Understanding Heat Exchanger Reading 03- Part 2 of 2 The ARAMCO Std.
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Document Responsibility: <strong>Heat</strong> Transfer Equipment Standards Committee<br />
32-SAMSS-007<br />
Draft Date: 1 December 2013<br />
Next Planned Update: 1 December 2018<br />
Manufacture <strong>of</strong> Shell and Tube <strong>Heat</strong> <strong>Exchanger</strong>s<br />
7.1.6 <strong>The</strong> MDMT shall be used to determine the requirements for impact<br />
testing in accordance with the Code and this specification.<br />
7.2 Cladding for Corrosion Allowance<br />
<strong>Exchanger</strong>s having partial or complete cladding shall conform to 32-<br />
SAMSS-<strong>03</strong>1 in addition to the requirements <strong>of</strong> this specification.<br />
7.3 Shell Supports<br />
7.3.2 (Addition)<br />
(f) <strong>The</strong> exchanger shall be fixed at one saddle support and free to slide<br />
at the other saddle.<br />
7.3.6 <strong>The</strong> shell shall be analyzed in accordance with the “L. P. Zick” method.<br />
Saddle supports and the exchanger shell shall be analyzed for operating<br />
and hydrotest loads including any piping, wind or other external loads.<br />
7.3.7 <strong>The</strong> allowable concrete bearing stress to be used for the design <strong>of</strong><br />
baseplates shall be 1<strong>03</strong>40 kPa (1400 psi).<br />
7.3.8 <strong>The</strong> outline drawing for horizontal exchangers shall specify locations <strong>of</strong><br />
the fixed and sliding saddles and dimension from exchanger centerline to<br />
underside <strong>of</strong> saddle baseplate.<br />
7.3.9 Anchor Bolts<br />
7.3.9.1 <strong>The</strong> <strong>Exchanger</strong> Manufacturer shall determine the size and number <strong>of</strong><br />
anchor bolts required.<br />
7.3.9.2 Anchor bolts shall be in compliance with Standard Drawing AA-<strong>03</strong>6322<br />
Sht. 001 (Rev. 07 or later).<br />
7.3.9.3 Anchor bolts shall not be less than 19 mm minimum nominal diameter.<br />
7.3.9.4 <strong>The</strong> design <strong>of</strong> anchor bolts shall be in accordance with the requirements<br />
<strong>of</strong> Appendix D <strong>of</strong> ACI 318.<br />
7.3.9.5 Anchor bolts that are exposed to the weather in coastal areas, subjected<br />
to frequent wash downs, or subjected to firewater deluge testing shall<br />
have their diameters increased by 3 mm as a corrosion allowance.<br />
7.3.9.6 <strong>Exchanger</strong>s supported on saddles shall be provided with an even number<br />
<strong>of</strong> anchor bolts with a minimum <strong>of</strong> two anchor bolts per saddle.<br />
7.5 Floating Head<br />
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