Analyser Shelters & Analyser Local Panel Specification

 

Technical Standard - TS

Title:

Analyser Shelters & Analyser Local Panels Specification

Reference:

GTL-64-04

Revision:

4

Effective date: Total pages:

20/08/2020 22

Revision date:

20/08/2023

Classification:

Public

Custodian:

Signature

Date

Projects Services Manager- Hussain Abdulla H A AlSada

Digital signature verified

20/08/2020

Digital signature verified

20/08/2020

Approved by: Chief Engineering and Projects Officer- Ali Abdulrahman  A A Al-Mohannadi Al-Mohannadi

Endorsed By

Sr. No.

Endorsed By

Endorsed Date

1

Head of Quality- Mooza Abdulla Mubarak A Ali Lead Discipline Engineering- Khemais Besbes

20/08/2020

2

20/08/2020

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Reviewed By

Sr. No.

Reviewed By

Position

Reviewed Date

Comments

1

Melvin Bryan Arellano Ebreo

Chief Se Secretary

11/08/2020

2

Khemais Besbes

11/08/2020

3

Hussain Abdulla H A  Al-Sada Ali Khedher Omer Farooq

Lead Discipline Engineering Projects Services Manager  Projects Manager Integrated Management Specialist Chief Se Secretary

[Action Taken - Review Started]This Technical Standard has been updated as per the new Technical Standard Template only. No revision to its contents. Please review and accept. Currently, the CDMS document Viewer is not working properly. Kindly download the softcopy if you want to view the document on its original format. [Action Ta Taken - Approved]

11/08/2020

[Action Ta Taken - Approved]

12/08/2020 16/08/2020

[Action Taken - Approved] [Action Ta Taken - Approved]

16/08/2020

[Action Taken - Review Completed]No comment.

4 5

6

Melvin Bryan Arellano Ebreo

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Analyser Shelters & Analyser Local Panels Specification

Reference: Classification: Revision: Page:

GTL-64-04 Public 04 1 of 22

Content Page 1

Supporti Supporting ng Clau Clauses ses ............ ................... ............. ............ ............ ............. ............. ............ ............. ............. ............ ............ ............. ............. ............ ............ ............. .........2 ..2

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Introduct Introduction ion ............. ................... ............ ............. ............. ............ ............ ............. ............. ............ ............. ............. ............ ............ ............. ............. ............ ............ ............. .........6 ..6

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Analyser Analyser She Shelter lters s & Analyser Lo Local cal Panels Panels Specificat Specification ion ............. ................... ............ ............. ............. ............ ............ ............. .......6 6

4 5

Roles Roles and Resp Responsi onsibilit bilities.... ies........... ............. ............ ............ ............. ............. ............ ............. ............. ............ ............ ............. ............. ............ ............ ...........2 .....21 1 Authoris Authorisatio ation............ n.................. ............ ............. ............. ............ ............ ............. ............. ............ ............. ............. ............ ............ ............. ............. ............ ............. ............ .....22 22

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Revisions Revisions ............. ................... ............ ............ ............. ............. ............ ............. ............. ............ ............ ............. ............. ............ ............. ............. ............ ............ ............. ..........22 ...22

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Reference: Classification: Revision: Page:

Analyser Shelters & Analyser Local Panels Specification

GTL-64-04 Public 04 2 of 22

1 Supp Suppor orti ting ng Cl Clau ause ses s 1.1 1.1.1

Scope Purpose

This standard covers the minimum technical requirements for the engineering and design of the  Analyser Shelters Shelters & Analyser Analyser Local Panels Panels for the ORYX ORYX GTL plant. plant.

1.1 .1.2 .2

Appli pplic cabili bility ty

This document shall apply throughout ORYX GTL.

1. 1.2 2

No Norm rmat ativ ive/ e/ IInf nfor orma mati tive ve  References

Parties using this document shall apply the most recent edition of the documents listed herein.

1.2.1 Normative International Codes: Code/Standard No/Rev/Date

Title of Document

 ASME B1.20.1 B1.20.1 2013

Pipe Threads, Threads, General General Purpose (Inch)

 ASME B16.5 2013 IEC 60079-1 2014 Edition 7.0 IEC 60079-2 2014 Edition 6.0 IEC 60079-7 2015 Edition 5.0 IEC 60079-11 2011 Edition 6.0 IEC 60079-15 2010 Edition 4.0 IEC 60 60529 20 2013

Pipe Flanges and Flanged Fittings NPS 1/2 Through NPS 24 Metric/Inch Standard. Explosive atmospheres - Part 1: Equipment protection by flameproof  enclosures “d” Explosive atmospheres – Part 2: Equipment protection by pressurized enclosure “p” Explosive atmospheres - Part 7: Equipment protection by increased safety "e" Explosive atmospheres – Part 11: Equipment protection by intrinsic safety "i" Explosive atmospheres – Part 15: Equipment protection by type of  protection "n" Degree o off P Prrotection Pr Provided by by En Enclosure ((IIP Co Code)

BS EN 61000-6-4+A1, 2007 BS EN 610 61000-6 00-6-2, -2, 2005

Electromagnetic Compatibility (EMC): Generic standards-Emission standard for Industrial environments Electrom Electromagn agnetic etic Compatib Compatibility ility (EMC (EMC): ): Gene Generic ric standar standards-Im ds-Immun munity ity for Industrial environments Power Cables with extruded insulation and their accessories for rated voltages from 1 kV (Um = 1,2 kV) up to 30 kV (Um = 36 kV) – Part 1: Cables for rated voltages of 1 kV (Um = 1,2 kV) and 3 kV (Um = 3,6 kV) Multi-element metallic cables used in analogue and digital communication and control - Part 7: Sectional specification for instrumentation and control cables Elec Electr trom omag agne neti tic c comp compat atib ibil ilit ity y (E (EMC MC)) – Part Part 44-2: 2: Te Test stin ing g an and d measurement techniques – Electrostatic discharge immunity test Electromagnetic compatibility (EMC) – Part 4-3: Testing and measurement techniques – Radiated, radio-frequency, electromagnetic field immunity test

IEC 60502-1 , 2009 Edition 2.1 BS EN 50288-7, 2005 Incorporating corrigendum July 2009 IEC IEC 61 6100 0000-44-2, 2, 20 2008 08 IEC 61000-4-3, 2010 Edition 3.2

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Analyser Shelters & Analyser Local Panels Specification

Reference: Classification: Revision: Page:

GTL-64-04 Public 04 3 of 22

IEC 61000-4-4, 2012 Edition 3.0 IEC 61000-4-5, 2014 Edition 3.0 IEC 61000-4-6, 2013 Edition 4.0

Electromagnetic compatibility (EMC) – Part 4-4: Testing and measurement measurem ent techniques – Electrical fast transient/ burst immunity test Electromagnetic compatibility (EMC) – Part 4-5: Testing and measurement techniques – Surge immunity test - Edition 3.0 Electromagnetic compatibility (EMC) – Part 4-6: Testing and measurement techniques – Immunity to conducted disturbances, induced by radio-frequency fields - Edition 4.0

ISA2004) 18.1, 1979 (R NFPA 101 2015 NFPA FPA 496- 20 201 17

 Annunciatorr sequences  Annunciato sequences and Specifications Specifications

OSHA 29 CFR 1910.1000

Life Safety Code St Sta andard fo forr Pur urg ged and Pressu essuri rize zed d Enclo closu surres fo forr Ele lect ctrric ica al Equipment  Air Contaminants Contaminants

Reference Standards: GTL-01-01 GTL-61-01 GTL 62-02 GTL 62-04 GTL 63-02 GTL 64-01 GTL-64-03 GTL 64-05 GTL-64-06 GTL 81-01

Site Conditions General Instrumentation Specification Distributed Control System (DCS) Technical Specification Fire and Gas System (FGS) Technical Specification Instrument Cable Specification Instrument Installation Specification Inspection and Testing of Electronic Control Systems Analyser Sampling Systems Specification Control and Marshalling Cabinet Specification Protective Coatings Specification

