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TRANSMISSION MATERIALS STANDARD SPECIFICATION 83-TMSS-01, Rev. 0

PAGE NO. 2 OF 12 

83TMSS01R0/AJJ Date of Approval: October 10, 2007

TABLE OF CONTENTS

1.0 SCOPE

2.0 CROSS-REFERENCES

3.0 APPLICABLE CODES AND STANDARDS

4.0 MATERIALS AND MANUFACTURE

5.0 BASIC DESIGN REQUIREMENTS

5.1 Pumps5.2 Motors

5.3 Control System

6.0 TESTING

7.0 PRODUCT MARKING

7.1 Nameplate

7.2 Directional Arrow7.3 Instruction Manual

8.0 DATA SCHEDULE

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TRANSMISSION MATERIALS STANDARD SPECIFICATION 83-TMSS-01, Rev. 0

PAGE NO. 3 OF 12 

83TMSS01R0/AJJ Date of Approval: October 10, 2007

1.0 SCOPE

This Material Standard Specification (TMSS) specifies the minimum technical requirements for

design, engineering, manufacturing, testing and performance of Submersible Sump Pumpsintended to be used in the system of Saudi Electricity Company (SEC), Saudi Arabia.

2.0 CROSS-REFERENCES

This Material Standard Specification shall be read in conjunction with the latest revision ofSEC General Specification No. 01-TMSS-01, titled “General Requirement for All

Equipment/Materials”, which shall be considered as an integral part of this TMSS.

This TMSS shall also be read in conjunction with SEC Purchase Order or Contract Schedules

for the project, as applicable.

3.0 APPLICABLE CODES AND STANDARDS

The latest revision/amendments of the following Codes and Standards shall be applicable for

the equipment/material covered in this TMSS. In case of conflict, the vendor/manufacturer may propose equipment/material conforming to one group of Industry Codes and Standards quoted

hereunder without jeopardizing the requirements of this TMSS.

3.1 IEC 60034-1 Rotating Electrical Machines - Part 1, Rating and Performance

3.2 ISO 5198 Centrifugal, Mixed Flow and Axial Pumps - Code for Hydrolic

Performance Test

3.3 NEMA MG1 Motors and Generators

3.4 TES-P119.19 - Building and Yard

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TRANSMISSION MATERIALS STANDARD SPECIFICATION 83-TMSS-01, Rev. 0

PAGE NO. 4 OF 12 

83TMSS01R0/AJJ Date of Approval: October 10, 2007

4.0 MATERIALS AND MANUFACTURE

Table 1: Materials Types of Submirsible Pump Components

Unit System Application

Components Dewatering Drainage Sewage (1 )

Pump/Motor

Housing

Bronze Bronze Bronze

Impeller Bronze, shrouded or open

multi-vane channel

impellers with adjustablediffuser and strainer

Bronze, vortex impellers

in a volute; non-clogging

design.

Bronze, multi-vane,

open or semi-open

shrouded impellers;non-overloading design.

 

Shaft Stainless Steel Stainless Steel Stainless Steel

Fasteners Stainless Steel Stainless Steel Stainless Steel

Mechanical

Shaft Seals

Manufacturer's Standard Manufacturer's Standard Manufacturer's Standard 

 

Strainer Stainless Steel - -

LiftingHandle/Eye

Bolts

Steel, primed or

galvanized

Steel, primed or

galvanized

Steel, primed or

galvanized

 NOTES:

1. For sewage application, submersible pump shall have an effective grinder cutter assembly

with components of chromium alloy and stainless steel.

2. Whenever chemically contaminanted fluid is handled, all materials shall be of stainless steel,

superceding the above table.

