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175 c c a a b 175 800 750 1 STAINLESS STEEL ANGLE FLOOR OUTSIDE SUBSTATION 1700 400 A A 100 100 1600 13 BOLT SEE DETAIL D ON R.C.C. CANOPY 75x75x9 STAINLESS STEEL DOOR FRAME EMBEDDED IN WALL WITH x9 STAINLESS STEEL STOPPER 19 LOCK BAR STAINLESS STEEL LOCK BAR AND LOCK PLATE SEE DETAIL C ON 13 STAINLESS STEEL HANDLE ( BY WELDING ) STAINLESS STEEL HINGE AND GREASE NIPPLE SEE DETAIL A & B ON 13 BOLT SEE DETAIL D ON MIN. 2600 WALL STAINLESS STEEL ANGLE 60 200 SUBSTATION FLOOR 120 DO NOT SCALE 1 st ANGLE PROJECTION R.C.C. CANOPY 300 1 150 100 75x75x9 STAINLESS STEEL DOOR FRAME EMBEDDED IN WALL WITH x9 STAINLESS STEEL STOPPER 3mm THICK STAINLESS STEEL PLATE S/S DOOR IN ONE PIECE STAINLESS STEEL HINGE AND GREASE NIPPLE SEE DETAIL A & B ON STAINLESS STEEL LOCK BAR AND LOCK PLATE SEE DETAIL C ON 13 STAINLESS STEEL HANDLE ( BY WELDING ) 13 BOLT SEE DETAIL D ON FLOOR OUTSIDE SUBSTATION FRONT VIEW SECTION A - A MIN. 80 MIN. 2000 MIN. 80 DOOR HEIGHT IN mm a/mm b/mm c/mm 2600 500 550 750 2800 550 650 850 SEE NOTE: THIS DRAWING IS TO BE READ PLAN FOR DETAILS EXACT DOOR HEIGHT SPECIFIED IN SUBSTATION LAYOUT DRAWING IN CONJUNCTION WITH DRAWING No. P237/93/R-5 ALL DIMENSIONS IN mm 4 5/2011 SPECIFIED YL Title Drawing No. 3 9/2008 DRAWING No. P237/93/R-4 SPECIFIED 2 12/2007 DOOR HINGES REVISED 1 6/2005 DRAWING No. P237/93/R-2 SPECIFIED Rev. Date Description YL CKLam STKC Eng. dp_p59203r4.dgn STANDARD SUBSTATION STAINLESS STEEL DOUBLE LEAF DOOR ( WITHOUT LOUVRE ) P592/03/R-4 Drawn By Scale Date W.M. POON 1:20 MAY, 2003 A3 297 x 420

175 c c a a b 175 800 750 STAINLESS STEEL ANGLE FLOOR OUTSIDE SUBSTATION 1 1700 A A 100 100 400 13 BOLT SEE DETAIL D ON 1600 R.C.C. CANOPY 75x75x9 STAINLESS STEEL DOOR FRAME EMBEDDED IN WALL WITH x9 STAINLESS STEEL STOPPER 6 RIVETS AT APPROPRIATE SPACING 600Wx500H STAINLESS STEEL LOUVRES 19 LOCK BAR STAINLESS STEEL LOCK BAR AND LOCK PLATE SEE DETAIL C ON 13 STAINLESS STEEL HANDLE ( BY WELDING ) STAINLESS STEEL HINGE AND GREASE NIPPLE SEE DETAIL A & B ON 600Wx500H STAINLESS STEEL LOUVRES WITH REMOVABLE 10mm STAINLESS STEEL WIRE MESH ON INSIDE AT MIN. 300 ABOVE SUBSTATION FLOOR 13 BOLT SEE DETAIL D ON MIN. 2600 WALL STAINLESS STEEL ANGLE 60 200 SUBSTATION FLOOR 120 DO NOT SCALE 1 st ANGLE PROJECTION R.C.C. CANOPY 300 1 150 100 75x75x9 STAINLESS STEEL DOOR FRAME EMBEDDED IN WALL WITH x9 STAINLESS STEEL STOPPER 3mm THICK STAINLESS STEEL PLATE STAINLESS STEEL HINGE AND GREASE NIPPLE SEE DETAIL A & B ON STAINLESS STEEL LOCK BAR AND LOCK PLATE SEE DETAIL C ON 13 STAINLESS STEEL HANDLE ( BY WELDING ) LOUVRE SEE DETAIL E ON 13 BOLT SEE DETAIL D ON FLOOR OUTSIDE SUBSTATION FRONT VIEW SECTION A - A MIN. 80 MIN. 2000 MIN. 80 DOOR HEIGHT IN mm a/mm b/mm c/mm 2600 500 550 750 2800 550 650 850 SEE PLAN FOR DETAILS EXACT DOOR HEIGHT SPECIFIED IN SUBSTATION LAYOUT DRAWING THIS DRAWING IS TO BE READ IN CONJUNCTION WITH DRAWING No. P237/93/R-5 ALL DIMENSIONS IN mm 4 5/2011 SPECIFIED YL Title Drawing No. 3 2 1 Rev. 9/2008 12/2007 6/2005 Date DRAWING No. P237/93/R-4 SPECIFIED LOUVRES AND DOOR HINGES REVISED DRAWING No. P237/93/R-2 SPECIFIED Description YL CKLam STKC Eng. dp_p59103r4.dgn STANDARD SUBSTATION STAINLESS STEEL DOUBLE LEAF DOOR ( WITH LOUVRES ) P591/03/R-4 Drawn By Scale Date W.M. POON 1:20 MAY, 2003 A3 297 x 420

A DO NOT SCALE 1 st ANGLE PROJECTION WALL 75x75x9 STAINLESS STEEL DOOR FRAME EMBEDDED IN WALL WITH x9 STAINLESS STEEL STOPPER STAINLESS STEEL ANGLE SEE DETAIL A 13 STAINLESS STEEL HANDLE ( BY WELDING ) 150 1450 550 750 350 350 STAINLESS STEEL LOCK BAR AND LOCK PLATE WITH PIN & HINGE ( TO SWING DOWNWARDS WHEN NOT IN USE ) 175 650 700 650 MIN. 2300 STAINLESS STEEL ANGLE 200 60 150 75x75x9 STAINLESS STEEL DOOR FRAME EMBEDDED IN WALL WITH x9 STAINLESS STEEL STOPPER 3mm THICK STAINLESS STEEL PLATE S/S DOOR IN ONE PIECE STAINLESS STEEL LOCK BAR AND LOCK PLATE WITH PIN & HINGE ( TO SWING DOWNWARDS WHEN NOT IN USE ) 13 STAINLESS STEEL HANDLE ( BY WELDING ) STAINLESS STEEL HINGE AND GREASE NIPPLE SEE DETAIL A & B ON STAINLESS STEEL ANGLE 150 HIGH DOOR SILL SUBSTATION FLOOR SUBSTATION FLOOR 1 SUBSTATION FLOOR A 1 175 STAINLESS STEEL LOCK BAR AND LOCK PLATE WITH PIN & HINGE ( TO SWING DOWNWARDS WHEN NOT IN USE ) 19 LOCK BAR ( INSIDE DOOR ) SEE DETAIL B NOTE: THIS DRAWING IS TO BE READ IN CONJUNCTION WITH DRAWING No. P237/93/R-5 FRONT VIEW SCALE 1 : 20 SEE DETAIL A & B ON MIN. 920 MIN. 80 7mm WIDTH SLIT ON BOTH DOOR SURFACES FOR SLIDING THE LOCK PLATE 150 HIGH DOOR SILL WALL SEE PLAN SCALE 1 : 20 FOR DETAILS STAINLESS STEEL HINGE AND GREASE NIPPLE STAINLESS STEEL SLEEVE EMBEDDED FOR LOCK BAR MIN. 100 160 DETAIL A SCALE 1 : 10 EDGE OF DOOR 7mm WIDTH SLIT ON BOTH DOOR SURFACES SECTION A - A SCALE 1 : 20 FOR SLIDING THE LOCK PLATE PIN & HINGE STAINLESS STEEL LOCK PLATE TO SWING DOWNWARDS WHEN NOT IN USE MIN. 100 200 50 50 200 DETAIL B SCALE 1 : 10 STAINLESS STEEL SLEEVE EMBEDDED FOR LOCK BAR LOCKING BRACKET 19 LOCK BAR 7mm WIDTH SLIT ON BOTH DOOR SURFACES FOR SLIDING THE HANDLE STAINLESS STEEL LOCK PLATE TO SWING DOWNWARDS WHEN NOT IN USE ALL DIMENSIONS IN mm 5 5/2011 SPECIFIED YL Title 4 9/2008 DRAWING No. P237/93/R-4 SPECIFIED YL 3 12/2007 DOOR HINGES REVISED CKLam 2 6/2005 DRAWGING No. P237/93/R-2 SPECIFIED STKC 1 5/2003 DOOR HANDLE FROM DOOR EDGE SPECIFIED STKC Rev. Date Description Eng. dp_p47900r5.dgn STANDARD SUBSTATION STAINLESS STEEL PARTITION DOOR ( PULL IN HV COMPARTMENT ) Drawing No. P479/00/R-5 Drawn By Scale Date W.M. POON AS SHOWN 31 MAR., 2000 A3 297 x 420

