APEA Blue Book Guidance for Petrol Filling Station Cable Duct Sealing

By Chris Dodds on 8th May, 2015

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APEA Blue Book Guidance for Petrol Filling Station Cable Duct Sealing

CSD RISE Sealing Systems have worked very closely with both APEA and NICEIC during the update of the ‘Blue Book’ wording with respect to safe sealing of cable ducts in petrol filling stations.

T&D are Main UK Stockists of the CSD RISE Duct Seal System.


Previously sealing cable ducts with expanding foams was accepted however the newer version looked to outlaw this method because it was not possible to guarantee the gastight integrity of cable ducts using these products.

CSD RISE cable duct sealing system is compliant with "Blue Book" guidance for petrol forecourt installations. 
Petrol forecourt applications must prevent the migration of gases and reduce the potential to create dangerous and explosive atmospheres. The main application on these types of projects are building entries into kiosks or control rooms.

Pictured : CSD RISE Rapid Cable Duct Seals

CSD RISE Rapid Cable Duct Seals

T&D supply approved NICEIC electrical contractors carrying out the specialised installation work associated with petrol and diesel pumps and their control systems.

CSD RISE cable duct seals are specified by most national supermarkets to provide a safe and reliable fire-proof seal to cables running through ducts on petrol station forecourts, including Sainsburys.

FIWA sealing putty is used in the CSD RISE duct sealing system to provide water, gas and fire seals to cable and pipe penetrations. Independent testing confirms FIWA sealant putty can be used for CSD RISE cable and pipe penetrations where occasional contact with petrol and diesel may occur. 


Congratulations CSD

CSD’s RISE Duct Sealing System has the 2014 ‘Innovation Award’ at the annual APEA (Association of Petroleum Explosives Administration) Live Awards. The APEA award highlights companies that continuously drive the industry forward and make a significant impact on the sector with their innovational products.



The extract is as below ;

APEA Blue Book : 14.9.7 Sealing Of Underground Cable Ducts
Other than for force ventilated duct systems, it is of the utmost importance that after cables have been installed and tested, and before any vehicle fuel is brought on site, all ducting terminations are adequately sealed in underground chambers, at dispensers and particularly where ducting passes from hazardous to non-hazardous areas, for example, where entering buildings.

Suppliers of mechanical seals, foams and fillers intended for this application should be asked to demonstrate their compatibility with petroleum products or other VOCs in liquid or vapour form. Sealing should be achieved preferably with mechanical seals. Alternatively, sealing may be achieved with suitable compound or other material resistant to petroleum products, or other VOCs in liquid and vapour form.

Conventional builders’ foams or filler are not suitable for this purpose. Suppliers of foams or fillers intended for this application should be asked to demonstrate their compatibility with petroleum products or other VOCs and the intended hazardous materials used on the premises. Where sealing compound is used to seal a duct, the inner wall of the duct and the cable sheath(s) should first be cleaned to ensure that the sealant adheres to the surfaces.

Suitable spacers should then be inserted to space the cables apart to ensure that the compound is able to completely fill the spaces around the cables and also to minimize penetration of compound further into the duct. All spare and unused ducts should be fitted with blind mechanical seals.

Where it is established that VOC has been present in a duct or chamber an inspection should always be carried out to determine the continued integrity of any duct sealing. Cable chambers and pre-formed cable trenches should not be sand filled and/or screeded, since this simply conceals any leakage and accumulation of fuel, and adds considerable difficulty to any future access for repairs.

Category:  Cable Transits & Duct Sealing

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