This specifcation detail the requirements for the design ,selection,supply, delivery and commissioning of conveyor belt protection instruments and systems.This specification addresses issues related to the design and selection of equipment for the designer as well as the specification of such equipment to the supplier.
2 TECHNICAL REQUIREMENTS TO BE SPECIFIED BY THE ENGINEER
The Engineer shall specity project information, including:
Title the project
Reference number for tender
Issue,data and revision of this specification to be used
For the purpose of this specification the following definitions shall apply
BS : British Standards
FAILSAFE : A system which defaults to a safe state under failure conditions
HAZOP : Hazard and Operaqbility Study
IEC :International Electrotechnical Commission
IP : Ingress Protection
MCC: Motor Control Centre
PFD: Process Flow Diagram-Schematic Iustration of the Systern
PID : Project Initiation Document -Key Information Required to Start Project
PLC : Programmable Logic Controller
The following terms are defined in the General Conditions of Contract
Angla Ameriacan,Approved ,Company ,Contractor ,Engineer
Belt magnets shall be provided where necessary to protect the conveyor belt by removing magnetic objects.A magnrtic detector shall be fitted after the belt magnet to trip the conveyor belt in the event of failure of the removal action Personnel and Equipment protection requirements.
Pre start warning systems
Pre start warning devices shall be installed along the entire length of the conveyor belt system to warm personnel that the conveyor belt is about to start moving.
The following important points should be noted:
The pre start warning devices shall be audibly and visually detectable alongside the entire length of the conveyor belt installation.
The pre start warning signal shall be activated and in operation for at least 20 seconds(configurable )before the coveyor belt drive is started.
The pre start warning signal shall reman in operation until such time as the conveyor belt is moving along its entire length.