Volume-IF - JantERmantER

PEM-6666-0
TITLE SPECIFICATION NO. PE-TS-360-620-C001
TECHNICAL SPECIFICATION FOR
VOLUME: IIB
STACK ELEVATOR
SECTION C
REV 0 DATE
SHEET
OF
Damaged earth system conductors or cables shall be repaired or replaced by the Contractor as
directly by the Engineer-in-Charge.
Earth connections except equipment earthing connections shall be made by electric arc
welding. Bolted connections shall be used for earthing equipment.
Earthing bushings within all enclosures, including equipment enclosure, shall be wired together
and connected internally to the enclosure earthing lug at earthing bus with bare conductor.
Electrical equipment shall be earthed. Large equipment will be furnished with a earthing bus.
Most other equipment will be furnished with earthing pads and/or earthing lugs. Earthing
connection surfaces shall be cleaned immediately prior to connection. Contractor shall provide
all earthing material required but not furnished with the equipment. Where the earth conductor
is included with the power conductors in the motor circuit raceway a compression type earth
conductor termination shall be used and connected to the motor frame inside the motor
terminal housing. Where the earth conductor is not included with the power conductors in the
motor circuit raceway, the motor frame shall be earthed to the earth grid.
Suitable earthing facilities acceptable to the Engineer-in-Charge shall be furnished on motors
not so equipped. Earthing facilities shall consist of compression type earth conductor
termination bolted to the motor frame and providing a minimum of joint resistance. Conduit
system is not considered to be a earthing conductor. No earthing conductor shall be smaller in
size than 4 Sq. mm unless it is a part of an acceptance cable assembly.
7.00.0 INSPECTION AND TESTING
7.01.0 The following specific test as applicable shall be carried out by the Contractor as minimum
requirement for the elevators.
7.01.01 All materials used in manufacture of various components shall be of tested quality
and shall conform to relevant standards / specifications.
7.01.02 All welding shall be carried out as per welding procedures qualified as per ASME
Section-IX. Welding procedures shall be forwarded for approval. Only welders
qualified as per ASWME Section-IX shall be employed for welding.
7.01.03 All NOT operators should be qualified as per SNT-TC-IA.
7.01.04 All forgings shall be subjected to ultrasonic test to ensure free from internal defects.
7.01.05 All welds shall be subjected to dye-penetration test and visual examination.
7.01.06 All forged components shall be subjected to DP/MPI after machining.