &EXTERNALFIREPROOFING OFEQUIPMENTSUPPORTS

FOSTER WHEELER ENERGY LTDPROJECT SPECIFICATIONEQUIPMENT ENGINEERING

3550-8440-SP-0011PAGE 2 OF 6REV D5

3550-8440-SP-0011 rev D5.markup.docx DSN 280

1.0 SCOPE1.1 This specification defines the requirements for exterior fireproofing of equipment supports

including fired heaters, towers, vessels, pipe racks and structural steel. This standardshall cover structures in warehouses and packaging buildings, but is not suitable forfireproofing systems designed for interior use or for architecturally designed buildings.Fireproofing to instrument cable ducts and trays is addressed in document3550-8550-SP-0011

1.2 Fireproofing material and application methods are included in this standard. Selection offireproofing material shall be dependent on specific job requirements, circumstances andenvironments.

1.3 Local codes or standards shall be used when they require greater thicknesses or longerfire ratings than found herein.

1.4 This standard shall be read in conjunction with Project Specific Standard3550-8310-SP-0011 Specification for Concrete Fire Protection.

1.5 EPC contractor shall review with Employer the specific requirements of Insurer toestablish that the Insurance company requirements are addressed in project specificstandards.

1.6 The fireproofing for emergency (ESD and EDP) valve actuator within Fire PotentialArea shall be provided. If located outside of fire potential area, no fireproofing isrequired.Additionally, if emergency valve is of fail-safe design, fireproofing is not provided

2.0 REFERENCE STANDARDS

2.1 API Documents

2.1.1 API RP 2001 Fire protection in RefineriesEighth Edition

2.1.2 API Pub 2218 Fireproofing Practices in Petroleum & Petrochemical ProcessingEquipmentSecond Edition

2.1.3 API Pub 2510 A Fire Protection Consideration for Design and Operation of LiquefiedPetroleum Gas Storage FacilitiesSecond Edition

2.2 Other Standards

2.2.1 BS 476 Fire Tests on Building Material and Structures, Part 21

2.2.2 UL 1709 Rapid Rise Fire Tests of Protective Material for Structural Steel

2.3 Project Specific Specifications

2.3.1 3550-8440-SP-0008 Protective Paint and Coatings


3/6



3550-8440-SP-0011PAGE 3 OF 6REV D5


2.3.2 3550-8310-SP-0011 Specification for Concrete Fire Protection2.3.3 3550-8550-SP-0010 Instrument Cable Specification

2.3.4 3550-8550-SP-0011 Instrument Installation Standard

3.0 DESIGN

3.1 Purpose and extent of fireproofing

3.1.1 The primary purpose of fireproofing shall be to minimise the possibility of collapse ofsteelwork supporting fire potential equipment and piping containing flammable or toxicmaterials, the release of which would add materially to the intensity of a fire and to the

problems and hazards of fire fighting and personal injury.

3.1.2 Fireproofing of selected equipment may also be specified in order to satisfy requirementsfor emergency relief capacity.

3.1.3 No extension of fireproofing shall be made with the object of reducing the time required tobring a unit back on stream after a fire.

3.1.4 The degree of fireproofing shall provide a 2 hour hydrocarbon fire rating in accordancewith BS 476 Fire Tests on Building Material and Structures, Part 21.

3.1.5 Following definitions for fire potential equipment shall be used within this document;- Columns/Drums/Heat Exchangers : Holding LPG, Holding flammable liquids (flash pointbelow 37.8oC), Holding flammable or combustible liquids exceeding their auto ignition

temperature.- Heaters with integral stacks handling combustible or flammable liquids (not gas)- Air Fin Coolers : Handling LPG- Pumps : Handling LPG, Handling flammable liquids (flash point below 37.8 oC), Handlingcombustible liquids (flash point above 37.8oC), Handling flammable, combustible liquidsexceeding their auto ignition temperature or temperature of 260oC or higher, Handlingflammable liquids with pressure higher than 500 psig- Compressor : Handling flammable gases

3.1.6 Supporting structures for furnaces from the column base to the floor level, including allhorizontal supports at floor level shall be considered as items covered by paragraph 3.1.1

3.1.7 Steel structures supporting equipment in fire potential areas shall be fireproofed up to thebeams transmitting the equipment load to the support structure. These steel structuresshall include all stanchions, equipment supporting beams and also all structural memberswhich reduce the effective buckling length of stanchions.

3.1.8 Steel structures supporting air cooled heat exchangers shall be fireproofed from grade orelevated level up to and including the supports to the tube bundle(s).

3.1.9 In all process/offsite fire potential areas; pipe racks and interconnecting pipe ways whichsupport piping only, shall be fireproofed from their bases up to and including the first levelpipe support beam leaving the upper most surface of the top flange bare. For multi-levelpipe racks, fireproofing shall extend up to and including the beam which is nearest to a 9melevation, leaving the upper most surface of the top of the flange bare. Structural steelsupports of main pipe racks outside process areas shall be fireproofed from their bases upto and including the pipe supporting cross beams.


4/6



3550-8440-SP-0011PAGE 4 OF 6REV D5


3.1.10 Piping supported from spring hangers or rods shall be subject to special consideration infire critical areas of pipe hangers. Fireproofing shall be by the use of heat insulatingmaterials if considered necessary.

3.1.11 Supports for fire potential equipment shall be fireproofed up to the point/level of support.Supports for non-fire potential Equipment within fire potential areas shall be fireproofed upto 9 metres above grade.

