DIVING SAFETY MEMORANDUM 11/15
03 Jul 15
SUBJ: BRd 2806 (5) Changes
Ref: BRd 2806(5) Joint Services Sub-Aqua Diving Regulations, February 2015 Edition.
1. The following amends are to be made to BRd 2806 (5):
Para 0211 b. Amend to read:
Sufficient gas shall be provided for the duration of a transfer of two divers to a compression
chamber, hospital or other place.
Para 0213 b. Delete: b. Divers are to conduct more than 3 dives in any 24 hour period.
Insert:
b.
Number of permissible dives:
(1) Divers using BSAC 88 or Nitrox tables are not to conduct more than 3 dives in
any 24 hour period.
(2) Divers using dive computers may conduct 3 dives in a calendar day providing the
following requirements are met:
(a) Dive computers meet the British Safety Standard and are to either be
marked accordingly or have the associated manufacturer’s paperwork to prove it.
(b) Each diver is to have an individual dive computer; a diver may carry 2 dive
computers. In case of a discrepancy between the 2 dive computers, or their
buddy’s, divers are to follow the most conservative.
(c) Dive computers are allocated to the individual and are not to be swapped
between divers unless the dive computer has not been dived for a period of at
least 24 hours.
(d) At the start of a dive series the diver is to plan their first dive. The SADS is
responsible for checking and approving the plan.
(e) For each subsequent dive the diver is to plan the next dive. The SADS is
responsible for checking and approving each plan prior to the diver re-entering
the water.
(f) When multiple dives are being planned, the divers and SADS must ensure
that there is an appropriate surface interval between dives commensurate with
the depth and duration of each dive to ensure that decompression stops are
limited to a total of not more than 20 minutes within any 24 hour period.
(g) Up to 3 dives can be carried out in a calendar day; thereafter a minimum 10
hour interval is to be observed before starting the next dive series on the
following calendar day. Any residual nitrogen burden must be taken into
consideration when starting to plan the next dive serial following the 10 hour
break.
(h) If a dive computer fails for whatever reason the diver must cease diving for a
period of 24 hours before recommencing diving using either the BSAC tables or a
replacement dive computer. If a diver carries 2 dive computers continuously for
all dives since the last 24 hour break they may continue to dive using the
remaining serviceable one. If the second dive computer also fails then the diver
must cease diving for a period of 24 hours before recommencing diving using
either the BSAC tables or a replacement dive computer.
Para 0213 e. Amend to read:
e.
Any dive series involving consecutive days diving in excess of 30m is to be limited to
four days, after which a 24 hour no diving break is to be taken.
Para 0219 a. Delete: Gas Test Standards. The standards to be applied for gas testing are
contained in BS EN 12021:2014.
Insert:
a.
Gas Standards. All diving gas used under the JSAT scheme must comply with the
standards contained in BS EN 12021:2014 and JSP 319. This includes Compressed Natural
Breathing Air (CNBA), Nitrox and Trimix. For Nitrox and Trimix the constituent gases need to
be supplied for analysis not the final mix. In addition the medical oxygen, to be used in the
event of an emergency, must have a letter of conformity from the supplier.
Para 0219 f. After: These need to be valid for the entire duration of the expedition.
Insert:
Certificates for all gases listed at para 0219 a. are to be forwarded to the DST (AT) for
technical clearance.
2.
Insertion of these amends will be checked as part of the audit process. This DSM will be
available on the MOD Diving Safety website, under safety signal page. BRd 2806(5) will be
amended accordingly at the next update.
3.
SOFD POC: DSO (AT), Mr N Harrington: email dsa-dmr-dst-dsoat@mod.uk, Tel 01752
553691, Mil: 93755 3691 Mob: 07795012561. Out of Hours Duty DST: 07768 066867.
4.
Extant Safety Signals can be found on the MOD Diving Safety Website.