CB* 3218-1984 cargo and oil tank ladder

CB* 3218-1984 Cargo and oil tank ladder CB*3218-1984 Standard download decompression password: www.bzxz.net

National Ship Standardization Technical Committee Professional Standard CB*3218-84
Cargo and oil tank ladder
1984-10-15 Issued
1986-01-01 Implementation
National Ship Standardization Technical Committee Professional Standard Cargo and oil tank ladder
Ladder types are shown in Table 1.
Oil tank ladder
Angle steel cargo hold ladder
Ball flat steel cargo hold ladder
Ladder frame material specifications
L100×80×10www.bzxz.net
L80×50×8
Factory 140×35×9
National Ship Standardization Technical Committee 1984-10-15 Issued Ladder width B
300, 400
300, 400
CB*3 218—84
Group: 26
Replace CB281-77
CB635—67
Ladder length L
1200~6000
1200~6000
2100~6000
Implemented on 1986-01-01
CB*321884
The main dimensions and structural types of 2A type true ladder are as shown in Figure 1 and Table 2. Marking
（9）0
1—ladder frame; 2—steps, 3—eye plate; 4—handrail600
Number of steps
.CB* 3218--84
B= 300
Measurement,
B= 400
CB*3218—84
3The main dimensions and structural forms of Type B straight ladder are as shown in Figure 2 and Table 3. *9
B Viewing direction
1-ladder frame; 2-step; 3-eye plate; 4-bolt; 5-nut; 6-washer; Number of steps
CB* 3218—84
Weight, kg
B= 400
CB*3218-84
The main dimensions and structural forms of C-type straight ladder are according to Figure 3 and Table 4. Markings
1-ladder frame; 2-step; 3-eye plate;
B-viewing direction
4-bolt; 5-nut; 6-washer;
Number of steps
Marking example
CB*3218—84
Oil tank ladder with a length of 1500mm and a width of 400mm: oil tank ladder A1500×400
CB*3218-84
Ball flat steel cargo hold ladder with a length of 5400mm: cargo hold ladder C5400CB*3218-84
Technical requirements
Cargo oil tank ladders shall comply with the requirements of this standard. 6.1
Weight,
6.2Main parts of cargo oil tank ladder: steps, handrails, bolts, eye plates and A and B type ladder frames are made of ordinary carbon steel A3 (GB700-79), and C type ladder frames are made of 2C (GB712-80). 6.3
Cargo tank ladders must be galvanized after manufacture, and the coating thickness is not less than 25μm. They can also be rust-proofed and painted. After the oil tank ladder is manufactured, it should be protected with clear oil. The surface of the cargo oil tank ladder parts should be smooth and there should be no skew, distortion or other defects after assembly. When L>2500mm, an eye plate should be installed at an approximately equidistant position in the middle to fix it. Cargo oil tank ladders should be inspected and accepted by the technical inspection department of the manufacturer and a certificate of conformity should be issued. The following signs should be marked in a conspicuous place on each cargo oil tank ladder: a.
Product model or standard number;
Year and month of production;
Inspection pass seal.
CB*3218—84
Additional Notes:
This standard was proposed by the deck equipment group and is under the jurisdiction of Hudong Shipyard. This standard was drafted by Guangzhou Shipyard. The main drafter of this standard is Liu Wuying.
Oil tank ladder CB281—77 was first published in 1964. Cargo hold ladder CB635—67 was first published on November 28, 1967.
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