Reference document: QGTL QG TL11-IN INSS-63 63-0 -000 0001 01

In Inst stru rume ment nt Ea Eart rthi hing ng Ph Phil ilos osop ophy hy

1.2.2 Informative Should there be any conflict between this Technical Standard and the below codes/standards/ regulations/specifications and requirements, the more stringent shall apply. The User shall inform ORYX GTL of any conflict:         

This Technical Standard Qatar statutory law and regulations RLIC Regulations ORYX GTL HSE Regulations OSHA United States Occupational Safety & Health Administration Regulations  Approved technical exception/ exception/ deviation deviation list (as applicable) applicable)  Amendments  Amendme nts to National/ National/ International International codes and standards standards National/ International codes and standards Qatar Construction Specifications 2014

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Analyser Shelters & Analyser Local Panels Specification

1.3

GTL-64-04 Public 04 4 of 22

Definitions Item

Definition

CONTRA NTRAC CTOR

Shall mean a an ny pe perso son n or or pe perso son ns, fir firm, pa partn tne ersh shiip, cor corp poratio tion or or combination thereof (including its Subcontractors) employed for the performance of services by ORYX GTL

VENDOR

Shall mean any person, firm or company having a purchase order for the performance of any item of work.

OWNER

Shall mean the responsible ORYX GTL representative for which services are being rendered by the CONTRACTOR

Plant

Shall mean ORYX GTL Gas to Liquids Facility

Shall

Refers to a requirement

Should

Refers to a recommendation

May

Refers to one acceptable course of action.

1. 1.4 4

Ab Abbr brev evia iati tion ons s an and dA Acr cron onym yms s Abbreviation/

Expanded Name

Acronym  ANSI

American National National Standards Standards Institute

 ASME

American Society Society of Mechanical Mechanical Engineers Engineers

 ATEX

ATmosphere ATmosphere EXplosive

CPU

Central Processing Unit

CCR

Central Control Room

DCS

Distributed Control System

EMC

Electromagnetic Compatibility

EMI

Electro Magnetic Interference

ESD FGS

Emergency Shutdown Fire and Gas System

GC

Gas Chromatograph

IEC

International Electrotechnical Commission

IP

Ingress Protection

I/O

Input/Output

IS

Intrinsically Safe

LEL

Lower Explosive Limit

MTBF

Mean Time Between Failure

MTTR

Mean Time To Repair  

NACE

National Association of Corrosion Engineers

NPS

Nominal Pipe Size

NPT

National Pipe Thread

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Analyser Shelters & Analyser Local Panels Specification

P&ID

Piping and Instrumentation Diagram

PLC

Programmable Logic Controller  

QGTL

Qatar Gas to Liquids

RIB

Remote Instrument Building

SIL

Safety Integrity Level

SIS

Safety Instrumented System

SVAC

Shelter Ventilation and Air Conditioning

SWA

Steel Wire Armoured

TFER

Tank Farm Equipment Room

UPS

Un-interruptible Power Supply

VDU

Visual Display Unit

1. 1.5 5

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GTL-64-04 Public 04 5 of 22

Im Impl plem emen enta tati tion on Da Date te

The implementation date is July 2020.

1. 1.6 6

Pr Proc oces ess s for for Mo Moni nito tori ring ng

The Custodian of the Document along with other Users within ORYX GTL shall monitor compliance with the requirements of this Standard. Any revision to the Standard shall be processed in accordance with ORYX GTL- IMS Procedure for “Update Engineering Technical Standards”.

1. 1.7 7

Re Rela late ted/ d/ S Sup uppo port rtin ing g Do Docu cume ment nts s

 Appendix 1 : Typical Analyser Analyser Installations Installations

1.8

Key Words

Shelter, local panel, sampling, ventilation.

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Analyser Shelters & Analyser Local Panels Specification

Reference: Classification: Revision: Page:

GTL-64-04 Public 04 6 of 22

2 Introduction The items described in this specification are for housing process analysers and associated systems for ORYX GTL plant. The housing may be analyser local panel or analyser shelter. The analyser shelter is defined as an enclosed structure with controlled environment in which one or more analysers and associated equipment equipment are installed, with sufficient space to allow maintenance maintenance access to the analysers with the door(s) closed.

3 Analyser Analyser Shel Shelters ters & Analyser Analyser Local Panel Panels s Sp Specifi ecificatio cation n 3. 3.1 1

An Anal alys yser er In Inst stal alla lati tion on

3.1.1

General

The installation method required for individual analysers, shall be determined during detailed engineering and shall be subject to OWNER approval.  Analyser shelter and local analyser panel shall be located providing good accessibility and safety for maintenance. Analyser shelters shall not be located underneath process equipment or pipe racks and shall be at least 7.5 metres from possible sources of toxic or flammable releases e.g. process pumps and compressors.  Analyser shelter shelter and panels panels shall not not be located in any Zone 1 classified hazardous hazardous areas. areas. Recommendation of analyser VENDOR shall be considered for the site installation of the analyser shelters, local analyser panels, field mounted sensors, sample transport lines and sample probes. The location of analyser shelters/ local panels should be specifically based on the following considerations: 

Minimum length of sample line between the sample take-off point and the analyser 



Minimum transport time between sample take-off points and the analyser 



Plot plan space availability



Ease of installation



Ease of accessibility for maintenance (cranes and equipment)



 Availability of utilities utilities vents and drain lines



Environmental conditions such as weather protection, heat, vibration and noise



Suitable (safe) position for the outlet of the sample vent manifold.



Suitable position for the inlet ducting opening of the forced ventilation system (toxic, flammable gasses; steam vapors, etc., not be present under normal conditions).

3.1. 3.1.2 2

Anal Analys yser er Loca Locall Pane Panels ls

Where an analyser is proposed for installation at an analyser local panel, then operation, maintenance, ambient conditions and technical requirements for the analyser shall be considered into the design. Details of analyser local panel requirements are contained within this specification. The design of analyser local panels shall suitable for duty and in accordance with this specification.

3.1. 3. 1.3 3

Anal Analys yser er Shel Shelte ters rs

Where the number or type of analysers justifies installation within a purpose built fully enclosed analyser shelter, then the requirements for analyser shelters contained within this specification shall be followed.

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Analyser Shelters & Analyser Local Panels Specification

3.1. 3.1.4 4

Reference: Classification: Revision: Page:

GTL-64-04 Public 04 7 of 22

Anal Analys yser er Sam Sampl plin ing g Syst System ems s

Refer to specification GTL 64-05 for details of analyser sampling systems. Where required these shall be located close to the associated analyser local panel or outside analyser shelter as appropriate.

3.1. 3.1.5 5

Fi Fiel eld d Mou Mount nted ed Anal Analys yser ers s

Where appropriate, field mounted analyser sensors/ transmitters shall be used.  All field mounted devices shall be suitable for the hazardous hazardous area and ambient conditions in which they are installed.

3.1.6

Analyser Analyser Equipment Equipment within Instrumen Instrumentt Equipme Equipment nt Room Room / RIB

 Analyser electronics electronics may be installed installed within the appropriate appropriate Instrument Instrument Equipment Equipment Room/ RIB with the associated transducer/ sensor located in the field. The sensor cable length shall not exceed the recommended length by VENDOR. For this type of installation, it shall be ensured that the analyser operates correctly, can be sensibly maintained, maintaine d, is suitably certified and protected for installation within the plant. The instrument equipment room/ RIB mounted equipment shall follow the requirements of standard no. GTL 64-06, with the field signals and any power supply feeds required suitably terminated within the cabinet housing analyser electronics. The cabinet shall normally be fed from a single 120Vac UPS supply. (If the analyser is used within a process control loop then a dual redundant 120Vac UPS feed with automatic and bump less transfer shall be used.) All power supply and general cabinet faults shall be alarmed via a potential free contact input to the DCS. Process sampling shall not be conducted within the RIB/ Instrument Room, and process fluids shall not enter the RIB/ Instrument Room for any reason.

