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Stray Current Corrosion Monitoring System (SCCMS)

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ISO Certification


Stray Current Corrosion Monitoring System (SCCMS)

Tested and certified system for monitoring and mitigating stray current damages for MRT & LRT stations in full compliance to BS EN 50122-2 International Standard and ISO 9001:2015 Certification.


Stray current as defined in BS EN 50122-2 as the part of a current which follow paths other than the intended paths and the consequence of stray current is that where it leaves a buried metal object, electrolytic corrosion will occur, frequently in highly localised areas and potentially leading to loss of material and damages This is clearly undesirable in the case of metallic pipes carrying gas and water, as leakage and/or rupture has obvious safety and/or operational risks to both the tramway and the general public. In the case of cables, particularly the older lead sheathed types, such loss occurs even more rapidly and can lead to breakdown of the (now) unprotected inner insulation of the cable.

Stray current problem association with an electrified DC transit system

The Purpose of Stray Current Corrosion Monitoring System (SCCMS)

Benefits at a glance

• Systems fully comply with EN50122-2 International Standard.
• ZRE Enclosure Type Tested to 90 PSI for 96 hours
• Combination of Malaysia & Singaporean Expertise
• Proven track record in MRT Singapore & the region
• Comply with BIM Level 2, 3-D Design System
• Tokai an ISO 9001:2015 certified Company with a proven track record

Our Services

• To provide specialist engineering and consultancy for the design, supply, install, testing and commissioning of the stray current reference electrode in accordance to the BS EN 50122-2 Code of Practice

• To provide an effective stray current monitoring and control system in accordance with the requirements of the underground track structures under civil & structures scope of works comprises of ZRE, Rebar Connection Box and ITB for interface with and by others as shown in the below diagram of a typical layout for zinc reference electrodes at stations

Download our Stray Current Control Monitoring System Catalogue here