DO NOT SCALE 1 st ANGLE PROJECTION 55 6mm THICK GREASE NIPPLE UPPER HINGE ARM WELDED & RIVETTED TO DOOR FRAME 20 STEEL BALL DOOR WIDTH THREADED FOR GREASE NIPPLE CONICAL 5 Nos. 7mm DIA. X RIVETTED HOLE 100 80 HARDENED PIN OF MIN. 10mm DIA. WITH MIN. 60mm PENETRATION X COMPRESSION 14-16 SPRING SECTIONAL VIEW FRONT VIEW DOOR FRAME SWING 180 SWING 180 DOOR LEAF TO BE DOOR LEAF TO BE DOOR FRAME 75 DOOR FRAME OPENED FIRST CLOSED FIRST 2 Nos. WASHER mm DIA. HARDENED ROD WITH HARDENED PIN 6mm THICK LOWER HINGE ARM WELDED ( FULL SEAM WELDING ) TO DOOR FRAME 100 DETAIL B THE BRASS GREASE NIPPLE PLAN STAINLESS STEEL ANGLE INSIDE SUBSTATION DETAIL A 55 ELEVATION 75 60 PLAN ( STANDARD DOOR ) DOOR WIDTH 5 FLOOR OUTSIDE SUBSTATION DOOR STOPPER DOOR HEIGHT THE HINGE OF STAINLESS STEEL 24 DOOR FRAME SWING 180 DOOR FRAME 75 DOOR LEAF 60 40 AXIAL OF SUBSTATION FLOOR 6mm THICK 6mm THICK LOCK BAR UPPER HINGE ARM WELDED & RIVETTED TO DOOR FRAME PLAN LOWER HINGE ARM WELDED TO DOOR FRAME GREASE NIPPLE SCREWED IN POSITION LOCK BAR BRACKET A STAINLESS STEEL ANGLE PLAN INSIDE SUBSTATION 1 75 ELEVATION 150 ( SINGLE DOOR ) 40 40 ALL-AROUND WELDING TO BE APPLIED 40 40 JUNCTION OF DOOR LEAF 75 LOCK BAR BRACKETS OF 5mm STAINLESS STEEL PLATES WELDED TO DOOR PLATE 24 HOLE FOR BRACKET B, C & D 8 19 A B C D 19 LOCK BAR 200 19 LOCK BAR WELDING TREATMENT STIFFENER 3mm THICK DOOR PLATE NOTES: DETAIL C THE LOCK BAR OF STAINLESS STEEL SEMI-SPHERICAL END 12mm WIDE SLOT ON STILE WELDED TO DOOR FRAME 13 HANDLE BY WELDING 100 100 FRONT VIEW 5mm THICK LOCK STILE WELDED TO LOCK BAR & SHARP EDGES AT STILE SHALL BE GRINDED TO AVOID INJURY TO OPERATOR 5mm THICK LOCK PLATE WELDED TO DOOR PLATE OUTSIDE FLOOR NOT EXCEEDING 17 60 60 SIDE VIEW 150 14 HOLE FOR HEC PAD LOCK 13 HANDLE BY WELDING FIXING BY SCREW/BOLT WILL NOT BE ACCEPTED UPPER LOUVRE 40 1.5mm THICK STAINLESS STEEL PLATE 30 20 INSIDE SUBSTATION WELDING TREATMENT 40 20 30 OUTSIDE SUBSTATION 500 1 ) 2) 3) 4) 5) THE DOOR FRAME, PLATE, ANGLE, ROD, RIVET, HINGE, ANCHORING COMPONENT, WIRE MESH, BOLT, NUT AND WASHER SHALL BE OF GRADE 316 STAINLESS STEEL. IN ORDER TO REDUCE LUSTROUS REFLECTION TO ROAD USERS, THE FINISHING OF DOOR SHALL BE SATIN AND TO FINISH No. 2B ACCORDING TO BS 1449, PART 2. THE HINGES FOR EACH