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TRANSMISSION MATERIALS STANDARD SPECIFICATION 83-TMSS-01, Rev. 0

PAGE NO. 5 OF 12 

83TMSS01R0/AJJ Date of Approval: October 10, 2007

5.0 BASIC DESIGN REQUIREMENTS

5.1 PUMPS

5.1.1 General

a. The pump section including seals shall be designed for a working pressure of up to 0.80 MPa.

 b. The guaranteed pump performance curve, as quoted, shall becontinuously rising to shut-off. The percentage head rise from rated head

to shut-off shall be as follows:

i. For single operating pumps, a minimum of 10%

ii. For pumps operating in parallel, a minimum of 15%

c. If while handling the specified liquid at the conditions stated on thePump Data Schedule, the pump fails to meet the specified performance

on the site, the Vendor/Bidder shall be responsible for performing any

corrective action required.

d. Design modifications to the pump bowls or internal components whichmay affect the hydraulic or mechanical performance are not permitted

after order placement unless approved by SEC .

e. Pump shall be capable of running dry without damage to any component.

5.1.2 Casing

a. The thickness of all cast bowls shall be suitable for the maximum

discharge pressure plus allowances for head increases at pumping

temperature and hydrostatic test pressure at ambient temperature with a3.2 mm minimum corrosion allowance.

 b. Casings shall have flanged joints. If threaded bowls are used, sealingshall be achieved by means of “O-rings” in the partition grooves.

5.1.3 Rotating Elements

a. Shafts shall be machined and properly finished over their entire length sothat there is no more than 40 micrometers (0.0015 in.) total indicated

runout per meter of shaft length.

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TRANSMISSION MATERIALS STANDARD SPECIFICATION 83-TMSS-01, Rev. 0

PAGE NO. 6 OF 12 

83TMSS01R0/AJJ Date of Approval: October 10, 2007

 b. Underfiling, overfiling or trimming, other than design standard, of

impeller vanes to meet rated performance is not permitted unless

approved in advance by SEC. If approved, the Vendor/Bidder shallsubmit a drawing showing details of the impeller outlet modifications.

This drawing shall also be included in the Operation and Maintenance

(O&M) Manual.

5.1.4 Wear Rings

a. The pump housing bottom and the impeller shall be equipped with easily

replaceable wear rings.

 b. Wear rings shall be held in places by means of a press fit with locking

 pins or threaded dowels (axial or radial) or by flanged and screwed

methods. Tack welding is not acceptable.

5.1.5 Running Clearances

When establishing running clearances between wear rings or between other

rotating and stationary parts, consideration shall be given to pumpingtemperature, suction conditions, the characteristics of the pumped liquid, the

expansion and galling characteristics of the materials and the hydraulicefficiency. Clearances shall be sufficient to ensure dependability of operation

and freedom from seizure under all operating conditions.

5.1.6 Dynamics

Rotating elements shall be dynamically balanced.

5.2 Motors

5.2.1 General

a. The motors shall be totally enclosed and immersible oil-filled lubricatedtype suitable for intermittent or continuous operation.

 b. The motors shall be equipped with built-in automatic-reset thermal

overheating protection.

c. The stator winding insulation for oil-filled motors shall have at least

equivalent to Class F with temperature rise limited to class B insulation.

Three (3) phase motors shall be NEMA B design and NEMA L designfor single (1) phase motors.

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TRANSMISSION MATERIALS STANDARD SPECIFICATION 83-TMSS-01, Rev. 0

PAGE NO. 7 OF 12 

83TMSS01R0/AJJ Date of Approval: October 10, 2007

d. The motors shall be designed to supply its rated outputs at ±5% variationof the rated frequency and voltage. Without overheating the motor,

±10% variation of the rated voltage should be accepted provided the

motor does not run continuously at full load.

e. The motors shall be designed to operate with a voltage imbalance of up

to ±2% between the phases.

f. The motors shall be provided with oil and water resistant power cable of

adequate length as required.

g. The motors shall have a minimum service factor of 1.20.

h. The motor enclosure shall be IP 68 or equivalent.

5.2.2 Rotors

a. Rotors shall be machined and properly finished over their entire length.

The total indicated runout of the bearing journal areas and the area under

the coupling hub shall not exceed 25 micrometers (0.001 in.). All other

areas shall not exceed 50 micrometers (0.002 in.) total indicated runout.

 b. Rotors shall be dynamically balanced.

