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Section 4 Marking

401. Marking

1. All valves, fittings, controls, indicators and warning devices are to be provided with identification plates made of a material which is at least flame retardant. The identifying marks are to be clear and unmistakable (e.g. stating the short designation and/or the function of the item concerned).

2. All pressure vessels and gas bottles are to be prominently and permanently marked with the follow- ing details:

(1) Name of manufacturer

(2) Serial number and year of manufacture

(3) Maximum permissible working pressure or diving depth (for compression chambers)

(4) Test pressure

(5) Capacity

(6) Maximum permissible number of divers (for compression chambers)

(7) Empty weight (of gas bottles)

(8) Date of test and test stamp.

3. Permanently installed gas bottles, gas containers and gas piping systems are, in addition, to be marked with a permanent colour code in accordance with Table 1.1.1 and with the chemical sym- bol designating the type of gas concerned. The marking of gas bottles are to be visible from the valve side.

Table 1.1.1 Marking of gas systems

Pt 1 Submersibles

Ch 1 General Pt 1, Ch 1

4. The handling, retrieval and mating appliances are to be fitted with a prominent and permanently mounted name plate containing at least the following information in easily legible characters:

(1) Name of manufacturer

(2) Serial number and year of manufacture

(3) Static test load

(4) Operational test load

(5) Maximum working load

(6) Date of test and test stamp.

Pt 1 Submersibles

Ch 2 Classification of Submersible Pt 1, Ch 2

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