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 Test #1:
Pier 4 NAVSTA Gravity Line
Salt Water to Sewer
Horizontal Layout
Pressure on Supply Line, 80 psi
(1) Full open pier riser, active pulsation; hose not completely
full, pressure gauge at pier riser O psi.
(2) Closed pier riser valve 50 percent; hose became completely
full, no pulsation, gauge at pier riser 5 psi.
Pier 5 NAVSTA Pressure Manifold
Test #2:
Salt Water to Sewer
Horizontal Layout
Pressure on Supply Line, 90 psi
(1) Full open pier riser, no pulsation; hose completely full,
pressure gauge at pier riser 30 psi.
(2) Full open pier riser; reduced salt water flow to give pier
riser gauge 5 psi, no pulsation.
(3) Full open pier riser; reduced salt water flow to give pier
riser gauge O psi. Very slow throb pulsation in hose next to pier riser
connection; hose was not full bore.
(4) Cut salt water flow again and pulsation stopped; hose was not
full bore.
Pier 5 NAVSTA Pressure Manifold
Test #3:
Salt Water Line Aboard AS-15
Approximately 35 feet above pier
Pressure Supply Line, 50 psi
(1) Full open pier riser, active pulsation; hose not completely
full, pressure gauge at pier riser, O psi.
(2) Closed pier riser 50 percent; hose became full approximately
90 percent of the hose up to the ship connection. The pulsations stopped;
gauge at pier riser, 9 psi.
B.14 Because of the dearth of ships in San Diego that have been certified to
operate their CHT systems, simulated exercises were carried out to identify
problems that might-be encountered in connecting ships' deck risers to pier
sewer risers using the 4-inch transfer hoses. The test results are as
follows :
Two hoses; ship crew, three men; shore crew, two men; no
a. FFG-1:
problems.
b. LPD-7: One hose; ship crew, three men; shore crew, two men; hose
lifted 30 feet above pier; no problems.
B-4
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