LEAVE OF DOOR MUST BE DESIGNED AND CONSTRUCTED TO WITHSTAND THE OPERATING WEIGHT OF THE DOOR PLUS 50kgf ( ASSUMING AT CENTRE OF DOOR LEAVE ) IN ORDER TO CATER FOR THE WEIGHT OF ACCESSORIES WHICH THE HONGKONG ELECTRIC Co., Ltd. MAY INSTALL ONTO THE DOOR. MOVING PARTS OF HINGE SHALL BE WEATHER-PROOF. GREASE SHALL BE APPLIED ON BOTH SIDES OF THE WASHERS AT THE HINGES AND ON THE HINGE PIN BEFORE THE SUBSTATION IS HANDED OVER. THE HINGES SHALL BE WELDED AND RIVETED ON THE STAINLESS STEEL ANGLE OF THE DOOR. 17 HOLE ON BRACKET 13 LOCK BOLT 17 HOLE DOOR FRAME 6 STAINLESS 75 STEEL ANGLE DETAIL OF UPPER LOUVRE 6) WELDING TREATMENT AT THE DOOR SHALL BE SUITABLE FOR STAINLESS STEEL AND MUST NOT CREATE WEAK SPOTS AGAINST CORROSION AT THE WELDS. WELDING RODS OF GRADE 316 OR GRADE 317 STAINLESS STEEL SHALL BE USED. WELDING METHOD AND PROCEDURES MUST COMPLY WITH BS 4872. BRACKET 150 60 BRACKET WELDING TREATMENT STAINLESS STEEL AFTER WELDING, THE WELD SURFACE MUST BE BRUSHED CLEAN TO REMOVE ALL WELDING FLUX AND DIRT. THE SURFACE SHALL THEN BE SOLVENT-CLEANED TO REMOVE ALL RESIDUAL DIRT AND GREASE. AFTER DRYING, AN UNDERCOAT OF PRIMER FOLLOWED BY TWO COATS OF SILVER COLOURED ENAMEL PAINT SHALL BE ANGLE APPLIED ON THE WELD SURFACE. OPERATING ROD 60 BRACKET OPERATING ROD 150 60 10 HANDLE 10mm x 10mm SLIDE DOWN 3mm THICK DOOR PLATE 7) THE DOORS SHALL BE COVERED WITH THICK TRANSPARENT PLASTIC SHEETS AT THE TIME THE SUBSTATION IS HANDED OVER AND SUCH PLASTIC SHEETS SHALL NOT BE REMOVED UNTIL THE BUILDING CONSTRUCTION WORK IS COMPLETED, IN ORDER TO AVOID STAINING OF THE DOOR CAUSED BY SPLASHING OF CORROSIVE LIQUIDS USED ON SITE. WIRE MESH 20 30 8) FOR STANDARD DOOR, IT MUST BE ENSURED THAT A CLEAR PASSAGE OF NOT LESS THAN 400 SUBSTATION FLOOR 100 BRACKET 13 LOCK BOLT 17 HOLE LOWER LOUVRE 1.5mm THICK STAINLESS STEEL PLATE 2000mm WIDE BY 2600mm HIGH IS PROVIDED WHEN THE DOOR IS FULLY OPENED. IF THERE IS A CHANGE IN DIRECTION IN THE PASSAGE TO SUBSTATION, EXTRA WIDTH SHALL BE ALLOWED FOR AT THE TURNING SECTION AND IN THIS CASE, THE LENGTH OF HEC EQUIPMENT SHALL BE TAKEN AS 2000mm. 17 HOLE 6 LOWER VERTICAL LOCK BOLT 15 50 S/S 1700 FLOOR ON BRACKET UPPER VERTICAL LOCK BOLT CORNERS TO BE SHARP EDGE ROUNDED TO BE ROUNDED & STOPPER END GRINDED ( FOR UPPER VERTICAL LOCK BOLT 10 HANDLE WING-HEAD NUT FOR EARTHING WIRE CONNECTION INSIDE SUBSTATION WELDING TREATMENT STIFFENER 40 75 OUTSIDE SUBSTATION 500 9) LOUVRES AT THE DOORS SHALL BE INSTALLED FLUSH WITH THE EXTERNAL SURFACE OF DOOR. NO SHARP EDGES AT ANY EXTERNAL PART OF DOOR SHALL BE EXPOSED TO PEDESTRIANS WALKING BY. LOWER LOUVRES