3. 3.2 2

Ge Gene nera rall R Req equi uire reme ment nts s

Refer to General Instrumentation Specification, standard no. GTL 61-01 and Instrument Installation Specification, standard no. GTL 64-01 for Instrument selection and installation requirements.

3.2. 3.2.1 1

Anal Analys yser er Sys Syste tem m Phil Philos osop ophy hy

 Analyser systems shall be supplied as pre-assembled pre-assembled and pre-tested analyser shelters and panels in order to ease installation, reduce field labour and provide greater assurance that accurate and reliable process analytical signals are available for the control system with a minimum of on-site commissioning. Entire shelter, control room mounted equipment and analyser local panels shall be assembled and fully functionally tested as a complete system at the analyser shelter VENDOR’s factory prior to shipment to site. The OWNER or representative representativ e shall witness analyser tests. Analyser shelters may contain multiple analysers from different analyser VENDORs as required. The analyser shelters and local analyser panels shall be designed to be installed upon a pre-prepared site, requiring re-assembly of major modular components that require removal for shipping, e.g. SVAC unit, sample conditioning system cabinets, roof overhangs, external connection of utilities, signal and power cables, sample and return lines etc.  All connections connections for services, utilities utilities etc. shall be be on the outside outside of the analyser analyser shelters. shelters. Data from Analyser VENDOR shall be obtained to ensure all utilities required are suitably identified at the analyser location and the analysers are designed for the utilities available.  Analysers shall be subjected to a factory acceptance test at the analyser VENDORs works, prior to installation into the analyser shelter/local panel. Analyser shelters and analyser local panels shall be subject to a full factory acceptance test.

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Analyser Shelters & Analyser Local Panels Specification

3.2 .2.2 .2

Reference: Classification: Revision: Page:

GTL-64-04 Public 04 8 of 22

Sit ite e Cond Condit itio ions ns

The equipment and design must be suitable for operation in the coastal salt laden environment of the  Arabian Gulf. Gulf. Specific environmental conditions are detailed in standard no. GTL-01-01. Equipment located within air conditioned RIBs/ Instrument Equipment Rooms shall be designed to operate at 50°C and 95% humidity under air conditioning failure. Vortex coolers, as required, may be provided for standalone analysers, these shall be powered from the plant air system.

3.2.3 3.2 .3 3.2.3.1

Hazar Hazardou dous s Ar Area ea Class Classifi ificat cation ion Standards Equipment for use in potentially hazardous atmospheres shall be selected in accordance with IEC 60079, and certified as per IECEx. ATEX or equivalent certificates are also acceptable. Where equipment is located outside hazardous certified areas then “safe area” equipment may be used.

3.2.3.2

Protection The type of protection selected shall be as follows:

3. 3.2. 2.3. 3.3 3

Zone 2-

Typ ype e EEx EEx N or EEx EEx d wher ere e EEx N is not ava vail ilab able le Combination of EEx N and EEx e components

Zone 1 -

Type EEx d

Zone 0 -

Type EEx ia

Type Type 'p' 'p' equi equipm pmen entt Type 'p' equipment shall not be used where a viable alternative exists.

3. 3.2. 2.3. 3.4 4

Intr Intrin insi sica call lly y Safe Safe IS equipment shall be used in Zone 1 and 2 areas where a viable alternative does not exist. Where IS equipment is used, barriers shall be galvanic “active” type. IS calculations shall be compiled compiled for the worst case scenar scenario io for each type of IS loop. Each installed IS loop shall not exceed the worst case scenario.

3.2.3. 3.2 .3.5 5

Specif Specifics ics for An Analy alyser ser Shelte Shelters rs  Analyser shelters shall be ventilated with air drawn from a safe area and a positive overpressure shall be maintained to prevent ingress of potentially flammable gases. The amount of flammable material entering shelters shall be restricted to the small sample flow required by the analysers and the flow of flammable carrier gases to the analysers. To ensure maximum safety and operability, the following guidelines shall be adhered to, for equipment located within analyser shelters: i) Equipmen Equipmentt to be certified certified suitabl suitable e for Zone Zone 1 (as applicab applicable): le): Electrical Power Distribution Lighting Safety System, including gas detection  Analysers and and associated controls designated designated “critical” “critical” This will allow their safe, continued operation under abnormal or failure conditions, when flammable materials may build up in the shelters atmosphere. ii) Equipment Equipment to be suitable suitable for Zone 2 (as applicable) applicable)

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Analyser Shelters & Analyser Local Panels Specification

Reference: Classification: Revision: Page:

GTL-64-04 Public 04 9 of 22

 All analysers (other (other than “critical”)  All other electrical electrical equipment equipment not covered covered in i) or iii). This will allow their safe, continued operation on ventilation failure or flammable gas detection within the shelters. However if the SVAC has not been fully re-established within one hour, then all analysers shall be isolated. iii) Equipment Equipment to be suitable for safe area operations only (as applicable) applicable) Electrical Outlet Sockets Recorders Printers This equipment will be shut down instantaneously on SVAC failure or flammable gas detection within the shelter. 3.2.3.6 3.2. 3.6

All electrica electricall equipmen equipmentt including including SVAC SVAC mounted mounted outside outside the analyse analyserr shelters shelters shall shall be certified for specified hazardous hazardous area classification.

3.2.3.7 3.2. 3.7

Where Where EEx d versions versions are not availab available, le, then enclosu enclosures res contain containing ing electric electrical al equipme equipment nt only, may be pressurised with instrument air, providing a low-pressure alarm is installed. This alarm shall provide an input into the analyser shelter ‘common trouble alarm’.

3.2. 3. 2.4 4

Main Mainte tena nanc nce e Tool Tools s

Maintenance tools and configuration tools shall be supplied for all analysers as applicable. Including all software licences and manuals as required.

3.2.5 3.2 .5

Enclos Enclosure ure Enviro Environme nmenta ntall Prote Protecti ction on

 All field instrumen instruments ts shall be protected to IP 65 as a minimum and be finished to the manufacturer’s standard suitable for the environmental conditions.

3.2.6

Tag Nu Numbers

 All instruments shall be identified by a unique tag number. All instruments shall be tagged in the field with a tag number and a service. Tags shall be laminated plastic-type with black lettering on white background.

3.2 .2.7 .7

Signa ignall le lev vel els s

Refer to General Instrumentation Specification, standard no. GTL 61-01 for details on instrument signal levels and general requirements. Generally analyser outputs to the DCS shall be isolated, fully floating 4-20mA signals, self-powered or power from the DCS, and potential free contacts for status. The use of communications links for large amounts of analyser data may be considered, subject to OWNER approval.

3.2.8 3.2 .8

Electr Electroma omagne gnetic tic Compat Compatibi ibilit lity y Requi Requirem rement ents s

The analyser equipment shall comply with IEC 61000-4, parts 2 to 6 as detailed in section 1.2.

3.2. 3.2.9 9 3.2.9.1 3.2. 9.1

Labe Labell llin ing g Requ Requir irem emen ents ts All analyser analysers s and major major compone components nts with within in the analyse analyserr systems systems shall have have the followin following g identifying information on a permanently fastened nameplate: Identification number  



Pressure rating of pressurised parts

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Analyser Shelters & Analyser Local Panels Specification

Reference: Classification: Revision: Page:



Manufacturer’s name, model, serial number and operating range



Manufacturer’s internal (job reference) number 



Voltage, watts and frequency

GTL-64-04 Public 04 10 of 22

3.2.9.2 3.2. 9.2

Electrica Electricall distributio distribution n panels panels shall have perman permanentl ently y fastened fastened labels labels to clearly clearly identify identify function with name and tag number of connected equipment.

