Confidential.
GASHOLDERS.
리
1.
2.
3.
Every water-sealed gasholder used for the storage of
gas shall be of sound construction and maintained in good
repair and in good working order.
Every water-sealed gasholder shall be thoroughly examined
externally by a competent person not less frequently than
once in every two years. A report of the result of every
such examination containing the prescribed particulars shall,
within twenty-eight days from the date of the examination, be
entered in or attached to the General Register. Every such
report shall be signed by the person making the examination.
Every water-sealed gasholder of which any lift has been
in use more than twenty years shall be adequately examined by
a competent person as to the internal state of the sheeting, by
cutting samples from the gasholder crown and sides or by other
sufficient means. A report on the result of the examination
signed by the competent person shall be entered in or attached
to the General Register, and all such samples cut from gasholders
shall be kept available for examination.
The following further requirements shall apply to all
examinations of internal surfaces of gasholders.
(a)
(b)
Where no internal corrosion, wasting or substantial
defect is found, further adequate examinations of the
internal surfaces shall be made at intervals, not exceeding
10 years, and
Where any internal corrosion, wasting or substantial
defect is found, the report shall specify whether any, and
if so what, replacements or repairs are necessary and the
period within which they must be carried out. After the
completion of the replacements or repairs carried out under