WW-H-191E
4.4.2 Sampling for tests. Guidance for inspection level and an AQL is provided in 6.4.2.
4.5 Examination. Each heater selected shall be examined for compliance with the requirements specified in section 3 of this document. Any redesign or modification of the contractor's standard product to comply with specified requirements, or any necessary redesign or modification following failure to meet specified requirements shall receive particular attention for adequacy and suitability. This element of inspection shall encompass all visual examinations and dimensional measurements. Noncompliance with any specified requirements or presence of one or more defects preventing or lessening maximum efficiency shall constitute cause for rejection.
4.6 Tests.
4.6.1 Hydrostatic test. The hydrostatic test shall be conducted in accordance with ASME
standards. Failure of any heater to pass the test shall be cause for rejection.
4.6.2 Performance test. The first article sample shall be tested to verify compliance with the requirements of 3.7 and 3.9. The heater shall be mounted in the test piping with necessary controls and safety devices. When a continuous flow of water at the rated capacity is discharged from the heater outlet, saturated steam shall be gradually admitted to the heater shell until the steam pressure specified for the heater selected is obtained. Outlet water temperature shall be recorded after stabilization of water temperature is achieved. Failure of the heater to meet the required flow and outlet temperature specified shall be cause for rejection.
5. PACKAGING
5.1 Packaging requirements. The preservation, packing, and marking shall be as specified in the contractor or order.
6. NOTES
(This section contains information of a general explanatory nature that may be helpful, but is not mandatory.)
6.1 Intended use. The heaters covered by this specification are intended for hot water heating systems, as supplements to storage tanks or as converters for steam-hot water systems.
6.2 Acquisition requirements. Acquisition documents should specify the following:
a. Title, number, and date of this document.
b. Type and class of heater required (see 1.2.1). c. Style of rear end head required (see 1.2.2).
d. When first article inspection is required (see 3.3, 4.2.1, and 6.3).
e. Heater capacity (GPM (Lis)), inlet water temperature ( F ( C)), outlet water temperature
( F ( C)), and steam supply pressure (psig (kPa (gage)) as required (see 3.7).
8
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business