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Leaderflush Shapland has developed the Leadline range of doorsets providing various levels of X-ray protection while accommodating all the standard Leaderflush Shapland facing options to match our other standard performance doorsets.

Performance

X-Ray Protection
Leadline AS doorsets incorporate lead sheeting in a range of thicknesses and this protection extends through the door frames, forming an effective barrier to radiation in all directions. Particular care is taken to ensure continuous protection and the lead sheeting is located closer to one door face so that it covers the lock-case.The appropriate lead thickness is designated using the British Standard code number (e.g.‘BS code 5 lead’ is 2.24mm thick). The controlling body for this requirement is the National Radiological Protection Board and guidance on the lead thickness necessary for specific situations should be sought from it.

Fire/smoke Resistance
Fire resistance of up to 60 minutes can be provided by the application of lead sheeting to a certified core construction combined with the use of appropriate intumescent sealing.

All fire rated products are manufactured strictly in accordance with the BWF-CERTIFIRE scheme. Where smoke control to BS 476 : Part 31.1 : 1983 is required, combined intumescent smoke seals will be provided.

Sound Reduction
Where the Leadline AS door leaf incorporates ‘code 7’ (3.15mm thick) lead and appropriate high performance acoustic seals are fitted, this assembly will provide sound reduction of 39 RwdB (see Audiodor 39/60).

Mechanical Strength
Leadline AS offers ‘Severe Duty’ performance to BS DD 171.

Construction

The Leadline X-ray door consists of a concealed lead sheet to the required specification. MDF each side forms either final facings for a paint quality door or the substrate for final facings of veneer, laminate, PVC or durable vinyl. Doors are lipped on 2 edges in 6mm hardwood as standard and lead fillets extend through the full thickness of lippings at meeting stiles of pairs of doors to ensure total shielding.

Frames

Frames are hardwood Mono section, 94mm x 69mm (finished), with lead lining to specification and 44mm x 15mm lead-lined architrave is provided as standard for radiation protection. Non-standard sections are also available on request.

Configurations

Both single and double leaf assemblies are available, with overpanels and side panels. Double leaf assemblies will incorporate astragals with lead to maintain performance at meeting edges.

Ironmongery

Leadline doors are hung on two pairs of high capacity J601BU hinges as standard, with all other ironmongery to specifier’s choice. However, the weight of the door should be taken into account when selecting door-closers or similar items.

Vision panels

Leadline doors (non rated only) can be supplied with apertures incorporating lead glass, with the corresponding X-ray performance.

Installation

Doorsets can be installed using traditional methods considering the assembly weight. Care must be taken to ensure that radiation shielding is continuous over the wall and frame junctions. X-ray protection doorsets are provided with a lead lined architrave to cover frame/wall void.