3.1.12 Steel saddle supports for vessel drums and exchangers shall be fireproofed when theyexceed 600 mm in height measured at the lowest support point.

3.1.13 Vessel support skirts 1220 mm outside diameter and greater shall be fireproofed overboth internal (in the case of potential leaks from flanges) and external surfaces. Skirts oflesser diameters need not be internally fireproofed.

3.1.14 The extent of fireproofing of instrument cable tray structures and instrument conduitswithin fire potential areas shall be in accordance with Project Specific Specifications aslisted in paragraph 2.3 Instrument Cable Specification. The Instrument/ Electricalsections shall be consulted to determine support and bracket requirements.

3.1.15 Fireproofed electrical power cables shall be considered with this Standard.

3.2 Fireproofing Systems

3.2.1 Fireproofing systems shall be selected to satisfy specific job requirements from thematerials listed in Table 1 and further defined in Section 6.

3.2.2 Thicknesses as quoted shall be regarded as a minimum requirement, to obtain a 2 hourhydrocarbon fire rating from a fire test in accordance with BS 476: Part 21.

TABLE 1 Fireproofing System

SYSTEM MATERIAL

NOMINAL

THICKNESS

mm

MASS

Cementitious Cement - Gunned (Note 1)

Cement - Poured

Vermiculite Cement - Sprayed

50

50

46

115-125

115-125

37

Mastic Intumescent Coating - Sprayed (Note 2)

Heat Subliming Mastic -Sprayed (Note 2)

14

17

13

17

Notes

1. Includes Gunite, Sprayed Concrete, Birdseye and other forms of concrete

applied by pneumatic pressure.


5/6



3550-8440-SP-0011PAGE 5 OF 6REV D5


2. Requires mechanical and weatherproof protections where applied in out-door situations.

3.3 Materials

3.3.1 The use of fireproofing materials containing ASBESTOS in any form is not permitted.

3.3.2 Cementitious materials mixed to form concrete, gunite and vermiculite cement shall be asdefined in Project specific Std 3550-8310-SP-0011 Specification for Concrete FireProtection.

3.3.3 Sprayed intumescent mastic consists of a two pack epoxy composite material withinsoluble blowing agent and inorganic fibre reinforcement.

3.3.4 Heat subliming mastic consists of subliming compounds, water suspending agents, fillers,intumescents, inert fibres and emulsifiers to give a ready mixed mastic compound.

3.3.5 Firebatts consist of non-combustible mineral rock fibre with minimal binder content,externally protected with either galvanised or aluminised mild steel sheeting or stainlesssteel sheeting

3.4 Application

3.4.1 Surfaces to be fireproofed shall be clean, dry and free from loose scale. It shall be theapplicator's responsibility to remove loosely adhering scale and dirt before applyingfireproofing material.

3.4.2 Specified protection coating systems as required by Project specific Std.3550-8440-SP-0008 Protective Painting Systems shall be in an acceptable state of repair prior to theapplication of fireproofing material.

3.4.3 The applicator shall be responsible for ensuring that ambient temperature and humidityconditions at the time of application are within material manufacturer's specifiedrequirements and satisfy the requirements of Project specific Std 3550-8310-SP-0011Specification for Concrete Fire Protection.

3.4.4 Surfaces adjacent to those requiring fireproofing shall be protected by tarpaulin orequivalent screening to shield them from overspray or spatter.

3.4.5 The selected fireproofing system shall be installed after steel structures are in place butbefore piping, equipment and similar equipment are installed. Other construction

operations shall be restricted until fireproofing material is dry enough or sufficiently curedto avoid mechanical damage.

3.4.6 At positions where fireproofing terminates and steel members continue withoutfireproofing, water shedding and sealing arrangements shall be introduced by theapplicator.

3.4.7 Cementitious fireproofing systems shall be installed in accordance with Project specific Std3550-8310-SP-0011 Specification for Concrete Fire Protection.

3.4.8 Mastic fireproofing systems shall be spray applied by specialist applicators employingstaff fully trained and qualified by prior experience.

3.4.9 Applicators shall use the fireproofing material manufacturers application instructions andall recommended spraying equipment and nozzles.


6/6



3550-8440-SP-0011PAGE 6 OF 6REV D5


3.4.10 Thermal insulation fireproofing systems shall be manually applied by trained applicatorsover prepared surfaces to a towelled finish.

3.4.11 Fixing pins or studs shall be attached (by an agreed method) to surfaces requiringfireproofing and used to support the rock fibre batts. Stainless steel lacing wire shall becriss-crossed over the face of the batts and looped around the protruding ends of thefixing pins. Spring fasteners or lock washers shall be pressed over the ends of the fixingpins to secure both fire batts and lacing wire into position.

4.0 QUALITY CONTROL AND INSPECTION

4.1 Material manufacturers shall be able to demonstrate control of material quality throughoutall phases of manufacture.

4.2 Applicators shall be able to demonstrate quality control of workmanship including mixing,application, surface finish and applied thicknesses.

4.3 During application, there shall be frequent random thickness measurements of allcoverings and coatings to assure adequate applied thicknesses. The final thicknessesshall be measured using an approved thickness gauge, dependent upon the nature offireproofing material, following a minimum 48 hours curing and drying time.

4.4 The fireproofing application shall be subject to rejection if the average thickness over thewhole application is less than the nominal thickness required by design or any individualthickness measurement is shown to be less than 95 per cent of the required nominalthickness.