3.2.9.3 3.2. 9.3

All termina terminal l strips strip and wirin wiring g conn connectio ns shall shawiring ll be numbe nu mbered red and and and schematics. perma permanent nently ly tagged. tagged. The numbers shall bes indicated on the ections associated diagrams

3.2.9.4 3.2. 9.4

All cables cables shall shall be number numbered ed and tagg tagged ed at the s shelt helter er and equip equipment ment entry entry point points. s.

3.2.9.5 3.2. 9.5

All piping piping and and tubing tubing shall at entry entry and exit exit points points both inside inside and and outside outside the shelte shelterr walls and sampling system cabinets have permanently fastened labels defining product stream and destination.

3.2.9.6 3.2. 9.6

All valve valve componen components ts and ind indicato icators, rs, within within the shelter shelter systems systems and and sampling sampling systems systems shall shall have permanently fastened labels describing their function e.g. sample flow to analyser.

3.2.9.7 3.2. 9.7

All samplin sampling g system system panels panels shall shall have a perma permanent nently ly fixed labe labell on the door door giving giving the associated analyser tag number and a brief service description of the analyser.

3.2.9.8 3.2. 9.8

All labe labels ls an and d tags tags shall shall be in the the English English languag language. e.

3.2.9.9 3.2. 9.9

All sample sample take-of take-offf and return return points points from from the main proce process ss lines shall shall have have permane permanently ntly fastened labels to identify functionality.

3. 3.3 3

Lo Loca call A Ana naly lyse serr S Sys yste tems ms De Desi sign gn

Wiring inside the panels shall follow Control and Marshalling Cabinet Specification, standard no. GTL64-06 and Instrument Installation Specification, standard no. GTL 64-01.

3.3. 3.3.1 1

Loca Locall Anal Analys yser er Pane Panels ls

3.3.1.1 3.3. 1.1

An overhea overhead d weath weather er protecti protection on canopy canopy shall shall be provided provided at each local local analyser analyser panel panel large large enough to provide protection for the equipment and technician during maintenance in addition to providing protection against solar heating of the interior of the panel.

3.3.1.2 3.3. 1.2

Dependin Depending g on the dimensi dimensions, ons, local local panels panels shall shall either either be mounted mounted on a framewor framework k so that the centre line of the cabinet is between 1.25 and 1.75 metres from grade, or be free standing. Free standing cabinets shall be bolted directly to appropriate foundations and have full length access door(s).

3.3.1.3 3.3. 1.3

The panel, panel, support support framewo framework rk and canopy canopy shall shall be constructe constructed d from unpaint unpainted ed type 316 316 stainless steel.

3.3.1.4 3.3. 1.4

All fittings fittings e.g. e.g. hinges, hinges, screws, screws, bolts, bolts, nuts, nuts, washers, washers, suppor supports ts etc. and and componen components ts in contact contact with the atmosphere shall be stainless steel. Key locks are not required. The door shall have a fixed open position, or be lift off type.

3.3.1.5 3.3. 1.5

Adequate Adequate lightin lighting g (minimum (minimum 500 Lux) Lux) for full mainten maintenance ance within within the panel panel shall shall be provided provided local to the cabinet installation under the canopy. This lighting shall be powered from the electrical utility circuit (permanently available supply) and not from the instrument supply.

3.3.1.6 3.3. 1.6

Instrumen Instrumentt supp supplies lies shall shall be power powered ed from from the 120Va 120Vac c Instrumen Instrumentt UPS supply. supply.

3.3.1.7 3.3. 1.7

Local Local power isolati isolation on switches/ switches/ fuses fuses or circuit circuit breaker breakers s shall be mounte mounted d outside outside the panel panel for the incoming power supplies.

3.3.1.8 3.3. 1.8

All power power and signal signal cables cables shall terminat terminate e in junction/ junction/ terminati termination on boxes boxes located located outside outside the panel.

3.3.1.9 3.3. 1.9

Where Where utilities utilities are requir required ed at a local pa panel, nel, the the utility utility installatio installation n shall comply comply with with the requirements of Section 3.4.4.

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Analyser Shelters & Analyser Local Panels Specification

Reference: Classification: Revision: Page:

GTL-64-04 Public 04 11 of 22

3.3.1.10 Where gas cylinders cylinders are required required at at a local panel for for validation/ calibration calibration gases gases or as a reference gas/ utility, these shall be mounted at grade, clamped to the panel framework or exterior of the cabinet in bottle racks and located to allow easy removal and replacement. Connections to the cylinders shall be via flexible armoured stainless steel tubing to facilitate removal/ replacement. Two stage pressure reducing stations with pressure gauges for each gas cylinder shall be provided. 3.3.1.11 The positioning positioning of any local local analyser panel panel requiring requiring gas cylinders cylinders shall ensure ensure that a minimum distance of 7.5 m is maintained from any process pumps/ compressors or any other hazardous process equipment. 3.3.1.12 A stainless steel steel tag plate giving giving the analyser analyser tag number number and service service shall be fitted to the outside of the panel. 3.3.1.13 Unless agreed agreed with the OWNER otherwise, otherwise, the analyser analyser and all electrical equipment equipment located located at a analyser local panel must be certified for use in specified hazardous area for the appropriate gas group and surface temperature rating. 3.3.1.14 A thermostatically thermostatically controlled controlled vortex tube tube air cooler cooler shall be supplied at each local local analyser panel to maintain the internal temperature at a maximum of 30 oC, as appropriate. All vortex coolers shall be powered from plant air and not instrument air. Cooling failure shall be alarmed in the DCS.

3. 3.4 4

An Anal alys yser er She Shelt lter er D Des esig ign n

3.4. 3.4.1 1

Shel Shelte terr Lay Layou outt and and Desi Design gn

 Analyser shelter layout and design shall be develope developed d with inputs the analyser VENDOR. Layout and location of analyser shelters shall be subject to OWNER approval. The following items shall be taken into consideration in the sizing and layout of the shelters: 3.4.1.1 3.4. 1.1

Consider Consideratio ation n shall be given given to maximising maximising access access to equipmen equipmentt for maintenanc maintenance e purposes. purposes.

3.4.1.2 3.4. 1.2

The centre centre line line of equipm equipment ent mounte mounted d on the shelte shelterr walls shall shall be betwee between n 1.25 and and 1.75 1.75 metres from the floor.

3.4.1.3 3.4. 1.3

If groups groups of smaller smaller enclos enclosure ure or analy analysers sers are are to be mounted mounted one one above above the other, other, then then the centre line should be considered to be the mid-point between the two horizontal rows.

3.4.1.4 3.4. 1.4

A trolley trolley complete complete with with built in draw draw and and bottom bottom shelf shelf shall be provid provided ed in the shelte shelter, r, suitable to accommodate a recorder and printer, where required.

3.4.1. 3.4 .1.5 5

A port portab able le manua manually lly opera operated ted CO2  fire extinguisher shall be mounted on the inside of the main entrance door of each shelter.

3.4.1.6 3.4. 1.6

A suitably suitably sized workbe workbench nch of stee steell constructio construction n shall be provid provided ed inside inside the shelte shelter. r.

3.4.1.7 3.4. 1.7

A sink sink and eyewash eyewash facil facility ity shall shall be be include included d where where requir required. ed.

It is often prudent to anticipate expansion by allowing space for additional analysers.

3.4. 3.4.2 2

Shel Shelte terr Cons Constr truc ucti tion on

The following requirements shall be met in the design and construction of the analyser shelters: 3. 3.4. 4.2. 2.1 1

Foun Founda dati tion on Wo Work rk  A concrete pad will be be provided for each each analyser shelter. shelter. The perimeter perimeter of the concrete concrete pad shall extend sufficiently to allow personnel access to equipment mounted on the outside walls.  Ancillary equipment equipment such as Sample Recovery Units, Validation Vessels and Validation gas bottle racks shall be mounted on concrete at grade adjacent to the analyser shelter. Foundations, utilities and other facilities shall be provided at the analyser shelter location as required by the analyser design and considering the requirements the analyser VENDOR.

