Intro to TBE for Pump

INTRODUCTION TO TECHNICAL BID EVALUATION PREPARED BY: Muhammad Ridhwan Abdul Rasid, Mechanical Trainee

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Date: March 5 2010

1. WHAT IS TECHNICAL BID EVALUATION (TBE) After the specifications of packages have been issued, the specs will be sent to the vendors. Then, the vendors will provide proposal in order to be rewarded those packages. The engineering team will collect all the proposal data and examining them which comply technically with the specifications. This process called technical bid evaluation. Afterward, commercial bid evaluation will compare the price of the packages proposed by the vendors. 2. PURPOSE OF TBE i. ii.

To list down the main scope of supply, extent of specification compliance, major deviations in order to get a general idea of the completeness of the pump technical proposals. The TBE will list the important points of each vendor quote that includes: a. b. c. d.

Pumps model number and size Compliance with process duty requirements Mechanical design limitations (pressure and temperature) Mechanical and hydraulic operation parameters (such as absorbed power , head rise to shutoff, capacity rise to run out, percentage of best efficiency point) e. Mechanical design features (such as material of construction, seal type, seal flush type, bearing and lubrication type) iii. iv. v. vi. vii.

viii. 3.

To provide pump information to determine which of the quotes will be fully evaluated. To compare the quotes against the specified requirements. Apple to apple comparison between alternative bids. To ensure that the pumps is provided in compliance with the requisition. All items in the pump TBE that do not meet requisition requirements or that are not clearly defined in the vendors quote should be highlighted in technical clarification questionnaire/meeting. To accept / reject all exception and deviations.

TECHNICAL EVALUATION METHODOLOGY Revie

Revie

id

& a reed on deviation list

Issue technical clarification

Complete Technical Bid Ta ulation

Conclusion technical acceptance / TBE Report 4. TECHNICAL EVALUATION CRITERIA i.

To select a proper pump for a particular application it is necessary to utilize the system curve and the pump performance curve

ii. iii. iv. v. vi. vii. viii. ix.

NPSHA > NPSHR to allow pump operation without cavitations. Margin between pump NPSHR and specified NPSHA shall be 1.0m over the allowable operating range Pumps shall be selected to have stable Vs capacity curves with continuous rise to shut-off. The head rise from rated capacity to shut-off shall be between 10% and 20%. Pumps shall have a preferred operating region of 70 % to 120 % of best efficiency flow rate of the pump as furnished. Rated flow shall be within the region of 80 % to 110 % of best efficiency flow rate of the pump as furnished. Pump shut off head shall be smaller than piping design pressure. Motor power shall be selected at end of curve kW. Motors, electrical components and electrical installations shall be suitable for the area classification (class, group, and division or zone). Upon completion of the technical evaluation, all the bidders were categorized under any one of the following technical parity bands (TPB): y

GREEN

y

YELLOW

y

x.

Technically Acceptable Technically Acceptable with Areas of Minor Concern RED Technically Not Acceptable

The technical evaluation criteria were divided into the two (2) categories: a. General Vendors Experience List Delivery Period / ncoterm y y

y y y y

Design Life Guarantee / Warranty Spare Part List Deviation List

b. Technical Compliance to Standard Requirements (AP610, ABS, etc) Package Limit Operating Condition Pump Performance Weight Utilities Material of Construction Inspection & Test Plan y y y y y y y y

5. TBE FLOW/ PROCEDURES BE riteri

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ic l l ri ic tio Questio

Issue

Report

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