entitled "Abrasive Sample Collection and Shipping Kit." For purposes of
quality conformance inspection, a lot shall consist of all abrasive
materials of the same type from a single, uniform batch produced and
offered for delivery at one time. Obtain samples of each abrasive lot
using the sampling techniques and schedule of MIL-A-22262. The addition of
any substance to a batch shall constitute a new lot. Identify samples by
designated name, specification number, lot number, project contract number,
sample date, intended use, and quantity involved. The Contracting Officer
will take possession of the packaged samples, contact the shipping company
to arrange for pickup, and relinquish the samples only to the shipping
representative for shipment to the approved laboratory for testing as
required by the Article entitled "Abrasive Sample Testing."
[3.2.3
Coating Sample Test Reports
**************************************************************************
NOTE: Delete this Article and modify SUBMITTALS in
Part 1 when NSF 61 coating system is chosen.
**************************************************************************
Test samples of all primer, intermediate, and topcoat materials for
compliance with requirements of Table I. Reject entire batch represented
by samples that fail one or more tests, reselect, and retest samples.
]3.2.4
Abrasive Sample Test Reports
Test samples of abrasive materials for compliance with the appropriate
abrasive specification. Reject entire lot represented by samples that fail
one or more tests, reselect, and retest samples.
[3.3
SLUDGE REMOVAL AND TANK CLEANING
Remove sludge and clean storage tanks in accordance with ________.
]3.4
LIGHTING
Provide lighting for all work areas as prescribed in SSPC Guide 12.
3.5
ENVIRONMENTAL CONDITIONS
3.5.1
Control System Requirements
Provide and utilize dehumidification and ventilation equipment to control
humidity, temperature, and vapor levels in tank from beginning of abrasive
blasting through coating application and for four days after the last
coating is applied. System shall maintain vapor concentrations at or below
10 percent of Lower Explosive Limit (LEL). System may incorporate any
combination of solid desiccant and direct expansion refrigeration
equipment. No liquid, granular, calcium chloride, or lithium chloride
drying systems will be accepted. Use only electric, indirect fired
combustion, indirect friction, or steam coil auxiliary heaters. System
shall be compatible with removal of dust and solvent vapors, and shall have
fail-safe measures to ensure reliability during operations.
3.5.1.1
Humidity Control for Surface Preparation and Primer Application
Provide and utilize dehumidification equipment to maintain relative
humidity at appropriate level to prevent prepared steel surfaces from
corroding at all times during abrasive blasting through primer application.
SECTION 09972
Page 20
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