Safety cages

Steel ladder, with safety cage (Add 25% for aluminum) Lineal ft 76.00 t... 

Place the lid on the desiccator and open the tap and cover the desiccator with an appropriately sized safety cage (Fig. 5.19) to prevent injury from flying glass in the case of an implosion. 

Fig. 6.19 Vacuum desiccator (with mesh safety cage).

Figure 9.19 Walkway, handrails, stairwells, cable trays and safety cages were made at the Dow Stade membrane chlorine plant using epoxy vinyl ester resin. Chemical environments include sodium hydroxide, sodium hypochlorite and brine...

Figure 9.19 shows an installation at the Dow Stade membrane chlorine plant. It was built in 1996 by Techno Composites Domine Gmbh, using Bekaert profiles made with Derakane 440-40 epoxy vinyl ester resin. The installation includes stairwells, handrails, walkways cable trays and safety cages. GRP and pultruded profiles in particular were used for their resistance to the chemicals being handled - notably sodium hydroxide, sodium hypochlorite and brine. Their electrical resistance was also a factor in this electrochemical plant [11]. 

Appendix 15 on Safety Cage shows an example of dimensioning a solution of the extreme t5Tte, with the objective of listing the orders of magnitude of the dimensions and of the provisions required. 

A possible conceptual scheme is presented with the verification calculations. (The calculations and drawings are due to Dr Eng Giuseppe Pino.) The results of some experimental tests at a reduced scale performed several years ago on safety cages similar to the one described are presented. 

ERF Ltd of Sandbach, Cheshire produce lorry cabs clad with glass-reinforced plastics (GRP) panels. The panels are hot-press moulded from sheet moulding compound, (SMC) then fitted to the steel frame of the cab (the safety cage) using an ERF patented assembly technique. 

OSHA addresses this issue in a May 27, 2004 LOI in which the agency says, The 1910.27 standard which was promulgated in 1971 does not have grandfather provisions that would allow the fixed ladders built prior to the publication of the standard to be exempt from 1910.27 requirements. Therefore, ladders and associated safety cages (built and installed prior to the publication of the OSHA 1910.27 standard) which do not meet 1910.27 requirements must be retrofitted to meet 1910.27 requirements, if they are used by the employees of the workplace. ... 

A typical ladder detail is shown in Exhibit 12-1. Ladders with elevations of a maximum of 20 ft (6,100 mm) above grade do not require a safety cage. An 8-in (200-mm) open area behind the ladder should be maintained for toe clearance. Any obstruaion within this distance is a potential tripping hazard. 

When a caged ladder is located within 6 ft. of the edge of the deck, which has a maximum fall distance greater than 15 ft., special consideration is required Either the bars on the cage on the deck edge side should be extended to the handrail, or the handrails should be raised to within 24 in. of the bottom of the safety cage for 48 in. on either side of the ladder centerline. The extended bars on the cage should not restrict access to the ladder or to the walkway. 

Separate by barriers Machine guarding Air curtain Cars with safety cage... 

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