< Previous | Contents | Next >
Section 5 Loading Instruments
501. Application
1. The requirements of this Section apply to tests and inspection for type approval of loading instru-
ments fitted on board for the calculation
Ch 1, 307. and 405. of the Rules, and
of stability in accordance with the requirements of Pt 1,
for the calculation of longitudinal strength in accordance
with the requirements of Pt 3, Ch 3, 104. of the Rules and for type approval of container lashing
calculation instrument in accordance with the requirements of Pt 7, Annex 7-2, 9. of the Guidance.
2. Related to Par 1 above, the design approval of the Society for the software (program) used in the loading instruments or container lashing calculation instruments refer to requirements specified in Ch 4, Sec 2. of this Guidance.
3. The requirements of this Section apply to the instruments used on land to assist several ships.
502. Data to be submitted
The environmental test procedures are in 102.
to be submitted to the Society in addition to those specified
503. Requirements
1. Construction
The loading instrument (computer) is under the following conditions, except
to have sufficient endurance and no difficulty for operating where fitted in a special place. Also, humidity is to be con-
sidered especially, and a self-monitoring function is recommended to be computerized to prevent fallacy or error caused by failure in the circuit, etc.
(1) Ambient temperature : 0°C to 45°C
(2) Vibration:
Amplitude ±1.0 mm at 2
Hz to 13.2 Hz
Acceleration ±0.7 at 13.2 Hz to 100 Hz
The vibration during operation is to range from 2 Hz to 100 Hz with an acceleration of ± 0.05
.
(3) Inclination:
Longitudinal inclination 10°
Transverse inclination 22.5°
(4) Power supply variation:
(A) A.C. power supply
Permanent value | Transient value | |
Voltage (rated) | ± 10 % | ± 20 %, 1.5 sec |
Frequency (rated) | ± 5 % | ± 10 %, 5 sec |
(B) D.C. power supply
+30 % to -25 % for rated voltage for equipment connected to the battery during charging
+20 % to -25 % for rated voltage for equipment not connected to the battery during charg- ing
2. The loading instrument is to have proper input/output function including printer. When the printer is provided separately, the type test for the printer is not required.
504. Test and inspection
1. Environmental test
Environmental tests of loading instruments are followed by test item 1 through 9 of Table 3.23.1 of
2304. However, the tests for loading instruments to be used on land are not required as a rule.
74 Guidance for Approval of Manufacturing Process and Type Approval, Etc. 2015