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Analyser Shelters & Analyser Local Panels Specification

3. 3.4. 4.2. 2.2 2

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GTL-64-04 Public 04 12 of 22

St Stee eell Stru Struct ctur ure e The analyser shelter construction shall include a steel frame with interlocking electrogalvanised sheets on the exterior wall and insulated with 50 mm fibreglass, with electrogalvanised sheet over the fibreglass insulation on the inside. The sandwich construction shall be from 1.5 mm electro-galvanised sheets. The floor shall be at least a 5 mm thick checked plate, painted with non-skid paint. The shelter base frame, support structures, walkways, steps and handrails shall be of a welded, hot dipped galvanised steel construction.  All joints shall be be waterproof. waterproof.

3.4.2.3

Doors  A door shall be provided at each end of the shelter. One will be the normal main entrance and the second an emergency exit/entrance. The main door shall be suitably sized for equipment access, the second door shall only be sized for personnel access. The doors shall open outwards. Each door shall be fitted with an external lockable handle, which can also be opened from inside the shelter. Stainless steel panic crash bars shall be fitted inside each door which override the locks. All doors shall have automatic closers.  All locks, hinges and and pins shall be manufacture manufactured d from stainless steel. steel. All locks are to have have a common master key. Each door shall be provided with a window of at least 0.2 square metres (2 square feet). The door frame and window shall be designed to withstand a total over pressure of 2 bar-g from either direction. NFPA 101 Paragraph 5-11.3 may be referred in determining layout and number of doors.

3. 3.4. 4.2. 2.4 4

Roof Roof and and Ov Over erha hang ngs s The roof shall be designed to carry the load of two persons walking on it. Rain gutters and down pipes shall be provided on the low side of the shelter. The roof may have a constant slope or a peaked design with a minimum incline of 30 mm/ metre of width. The roof shall be leak proof and guaranteed by the analyser shelter VENDOR for five years. A constant slope roof is the preferred option. Roof overhangs be provided on the long walls of the shelters for weather protection of  junction boxes, sample conditioning conditioning systems etc., and over the doors. If necessary the overhangs may be removable for transport. Because of the potential for leaks, no entries (for vents etc.) shall be made through the roof of the house. Shelter/ enclosures exposed to sun shall be provided with tropical roofs made of epoxy sheeting.

3.4.2.5

Painting  All external house parts (cladding) including the walls, roof, doors and the overhangs overhangs shall be painted in accordance with Protective Coatings, standard no. GTL-81-01. The internal shelter walls shall be 1.5 mm minimum thick electro-galvanised sheets finished with a white epoxy paint.

3.4. 3.4.2. 2.6 6

Equi Equipm pmen entt Moun Mounti ting ng Str Strut uts s Internal equipment shall be mounted from a dedicated framework structure within the analyser shelter and not from the walls.  A means shall be provided provided for m mounting ounting equipment equipment as required required on the the external shelter shelter walls. This will include sample conditioning system cabinets, junction boxes, electrical supply hardware etc.

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Analyser Shelters & Analyser Local Panels Specification

3.4. 3.4.2. 2.7 7

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GTL-64-04 Public 04 13 of 22

Misc Miscel ella lane neou ous s Ha Hard rdwa ware re  All equipment equipment mounted on the external external shelter walls, e.g. e.g. junction boxes, cable tray tray etc. plus all fittings e.g. screws, bolts, nuts, washers, supports etc. and any other components in contact with the atmosphere shall be stainless steel. Use of any other material shall be subject to OWNER approval.

3.4.2.8

Lifting The shelters shall be designed to be lifted as entire structures. This can be via lifting lugs on the base frame or other suitable location so that the entire structure can be lifted safely onto the foundation. If a special lifting sling is required, required, it shall be supplied with the shelter. Major external components e.g. SVAC system, sample recovery system etc. shall be removable for transport. The shelters and component enclosures shall be suitable for hoisting and shipment on a flat bed trailer. The centre of gravity must be clearly marked on each system assembly.

3.4.3

Shelter Shelter Ventilatio Ventilation n and and Air Air Conditionin Conditioning g System System (SVAC) (SVAC)

3.4.3.1 3.4. 3.1

The SVAC SVAC must be be supplied supplied as as a complete complete system system with with the analys analyser er shelter shelter,, the air conditioning sub-vendor must have proven support and service facilities local to Qatar. The SVAC sub-vendor shall be in accordance with the approved VENDORs list.

3.4.3.2 3.4. 3.2

Each SVAC SVAC system system shall be be a frame moun mounted ted pa packag ckage e unit locate located d adjacent adjacent to the the shelter. shelter. The controls for the SVAC unit should be mounted on the external of the shelter wall. Note: The SVAC unit may alternatively be mounted on the shelter roof subject to OWNER approval. In this case a permanent access ladder, walkway and hand rails shall be provided.

3.4.3.3 3.4. 3.3

Each shelte shelterr shall be forced forced draft draft (positive (positive pressur pressure) e) ventilate ventilated d by two independ independent ent air fan fan systems. Ventilation shall be continuous and provide both fresh air makeup and recirculation of inside air. Each fan shall be sized to supply at least eight (8) fresh air changes per hour within the shelter and maintain a positive overpressure of at least 2.5-5 mm WG. The number of air changes per hour shall be increased if necessary to dilute the worst case hydrocarbon leak to less than 25% LEL in the event of a complete failure of any single line carrying flammable materials. Only one fan will be in operation at any one time but each fan will be capable of continuous operation. A switch on the SVAC system control panel will enable either fan to be selected as the normal duty fan. Failure of the selected duty fan shall automatically start the other fan and provide an input to the common “shelter trouble” alarm. An easily removable dust filter shall be provided for each fan.

3.4.3.4 3.4. 3.4

Each fan fan motor motor and compr compresso essorr motor motor shall shall have its own own main main power power switch and and manual manual remote/ start/ stop switch located close to the motor which will override the automatic facilities facilit ies when switched out of the remote position. This will be in addition to the main power isolation switch for the SVAC unit at the 3-phase 3-phase distribution bo board. ard. Ventilation fans shall shall have direct drive motors. No belt driven fans shall be allowed.

3.4.3.5 3.4. 3.5

Facilitie Facilities s shall be be provided provided in in the SVAC SVAC system system to prevent prevent cross cross flow flow through through the the fan that that is not in operation and such that the system may operate with one fan removed for maintenance. A single fresh air intake duct shall be provided for the SVAC system which will obtain air from an electrically unclassified (safe) location. This will be a point that is at least 7.5 metres from any equipment containing hydrocarbons or other flammable or toxic vapours. The air intake ducting shall be galvanised steel or GRP and insulated to prevent heating by solar radiation.

3.4.3.6 3.4. 3.6

A low ventilati ventilation on air flow flow switch shall shall be provid provided ed across across each fan fan set to alarm alarm at 80 percent percent of normal flow. This may be achieved by a thermal switch in the air flow. The switch shall automatically start the back-up fan and provide a local “fan failure” alarm and not provide an input to the “shelter trouble” alarm. The flow switch forbenon-duty fan shall be inhibited until common it is automatically started. The back-up fan shall also automatically started on 20% LEL detection or toxic gas detection in the shelter. In this case both fans shall remain running until manually reset.

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Analyser Shelters & Analyser Local Panels Specification

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GTL-64-04 Public 04 14 of 22

3.4.3.7 3.4. 3.7

A separate separate pressur pressure e switch shall shall be installe installed d to provide provide a “loss of shelter shelter pr pressu essurisa risation tion”” alarm. This shall nominally be set at 2.5 mm WG. A time delay of approximately 90 seconds shall be provided for this alarm to allow the standby fan to cut in and to allow personnel to enter and exit the shelter without causing spurious alarms. A local “loss of shelter pressurisation” shall be initiated and an input provided to the “shelter in hazardous condition” alarm.