5.2.3 Bearings

The bearings shall be permanently lubricated by the dielectric oil and shall be

designed for at least 20,000 hours of continuous operation. Bearings shall be

 positioned as follows:

a. Upper Bearing: Shall be a roller or single-row ball bearing designed to

counteract radial forces.

 b. Lower Bearing: Shall be a double angular-contact ball bearing built totake both radial and axial forces.

5.2.4 Shaft Sealing

Submersible motors shall be provided with double mechanical seals operating

independently from each other and seal off the motor from the pump housing.

Lip seals are not permitted as a primary means of sealing.

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TRANSMISSION MATERIALS STANDARD SPECIFICATION 83-TMSS-01, Rev. 0

PAGE NO. 8 OF 12 

83TMSS01R0/AJJ Date of Approval: October 10, 2007

5.2.5 Power Cable

Severe heavy duty rated, oil and water resistant with leak-proof cable gland.

5.3 Control System (for permanently-installed pumps only)

5.3.1 General

a. For interior installation, the control system shall be designed for floatcontrolled pumping consisting of a control panel of NEMA 1 enclosure

having contactor unit with overload relay, a selector switch (Hand-Off-Automatic) and push button for reset of overload relay.

For outdoor installation, control panel shall be constructed of NEMA 4

enclosure and shall be designed for all-weather protection i.e. dust and

water-proof while indoor type control panel shall be dust and splash- proof, constructed of corrosion and abrasion resistant metal.

 b. The control system shall also be designed to provide high water alarm

indication (flashing light and horn), alarm test and silence buttons, pilotlamps and control power on/off switch.

c. The entire control system shall be designed, assembled and tested

meeting UL or IEC regulation or any internationally recognizedstandards.

d. Wiring diagram shall be provided and shall be securely attached on thereverse side of the panel door.

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TRANSMISSION MATERIALS STANDARD SPECIFICATION 83-TMSS-01, Rev. 0

PAGE NO. 9 OF 12 

83TMSS01R0/AJJ Date of Approval: October 10, 2007

6.0 TESTING

6.1 Oil-filled motors shall be tested in compliance with IEC 60034-1 or any other

internationally recognized standards.

6.2 Each motor shall be given a routine test to demonstrate that it is free from mechanical

and electrical defects. This test shall include the following:

6.2.1 A high potential test on the stator.

6.2.2 An insulation resistance test.

6.2.3 Measurement of the winding resistance.

6.2.4 Measurement of the no-load current (each phase).

6.2.5 Measurement of nominal no-load speed.

6.2.6 A determination of the locked rotor current.

6.3 Curves showing motor efficiency and power factor at 100%, 75% and 50% of full loadshall be provided. The Vendor shall indicate which test code method will be used in the

determination of this performance data.

6.4 A polarization index text test shall be conducted. The polarization index shall not beless than 3.0.

6.5 Pump bowl assemblies shall be hydrostatically tested, using water at ambienttemperature, to a pressure of 1.5 times the maximum allowable assembly pressure.

6.6 All pumps performance tests shall be in accordance with ISO 5198, Class C; smallerunits being subjected to Annex B criteria.

6.7 Tests measurements shall be taken at shut-off to determine impeller size, minimumcontinuous stable capacity, mid-way between minimum continuous stable capacity andrated capacity, rated capacity and 120% of rated capacity.

6.8 On completion of performance testing, the pumpset shall be set at its rated point and run

for a continuous period of not less than one hour. Test measurements shall be taken atfifteen (15) minutes intervals during this period.

