Gas Line Heaters

Certifications:

ATEX / IECEx II 2 G/D
Ex e IIC, T3 to T6 Gb, IP67
Ex d IIC, T3 to T6 Gb, IP66
Ex t IIIC, T85 to T200°C Db, IP66
CSA Class I, Division 2, Groups A, B, C, D; Temperature coded T3 to T6; Enclosure type 4 or 4X
Class I, Division 1, Groups A, B, C, D; Temperature coded T3 to T6, Enclosure type 4
CSA Ex d IIC; T3 to T6 Gb, IP66
Class I, Zone 1, AExd IIC; Temperature coded T3 to T6 Gb, IP66
CU TR (EAC), CNEx, CCOE, Inmetro, KGS
 

Vessel Design Codes:

ASME VIII Div 1
 

Vessel Materials:

Low temperature carbon steel
Connections rated Class 150 or 300
 

Elements:

Individual hairpin elements are manufactured from 80/20 NiCr resistance wire embedded within high purity compacted magnesium oxide powder; the element sheaths are corrosion / erosion resistant Incoloy 800 tubes; all elements are sealed using the double-sealing method to prevent moisture ingress
 

Element to Tubesheet:

Elements are sealed into their support plate (tubesheet) by ‘Bite’ type couplings; the bite couplings provide a 100% seal and are suitable for use in pressures exceeding 500 barg.
The use of mechanical couplings allows for individual elements to be replaced at site using simple mechanical tooling.
 

Internals:

Elements are supported in a segmental or rod type baffle assembly to prevent flow-induced vibration and hot spots, generally complying with TEMA standards
Correct baffle selection ensures that element temperature or pressure drop restrictions can be met
 

Terminal Box:

Manufactured from either mild steel or stainless steel, having un-drilled gland plates (Ex e) or BSP cable entries (Ex d)
 

Voltage:

Suitable for voltages up to 690V
 

Documentation:

Each Gas Line Heater will be provided with a full document dossier including: General Arrangement Drawing, Schematic Diagram, Material Test Certificates for pressure parts to EN10204 Type 3.1, Design Calculations (strength and thermal), Hazardous Area Certificates, IOM