Fire Door Inspection & certification

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CDG provides fire door inspection as per IS 3614-1 & NFPA 80.

IS : 3614 ( Part I ) - 1966 
be riveted to the back vertical edge of the door extending the full height of the door. 
If the door is stiffened with T-bar as specified above or has an angle iron not less than 35 X 35 X 6 mm riveted to the lower edge of the bottom rail, the frame need not have a channel at the bottom if a projecting sill of brick or cement concrete, not less than 100 mm thick and extending 150 mm beyond the opening on both sides is formed, or a sill of steel plate at least 6 mm thick, bolted or screwed to the frame extending the full thickness of the wall and projecting at least 25 mm beyond the outer face of the door is provided. 
1. In order to keep the lower channel clear of refuse, a slot shall be made at the bottom of each side of the frame. 
2. Metal Covered Doors 
2.1 The door shall be without panels and the core shall be construc- ted of layers of planed, tongued and grooved, thoroughly seasoned teak or yellow pine boards not less than 22 mm in thickness. The boards forming the outer layers shall be in single lengths, but the inner layer or layers may be made of not more than two pieces in any one length, provided that every length so formed shall be adjoined by a full length board on each edge. The boards shall be crossed at right angles and fastened together with iron nails shall be clenched. Immediately after completion, the core shall be treated with a coat of coal tar creosote conforming to IS : 218-1961*. 
2.2 The core of a door protecting an opening not exceeding 325 m- shall have not less than three layers of boards, but if the openin exceeds 325 m^ there shall be not less than four layers. 
2.3 One layer less than those specified in 6.2.2 may be used, provided that the wood core be completely covered with sheets made of a hard composition of asbestos and other incombustible mineral ingredients not less than 3 mm in thickness. 
2.4 The core shall be completely encased in charcoal tinned plate ( terneplate ) not exceeding 350 mm x 500 mm and not less than 050 mm thick coating or tinning. 
2.5 The sheets shall be lock-jointed and not sf)ldered, and tlie width of the lock joints shall be not less than 10 mm. All horizontal and mitre joints shall be formed facing downwards. The sheets cover- ing the edges of the core shall be turned roimd at least 50 mm on each face. 
2.6 The sheets shall be attached closely to the core with screws or barbed nails penetrating at least three-quarters of the thickness.

2.7 The whole of the processes described in 6.2.1 to 6.2.6 shall be completed within a period of two weeks. 
2.8 All doors shall be given one coat of red oxide, red lead or graphite paint before leaving the works and two coats of oil paint immediately after erection. 
2.9 Cast-iron shall not be used for any parts or fittings of doors and no lead or wood shall be used in fixing. 
2.10 All bolt-straps or clips, sockets, latches, catches, hinges, pivots and other fittings shall be bolted through the door, and/or bolted through or welded or riveted to the frame except as otherwise specifically desired by the purchaser. 

