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Efforts to Establish a JIS Standard for Sewer Pipe
Renovation Method

OGAWA Fumiaki, Head; SUEHISA Masaki , ResearcherWastewater System Division, Water Quality Control Department
Keywords: sewer pipe renovation method, JIS standard, life extending measures

2. Outline of JIS standard to be established
In establishing a JIS standard, it is necessary for thenational government to coordinate between providers(manufacturers and constructors) and users (sewerageservice provider) from a neutral position. Therefore, aJIS Standard Review Committee, in which theWastewater System Division of NILIM serves as theexecutive office, was established to discuss sewer piperenovation methods in fiscal 2011 and prepared a draft ofa national standard (JIS standard) for renovation methods
with consideration for ISO standards, seismicperformance, etc. at the end of 2012.
The draftprovides the required performance and requirements forensuring quality in the steps of manufacturing liner
material and constructing liner pipes for each of themethods for close-fit pipes, cured-in-place pipes,
spirally-wound pipes, and assembly pipes. The draft ischaracterized as an attempt to establish standards, before
the ISO, for required performance of assembled pipes,
design methods for the thickness of liner pipes, etc.,
which are not standardized by the ISO, based on theexisting standards of organizations 1) in Japan.

3. Future development
At present, the process to establish the new JIS
standard under the joint control of the MLIT and theMETI is ongoing, and discussions are being made fromthe viewpoint of whether the trade barriers stipulated by
WTO/TBT are applicable. In fiscal 2014, the plan is toestablish the draft as a standard. Establishment of thisnew JIS standard is expected to promote the efforts ofmanufacturers and constructors to ensure the quality ofpipe renovation methods, as well as overseas
development of domestic pipe manufacturers.
<Close-fit pipe><Spirally-wound pipe>

Liner pipe
Existingpipe 更生材
既設管(Resin, fiber, etc.)（樹脂､繊維等）Figure 1: Example of Sewer Pipe Renovation
Method600

extension (km)Construction
施工延長（km）

1. Introduction
This renovation method installs a new pipe inside an
existing pipe in order to secure the load bearing capacityand discharge capacity of deteriorated sewers (Fig. 1).
Since it enables renovation without replacing existing
pipes, this method is essential for extending the life ofpipes. The use of this method has been steadily
increasing in recent years (Fig. 2) and similar methods
have also been developed.
Since most other methods require that materials
delivered to the site as semi-finished products beprocessed at the site and liner pipes be assembled at thesite as finished products, construction should be managed
at the site in accordance with specifications prepared foreach project and in compliance with control proceduresand values. From this viewpoint, the ISO has alreadyestablished "ISO 11296s Plastics piping systems forrenovation of underground non-pressure drainage andsewerage networks.” However, this standard is based on
design concepts available in Europe and the USA, inwhich seismic performance and other construction
conditions differ from those in Japan, so it is necessary toestablish a national standard (JIS standard) based on theconstruction conditions in Japan.

500

400
300
200
1000S61
H7 H101986 H1
1989 H41992 1995
1998 H132001 H162004 H192007 H222010

Figure 2: Construction results of Renovation2)
Method by Year
[Reference]
1) Design and Construction Management Guideline inSewer Pipe Renovation Method (Draft), Japan
Sewage Works Association, Dec., 2011.
2) From material published by the Japan Pipe
Rehabilitation Quality Assurance Association.