CD 52 Subsea Non-Intrusive Pig Signallers

The CD 52 A30 (down to 3000m water depth) and A45 (down to 4600m water depth) sub-sea non-intrusive pig signallers were developed from the CD 52 non-intrusive pig signaller and is based on tried and tested technology.


The simple, but effective design relies upon a patented non-intrusive antenna that ensures that the unit is not triggered by nearby magnetic noise or interference.

The easily portable robust units weigh 16kg and can be simply deployed by diver or ROV alike. Potential galvanic corrosion is prevented by fitting composite isolation pads between the protection cage and the pipeline. Once installed topside signalling is achieved by a battery powered acoustic pinger which can signal pig passage to the support vessel through the receiving acoustic transducer. This means that the reliable system is fully independent and can be operated from any vessel. By default the unit also continues to indicate pig passage for 36 hours following passage.

Standard or purpose designed pigs can be simply fitted with small high powered magnets or alternatively with an electro-magnetic transmitter depending upon client requirements.

Powered by 2 D-cell lithium batteries, the units are designed to be fully self-sufficient for a period of 5 years before the batteries require replacing. The common sense approach means that battery replacement is achieved by simply unscrewing the face of the unit, taking the old ones out and replacing with new ones.

Systems are available for short or long term hire or sale.

Pigging Products and Services Association
BSi Logo
ISO9001 Quality Management certificate
ISO14001 Environmental Management Certificate
ISO45001 Health & Safety Management Certificate
ROSPA 2024 Gold Medal Award
Achilles Oil and Gas Europe Gold Award
North East England Chamber of Commerce
Constructionline Gold Member
SEQual member
European Desalination Society Member
International Desalination and Reuse Association (IDRA)

Call +44 (0)1748 813270

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