Constructional Features:
Structure:
The shelter consists of self framing exterior skin assembled on a rigid superstructure. The super structure is made up of 3mm folded sheet of CRCA or Stainless Steel. It consists of main frame members and load bearing members. The construction is such that the weight of the items installed inside the shelters is transferred on the main frame and load bearing members.

Body: Depending on specific customer requirement, the external & internal bodies are made up of sheet steel or stainless steel. The two layers are separated by a gap of about 50mm and the space is filled up by using Rockwool/Glasswool (other specified gap and insulation is also available on request).This layer of insulation provides protection against temperature variations in the atmosphere. The outer sheet is normally corrugated, while the interior is plain. Other patterns can also be made on request.

Mounting: Various components inside the shelters like analyzers and power distribution equipment are mounted using standard ‘C’ channel or ‘X’ channel arrangement with pre fabricated mounting hardware.

Door: Normally, two doors are provided in our shelters - one for normal use and the other for emergency purpose. The standard locking system used is the 3 point heavy duty locking system. Doors are mounted on sturdy external hinges. Continuous XLPE gasketting is applied along the door periphery to provide dust proofing. The main door is provided with double glass window with automatic spring door closure, is outward opening and has outside padlock holes. The emergency doors allows opening of the door from inside with an emergency panic bar, in case the door is locked from inside.

Base: The base of shelters is constructed by ISMC-100/150/200.The selection of ISMC channel depends on the size and type of the shelter.

Hinge: The hinges are specially designed, made of SS/MS and passivated with Zinc. These are robust & screwed on the door, thus providing safety against burglary.

Electrical accessories: The electrical connections inside the shelter are made keeping in mind hazardous area classification. In general, the items used are as per CENELEC standard. Separate Ex-proof junction boxes for power distribution, signals and alarms are provided. Wiring inside the shelter can be done as per customer requirements.
Internal lighting is done by means of fluorescent lamps, mounted flush with the ceiling. In general, the internal lighting is suitable for Zone- 1 area, and is installed near the doorway. Further flameproof external lights are installed on the underside of canopies. This facilitates maintenance of the sampling system.