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Alimak Hek meet hazardous zone requirements with an explosion-proof lift

North Rankin Gas Platform, North West Shelf, Indian Ocean, Australia

Alimak Hek configure the Alimak SE 1200 industrial lift with an explosion-proof rating to meet the hazardous zone requirements of the North Rankin A gas platform. With external call stations for non-man riding, the luggage lift may be called, loaded, and directed to the required level.

Located 135km north-west of Karratha, the NRA platform is one of the largest capacity gas production platforms in the world, producing more than 51,000 tonnes of gas and gas condensate daily.

In March 2012, Woodside installed an Alimak SE 1200 industrial lift, with explosion-proof rating, on the North Rankin A platform. Available for use 24-hours a day, the luggage lift services the accommodation facilities on board the platform, transporting workers’ luggage from the top of the accommodation module to the South Bridge Pedestrian Landing.

Given the lift’s location on an offshore gas platform, hazardous zone requirements dictated the lift be configured with an Ex-rating. Alimak Hek worked closely with the client to ensure the lift met both the client specifications and zone requirements. To achieve an Ex rating, the lift was designed and manufactured in compliance with the designated hazardous area requirements, classified under Zone 2, Gas Group IIA and Temperature Class T3. In accordance with the Ex-rating of the lift, Alimak Hek provided complete Ex documentation and commissioning work packs for both the onshore and offshore installation phases.

As the lift was required to provide a safe, all-weather means of transporting luggage on board the platform, it was necessary that the lift be fitted with external call stations for non-man riding. In accordance with client specifications, Alimak Hek modified the electrical control circuit to allow for use of the ‘call and send’ feature. Given the luggage lift was for transporting of materials only, these external controls allowed personnel to operate the lift without the need to travel inside it. In this way, operators could ‘call’ the lift using external call switches located on both the Passenger Living Quarters Roof and the South Bridge Pedestrian Landing, and then ‘send’ the lift to the required level . 

The Alimak SE-Ex 1200 lift has been in operation on the North Rankin A platform since March 2012. Designed for intermittent service, the luggage goods lift has an expected life of 30 years minimum with regular maintenance.

Elevator details

Location
North Rankin A Platform, Indian Ocean, Australia
Product Model
ALIMAK SE-Ex 1200
Application
Gas production platform, luggage lift
No. of Landings
2
Capacity
1200 kg
Car size
1.6 m x 1.7 m
Speed
0.6 m/ sec
Lifting height
11m
North Rankin A Platform

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