Sounding pipe

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16 years 6 months ago - 16 years 6 months ago #7191 by srinivas.vinjamuri
Sounding pipe was created by srinivas.vinjamuri
Hi all,
I need a clarification regading sounding pipe,

Can we give elbows in sounding pipe routing?

Thank you,

Srinivas Vinjamuri

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16 years 6 months ago - 16 years 6 months ago #4234 by Jop
Replied by Jop on topic Is this what you are
Is this what you are talking about?

Sounding pipe (′sau̇nd·iŋ ′pīp)

(naval architecture) A pipe through which the depth of liquid in a water or oil tank on board a ship can be measured or sounded.

If so, then I would think that you could not have any elbows.

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16 years 6 months ago - 16 years 6 months ago #4235 by srinivas.vinjamuri
Replied by srinivas.vinjamuri on topic thnaq
Thanks alot jop

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16 years 6 months ago - 16 years 6 months ago #4239 by gpsvn
Replied by gpsvn on topic In rare cases, a pair
In rare cases, a pair of 45 degree elbows can be used. I did have to prove that sounding can be done with such pipe before the operation guy could accept it. It was for self installation platform, so the sounding tubes are required only for one single trip from the yard to its installation site.

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16 years 6 months ago - 16 years 6 months ago #4245 by sabir
Replied by sabir on topic Dear Mr. Jop, Could u pls
Dear Mr. Jop,

Could u pls explain in detail what is sounding pipe OR any reference material regarding the same.

Thank you

Sabir

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16 years 6 months ago - 16 years 6 months ago #4246 by Jop
Replied by Jop on topic Code of Federal Regulations] From the
Code of Federal Regulations]
[Title 46, Volume 2]
[Revised as of October 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE]


TITLE 46--SHIPPING

CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)

PART 56_PIPING SYSTEMS AND APPURTENANCES--Table of Contents

Subpart 56.50_Design Requirements Pertaining to Specific Systems

Sec. 56.50-90 Sounding devices.

(a) Each tank must be provided with a suitable means of determining
liquid level. Except for a main cargo tank on a tank vessel, each
integral hull tank and compartment, unless at all times accessible while
the vessel is operating, must be fitted with a sounding pipe.
(b) Where sounding pipes terminate below the freeboard deck on cargo
vessels, they shall be fitted with gate valves. On passenger vessels,
where sounding pipes terminate below the bulkhead deck, they shall be
fitted with self-closing gate valves.
(c) Except as allowed by this paragraph, on each vessel constructed
on or after June 9, 1995, no sounding pipe used in a fuel-oil tank may
terminate in any space where the risk of ignition of spillage from the
pipe might arise. None may terminate in a space for passengers or crew.
When practicable, none may terminate in a machinery space. When the
Commanding Officer, Marine Safety Center, determines it impracticable to
avoid terminating a pipe in a machinery space, a sounding pipe may
terminate in a machinery space if all the following requirements are
met:
(1) In addition to the sounding pipe, the fuel-oil tank has an oil-
level gauge complying with paragraph (d) of this section.
(2) The pipe terminates in a place remote from ignition hazards
unless precautions are taken such as fitting an effective screen
(shield) to prevent the fuel oil, in case of spillage through the end of
the pipe, from coming into contact with a source of ignition.
(3) The end of the pipe is fitted with a self-closing blanking
device and a small-diameter, self-closing control cock located below the
blanking device for the purpose of ascertaining before the blanking device is opened that no fuel oil is present. Provision must be made to ensure that no spillage of fuel oil through the control cock involves an ignition
hazard.
(d) On each vessel constructed on or after June 9, 1995, other oil-
level gauges may be used instead of sounding pipes if all the following
requirements are met:
(1) In a passenger vessel, no such gauge may require penetration
below the top of the tank, and neither the failure of a gauge nor an
overfilling of the tank may permit release of fuel into the space.
(2) In a cargo vessel, neither the failure of such a gauge nor an
overfilling of the tank may permit release of fuel into the space. The
use of cylindrical gauge-glasses is prohibited. The use of oil-level
gauges with flat glasses and self-closing valves between the gauges and
fuel tanks is acceptable.
(e) The upper ends of sounding pipes terminating at the weather deck
shall be closed by a screw cap or plug. Great Lakes dry cargo carriers
may have the sounding pipes which service ballast water tanks terminate
at least 4 inches above the deck if closure is provided by a tight
fitting hinged cover making metal-to-metal contact with the hinge on the
forward side. Positive means to secure these caps in the closed position
shall be provided. Provision shall be made to prevent damage to the
vessels' plating by the striking of the sounding rod.
(f) On mobile offshore drilling units where installation of sounding
pipes may not be practicable for some tanks, alternate means of
determining liquid level may be used if approved by the Commandant.

[CGFR 68-82, 33 FR 18843, Dec. 18, 1968, as amended by CGD 73-251, 43 FR
56800, Dec. 4, 1978; CGD 83-043, 60 FR 24774, May 10, 1995; CGD 95-028,
62 FR 51201, Sept. 30, 1997]

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