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SOLAS Chapter II-1 Regulation 3-6
Oct.2004Summary Technical Details
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General

• References
• MSC.151(78) SOLAS II-1/3-6
• MSC.158(78) Technical Provisions
• Unified Interpretation UI SC191

Applicable to Tankers for Oil gt 500
gross tonnage (ESP) Bulk Carriers gt 20,000
gross tonnage With keel laying on or after
January 1, 2005
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Approval
Main Drawings - Initial evaluation access
not approved ( See standard approval comment at
the end ) Access Manual - All documentation
relevant to SOLAS II-1/3-6 to be included and
approved. - DNV plan to prepare an access manual
template for guidance (See standard approval
comment at the end ) (Note Until otherwise
noted MTPNO864 shall be consulted prior to
approval of the access manual)
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Safe Entry into Tanks (SOLAS II-1/3-6 Para. 3.1
UI)

• Cargo holds/tanks and
• Ballast tanks in cargo area (not fore peak tank)
  and
• Cofferdams and other spaces in the cargo area
• Access for entry shall be direct from deck

• Double bottom spaces or
• Forward ballast tank
• Access for entry may be from pump room/deep
  cofferdam/pipe tunnel/cargo hold/double hull
  spaces or similar not intended for carriage of
  oil.

• Other tanks and spaces outside of cargo area
• Not covered by requirements to safe entry

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Safe Entry into Tanks (SOLAS II-1/3-6 Para. 3.2
UI)
Tanks llt35m One Access hatchways
Tanks lgt35m or Tanks subdivided by swash
bulkhead or similar (double side tanks) Two
Access hatchways

• Bulk cargo holds
• Two Access hatchways

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Safe Entry into Tanks (T.P. 3.13 UI)
Inclined ladders Inclined ladders shall
generally be used for entry into tanks

• Vertical ladders may be used in lieu of inclined
  ladders for
• - Narrow ballast tanks blt2.5m
• As second access in bulk carrier cargo holds
• As second access to cargo tanks provided
  vertical distance to deep stringer/bottom hlt6m

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Access to (TP UI Ch. 3.5)
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Access to (TP UI Ch. 3.5 and Ch. 3.10)
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Standard Inclined Ladder (TP Ch. 3.6 UI)
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Standard Vertical Ladders (TP Ch. 3.4 and Ch. 3.6
UI)
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Access within (SOLAS II-1/3-6 Para. 5 UI)

• Access trough vertical and horizontal openings
• - Requirement apply to spaces in, and forward
  of, the cargo area
• Access to every bay formed by floor and girders
• Access within openings in double bottom

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Access within (SOLAS II-1/3-6 Para. 5 UI)
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Access within (SOLAS II-1/3-6 Para. 5 UI)
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Access for Inspection

• PMA (Permanent Means of Access) for inspection is
  required for
• - Ballast tanks in and forward of cargo area
• - Cargo tanks
• - Spaces having the shape of a ballast tank (e.g.
  double side space)
• (TP Table 1 and 2 UI)
• Alternative means
• To be used for access to areas and spaces in and
  forward of cargo area, not accessible from
  permanent means.
• General requirements
• - As far as practicable, PMA to be built-in as an
  integral part of the structural elements.
• (TP 1.4 and 3.2)

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Access for Inspection

• Access platforms
• Min clear width of 600mm
• Min width 450mm going around vertical structure
• Guard rail (solid bar) 1000m ab. platform
• Intermediate bar 500mm ab. platform
• Stanchions not more than 3.0m apart
• Sloping structure (gt 5 degrees) to be
  non-skid-type
• (TP Ch. 3.3)
• Resting platforms for access ladders follow the
  same standard

