EHN1 Extension – Overhead Cranes Renovation

R. Rinaldesi – EN/HE27/11/2014

Overhead cranes renovation

Existing cranesPresentation of technical specification

(scope of supply and main requirements)Planning

PR 534 – PR 538

Manuafcturer: SEPAYear: 1976Capacity: 40 tonSpan: 46 mLifting height: 10 mPossibility to work in «tandem» mode

PR 534 – PR 538

Command: cabin sliding along one girderSafe access: only from crane girder

Auxiliary hoist: 5 ton

Technical specification• Technical specification prepared in 2013

(IT-3927)• Renovation will be ordered within contract

B1422 (frame contract)• Any technical requirements can still be

changed

Scope of supply (as per IT-3927)• Replacement of hoist trolley (same

capacity)

Scope of supply (as per IT-3927)• Replacement of long-travel mechanisms

(with the exception of wheels)

Scope of supply (as per IT-3927)• Replacement of all electrical installations

(cubicles, cables, feeding line)

Scope of supply (as per IT-3927)• New control cabin and auxiliary hoist (10

ton)

Main requirements - Crane operating area

existing 7650!

Main requirements – Access to the crane• Catwalks will be modified according to the

existing standards• Access to the cabin: a platform (provided by

crane manufacturer) will be installed on the end wall at the same height of the crane cabin

cabin

platform

Main requirements – Control• Crane equipped with PLC; possibility to

set-up «safety zones»• Possibility to operate in tandem mode (only

after renovation of both cranes!)• Load attached to the hook measured and

visible on a display

Planning• Renovation of each crane: 4 weeks• Replacement of electrical feeding line: 3

weeks• Recommended period: PR 538 (extension side): end of 2015PR 534: beginning of 2016

• Proper area for the intervention shall be identified