| OPERATION
AND MAINTENANCE |
| |
|
| 5.1
|
In
selecting the type of treatment process, the designers
should take due consideration of the availability of competent
operators.
|
|
|
| 5.2 |
Only competent technicians should be assigned to operate
the STP. The operator should be fully conversant with
the recommended operating procedures as stipulated in
the operation and maintenance manual.
|
|
|
| 5.3
|
If
any part of the STP has to be covered, open mesh flooring
should be used to allow easy visual inspection. Concrete
covers should be avoided as far as possible. If concrete
cover slabs have to be used, they should be liftable by
two men, i.e. total weight should be less than 60 kg.
|
|
|
| 5.4 |
Screenings should be removed daily and therefore screen
locations should be so designed to enable easy screenings
removal. Screenings should be dripped dry and packed in
heavy duty polythene bags for subsequent disposal. |
| |
|
| 5.5 |
The STP should be kept in a tidy state by good housekeeping.
This includes regular hosing down and scraping the walkways,
whitewashing the walls, cleaning and painting metal works,
maintaining adequate lighting and ventilation etc. |
| |
|
| 5.6 |
Spare parts sufficient for 2 years operation as per manufacturers'
recommendation should be provided with the equipment supply. |
| |
|
| 5.7
|
Powder
type fire extinguishers and a first-aid box should be
provided in an easily accessible area in the plant. Life-buoys
should be placed near deep, open liquid containing tanks. |
| |
|
| 5.8 |
An operation and maintenance manual should be submitted
for approval. The copy that is to be placed in the STP
should be in ring binder format with all papers laminated
or enclosed in plastic. It should contain at least the
following information, with an essential summary in Chinese:
- name
and address of designer and contractor and date of
installation;
- process
and instrumentation diagram;
- detailed
description of treatment processes;
- control
mechanism;
- wiring
diagram;
- operating
procedures for all treatment processes including likely
operating problem and trouble shooting techniques;
- routine
maintenance schedule for all processes and equipment
(daily, weekly, monthly, annual checklists etc.);
- start
up and shut down procedures;
- equipment
schedule with name and contact address of local agents;
- list
of spare parts provided on site and recommended stock
levels at which new orders must be placed;
- sampling
and testing frequency and procedures for on-site testing;
- emergency
procedure (fire, power failure, etc.);
- plant
safety precautions;
- sample
log sheets.
|
|
|
| 5.9 |
A Chinese version of the daily work schedule, laminated
or enclosed in plastic should be provided in the STP. |
|