AT THE DOORS SHALL BE PROVIDED WITH REMOVABLE 10mm STAINLESS STEEL WIRE MESH AS SPECIFIED BY HEC. 10) EXCEPT FOR THOSE DOORS SWINGING OUTWARDS TO PUBLIC STREET OR LANE, STOPPER AT HIGH LEVEL SHALL BE PROVIDED FOR EACH DOOR LEAF. 11 ) SHOULD THERE BE ANY DEVIATION FROM THE DIMENSIONS SPECIFIED IN THE LOCK BAR DUE TO SITE SITUATION, THE LOCK BAR SHALL BE SO DESIGNED AND TESTED TO ENSURE THAT THE DOOR SHOULD STILL BE IN LOCKED CLOSE POSITION EVEN WHEN THE LEFT LEAF DOOR IS NOT SECURED IN CLOSED POSITION BY THE UPPER AND LOWER VERTICAL LOCK BOLTS. ONLY ) DETAIL D CORNERS TO BE ROUNDED DETAIL OF LOWER LOUVRE WIRE MESH FOR LOWER LOUVRE DETAIL E LOUVRES ALL DIMENSIONS IN mm 5 4/2011 GENERAL REVISION YL 4 11/2008 LOCK BAR REVISED AND NOTE 11 ADDED YL Title Drawing No. 3 2 12/2007 6/2005 LOUVRES AND DOOR HINGES REVISED GREASE NIPPLE REVISED CKLam STKC DETAILED REQUIREMENTS FOR SUBSTATION DOOR P237/93/R-5 1 5/1997 LOCK BAR REVISED Drawn By Updated By Scale Date Rev. Date Description Eng. dp p23793r5.dgn A2 594x420 W.M. POON W.M. POON NIL MAY, 97

DO NOT SCALE 1 st ANGLE PROJECTION A R.C.C. CANOPY 300 R.C.C. CANOPY 120 100 75x75x9 STAINLESS STEEL 75x75x9 STAINLESS STEEL DOOR FRAME EMBEDDED IN WALL WITH x9 DOOR FRAME EMBEDDED IN WALL WITH x9 STAINLESS STEEL STOPPER STAINLESS STEEL STOPPER 6 RIVETS AT APPROPRIATE SPACING WALL LOUVRES SEE DETAIL E ON 600Wx500H STAINLESS STEEL LOUVRES 3mm THICK STAINLESS STEEL ANGLE STAINLESS STEEL STAINLESS STEEL PLATE 19 LOCK BAR ANGLE STAINLESS STEEL LOCK BAR AND LOCK PLATE STAINLESS STEEL SEE DETAIL C ON LOCK BAR AND LOCK PLATE 13 STAINLESS SEE DETAIL C ON STEEL HANDLE ( BY WELDING ) 13 STAINLESS STEEL HANDLE ( BY WELDING ) 100 STAINLESS STEEL ANGLE 1450 750 350 350 550 600Wx500H STAINLESS STEEL LOUVRES WITH REMOVABLE 10mm STAINLESS STEEL WIRE MESH ON INSIDE AT MIN. 300 ABOVE SUBSTATION FLOOR 650 700 650 175 MIN. 2300 60 200 150 STAINLESS STEEL HINGE AND GREASE NIPPLE SEE DETAIL A & B ON FLOOR OUTSIDE SUBSTATION 1 175 SUBSTATION FLOOR 1 FLOOR OUTSIDE SUBSTATION A FRONT VIEW STAINLESS STEEL HINGE AND GREASE NIPPLE SEE DETAIL A & B ON SECTION A - A 920 MIN. 80 THIS DRAWING IS TO BE READ PLAN SEE FOR DETAILS IN CONJUNCTION WITH DRAWING No. P237/93/R-5 ALL DIMENSIONS IN mm 5 5/2011 SPECIFIED YL 4 9/2008 DRAWING No. P237/93/R-4 SPECIFIED Title Drawing No. YL 3 12/2007 LOUVRES AND DOOR HINGES REVISED CKLam 2 6/2005 DRAWING No. P237/93/R-2 SPECIFIED STANDARD SUBSTATION STAINLESS STEEL SINGLE DOOR P236/93/R-5 1 5/1997 LOCK BAR REVISED Drawn By Scale Date W.M. POON 1:20 MAY, 97 Rev. Date Description Eng. dp_p23693r5.dgn A3 297 x 420