MIL-DTL-17557 Coolers, Fluid, Industrial, Naval Shipboard \(Sample Water Coolers\)This specification covers sample water coolers for Naval shipboard boiler water and feedwater sampling. Only one classification of cooler is covered by this specification.

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MIL-DTL-17557F(SH)

First article inspection (see 4.3).

Conformance inspection (see 4.4).

4.2 Inspection conditions. Unless otherwise specified, all inspections shall be performed in accordance with

the test conditions specified herein.

4.3 First article inspection. First article inspection shall be performed when a first article sample is required

(see 3.1). This inspection shall include the tests of 4.3.2 and 4.3.3.

4.3.1 Laboratory selection. The first article tests shall be conducted at a laboratory acceptable to the acquisition

activity.

4.3.2 Performance test. This test shall include accurate measurements of coolant and cooled medium flows,

pressure drops, and heat transfer. The cooler shall meet the requirements as specified in 3.4.7 (see 6.2).

4.3.3 Shock test. The first article sample shall be shock tested in accordance with Grade A of MIL-S-901

4.4 Conformance inspection. Conformance inspection shall consist of the test of 4.4.1.

4.4.1 Hydrostatic test. A hydrostatic test shall be performed to ensure conformance to 3.4.8 (see 6.2).

5. PACKAGING

5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or

order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor personnel, these

personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging

requirements are maintained by the Inventory Control Point s packaging activities within the Military Service or

Defense Agency, or within the military service s system commands. Packaging data retrieval is available from the

managing Military Department s or Defense Agency s automated packaging files, CD-ROM products, or by

contacting the responsible packaging activity.

6. NOTES

(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)

6.1 Intended use. The sample water coolers specified herein are normally used for cooling water samples as

drawn from shipboard boilers or feedwater systems for chemical testing.

6.2 Acquisition requirements. Acquisition documents should specify the following:

Title, number, and date of this specification.

When first article is required (see 3.1).

Whether the normally allowed space envelope may be exceeded (see 3.4.1).

Whether NPS external connections differ from those specified (see 3.4.5).

Sample water operating pressure, temperature, and flow rate, if other than as specified (see 3.4.7).

f. Whether seawater or chilled fresh water should be used as coolant, and if seawater, alternative parameters

to be met (see 3.4.7 and 4.3.2).

Temperature and permissible upper limit of flow rate of the coolant (see 3.4.7 and 4.3.2).

Coil hydrostatic test pressure, if other than as specified (see 3.4.8 and 4.4.1).

Shell side hydrostatic test pressures, if seawater cooled and if other than as specified (see table I, 3.4.8, and

Packaging requirements (see 5.1).