RANIA HOSPITAL November 2011
IRAQ
SECTION 15175 - TANKS
PART 1 – GENERAL
1.1 SUMMARY
A. Provide labor, materials, equipment and services, and perform operations required for
complete installation of Plumbing Equipment and related work as indicated on the drawings
and specified herein.
B. Work Included The work shall include, but not be limited to, the following:
1. Water tank.
2. Expansion Tanks.
3. Chemical Feed pot.
4. Potable water tank.
C. Related Work Specified Elsewhere
1. Basic Mechanical Requirements - Section 15010.
2. Basic Mechanical Materials and Methods - Section 15050.
1.2 QUALITY ASSURANCE
A. Materials and work shall conform to the latest edition of industry standards, reference
specifications listed below and specified herein and to applicable codes and requirements of
local authorities having jurisdiction, whichever is more stringent.
B. Qualifications
1. The Contractor shall provide the equipment specified, or equipment of the same standard
of construction and performance as produced by one of the listed manufacturers.
2. Approval of the manufacturer does not necessarily constitute approval of its products as
equal to those specified. Immediately after the awarding of the contract and prior to the
start of construction, submit to the Engineer for approval a complete written summary of
the proposed manufacturer’s equipment.
C. Test
1. Factory Tests
a. Before shipment, the manufacturer shall test components hydrostatically at 150% of
rated design pressure for ability to withstand maximum design pressure and for
tightness.
b. Conduct factory performance test on actual pumps to be furnished. Furnish sufficient
lead notice to Engineer to permit witnessing of test. Furnish certificate of test.
1.3 SUBMITTALS
Submit the following in accordance with Section 1 5010.
1. Product Data
c. Submit copies of manufacturer’s latest published literature for materials specified herein
for approval; obtain approval before ordering materials.
d. Data shall include manufacturer’s technical product data, including installation
instructions, and dimensioned drawings for each type of manufactured piping specialty.
Include pressure drop curve or chart for each type and size of pipeline strainer. Submit
schedule showing manufacturer’s figure number, size, location, and features for each
required piping specialty.
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2. Shop Drawings Submit shop drawings for work specified herein for approval.
a. A complete detailed set of construction and erection drawings for equipment including
vibration isolators and bases indicating dimensions, materials of construction and
methods of assembly.
b. Complete capacity and performance data including items indicated in the equipment
schedules and specifications.
Maintenance Data Submit maintenance data and spare parts lists for each type of manufactured
piping specialty. Include this data, product data, and shop drawings in maintenance manual in
accordance with requirements of Section 15010.
1.4 DELIVERY, STORAGE AND HANDLING
A. Deliver materials and handle so as to prevent the inclusion of foreign materials and the
damage of materials.
B. Store materials and equipment where designated and assume responsibility and security
for materials and equipment. Take precautions for protection from detrimental conditions.
PART 2 - PRODUCTS
2.1 TANKS MATERIALS/EQUIPMENT
A. Stainless Steel Water Tank
1. Tank shall be constructed of 3 mm thick welded stainless steel 316 L sheet metal to the
capacities indicated on the drawings.
2. Tank shall be tested for leaks before installation.
3. Tank shall be mounted on a steel support and shall be equipped with the following:
a. Access cover.
b. Level indicator.
c. Fill, vent and overflow pipe.
d. Drain valve.
e. Supply line with valve.
f. Tank will be local made.
B. Chemical Feeder Pot
1. The unit shall be of a quality construction with dished ends for safe operation at pressure
and shall be supplied complete with all valves and funnels all factory assembled. The
feeder unit shall be supplied with a stand and shall be pressure tested with a certificate
from the factory.
2. Chemical feeder pot shall be similar to Houseman dosage pots or approved equal.
C. Expansion tank
1. Provide compression tank (expansion tank) as shown on the drawings, constructed for
930 Kpa working pressure, stamped with “ U” symbol and supplied with National Board
From U-i denoting compliance with ASME boiler and pressure vessel code. Provide
fittings and connections to related equipment in accordance with tanks manufacturer’s
recommendations. Tank shall be insulated externally. Insulation shall be same type used
for exposed ductwork, specified hereinbefore. Tank diaphragm shall withstand 10 deg. C
up to 120 deg C suitable for heating and chilled water systems.
2. Refer to drawings for tank support.
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D. Concrete water tanks
1. Supply and install in each compartment of the basement reservoir the followings:
a. Balancing piston type float valve with shut-off valve.
b. Level float switches assemblies as required and as necessary for the control of the
relevant systems.
c. Water level alarm float switches connected to central alarm panel, located in the
maintenance block.
d. Drain valve.
e. Drain and overflow to nearest drain provision or as shown on the drawings and vent
pipes with insect copper mesh screen.
f. All pipes into the water tank shall be located in place before concreting and shall be
provided with no-leak flanges welded to the pipe.
g. Stainless steel ladders and access doors as shown on drawings.
h. Water tanks shall be monitored by BMS with all necessary controls.
i. Contractor shall supply all material and labour to treat concrete water tanks with
internal lining, non toxic, solvent free epoxy paint, two epoxy resin system with
water proofing capabilities minimum thickness 200 micron. Material used shall be
suitable for potable water and accordingly . will not contaminate water.
PART 3 - GENERAL
3.1 EXAMINATION
Examine conditions at the job site where work of this section is to be performed to insure
proper arrangement and fit of the work. Start of work implies acceptance of job site
conditions.
3.2 PREPARATION
A. Examine the Contract Drawings and specifications in order to insure the completeness of the
work required under this Section.
B. Verify measurements and dimensions at the job site and cooperate in the coordination and
scheduling of the work of this Section with the work of related trades, so as not to delay job
progress.
3.3 INSTALLATION
A. Construct apparatus of materials and pressure ratings suitable for the conditions encountered
during continuous operation.
B. Where corrosion can occur, appropriate corrosion-resistant materials and assembly methods
use including isolation of dissimilar metals against galvanic interaction.
C. Where components are or may come in contact, although the materials may basically be
similar, use hardness differentials of at least 50 Brinell to prevent seizure and reduce wear.
D. Grout base plates completely to provide a rigid non-deflecting support.
E. Provide OSHA approved sheet metal guards over couplings.
F. Pipe vents, bleeds, gland and base drains, and blowoff connections to nearest floor drain using
copper tubing.
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G. Provide nameplates; attach to unit showing the following information:
1. Maker’s name, date of manufacture, size and type.
2. Rated capacity, design and operating pressure ratings.
3. Rated horsepower, full load amperes.
4. Voltage, number of phases, frequency.
5. Temperature rise or class of insulation.
6. other information, as applicable, as noted herein or directed by Engineer.
H. Provide direction arrow indicating direction of rotation of pump, where pumps are included in
assembly.
3.4 FELD QUALITY CONTROL
A. Field Tests
1. Perform field test to demonstrate the ability of the equipment to meet contract
requirements.
2. Should any part of the apparatus or system fail to meet the contract requirements, adjust,
repair or replace any defective or inoperative parts and, on completion, again conduct the
complete performance tests.
3. Refer to appropriate sections for additional required test data.
B. Include results of factory and field tests in the Instruction Manual as described in the
appropriate sections.
END OF SECTION 15175
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