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TRANSMISSION MATERIALS STANDARD SPECIFICATION 83-TMSS-01, Rev. 0

PAGE NO. 10 OF 12 

83TMSS01R0/AJJ Date of Approval: October 10, 2007

7.0 PRODUCT MARKING

7.1 Nameplates

Pumps and motors manufactured in accordance with this standard shall be identified

(either in English or Arabic) by a nameplate, made of corrosion-resistant metal

indicating the following information:

7.1.1 Pump Make/Model No.

7.1.2 Pump Type and Serial Number7.1.3 Impeller Size, mm.

7.1.4 Motor Make/Model No.7.1.5 Motor Rating: Watts or kW7.1.6 Service Factor

7.1.7 Rated Power Supply: Voltage/Phase/Hz.

7.1.8 Full Load Amperage, Amps.

7.1.9 Class of Insulation7.1.10 Design NEMA B (3-Phase), L (1-Phase)

7.1.11 Power Factor/Efficiency

7.1.12 Rated Speed: RPM

7.1.13 Unit Weight (excluding power cable), kgs.7.1.14 Country of Origin

7.1.15 Inspection Code/Date7.1.16 83-TMSS-01 Rev.

7.2 Directional Arrow

A directional arrow shall be marked on each pump housing to indicate pump rotation.

7.3 Instruction Manual

A fully illustrated Instruction Manual in English and Arabic shall be delivered with each

submersible sump pumps and motors, including the following information:

7.3.1 The information mentioned in item 7.1 above.

7.3.2 A simplified description of the method of installation and O & M procedures.

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TRANSMISSION MATERIALS STANDARD SPECIFICATION 83-TMSS-01, Rev. 0

PAGE NO. 11 OF 12 

83TMSS01R0/AJJ Date of Approval: October 10, 2007

8.0 DATA SCHEDULE

SUBMERSIBLE SUMP PUMPS

SEC Enquiry No. Date:

SEC Purchase Order No. Date:

or Contract No.

SEC PTS No./Project Title with J.O. No.

REFERENCESECTION NO. DESCRIPTION 'A' 'B' 'C'

3.0 APPLICABLE CODES AND

STANDARDS* 

5.0 DESIGN REQUIREMENTS

Application

Pump Type __________ __________ __________

Rated Capacity, (lps) __________ __________ __________Total Dynamic Head, (m) __________ __________ __________

Pump Efficiency, % __________ __________ __________Motor Type __________ __________

Motor Starting Current (A) * __________ __________

Motor Rating, (kW) __________ __________ __________Rated Power Supply,(V/Ph/Hz.) __________ __________ __________

Rated Speed, (rpm) __________ __________ __________Class of Insulation F  __________ __________

Operation __________ __________ __________

Pumped Liquid __________ __________ __________

Specific Gravity __________ __________ __________Liquid Temperature, (°C)  __________ __________ __________

Pump Discharge Size, (mm.) __________ __________ __________

Type of enclosure for control panel * __________ __________

6.0 TESTING

Compliance with Standard __________ __________ __________

'A'- SEC SPECIFIED DATA/PARAMETER.

'B'- BIDDER/SUPPLIER/VENDOR/CONTRACTOR PROPOSED DATA/PARAMETERS.

'C'- REMARKS SUPPORTING THE PROPOSED DEVIATION IN COLUMN 'B'.

(*)- DATA/PARAMETER TO BE PROVIDED/PROPOSED BY THE BIDDER/SUPPLIER/

  VENDOR/CONTRACTOR IN COLUMN 'B'.

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TRANSMISSION MATERIALS STANDARD SPECIFICATION 83-TMSS-01, Rev. 0

PAGE NO. 12 OF 12 

83TMSS01R0/AJJ Date of Approval: October 10, 2007

8.0 DATA SCHEDULE

SUBMERSIBLE SUMP PUMPS

ADDITIONAL TECHNICAL INFORMATION OR FEATURES TO BE FURNISHED BY

SEC:

A.

ADDITIONAL SUPPLEMENTARY DATA OR FEATURES PROPOSED BY

BIDDER/VENDOR/SUPPLIER/CONTRACTOR:

B.

OTHER PARTICULARS TO BE FILLED UP BY BIDDER/VENDOR/SUPPLIER/CONTRACTOR:

C.

Actual Manufacturer

of Equipment/Material

Vendor/Supplier/

Contractor

 Name of the Company

Location and address

 Name and Signature of

authorizedRepresentative

and date

Official Seal/Stamp

of the Company & Date