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PMA for Bulk Carriers (TP UI Table 2)
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PMA for Cargo Hold
TP Table 2, item 1.1 Access to be provided to
overhead structure at both sides of cross
deck and in vicinity of CL. PMA to be accessible
from cargo hold access or directly from main
deck. Alternative means may be used if underdeck
structure is within 17m above the tank top.
TP Table 2, item 1.6 PMA to be provided for at
least 25 of the vertical frames in the hold. As
a min, PMA should be arranged forward, middle,
and aft ends of the hold, at either
sides. Alternative means may be used for the
remaining frames.
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PMA for Bilge Hopper Tanks
TP Table 2, item 2.5 Access to the continuous
longitudinal PMA to be provided in the vicinity
of the tank access.
TP Table 2, item 2.5 For bilge hopper tanks with
height greater than 6m, PMA to be provided along
the side shell webs at a min. distance 1.2m below
the top of the clear opening of the web
ring. Access to tank bottom to be provided at
each end of the tank.
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PMA for Top Side Tanks
TP Table 2, item 2.3 PMA fitted at the end bays,
and at the middle bay of the tank, spanning from
the the tank base to the inboard top of tank. PMA
may utilize existing longitudinal structure
arranged inside the tank.
TP Table 2, item 2.1 For top side tanks with
height greater than 6m, continuous longitudinal
PMA to be provided along the side shell webs at a
distance between 1.6m and 3.0m below the
deck. Access to the continuous longitudinal PMA
to be provided in the vicinity of the tank access.
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PMA for Inspection Ore Carriers
TP Table 2, item 2.8 PMA shall be provided in
accordance with the applicable sections of table
1. For cargo holds ref. Table 1, item 1.1.2
(access platform at each side) and Table 2, item
1.1/1.2 (access to cross deck) Wing tanks
ref. Table 1, item 1.1 (as for oil cargo tanks)
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PMA in narrow Ballast tanks
TP Table 1, item 2.1.1 Where the upper side
stringer is situated more than 6m below the deck
head, additional continuous longitudinal PMA
should be arranged between min. 1.6m and max. 3m
below deck.
lt 6.0m

• TP Table 1, item 2.1.2
• Max. spacing between PMA 6m.
• PMA to be integrated in hull structure.
• Stringers as far as possible to be aligned
  with stringers on transverse bulkhead.

lt 6.0m
lt 6.0m
lt 6.0m
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PMA in narrow Hopper tank
TP Table 1, item 2.2 Where the vertical distance
between the tank bottom and the upper hopper
knuckle is above 6m, PMA should be arranged.
1.6 3m
TP Table 1, item 2.2.1 Longitudinal continuous
PMA arranged 1.6m to 3m below top of hopper
section with platform at web giving access to
upper hopper knuckle. OR Longitudinal continuous
PMA arranged min. 1.2m below top of hopper web
opening allowing for use of portable means of
access to reach critical areas.
1.2m
gt 6.0m
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PMA in large tanks
Cargo tanks and wide ballast tanks of height
greater than 6m
TP Table 1, Item 1.1.4 Integrated longitudinal
access at stiffened surface of the longitudinal
bulkhead aligned with stringers on the transverse
bulkhead. May be replaced by alternative means
of access provided permanent fittings (for wire
platform or similar) are arranged at upper
platform. (This is considered as a future option
when efficient alternative means are available.
Such alternative means should be available
onboard and readily accessible for survey without
filling of water in the cargo tank)
TP Table 1, Item 1.1.2 Longitudinal access at
each side of the tank at a min. distance of 1.6m
from the deck. At least one being within 6m from
deck. The other being within 3m from deck.
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PMA in large tanks
TP Para. 3.5 Access to PMA from open deck/
between PMA provided by ladders with resting
platforms spaced not more than 6.0m apart.
TP Table 1, item 1.1.1 Permanent access platform
at Deck/bulkhead connections arranged between
1.6m and 3.0m below deck at the stiffened side of
the bulkhead.
TP Table 1, item 1.1.3 Arrangements for access
between longitudinal PMA and PMA on transverse
bulkhead to be provided.
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PMA in large tanks
TP Table 1, item 1.1.5 Transverse access giving
access to tie flaring brackets on each side of
the tank should be arranged. For cross ties in
centre tank longitudinal access with transverse
extension to tie flaring bracket should be
satisfactory
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Tankers with External Deck Structure
Transverse bulkheads
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Access for Inspection (TP Table 1 Item 1.1.2)
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Standard Comments to Approval

• General comment Main Drawings
• Keel laying 1.Jan.2005 and 1.Jan.2006
• With reference to MSC Circular 1107 DNV will,
  unless otherwise instructed, approve for
  compliance with SOLAS II-1/3-6 applying early
  implementation of MSC.151(78) and MSC.158(78) in
  lieu of MSC.133(76.
• Keel laying after 1.Jan.2006
• No general comments necessary.
• Specific comments to the structural arrangement
  shown in the main drawings
• The drawing is considered with respect to
  permanent means of access as specified in
  MSC.158(78) and the following observations were
  made
• -..........
• -......
• Final evaluation of compliance with SOLAS
  II-1/3.6 will be carried out when Ship Structure
  Access Manual is received for approval.

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Standard Comments to Approval

• Approval comments to the Ship Structure Access
  Manual
• Keel laying 1.Jan.2005 and 1.Jan.2006
• The Ship Structure Access Manual is approved for
  compliance with SOLAS II-1/3-6 applying early
  implementation of MSC.151(78) and MSC.158(78) in
  lieu of MSC.133(76) and MSC.134(76).
• Keel laying after 1.Jan.2006
• No general comment on application of SOLAS
  II-1/3-6 is considered necessary.