Specifications

Enquiry Specification for Wagon Tippler with Side Arm Charger and Associated works

NRO/CON/WT/533

EPI – New Delhi Volume-2B, Rev.0 Page 20 of 63

(O) HYDRAULIC PIPE LINE ERECTION, TESTING, PICKLING, FLUSHING AND

COMMISSIONING

Hydraulic pipe work shall be assembled, pressure tested, pickled, flushed and

commissioned as per piping instructions given by the system designer /

consultant.

Provision of pipe line pickling and flushing facility shall be in the scope of work

(provision of separate tank, pumps filters elements, pickling and flushing fluids

shall be the supplier’s scope).

Supply of minimum 50 nos. of spare filter elements of each type along with the

hydraulic system at the time of Erection, Testing and Commissioning shall be in

the supplier’s scope of supply.

Oil cleanliness shall be checked during commissioning and facilities for checking

and monitoring oil cleanliness shall be in the bidders scope of supply.

Suppliers Scope of Work in hydraulic pipe work shall also include :-

1) Equipment Supplier shall give a comprehensive cleaning and flushing scheme

for hydraulic systems and provide necessary facilities to carry out the

activity.

2) Adopt cleaning and flushing guidelines from ISO 5910.

3) Hydraulic System cleaning and flushing documents shall be part of

acceptance checks in the Quality Assurance Program. Compliance to this shall

be reported in the overall QAP.

4) Develop a plan for how to systematically control hook-up of subsystems into

the main system. Documentation of results as part of the total flushing

procedure. Describe cleaning and flushing connections and looping methods

along with the details of components required to carry out the above.

5) Suppliers to specify sampling points to be used for condition monitoring

during flushing and in service.

6) Connection program after cleaning and flushing is over with built-in check for

prevention of contaminants during connections and assembling.

7) Acceptance norms shall be given by the Equipment Designer / Supplier.

(P) All pipelines shall be of seamless type clamped with polypropylene heavy series

clamps. However, in the hot zone heavy series aluminum clamps shall be used.

(Q) All hydraulic pipe lines shall be painted as per the standard color mode.

(R) Special Conditions for hydraulics:

1) Off line filtration shall be provided and Differential pressure shall

not

less than