LIEs: These Enclosures are normally constructed of 3mm CRCA and are made in our standard ALCOSY-30 system. The design of LIE is tested for IP-65 protection class and they thus provide complete protection against water and dust. Double interlocking doors are provided and are arranged for maximum possible access to the module interior. The doors are provided with 3 point locking arrangement and have concealed quick removable type hinges. The enclosures have access doors both on the front and the back sides. The interiors are illuminated with rapid start fluorescent fixtures.The lighting switches are door actuated. Power receptacles with disconnect switch are installed within the enclosure. These connections serve for power tools, portable hand lamp and other equipment. All enclosures are provided with grounding facility.

LIRs: The instrument racks are freestanding type and are constructed of suitable 6mm thick channel frame of steel.
The instrument racks are provided with a canopy to protect the equipment provided in the rack from falling objects ,water etc. The canopy is constructed of 3mm CRCA sheet. The racks also comply with the other requirements of the enclosure.


CONSTRUCTION FEATURES: :-
Bulkhead: Specially designed bulkheads that provide junction between impulse pipe and rack/ enclosure impulse pipe, are mounted on a bulkhead plate. All entries of impulse piping into the enclosure or rack are through these bulkheads. The internal layout and bulkhead terminations of the enclosures are so arranged that all impulse piping and blow down lines with headers run in one end of the enclosure and transmitters be mounted in the other end. This ensures that impulse piping/blow down lines are accessible from the back
doors and transmitters are accessible from the front side for easy maintenance.

Purge air: Continuous and intermittent purging is provided with necessary pressure regulator, pressure gauge, 3 way valve fittings, SS tubing and individual purge ROTAMETER. This is generally provided for fuel gas and coal mill impulse piping.

Instrument piping and tubing: All piping and tubing material used is hydrostatically tested at one and a half times the maximum design pressure. However, for lower pressure and vacuum conditions, the testing is done as per piping standards.