ISO IWA 28:2018 download

06-24-2021 comment

ISO IWA 28:2018 download.Faecal sludge treatment units Energy independent, prefabricated, community-scale resource-recovery units Safety and performance.
1 Scope
ISO IWA 28 specifies requirements and test methods to ensure safety, performance and sustainability of community-scale resource-oriented faecal sludge treatment units that serve approximately 1 000 to 100 000 people. ISO IWA 28 applies to treatment units that:
a) primarily treat faecal sludge;
b) are able to operate in non-sewered and off-grid environments:
c) are prefabricated.
ISO IWA 28 does not apply to sanitation treatment units requiring sewer infrastructure, or to those requiring electric grid access during steady state operation
Treatment units to which ISO IWA 28 applies exhibit resource recovery capability (e.g. recovering energy, reusable water, soil amendment) and are capable of being energy neutral or energy net positive.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of ISO IWA 28. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 72S0 (all parts), Basic human body measurements for leclmologlcal design
ISO/IEC 17065:2012, Conformity assessment — Requirements for bodies certifying products processes and services
ISO 20816-I, Mechanical vibration — Measurement and evaluation of machine vibration — Part 1: General guidelines
ISO 55000, Asset management — Overview, principles and terminology
IEC 60050, International clectrotechnical vocabulary
IEC 60204-I, Safety of machi ricry — Electrical equipment of machines — Part 1: General requirements
IEC 60942, Elect roacoustics — Sound calibrators
IEC 61260-I, Octave-band andfroctional-octave-bandflkers — Part 1: Spec qicotions
IEC 61672-1, Electroacoustlcs — Sound level meters — Part l:SpecEflcatlons
IEC 82079-1, Preparation of instructions for use — Structuring, content and presentation — Part 1: General principles and detailed requirements
API 650. Welded steel tanks for oil storage
ASTU 07341:1-13, Standard test methods far loss on ignition (WI) olsoJid combustion residues AWWA 0-100, Welded carbon steel tanks for water storage
4 General requirements
4.1 Industrial design and manufacture
Treatment units shall be designed and made in accordance with industrial standards. For the purposes of this document, industrial design and manufacture comprises the following requirements.
a) Design and manufacture olthe treatment unit shall be specified and realized in accordance with the International System of units (SI) set forth in ISO 80000, JEC 80000 or an equivalent international or national standard.
b) Design and manufacture shall be systematically planned, realized and tested along a defined product safety hfecycle that ensures testability, quality and regulatory conformity of the treatment unit.
c) Design and manufacture of the treatment unit shall be based on a clearly specified design base and uniform manufacturing process. The design base shall cover electrical, mechanical and process engineering, Including the base for the declared capacity, availability and performance of the treatment unit. International and/or national standards should be used to guide coinpilance with these design requirements.
d) Design and manufacture of the treatment unit shall be documented in a systematic techiiical file.
4.2 Hazard and operability study and risk assessment
The manufacturer of a treatment unit shalt carry out a hazard and operability study (HAZOP) following
EN 61882 or an equivalent standard, and either
a) a risk assessment following ISO 12100 orlEC 31010, or
b) an equivalent standard or an equally effective assessment capable of demonstrating proven safety of treatment units.
NOTE Operational Issues over which the operator (rather than the manufacturer) has control, such as material handling and loading, are outside the scope of this document and therefore excluded from this assessment.
The safety assessment shall:
a) determine the health and safety requirements that apply to the treatment unit:
b) determine risk.mitigating measures to be taken:
c) demonstrate the safety of the product by documenting the results of a safety assessment.
This assessment should be carried out during the design process however, the assessment may be carried out after the design process. The assessment shall cover the relevant life cycle of the treatment unit, considering its expected use and reasonably foreseeable misuse.
4.3 Ambient operation conditions
The treatment unit shall operate within the ambient temperature range, air humidity and pressures specified by the manufacturer (see iLl).
12.6.1 Consumable consumption
To facilitate comparison across systems as well as determination of suitability for a given location, treatment unit consumable consumption. For example, the use of chemicals and other additives during the operational phase shall be calculated and indicated in appropriate SI units (e.g. I or mg per volume or mass of treated input). The manufacturer shall specify the assumed factors for these calculations.
12.6.2 Greenhouse gas emissions (GHG)
The manufacturer shall indicate the amount of GHG emissions from treatment unit operation In appropriate units (e.g. kg per treated volume or mass of Input), These emission measurements shall include, but not limited to. CO2. N20 and CIL, BECCS (bioenergy with carbon capture and storage) concepts suitable for the treatment unit may be outlined.
12.6.3 Characteristics of resource recovered products
The manufacturer of the treatment unit shall specify the type, subtypes, concentration and amount of any valuable substances contained in each output product (in units such as mg/I or mg/kg dry mass and mg per volume of treated input). The manufacturer shall specify the assumptions used for these calculations. Further, any products for which no quality specifications are given in this document shall be evaluated through a detailed risk assessment (see 12) that the manufacturer shall provide with the product literature, demonstrating that no unacceptable environmental or health risks will be caused by foreseeable use of the output product.
NOTE I The suhtances of interest are those that will provide an economic value for the product.
NOTE 2 ThIs Information can be used to determine the potential economic value of the product for a given location.
12.7 MaIntenance and operator documentation
12,7.1 Language requIrements
All manuals provided with the treatment unit shall be composed at the reading level of the intended operators. Information shall be provided:
a) In the official local language(s) of the country of use;
b) in the English language.
12.7.2 ProvisIon of manual
The operator of the treatment unit shall be provided with the user manual prior to operation of the treatment unit. Manuals shall be in accordance with IEC 82079-1.
12,7.3 Number of documents
The required information may be provided in one manual or divided among several manuals.
Information to be provided
User manuals shall include, at a minimum:
a) product information, including:
1) model number
2) serial number:
3) date of manufacture.

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