3.4.3.8 3.4. 3.8

Air release release from from the shelter shelter shall shall be by weighted weighted baroma baromatics tics louvers louvers locate located d only at the top and bottom of the shelter walls. The louvers shall be designed to maintain an over pressure of 5 mm WG within the shelter and shall be manually adjustable to allow for changing conditions. Each louver shall be protected externally against accidental damage and be provided within a cover to prevent sand etc. from entering the shelter. The number and location of vents shall be subject to approval by the OWNER. A magnehelic indicator shall be installed inside the shelter to provide a visual indication of over pressure.

3.4.3.9 3.4. 3.9

The SVAC SVAC system should should provi provide de an even even distribut distribution ion of air throug throughou houtt the shelter shelter to prevent uneven cooling or a localised build-up of hazardous vapours. This should be achieved by using diffusers or ducting inside the shelter, unless it can be demonstrated that even distribution can be achieved without these diffusers and ducting.

3.4.3.10 The noise generated generated by the SVAC system system within the shelter shelter shall be be less than 70 70 dBA measured 1 metre from the exhaust grill at a height of approximately 1.75 metres. The noise levels 1 metre from the SVAC system outside the shelter shall not exceed 85 dBA. 3.4.3.11 The capacity capacity of the air air conditioning conditioning (cooling) (cooling) system shall shall be sufficient sufficient to maintain maintain the temperature within the shelter to 23 oC ± 2oC with the ambient conditions. The analyser VENDOR shall provide calculations to demonstrate that the SVAC system has sufficient cooling capacity. The system shall be fully self-contained and automatic. The temperature control limits may be relaxed if major savings can be demonstrated, this is subject to OWNER’s approval. 3.4.3.12 Cooling shall shall be provided provided by means means of an air cooled cooled mechanical mechanical refrigeration refrigeration unit. unit. This shall also dehumidify the air to prevent condensation within the analyser shelter, and to maintain the relative humidity within the analyser shelter to 70% or less. 3.4.3.13 The vibration vibration measured measured at any component component of the SVAC SVAC system (compressor, (compressor, motor, motor, fan etc.) must not exceed 7.5 min/sec. 3.4.3.14 NFPA 496 and and applicable applicable OSHA requirements requirements shall shall be referred referred for ventilation ventilation requirements. requirements. 3.4.3.15 Connect SVAC condensate condensate drain line to the condensate condensate drain header/ sewer. sewer. Condensate Condensate should not allow to drain freely on concrete pad.

3.4.4

Util iliities

3.4.4.1 3.4. 4.1

During During detailed detailed engine engineerin ering, g, the desi design gn of utilities utilities required required for for correct correct operation operation of the analyser systems shall be developed in conjunction with the analyser VENDOR.

3.4.4.2 3.4. 4.2

The utilitie utilities s and drain drain return return headers headers (1 inch inch minimum minimum size) size) shall shall run along along the entire entire length length of the longitudinal shelter walls. The headers should be run either inside or outside the shelters as most appropriate.

3.4.4.3 3.4. 4.3

Each utility utility header header shall shall have have a primary primary shut-off shut-off valve, valve, accessib accessible le from grade grade,, located located upstream of any user connections. The primary shut-off valve shall be outside the shelter.  All pressurised headers shall be fitted with a pressure gauge. The incoming headers for instrument air, plant air, plant nitrogen and fresh (potable) water (as required) shall have filters upstream of any users. The steam header shall have a Y-strainer and blow down valve. Dual filters and dual driers (mounted downstream of the filters) shall be supplied for the instrument air header to permit change over without shutting services down. The filters for the instrument air headers and the filter/ regulators for each individual instrument air user shall have automatic drains.

3.4.4.4 3.4. 4.4

All header headers s downstrea downstream m of inlet filters filters shall shall generall generally y be construct constructed ed of 316 stainle stainless ss steel piping. Materials for headers shall be designed to be compatible with the fluids contained e.g. Cooling water supply and return headers, may be CS pipe sch 80.

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Analyser Shelters & Analyser Local Panels Specification

Reference: Classification: Revision: Page:

GTL-64-04 Public 04 15 of 22

3.4.4.5 3.4. 4.5

Each user user connectio connection n to a supply supply or return return header header shall shall have have an individu individual al isolatio isolation n ball valve except for connections to atmospheric headers. These isolation valves shall be accessible from grade. The individual isolation valves for all supply and return headers shall be stainless steel. The isolation ball valves for safety relief connections shall be lockable in both positions. Utilities (including instrument air) and services downstream of the individual isolation valves shall be distributed throughout the shelter via suitable stainless steel tubing or pipe as a minimum, suitable materials shall be used if stainless steel is not compatible with the fluid. PVC covered copper tubing must not be used.

3.4.4.6 3.4. 4.6

Each heade headerr shall be pr provid ovided ed with all all valves necessa necessary ry for the curre current nt analyser analysers s plus at least two extra plugged inlets/ outlets in the region of the spare space inside and outside the shelter.

3.4.4.7 3.4. 4.7

All header headers s shall sloped sloped to to a low point point and inclu include de a knock knock out pot pot and drain drain valve. valve. All low low point drains shall be connected to the atmospheric drain header.

3.4.4.8 3.4. 4.8

When requ required ired a att a shelter, shelter, provisio provision n shall be be made for for installing installing gas gas cylinder cylinders s at grade, grade, alongside the concrete pad. The cylinders shall be clamped in bottle racks. The cylinders shall be located to allow easy disconnecting and removal.

3.4.4.9 3.4. 4.9

Connectio Connections ns to all gas cylinder cylinders/ s/ bottl bottles es shall be via via flexible flexible stainless stainless steel steel tubing tubing to facilitate facilitate their removal and replacement. The dual pressure reducing stations with pressure gauges and change over facilities for all validation gas cylinders at the shelter shall be provided.

3.4.4.10 All validation vessels containing containing liquid sample shall shall have a connection connection from the shelter nitrogen header or nitrogen cylinder as appropriate. 3.4.4.11 The standard standard Gas cylinders/ cylinders/ cylinder banks banks as required required for the analysers analysers shall be supplied supplied such that a minimum of 3 months normal operation should be achieved from the installed cylinders. 3.4.4.12 A quick connector connector to the instrument instrument air header header complete with with regulator, regulator, filters and lubricator lubricator shall be provided in each analyser shelter. 3.4.4.13 Low pressure pressure switches shall be installed installed on the main instrument air header, header, plant plant air header, header, plant nitrogen header, carrier gas header and detector fuel gas header, as appropriate, which shall input to the shelter ‘common trouble alarm’. 3.4.4.14 When steam is required required for for heating remote remote analyser analyser equipment, equipment, each user user shall an individual individual supply with Isolation valve and trap. 3.4.4.15 All utility piping shall be be according according to piping piping specification. specification.

3.4. 3. 4.5 5

Haza Hazard rd Prev Preven enti tion on

3.4.5.1 3.4. 5.1

The analyse analysers rs and associat associated ed equipme equipment nt shall be de design signed ed and assemb assembled led to minimise minimise the exposure of personnel to hazard.

3.4.5.2 3.4. 5.2

Suitable Suitable sig signs ns shall be provid provided ed to warn person personnel nel of potentia potentiall hazards hazards (e.g. source sources s of high temperature, pressure or voltage).

3.4.5.3 3.4. 5.3

Protectiv Protective e guards guards shall shall be installed installed over over sources sources of high high temperatu temperature re or voltage voltage..

3.4.5.4 3.4. 5.4

High pressu pressure re sources sources shall shall not be locate located d in areas areas of normal normal occupan occupancy. cy. In genera general, l, high pressure sources shall be located outside analyser shelters.

3.4.5.5 3.4. 5.5

The quantit quantity y of hazardous hazardous sample samples s (toxic or flammab flammable) le) enterin entering g analyser analyser shelter shelters s shall be minimised. Consideration shall be given to mounting Gas Chromatographs liquid sample valves inside the ovens, with purge air being vented outside the analyser shelter.