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CDG provides fire door inspection as per IS 3614-1 & NFPA 80.
 One of the fire safety requirements to be taken into consideration while planning and designing industrial and non-industrial buildings is to provide the means for restricting the spread of fire, both internally and externally. The spread of fire can be minimized if the respective floor areas are limited and divided into smaller sections, each section being separated by perfect separating walls and openings therein fitted with fire-check doors. The design of fire-check doors and the materials to be used in their construction have to be such that the doors shall be capable of providing an effective barrier to the spread of fire. The fire resistance of two doors should, as far as practicable, be the same as for the wall. This standard has been prepared with a view to providing adequate guidance to both the manufacturer and the user in regard to the materials to be used and the construction to be adopted for fire-check doors capable of giving the required fire protection. 
As erection of fire-check doors Is a very important aspect in order to achieve the desired degree of fire protection, it is strongly advised that the fire check doors should be erected strictly in accordance with the requirements given in Appendix A of this standard. 
In the formulation of this standard due weightage has been given to international co-ordination among the standards and practices prevailing in different countries in addition to relating it to the practices in the field in this country. 
For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated. Providing and fixing of Hollow metal fire rated doors as per IS 3614 part-1 & part-2 for stability and integrity. Pressed Galvanized steel confirming to IS 277 with the following specification.
Recommended fire door shall have doors tested at CBRI or ARAI for maximum rating of 2hrs with vision panel. Test certificates should be available for vision lites /panels as part of the fire door assembly. Independent glass test certificates will not be accepted. Manufacturer test certificate shallcover doors both single and double leaf and all doors supplied should be within the tested specimen,deviation in specification and sheet thickness other than what is mentioned in the test certificates are not allowed. Proper label confirming the type of door and the hourly rating is mandatory. Approved manufacturer Shakti Hormann or approved equivalent.
Door frame shall be double rebate profile of size 143 x 57 mm made out of 1.60mm (16gauge) minimum thick galvanized steel sheet. Frames shall be Mitered and field assembled with self tabs. All provision should be mortised, drilled and tapped for receiving appropriate hardware. Rubber door silencers should be provided on the striking jamb. Frames should be provided with back plate bracket and anchor fasteners for installation on a finished plastered masonry wall opening. Once frame installed should be grouted with cement & sand slurry necessary for fire doors on the clear masonry opening. Door leaf shall be 46mm thick fully flush double skin door with or without vision lite. Door leaf shall be manufactured from 1.2mm (18guage) minimum thick galvanised steel sheet. The internal construction of the door should be rigid reinforcement pads for receiving appropriate hardware. The infill material shall be resin bonded honeycomb core. All doors shall be factory prepped for receiving appropriate hardware and provided with necessary reinforcement for hinges, locks, and door closers.

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Fire Door Inspection As Per NFPA 80 & IS 3614-1CDG provides fire door inspection as per IS 3614-1 & NFPA 80.CDG is a leading Inspection organization in India.CDg is an ISO 17020 accredited Inspection and ISO 17025 accredited testing Services in all over India.
IS : 3614 ( Part I )'- 1966 expressing the result of a test or analysis, shall be rounded off in accordance with IS: 2-1960*. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard. 
1. SCOPE : This standard lays down the requirements regarding materials and details of construction of steel plate, metal covered and rolling type of fire-check doors for the protection of openings in walls or floors to restrict the spread of fire within buildings whether from internal fire or from external fire. 
2. TERMINOLOGY 
2.0 For the purpose of this standard, the following definitions shall apply. 
2.1 Single Fire-Check Door — One door shutter constructed for fitting on one side to an opening. 
2.2 Double Fire-Check Door — Two single fire-check door shutters as defined in 2.1 for fitting one on each side to an opening. 
3. TYPES 
3.1 Fire-check door shall be of the following types: 
a) Steel plate doors, 
1)) Metal covered doors, and 
c) Rolling steel shutters. 
4. SIZES 
4.1 Steel Plate Doors and Metal Covered Doors — The size of steel plate doors and metal covered doors shall suit the size of opening which shall neither exceed 5 m^ in area nor shall be more than 2' 10 m in width or 2 "75 m in height. 
4.2 Rolling Steel Shutters — The size of rolling steel shutters shall suit the size of doorway which shall neither exceed 5 m2 in area nor shall be  more than 2"4 m in width or 2' 10 m in height, measured between  the faces of the reveals of opening or projecting jambs and froiri  the floor of the opening to the underside of the barrel. 
5. MATERIAL 
5.1 Mild Steel Plates, Sections, etc — Mild steel plates, sections, etc, used in the construction of fire-check doors shall conform to Grade St 32-0 of lS: 1977-1962*. 
5.2 Timber : Timber boards used in the construction of metal covered doors shall be of thoroughly seasoned teak or yellow pine wood. The boards shall be kiln-dried for a period of at least 48 hours with a finishing temperature of at least 107°C during the last 12 hours. The moisture content of seasoned timber when used in door shall not be more than 15 percent. Immediately after their removal from the drying kiln and whilst still hot they shall be thoroughly impregnated by immersion in hot coal tar create conforming to IS.
We at CDG are committed to improve business performance of our clients/customers with effective certification of management systems, inspection and verification and add value to the process/system during surveillance audits.
CDG has designed and implemented a certification of the management system modeled along the lines of National & International Standards.
CDG aims at providing independent, impartial, non-discriminatory assessment & certification via cost effective manner and accessible within defined and approved scope of certification.