twice three times four The colored identification band shall be visible from the floor level. True False The marking on nonpotable water systems needs to include the following words ______. CONTAMINATED – DO NOT DRINK CONTAMINATED WATER – DO NOT TOUCH DANGER – CONTAMINATED WATER CAUTION: NONPOTABLE WATER, DO NOT DRINK It is unlawful for a potable water supply piping system to be installed that could allow used or polluted water to enter the system from any receptor or fixture by reason of backsiphonage. True False It is unlawful for a potable water supply piping system to be installed that could allow used or polluted water to enter the system from any receptor when the receptor is subject to pressure in excess of operating pressure to hot or cold water piping. True False It is unlawful to make a connection between pipes in a potable water system and chemical piping unless there is a backflow prevention device. True Each connection between potable water and chemical piping shall have a separate backflow prevention device. True False A private water supply system can be connected to another source of supply ______. when the AHJ gives approval when the other source of supply is a private system when the other source of supply is a public system never is allowed Such equipment or mechanism ______ permitted where equipment with an approved backflow prevention device or assembly. may be shall not be can A homemade backflow prevention device may be installed ______. after it has been approved by the AHJ before is has been approved by the AJH never – homemade devices are never allowed if it has been constructed UL approved components ______ shall be tested in accordance with standards acceptable to the AHJ. A. A device B. An assembly C. Both A and B D. none of the answers provided The person responsible for maintaining a backflow device is ______. a plumber a field technician the person having control of the device none of the answers provided No device or assembly shall be removed from use or relocated or other device or assembly substituted, without the approval of the Authority Having Jurisdiction. True False Testing of a backflow device shall be performed by ______. a Washington State Department of Health backflow assembly tester a field technician a plumber a facilities engineer
3 feet 4 feet 5 feet 6 feet The water supply to a dialysis water system shall be protected from backpressure and backsiphonage by a reduced-pressure principle backflow preventer. True False On the job, an installer ran short of copper pipe to finish the job. Can they use plastic pipes to finish the job? Yes No Type ______ is the minimum weight piping that can be used in a building. K L M N Type ______ copper piping is labeled with a green color. K L M N Type ______ copper piping is labeled with a red color. K L M N Type ______ copper piping is labeled with a blue color. K L M N Listed flexible copper water connectors may be installed inside of a wall. True False If a malleable iron water fitting of less than 2 inches is used in a water supply, it must be galvanized. True because all sizes of malleable fittings must be galvanized. False because malleable fittings are not required to be galvanized. False because only cast iron fittings are to be used and they are not malleable. False because only copper is to be used for systems of less than 2 inches. Used potable water piping from an apartment building’s water system was salvaged. Can the pipe be used for a water system on another project? Yes No Quiz 4 If the metal piping being replaced was used for electrical grounding, the adequate ground provisions must be made ______. adjacent to the piping above ground on each end of the piping both of the answers provided none of the answers provided The tracer wire must ______. be a single strand wire be not less than 16 AWG have a crimp terminal on each end all of the answers provided none of the answers provided The maximum length for a flexible corrugated connector for fixture connectors is ______. 18 inches 30 inches 36 inches 48 inches 56 inches The maximum length for a flexible corrugated connector for a washing machine is ______. 36 inches 48 inches 60 inches 72 inches 96 inches The maximum length for a flexible corrugated connector for a dishwasher and icemaker is ______. 120 inches 96 inches 72 inches 60 inches 48 inches