How must the burst pressure requirement in AS245B paragraph 4.1.2 be revised for ETSO-2C19c?

The burst pressure must be greater than or equal to 'b' times the design pressure, where 'b' is given in Table 1. The design pressure is compatible with the maximum pressure encountered in use and ensures a long service life when charged.

What minimum tests must all extinguishers or extinguisher components be subjected to under the revised paragraph 5 of AS245B?

All extinguishers or extinguisher components shall be subjected at a minimum to the tests specified in the revised paragraph 5, which includes a proof pressure test.

What are the 'b' and 'p' factors for Type II extinguishers in Table 1 of ETSO-2C19c Appendix 1?

For Type II, b = 2.4 and p = 1.2.

Appendix 1 to ETSO-2C19c A1 - MPS Portable Water Solution Type Hand Fire Extinguishers

Q: What is the required proof pressure for a Type I water solution hand fire extinguisher under ETSO-2C19c?

The proof pressure must be greater than or equal to 'p' times the design pressure, and for Type I, p = 1.5.

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Appendix 1 to ETSO-2C19c A1 – MPS Portable Water Solution Type Hand Fire Extinguishers

ED Decision 2020/011/R

The applicable standard is SAE AS245B, Water Solution Type Hand Fire Extinguisher, dated (revised) April 2004, shall be modified as follows:

AS245B section

Action

Paragraph 4.1.2: Burst pressure

to be revised as follows:

The burst pressure must be greater than or equal to ‘b’ times the design pressure (see Table 1 below). The design pressure is compatible with the maximum pressure encountered in use of the extinguisher and ensures a long service life for equipment when charged.

Paragraph 5. Individual Performance

Requirements:

to be revised as follows:

All extinguishers, or extinguisher components shall be subjected at a minimum to the following tests:

Requirement to be added:

the proof pressure must be greater than or equal to ‘p’ times the design pressure (see table 1 below).

Table 1:

the ‘b’ and ‘p’ factors indicated depend on the type of extinguisher

	b	p
Type I	2,7	1,5
Type II	2,4	1,2

[Amdt ETSO/12]

[Amdt ETSO/16]

Details

Source-Title: Appendix 1 to ETSO-2C19c A1 - MPS Portable Water Solution Type Hand Fire Extinguishers View latest amendments

Erulesid: ERULES-1963177438-18192 Compare versions

Domain: Initial airworthiness

Amendedby: Amendment 16

Applicabilitydate: 25 July, 2020

Entryintoforcedate: 25 July, 2020

Regulatorysource: ED Decision 2020/011/R Navigate

Regulatorysubject: CS-ETSO

Typeofcontent: CS (Certification specification)

Parentir: ETSO-2C19c A1

Origin: EASA

Category: EAR