3.4.5.6 3.4. 5.6

Pockets Pockets or void void spaces spaces where where hazard hazardous ous gas gas could accum accumulat ulate e shall be be eliminat eliminated. ed.

3.4.5.7 3.4. 5.7

Sampling Sampling systems systems contain containing ing highly highly toxic toxic or flammable flammable compone components nts shall shall include include facilities facilities for purging with an inert gas prior to maintenance of sampling system components.

3.4.5.8 3.4. 5.8

Sampling Sampling system systems s and analyse analysers rs containi containing ng toxic toxic or odorous odorous samples samples shall shall be install installed ed in enclosures and purged with instrument air. The effluent air from these enclosures shall be connected to a separate atmospheric vent system and routed outside the analyser shelter.

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Analyser Shelters & Analyser Local Panels Specification

3.4.5.9 3.4. 5.9

3.4.6 3.4.6.1 3.4. 6.1

Reference: Classification: Revision: Page:

GTL-64-04 Public 04 16 of 22

For samples samples contain containing ing Toxic Toxic or Carcinog Carcinogenic enic materi materials, als, such as as Benzene, Benzene, then then the manual manual sampling device must be of special design, such as Dopak, Prise Masson system 1000, system 2000 or equivalent.

Electrical Each shelte shelterr shall have have an electric electrical al groundin grounding g system in line line with Instrum Instrument ent Earthin Earthing g Philosophy no. QGTL1-INS-63-00001. AllAanalyser chassis bar andshall electrical enclosure chassis shallDrawing be connected to the shelter ground. copper ground run around the shelter interior.

3.4.6.2 3.4. 6.2

Each shelte shelterr shall be furnish furnished ed with an Intrins Intrinsicall ically y Safe (I.S.) (I.S.) earthing earthing system system if required. required. The I.S. earth shall be fully insulated from the electrical ground system.

3.4.6.3 3.4. 6.3

Power Power distributi distribution on panels panels shall be provid provided ed in each shelter shelter.. All switches switches and distribut distribution ion boards shall be certified suitable for the hazardous hazardous area classification. The primary isolation switch for each type of power supply shall be mounted on the external shelter wall. Three separate power distribution boards are required: 

Motor and Electrical General Utilities This shall be a 3 phase 4 wire, 415 VAC, 50 Hz supply. The distribution board shall be mounted outside the shelter.



General Purpose Power Supply This be a general 240 VAC, 50 Hz power supplytoderived from single a single phase of the VAC,will 3 phase supply. It will be used feed shelter phase users and415 the shelter lighting. The distribution board shall be mounted inside the shelter and the loads shall be divided evenly across the phases of the 415 VAC supply.



UPS Power Supply This will be a 120VAC, 50 Hz secure secure supply. It will be used to power the analysers, analysers, the area gas detectors, and the shelter safety and alarm system, as required. The distribution board shall be inside the shelter. This supply will be sourced from the nearest RIB instrument UPS.

3.4.6.4 3.4. 6.4

Each power power user user shall have have an individu individual al automati automatic c circuit circuit breaker breaker (or switch/ switch/ fuse) fuse) at the distribution board. Circuit breakers shall be provided at each distribution board to cover all the analysers plus another three spare breakers.

3.4.6.5 3.4. 6.5

All motors motors includi including ng ventilat ventilation ion fans, fans, fast loop loop and sample sample recove recovery ry pumps pumps shall shall have an individual circuit breaker at the distribution board plus an individual on/off/remote power switch mounted to the toance allowthrough isolation for safe and  Achieving motor next motor isolation for motor maintenance mainten throu gh relays and and maintenance pushbuttons pushbuttons is notlocal acceptable. accecontrol. ptable.

3.4.6.6 3.4. 6.6

The shelte shelterr duty duty fan shall shall automa automatical tically ly restart restart after after a power power failure. failure.

3.4.6.7 3.4. 6.7

Three Three pin grounded grounded socket socket convenien convenience ce outlets outlets with appropria appropriate te hazardou hazardous s certificatio certification n shall be provided in each shelter, as required, for connecting test equipment. The sockets will be rated for 15 Amps and be equipped with ground fault.

3.4.6.8 3.4. 6.8

All power power supply supply failure failures s shall b be e alarmed alarmed at at the shelter shelter and and include included d in the commo common n analyser shelter trouble alarm to the DCS.

3.4.7

Lighting

3.4.7.1 3.4. 7.1

Internal Internal lig lightin hting g in each analyser analyser shelter shelter shall shall provide provide an intensity intensity of illuminat illumination ion of at least 500 LUX at working levels. Light switches shall be provided by each door.

3.4.7.2 3.4. 7.2

External External lightin lighting g shall be provid provided ed under under the longitud longitudinal inal overh overhangs angs of each each shelter shelter and will will provide an intensity illumination of at least be provided on eachof site on the external wall. 400 Lux at working levels. Light switches shall

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Analyser Shelters & Analyser Local Panels Specification

3.4. 3. 4.8 8

Reference: Classification: Revision: Page:

GTL-64-04 Public 04 17 of 22

Wiri Wiring ng and and Cab Cabli ling ng

3.4.8.1 3.4. 8.1

All power power and signal signal wiring wiring and and cabling cabling shall shall be in accord accordance ance with with Instrum Instrument ent Cable Cable Specification, standard no. GTL-63-02. SWA cabling shall be used for all external shelter wiring and will terminate with certified cable glands. Conduit systems shall not be used.

3.4.8.2 3.4. 8.2

Signal Signal and po power wer cables cables shall shall be adequate adequately ly separate separated d to ensure ensure integrity integrity and and prevent prevent any form of interference.

3.4.8.3 3.4. 8.3

All cabling cabling inside inside each each shelter shelter shall shall be run in in cable trays. trays. The The main cable cable trays trays running running around the shelter ceiling shall be mounted horizontally. Separate cable trays shall be provided for signal and power cabling.

3.4.8.4 3.4. 8.4

Cable Cable transits transits through through the analy analyser ser shelter shelter walls walls shall be provid provided ed separat separately ely for power power and signal cables. 



3.4.8.5 3.4. 8.5

3.4. 3.4.9 9 3.4.9.1 3.4. 9.1

For power cables, gas tight cable transits shall be provided below or above the power distribution panels. These transits shall be single or double frame with a minimum of 10% spare entries fitted with rubber blocks. For signal cables, gas tight cable transits with a minimum of 10% spare entries shall be provided. Single or double frame transits may be used.

Single Single lay layer er termina terminall blocks/ blocks/ connecto connectors rs must be be used for for all wiring wiring conne connection ctions. s.

Si Sign gnal al Junc Juncti tion on Boxe Boxes s Signal Signal ter termina mination tion junctio junction n boxes boxes shall be be mounted mounted on on an externa externall shelter shelter wall. wall. All termina terminals ls and wires shall be identified. A minimum of 40% spare terminals shall be provided in each  junction box in addition to the terminals required required for the future designated designated analysers. To ensure proper levels of segregation, separate junction boxes shall be provided at each shelter for the following, as required: 

 Analogue signal circuits (4-20 mA). All analyser signals for process variables will be 420 mA, fully floating and isolated.



I.S. Analogue signals.



Digital status and alarm signals.



I.S. digital signals.

3.4.10 3.4.1 0 Shelter Shelter Safety Safety Analysers Analysers 3.4.10.1 Two flammable flammable vapour (LEL) detectors detectors shall be be installed for every 15 m² or part part thereof of of shelter floor at floor level and ceiling level in the vicinity of the ventilation air outlet louvers. The alarm settings shall be 20% LEL calibrated on methane or hydrogen. The alarms and actions detailed in Section 3.4.11 will be initiated on this level of LEL detection. 3.4.10.2 The shelter LEL and toxic gas gas detectors shall shall be wired direct to the Plant Plant Fire and Gas system. The F&G system will then provide a shelter shutdown signal back to the analyser shelter safety system. 3.4.10.3 If other toxic gases gases are present present in samples samples in hazardous hazardous levels then then appropriate appropriate detectors detectors shall be installed in the shelter with alarms. 3.4.10.4 Calibration kits kits and calibration calibration gases for one one year’s operation operation for the LEL LEL detectors and and gas detectors shall be supplied with each shelter. Maintenance tools and configuration tools shall be supplied for each type of detector as applicable. 3.4.10 3.4 .10.5 .5 A low low Oxyg Oxygen en (O2) detector shall also be provided in the shelter loop powered from the control system, DCS.

