22 11 23-01-001 Patterson Split Case - Garney Construction
22 11 23-01-001 Patterson Split Case - Garney Construction
22 11 23-01-001 Patterson Split Case - Garney Construction
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12. All the three pumps WPS-P1,-P2,-P3 are identical units and will have the<br />
same impeller trim.<br />
13. Impeller will be finished smooth all over and is designed of ample strength<br />
and stiffness for maintaining the maximum capacity of the unit.<br />
14. Impeller will be statically and dynamically balanced before to be assembled.<br />
15. Pump bearings are designed to carry the axial and radial thrust loads without<br />
the addition of external cooling. Bearing L10 life will exceed 100,000hrs at<br />
the rated head and flow.<br />
16. Pump base will be stress relieved before machining.<br />
17. Interior of casing will be smooth and free of surface defects.<br />
18. CLARIFICATION SECTION <strong>22</strong> <strong>11</strong> <strong>23</strong>.<strong>01</strong> /2.<strong>01</strong>D- <strong>Case</strong> rings are clamped<br />
between upper and lower case and are secured with anti- rotation stainless<br />
steel dowel pins.<br />
19. CLARIFICATION SECTION <strong>22</strong> <strong>11</strong> <strong>23</strong>.<strong>01</strong> /2.<strong>01</strong>F- Pressure regulating valves<br />
and gauges are not needed for pumps with a self-flush system and packing.<br />
Pumps will be equipped with <strong>Patterson</strong> standard system for split case<br />
pumps. The piping will be insulated to operate in freezing conditions.<br />
20. CLARIFICATION SECTION <strong>22</strong> <strong>11</strong> <strong>23</strong>.<strong>01</strong> /2.<strong>01</strong>J-Pump and motor will be<br />
mounted on accurately machined pads. <strong>Patterson</strong> standard stainless steel<br />
shims will be provided for motor alignment.<br />
21. CLARIFICATION SECTION <strong>22</strong> <strong>11</strong> <strong>23</strong>.<strong>01</strong>/1.07.A.7 – As shown in the pump<br />
curves included in the proposal, the pump shall overshoot Point 2. Based on<br />
the system curves included in the contract documents the expected<br />
operating condition of one pump against the Existing Luminant Line is 9,750<br />
GPM at 130 ft. Pump has the capacity to operate at 100 ft. of head providing<br />
<strong>11</strong>500 GPM. But this will require NPSHA (available) to exceed 27.4 FT.<br />
NOTE:<br />
The 100FT/<strong>11</strong>500GPM operating point is located outside pump<br />
allowable operating range.<br />
<strong>22</strong>. CLARIFICATION SECTION <strong>22</strong> <strong>11</strong> <strong>23</strong>.<strong>01</strong>/1.03.3C – Leveling shims for base<br />
to be provided by Contractor.<br />
<strong>23</strong>. CLARIFICATION SECTION <strong>22</strong> <strong>11</strong> <strong>23</strong>.<strong>01</strong>/3.<strong>01</strong>K – Pump top coat paint will<br />
have a custom blue color to match paint chips provided by customer.<br />
24. CLARIFICATION SECTION <strong>22</strong> <strong>11</strong> <strong>23</strong>.<strong>01</strong>/1.<strong>01</strong>B and 2.<strong>01</strong>F – Pump thermal<br />
freeze protection system to be done by Contractor.
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