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GTL-64-04 Public 04 18 of 22

3.4.11 3.4.1 1 Alarm Alarm Signals Signals and and Indicati Indications ons 3.4.11.1 The following following common alarm alarm signals signals shall be transmitted transmitted from each analyser analyser shelter: a.

“S “She helt lter er in Haza Hazard rdou ous s Cond Condit itio ion” n” Alar Alarm m This will be an alarm in the DCS. It will be initiated by the following conditions, as applicable: 

Loss of shelter pressurisation.



Flammable vapour (20% LEL) detection.



Gas detection inside the shelter.





b.

Gas detection in local analyser cabinets and/or sample conditioning system cabinets associated with the shelter. Loss of ventilation flow.

“C “Com ommo mon n Shel Shelte terr Trou Troubl ble” e” Alar Alarm m This will be an alarm in the DCS. It will be initiated by the following conditions, as applicable: High shelter temperature (AC failure). 







Power failure (each switchboard).  Air purge system failure (for purged purged enclosures). enclosures). Sample recovery system high or low level.

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Sample flows low (fast loop).

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Low instrument air header pressure.

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Low plant nitrogen header pressure.

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Low chromatograph carrier gas header pressure.

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Low chromatograph detector fuel gas header pressure.

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 Analyser self self diagnostic (malfunction) (malfunction) alarms.

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 Any other non-critical non-critical system system alarms.

3.4.11.2 An alarm annunciator annunciator shall be provided provided outside outside the shelter shelter with alarm alarm windows for every individual alarm initiator detailed above. The alarms shall flash until acknowledged going to a steady state and shall automatically reset when alarm conditions clear. 3.4.11.3 Alarms annunciated annunciated shall shall be configured configured as as auto-reset auto-reset type in accordance accordance with ISA S18.1 type ‘A’. A horn and beacon shall be provided outside the shelter, and a beacon shall be located outside, above the main door of the shelter to alarm when the shelter is in hazardous condition. Alarm/ Horn silence buttons shall be provided. Gas and fire alarming shall be provided in accordance with Fire and Gas System Technical specification, standard no. GTL 62-04. Separate beacons shall be provided for gas alarms. 3.4.11.4 All inputs to the alarm annunciato annunciatorr shall have an adjustable adjustable 0-60 second second time delay to minimise nuisance alarms. 3.4.11.5 All alarm contacts contacts shall be the the Normally Open Open (NO) fail fail safe type with alarm alarm condition condition as the de-energised state. The alarm contacts for each alarm to the control room must be completely independent and isolated from other alarm contacts. 3.4.11.6 The actions actions below below shall be initiated initiated at the following following alarm alarm points: points: a)

20% 20% L LEL EL Fl Flam amma mabl ble e Vap Vapou ourr D Det etec ecti tion on

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Analyser Shelters & Analyser Local Panels Specification

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b)

GTL-64-04 Public 04 19 of 22

Shelter back-up fan shall automatically start and keep running until manually reset. Isolation of power to electrical convenience outlets, shelter recorder and shelter printer until manually reset.

Toxic Gas Detection 

c)

Reference: Classification: Revision: Page:

Shelter back-up fan shall automatically start and keep running until manually reset.

Shelte Shelterr Pressu Pressuris risati ation on Fai Failur lure e ((Fa Failu ilure re of Bo Both th Fa Fans) ns) 

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Isolation of power to electrical convenien convenience ce outlets until manually reset. If pressurisation is not reinstated within one hour, then power to all process analysers shall be isolated.

3.4.12 3.4.1 2 Shelter Shelter Instrumen Instrumentatio tation n Wiring inside the panels shall comply to Control and Marshalling Cabinet Specification, standard no. GTL-64-06, and Instrument Installation specification, standard no. GTL 64-01.

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Analyser Shelters & Analyser Local Panels Specification

GTL-64-04 Public 04 20 of 22

APPENDIX 1 : TYPICAL ANALYSER INSTALLATIONS The following table offers guidance on typical installations to be followed for various types of analyser. Analyser Type

NoteNot e-1 1:

Typical Location

Conductivity

Field (Note-1)

pH

Field (Note-1)

SG / Density

Field (Note-1)

Chlorine

Field (Note-1)

Gas Chromatograph

Analyser Shelter  

Very Low Level Sulphur Analyser

Analyser Shelter  

Molecular Weight

Analyser Shelter  

Flue Gas Analysers (CO/O2 /CO2/NOx)

Field (Note-1)

Flash Point

Local Panel or Analyser Shelter  

Freeze Point

Local Panel or Analyser Shelter  

Wobbe Index

Local Panel or Analyser Shelter  

Total Hydrocarbon Content

Analyser Shelter  

Total Oxygen Content

Local Panel or Analyser Shelter  

Cold Filter Plug Point Flare Gas composition

Analyser shelter   Analyser Shelter  

Flare Oxygen

Field (Note-1)

With With RIB/ RIB/ local local electr electron onics ics as req requir uired ed

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Analyser Shelters & Analyser Local Panels Specification

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4 Role Roles s and and Re Resp spon onsi sibi bili liti ties es 4. 4.1 1

Im Impl plem emen enta tatio tion no off th the eD Doc ocum umen entt

The custodian has the responsibility to manage and implement the requirements of this Technical Standard.

Document Custodian Document custodian must: Custodian of the standard shall ensure that departments mentioned in the standard are involved in the review cycle as part of the development team. Ensure that only latest approved documents are filed Work with Quality Section to ensure that IMS Documents are maintained according to the requirements of the Document Management Standard Review all the comments of the Development Team and makes the final decision on what comments to be included. Communicate the Operational Policies, Standards and Technical Standards Ensure the requirements in the documents are implemented Be in compliance with the requirements of the documents Identify Development/Review Team Members Standard Custodian to resolve any raised dispute with development team members

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4. 4.2 2

Co Cont nten entt o off tthe he Do Docu cume ment nt

Development/Review Development/R eview Team Members The Development Team Members must:    

Develop the documents only on approved templates Ensure that the latest approved documents are uploaded and filed Partake in meetings to discuss and timely review the relevant draft document Suggests essential changes, including deletion and addition to the document

Head of Quality Does a final review before approval of Policies, Standards and Technical Standards to ensure that:  

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The development team is aligned with the requirements of the Standards and Technical Standards Ensure the completeness of the roles and responsibility clause in the Standards and Technical Standards Ensure the completeness of the Standards and Technical Standards (all required clauses are completed) Review the completeness of the requirements in the Standards and Technical Standards The appropriate references to procedures and supporting documentation is made There is no duplication of information. The document content meets the requirements of the Document and Record Management Standards Possible gaps in the information is identified in liaison with the Development Team.

Information Management Specialist Does a final review of Procedures and Supporting Documentation to ensure that:   

The structure, template, format, correctness and completeness of the documents Keep all the document templates updated and make them available to the users Ensure the content of the document is aligned with document type

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Analyser Shelters & Analyser Local Panels Specification

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GTL-64-04 Public 04 22 of 22

5 Authorisation The Projects Services Manager and Chief Engineering & Projects Officer have seen and approved this document.

6 Revisions  

Date

Rev.

Remarks

01 02 Dece De cemb mber er-2 -201 016 6

03

Se Sect ctio ion n 3 has has b bee een n com compr preh ehen ensi sive vely ly re revi vise sed d iinn-li line ne wi with th la late test st appl applic icab able le codes and best industry practices.

July 2020

04

Template update. No revision to contents.

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